![\""\u0110i\u1ec1u](\"https:\/\/cn-hawe.com\/wp-content\/uploads\/2026\/02\/What-standard-conditions-actually-means-and-why-your-shop-rarely-meets-them_w1200.jpg\")
<\/figure>\n\n\n\n\u201c\u0110i\u1ec1u ki\u1ec7n ti\u00eau chu\u1ea9n\u201d th\u01b0\u1eddng ngh\u0129a l\u00e0 th\u1ebf n\u00e0y: th\u00e9p m\u1ec1m 60.000 PSI, u\u1ed1n kh\u00f4ng ch\u1ea1m \u0111\u00e1y, b\u00e1n k\u00ednh trong x\u1ea5p x\u1ec9 b\u1eb1ng \u0111\u1ed9 d\u00e0y v\u1eadt li\u1ec7u, kh\u1ea9u \u0111\u1ed9 khu\u00f4n kho\u1ea3ng g\u1ea5p 8 l\u1ea7n \u0111\u1ed9 d\u00e0y, m\u1eb7t b\u00e0n \u0111\u01b0\u1ee3c \u0111i\u1ec1u ch\u1ec9nh cong chu\u1ea9n, t\u1ea3i ph\u00e2n b\u1ed1 \u0111\u1ec1u.<\/p>\n\n\n\n
\u0110\u00f3 l\u00e0 phi\u00ean b\u1ea3n ph\u00f2ng th\u00ed nghi\u1ec7m c\u1ee7a x\u01b0\u1edfng b\u1ea1n.<\/p>\n\n\n\n
Gi\u1edd b\u01b0\u1edbc ra gi\u00e1 ch\u1ee9a. M\u1ed9t b\u00f3 \u201cth\u00e9p m\u1ec1m\u201d ch\u1ea1y c\u1ee9ng h\u01a1n v\u00ec \u0111\u1ebfn t\u1eeb nh\u00e0 m\u00e1y kh\u00e1c. Ng\u01b0\u1eddi v\u1eadn h\u00e0nh tr\u01b0\u1edbc b\u1ea1n \u0111\u00e3 thay V\u2011die g\u1ea5p 10\u00d7 \u0111\u1ed9 d\u00e0y v\u00ec n\u00f3 \u0111\u00e3 c\u00f3 s\u1eb5n tr\u00ean m\u00e1y. B\u1ea1n \u0111ang ch\u1ea1y m\u00e1y u\u1ed1n th\u1ee7y l\u1ef1c ph\u00e2n b\u1ed1 l\u1ef1c kh\u00e1c v\u1edbi m\u00e1y c\u01a1. C\u00f3 th\u1ec3 m\u1eb7t b\u00e0n c\u1ee7a b\u1ea1n ch\u01b0a \u0111\u01b0\u1ee3c \u0111i\u1ec1u ch\u1ec9nh cong ho\u00e0n h\u1ea3o.<\/p>\n\n\n\n
M\u1ed7i y\u1ebfu t\u1ed1 \u0111\u00f3 \u0111\u1ec1u l\u00e0m thay \u0111\u1ed5i l\u1ef1c \u00e9p c\u1ea7n thi\u1ebft.<\/p>\n\n\n\n
Ri\u00eang l\u1ebb, ch\u00fang c\u00f3 v\u1ebb nh\u1ecf. Nh\u01b0ng c\u1ed9ng l\u1ea1i, ch\u00fang ch\u1ed3ng ch\u1ea5t. V\u00e0 b\u1ea3ng kh\u00f4ng bi\u1ebft v\u1ec1 b\u1ea5t k\u1ef3 y\u1ebfu t\u1ed1 n\u00e0o trong s\u1ed1 \u0111\u00f3.<\/p>\n\n\n\n
V\u00ec v\u1eady khi b\u1ea1n ch\u1ec9 v\u00e0o \u00f4 tr\u00ean t\u01b0\u1eddng v\u00e0 g\u1ecdi \u0111\u00f3 l\u00e0 s\u1ef1 th\u1eadt, th\u1ef1c ra b\u1ea1n \u0111ang gi\u1ea3 v\u1edd x\u01b0\u1edfng c\u1ee7a m\u00ecnh l\u00e0 m\u1ed9t s\u01a1 \u0111\u1ed3 trong s\u00e1ch gi\u00e1o khoa.<\/p>\n\n\n\n
C\u00e1i b\u1eaby t\u00e0i ch\u00ednh v\u00e0 v\u1eadt l\u00fd khi coi c\u00e1c \u01b0\u1edbc l\u01b0\u1ee3ng l\u00e0 th\u00f4ng s\u1ed1 ch\u00ednh x\u00e1c<\/h3>\n\n\n\n
\u0110\u00e2y l\u00e0 ch\u1ed7 m\u00e0 nhi\u1ec1u ng\u01b0\u1eddi t\u1ef1 \u0111\u1ea9y m\u00ecnh v\u00e0o r\u1eafc r\u1ed1i.<\/p>\n\n\n\n
H\u1ecd coi s\u1ed1 tr\u00ean b\u1ea3ng nh\u01b0 m\u1ed9t th\u00f4ng s\u1ed1 \u2014 kh\u00f4ng ph\u1ea3i \u01b0\u1edbc l\u01b0\u1ee3ng. V\u00ec v\u1eady h\u1ecd th\u00eam \u201can to\u00e0n\u201d v\u00e0o \u0111\u00f3. H\u1ecd tra 3\/16 thay v\u00ec 11\u2011gauge ch\u1ec9 \u0111\u1ec3 ch\u1eafc ch\u1eafn. Ho\u1eb7c h\u1ecd l\u00e0m tr\u00f2n chi\u1ec1u r\u1ed9ng khu\u00f4n l\u00ean. Ho\u1eb7c h\u1ecd th\u00eam 10% \u201ccho b\u1ea3o hi\u1ec3m\u201d.\u201d<\/p>\n\n\n\n
Nghe c\u00f3 v\u1ebb th\u1eadn tr\u1ecdng.<\/p>\n\n\n\n
Nh\u01b0ng l\u1ef1c kh\u00f4ng quan t\u00e2m \u0111\u1ebfn \u00fd \u0111\u1ecbnh c\u1ee7a b\u1ea1n. N\u1ebfu b\u1ea3ng \u0111\u00e3 gi\u1ea3 \u0111\u1ecbnh v\u1eadt li\u1ec7u trung b\u00ecnh v\u00e0 thi\u1ebft l\u1eadp trung b\u00ecnh, v\u00e0 b\u1ea1n c\u1ed9ng th\u00eam v\u00e0o, b\u1ea1n \u0111ang \u0111\u1ea9y g\u1ea7n h\u01a1n t\u1edbi gi\u1edbi h\u1ea1n tr\u00ean c\u1ee7a m\u00e1y u\u1ed1n \u1edf m\u1ed7i chu k\u1ef3. Th\u1ee7y l\u1ef1c c\u1ea3m nh\u1eadn \u0111\u01b0\u1ee3c. Khung c\u1ea3m nh\u1eadn \u0111\u01b0\u1ee3c. D\u1ee5ng c\u1ee5 ch\u1eafc ch\u1eafn c\u1ea3m nh\u1eadn \u0111\u01b0\u1ee3c.<\/p>\n\n\n\n
Theo th\u1eddi gian, \u0111\u00f3 l\u00e0 c\u00e1ch b\u1ea1n b\u1ecb cong tr\u1ee5c, m\u00f2n thanh d\u1eabn, n\u1ee9t vai ch\u00e0y. Kh\u00f4ng ph\u1ea3i trong m\u1ed9t v\u1ee5 n\u1ed5 k\u1ecbch t\u00ednh. M\u00e0 l\u00e0 do m\u1ecfi. Do l\u1ec7ch. Do s\u1ef1 tr\u01b0\u1eddn ch\u1eadm ch\u1ea1p h\u01b0\u1edbng t\u1edbi m\u1ed9t l\u1ea7n \u0111\u1ea1i tu $10,000 m\u00e0 b\u1ea1n th\u1ec1 l\u00e0 \u201cxu\u1ea5t hi\u1ec7n t\u1eeb h\u01b0 kh\u00f4ng.\u201d<\/p>\n\n\n\n
Kh\u00f4ng ph\u1ea3i v\u1eady.<\/p>\n\n\n\n
B\u1ea1n \u0111\u00e3 coi m\u1ed9t gi\u00e1 tr\u1ecb \u01b0\u1edbc l\u01b0\u1ee3ng nh\u01b0 th\u1ec3 n\u00f3 \u0111\u01b0\u1ee3c kh\u1eafc tr\u00ean \u0111\u00e1.<\/p>\n\n\n\n
C\u00e1ch m\u00e0 \u201cg\u1ea7n \u0111\u00fang\u201d bi\u1ebfn th\u00e0nh m\u00e1y qu\u00e1 t\u1ea3i, d\u1ee5ng c\u1ee5 g\u00e3y, ho\u1eb7c u\u1ed1n h\u1ecfng<\/h3>\n\n\n\n![\"C\u00e1ch](\"https:\/\/cn-hawe.com\/wp-content\/uploads\/2026\/02\/How-close-enough-turns-into-overloaded-machines-snapped-tooling-or-failed-bends_w1200.jpg\")
<\/figure>\n\n\n\nH\u00e3y l\u00e0m to\u00e1n nhanh tr\u00ean gi\u1ea5y. Ba b\u01b0\u1edbc.<\/p>\n\n\n\n
\n- Bi\u1ec3u \u0111\u1ed3 n\u00f3i c\u1ea7n 50 t\u1ea5n cho thi\u1ebft l\u1eadp c\u1ee7a b\u1ea1n.<\/li>\n\n\n\n
- V\u1eadt li\u1ec7u c\u1ee7a b\u1ea1n m\u1ea1nh h\u01a1n \u201cti\u00eau chu\u1ea9n\u201d 10%.\u201d<\/li>\n\n\n\n
- B\u1ea1n u\u1ed1n ch\u1ea1m \u0111\u00e1y thay v\u00ec u\u1ed1n kh\u00f4ng kh\u00ed \u2014 \u0111i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 t\u0103ng g\u1ea5p \u0111\u00f4i ho\u1eb7c g\u1ea5p ba nhu c\u1ea7u l\u1ef1c.<\/li>\n<\/ol>\n\n\n\n
B\u1ea1n kh\u00f4ng c\u00f2n \u1edf m\u1ee9c 50 t\u1ea5n n\u1eefa. B\u1ea1n c\u00f3 th\u1ec3 \u0111ang ch\u1ea1m ng\u01b0\u1ee1ng 90 ho\u1eb7c 120 m\u00e0 kh\u00f4ng nh\u1eadn ra.<\/p>\n\n\n\n
\u0110\u00f3 l\u00e0 c\u00e1ch \u0111\u1ea7u ch\u00e0y b\u1ecb m\u1ebb. \u0110\u00f3 l\u00e0 c\u00e1ch vai khu\u00f4n b\u1ecb n\u1ee9t v\u1edbi \u00e2m thanh b\u1ea1n c\u1ea3m th\u1ea5y t\u1eadn trong r\u0103ng. \u0110\u00f3 l\u00e0 c\u00e1ch m\u1ed9t m\u00e1y \u00e9p 100 t\u1ea5n s\u1ed1ng c\u1ea3 \u0111\u1eddi gi\u1ea3 v\u1edd l\u00e0 m\u00e1y 140 t\u1ea5n cho \u0111\u1ebfn khi c\u00f3 th\u1ee9 g\u00ec \u0111\u00f3 g\u00e3y.<\/p>\n\n\n\n
Ho\u1eb7c l\u1eadt ng\u01b0\u1ee3c t\u00ecnh hu\u1ed1ng. C\u00f4ng vi\u1ec7c \u0111\u1ed9 ch\u00ednh x\u00e1c cao \u0111\u00f4i khi c\u1ea7n nhi\u1ec1u l\u1ef1c h\u01a1n bi\u1ec3u \u0111\u1ed3 g\u1ee3i \u00fd \u0111\u1ec3 gi\u1eef g\u00f3c v\u00e0 ki\u1ec3m so\u00e1t \u0111\u1ed9 \u0111\u00e0n h\u1ed3i. V\u1eadn h\u00e0nh \u201ctheo s\u00e1ch\u201d v\u00e0 b\u1ea1n s\u1ebd c\u00f3 c\u00e1c chi ti\u1ebft kh\u00f4ng \u0111\u1ed3ng nh\u1ea5t, th\u1ee3 v\u1eadn h\u00e0nh li\u00ean t\u1ee5c ch\u1ec9nh, \u0111u\u1ed5i theo nh\u1eefng \u201cb\u00f3ng ma\u201d v\u1ed1n kh\u00f4ng ph\u1ea3i b\u00f3ng ma.<\/p>\n\n\n\n
\u201cG\u1ea7n \u0111\u00fang\u201d ch\u1ec9 hi\u1ec7u qu\u1ea3 khi chi ph\u00ed c\u1ee7a vi\u1ec7c sai l\u00e0 nh\u1ecf.<\/p>\n\n\n\n
Khi tr\u1ee5c \u00e9p \u0111ang h\u1ea1 xu\u1ed1ng v\u00e0 th\u00e9p s\u1eafp b\u1ecb bi\u1ebfn d\u1ea1ng, b\u1ea1n \u0111\u00e3 v\u01b0\u1ee3t qua \u0111i\u1ec3m tranh lu\u1eadn. V\u1eady c\u00e2u h\u1ecfi th\u1ef1c s\u1ef1 kh\u00f4ng ph\u1ea3i l\u00e0 li\u1ec7u bi\u1ec3u \u0111\u1ed3 c\u00f3 h\u1eefu \u00edch hay kh\u00f4ng.<\/p>\n\n\n\n
M\u00e0 l\u00e0: bi\u1ebfn s\u1ed1 n\u00e0o c\u1ee7a b\u1ea1n \u0111ang \u0111\u00e1nh l\u1eeba n\u00f3 ngay l\u00fac n\u00e0y?<\/p>\n\n\n\n
C\u00e1c bi\u1ebfn s\u1ed1 l\u00e0m v\u00f4 hi\u1ec7u tra c\u1ee9u bi\u1ec3u \u0111\u1ed3 c\u1ee7a b\u1ea1n<\/h2>\n\n\n\n
B\u1ea1n \u0111ang \u0111\u1ee9ng \u0111\u00f3 v\u1edbi bi\u1ec3u \u0111\u1ed3 trong tay ngh\u0129, \u201c\u0110\u01b0\u1ee3c th\u00f4i. N\u1ebfu n\u00f3 ch\u1ec9 l\u00e0 m\u1ed9t ph\u1ecfng \u0111o\u00e1n l\u1ecbch s\u1ef1, th\u00ec tr\u01b0\u1edbc khi tr\u1ee5c \u00e9p h\u1ea1 xu\u1ed1ng t\u00f4i th\u1ef1c s\u1ef1 ph\u1ea3i d\u00f9ng c\u00e1i g\u00ec?\u201d<\/p>\n\n\n\n
T\u1ed1t. \u0110\u00f3 l\u00e0 c\u00e2u h\u1ecfi \u0111\u00fang.<\/p>\n\n\n\n
B\u1edfi v\u00ec m\u1ed9t khi b\u1ea1n ch\u1ea5p nh\u1eadn r\u1eb1ng bi\u1ec3u \u0111\u1ed3 kh\u00f4ng ph\u1ea3i l\u00e0 kinh th\u00e1nh, b\u1ea1n kh\u00f4ng th\u1ec3 nh\u00fan vai b\u1ecf qua. B\u1ea1n ph\u1ea3i x\u00e1c \u0111\u1ecbnh c\u00e1c bi\u1ebfn s\u1ed1 th\u1ef1c s\u1ef1 l\u00e0m thay \u0111\u1ed5i l\u1ef1c. Thay \u0111\u1ed5i v\u1eadt li\u1ec7u, kh\u1ea9u \u0111\u1ed9 khu\u00f4n, ho\u1eb7c chi\u1ec1u d\u00e0i u\u1ed1n, v\u00e0 b\u1ea1n kh\u00f4ng ch\u1ec9 ch\u1ec9nh m\u1ed9t con s\u1ed1 \u2014 b\u1ea1n \u0111\u00e3 thay \u0111\u1ed5i v\u1eadt l\u00fd c\u1ee7a c\u00e1ch th\u00e9p bi\u1ebfn d\u1ea1ng gi\u1eefa ch\u00e0y v\u00e0 khu\u00f4n. N\u1ebfu b\u1ea1n kh\u00f4ng t\u00ednh \u0111\u1ebfn \u0111i\u1ec1u \u0111\u00f3 tr\u01b0\u1edbc kho\u1ea3nh kh\u1eafc kh\u00f4ng th\u1ec3 quay l\u1ea1i, m\u00e1y s\u1ebd t\u00ednh \u0111\u1ebfn n\u00f3 sau.<\/p>\n\n\n\n
H\u00e3y ph\u00e2n t\u00edch ba y\u1ebfu t\u1ed1 ph\u00e1 h\u1ecfng nhi\u1ec1u d\u1ee5ng c\u1ee5 h\u01a1n l\u00e0 \u201cxui x\u1ebbo\u201d t\u1eebng l\u00e0m.<\/p>\n\n\n\n
\u0110\u1ed9 b\u1ec1n k\u00e9o c\u1ee7a v\u1eadt li\u1ec7u: T\u1ea1i sao th\u00e9p m\u1ec1m l\u00e0 m\u1ed9t ti\u00eau chu\u1ea9n sai l\u1ec7ch cho th\u00e9p kh\u00f4ng g\u1ec9 ho\u1eb7c nh\u00f4m<\/h3>\n\n\n\n
T\u00f4i \u0111\u00e3 th\u1ea5y m\u1ed9t x\u01b0\u1edfng chuy\u1ec3n t\u1eeb th\u00e9p m\u1ec1m A36 sang th\u00e9p kh\u00f4ng g\u1ec9 304 tr\u00ean c\u00f9ng lo\u1ea1i gi\u00e1 \u0111\u1ee1 d\u00e0y 1\/8 inch. C\u00f9ng \u0111\u1ed9 d\u00e0y. C\u00f9ng V-die. C\u00f9ng chi\u1ec1u d\u00e0i u\u1ed1n. Ng\u01b0\u1eddi v\u1eadn h\u00e0nh \u0111\u1ec3 nguy\u00ean m\u1ee9c t\u1ea3i v\u00ec \u201cn\u00f3 ch\u1ec9 l\u00e0 th\u00e9p kh\u00f4ng g\u1ec9.\u201d<\/p>\n\n\n\n![\"\u0110\u1ed9](\"https:\/\/cn-hawe.com\/wp-content\/uploads\/2026\/02\/Material-Tensile-Strength-Why-mild-steel-is-a-flawed-baseline-for-stainless-or-aluminum_w1200.jpg\")
<\/figure>\n\n\n\nC\u00fa u\u1ed1n \u0111\u1ea7u ti\u00ean, g\u00f3c m\u1edf ra nh\u01b0 m\u1ed9t b\u1ea3n l\u1ec1 r\u1ebb ti\u1ec1n.<\/p>\n\n\n\n
T\u1ea1i sao? B\u1edfi v\u00ec h\u1ea7u h\u1ebft c\u00e1c b\u1ea3ng tra t\u01b0\u1eddng \u0111\u1ec1u \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng d\u1ef1a tr\u00ean th\u00e9p m\u1ec1m v\u1edbi s\u1ee9c b\u1ec1n k\u00e9o kho\u1ea3ng 60.000 PSI. \u0110\u00f3 l\u00e0 gi\u1ea3 \u0111\u1ecbnh ng\u1ea7m \u0111\u01b0\u1ee3c \u0111\u01b0a v\u00e0o b\u1ea3ng. Th\u00e9p kh\u00f4ng g\u1ec9 304 th\u01b0\u1eddng n\u1eb1m g\u1ea7n 75.000\u201385.000 PSI. \u0110\u00e2y kh\u00f4ng ph\u1ea3i l\u00e0 sai s\u1ed1 l\u00e0m tr\u00f2n. \u0110\u00e2y l\u00e0 m\u1ee9c t\u0103ng 25\u201340% s\u1ee9c c\u1ea3n \u0111\u1ed1i v\u1edbi s\u1ef1 ch\u1ea3y d\u1ebbo.<\/p>\n\n\n\n
\u0110\u00e2y l\u00e0 ph\u00e9p t\u00ednh nhanh tr\u00ean gi\u1ea5y:<\/p>\n\n\n\n
\n- T\u1ea3i tr\u1ecdng y\u00eau c\u1ea7u t\u1ef7 l\u1ec7 x\u1ea5p x\u1ec9 v\u1edbi s\u1ee9c b\u1ec1n k\u00e9o.<\/li>\n\n\n\n
- N\u1ebfu s\u1ee9c b\u1ec1n k\u00e9o t\u0103ng 30%, nhu c\u1ea7u l\u1ef1c s\u1ebd t\u0103ng kho\u1ea3ng 30%.<\/li>\n\n\n\n
- C\u00fa u\u1ed1n 40 t\u1ea5n c\u1ee7a b\u1ea1n gi\u1edd \u0111\u00e3 tr\u1edf th\u00e0nh c\u00fa u\u1ed1n 52 t\u1ea5n.<\/li>\n<\/ol>\n\n\n\n
V\u00e0 \u0111\u00f3 l\u00e0 tr\u01b0\u1edbc khi ch\u00fang ta n\u00f3i v\u1ec1 \u0111\u1ed9 \u0111\u00e0n h\u1ed3i tr\u1edf l\u1ea1i.<\/p>\n\n\n\n
Th\u00e9p kh\u00f4ng g\u1ec9 \u0111\u00e0n h\u1ed3i tr\u1edf l\u1ea1i m\u1ea1nh h\u01a1n th\u00e9p m\u1ec1m. Nh\u00f4m, t\u00f9y thu\u1ed9c v\u00e0o h\u1ee3p kim v\u00e0 tr\u1ea1ng th\u00e1i nhi\u1ec7t luy\u1ec7n, c\u00f3 th\u1ec3 \u0111i theo h\u01b0\u1edbng ng\u01b0\u1ee3c l\u1ea1i \u2014 s\u1ee9c b\u1ec1n k\u00e9o th\u1ea5p h\u01a1n, nh\u01b0ng \u0111\u1ed9 \u0111\u00e0n h\u1ed3i tr\u1edf l\u1ea1i l\u1edbn \u1edf m\u1ed9t s\u1ed1 tr\u1ea1ng th\u00e1i nhi\u1ec7t luy\u1ec7n. C\u00f4ng vi\u1ec7c y\u00eau c\u1ea7u \u0111\u1ed9 ch\u00ednh x\u00e1c cao \u0111\u00f4i khi c\u1ea7n nhi\u1ec1u l\u1ef1c h\u01a1n so v\u1edbi b\u1ea3ng tra \u0111\u1ec3 gi\u1eef g\u00f3c v\u00e0 ki\u1ec3m so\u00e1t \u0111\u1ed9 \u0111\u00e0n h\u1ed3i tr\u1edf l\u1ea1i. V\u00ec v\u1eady, b\u1ea1n r\u01a1i v\u00e0o c\u00e1i b\u1eaby: l\u1ef1c th\u1ea5p th\u00ec g\u00f3c m\u1edf v\u00e0 ph\u1ea3i \u0111i\u1ec1u ch\u1ec9nh li\u00ean t\u1ee5c; l\u1ef1c qu\u00e1 cao th\u00ec nguy c\u01a1 g\u00e3y khu\u00f4n v\u00e0 \u0111\u1ea7u ch\u00e0y b\u1ecb bi\u1ebfn d\u1ea1ng v\u1eeba \u0111\u1ee7 \u0111\u1ec3 l\u00e0m h\u1ecfng kh\u1ea3 n\u0103ng l\u1eb7p l\u1ea1i.<\/p>\n\n\n\n
R\u1ed3i c\u00f2n h\u01b0\u1edbng h\u1ea1t.<\/p>\n\n\n\n
U\u1ed1n m\u1ed9t chi ti\u1ebft theo h\u01b0\u1edbng ngang h\u1ea1t c\u00f3 th\u1ec3 c\u1ea7n nhi\u1ec1u h\u01a1n 5\u201315% l\u1ef1c so v\u1edbi u\u1ed1n theo h\u01b0\u1edbng d\u1ecdc h\u1ea1t. C\u00f9ng t\u1ea5m. C\u00f9ng \u0111\u1ed9 d\u00e0y. Kh\u00e1c h\u01b0\u1edbng. B\u1ea3ng tra gi\u1ea3 \u0111\u1ecbnh v\u1eadt li\u1ec7u \u0111\u1eb3ng h\u01b0\u1edbng \u2014 s\u1ee9c b\u1ec1n b\u1eb1ng nhau \u1edf m\u1ecdi h\u01b0\u1edbng. T\u1ea5m th\u1ef1c t\u1ebf th\u00ec kh\u00f4ng quan t\u00e2m b\u1ea3ng tra gi\u1ea3 \u0111\u1ecbnh g\u00ec.<\/p>\n\n\n\n
V\u1eady n\u1ebfu v\u1eadt li\u1ec7u c\u01a1 s\u1edf trong b\u1ea3ng tra l\u00e0 th\u00e9p m\u1ec1m v\u1edbi s\u1ee9c b\u1ec1n k\u00e9o c\u1ee5 th\u1ec3, v\u00e0 t\u1ea5m th\u1ef1c t\u1ebf c\u1ee7a b\u1ea1n l\u00e0 th\u00e9p kh\u00f4ng g\u1ec9 u\u1ed1n ngang h\u1ea1t t\u1eeb m\u1ed9t l\u00f4 nhi\u1ec7t luy\u1ec7n c\u1ee9ng h\u01a1n, th\u00ec b\u1ea1n \u0111ang \u201ctra c\u1ee9u\u201d c\u00e1i g\u00ec n\u1eefa?<\/p>\n\n\n\n
Kh\u1ea9u m\u1edf V-Die: H\u1ec7 s\u1ed1 \u1ea9n quy\u1ebft \u0111\u1ecbnh l\u1ef1c u\u1ed1n c\u1ea7n thi\u1ebft c\u1ee7a b\u1ea1n<\/h3>\n\n\n\n
Gi\u1edd h\u00e3y n\u00f3i v\u1ec1 khu\u00f4n m\u00e0 b\u1ea1n ch\u1ecdn ch\u1ec9 v\u00ec n\u00f3 \u0111\u00e3 c\u00f3 s\u1eb5n trong m\u00e1y.<\/p>\n\n\n\n
H\u1ea7u h\u1ebft c\u00e1c c\u00f4ng th\u1ee9c t\u00ednh t\u1ea3i tr\u1ecdng u\u1ed1n ki\u1ec3u air-bend \u0111\u1ec1u r\u00fat g\u1ecdn th\u00e0nh m\u1ed1i quan h\u1ec7 n\u00e0y: L\u1ef1c t\u1ef7 l\u1ec7 v\u1edbi \u0111\u1ed9 d\u00e0y b\u00ecnh ph\u01b0\u01a1ng, nh\u00e2n v\u1edbi s\u1ee9c b\u1ec1n k\u00e9o, chia cho kh\u1ea9u m\u1edf V-die.<\/p>\n\n\n\n
Ph\u1ea7n cu\u1ed1i n\u00e0y r\u1ea5t quan tr\u1ecdng. L\u1ef1c t\u1ef7 l\u1ec7 ngh\u1ecbch v\u1edbi kh\u1ea9u m\u1edf V.<\/p>\n\n\n\n
B\u1ea1n gi\u1ea3m m\u1ed9t n\u1eeda kh\u1ea9u m\u1edf V, b\u1ea1n s\u1ebd t\u0103ng g\u1ea5p \u0111\u00f4i t\u1ea3i tr\u1ecdng.<\/p>\n\n\n\n
V\u00ed d\u1ee5 c\u1ee5 th\u1ec3. Gi\u1ea3 s\u1eed th\u00e9p m\u1ec1m d\u00e0y 1\/4 inch, u\u1ed1n ki\u1ec3u air-bend trong kh\u1ea9u m\u1edf V l\u00e0 2 inch (kho\u1ea3ng 8\u00d7 \u0111\u1ed9 d\u00e0y). B\u1ea3ng tra n\u00f3i, gi\u1ea3 \u0111\u1ecbnh, 60 t\u1ea5n tr\u00ean chi\u1ec1u d\u00e0i u\u1ed1n c\u1ee7a b\u1ea1n. Gi\u1edd b\u1ea1n quy\u1ebft \u0111\u1ecbnh mu\u1ed1n b\u00e1n k\u00ednh trong ch\u1eb7t h\u01a1n v\u00e0 gi\u1ea3m xu\u1ed1ng kh\u1ea9u m\u1edf V 1 inch.<\/p>\n\n\n\n
C\u00f9ng v\u1eadt li\u1ec7u. C\u00f9ng \u0111\u1ed9 d\u00e0y. C\u00f9ng chi\u1ec1u d\u00e0i.<\/p>\n\n\n\n
M\u1eabu s\u1ed1 c\u1ee7a b\u1ea1n v\u1eeba b\u1ecb gi\u1ea3m m\u1ed9t n\u1eeda. T\u1ea3i tr\u1ecdng y\u00eau c\u1ea7u kh\u00f4ng \u0111i\u1ec1u ch\u1ec9nh nh\u1eb9 v\u00e0i ph\u1ea7n tr\u0103m. N\u00f3 nh\u1ea3y l\u00ean g\u1ea7n 120 t\u1ea5n.<\/p>\n\n\n\n
Tr\u00ean m\u1ed9t m\u00e1y ch\u1ea5n 100 t\u1ea5n.<\/p>\n\n\n\n
V\u00e0 \u0111\u00e2y l\u00e0 ch\u1ed7 m\u00e0 nhi\u1ec1u ng\u01b0\u1eddi b\u1ecb \u201cnghi\u1ec1n n\u00e1t\u201d v\u1ec1 t\u00e0i ch\u00ednh. H\u1ecd n\u00f3i: \u201cS\u1ed1 tr\u00ean b\u1ea3ng n\u1eb1m d\u01b0\u1edbi m\u1ee9c \u0111\u1ecbnh m\u1ee9c c\u1ee7a m\u00e1y t\u00f4i, t\u00f4i an to\u00e0n.\u201d Nh\u01b0ng h\u1ecd \u0111ang ngh\u0129 \u0111\u1ebfn t\u1ed5ng l\u1ef1c t\u1ea5n, ch\u1ee9 kh\u00f4ng ph\u1ea3i t\u1ea3i tr\u1ecdng tr\u00ean m\u1ed7i inch. M\u1ed9t m\u00e1y ch\u1ea5n 10 foot, 100 t\u1ea5n kh\u00f4ng c\u00f3 ngh\u0129a l\u00e0 100 t\u1ea5n \u1edf b\u1ea5t k\u1ef3 ch\u1ed7 n\u00e0o b\u1ea1n mu\u1ed1n. Gi\u1edbi h\u1ea1n t\u1ea3i tr\u1ecdng \u1edf \u0111\u01b0\u1eddng t\u00e2m th\u01b0\u1eddng ch\u1ec9 kho\u1ea3ng 60% c\u00f4ng su\u1ea5t t\u1ed1i \u0111a. Tr\u00ean m\u1ed9t b\u00e0n d\u00e0i 120 inch, \u0111i\u1ec1u \u0111\u00f3 c\u00f3 th\u1ec3 t\u01b0\u01a1ng \u0111\u01b0\u01a1ng kho\u1ea3ng 1,4 t\u1ea5n m\u1ed7i inch \u1edf \u0111\u01b0\u1eddng t\u00e2m.<\/p>\n\n\n\n
T\u1eadp trung qu\u00e1 nhi\u1ec1u l\u1ef1c \u1edf gi\u1eefa v\u1edbi m\u1ed9t khu\u00f4n h\u1eb9p v\u00e0 chi ti\u1ebft ng\u1eafn, b\u1ea1n kh\u00f4ng ch\u1ec9 l\u00e0m c\u0103ng d\u1ee5ng c\u1ee5 \u2014 b\u1ea1n \u0111ang l\u00e0m cong khung m\u00e1y. \u0110\u00f3 l\u00e0 c\u00e1ch b\u1ea1n t\u1ea1o ra bi\u1ebfn d\u1ea1ng v\u0129nh vi\u1ec5n. \u0110\u00f3 l\u00e0 c\u00e1ch c\u00e2u \u201c\u0110i\u1ec1u anh ta ch\u01b0a bao gi\u1edd ki\u1ec3m tra l\u00e0 b\u00e0n m\u00e1y\u201d tr\u1edf th\u00e0nh l\u1eddi gi\u1ea3i th\u00edch sau c\u00f9ng cho nhi\u1ec1u n\u0103m g\u00f3c u\u1ed1n kh\u00f4ng \u0111\u1ed3ng \u0111\u1ec1u.<\/p>\n\n\n\n
V\u1eady khi b\u1ea1n thay khu\u00f4n 8\u00d7T b\u1eb1ng 6\u00d7T ho\u1eb7c 4\u00d7T v\u00ec n\u00f3 \u201ctr\u00f4ng \u0111\u1eb9p h\u01a1n\u201d, b\u1ea1n c\u00f3 t\u00ednh l\u1ea1i l\u1ef1c \u2014 hay ch\u1ec9 nh\u00e2n \u0111\u00f4i n\u00f3 v\u00e0 hy v\u1ecdng h\u1ec7 th\u1ed1ng th\u1ee7y l\u1ef1c tha th\u1ee9 cho b\u1ea1n?<\/p>\n\n\n\n
Chi\u1ec1u d\u00e0i u\u1ed1n so v\u1edbi l\u1ef1c t\u1ea5n: T\u1ea1i sao t\u00ednh to\u00e1n cho chi\u1ec1u d\u00e0i t\u00f9y ch\u1ec9nh kh\u00f4ng ch\u1ec9 l\u00e0 ph\u00e9p chia c\u01a1 b\u1ea3n<\/h3>\n\n\n\n
T\u00f4i \u0111\u00e3 nghe \u0111i\u1ec1u n\u00e0y qu\u00e1 nhi\u1ec1u l\u1ea7n: \u201cB\u1ea3ng n\u00f3i 80 t\u1ea5n cho 10 foot. T\u00f4i ch\u1ec9 u\u1ed1n 2 foot. V\u1eady l\u00e0 16 t\u1ea5n. D\u1ec5 th\u00f4i.\u201d<\/p>\n\n\n\n
Ch\u1eadm l\u1ea1i.<\/p>\n\n\n\n
\u0110\u00fang, l\u1ef1c t\u1ea5n trong u\u1ed1n kh\u00f4ng ch\u1ea1m t\u1ef7 l\u1ec7 g\u1ea7n \u0111\u00fang v\u1edbi chi\u1ec1u d\u00e0i u\u1ed1n. U\u1ed1n ng\u1eafn h\u01a1n, t\u1ed5ng l\u1ef1c \u00edt h\u01a1n. Ph\u1ea7n \u0111\u00f3 \u0111\u00fang. Nh\u01b0ng m\u00e1y kh\u00f4ng ch\u1ec9 quan t\u00e2m \u0111\u1ebfn t\u1ed5ng s\u1ed1 t\u1ea5n. N\u00f3 quan t\u00e2m \u0111\u1ebfn c\u00e1ch nh\u1eefng t\u1ea5n \u0111\u00f3 \u0111\u01b0\u1ee3c ph\u00e2n b\u1ed1 d\u1ecdc theo b\u00e0n m\u00e1y.<\/p>\n\n\n\n
Gi\u1ea3 s\u1eed m\u00e1y ch\u1ea5n c\u1ee7a b\u1ea1n \u0111\u01b0\u1ee3c \u0111\u1ecbnh m\u1ee9c 100 t\u1ea5n tr\u00ean 120 inch. \u0110i\u1ec1u \u0111\u00f3 kho\u1ea3ng 0,83 t\u1ea5n m\u1ed7i inch n\u1ebfu ph\u00e2n b\u1ed1 ho\u00e0n h\u1ea3o. Nh\u01b0ng m\u00e1y th\u1ef1c t\u1ebf th\u01b0\u1eddng gi\u1edbi h\u1ea1n t\u1ea3i tr\u1ecdng \u1edf \u0111\u01b0\u1eddng t\u00e2m kho\u1ea3ng 60% m\u1ee9c \u0111\u1ecbnh m\u1ee9c \u0111\u1ec3 b\u1ea3o v\u1ec7 khung. L\u00fac n\u00e0y b\u1ea1n g\u1ea7n h\u01a1n v\u1edbi 1,4 t\u1ea5n m\u1ed7i inch nh\u01b0 m\u1ed9t gi\u1edbi h\u1ea1n c\u1ee9ng \u1edf v\u00f9ng gi\u1eefa.<\/p>\n\n\n\n
N\u1ebfu t\u00ednh to\u00e1n c\u1ee7a b\u1ea1n cho th\u1ea5y chi ti\u1ebft d\u00e0i 24 inch c\u1ea7n 40 t\u1ea5n, th\u00ec \u0111\u00f3 l\u00e0 1,67 t\u1ea5n m\u1ed7i inch.<\/p>\n\n\n\n
Tr\u00ean gi\u1ea5y, 40 nh\u1ecf h\u01a1n 100. Tr\u00f4ng c\u00f3 v\u1ebb an to\u00e0n.<\/p>\n\n\n\n
Th\u1ef1c t\u1ebf, b\u1ea1n v\u1eeba v\u01b0\u1ee3t qu\u00e1 gi\u1edbi h\u1ea1n k\u1ebft c\u1ea5u tr\u00ean m\u1ed7i inch \u1edf trung t\u00e2m m\u00e1y. \u0110\u00f3 l\u00e0 c\u00e1ch khung m\u00e1y c\u00f3 m\u1ed9t \u201cn\u1ee5 c\u01b0\u1eddi\u201d v\u0129nh vi\u1ec5n \u1edf gi\u1eefa. Kh\u00f4ng ph\u1ea3i trong m\u1ed9t l\u1ea7n h\u1ecfng h\u00f3c k\u1ecbch t\u00ednh \u2014 m\u00e0 trong h\u00e0ng ngh\u00ecn l\u1ea7n u\u1ed1n ng\u1eafn \u201can to\u00e0n\u201d \u00e2m th\u1ea7m l\u00e0m qu\u00e1 t\u1ea3i c\u00f9ng 2 foot b\u00e0n m\u00e1y.<\/p>\n\n\n\n
V\u00e0 \u0111\u00e2y l\u00e0 ph\u1ea7n tinh t\u1ebf: u\u1ed1n ng\u1eafn gi\u1ea3m t\u1ed5ng l\u1ef1c t\u1ea5n, nh\u01b0ng t\u0103ng nguy c\u01a1 qu\u00e1 t\u1ea3i c\u1ee5c b\u1ed9. B\u1ea3ng gi\u1ea3 \u0111\u1ecbnh ph\u00e2n b\u1ed1 to\u00e0n chi\u1ec1u d\u00e0i tr\u1eeb khi c\u00f3 ghi ch\u00fa kh\u00e1c. Chi\u1ec1u d\u00e0i t\u00f9y ch\u1ec9nh c\u1ee7a b\u1ea1n thay \u0111\u1ed5i \u0111\u01b0\u1eddng truy\u1ec1n t\u1ea3i b\u00ean trong m\u00e1y.<\/p>\n\n\n\n
V\u1eady n\u00ean, kh\u00f4ng, n\u00f3 kh\u00f4ng ch\u1ec9 l\u00e0 ph\u00e9p chia.<\/p>\n\n\n\n
\u0110\u00f3 l\u00e0 t\u1ed5ng l\u1ef1c, chia cho chi\u1ec1u d\u00e0i u\u1ed1n th\u1ef1c t\u1ebf, ki\u1ec3m tra v\u1edbi gi\u1edbi h\u1ea1n tr\u00ean m\u1ed7i inch, \u0111i\u1ec1u ch\u1ec9nh theo \u0111\u1ed9 r\u1ed9ng khu\u00f4n v\u00e0 \u0111\u1ed9 b\u1ec1n k\u00e9o th\u1ef1c t\u1ebf. \u0110\u00f3 l\u00e0 s\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa \u201can to\u00e0n theo b\u1ea3ng\u201d v\u00e0 an to\u00e0n v\u1ec1 m\u1eb7t c\u01a1 kh\u00ed.<\/p>\n\n\n\n
Gi\u1edd h\u00e3y l\u00f9i l\u1ea1i v\u00e0 nh\u00ecn v\u00e0o nh\u1eefng g\u00ec ch\u00fang ta \u0111\u00e3 kh\u00e1m ph\u00e1.<\/p>\n\n\n\n
V\u1eadt li\u1ec7u thay \u0111\u1ed5i l\u1ef1c c\u1ea7n thi\u1ebft \u0111\u1ec3 \u0111\u1ea1t gi\u1edbi h\u1ea1n ch\u1ea3y. \u0110\u1ed9 m\u1edf khu\u00f4n thay \u0111\u1ed5i l\u1ee3i th\u1ebf c\u01a1 h\u1ecdc. Chi\u1ec1u d\u00e0i u\u1ed1n thay \u0111\u1ed5i c\u00e1ch l\u1ef1c \u0111\u01b0\u1ee3c ph\u00e2n b\u1ed1 v\u00e0o khung m\u00e1y. Kh\u00f4ng c\u00e1i n\u00e0o l\u00e0 ch\u1ec9nh s\u1eeda mang t\u00ednh th\u1ea9m m\u1ef9. M\u1ed7i y\u1ebfu t\u1ed1 \u0111\u1ec1u vi\u1ebft l\u1ea1i ph\u01b0\u01a1ng tr\u00ecnh l\u1ef1c.<\/p>\n\n\n\n
N\u1ebfu b\u1ea3ng kh\u00f4ng th\u1ea5y \u0111\u01b0\u1ee3c nh\u1eefng bi\u1ebfn s\u1ed1 \u0111\u00f3, v\u00e0 m\u00e1y c\u1ee7a b\u1ea1n ch\u1eafc ch\u1eafn c\u1ea3m nh\u1eadn ch\u00fang, th\u00ec m\u1ed9t ph\u00e9p t\u00ednh s\u1ebd tr\u00f4ng nh\u01b0 th\u1ebf n\u00e0o n\u1ebfu th\u1ef1c s\u1ef1 t\u00ednh \u0111\u1ebfn c\u1ea3 ba y\u1ebfu t\u1ed1 tr\u01b0\u1edbc khi ch\u00e0y \u00e9p \u0111i xu\u1ed1ng?<\/p>\n\n\n\n
C\u00f4ng th\u1ee9c l\u1ef1c t\u1ea5n ph\u1ed5 qu\u00e1t (v\u00e0 c\u00e1ch th\u1ef1c s\u1ef1 s\u1eed d\u1ee5ng n\u00f3)<\/h2>\n\n\n\n
B\u1ea1n c\u00f3 m\u1ed9t t\u1ea5m th\u00e9p d\u00e0y 1\/4 inch tr\u00ean b\u00e0n. U\u1ed1n d\u00e0i 10 foot. Kh\u00e1ch h\u00e0ng mu\u1ed1n giao ngay h\u00f4m nay. B\u1ea3ng tr\u00ean t\u01b0\u1eddng cho m\u1ed9t con s\u1ed1. C\u1ea3m gi\u00e1c c\u1ee7a b\u1ea1n n\u00f3i m\u1ed9t con s\u1ed1 kh\u00e1c. D\u00f9 th\u1ebf n\u00e0o th\u00ec ch\u00e0y \u00e9p v\u1eabn \u0111i xu\u1ed1ng.<\/p>\n\n\n\n
V\u1eady tr\u01b0\u1edbc kho\u1ea3nh kh\u1eafc \u201c\u0111i\u1ec3m kh\u00f4ng th\u1ec3 quay l\u1ea1i\u201d \u0111\u00f3, ph\u00e9p to\u00e1n th\u1ef1c s\u1ef1 tr\u00f4ng nh\u01b0 th\u1ebf n\u00e0o?<\/p>\n\n\n\n
N\u00f3 tr\u00f4ng nh\u01b0 th\u1ebf n\u00e0y: T\u1ea3i tr\u1ecdng = (575 \u00d7 T\u00b2 \u00d7 L) \/ V<\/strong><\/p>\n\n\n\n\u0110\u00f3 kh\u00f4ng ph\u1ea3i l\u00e0 bi\u1ec3u \u0111\u1ed3. \u0110\u00f3 l\u00e0 m\u1ed9t m\u00f4 h\u00ecnh. N\u00f3 bu\u1ed9c b\u1ea1n ph\u1ea3i nh\u1eadp \u0111\u1ed9 d\u00e0y, chi\u1ec1u d\u00e0i u\u1ed1n v\u00e0 kh\u1ea9u \u0111\u1ed9 khu\u00f4n thay v\u00ec gi\u1ea3 v\u1edd r\u1eb1ng ch\u00fang kh\u00f4ng thay \u0111\u1ed5i.<\/p>\n\n\n\n
V\u00e0 n\u1ebfu b\u1ea1n c\u00f3 th\u1ec3 nh\u00e2n ba s\u1ed1 v\u00e0 chia cho m\u1ed9t s\u1ed1, b\u1ea1n c\u00f3 th\u1ec3 t\u1ef1 t\u00ednh.<\/p>\n\n\n\n
Ph\u00e2n t\u00edch ph\u00e9p to\u00e1n: T\u1ea3i tr\u1ecdng = (575 \u00d7 T\u00b2 \u00d7 L) \/ V<\/h3>\n\n\n\n
H\u00e3y b\u1eaft \u0111\u1ea7u v\u1edbi m\u1ed9t v\u00ed d\u1ee5 th\u1ef1c t\u1ebf.<\/p>\n\n\n\n
Gi\u1ea3 s\u1eed b\u1ea1n u\u1ed1n kh\u00f4ng ch\u1ea1m 1\/4 inch th\u00e9p m\u1ec1m (0,25 in) tr\u00ean 120 inch b\u1eb1ng khu\u00f4n V 2 inch.<\/p>\n\n\n\n
B\u01b0\u1edbc 1 \u2014 B\u00ecnh ph\u01b0\u01a1ng \u0111\u1ed9 d\u00e0y. 0,25\u00b2 = 0,0625<\/p>\n\n\n\n
B\u01b0\u1edbc 2 \u2014 Nh\u00e2n v\u1edbi 575 v\u00e0 chi\u1ec1u d\u00e0i u\u1ed1n. 575 \u00d7 0,0625 \u00d7 120 575 \u00d7 7,5 = 4.312,5<\/p>\n\n\n\n
B\u01b0\u1edbc 3 \u2014 Chia cho kh\u1ea9u \u0111\u1ed9 khu\u00f4n V. 4.312,5 \/ 2 = 2.156 t\u1ea5n?<\/strong> Kh\u00f4ng. H\u00e3y ch\u00fa \u00fd \u0111\u01a1n v\u1ecb.<\/p>\n\n\n\nH\u1eb1ng s\u1ed1 575 \u0111\u00f3 \u0111\u00e3 t\u00ednh cho th\u00e9p m\u1ec1m khi u\u1ed1n kh\u00f4ng ch\u1ea1m v\u00e0 cho ra pound tr\u00ean m\u1ed7i inch u\u1ed1n<\/strong>, kh\u00f4ng ph\u1ea3i t\u1ed5ng s\u1ed1 t\u1ea5n. Nh\u00e2n \u0111\u00fang c\u00e1ch v\u00e0 b\u1ea1n s\u1ebd ra kho\u1ea3ng 197 t\u1ea5n t\u1ed5ng c\u1ed9ng<\/strong> cho \u0111o\u1ea1n u\u1ed1n 10 foot v\u1edbi khu\u00f4n 2 inch.<\/p>\n\n\n\nB\u00e2y gi\u1edd ch\u1ec9 thay \u0111\u1ed5i m\u1ed9t th\u1ee9: \u0111\u1ed5i sang khu\u00f4n V 3 inch.<\/p>\n\n\n\n
M\u1ecdi th\u1ee9 kh\u00e1c gi\u1eef nguy\u00ean.<\/p>\n\n\n\n
B\u1ea1n chia cho 3 thay v\u00ec 2. T\u1ea3i tr\u1ecdng y\u00eau c\u1ea7u gi\u1ea3m xu\u1ed1ng kho\u1ea3ng 139 t\u1ea5n<\/strong>.<\/p>\n\n\n\nC\u00f9ng v\u1eadt li\u1ec7u. C\u00f9ng \u0111\u1ed9 d\u00e0y. C\u00f9ng chi\u1ec1u d\u00e0i.<\/p>\n\n\n\n
Bi\u1ebfn \u0111\u1ed9ng ba m\u01b0\u01a1i ph\u1ea7n tr\u0103m ch\u1ec9 v\u00ec m\u1ed9t d\u1ee5ng c\u1ee5 n\u1eb1m trong gi\u00e1 c\u1ee7a b\u1ea1n.<\/p>\n\n\n\n
\u0110\u00f3 l\u00e0 l\u00fd do t\u1ea1i sao c\u00e1c b\u1ea3ng bi\u1ec3u ch\u1ec9 l\u00e0 nh\u1eefng d\u1ef1 \u0111o\u00e1n l\u1ecbch s\u1ef1. Ch\u00fang gi\u1ea3 \u0111\u1ecbnh m\u1ed9t V \u201cti\u00eau chu\u1ea9n\u201d, th\u01b0\u1eddng l\u00e0 8\u00d7 \u0111\u1ed9 d\u00e0y. C\u00f4ng th\u1ee9c th\u00ec kh\u00f4ng gi\u1ea3 \u0111\u1ecbnh. N\u00f3 bu\u1ed9c b\u1ea1n ph\u1ea3i n\u00f3i ra m\u1eabu s\u1ed1 m\u1ed9t c\u00e1ch r\u00f5 r\u00e0ng. V\u00e0 m\u1ed9t khi b\u1ea1n th\u1ea5y t\u1ea3i tr\u1ecdng ph\u1ea3n \u1ee9ng m\u1ea1nh m\u1ebd th\u1ebf n\u00e0o v\u1edbi \u0111\u1ed9 m\u1edf V, b\u1ea1n s\u1ebd ng\u1eebng ch\u1ecdn khu\u00f4n ch\u1ec9 v\u00ec ch\u00fang ti\u1ec7n l\u1ee3i.<\/p>\n\n\n\n
Nh\u01b0ng \u0111\u00e2y l\u00e0 ph\u1ea7n m\u00e0 nhi\u1ec1u ng\u01b0\u1eddi b\u1ecf s\u00f3t.<\/p>\n\n\n\n
C\u00f4ng th\u1ee9c n\u00e0y \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng d\u1ef1a tr\u00ean u\u1ed1n kh\u00ed th\u00e9p m\u1ec1m \u1edf kho\u1ea3ng 60.000 PSI s\u1ee9c b\u1ec1n k\u00e9o<\/strong>. H\u1eb1ng s\u1ed1 575 \u0111\u00e3 bao g\u1ed3m gi\u1ea3 \u0111\u1ecbnh \u0111\u00f3. Thay \u0111\u1ed5i v\u1eadt li\u1ec7u, v\u00e0 h\u1eb1ng s\u1ed1 \u0111\u00f3 s\u1ebd n\u00f3i d\u1ed1i b\u1ea1n.<\/p>\n\n\n\nV\u1eady l\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 \u0111i\u1ec1u ch\u1ec9nh m\u00e0 kh\u00f4ng ph\u1ea3i vi\u1ebft l\u1ea1i to\u00e0n b\u1ed9 ph\u01b0\u01a1ng tr\u00ecnh?<\/p>\n\n\n\n
H\u1ec7 s\u1ed1 nh\u00e2n v\u1eadt li\u1ec7u: \u00c1p d\u1ee5ng c\u00e1c h\u1ec7 s\u1ed1 \u0111i\u1ec1u ch\u1ec9nh cho h\u1ee3p kim c\u01b0\u1eddng \u0111\u1ed9 cao v\u00e0 t\u00ecnh tr\u1ea1ng v\u1eadt li\u1ec7u<\/h3>\n\n\n\n
T\u00f4i \u0111\u00e3 ch\u1ee9ng ki\u1ebfn m\u1ed9t x\u01b0\u1edfng chuy\u1ec3n t\u1eeb A36 sang th\u00e9p kh\u00f4ng g\u1ec9 304 v\u00e0 v\u1eabn gi\u1eef nguy\u00ean c\u00e1c con s\u1ed1 trong b\u1ea3ng. Tu\u1ea7n \u0111\u1ea7u ti\u00ean, kh\u00f4ng c\u00f3 g\u00ec n\u1ed5 tung. Tu\u1ea7n th\u1ee9 hai, \u0111\u1ea7u ch\u00e0y b\u1eaft \u0111\u1ea7u b\u1ecb ph\u00ecnh. Tu\u1ea7n th\u1ee9 ba, h\u1ecd \u0111\u1ed5 l\u1ed7i cho nh\u00e0 cung c\u1ea5p d\u1ee5ng c\u1ee5.<\/p>\n\n\n\n
\u0110i\u1ec1u g\u00ec \u0111\u00e3 thay \u0111\u1ed5i? S\u1ee9c b\u1ec1n k\u00e9o.<\/p>\n\n\n\n
Th\u00e9p m\u1ec1m c\u01a1 b\u1ea3n: ~60.000 PSI. Th\u00e9p kh\u00f4ng g\u1ec9 304: th\u01b0\u1eddng 75.000\u201385.000 PSI.<\/p>\n\n\n\n
\u0110\u00e2y l\u00e0 c\u00e1ch t\u00ednh nhanh tr\u00ean gi\u1ea5y:<\/p>\n\n\n\n
H\u1ec7 s\u1ed1 nh\u00e2n v\u1eadt li\u1ec7u \u2248 (S\u1ee9c b\u1ec1n k\u00e9o th\u1ef1c t\u1ebf) \/ (m\u1ed1c 60.000 PSI)<\/p>\n\n\n\n
N\u1ebfu th\u00e9p kh\u00f4ng g\u1ec9 c\u1ee7a b\u1ea1n l\u00e0 75.000 PSI: 75.000 \/ 60.000 = 1.25<\/strong><\/p>\n\n\n\n\u0110i\u1ec1u \u0111\u00f3 c\u00f3 ngh\u0129a l\u00e0 ph\u00e9p t\u00ednh 139 t\u1ea5n v\u1edbi khu\u00f4n 3 inch? Nh\u00e2n v\u1edbi 1,25.<\/p>\n\n\n\n
B\u00e2y gi\u1edd b\u1ea1n \u0111\u1ea1t 174 t\u1ea5n<\/strong>.<\/p>\n\n\n\nM\u00e1y \u00e9p 150 t\u1ea5n c\u1ee7a b\u1ea1n v\u1eeba \u00e2m th\u1ea7m tr\u1edf n\u00ean thi\u1ebfu t\u1ea3i ph\u1ea3i kh\u00f4ng?<\/p>\n\n\n\n
V\u00e0 \u0111\u00f3 l\u00e0 tr\u01b0\u1edbc khi h\u01b0\u1edbng h\u1ea1t ho\u1eb7c c\u00e1c l\u00f4 nhi\u1ec7t c\u1ee9ng h\u01a1n \u0111\u1ea9y b\u1ea1n th\u00eam 5\u201315%.<\/p>\n\n\n\n
C\u00f4ng vi\u1ec7c \u0111\u1ed9 ch\u00ednh x\u00e1c cao \u0111\u00f4i khi c\u1ea7n nhi\u1ec1u l\u1ef1c h\u01a1n bi\u1ec3u \u0111\u1ed3 g\u1ee3i \u00fd \u0111\u1ec3 gi\u1eef g\u00f3c v\u00e0 ki\u1ec3m so\u00e1t \u0111\u1ed9 b\u1eadt l\u1ea1i. Th\u00e9p kh\u00f4ng ch\u1ec9 c\u1ea7n nhi\u1ec1u l\u1ef1c h\u01a1n \u0111\u1ec3 ch\u1ea3y; n\u00f3 c\u00f2n ch\u1ed1ng l\u1ea1i b\u1ea1n khi tr\u1edf l\u1ea1i. Ng\u01b0\u1eddi v\u1eadn h\u00e0nh b\u00f9 \u0111\u1eafp b\u1eb1ng c\u00e1ch \u00e9p s\u00e2u h\u01a1n, t\u0103ng t\u1ea3i g\u1ea7n cu\u1ed1i h\u00e0nh tr\u00ecnh n\u01a1i l\u1ef1c t\u0103ng nhanh nh\u1ea5t. \u0110\u00f3 l\u00e0 n\u01a1i khu\u00f4n b\u1ecb g\u00e3y x\u1ea3y ra.<\/p>\n\n\n\n
C\u00f4ng th\u1ee9c kh\u00f4ng b\u1ea3o v\u1ec7 b\u1ea1n kh\u1ecfi \u0111i\u1ec1u \u0111\u00f3.<\/p>\n\n\n\n
N\u00f3 ch\u1ec9 l\u00e0m cho r\u1ee7i ro tr\u1edf n\u00ean r\u00f5 r\u00e0ng.<\/p>\n\n\n\n
Nh\u01b0ng ch\u00fang ta v\u1eabn \u0111ang gi\u1ea3 \u0111\u1ecbnh u\u1ed1n b\u1eb1ng kh\u00f4ng kh\u00ed. V\u00e0 gi\u1ea3 \u0111\u1ecbnh \u0111\u00f3 c\u00f3 th\u1ec3 nh\u00e2n \u0111\u00f4i l\u1ef1c c\u1ee7a b\u1ea1n trong ch\u1edbp m\u1eaft.<\/p>\n\n\n\n
C\u1eafm c\u00e1c bi\u1ebfn th\u1ef1c t\u1ebf: M\u1ed9t v\u00ed d\u1ee5 t\u1eebng b\u01b0\u1edbc t\u1eeb ph\u00f4i \u0111\u1ebfn u\u1ed1n<\/h3>\n\n\n\n
H\u00e3y ch\u1ea1y n\u00f3 s\u1ea1ch s\u1ebd, t\u1eeb \u0111\u1ea7u.<\/p>\n\n\n\n
K\u1ecbch b\u1ea3n:<\/strong><\/p>\n\n\n\n\n- V\u1eadt li\u1ec7u: Th\u00e9p kh\u00f4ng g\u1ec9 304 d\u00e0y 1\/4 inch \u1edf 75.000 PSI<\/li>\n\n\n\n
- Chi\u1ec1u d\u00e0i u\u1ed1n: 120 inch<\/li>\n\n\n\n
- Khu\u00f4n: V 3 inch<\/li>\n\n\n\n
- Ph\u01b0\u01a1ng ph\u00e1p: U\u1ed1n b\u1eb1ng kh\u00f4ng kh\u00ed<\/li>\n<\/ul>\n\n\n\n
B\u01b0\u1edbc 1 \u2014 T\u00ednh to\u00e1n c\u01a1 b\u1ea3n u\u1ed1n b\u1eb1ng kh\u00f4ng kh\u00ed (m\u1ed1c th\u00e9p m\u1ec1m):<\/strong><\/p>\n\n\n\nT = 0,25 T\u00b2 = 0,0625<\/p>\n\n\n\n
575 \u00d7 0,0625 \u00d7 120 \u00f7 3 = 575 \u00d7 7,5 \u00f7 3 = 4.312,5 \u00f7 3 \u2248 1.437,5 (theo thang quy \u0111\u1ed5i tr\u0103m c\u00e2n) \u2248 139 t\u1ea5n<\/strong> cho u\u1ed1n b\u1eb1ng kh\u00f4ng kh\u00ed th\u00e9p m\u1ec1m<\/p>\n\n\n\nB\u01b0\u1edbc 2 \u2014 \u00c1p d\u1ee5ng h\u1ec7 s\u1ed1 nh\u00e2n v\u1eadt li\u1ec7u:<\/strong><\/p>\n\n\n\n75,000 \/ 60,000 = 1.25<\/p>\n\n\n\n
139 \u00d7 1,25 = 174 t\u1ea5n<\/strong><\/p>\n\n\n\nB\u01b0\u1edbc 3 \u2014 Ki\u1ec3m tra ph\u00e2n b\u1ed1 theo m\u1ed7i foot:<\/strong><\/p>\n\n\n\n174 t\u1ea5n \u00f7 10 ft = 17,4 t\u1ea5n m\u1ed7i foot.<\/p>\n\n\n\n
N\u1ebfu m\u00e1y ch\u1ea5n 150 t\u1ea5n, d\u00e0i 10 feet c\u1ee7a b\u1ea1n \u0111\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1 kho\u1ea3ng 25 t\u1ea5n\/foot ph\u00e2n b\u1ed1 \u0111\u1ec1u, th\u00ec v\u1ec1 m\u1eb7t k\u1ebft c\u1ea5u b\u1ea1n \u1ed5n \u2014 nh\u01b0ng b\u1ea1n \u0111\u00e3 v\u01b0\u1ee3t qu\u00e1 t\u1ed5ng c\u00f4ng su\u1ea5t c\u1ee7a m\u00e1y.<\/p>\n\n\n\n
V\u00ec v\u1eady b\u1ea1n ho\u1eb7c:<\/p>\n\n\n\n
\n- T\u0103ng k\u00edch th\u01b0\u1edbc khe V,<\/li>\n\n\n\n
- R\u00fat ng\u1eafn chi\u1ec1u d\u00e0i u\u1ed1n,<\/li>\n\n\n\n
- Ho\u1eb7c chuy\u1ec3n sang m\u00e1y ch\u1ea5n l\u1edbn h\u01a1n.<\/li>\n<\/ul>\n\n\n\n
Gi\u1edd ch\u1ec9 thay \u0111\u1ed5i m\u1ed9t \u0111i\u1ec1u: chuy\u1ec3n t\u1eeb u\u1ed1n kh\u00f4ng ch\u1ea1m (air bending) sang u\u1ed1n ch\u1ea1m \u0111\u00e1y<\/strong>.<\/p>\n\n\n\nU\u1ed1n \u0111\u00e1y (bottom bending) th\u01b0\u1eddng y\u00eau c\u1ea7u \u00edt nh\u1ea5t g\u1ea5p 2\u00d7 t\u1ea3i u\u1ed1n kh\u00f4ng ch\u1ea1m<\/strong> cho c\u00f9ng thi\u1ebft l\u1eadp.<\/p>\n\n\n\n174 \u00d7 2 = 348 t\u1ea5n<\/strong>.<\/p>\n\n\n\n\u0110\u00f3 kh\u00f4ng ph\u1ea3i l\u00e0 m\u1ed9t \u0111i\u1ec1u ch\u1ec9nh nh\u1ecf. \u0110\u00f3 l\u00e0 m\u1ed9t lo\u1ea1i m\u00e1y kh\u00e1c h\u1eb3n.<\/p>\n\n\n\n
\u0110\u00e2y l\u00e0 l\u00fd do g\u1ecdi n\u00f3 l\u00e0 c\u00f4ng th\u1ee9c \u201cph\u1ed5 qu\u00e1t\u201d m\u00e0 kh\u00f4ng n\u00eau ph\u01b0\u01a1ng ph\u00e1p u\u1ed1n l\u00e0 c\u00e1ch khi\u1ebfn c\u00e1c x\u01b0\u1edfng b\u1ecb n\u1ee9t vai m\u00e1y v\u00e0 b\u00e0n m\u00e1y b\u1ecb cong v\u0129nh vi\u1ec5n \u1edf gi\u1eefa. Ph\u01b0\u01a1ng tr\u00ecnh cho b\u1ea1n gi\u00e1 tr\u1ecb c\u01a1 b\u1ea3n cho u\u1ed1n kh\u00f4ng ch\u1ea1m. Ph\u01b0\u01a1ng ph\u00e1p x\u00e1c \u0111\u1ecbnh h\u1ec7 s\u1ed1 nh\u00e2n.<\/p>\n\n\n\n
V\u00ec v\u1eady tr\u01b0\u1edbc khi \u0111\u1ea7u m\u00e1y ch\u1ea5n \u0111i xu\u1ed1ng, danh s\u00e1ch ki\u1ec3m tra c\u1ee7a b\u1ea1n kh\u00f4ng ph\u1ea3i l\u00e0:<\/p>\n\n\n\n
\u201cBi\u1ec3u \u0111\u1ed3 n\u00f3i g\u00ec?\u201d<\/p>\n\n\n\n
M\u00e0 l\u00e0:<\/p>\n\n\n\n
\n- \u0110\u1ed9 d\u00e0y b\u00ecnh ph\u01b0\u01a1ng.<\/li>\n\n\n\n
- Nh\u00e2n v\u1edbi chi\u1ec1u d\u00e0i v\u00e0 h\u1eb1ng s\u1ed1 c\u01a1 b\u1ea3n.<\/li>\n\n\n\n
- Chia cho k\u00edch th\u01b0\u1edbc khe V th\u1ef1c t\u1ebf.<\/li>\n\n\n\n
- Nh\u00e2n v\u1edbi t\u1ef7 l\u1ec7 \u0111\u1ed9 b\u1ec1n k\u00e9o c\u1ee7a v\u1eadt li\u1ec7u.<\/li>\n\n\n\n
- Nh\u00e2n l\u1ea1i n\u1ebfu b\u1ea1n kh\u00f4ng \u0111ang u\u1ed1n gi\u00f3.<\/li>\n\n\n\n
- Chia cho chi\u1ec1u d\u00e0i u\u1ed1n v\u00e0 so s\u00e1nh v\u1edbi gi\u1edbi h\u1ea1n m\u00e1y t\u00ednh theo m\u1ed7i inch.<\/li>\n<\/ol>\n\n\n\n
B\u1ecf s\u00f3t m\u1ed9t trong nh\u1eefng b\u01b0\u1edbc \u0111\u00f3, v\u00e0 b\u1ea1n s\u1ebd l\u00e0 ng\u01b0\u1eddi ph\u1ea3i gi\u1ea3i th\u00edch cho ch\u1ee7 m\u00e1y v\u00ec sao b\u1ed9 d\u1ee5ng c\u1ee5 $10,000 b\u1ecb s\u1ee9t m\u1ebb ch\u1ec9 v\u00ec ph\u00e9p t\u00ednh \u201cg\u1ea7n \u0111\u00fang\u201d l\u00e0 \u0111\u1ee7.\u201d<\/p>\n\n\n\n
Ch\u00fang ta \u0111\u00e3 x\u00e2y d\u1ef1ng \u0111\u01b0\u1eddng c\u01a1 s\u1edf. Gi\u1edd b\u1ea1n c\u00f3 th\u1ec3 t\u00ednh to\u00e1n l\u1ef1c u\u1ed1n gi\u00f3 th\u1ef1c t\u1ebf thay v\u00ec tin v\u00e0o m\u1ed9t ph\u1ecfng \u0111o\u00e1n l\u1ecbch s\u1ef1.<\/p>\n\n\n\n
Nh\u01b0ng chuy\u1ec7n g\u00ec x\u1ea3y ra khi u\u1ed1n \u00e9p, u\u1ed1n \u0111\u00e1y ho\u1eb7c t\u1ea1o h\u00ecnh \u0111\u1eb7c bi\u1ec7t thay \u0111\u1ed5i ho\u00e0n to\u00e0n v\u1eadt l\u00fd v\u00e0 bi\u1ebfn \u0111\u01b0\u1eddng c\u01a1 s\u1edf \u0111\u00f3 th\u00e0nh m\u1ed9t s\u1ef1 \u0111\u00e1nh gi\u00e1 th\u1ea5p nguy hi\u1ec3m?<\/p>\n\n\n\n
\u0110i\u1ec1u ch\u1ec9nh theo ph\u01b0\u01a1ng ph\u00e1p u\u1ed1n c\u1ee7a b\u1ea1n: B\u1ea3ng ch\u1ec9 k\u1ec3 m\u1ed9t c\u00e2u chuy\u1ec7n<\/h2>\n\n\n\n
B\u1ea1n c\u00f3 c\u00f4ng vi\u1ec7c th\u00e9p kh\u00f4ng g\u1ec9 304 d\u00e0y 1\/4 inch m\u00e0 ch\u00fang ta v\u1eeba t\u00ednh to\u00e1n \u2014 174 t\u1ea5n khi u\u1ed1n gi\u00f3 tr\u00ean 10 feet v\u1edbi V 3 inch. M\u00e1y \u0111\u00e3 c\u0103ng \u1edf m\u1ee9c c\u00f4ng su\u1ea5t 150 t\u1ea5n. Gi\u1edd gi\u1ea3 s\u1eed b\u1ea1n quy\u1ebft \u0111\u1ecbnh g\u00f3c ph\u1ea3i ch\u00ednh x\u00e1c tuy\u1ec7t \u0111\u1ed1i v\u00e0 b\u1ea1n kh\u00f4ng tin v\u00e0o \u0111\u1ed9 h\u1ed3i l\u00f2 xo. V\u00ec v\u1eady b\u1ea1n chuy\u1ec3n t\u1eeb u\u1ed1n gi\u00f3 sang u\u1ed1n \u0111\u00e1y m\u00e0 kh\u00f4ng thay \u0111\u1ed5i ph\u00e9p t\u00ednh.<\/p>\n\n\n\n
C\u1eef ch\u00e0y h\u1ea1 xu\u1ed1ng.<\/p>\n\n\n\n
B\u1ea1n kh\u00f4ng thay \u0111\u1ed5i \u0111\u1ed9 d\u00e0y. Kh\u00f4ng thay \u0111\u1ed5i chi\u1ec1u d\u00e0i. Kh\u00f4ng thay \u0111\u1ed5i khu\u00f4n. Nh\u01b0ng b\u1ea1n \u0111\u00e3 thay \u0111\u1ed5i v\u1eadt l\u00fd. V\u00e0 \u0111\u00f3 l\u00e0 l\u00fac ng\u01b0\u1eddi ta bi\u1ebfn m\u1ed9t ph\u00e9p t\u00ednh ki\u1ec3m so\u00e1t th\u00e0nh m\u1ed9t khu\u00f4n b\u1ecb g\u00e3y v\u00e0 m\u1ed9t cu\u1ed9c g\u1ecdi m\u00e0 kh\u00f4ng ai mu\u1ed1n th\u1ef1c hi\u1ec7n.<\/p>\n\n\n\n
H\u00e3y ph\u00e2n t\u00edch l\u00fd do t\u1ea1i sao.<\/p>\n\n\n\n
U\u1ed1n gi\u00f3: Gi\u1ea3 \u0111\u1ecbnh c\u01a1 b\u1ea3n c\u1ee7a h\u1ea7u h\u1ebft m\u1ecdi b\u1ea3ng l\u1ef1c u\u1ed1n chung<\/h3>\n\n\n\n
H\u00e3y h\u00ecnh dung ch\u00e0y l\u01a1 l\u1eedng ph\u00eda tr\u00ean khu\u00f4n V. Trong u\u1ed1n gi\u00f3, v\u1eadt li\u1ec7u ti\u1ebfp x\u00fac v\u1edbi m\u0169i ch\u00e0y v\u00e0 hai vai khu\u00f4n. Ba \u0111i\u1ec3m. Ch\u1ec9 v\u1eady th\u00f4i. T\u1ea5m kim lo\u1ea1i kh\u00f4ng bao gi\u1edd ho\u00e0n to\u00e0n n\u1eb1m v\u00e0o khoang khu\u00f4n.<\/p>\n\n\n\n
Y\u00eau c\u1ea7u l\u1ef1c \u0111\u01b0\u1ee3c quy\u1ebft \u0111\u1ecbnh b\u1edfi kho\u1ea3ng c\u00e1ch \u2014 \u0111\u1ed9 m\u1edf V \u2014 v\u00e0 gi\u1edbi h\u1ea1n ch\u1ea3y c\u1ee7a v\u1eadt li\u1ec7u. H\u1eb1ng s\u1ed1 575 m\u00e0 ch\u00fang ta d\u00f9ng? N\u00f3 gi\u1ea3 \u0111\u1ecbnh ch\u00ednh x\u00e1c \u0111i\u1ec1u n\u00e0y: u\u1ed1n gi\u00f3, th\u00e9p m\u1ec1m 60,000 PSI, \u0111\u1ed9 r\u1ed9ng V \u0111i\u1ec3n h\u00ecnh. \u0110\u00e2y l\u00e0 m\u00f4 h\u00ecnh c\u1ee7a m\u1ed9t d\u1ea7m b\u1ecb \u0111\u1ea9y gi\u1eefa hai \u0111i\u1ec3m t\u1ef1a.<\/p>\n\n\n\n
B\u1ea1n kh\u00f4ng \u00e9p kim lo\u1ea1i kh\u1edbp v\u1edbi b\u00e1n k\u00ednh khu\u00f4n. B\u1ea1n \u0111\u1ec3 n\u00f3 n\u1ed5i v\u00e0 h\u1ed3i l\u00f2 xo m\u1ed9t ch\u00fat. \u0110\u00f3 l\u00e0 l\u00fd do \u0111\u1ed9 m\u1edf V quan tr\u1ecdng \u0111\u1ebfn m\u1ee9c d\u1eef d\u1ed9i \u2014 b\u1ea1n \u0111ang ki\u1ec3m so\u00e1t \u0111\u00f2n b\u1ea9y, kh\u00f4ng nghi\u1ec1n n\u00e1t chi ti\u1ebft th\u00e0nh h\u00ecnh d\u1ea1ng.<\/p>\n\n\n\n
V\u00e0 v\u00ec ch\u1ec9 ba \u0111i\u1ec3m ti\u1ebfp x\u00fac ch\u1ecbu t\u1ea3i, l\u1ef1c u\u1ed1n t\u0103ng \u0111\u1ec1u khi \u0111\u1ed9 xuy\u00ean s\u00e2u t\u0103ng. D\u1ef1 \u0111o\u00e1n \u0111\u01b0\u1ee3c. Ki\u1ec3m so\u00e1t \u0111\u01b0\u1ee3c. \u0110\u00f3 l\u00e0 l\u00fd do 80% c\u1ee7a c\u00e1c b\u1ea3ng chung \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng quanh u\u1ed1n gi\u00f3. N\u00f3 d\u1ec5 tha th\u1ee9. N\u00f3 hi\u1ec7u qu\u1ea3. N\u00f3 gi\u1eef cho m\u00e1y s\u1ed1ng.<\/p>\n\n\n\n
Ngay c\u1ea3 c\u00e1c b\u1ea3ng b\u1ea3o th\u1ee7 t\u1eeb nh\u1eefng nh\u00e0 s\u1ea3n xu\u1ea5t uy t\u00edn c\u0169ng kh\u1edbp v\u1edbi s\u1ea3n xu\u1ea5t th\u1ef1c t\u1ebf \u2014 v\u00ec h\u1ecd gi\u1ea3 \u0111\u1ecbnh ph\u01b0\u01a1ng ph\u00e1p n\u00e0y. V ti\u00eau chu\u1ea9n, th\u00e9p m\u1ec1m, u\u1ed1n 90 \u0111\u1ed9, u\u1ed1n gi\u00f3. \u1ede trong ph\u1ea1m vi \u0111\u00f3 v\u00e0 \u201cph\u1ecfng \u0111o\u00e1n l\u1ecbch s\u1ef1\u201d ho\u1ea1t \u0111\u1ed9ng h\u1ea7u h\u1ebft th\u1eddi gian.<\/p>\n\n\n\n
Ra ngo\u00e0i ph\u1ea1m vi \u0111\u00f3 v\u00e0 b\u1ea3ng kh\u00f4ng bi\u1ebft b\u1ea1n \u0111\u00e3 r\u1eddi \u0111i.<\/p>\n\n\n\n
V\u1eady \u0111i\u1ec1u g\u00ec thay \u0111\u1ed5i khi t\u1ea5m kim lo\u1ea1i ng\u1eebng n\u1ed5i v\u00e0 b\u1eaft \u0111\u1ea7u b\u1ecb \u00e9p v\u00e0o khu\u00f4n?<\/p>\n\n\n\n
U\u1ed1n \u0111\u00e1y: T\u1ea1i sao \u00e9p v\u1eadt li\u1ec7u \u0111\u1ed9t ng\u1ed9t nh\u00e2n l\u1ef1c y\u00eau c\u1ea7u l\u00ean 3 \u0111\u1ebfn 5 l\u1ea7n<\/h3>\n\n\n\n
V\u1eabn l\u00e0 th\u00e9p kh\u00f4ng g\u1ec9 d\u00e0y 1\/4 inch. V\u1eabn 10 feet. V\u1eabn V 3 inch.<\/p>\n\n\n\n
Trong u\u1ed1n kh\u00f4ng kh\u00ed, ch\u00fang ta \u0111\u00e3 n\u00f3i 174 t\u1ea5n sau khi \u0111i\u1ec1u ch\u1ec9nh v\u1eadt li\u1ec7u.<\/p>\n\n\n\n
B\u00e2y gi\u1edd u\u1ed1n \u0111\u00e1y n\u00f3.<\/p>\n\n\n\n
U\u1ed1n \u0111\u00e1y ngh\u0129a l\u00e0 b\u1ea1n \u00e9p v\u1eadt li\u1ec7u cho \u0111\u1ebfn khi n\u00f3 ho\u00e0n to\u00e0n ti\u1ebfp x\u00fac v\u1edbi g\u00f3c khu\u00f4n. Kh\u00f4ng ph\u1ea3i ba \u0111i\u1ec3m. Ti\u1ebfp x\u00fac li\u00ean t\u1ee5c d\u1ecdc theo c\u1ea3 hai m\u1eb7t khu\u00f4n. B\u1ea1n kh\u00f4ng c\u00f2n ch\u1ec9 l\u00e0m kim lo\u1ea1i ch\u1ea3y n\u1eefa. B\u1ea1n \u0111ang \u00e9p n\u00f3 v\u00e0o h\u00ecnh d\u1ea1ng.<\/p>\n\n\n\n
S\u1ef1 \u00e9p n\u00e0y ti\u00eau t\u1ed1n l\u1ef1c.<\/p>\n\n\n\n
H\u1ec7 s\u1ed1 nh\u00e2n trong ng\u00e0nh th\u01b0\u1eddng ch\u1ea1y t\u1eeb 3\u00d7 \u0111\u1ebfn 5\u00d7 so v\u1edbi m\u1ee9c c\u01a1 b\u1ea3n c\u1ee7a u\u1ed1n kh\u00f4ng kh\u00ed. M\u1ed9t s\u1ed1 b\u1ea3ng d\u1eef li\u1ec7u \u0111\u1ea9y l\u00ean 5.0+ nh\u01b0 m\u1ed9t y\u1ebfu t\u1ed1 l\u1eadp k\u1ebf ho\u1ea1ch. H\u00e3y gi\u1eef b\u1ea3o th\u1ee7 v\u00e0 g\u1ecdi n\u00f3 l\u00e0 3\u00d7 \u0111\u1ed1i v\u1edbi th\u00e9p kh\u00f4ng g\u1ec9.<\/p>\n\n\n\n
174 \u00d7 3 = 522 t\u1ea5n.<\/p>\n\n\n\n
N\u0103m tr\u0103m hai m\u01b0\u01a1i hai.<\/p>\n\n\n\n
B\u1ea1n kh\u00f4ng t\u0103ng d\u1ea7n l\u00ean \u0111\u00f3 t\u1eeb t\u1eeb. B\u1ea1n \u0111\u1ea1t \u0111\u01b0\u1ee3c ngay trong m\u1ed9t c\u00fa \u0111\u1ea1p b\u00e0n \u0111\u1ea1p v\u00ec piston kh\u00f4ng quan t\u00e2m \u0111\u1ebfn gi\u1ea3 \u0111\u1ecbnh c\u1ee7a b\u1ea1n. N\u00f3 ch\u1ec9 theo th\u1ee7y l\u1ef1c.<\/p>\n\n\n\n
V\u00e0 \u0111\u00e2y l\u00e0 l\u00fd do c\u01a1 h\u1ecdc: trong u\u1ed1n kh\u00f4ng kh\u00ed, m\u1ed9t khi \u0111\u1ea1t gi\u1edbi h\u1ea1n ch\u1ea3y \u1edf c\u00e1c s\u1ee3i ngo\u00e0i, ph\u1ea7n c\u00f2n l\u1ea1i c\u1ee7a ti\u1ebft di\u1ec7n theo sau v\u1edbi m\u1ee9c t\u0103ng t\u1ea3i t\u01b0\u01a1ng \u0111\u1ed1i khi\u00eam t\u1ed1n. Trong u\u1ed1n \u0111\u00e1y, khi chi ti\u1ebft ng\u1ed3i v\u00e0o khu\u00f4n, l\u1ef1c c\u1ea3n t\u0103ng v\u1ecdt g\u1ea7n cu\u1ed1i h\u00e0nh tr\u00ecnh. B\u1ea1n \u0111ang n\u00e9n c\u00e1c s\u1ee3i b\u00ean trong v\u00e0 k\u00e9o gi\u00e3n c\u00e1c s\u1ee3i b\u00ean ngo\u00e0i trong khi c\u1ed1 \u0111\u1ecbnh g\u00f3c. \u0110\u01b0\u1eddng cong t\u1ea3i t\u0103ng m\u1ea1nh ngay tr\u01b0\u1edbc khi ti\u1ebfp x\u00fac ho\u00e0n to\u00e0n.<\/p>\n\n\n\n
S\u1ef1 t\u0103ng v\u1ecdt \u0111\u00f3 l\u00e0 n\u01a1i d\u1ee5ng c\u1ee5 h\u1ecfng.<\/p>\n\n\n\n
C\u00f4ng vi\u1ec7c ch\u00ednh x\u00e1c cao \u0111\u00f4i khi c\u1ea7n nhi\u1ec1u l\u1ef1c h\u01a1n so v\u1edbi b\u1ea3ng bi\u1ec3u g\u1ee3i \u00fd \u0111\u1ec3 gi\u1eef g\u00f3c v\u00e0 ki\u1ec3m so\u00e1t \u0111\u1ed9 b\u1eadt l\u1ea1i. Ng\u01b0\u1eddi v\u1eadn h\u00e0nh b\u00f9 b\u1eb1ng c\u00e1ch \u00e9p s\u00e2u h\u01a1n. Trong u\u1ed1n kh\u00f4ng kh\u00ed, \u0111\u00f3 l\u00e0 t\u0103ng d\u1ea7n. Trong u\u1ed1n \u0111\u00e1y, \u0111\u00f3 l\u00e0 t\u0103ng theo c\u1ea5p s\u1ed1 nh\u00e2n g\u1ea7n \u0111\u00e1y. G\u00f3c nh\u1ecdn l\u00e0m t\u00ecnh h\u00ecnh t\u1ec7 h\u01a1n v\u00ec t\u1ea3i d\u1ecbch ra ngo\u00e0i v\u1ec1 ph\u00eda vai khu\u00f4n, t\u1eadp trung \u1ee9ng su\u1ea5t.<\/p>\n\n\n\n
V\u00e0 \u0111i\u1ec1u m\u00e0 anh ta kh\u00f4ng bao gi\u1edd ki\u1ec3m tra l\u00e0 b\u00e0n m\u00e1y.<\/p>\n\n\n\n
M\u00e1y c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u0111\u1ecbnh m\u1ee9c 150 t\u1ea5n t\u1ed5ng, c\u00f3 th\u1ec3 25 t\u1ea5n m\u1ed7i foot ph\u00e2n b\u1ed1 \u0111\u1ec1u. B\u1ea1n v\u1eeba y\u00eau c\u1ea7u t\u01b0\u01a1ng \u0111\u01b0\u01a1ng h\u01a1n 50 t\u1ea5n m\u1ed7i foot. Ngay c\u1ea3 khi th\u1ee7y l\u1ef1c c\u00f3 th\u1ec3 c\u1ed1, khung m\u00e1y s\u1ebd u\u1ed1n, b\u00e0n m\u00e1y b\u1ecb bi\u1ebfn d\u1ea1ng, v\u00e0 m\u1ed9t ng\u00e0y b\u1ea1n nh\u1eadn ra n\u00f3 c\u00f3 m\u1ed9t n\u1ee5 c\u01b0\u1eddi v\u0129nh vi\u1ec5n \u1edf gi\u1eefa.<\/p>\n\n\n\n
T\u1ea5t c\u1ea3 ch\u1ec9 v\u00ec b\u1ea3ng bi\u1ec3u ch\u1ec9 k\u1ec3 c\u00e2u chuy\u1ec7n u\u1ed1n kh\u00f4ng kh\u00ed.<\/p>\n\n\n\n
N\u1ebfu u\u1ed1n \u0111\u00e1y c\u00f3 th\u1ec3 t\u0103ng g\u1ea5p ba t\u1ea3i c\u1ee7a b\u1ea1n, b\u1ea1n ngh\u0129 \u0111i\u1ec1u g\u00ec s\u1ebd x\u1ea3y ra khi b\u1ea1n quy\u1ebft \u0111\u1ecbnh mu\u1ed1n m\u1ed9t b\u00e1n k\u00ednh b\u00ean trong \u201cho\u00e0n h\u1ea3o\u201d?<\/p>\n\n\n\n
D\u1eadp \u0111\u1ed3ng: Vi\u1ec7c \u0111\u1ea1t \u0111\u01b0\u1ee3c b\u00e1n k\u00ednh ho\u00e0n h\u1ea3o c\u00f3 bao gi\u1edd \u0111\u00e1ng v\u1edbi c\u00fa t\u0103ng t\u1ea3i kh\u1ed5ng l\u1ed3 kh\u00f4ng?<\/h3>\n\n\n\n
D\u1eadp \u0111\u1ed3ng kh\u00f4ng c\u00f2n l\u00e0 u\u1ed1n theo ngh\u0129a d\u1ea7m n\u1eefa. N\u00f3 l\u00e0 nghi\u1ec1n c\u00f3 ki\u1ec3m so\u00e1t.<\/p>\n\n\n\n
B\u1ea1n \u00e9p \u0111\u1ea7u ch\u00e0y v\u00e0o v\u1eadt li\u1ec7u \u0111\u1ee7 m\u1ea1nh \u0111\u1ec3 bi\u1ebfn d\u1ea1ng d\u1ebbo to\u00e0n b\u1ed9 \u0111\u1ed9 d\u00e0y t\u1ea1i \u0111\u01b0\u1eddng u\u1ed1n. B\u1ea1n x\u00f3a \u0111\u1ed9 b\u1eadt l\u1ea1i b\u1eb1ng l\u1ef1c th\u00f4. B\u00e1n k\u00ednh b\u00ean trong tr\u1edf th\u00e0nh b\u00e1n k\u00ednh ch\u00e0y v\u00ec b\u1ea1n \u0111\u00e3 l\u00e0m ch\u1ea3y m\u1ecdi th\u1ee9 xuy\u00ean qua ti\u1ebft di\u1ec7n.<\/p>\n\n\n\n
H\u1ec7 s\u1ed1 nh\u00e2n 10\u00d7 so v\u1edbi m\u1ee9c c\u01a1 b\u1ea3n c\u1ee7a u\u1ed1n kh\u00f4ng kh\u00ed kh\u00f4ng ph\u1ea3i l\u00e0 ph\u00f3ng \u0111\u1ea1i trong c\u00e1c h\u01b0\u1edbng d\u1eabn l\u1eadp k\u1ebf ho\u1ea1ch. Ch\u00fang l\u00e0 y\u1ebfu t\u1ed1 s\u1ed1ng c\u00f2n.<\/p>\n\n\n\n
L\u1ea5y v\u00ed d\u1ee5 th\u00e9p kh\u00f4ng g\u1ec9 u\u1ed1n kh\u00f4ng kh\u00ed 174 t\u1ea5n c\u1ee7a ch\u00fang ta.<\/p>\n\n\n\n
174 \u00d7 10 = 1.740 t\u1ea5n.<\/p>\n\n\n\n
\u0110\u00f3 kh\u00f4ng ph\u1ea3i l\u1ed7i \u0111\u00e1nh m\u00e1y.<\/p>\n\n\n\n
Gi\u1edd, tr\u01b0\u1edbc khi b\u1ea1n tranh lu\u1eadn r\u1eb1ng nh\u00f4m s\u1ebd l\u00e0m gi\u1ea3m con s\u1ed1 \u2014 \u0111\u00fang, v\u1eadt li\u1ec7u c\u00f3 \u1ea3nh h\u01b0\u1edfng. M\u1ed9t h\u1ee3p kim m\u1ec1m c\u00f3 th\u1ec3 gi\u1ea3m m\u1ed9t n\u1eeda gi\u00e1 tr\u1ecb c\u01a1 b\u1ea3n tr\u01b0\u1edbc khi b\u1ea1n \u00e1p d\u1ee5ng h\u1ec7 s\u1ed1 ph\u01b0\u01a1ng ph\u00e1p. Nh\u01b0ng h\u1ec7 s\u1ed1 ph\u01b0\u01a1ng ph\u00e1p v\u1eabn \u00e1p d\u1ee5ng. Nghi\u1ec1n kim lo\u1ea1i \u0111\u00f2i h\u1ecfi l\u1ef1c l\u1edbn h\u01a1n nhi\u1ec1u so v\u1edbi u\u1ed1n cong, d\u00f9 n\u00f3 m\u1ec1m \u0111\u1ebfn \u0111\u00e2u.<\/p>\n\n\n\n
V\u1ec1 m\u1eb7t c\u01a1 h\u1ecdc, d\u1eadp \u0111\u1ed3ng xu lo\u1ea1i b\u1ecf s\u1ef1 d\u1ecbch chuy\u1ec3n tr\u1ee5c trung h\u00f2a v\u1ed1n l\u00e0m cho u\u1ed1n kh\u00ed hi\u1ec7u qu\u1ea3. B\u1ea1n \u0111ang bu\u1ed9c bi\u1ebfn d\u1ea1ng d\u1ebbo \u0111\u1ed3ng \u0111\u1ec1u tr\u00ean to\u00e0n b\u1ed9 \u0111\u1ed9 d\u00e0y. \u1ee8ng su\u1ea5t kh\u00f4ng c\u00f2n t\u1eadp trung \u1edf c\u00e1c s\u1ee3i ngo\u00e0i n\u1eefa. N\u00f3 xu\u1ea5t hi\u1ec7n kh\u1eafp n\u01a1i c\u00f9ng l\u00fac. M\u00e1y ch\u1ea5n tr\u1edf th\u00e0nh m\u00e1y r\u00e8n trong m\u1ed9t kho\u1ea3nh kh\u1eafc.<\/p>\n\n\n\n
\u0110\u00f3 l\u00e0 l\u00fd do t\u1ea1i sao d\u1eadp \u0111\u1ed3ng xu hi\u1ebfm khi \u0111\u01b0\u1ee3c d\u00f9ng tr\u00ean m\u00e1y ch\u1ea5n hi\u1ec7n \u0111\u1ea1i, tr\u1eeb v\u1eadt li\u1ec7u m\u1ecfng ho\u1eb7c t\u1ea1o h\u00ecnh \u0111\u1eb7c bi\u1ec7t. Nhu c\u1ea7u l\u1ef1c t\u0103ng v\u1ecdt nhanh \u0111\u1ebfn m\u1ee9c ch\u1ec9 nh\u1eefng chi\u1ec1u d\u00e0i u\u1ed1n r\u1ea5t ng\u1eafn m\u1edbi kh\u1ea3 thi. V\u00e0i inch, c\u00f3 th\u1ec3. Kh\u00f4ng ph\u1ea3i m\u01b0\u1eddi feet.<\/p>\n\n\n\n
V\u1eady khi n\u00e0o th\u00ec \u0111\u00e1ng \u0111\u1ec3 l\u00e0m?<\/p>\n\n\n\n
Khi dung sai y\u00eau c\u1ea7u tuy\u1ec7t \u0111\u1ed1i kh\u00f4ng c\u00f3 \u0111\u1ed9 b\u1eadt l\u1ea1i v\u00e0 chi ti\u1ebft \u0111\u1ee7 ng\u1eafn \u0111\u1ec3 t\u1ed5ng l\u1ef1c v\u1eabn n\u1eb1m trong gi\u1edbi h\u1ea1n c\u1ee7a m\u00e1y v\u00e0 d\u1ee5ng c\u1ee5. \u0110\u00f3 l\u00e0 quy\u1ebft \u0111\u1ecbnh k\u1ef9 thu\u1eadt c\u00f3 \u00fd th\u1ee9c, kh\u00f4ng ph\u1ea3i m\u1eb9o c\u1ee7a ng\u01b0\u1eddi v\u1eadn h\u00e0nh v\u00ec \u201cg\u00f3c \u0111ang ch\u1ed1ng l\u1ea1i t\u00f4i.\u201d<\/p>\n\n\n\n
Chuy\u1ec3n ph\u01b0\u01a1ng ph\u00e1p m\u00e0 kh\u00f4ng t\u00ednh to\u00e1n l\u1ea1i th\u00ec b\u1ea1n kh\u00f4ng ch\u1ec9 \u0111i\u1ec1u ch\u1ec9nh nh\u1ecf. B\u1ea1n \u0111ang nh\u1ea3y sang h\u1ea1ng m\u00e1y kh\u00e1c.<\/p>\n\n\n\n
V\u00e0 ngay c\u1ea3 khi t\u1ed5ng l\u1ef1c t\u00ednh to\u00e1n tr\u00ean gi\u1ea5y v\u1eabn \u1ed5n, ch\u00fang ta ch\u01b0a n\u00f3i v\u1ec1 c\u00e1ch l\u1ef1c \u0111\u00f3 ph\u00e2n b\u1ed1 d\u1ecdc theo b\u00e0n \u2014 v\u00ec 200 t\u1ea5n ph\u00e2n b\u1ed1 \u0111\u1ec1u l\u00e0 m\u1ed9t chuy\u1ec7n, c\u00f2n 200 t\u1ea5n t\u1eadp trung tr\u00ean v\u00e0i inch l\u00e0 c\u00e1ch khi\u1ebfn vai m\u00e1y n\u1ee9t v\u00e0 khu\u00f4n b\u1ecb m\u1ebb.<\/p>\n\n\n\n
Gi\u1edbi h\u1ea1n t\u1ea3i t\u1eadp trung: Khi m\u00e1y s\u1ed1ng s\u00f3t nh\u01b0ng d\u1ee5ng c\u1ee5 c\u1ee7a b\u1ea1n g\u00e3y<\/h2>\n\n\n\n
H\u00e3y h\u00ecnh dung th\u1ebf n\u00e0y: m\u00e1y ch\u1ea5n 300 t\u1ea5n, d\u00e0i 12 feet. B\u1ea1n ch\u1ea1y m\u1ed9t u\u1ed1n kh\u00ed d\u00e0i 12 feet \u1edf 180 t\u1ea5n. M\u00e1y ch\u1eb3ng h\u1ec1 h\u1ea5n. Th\u1ee7y l\u1ef1c \u1ed5n \u0111\u1ecbnh. Khung v\u1eabn th\u1eb3ng.<\/p>\n\n\n\n
C\u00f4ng vi\u1ec7c ti\u1ebfp theo l\u00e0 m\u1ed9t gi\u00e1 \u0111\u1ee1 d\u00e0i 12 inch b\u1eb1ng t\u1ea5m d\u00e0y 3\/8 inch. M\u00e1y t\u00ednh n\u00f3i t\u1ed5ng l\u1ef1c 90 t\u1ea5n. Th\u1ea5p h\u01a1n nhi\u1ec1u so v\u1edbi 300. B\u1ea1n m\u1ec9m c\u01b0\u1eddi, nh\u1ea5n b\u00e0n \u0111\u1ea1p.<\/p>\n\n\n\n
C\u1eef ch\u00e0y h\u1ea1 xu\u1ed1ng.<\/p>\n\n\n\n
M\u00e1y s\u1ed1ng s\u00f3t. Khu\u00f4n th\u00ec kh\u00f4ng.<\/p>\n\n\n\n
\u0110\u00e2y l\u00e0 l\u00fd do. 90 t\u1ea5n \u0111\u00f3 kh\u00f4ng c\u00f2n ph\u00e2n b\u1ed1 tr\u00ean 12 feet n\u1eefa. N\u00f3 b\u1ecb d\u1ed3n v\u00e0o m\u1ed9t foot. 90 t\u1ea5n m\u1ed7i foot. N\u1ebfu khu\u00f4n c\u1ee7a b\u1ea1n \u0111\u01b0\u1ee3c \u0111\u1ecbnh m\u1ee9c 80 t\u1ea5n m\u1ed7i m\u00e9t \u2014 kho\u1ea3ng 24 t\u1ea5n m\u1ed7i foot \u2014 b\u1ea1n v\u1eeba y\u00eau c\u1ea7u n\u00f3 ch\u1ecbu g\u1ea7n g\u1ea5p b\u1ed1n l\u1ea7n gi\u1edbi h\u1ea1n. M\u00e1y ch\u1ea5n v\u1eabn \u1ed5n v\u00ec t\u1ed5ng l\u1ef1c h\u1ec7 th\u1ed1ng th\u1ea5p. D\u1ee5ng c\u1ee5 h\u1ecfng v\u00ec n\u00f3 ch\u1ec9 quan t\u00e2m \u0111\u1ebfn m\u1eadt \u0111\u1ed9 t\u1ea3i.<\/p>\n\n\n\n
T\u1ed5ng l\u1ef1c gi\u1eef cho khung m\u00e1y s\u1ed1ng. L\u1ef1c m\u1ed7i foot gi\u1eef cho d\u1ee5ng c\u1ee5 nguy\u00ean v\u1eb9n.<\/p>\n\n\n\n
V\u00e0 b\u1ea3ng tra g\u1ea7n nh\u01b0 kh\u00f4ng bao gi\u1edd nh\u1ea5n m\u1ea1nh s\u1ef1 kh\u00e1c bi\u1ec7t \u0111\u00f3 cho b\u1ea1n.<\/p>\n\n\n\n
V\u1eady l\u1ef1c th\u1ef1c s\u1ef1 di chuy\u1ec3n d\u1ecdc theo b\u00e0n th\u1ebf n\u00e0o khi b\u1ea1n t\u1eadp trung n\u00f3?<\/p>\n\n\n\n
Ph\u00e2n b\u1ed1 l\u1ef1c d\u1ecdc theo thanh \u00e9p: T\u1ea1i sao t\u1ea3i \u1edf gi\u1eefa \u00e2m th\u1ea7m ph\u00e1 h\u1ee7y m\u00e1y<\/h3>\n\n\n\n
M\u00e1y ch\u1ea5n 200 t\u1ea5n kh\u00f4ng ph\u00e2n ph\u1ed1i 200 t\u1ea5n \u0111\u1ec1u kh\u1eafp b\u00e0n. H\u00e3y xem b\u1ea5t k\u1ef3 b\u1ea3ng t\u1ea3i c\u1ee7a nh\u00e0 s\u1ea3n xu\u1ea5t n\u00e0o v\u00e0 b\u1ea1n s\u1ebd th\u1ea5y: t\u1ea3i ph\u00e2n b\u1ed1 to\u00e0n chi\u1ec1u d\u00e0i c\u00f3 th\u1ec3 g\u1ea7n b\u1eb1ng \u0111\u1ecbnh m\u1ee9c, nh\u01b0ng kh\u1ea3 n\u0103ng t\u1ea3i \u1edf gi\u1eefa gi\u1ea3m \u2014 \u0111\u00f4i khi ch\u1ec9 c\u00f2n 50\u201370% c\u00f4ng su\u1ea5t \u0111\u1ecbnh m\u1ee9c \u2014 v\u00ec thanh \u00e9p v\u00e0 b\u00e0n b\u1ecb u\u1ed1n.<\/p>\n\n\n\n
Th\u00e9p lu\u00f4n u\u1ed1n cong. Lu\u00f4n lu\u00f4n.<\/p>\n\n\n\n
D\u01b0\u1edbi t\u1ea3i tr\u1ecdng l\u1edbn \u1edf gi\u1eefa, c\u1ea7n \u00e9p cong vi m\u00f4. B\u1ec7 cong theo h\u01b0\u1edbng ng\u01b0\u1ee3c l\u1ea1i. B\u1ea1n s\u1ebd c\u00f3 hi\u1ec7u \u1ee9ng h\u01a1i cong v\u1ed3ng d\u00f9 mu\u1ed1n hay kh\u00f4ng. M\u1ed9t b\u00e1o c\u00e1o \u0111\u1ed9 ch\u00ednh x\u00e1c \u0111o \u0111\u01b0\u1ee3c ch\u1ec9 0,06 mm sai l\u1ec7ch tr\u00ean chi\u1ec1u d\u00e0i b\u00e0n 3200 mm. \u0110\u1ed9 cong nh\u1ecf \u0111\u00f3 chuy\u1ec3n th\u00e0nh kho\u1ea3ng 0,17\u00b0 sai l\u1ec7ch g\u00f3c tr\u00ean to\u00e0n b\u1ed9 chi ti\u1ebft.<\/p>\n\n\n\n
Nghe c\u00f3 v\u1ebb kh\u00f4ng nhi\u1ec1u cho \u0111\u1ebfn khi b\u1ea1n ph\u1ea3i \u0111\u1ea1t dung sai n\u1eeda \u0111\u1ed9 v\u00e0 ch\u00eam khu\u00f4n nh\u01b0 m\u1ed9t ng\u01b0\u1eddi tuy\u1ec7t v\u1ecdng.<\/p>\n\n\n\n
Gi\u1edd h\u00e3y c\u1ed9ng th\u00eam ph\u01b0\u01a1ng ph\u00e1p v\u00e0o \u0111\u00f3. U\u1ed1n \u0111\u00e1y ho\u1eb7c d\u1eadp \u0111\u1ed3ng ti\u1ec1n l\u00e0m t\u0103ng l\u1ef1c \u1edf cu\u1ed1i h\u00e0nh tr\u00ecnh. C\u00fa t\u0103ng l\u1ef1c n\u00e0y x\u1ea3y ra \u0111\u00fang l\u00fac \u0111\u1ed9 cong l\u1edbn nh\u1ea5t. V\u00ec v\u1eady kh\u00f4ng ch\u1ec9 t\u0103ng t\u1ed5ng l\u1ef1c \u00e9p v\u1edbi h\u1ec7 s\u1ed1 ph\u01b0\u01a1ng ph\u00e1p, b\u1ea1n c\u00f2n khu\u1ebfch \u0111\u1ea1i \u1ee9ng su\u1ea5t c\u1ee5c b\u1ed9 \u0111\u00fang n\u01a1i k\u1ebft c\u1ea5u y\u1ebfu nh\u1ea5t \u2014 gi\u1eefa nh\u1ecbp.<\/p>\n\n\n\n
T\u1ea3i tr\u1ecdng t\u1eadp trung \u1edf gi\u1eefa kh\u00f4ng ch\u1ec9 \u0111e d\u1ecda h\u1ecfng h\u00f3c nghi\u00eam tr\u1ecdng. N\u00f3 t\u1eeb t\u1eeb l\u00e0m m\u1ea5t \u0111\u1ed9 ch\u00ednh x\u00e1c c\u1ee7a m\u00e1y. B\u1ec7 b\u1ecb bi\u1ebfn d\u1ea1ng c\u1ed1 \u0111\u1ecbnh. C\u1ea7n \u00e9p ph\u00e1t tri\u1ec3n \u0111\u1ed9 l\u1ec7ch. M\u1ed9t ng\u00e0y n\u00e0o \u0111\u00f3, c\u00e1c chi ti\u1ebft c\u1ee7a b\u1ea1n lu\u00f4n m\u1edf \u1edf gi\u1eefa v\u00e0 ch\u1eb7t \u1edf hai \u0111\u1ea7u.<\/p>\n\n\n\n
\u0110i\u1ec1u anh ta kh\u00f4ng bao gi\u1edd ki\u1ec3m tra l\u00e0 m\u1eb7t b\u00e0n.<\/p>\n\n\n\n
Nh\u01b0ng ngay c\u1ea3 khi khung m\u00e1y ch\u1ecbu \u0111\u01b0\u1ee3c nhi\u1ec1u n\u0103m l\u1ea1m d\u1ee5ng nh\u01b0 v\u1eady, khu\u00f4n c\u1ee7a b\u1ea1n th\u00ec kh\u00f4ng. N\u00f3 ch\u1ec9 c\u1ea7n m\u1ed9t c\u00fa \u0111\u00e1nh sai.<\/p>\n\n\n\n
\u0110i\u1ec1u n\u00e0y d\u1eabn \u0111\u1ebfn sai l\u1ea7m t\u00f4i th\u1ea5y nhi\u1ec1u h\u01a1n b\u1ea5t k\u1ef3 sai l\u1ea7m n\u00e0o kh\u00e1c.<\/p>\n\n\n\n
B\u1ea1n c\u00f3 v\u00f4 t\u00ecnh v\u01b0\u1ee3t qu\u00e1 t\u1ea3i t\u1ed1i \u0111a tr\u00ean m\u1ed7i foot khi u\u1ed1n ng\u1eafn v\u00e0 d\u00e0y kh\u00f4ng?<\/h3>\n\n\n\n
C\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t khu\u00f4n \u0111\u00f3ng d\u1ea5u th\u00f4ng s\u1ed1 nh\u01b0 \u201c80 t\u1ea5n m\u1ed7i m\u00e9t\u201d l\u00e0 c\u00f3 l\u00fd do. \u0110\u00f3 kh\u00f4ng ph\u1ea3i \u0111\u1ec3 trang tr\u00ed. \u0110\u00f3 l\u00e0 gi\u1edbi h\u1ea1n ch\u1ea3y c\u1ee7a th\u00e9p d\u1ee5ng c\u1ee5 tr\u00ean ti\u1ebft di\u1ec7n c\u1ee7a n\u00f3.<\/p>\n\n\n\n
H\u00e3y l\u00e0m ph\u00e9p t\u00ednh nhanh tr\u00ean gi\u1ea5y.<\/p>\n\n\n\n
B\u01b0\u1edbc 1: T\u00ednh \u0111\u00fang t\u1ed5ng l\u1ef1c \u00e9p \u2014 bao g\u1ed3m h\u1ec7 s\u1ed1 v\u1eadt li\u1ec7u v\u00e0 ph\u01b0\u01a1ng ph\u00e1p u\u1ed1n.<\/p>\n\n\n\n
B\u01b0\u1edbc 2: Chia cho chi\u1ec1u d\u00e0i u\u1ed1n th\u1ef1c t\u1ebf t\u00ednh b\u1eb1ng foot.<\/p>\n\n\n\n
B\u01b0\u1edbc 3: So s\u00e1nh con s\u1ed1 \u0111\u00f3 v\u1edbi th\u00f4ng s\u1ed1 t\u1ea5n tr\u00ean m\u1ed7i foot c\u1ee7a khu\u00f4n.<\/p>\n\n\n\n
Gi\u1ea3 s\u1eed ph\u00e9p t\u00ednh u\u1ed1n \u0111\u00e1y \u0111\u00e3 hi\u1ec7u ch\u1ec9nh cho ra 120 t\u1ea5n cho m\u1ed9t chi ti\u1ebft d\u00e0i 10 inch. M\u01b0\u1eddi inch l\u00e0 0,83 foot.<\/p>\n\n\n\n
120 \u00f7 0,83 \u2248 145 t\u1ea5n tr\u00ean m\u1ed7i foot.<\/p>\n\n\n\n
N\u1ebfu khu\u00f4n c\u1ee7a b\u1ea1n \u0111\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1 80 t\u1ea5n m\u1ed7i m\u00e9t, th\u00ec \u0111\u00f3 kho\u1ea3ng 24 t\u1ea5n tr\u00ean m\u1ed7i foot.<\/p>\n\n\n\n
B\u1ea1n kh\u00f4ng ch\u1ec9 v\u01b0\u1ee3t m\u1ed9t ch\u00fat. B\u1ea1n v\u01b0\u1ee3t g\u1ea5p s\u00e1u l\u1ea7n.<\/p>\n\n\n\n
\u0110\u1eebng l\u00e0 ng\u01b0\u1eddi n\u00f3i, \u201cNh\u01b0ng ch\u1ec9 c\u00f3 120 t\u1ea5n v\u00e0 \u0111\u00e2y l\u00e0 m\u00e1y \u00e9p 250 t\u1ea5n.\u201d \u0110\u00f3 l\u00e0 c\u00e1ch vai khu\u00f4n b\u1ecb m\u1ebb v\u00e0 ch\u00e0y b\u1ecb ph\u00ecnh. H\u1ec7 th\u1ed1ng th\u1ee7y l\u1ef1c c\u1ee7a m\u00e1y \u00e9p th\u1ea5y 120. Vai khu\u00f4n th\u1ea5y 145 t\u1ea5n tr\u00ean m\u1ed7i foot t\u1eadp trung t\u1ea1i hai \u0111\u01b0\u1eddng ti\u1ebfp x\u00fac.<\/p>\n\n\n\n
V\u00e0 u\u1ed1n \u0111\u00e1y d\u1ecbch t\u1ea3i ra ngo\u00e0i v\u1ec1 ph\u00eda vai khu\u00f4n. Khu\u00f4n g\u00f3c nh\u1ecdn l\u00e0m \u0111i\u1ec1u \u0111\u00f3 t\u1ec7 h\u01a1n. Di\u1ec7n t\u00edch ti\u1ebfp x\u00fac thu h\u1eb9p. \u1ee8ng su\u1ea5t t\u0103ng. Th\u00e9p d\u1ee5ng c\u1ee5 kh\u00f4ng \u0111\u01b0a ra ti\u1ebfng c\u1ea3nh b\u00e1o. N\u00f3 g\u00e3y.<\/p>\n\n\n\n
B\u1ea1n s\u1ebd nghe ti\u1ebfng n\u1ee9t nh\u01b0 s\u00fang .22 n\u1ed5 b\u00ean trong m\u00e1y.<\/p>\n\n\n\n
\u0110\u00f3 l\u00e0 sai l\u1ea7m $10,000 ch\u1ec9 trong m\u1ed9t c\u00fa \u0111\u1ea1p b\u00e0n \u0111\u1ea1p.<\/p>\n\n\n\n
C\u00e1c m\u00e1y t\u00ednh tr\u1ecdng t\u1ea3i hi\u1ec7n \u0111\u1ea1i c\u00f3 th\u1ec3 cung c\u1ea5p cho b\u1ea1n con s\u1ed1 l\u1ef1c t\u1ed5ng ch\u00ednh x\u00e1c khi b\u1ea1n nh\u1eadp \u0111\u00fang d\u1eef li\u1ec7u. Ch\u00fang kh\u00f4ng ph\u1ea3i l\u00e0 k\u1ebb th\u00f9. \u0110i\u1ec3m m\u00f9 l\u00e0 ch\u00fang xu\u1ea5t ra tr\u1ecdng t\u1ea3i h\u1ec7 th\u1ed1ng, kh\u00f4ng ph\u1ea3i m\u1eadt \u0111\u1ed9 t\u1ea3i. Ch\u00fang gi\u1ea3 \u0111\u1ecbnh r\u1eb1ng b\u1ea1n s\u1ebd t\u1ef1 ki\u1ec3m tra th\u00f4ng s\u1ed1 d\u1ee5ng c\u1ee5.<\/p>\n\n\n\n
B\u1ea1n c\u00f3 l\u00e0m v\u1eady kh\u00f4ng?<\/p>\n\n\n\n
Bi\u00ean \u0111\u1ed9 an to\u00e0n 20%: T\u1ef7 l\u1ec7 ph\u1ea7n tr\u0103m c\u1ee7a c\u00f4ng su\u1ea5t t\u1ed1i \u0111a m\u00e0 b\u1ea1n th\u1ef1c s\u1ef1 n\u00ean nh\u1eafm t\u1edbi<\/h3>\n\n\n\n
Ngay c\u1ea3 khi ph\u00e9p t\u00ednh c\u1ee7a b\u1ea1n cho th\u1ea5y b\u1ea1n n\u1eb1m trong m\u1ee9c t\u1ea5n tr\u00ean m\u1ed7i foot \u0111\u01b0\u1ee3c \u0111\u1ecbnh m\u1ee9c c\u1ee7a khu\u00f4n, \u0111\u1eebng ch\u1ea1y \u1edf m\u1ee9c 100%.<\/p>\n\n\n\n
C\u00e1c th\u00f4ng s\u1ed1 \u0111\u01b0\u1ee3c d\u1ef1a tr\u00ean s\u1ef1 c\u0103n ch\u1ec9nh l\u00fd t\u01b0\u1edfng, v\u1eadt li\u1ec7u ho\u00e0n h\u1ea3o, kh\u00f4ng t\u1ea3i l\u1ec7ch t\u00e2m, kh\u00f4ng c\u1ed9ng d\u1ed3n bi\u1ebfn d\u1ea1ng t\u1eeb b\u00e0n b\u1ecb m\u00f2n. C\u00e1c x\u01b0\u1edfng th\u1ef1c t\u1ebf kh\u00f4ng ph\u1ea3i \u0111i\u1ec1u ki\u1ec7n l\u00fd t\u01b0\u1edfng. \u0110\u1ed9 b\u1ec1n k\u00e9o c\u1ee7a v\u1eadt li\u1ec7u thay \u0111\u1ed5i theo t\u1eebng m\u1ebb nhi\u1ec7t. Ng\u01b0\u1eddi v\u1eadn h\u00e0nh th\u01b0\u1eddng xuy\u00ean \u00e9p s\u00e2u h\u01a1n \u0111\u1ec3 \u0111\u1ea1t g\u00f3c. \u0110\u1ed9 cong kh\u00f4ng ph\u1ea3i l\u00fac n\u00e0o c\u0169ng \u0111\u01b0\u1ee3c \u0111i\u1ec1u ch\u1ec9nh chu\u1ea9n.<\/p>\n\n\n\n
C\u00f4ng vi\u1ec7c ch\u00ednh x\u00e1c cao \u0111\u00f4i khi c\u1ea7n nhi\u1ec1u l\u1ef1c h\u01a1n so v\u1edbi b\u1ea3ng g\u1ee3i \u00fd \u0111\u1ec3 gi\u1eef g\u00f3c v\u00e0 ki\u1ec3m so\u00e1t \u0111\u1ed9 \u0111\u00e0n h\u1ed3i. \u0110i\u1ec1u \u0111\u00f3 c\u00f3 ngh\u0129a l\u00e0 ng\u01b0\u1eddi v\u1eadn h\u00e0nh theo b\u1ea3n n\u0103ng s\u1ebd \u00e9p s\u00e2u h\u01a1n. L\u1ef1c t\u0103ng nhanh khi g\u1ea7n \u0111\u00e1y.<\/p>\n\n\n\n
V\u00ec v\u1eady, k\u1ef7 lu\u1eadt \u1edf \u0111\u00e2y l\u00e0: nh\u1eafm kh\u00f4ng qu\u00e1 80% c\u1ee7a m\u1ee9c t\u1ea5n tr\u00ean m\u1ed7i foot c\u1ee7a khu\u00f4n v\u00e0 kh\u00f4ng qu\u00e1 80% c\u1ee7a c\u00f4ng su\u1ea5t t\u1ea3i trung t\u00e2m c\u1ee7a m\u00e1y cho v\u1ecb tr\u00ed \u0111\u00f3 tr\u00ean b\u00e0n.<\/p>\n\n\n\n
N\u1ebfu khu\u00f4n \u0111\u01b0\u1ee3c \u0111\u1ecbnh m\u1ee9c 24 t\u1ea5n m\u1ed7i foot, h\u00e3y l\u1eadp k\u1ebf ho\u1ea1ch cho 19.<\/p>\n\n\n\n
N\u1ebfu b\u1ea3ng t\u1ea3i trung t\u00e2m c\u1ee7a m\u00e1y cho bi\u1ebft t\u1ed1i \u0111a 140 t\u1ea5n \u1edf gi\u1eefa, h\u00e3y l\u1eadp k\u1ebf ho\u1ea1ch cho 110.<\/p>\n\n\n\n
Bi\u00ean \u0111\u1ed9 20% \u0111\u00f3 h\u1ea5p th\u1ee5 s\u1ef1 bi\u1ebfn \u0111\u1ed5i v\u1eadt li\u1ec7u, l\u1ed7i thi\u1ebft l\u1eadp, v\u00e0 th\u1ef1c t\u1ebf r\u1eb1ng c\u1ea7n \u00e9p kh\u00f4ng d\u1eebng l\u1ea1i ngay l\u1eadp t\u1ee9c. N\u00f3 gi\u00fap b\u1ea1n k\u00e9o d\u00e0i tu\u1ed5i th\u1ecd d\u1ee5ng c\u1ee5. N\u00f3 gi\u00fap b\u1ea1n duy tr\u00ec s\u1ef1 nh\u1ea5t qu\u00e1n. N\u00f3 gi\u1eef cho c\u1ea7n \u00e9p kh\u00f4ng tr\u1edf th\u00e0nh m\u1ed9t h\u1ed1i ti\u1ebfc \u0111i\u1ec3m-kh\u00f4ng-th\u1ec3-quay-l\u1ea1i.<\/p>\n\n\n\n
B\u1edfi v\u00ec m\u1ed9t khi c\u1ea7n \u00e9p h\u1ea1 xu\u1ed1ng, v\u1eadt l\u00fd kh\u00f4ng th\u01b0\u01a1ng l\u01b0\u1ee3ng.<\/p>\n\n\n\n
V\u00ec v\u1eady, tr\u01b0\u1edbc khi ph\u1ea7n ti\u1ebfp theo \u0111\u01b0a cho b\u1ea1n m\u1ed9t khung quy\u1ebft \u0111\u1ecbnh r\u00f5 r\u00e0ng, h\u00e3y t\u1ef1 h\u1ecfi m\u1ed9t \u0111i\u1ec1u \u0111\u01a1n gi\u1ea3n: khi b\u1ea1n nh\u00ecn v\u00e0o m\u1ed9t con s\u1ed1 tr\u1ecdng t\u1ea3i, b\u1ea1n \u0111ang th\u1ea5y l\u1ef1c t\u1ed5ng \u2014 hay l\u1ef1c tr\u00ean m\u1ed7i foot th\u1ef1c s\u1ef1 quy\u1ebft \u0111\u1ecbnh li\u1ec7u th\u00e9p s\u1ebd u\u1ed1n\u2026 hay g\u00e3y?<\/p>\n\n\n\n
Khung Quy\u1ebft \u0110\u1ecbnh Th\u1ef1c Ti\u1ec5n: T\u1eeb B\u1ea3ng \u0111\u1ebfn Thi\u1ebft L\u1eadp \u0110\u01b0\u1ee3c X\u00e1c Minh<\/h2>\n\n\n\n
B\u1ea1n mu\u1ed1n m\u1ed9t khung t\u1eebng b\u01b0\u1edbc cho bi\u1ebft, tr\u01b0\u1edbc khi b\u1ea1n ch\u1ea1m v\u00e0o b\u00e0n \u0111\u1ea1p, li\u1ec7u vi\u1ec7c u\u1ed1n c\u00f3 an to\u00e0n cho m\u00e1y v\u00e0 d\u1ee5ng c\u1ee5 hay kh\u00f4ng.<\/p>\n\n\n\n
T\u1ed1t. B\u1edfi v\u00ec hy v\u1ecdng kh\u00f4ng ph\u1ea3i l\u00e0 chi\u1ebfn l\u01b0\u1ee3c thi\u1ebft l\u1eadp.<\/p>\n\n\n\n
Ch\u00fang ta \u0111\u00e3 x\u00e1c \u0111\u1ecbnh r\u1eb1ng m\u1eadt \u0111\u1ed9 t\u1ea3i \u2014 t\u1ea5n tr\u00ean m\u1ed7i foot \u2014 l\u00e0 th\u1ee9 gi\u1ebft d\u1ee5ng c\u1ee5 v\u00e0 t\u1eeb t\u1eeb l\u00e0m gi\u1ea3m \u0111\u1ed9 ch\u00ednh x\u00e1c c\u1ee7a khung. V\u00ec v\u1eady khung n\u00e0y ph\u1ea3i bu\u1ed9c b\u1ea1n suy ngh\u0129 theo th\u1ee9 t\u1ef1 \u0111\u00f3: b\u1ea3ng \u2192 l\u1ef1c th\u1ef1c t\u1ebf \u2192 t\u1ea3i tr\u00ean m\u1ed7i foot \u2192 gi\u1edbi h\u1ea1n m\u00e1y \u2192 bi\u00ean \u0111\u1ed9 an to\u00e0n \u2192 x\u00e1c minh v\u1eadt l\u00fd. B\u1ecf s\u00f3t m\u1ed9t b\u01b0\u1edbc, v\u00e0 b\u1ea1n s\u1ebd l\u00e0 ng\u01b0\u1eddi gi\u1ea3i th\u00edch v\u1ec1 m\u1ed9t khu\u00f4n b\u1ecb g\u00e3y cho ch\u1ee7 x\u01b0\u1edfng.<\/p>\n\n\n\n
\u0110\u00e2y l\u00e0 c\u00e1ch b\u1ea1n ng\u1eebng \u0111o\u00e1n v\u00e0 b\u1eaft \u0111\u1ea7u x\u00e1c minh.<\/p>\n\n\n\n
C\u00e1ch s\u1eed d\u1ee5ng b\u1ea3ng chung nh\u01b0 m\u1ed9t b\u01b0\u1edbc ki\u1ec3m tra nhanh, kh\u00f4ng ph\u1ea3i th\u00f4ng s\u1ed1 cu\u1ed1i c\u00f9ng<\/h3>\n\n\n\n
B\u1ea3ng kh\u00f4ng ph\u1ea3i l\u00e0 c\u00e2u tr\u1ea3 l\u1eddi. N\u00f3 l\u00e0 m\u00e1y ph\u00e1t hi\u1ec7n n\u00f3i d\u1ed1i.<\/p>\n\n\n\n
B\u01b0\u1edbc m\u1ed9t: l\u1ea5y tr\u1ecdng t\u1ea3i chung t\u1eeb b\u1ea3ng cho \u0111\u1ed9 d\u00e0y v\u00e0 k\u00edch m\u1edf V c\u1ee7a b\u1ea1n. \u0110i\u1ec1u \u0111\u00f3 cho b\u1ea1n m\u1ed9t m\u1ee9c c\u01a1 b\u1ea3n t\u00ednh b\u1eb1ng t\u1ea5n tr\u00ean m\u1ed7i foot cho th\u00e9p m\u1ec1m, u\u1ed1n kh\u00f4ng ch\u1ea1m, \u0111i\u1ec1u ki\u1ec7n l\u00fd t\u01b0\u1edfng.<\/p>\n\n\n\n
B\u00e2y gi\u1edd h\u00e3y l\u00e0m m\u1ed9t so s\u00e1nh \u0111\u01a1n gi\u1ea3n.<\/p>\n\n\n\n
Con s\u1ed1 \u0111\u00f3 c\u00f3 n\u1eb1m c\u00f9ng \u201ckhu ph\u1ed1\u201d v\u1edbi c\u00f4ng su\u1ea5t ph\u00e2n ph\u1ed1i c\u1ee7a m\u00e1y b\u1ea1n kh\u00f4ng?<\/p>\n\n\n\n
N\u1ebfu bi\u1ec3u \u0111\u1ed3 ghi 12 t\u1ea5n m\u1ed7i foot v\u00e0 b\u1ea1n d\u1ef1 \u0111\u1ecbnh u\u1ed1n 10 foot, th\u00ec t\u1ed5ng c\u1ed9ng l\u00e0 120 t\u1ea5n. Tr\u00ean m\u1ed9t m\u00e1y 130 t\u1ea5n, \u0111i\u1ec1u \u0111\u00f3 \u0111\u00e3 g\u1ea7n h\u1ebft s\u1ee9c tr\u01b0\u1edbc khi ch\u00fang ta \u0111i\u1ec1u ch\u1ec9nh cho v\u1eadt li\u1ec7u ho\u1eb7c ph\u01b0\u01a1ng ph\u00e1p th\u1ef1c t\u1ebf. Bi\u1ec3u \u0111\u1ed3 v\u1eeba cho b\u1ea1n bi\u1ebft c\u00f4ng vi\u1ec7c n\u00e0y \u0111ang g\u1ea7n s\u00e1t gi\u1edbi h\u1ea1n.<\/p>\n\n\n\n
Nh\u01b0ng \u0111\u00e2y l\u00e0 ch\u1ed7 c\u00e1c v\u1eadn h\u00e0nh vi\u00ean tr\u1edf n\u00ean c\u1ea9u th\u1ea3. H\u1ecd d\u1eebng l\u1ea1i \u1edf \u0111\u00f3.<\/p>\n\n\n\n
Bi\u1ec3u \u0111\u1ed3 gi\u1ea3 \u0111\u1ecbnh \u0111\u1ed9 d\u00e0y danh ngh\u0129a. H\u1ea7u h\u1ebft t\u1ea5m th\u00e9p \u0111\u1ec1u d\u00e0y h\u01a1n. D\u00e0y h\u01a1n t\u1eeb n\u0103m \u0111\u1ebfn m\u01b0\u1eddi l\u0103m ph\u1ea7n tr\u0103m l\u00e0 ph\u1ed5 bi\u1ebfn. N\u1ebfu b\u1ea1n kh\u00f4ng \u0111o \u0111\u1ed9 d\u00e0y th\u1ef1c t\u1ebf tr\u01b0\u1edbc khi t\u00ednh to\u00e1n, b\u1ea1n \u0111\u00e3 \u0111\u01b0a l\u1ed7i v\u00e0o ngay tr\u01b0\u1edbc khi ph\u00e9p t\u00ednh b\u1eaft \u0111\u1ea7u. \u0110\u1eebng l\u00e0 ng\u01b0\u1eddi tin nh\u00e3n tr\u00ean gi\u00e1 h\u01a1n l\u00e0 c\u00e1i th\u01b0\u1edbc c\u1eb7p trong tay.<\/p>\n\n\n\n
V\u00ec v\u1eady, bi\u1ec3u \u0111\u1ed3 ch\u1ec9 tr\u1ea3 l\u1eddi m\u1ed9t c\u00e2u h\u1ecfi duy nh\u1ea5t: \u201cC\u00f4ng vi\u1ec7c n\u00e0y c\u00f3 r\u00f5 r\u00e0ng l\u00e0 b\u1ea5t kh\u1ea3 thi kh\u00f4ng?\u201d<\/p>\n\n\n\n
N\u1ebfu n\u00f3 v\u01b0\u1ee3t qua b\u00e0i ki\u1ec3m tra nhanh \u0111\u00f3, th\u00ec b\u1ea1n th\u1ef1c s\u1ef1 c\u1ea7n x\u00e1c minh g\u00ec ti\u1ebfp theo?<\/p>\n\n\n\n
M\u1ed9t danh s\u00e1ch ki\u1ec3m tra l\u1eb7p l\u1ea1i \u0111\u1ec3 x\u00e1c nh\u1eadn m\u00e1y u\u1ed1n v\u00e0 d\u1ee5ng c\u1ee5 c\u1ee7a b\u1ea1n c\u00f3 th\u1ec3 x\u1eed l\u00fd c\u00f4ng vi\u1ec7c m\u1ed9t c\u00e1ch an to\u00e0n<\/h3>\n\n\n\n
\u0110\u00e2y l\u00e0 ph\u1ea7n k\u1ef7 lu\u1eadt. C\u00f9ng th\u1ee9 t\u1ef1, m\u1ecdi c\u00f4ng vi\u1ec7c.<\/p>\n\n\n\n
1. \u0110o th\u1ef1c t\u1ebf.<\/strong> \u0110\u1ed9 d\u00e0y th\u1ef1c t\u1ebf. Chi\u1ec1u d\u00e0i u\u1ed1n th\u1ef1c t\u1ebf. Lo\u1ea1i v\u1eadt li\u1ec7u th\u1ef1c t\u1ebf. N\u1ebfu b\u1ea1n chuy\u1ec3n t\u1eeb A36 sang 304 m\u00e0 kh\u00f4ng thay \u0111\u1ed5i h\u1ec7 s\u1ed1 nh\u00e2n, b\u1ea1n kh\u00f4ng t\u00ednh to\u00e1n \u2014 b\u1ea1n \u0111\u00e3 gi\u1ea3 \u0111\u1ecbnh.<\/p>\n\n\n\n2. T\u00ednh to\u00e1n t\u1ed5ng l\u1ef1c n\u00e9n \u0111\u00e3 \u0111i\u1ec1u ch\u1ec9nh.<\/strong> T\u1ea5n c\u01a1 b\u1ea3n m\u1ed7i foot \u00d7 h\u1ec7 s\u1ed1 v\u1eadt li\u1ec7u \u00d7 h\u1ec7 s\u1ed1 ph\u01b0\u01a1ng ph\u00e1p \u00d7 chi\u1ec1u d\u00e0i u\u1ed1n. U\u1ed1n kh\u00f4ng ch\u1ea1m l\u00e0 c\u01a1 s\u1edf c\u1ee7a b\u1ea1n. U\u1ed1n \u0111\u00e1y ho\u1eb7c d\u1eadp \u0111\u1ed3ng? Nh\u00e2n t\u01b0\u01a1ng \u1ee9ng. C\u00f4ng vi\u1ec7c ch\u00ednh x\u00e1c cao \u0111\u00f4i khi c\u1ea7n nhi\u1ec1u l\u1ef1c h\u01a1n bi\u1ec3u \u0111\u1ed3 g\u1ee3i \u00fd \u0111\u1ec3 gi\u1eef g\u00f3c v\u00e0 ki\u1ec3m so\u00e1t \u0111\u1ed9 \u0111\u00e0n h\u1ed3i \u2014 v\u00e0 l\u1ef1c b\u1ed5 sung \u0111\u00f3 ph\u1ea3i l\u00e0 c\u00f3 ch\u1ee7 \u00fd, kh\u00f4ng ph\u1ea3i ng\u1eabu nhi\u00ean.<\/p>\n\n\n\nB\u00e2y gi\u1edd b\u1ea1n c\u00f3 t\u1ed5ng l\u1ef1c n\u00e9n c\u1ee7a h\u1ec7 th\u1ed1ng.<\/p>\n\n\n\n
3. Chuy\u1ec3n \u0111\u1ed5i sang m\u1eadt \u0111\u1ed9 t\u1ea3i.<\/strong> T\u1ed5ng t\u1ea5n \u00f7 chi\u1ec1u d\u00e0i u\u1ed1n th\u1ef1c t\u1ebf (t\u00ednh b\u1eb1ng foot). \u0110\u00f3 l\u00e0 con s\u1ed1 m\u00e0 khu\u00f4n c\u1ea3m nh\u1eadn. Kh\u00f4ng ph\u1ea3i m\u00e1y. M\u00e0 l\u00e0 khu\u00f4n.<\/p>\n\n\n\nSo s\u00e1nh v\u1edbi s\u1ed1 t\u1ea5n m\u1ed7i foot \u0111\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1 c\u1ee7a khu\u00f4n. Gi\u1eef \u1edf m\u1ee9c ho\u1eb7c d\u01b0\u1edbi 80% c\u1ee7a m\u1ee9c \u0111\u00e1nh gi\u00e1 \u0111\u00f3. Kho\u1ea3ng c\u00e1ch an to\u00e0n n\u00e0y kh\u00f4ng ph\u1ea3i l\u00e0 h\u00e8n nh\u00e1t. N\u00f3 l\u00e0 b\u1ea3o hi\u1ec3m ch\u1ed1ng l\u1ea1i s\u1ef1 bi\u1ebfn thi\u00ean v\u1ec1 \u0111\u1ed9 b\u1ec1n k\u00e9o, \u0111\u1ed9 s\u00e2u th\u00e2m nh\u1eadp v\u00e0 l\u1ed7i c\u0103n ch\u1ec9nh.<\/p>\n\n\n\n
4. Ki\u1ec3m tra kh\u1ea3 n\u0103ng t\u1ea3i tr\u1ecdng t\u1eadp trung c\u1ee7a m\u00e1y.<\/strong> Kh\u00f4ng ph\u1ea3i t\u1ea5n \u0111\u1ecbnh m\u1ee9c. Bi\u1ec3u \u0111\u1ed3 t\u1ea3i tr\u1ecdng t\u1eadp trung. N\u1ebfu t\u1ed5ng l\u1ef1c n\u00e9n b\u1ea1n t\u00ednh v\u01b0\u1ee3t qu\u00e1 80% t\u1ea3i tr\u1ecdng t\u1eadp trung cho ph\u00e9p \u0111\u1ed1i v\u1edbi kho\u1ea3ng u\u1ed1n \u0111\u00f3, b\u1ea1n \u0111ang u\u1ed1n trong v\u00f9ng \u0111\u1ecf ngay c\u1ea3 khi b\u1ea3ng t\u00ean m\u00e1y n\u00f3i b\u1ea1n \u1ed5n.<\/p>\n\n\n\n\u0110\u1ecbnh m\u1ee9c m\u00e1y l\u00e0 tr\u1ea7n nh\u00e0. T\u1ea3i tr\u1ecdng t\u1eadp trung l\u00e0 tr\u1ecdng l\u1ef1c.<\/p>\n\n\n\n
5. X\u00e1c minh r\u1eb1ng ch\u00ednh m\u00e1y kh\u00f4ng l\u1eeba b\u1ea1n.<\/strong> \u0110i\u1ec1u anh ta kh\u00f4ng bao gi\u1edd ki\u1ec3m tra l\u00e0 m\u1eb7t b\u00e0n.<\/p>\n\n\n\n\u0110\u1ed9 l\u1ec7ch b\u00e0n 0,06 mm tr\u00ean m\u1ed9t kho\u1ea3ng d\u00e0i c\u00f3 th\u1ec3 chuy\u1ec3n th\u00e0nh s\u1ef1 thay \u0111\u1ed5i g\u00f3c \u0111o \u0111\u01b0\u1ee3c. N\u1ebfu b\u00e0n \u0111\u00e3 b\u1ecb bi\u1ebfn d\u1ea1ng do nhi\u1ec1u n\u0103m s\u1eed d\u1ee5ng qu\u00e1 m\u1ee9c, c\u00e1c ph\u00e9p t\u00ednh t\u1ea3i tr\u1ecdng tuy\u1ec7t \u0111\u1eb9p c\u1ee7a b\u1ea1n s\u1ebd kh\u00f4ng gi\u1eef \u0111\u01b0\u1ee3c g\u00f3c tr\u00ean to\u00e0n b\u1ed9 chi ti\u1ebft. \u0110\u1ed9 l\u1eb7p l\u1ea1i c\u1ee7a th\u01b0\u1edbc \u0111o sau tr\u00f4i qu\u00e1 v\u00e0i ph\u1ea7n tr\u0103m milim\u00e9t? \u0110\u01b0\u1eddng u\u1ed1n c\u1ee7a b\u1ea1n s\u1ebd d\u1ecbch chuy\u1ec3n, c\u00e1nh tay \u0111\u00f2n hi\u1ec7u d\u1ee5ng thay \u0111\u1ed5i, v\u00e0 l\u1ef1c t\u00ednh to\u00e1n c\u1ee7a b\u1ea1n s\u1ebd kh\u00f4ng c\u00f2n kh\u1edbp v\u1edbi th\u1ef1c t\u1ebf.<\/p>\n\n\n\n
M\u1ed9t bi\u1ebfn s\u1ed1 m\u00e1y sai s\u1ebd l\u00e0m v\u00f4 hi\u1ec7u to\u00e0n b\u1ed9 ph\u00e9p t\u00ednh.<\/p>\n\n\n\n
B\u1ea1n th\u1ea5y danh s\u00e1ch ki\u1ec3m n\u00e0y l\u00e0m g\u00ec kh\u00f4ng? N\u00f3 bi\u1ebfn t\u1ea3i tr\u1ecdng t\u1eeb m\u1ed9t con s\u1ed1 \u0111\u01a1n th\u00e0nh m\u1ed9t chu\u1ed7i c\u00e1c \u0111i\u1ec1u ki\u1ec7n ph\u1ee5 thu\u1ed9c. G\u00e3y m\u1ed9t m\u1eaft x\u00edch, k\u1ebft qu\u1ea3 s\u1ebd thay \u0111\u1ed5i.<\/p>\n\n\n\n
Nh\u01b0ng t\u1ea5t c\u1ea3 v\u1eabn ph\u1ee5 thu\u1ed9c v\u00e0o m\u1ed9t con s\u1ed1 m\u00e0 b\u1ea1n nh\u1ea5t \u0111\u1ecbnh ph\u1ea3i bi\u1ebft.<\/p>\n\n\n\nB\u01b0\u1edbc<\/th> M\u00f4 t\u1ea3<\/th><\/tr><\/thead> 1. \u0110o th\u1ef1c t\u1ebf.<\/strong> <\/td>\u0110\u1ed9 d\u00e0y th\u1ef1c t\u1ebf. Chi\u1ec1u d\u00e0i u\u1ed1n th\u1ef1c t\u1ebf. Lo\u1ea1i v\u1eadt li\u1ec7u th\u1ef1c t\u1ebf. N\u1ebfu b\u1ea1n chuy\u1ec3n t\u1eeb A36 sang 304 m\u00e0 kh\u00f4ng thay \u0111\u1ed5i h\u1ec7 s\u1ed1 nh\u00e2n, b\u1ea1n kh\u00f4ng t\u00ednh to\u00e1n \u2014 b\u1ea1n \u0111\u00e3 gi\u1ea3 \u0111\u1ecbnh.<\/td><\/tr> 2. T\u00ednh to\u00e1n t\u1ed5ng t\u1ea3i tr\u1ecdng \u0111\u00e3 hi\u1ec7u ch\u1ec9nh.<\/strong> <\/td>S\u1ed1 t\u1ea5n c\u01a1 b\u1ea3n tr\u00ean m\u1ed7i foot \u00d7 h\u1ec7 s\u1ed1 v\u1eadt li\u1ec7u \u00d7 h\u1ec7 s\u1ed1 ph\u01b0\u01a1ng ph\u00e1p \u00d7 chi\u1ec1u d\u00e0i u\u1ed1n. U\u1ed1n kh\u00f4ng kh\u00ed l\u00e0 c\u01a1 s\u1edf c\u1ee7a b\u1ea1n. U\u1ed1n \u0111\u00e1y ho\u1eb7c d\u1eadp \u0111\u1ed3ng? Nh\u00e2n t\u01b0\u01a1ng \u1ee9ng. C\u00f4ng vi\u1ec7c ch\u00ednh x\u00e1c cao \u0111\u00f4i khi c\u1ea7n nhi\u1ec1u l\u1ef1c h\u01a1n bi\u1ec3u \u0111\u1ed3 g\u1ee3i \u00fd \u0111\u1ec3 gi\u1eef g\u00f3c v\u00e0 ki\u1ec3m so\u00e1t \u0111\u1ed9 \u0111\u00e0n h\u1ed3i \u2014 v\u00e0 l\u1ef1c b\u1ed5 sung \u0111\u00f3 ph\u1ea3i l\u00e0 ch\u1ee7 \u00fd, kh\u00f4ng ph\u1ea3i ng\u1eabu nhi\u00ean. B\u00e2y gi\u1edd b\u1ea1n c\u00f3 t\u1ed5ng t\u1ea3i tr\u1ecdng c\u1ee7a h\u1ec7 th\u1ed1ng.<\/td><\/tr> 3. Chuy\u1ec3n \u0111\u1ed5i sang m\u1eadt \u0111\u1ed9 t\u1ea3i.<\/strong> <\/td>T\u1ed5ng s\u1ed1 t\u1ea5n \u00f7 chi\u1ec1u d\u00e0i u\u1ed1n th\u1ef1c t\u1ebf (t\u00ednh b\u1eb1ng foot). \u0110\u00f3 l\u00e0 con s\u1ed1 m\u00e0 khu\u00f4n c\u1ea3m nh\u1eadn. Kh\u00f4ng ph\u1ea3i m\u00e1y. L\u00e0 khu\u00f4n. So s\u00e1nh v\u1edbi s\u1ed1 t\u1ea5n tr\u00ean m\u1ed7i foot \u0111\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1 c\u1ee7a khu\u00f4n. Gi\u1eef \u1edf m\u1ee9c ho\u1eb7c d\u01b0\u1edbi 80% c\u1ee7a m\u1ee9c \u0111\u00e1nh gi\u00e1 \u0111\u00f3. Kho\u1ea3ng c\u00e1ch an to\u00e0n n\u00e0y kh\u00f4ng ph\u1ea3i l\u00e0 h\u00e8n nh\u00e1t. N\u00f3 l\u00e0 b\u1ea3o hi\u1ec3m ch\u1ed1ng l\u1ea1i s\u1ef1 thay \u0111\u1ed5i \u0111\u1ed9 b\u1ec1n k\u00e9o, \u0111\u1ed9 s\u00e2u th\u00e2m nh\u1eadp v\u00e0 sai l\u1ec7ch c\u0103n ch\u1ec9nh.<\/td><\/tr> 4. Ki\u1ec3m tra kh\u1ea3 n\u0103ng ch\u1ecbu t\u1ea3i trung t\u00e2m c\u1ee7a m\u00e1y.<\/strong> <\/td>Kh\u00f4ng ph\u1ea3i t\u1ea3i tr\u1ecdng \u0111\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1. L\u00e0 bi\u1ec3u \u0111\u1ed3 t\u1ea3i trung t\u00e2m. N\u1ebfu t\u1ed5ng t\u1ea3i tr\u1ecdng t\u00ednh to\u00e1n c\u1ee7a b\u1ea1n v\u01b0\u1ee3t qu\u00e1 80% c\u1ee7a t\u1ea3i trung t\u00e2m cho ph\u00e9p tr\u00ean kho\u1ea3ng \u0111\u00f3, b\u1ea1n \u0111ang u\u1ed1n trong v\u00f9ng \u0111\u1ecf ngay c\u1ea3 khi b\u1ea3ng t\u00ean n\u00f3i r\u1eb1ng b\u1ea1n \u1ed5n. \u0110\u00e1nh gi\u00e1 m\u00e1y l\u00e0 tr\u1ea7n. T\u1ea3i trung t\u00e2m l\u00e0 tr\u1ecdng l\u1ef1c.<\/td><\/tr> 5. X\u00e1c minh r\u1eb1ng ch\u00ednh m\u00e1y kh\u00f4ng l\u1eeba b\u1ea1n.<\/strong> <\/td>\u0110i\u1ec1u m\u00e0 anh \u1ea5y kh\u00f4ng bao gi\u1edd ki\u1ec3m tra l\u00e0 b\u00e0n. \u0110\u1ed9 l\u1ec7ch b\u00e0n 0,06 mm tr\u00ean m\u1ed9t kho\u1ea3ng d\u00e0i c\u00f3 th\u1ec3 chuy\u1ec3n th\u00e0nh s\u1ef1 thay \u0111\u1ed5i g\u00f3c \u0111o \u0111\u01b0\u1ee3c. N\u1ebfu b\u00e0n \u0111\u00e3 b\u1ecb bi\u1ebfn d\u1ea1ng do nhi\u1ec1u n\u0103m s\u1eed d\u1ee5ng qu\u00e1 m\u1ee9c, c\u00e1c ph\u00e9p t\u00ednh t\u1ea3i tr\u1ecdng tuy\u1ec7t \u0111\u1eb9p c\u1ee7a b\u1ea1n s\u1ebd kh\u00f4ng gi\u1eef \u0111\u01b0\u1ee3c g\u00f3c tr\u00ean to\u00e0n b\u1ed9 chi ti\u1ebft. \u0110\u1ed9 l\u1eb7p l\u1ea1i c\u1ee7a th\u01b0\u1edbc \u0111o sau tr\u00f4i qu\u00e1 v\u00e0i ph\u1ea7n tr\u0103m milim\u00e9t? \u0110\u01b0\u1eddng u\u1ed1n c\u1ee7a b\u1ea1n s\u1ebd d\u1ecbch chuy\u1ec3n, c\u00e1nh tay \u0111\u00f2n hi\u1ec7u d\u1ee5ng thay \u0111\u1ed5i, v\u00e0 l\u1ef1c t\u00ednh to\u00e1n c\u1ee7a b\u1ea1n s\u1ebd kh\u00f4ng c\u00f2n kh\u1edbp v\u1edbi th\u1ef1c t\u1ebf. M\u1ed9t bi\u1ebfn s\u1ed1 m\u00e1y sai s\u1ebd l\u00e0m v\u00f4 hi\u1ec7u to\u00e0n b\u1ed9 ph\u00e9p t\u00ednh.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\nCon s\u1ed1 t\u00ednh to\u00e1n duy nh\u1ea5t m\u00e0 b\u1ea1n nh\u1ea5t \u0111\u1ecbnh ph\u1ea3i bi\u1ebft tr\u01b0\u1edbc khi c\u1ea7n \u0111i xu\u1ed1ng<\/h3>\n\n\n\n
B\u1ea1n ph\u1ea3i bi\u1ebft s\u1ed1 t\u1ea5n tr\u00ean m\u1ed7i foot \u0111\u00e3 \u0111\u01b0\u1ee3c x\u00e1c minh t\u1ea1i m\u1ee9c an to\u00e0n d\u1ef1 ki\u1ebfn<\/strong>.<\/p>\n\n\n\nKh\u00f4ng ph\u1ea3i s\u1ed1 t\u1ea5n tr\u00ean m\u1ed7i foot t\u1eeb bi\u1ec3u \u0111\u1ed3. Kh\u00f4ng ph\u1ea3i s\u1ed1 t\u1ea5n tr\u00ean m\u1ed7i foot t\u00ednh th\u00f4. \u0110\u00e3 \u0111\u01b0\u1ee3c x\u00e1c minh, hi\u1ec7u ch\u1ec9nh v\u00e0 \u0111i\u1ec1u ch\u1ec9nh theo m\u1ee9c an to\u00e0n.<\/p>\n\n\n\n
\u0110\u00e2y l\u00e0 phi\u00ean b\u1ea3n ghi nhanh:<\/p>\n\n\n\n
\n- T\u1ed5ng s\u1ed1 t\u1ea5n \u0111\u00e3 hi\u1ec7u ch\u1ec9nh (bao g\u1ed3m v\u1eadt li\u1ec7u \u00d7 ph\u01b0\u01a1ng ph\u00e1p).<\/li>\n\n\n\n
- Chia cho chi\u1ec1u d\u00e0i u\u1ed1n th\u1ef1c t\u1ebf t\u00ednh b\u1eb1ng feet.<\/li>\n\n\n\n
- Nh\u00e2n v\u1edbi 1,25 \u0111\u1ec3 xem 100% tr\u00f4ng nh\u01b0 th\u1ebf n\u00e0o \u2014 sau \u0111\u00f3 thi\u1ebft k\u1ebf \u1edf m\u1ee9c 0,8 c\u1ee7a gi\u1edbi h\u1ea1n \u0111\u1ecbnh m\u1ee9c.<\/li>\n<\/ol>\n\n\n\n
N\u1ebfu khu\u00f4n c\u1ee7a b\u1ea1n \u0111\u01b0\u1ee3c \u0111\u1ecbnh m\u1ee9c 24 t\u1ea5n m\u1ed7i foot, tr\u1ea7n l\u00e0m vi\u1ec7c c\u1ee7a b\u1ea1n kho\u1ea3ng 19. N\u1ebfu ph\u00e9p t\u00ednh c\u1ee7a b\u1ea1n cho ra 21, b\u1ea1n kh\u00f4ng ph\u1ea3i l\u00e0 \u201ch\u01a1i v\u01b0\u1ee3t\u201d. B\u1ea1n \u0111ang v\u1eadn h\u00e0nh v\u01b0\u1ee3t qu\u00e1 v\u00f9ng \u0111\u00e0n h\u1ed3i tho\u1ea3i m\u00e1i c\u1ee7a th\u00e9p c\u00f4ng c\u1ee5.<\/p>\n\n\n\n
C\u1eef ch\u00e0y h\u1ea1 xu\u1ed1ng.<\/p>\n\n\n\n
Th\u00e9p kh\u00f4ng quan t\u00e2m r\u1eb1ng b\u1ea1n \u0111\u00e3 g\u1ea7n \u0111\u1ea1t.<\/p>\n\n\n\n
V\u00e0 \u0111\u00e2y l\u00e0 ph\u1ea7n kh\u00f4ng r\u00f5 r\u00e0ng m\u00e0 b\u1ea1n c\u1ea7n ghi nh\u1edb: b\u1ea3ng bi\u1ec3u tonnage kh\u00f4ng nguy hi\u1ec3m v\u00ec n\u00f3 sai. N\u00f3 nguy hi\u1ec3m v\u00ec n\u00f3 khi\u1ebfn b\u1ea1n ng\u1eebng suy ngh\u0129 qu\u00e1 s\u1edbm. N\u00f3 c\u00f3 v\u1ebb ch\u00ednh x\u00e1c, n\u00ean b\u1ea1n coi n\u00f3 nh\u01b0 m\u1ed9t th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt. Th\u1ef1c t\u1ebf, \u0111\u00f3 l\u00e0 m\u1ed9t ph\u1ecfng \u0111o\u00e1n l\u1ecbch s\u1ef1 d\u1ef1a tr\u00ean nh\u1eefng gi\u1ea3 \u0111\u1ecbnh m\u00e0 x\u01b0\u1edfng c\u1ee7a b\u1ea1n vi ph\u1ea1m m\u1ed7i ng\u00e0y.<\/p>\n\n\n\n
Khung ph\u01b0\u01a1ng ph\u00e1p bu\u1ed9c b\u1ea1n ph\u1ea3i chuy\u1ec3n ph\u1ecfng \u0111o\u00e1n \u0111\u00f3 th\u00e0nh m\u1eadt \u0111\u1ed9 t\u1ea3i \u0111\u00e3 \u0111\u01b0\u1ee3c x\u00e1c minh trong gi\u1edbi h\u1ea1n m\u00e1y \u0111\u00e3 bi\u1ebft, v\u1edbi m\u1ed9t v\u00f9ng \u0111\u1ec7m h\u1ea5p th\u1ee5 th\u1ef1c t\u1ebf.<\/p>\n\n\n\n
Tr\u01b0\u1edbc khi c\u1ea7n \u00e9p \u0111i xu\u1ed1ng, b\u1ea1n c\u1ea7n bi\u1ebft r\u00f5 ba \u0111i\u1ec1u: T\u1ed5ng tonnage \u0111\u00e3 \u0111\u01b0\u1ee3c hi\u1ec7u ch\u1ec9nh. S\u1ed1 t\u1ea5n m\u1ed7i foot \u0111\u00e3 \u0111\u01b0\u1ee3c x\u00e1c minh \u1edf m\u1ee9c 80% ho\u1eb7c th\u1ea5p h\u01a1n so v\u1edbi \u0111\u1ecbnh m\u1ee9c d\u1ee5ng c\u1ee5. T\u1ea3i tr\u1ecdng trung t\u00e2m cho ph\u00e9p c\u1ee7a m\u00e1y \u0111\u1ed1i v\u1edbi kho\u1ea3ng c\u00e1ch \u0111\u00f3.<\/p>\n\n\n\n
N\u1ebfu kh\u00f4ng, b\u1ea1n kh\u00f4ng ph\u1ea3i \u0111ang u\u1ed1n kim lo\u1ea1i.<\/p>\n\n\n\n
B\u1ea1n \u0111ang \u0111\u00e1nh c\u01b0\u1ee3c v\u1edbi th\u00e9p \u0111\u00e3 t\u00f4i c\u1ee9ng v\u00e0 m\u1ed9t khung m\u00e1y ghi nh\u1edb m\u1ecdi sai l\u1ea7m.<\/p>","protected":false},"excerpt":{"rendered":"
T\u00f4i \u0111\u00e3 xem m\u1ed9t ng\u01b0\u1eddi thi\u1ebft l\u1eadp \u0111\u1ec3 u\u1ed1n th\u00e9p cacbon th\u1ea5p 10\u2011gauge, chi\u1ec1u d\u00e0i u\u1ed1n 8 feet, ch\u1ecdn khu\u00f4n V th\u1eb3ng t\u1eeb b\u1ea3ng h\u01b0\u1edbng d\u1eabn treo tr\u00ean t\u01b0\u1eddng. Anh ta \u0111i\u1ec1u ch\u1ec9nh l\u1ef1c \u00e9p \u0111\u00fang theo th\u00f4ng s\u1ed1 tr\u00ean b\u1ea3ng. Tr\u1ee5c \u00e9p h\u1ea1 xu\u1ed1ng. Ph\u1ea7n \u0111\u1ea7u ti\u00ean tr\u00f4ng \u1ed5n \u1edf b\u00ean tr\u00e1i, h\u01a1i m\u1edf h\u01a1n \u1edf b\u00ean ph\u1ea3i. Anh ta \u0111\u1ed5 l\u1ed7i cho v\u1eadt li\u1ec7u. Th\u00eam m\u1ed9t ch\u00fat l\u1ef1c n\u1eefa. \u0110i\u1ec1u m\u00e0 anh ta [\u2026]<\/p>","protected":false},"author":3,"featured_media":836,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_breakdance_hide_in_design_set":false,"_breakdance_tags":"","footnotes":""},"categories":[1],"tags":[],"class_list":["post-832","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/cn-hawe.com\/vi\/wp-json\/wp\/v2\/posts\/832","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/cn-hawe.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/cn-hawe.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/cn-hawe.com\/vi\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/cn-hawe.com\/vi\/wp-json\/wp\/v2\/comments?post=832"}],"version-history":[{"count":2,"href":"https:\/\/cn-hawe.com\/vi\/wp-json\/wp\/v2\/posts\/832\/revisions"}],"predecessor-version":[{"id":1098,"href":"https:\/\/cn-hawe.com\/vi\/wp-json\/wp\/v2\/posts\/832\/revisions\/1098"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cn-hawe.com\/vi\/wp-json\/wp\/v2\/media\/836"}],"wp:attachment":[{"href":"https:\/\/cn-hawe.com\/vi\/wp-json\/wp\/v2\/media?parent=832"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cn-hawe.com\/vi\/wp-json\/wp\/v2\/categories?post=832"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cn-hawe.com\/vi\/wp-json\/wp\/v2\/tags?post=832"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
<\/figure>\n\n\n\nH\u00e3y l\u00e0m to\u00e1n nhanh tr\u00ean gi\u1ea5y. Ba b\u01b0\u1edbc.<\/p>\n\n\n\n
- \n
- Bi\u1ec3u \u0111\u1ed3 n\u00f3i c\u1ea7n 50 t\u1ea5n cho thi\u1ebft l\u1eadp c\u1ee7a b\u1ea1n.<\/li>\n\n\n\n
- V\u1eadt li\u1ec7u c\u1ee7a b\u1ea1n m\u1ea1nh h\u01a1n \u201cti\u00eau chu\u1ea9n\u201d 10%.\u201d<\/li>\n\n\n\n
- B\u1ea1n u\u1ed1n ch\u1ea1m \u0111\u00e1y thay v\u00ec u\u1ed1n kh\u00f4ng kh\u00ed \u2014 \u0111i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 t\u0103ng g\u1ea5p \u0111\u00f4i ho\u1eb7c g\u1ea5p ba nhu c\u1ea7u l\u1ef1c.<\/li>\n<\/ol>\n\n\n\n
B\u1ea1n kh\u00f4ng c\u00f2n \u1edf m\u1ee9c 50 t\u1ea5n n\u1eefa. B\u1ea1n c\u00f3 th\u1ec3 \u0111ang ch\u1ea1m ng\u01b0\u1ee1ng 90 ho\u1eb7c 120 m\u00e0 kh\u00f4ng nh\u1eadn ra.<\/p>\n\n\n\n
\u0110\u00f3 l\u00e0 c\u00e1ch \u0111\u1ea7u ch\u00e0y b\u1ecb m\u1ebb. \u0110\u00f3 l\u00e0 c\u00e1ch vai khu\u00f4n b\u1ecb n\u1ee9t v\u1edbi \u00e2m thanh b\u1ea1n c\u1ea3m th\u1ea5y t\u1eadn trong r\u0103ng. \u0110\u00f3 l\u00e0 c\u00e1ch m\u1ed9t m\u00e1y \u00e9p 100 t\u1ea5n s\u1ed1ng c\u1ea3 \u0111\u1eddi gi\u1ea3 v\u1edd l\u00e0 m\u00e1y 140 t\u1ea5n cho \u0111\u1ebfn khi c\u00f3 th\u1ee9 g\u00ec \u0111\u00f3 g\u00e3y.<\/p>\n\n\n\n
Ho\u1eb7c l\u1eadt ng\u01b0\u1ee3c t\u00ecnh hu\u1ed1ng. C\u00f4ng vi\u1ec7c \u0111\u1ed9 ch\u00ednh x\u00e1c cao \u0111\u00f4i khi c\u1ea7n nhi\u1ec1u l\u1ef1c h\u01a1n bi\u1ec3u \u0111\u1ed3 g\u1ee3i \u00fd \u0111\u1ec3 gi\u1eef g\u00f3c v\u00e0 ki\u1ec3m so\u00e1t \u0111\u1ed9 \u0111\u00e0n h\u1ed3i. V\u1eadn h\u00e0nh \u201ctheo s\u00e1ch\u201d v\u00e0 b\u1ea1n s\u1ebd c\u00f3 c\u00e1c chi ti\u1ebft kh\u00f4ng \u0111\u1ed3ng nh\u1ea5t, th\u1ee3 v\u1eadn h\u00e0nh li\u00ean t\u1ee5c ch\u1ec9nh, \u0111u\u1ed5i theo nh\u1eefng \u201cb\u00f3ng ma\u201d v\u1ed1n kh\u00f4ng ph\u1ea3i b\u00f3ng ma.<\/p>\n\n\n\n
\u201cG\u1ea7n \u0111\u00fang\u201d ch\u1ec9 hi\u1ec7u qu\u1ea3 khi chi ph\u00ed c\u1ee7a vi\u1ec7c sai l\u00e0 nh\u1ecf.<\/p>\n\n\n\n
Khi tr\u1ee5c \u00e9p \u0111ang h\u1ea1 xu\u1ed1ng v\u00e0 th\u00e9p s\u1eafp b\u1ecb bi\u1ebfn d\u1ea1ng, b\u1ea1n \u0111\u00e3 v\u01b0\u1ee3t qua \u0111i\u1ec3m tranh lu\u1eadn. V\u1eady c\u00e2u h\u1ecfi th\u1ef1c s\u1ef1 kh\u00f4ng ph\u1ea3i l\u00e0 li\u1ec7u bi\u1ec3u \u0111\u1ed3 c\u00f3 h\u1eefu \u00edch hay kh\u00f4ng.<\/p>\n\n\n\n
M\u00e0 l\u00e0: bi\u1ebfn s\u1ed1 n\u00e0o c\u1ee7a b\u1ea1n \u0111ang \u0111\u00e1nh l\u1eeba n\u00f3 ngay l\u00fac n\u00e0y?<\/p>\n\n\n\n
C\u00e1c bi\u1ebfn s\u1ed1 l\u00e0m v\u00f4 hi\u1ec7u tra c\u1ee9u bi\u1ec3u \u0111\u1ed3 c\u1ee7a b\u1ea1n<\/h2>\n\n\n\n
B\u1ea1n \u0111ang \u0111\u1ee9ng \u0111\u00f3 v\u1edbi bi\u1ec3u \u0111\u1ed3 trong tay ngh\u0129, \u201c\u0110\u01b0\u1ee3c th\u00f4i. N\u1ebfu n\u00f3 ch\u1ec9 l\u00e0 m\u1ed9t ph\u1ecfng \u0111o\u00e1n l\u1ecbch s\u1ef1, th\u00ec tr\u01b0\u1edbc khi tr\u1ee5c \u00e9p h\u1ea1 xu\u1ed1ng t\u00f4i th\u1ef1c s\u1ef1 ph\u1ea3i d\u00f9ng c\u00e1i g\u00ec?\u201d<\/p>\n\n\n\n
T\u1ed1t. \u0110\u00f3 l\u00e0 c\u00e2u h\u1ecfi \u0111\u00fang.<\/p>\n\n\n\n
B\u1edfi v\u00ec m\u1ed9t khi b\u1ea1n ch\u1ea5p nh\u1eadn r\u1eb1ng bi\u1ec3u \u0111\u1ed3 kh\u00f4ng ph\u1ea3i l\u00e0 kinh th\u00e1nh, b\u1ea1n kh\u00f4ng th\u1ec3 nh\u00fan vai b\u1ecf qua. B\u1ea1n ph\u1ea3i x\u00e1c \u0111\u1ecbnh c\u00e1c bi\u1ebfn s\u1ed1 th\u1ef1c s\u1ef1 l\u00e0m thay \u0111\u1ed5i l\u1ef1c. Thay \u0111\u1ed5i v\u1eadt li\u1ec7u, kh\u1ea9u \u0111\u1ed9 khu\u00f4n, ho\u1eb7c chi\u1ec1u d\u00e0i u\u1ed1n, v\u00e0 b\u1ea1n kh\u00f4ng ch\u1ec9 ch\u1ec9nh m\u1ed9t con s\u1ed1 \u2014 b\u1ea1n \u0111\u00e3 thay \u0111\u1ed5i v\u1eadt l\u00fd c\u1ee7a c\u00e1ch th\u00e9p bi\u1ebfn d\u1ea1ng gi\u1eefa ch\u00e0y v\u00e0 khu\u00f4n. N\u1ebfu b\u1ea1n kh\u00f4ng t\u00ednh \u0111\u1ebfn \u0111i\u1ec1u \u0111\u00f3 tr\u01b0\u1edbc kho\u1ea3nh kh\u1eafc kh\u00f4ng th\u1ec3 quay l\u1ea1i, m\u00e1y s\u1ebd t\u00ednh \u0111\u1ebfn n\u00f3 sau.<\/p>\n\n\n\n
H\u00e3y ph\u00e2n t\u00edch ba y\u1ebfu t\u1ed1 ph\u00e1 h\u1ecfng nhi\u1ec1u d\u1ee5ng c\u1ee5 h\u01a1n l\u00e0 \u201cxui x\u1ebbo\u201d t\u1eebng l\u00e0m.<\/p>\n\n\n\n
\u0110\u1ed9 b\u1ec1n k\u00e9o c\u1ee7a v\u1eadt li\u1ec7u: T\u1ea1i sao th\u00e9p m\u1ec1m l\u00e0 m\u1ed9t ti\u00eau chu\u1ea9n sai l\u1ec7ch cho th\u00e9p kh\u00f4ng g\u1ec9 ho\u1eb7c nh\u00f4m<\/h3>\n\n\n\n
T\u00f4i \u0111\u00e3 th\u1ea5y m\u1ed9t x\u01b0\u1edfng chuy\u1ec3n t\u1eeb th\u00e9p m\u1ec1m A36 sang th\u00e9p kh\u00f4ng g\u1ec9 304 tr\u00ean c\u00f9ng lo\u1ea1i gi\u00e1 \u0111\u1ee1 d\u00e0y 1\/8 inch. C\u00f9ng \u0111\u1ed9 d\u00e0y. C\u00f9ng V-die. C\u00f9ng chi\u1ec1u d\u00e0i u\u1ed1n. Ng\u01b0\u1eddi v\u1eadn h\u00e0nh \u0111\u1ec3 nguy\u00ean m\u1ee9c t\u1ea3i v\u00ec \u201cn\u00f3 ch\u1ec9 l\u00e0 th\u00e9p kh\u00f4ng g\u1ec9.\u201d<\/p>\n\n\n\n
<\/figure>\n\n\n\nC\u00fa u\u1ed1n \u0111\u1ea7u ti\u00ean, g\u00f3c m\u1edf ra nh\u01b0 m\u1ed9t b\u1ea3n l\u1ec1 r\u1ebb ti\u1ec1n.<\/p>\n\n\n\n
T\u1ea1i sao? B\u1edfi v\u00ec h\u1ea7u h\u1ebft c\u00e1c b\u1ea3ng tra t\u01b0\u1eddng \u0111\u1ec1u \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng d\u1ef1a tr\u00ean th\u00e9p m\u1ec1m v\u1edbi s\u1ee9c b\u1ec1n k\u00e9o kho\u1ea3ng 60.000 PSI. \u0110\u00f3 l\u00e0 gi\u1ea3 \u0111\u1ecbnh ng\u1ea7m \u0111\u01b0\u1ee3c \u0111\u01b0a v\u00e0o b\u1ea3ng. Th\u00e9p kh\u00f4ng g\u1ec9 304 th\u01b0\u1eddng n\u1eb1m g\u1ea7n 75.000\u201385.000 PSI. \u0110\u00e2y kh\u00f4ng ph\u1ea3i l\u00e0 sai s\u1ed1 l\u00e0m tr\u00f2n. \u0110\u00e2y l\u00e0 m\u1ee9c t\u0103ng 25\u201340% s\u1ee9c c\u1ea3n \u0111\u1ed1i v\u1edbi s\u1ef1 ch\u1ea3y d\u1ebbo.<\/p>\n\n\n\n
\u0110\u00e2y l\u00e0 ph\u00e9p t\u00ednh nhanh tr\u00ean gi\u1ea5y:<\/p>\n\n\n\n
- \n
- T\u1ea3i tr\u1ecdng y\u00eau c\u1ea7u t\u1ef7 l\u1ec7 x\u1ea5p x\u1ec9 v\u1edbi s\u1ee9c b\u1ec1n k\u00e9o.<\/li>\n\n\n\n
- N\u1ebfu s\u1ee9c b\u1ec1n k\u00e9o t\u0103ng 30%, nhu c\u1ea7u l\u1ef1c s\u1ebd t\u0103ng kho\u1ea3ng 30%.<\/li>\n\n\n\n
- C\u00fa u\u1ed1n 40 t\u1ea5n c\u1ee7a b\u1ea1n gi\u1edd \u0111\u00e3 tr\u1edf th\u00e0nh c\u00fa u\u1ed1n 52 t\u1ea5n.<\/li>\n<\/ol>\n\n\n\n
V\u00e0 \u0111\u00f3 l\u00e0 tr\u01b0\u1edbc khi ch\u00fang ta n\u00f3i v\u1ec1 \u0111\u1ed9 \u0111\u00e0n h\u1ed3i tr\u1edf l\u1ea1i.<\/p>\n\n\n\n
Th\u00e9p kh\u00f4ng g\u1ec9 \u0111\u00e0n h\u1ed3i tr\u1edf l\u1ea1i m\u1ea1nh h\u01a1n th\u00e9p m\u1ec1m. Nh\u00f4m, t\u00f9y thu\u1ed9c v\u00e0o h\u1ee3p kim v\u00e0 tr\u1ea1ng th\u00e1i nhi\u1ec7t luy\u1ec7n, c\u00f3 th\u1ec3 \u0111i theo h\u01b0\u1edbng ng\u01b0\u1ee3c l\u1ea1i \u2014 s\u1ee9c b\u1ec1n k\u00e9o th\u1ea5p h\u01a1n, nh\u01b0ng \u0111\u1ed9 \u0111\u00e0n h\u1ed3i tr\u1edf l\u1ea1i l\u1edbn \u1edf m\u1ed9t s\u1ed1 tr\u1ea1ng th\u00e1i nhi\u1ec7t luy\u1ec7n. C\u00f4ng vi\u1ec7c y\u00eau c\u1ea7u \u0111\u1ed9 ch\u00ednh x\u00e1c cao \u0111\u00f4i khi c\u1ea7n nhi\u1ec1u l\u1ef1c h\u01a1n so v\u1edbi b\u1ea3ng tra \u0111\u1ec3 gi\u1eef g\u00f3c v\u00e0 ki\u1ec3m so\u00e1t \u0111\u1ed9 \u0111\u00e0n h\u1ed3i tr\u1edf l\u1ea1i. V\u00ec v\u1eady, b\u1ea1n r\u01a1i v\u00e0o c\u00e1i b\u1eaby: l\u1ef1c th\u1ea5p th\u00ec g\u00f3c m\u1edf v\u00e0 ph\u1ea3i \u0111i\u1ec1u ch\u1ec9nh li\u00ean t\u1ee5c; l\u1ef1c qu\u00e1 cao th\u00ec nguy c\u01a1 g\u00e3y khu\u00f4n v\u00e0 \u0111\u1ea7u ch\u00e0y b\u1ecb bi\u1ebfn d\u1ea1ng v\u1eeba \u0111\u1ee7 \u0111\u1ec3 l\u00e0m h\u1ecfng kh\u1ea3 n\u0103ng l\u1eb7p l\u1ea1i.<\/p>\n\n\n\n
R\u1ed3i c\u00f2n h\u01b0\u1edbng h\u1ea1t.<\/p>\n\n\n\n
U\u1ed1n m\u1ed9t chi ti\u1ebft theo h\u01b0\u1edbng ngang h\u1ea1t c\u00f3 th\u1ec3 c\u1ea7n nhi\u1ec1u h\u01a1n 5\u201315% l\u1ef1c so v\u1edbi u\u1ed1n theo h\u01b0\u1edbng d\u1ecdc h\u1ea1t. C\u00f9ng t\u1ea5m. C\u00f9ng \u0111\u1ed9 d\u00e0y. Kh\u00e1c h\u01b0\u1edbng. B\u1ea3ng tra gi\u1ea3 \u0111\u1ecbnh v\u1eadt li\u1ec7u \u0111\u1eb3ng h\u01b0\u1edbng \u2014 s\u1ee9c b\u1ec1n b\u1eb1ng nhau \u1edf m\u1ecdi h\u01b0\u1edbng. T\u1ea5m th\u1ef1c t\u1ebf th\u00ec kh\u00f4ng quan t\u00e2m b\u1ea3ng tra gi\u1ea3 \u0111\u1ecbnh g\u00ec.<\/p>\n\n\n\n
V\u1eady n\u1ebfu v\u1eadt li\u1ec7u c\u01a1 s\u1edf trong b\u1ea3ng tra l\u00e0 th\u00e9p m\u1ec1m v\u1edbi s\u1ee9c b\u1ec1n k\u00e9o c\u1ee5 th\u1ec3, v\u00e0 t\u1ea5m th\u1ef1c t\u1ebf c\u1ee7a b\u1ea1n l\u00e0 th\u00e9p kh\u00f4ng g\u1ec9 u\u1ed1n ngang h\u1ea1t t\u1eeb m\u1ed9t l\u00f4 nhi\u1ec7t luy\u1ec7n c\u1ee9ng h\u01a1n, th\u00ec b\u1ea1n \u0111ang \u201ctra c\u1ee9u\u201d c\u00e1i g\u00ec n\u1eefa?<\/p>\n\n\n\n
Kh\u1ea9u m\u1edf V-Die: H\u1ec7 s\u1ed1 \u1ea9n quy\u1ebft \u0111\u1ecbnh l\u1ef1c u\u1ed1n c\u1ea7n thi\u1ebft c\u1ee7a b\u1ea1n<\/h3>\n\n\n\n
Gi\u1edd h\u00e3y n\u00f3i v\u1ec1 khu\u00f4n m\u00e0 b\u1ea1n ch\u1ecdn ch\u1ec9 v\u00ec n\u00f3 \u0111\u00e3 c\u00f3 s\u1eb5n trong m\u00e1y.<\/p>\n\n\n\n
H\u1ea7u h\u1ebft c\u00e1c c\u00f4ng th\u1ee9c t\u00ednh t\u1ea3i tr\u1ecdng u\u1ed1n ki\u1ec3u air-bend \u0111\u1ec1u r\u00fat g\u1ecdn th\u00e0nh m\u1ed1i quan h\u1ec7 n\u00e0y: L\u1ef1c t\u1ef7 l\u1ec7 v\u1edbi \u0111\u1ed9 d\u00e0y b\u00ecnh ph\u01b0\u01a1ng, nh\u00e2n v\u1edbi s\u1ee9c b\u1ec1n k\u00e9o, chia cho kh\u1ea9u m\u1edf V-die.<\/p>\n\n\n\n
Ph\u1ea7n cu\u1ed1i n\u00e0y r\u1ea5t quan tr\u1ecdng. L\u1ef1c t\u1ef7 l\u1ec7 ngh\u1ecbch v\u1edbi kh\u1ea9u m\u1edf V.<\/p>\n\n\n\n
B\u1ea1n gi\u1ea3m m\u1ed9t n\u1eeda kh\u1ea9u m\u1edf V, b\u1ea1n s\u1ebd t\u0103ng g\u1ea5p \u0111\u00f4i t\u1ea3i tr\u1ecdng.<\/p>\n\n\n\n
V\u00ed d\u1ee5 c\u1ee5 th\u1ec3. Gi\u1ea3 s\u1eed th\u00e9p m\u1ec1m d\u00e0y 1\/4 inch, u\u1ed1n ki\u1ec3u air-bend trong kh\u1ea9u m\u1edf V l\u00e0 2 inch (kho\u1ea3ng 8\u00d7 \u0111\u1ed9 d\u00e0y). B\u1ea3ng tra n\u00f3i, gi\u1ea3 \u0111\u1ecbnh, 60 t\u1ea5n tr\u00ean chi\u1ec1u d\u00e0i u\u1ed1n c\u1ee7a b\u1ea1n. Gi\u1edd b\u1ea1n quy\u1ebft \u0111\u1ecbnh mu\u1ed1n b\u00e1n k\u00ednh trong ch\u1eb7t h\u01a1n v\u00e0 gi\u1ea3m xu\u1ed1ng kh\u1ea9u m\u1edf V 1 inch.<\/p>\n\n\n\n
C\u00f9ng v\u1eadt li\u1ec7u. C\u00f9ng \u0111\u1ed9 d\u00e0y. C\u00f9ng chi\u1ec1u d\u00e0i.<\/p>\n\n\n\n
M\u1eabu s\u1ed1 c\u1ee7a b\u1ea1n v\u1eeba b\u1ecb gi\u1ea3m m\u1ed9t n\u1eeda. T\u1ea3i tr\u1ecdng y\u00eau c\u1ea7u kh\u00f4ng \u0111i\u1ec1u ch\u1ec9nh nh\u1eb9 v\u00e0i ph\u1ea7n tr\u0103m. N\u00f3 nh\u1ea3y l\u00ean g\u1ea7n 120 t\u1ea5n.<\/p>\n\n\n\n
Tr\u00ean m\u1ed9t m\u00e1y ch\u1ea5n 100 t\u1ea5n.<\/p>\n\n\n\n
V\u00e0 \u0111\u00e2y l\u00e0 ch\u1ed7 m\u00e0 nhi\u1ec1u ng\u01b0\u1eddi b\u1ecb \u201cnghi\u1ec1n n\u00e1t\u201d v\u1ec1 t\u00e0i ch\u00ednh. H\u1ecd n\u00f3i: \u201cS\u1ed1 tr\u00ean b\u1ea3ng n\u1eb1m d\u01b0\u1edbi m\u1ee9c \u0111\u1ecbnh m\u1ee9c c\u1ee7a m\u00e1y t\u00f4i, t\u00f4i an to\u00e0n.\u201d Nh\u01b0ng h\u1ecd \u0111ang ngh\u0129 \u0111\u1ebfn t\u1ed5ng l\u1ef1c t\u1ea5n, ch\u1ee9 kh\u00f4ng ph\u1ea3i t\u1ea3i tr\u1ecdng tr\u00ean m\u1ed7i inch. M\u1ed9t m\u00e1y ch\u1ea5n 10 foot, 100 t\u1ea5n kh\u00f4ng c\u00f3 ngh\u0129a l\u00e0 100 t\u1ea5n \u1edf b\u1ea5t k\u1ef3 ch\u1ed7 n\u00e0o b\u1ea1n mu\u1ed1n. Gi\u1edbi h\u1ea1n t\u1ea3i tr\u1ecdng \u1edf \u0111\u01b0\u1eddng t\u00e2m th\u01b0\u1eddng ch\u1ec9 kho\u1ea3ng 60% c\u00f4ng su\u1ea5t t\u1ed1i \u0111a. Tr\u00ean m\u1ed9t b\u00e0n d\u00e0i 120 inch, \u0111i\u1ec1u \u0111\u00f3 c\u00f3 th\u1ec3 t\u01b0\u01a1ng \u0111\u01b0\u01a1ng kho\u1ea3ng 1,4 t\u1ea5n m\u1ed7i inch \u1edf \u0111\u01b0\u1eddng t\u00e2m.<\/p>\n\n\n\n
T\u1eadp trung qu\u00e1 nhi\u1ec1u l\u1ef1c \u1edf gi\u1eefa v\u1edbi m\u1ed9t khu\u00f4n h\u1eb9p v\u00e0 chi ti\u1ebft ng\u1eafn, b\u1ea1n kh\u00f4ng ch\u1ec9 l\u00e0m c\u0103ng d\u1ee5ng c\u1ee5 \u2014 b\u1ea1n \u0111ang l\u00e0m cong khung m\u00e1y. \u0110\u00f3 l\u00e0 c\u00e1ch b\u1ea1n t\u1ea1o ra bi\u1ebfn d\u1ea1ng v\u0129nh vi\u1ec5n. \u0110\u00f3 l\u00e0 c\u00e1ch c\u00e2u \u201c\u0110i\u1ec1u anh ta ch\u01b0a bao gi\u1edd ki\u1ec3m tra l\u00e0 b\u00e0n m\u00e1y\u201d tr\u1edf th\u00e0nh l\u1eddi gi\u1ea3i th\u00edch sau c\u00f9ng cho nhi\u1ec1u n\u0103m g\u00f3c u\u1ed1n kh\u00f4ng \u0111\u1ed3ng \u0111\u1ec1u.<\/p>\n\n\n\n
V\u1eady khi b\u1ea1n thay khu\u00f4n 8\u00d7T b\u1eb1ng 6\u00d7T ho\u1eb7c 4\u00d7T v\u00ec n\u00f3 \u201ctr\u00f4ng \u0111\u1eb9p h\u01a1n\u201d, b\u1ea1n c\u00f3 t\u00ednh l\u1ea1i l\u1ef1c \u2014 hay ch\u1ec9 nh\u00e2n \u0111\u00f4i n\u00f3 v\u00e0 hy v\u1ecdng h\u1ec7 th\u1ed1ng th\u1ee7y l\u1ef1c tha th\u1ee9 cho b\u1ea1n?<\/p>\n\n\n\n
Chi\u1ec1u d\u00e0i u\u1ed1n so v\u1edbi l\u1ef1c t\u1ea5n: T\u1ea1i sao t\u00ednh to\u00e1n cho chi\u1ec1u d\u00e0i t\u00f9y ch\u1ec9nh kh\u00f4ng ch\u1ec9 l\u00e0 ph\u00e9p chia c\u01a1 b\u1ea3n<\/h3>\n\n\n\n
T\u00f4i \u0111\u00e3 nghe \u0111i\u1ec1u n\u00e0y qu\u00e1 nhi\u1ec1u l\u1ea7n: \u201cB\u1ea3ng n\u00f3i 80 t\u1ea5n cho 10 foot. T\u00f4i ch\u1ec9 u\u1ed1n 2 foot. V\u1eady l\u00e0 16 t\u1ea5n. D\u1ec5 th\u00f4i.\u201d<\/p>\n\n\n\n
Ch\u1eadm l\u1ea1i.<\/p>\n\n\n\n
\u0110\u00fang, l\u1ef1c t\u1ea5n trong u\u1ed1n kh\u00f4ng ch\u1ea1m t\u1ef7 l\u1ec7 g\u1ea7n \u0111\u00fang v\u1edbi chi\u1ec1u d\u00e0i u\u1ed1n. U\u1ed1n ng\u1eafn h\u01a1n, t\u1ed5ng l\u1ef1c \u00edt h\u01a1n. Ph\u1ea7n \u0111\u00f3 \u0111\u00fang. Nh\u01b0ng m\u00e1y kh\u00f4ng ch\u1ec9 quan t\u00e2m \u0111\u1ebfn t\u1ed5ng s\u1ed1 t\u1ea5n. N\u00f3 quan t\u00e2m \u0111\u1ebfn c\u00e1ch nh\u1eefng t\u1ea5n \u0111\u00f3 \u0111\u01b0\u1ee3c ph\u00e2n b\u1ed1 d\u1ecdc theo b\u00e0n m\u00e1y.<\/p>\n\n\n\n
Gi\u1ea3 s\u1eed m\u00e1y ch\u1ea5n c\u1ee7a b\u1ea1n \u0111\u01b0\u1ee3c \u0111\u1ecbnh m\u1ee9c 100 t\u1ea5n tr\u00ean 120 inch. \u0110i\u1ec1u \u0111\u00f3 kho\u1ea3ng 0,83 t\u1ea5n m\u1ed7i inch n\u1ebfu ph\u00e2n b\u1ed1 ho\u00e0n h\u1ea3o. Nh\u01b0ng m\u00e1y th\u1ef1c t\u1ebf th\u01b0\u1eddng gi\u1edbi h\u1ea1n t\u1ea3i tr\u1ecdng \u1edf \u0111\u01b0\u1eddng t\u00e2m kho\u1ea3ng 60% m\u1ee9c \u0111\u1ecbnh m\u1ee9c \u0111\u1ec3 b\u1ea3o v\u1ec7 khung. L\u00fac n\u00e0y b\u1ea1n g\u1ea7n h\u01a1n v\u1edbi 1,4 t\u1ea5n m\u1ed7i inch nh\u01b0 m\u1ed9t gi\u1edbi h\u1ea1n c\u1ee9ng \u1edf v\u00f9ng gi\u1eefa.<\/p>\n\n\n\n
N\u1ebfu t\u00ednh to\u00e1n c\u1ee7a b\u1ea1n cho th\u1ea5y chi ti\u1ebft d\u00e0i 24 inch c\u1ea7n 40 t\u1ea5n, th\u00ec \u0111\u00f3 l\u00e0 1,67 t\u1ea5n m\u1ed7i inch.<\/p>\n\n\n\n
Tr\u00ean gi\u1ea5y, 40 nh\u1ecf h\u01a1n 100. Tr\u00f4ng c\u00f3 v\u1ebb an to\u00e0n.<\/p>\n\n\n\n
Th\u1ef1c t\u1ebf, b\u1ea1n v\u1eeba v\u01b0\u1ee3t qu\u00e1 gi\u1edbi h\u1ea1n k\u1ebft c\u1ea5u tr\u00ean m\u1ed7i inch \u1edf trung t\u00e2m m\u00e1y. \u0110\u00f3 l\u00e0 c\u00e1ch khung m\u00e1y c\u00f3 m\u1ed9t \u201cn\u1ee5 c\u01b0\u1eddi\u201d v\u0129nh vi\u1ec5n \u1edf gi\u1eefa. Kh\u00f4ng ph\u1ea3i trong m\u1ed9t l\u1ea7n h\u1ecfng h\u00f3c k\u1ecbch t\u00ednh \u2014 m\u00e0 trong h\u00e0ng ngh\u00ecn l\u1ea7n u\u1ed1n ng\u1eafn \u201can to\u00e0n\u201d \u00e2m th\u1ea7m l\u00e0m qu\u00e1 t\u1ea3i c\u00f9ng 2 foot b\u00e0n m\u00e1y.<\/p>\n\n\n\n
V\u00e0 \u0111\u00e2y l\u00e0 ph\u1ea7n tinh t\u1ebf: u\u1ed1n ng\u1eafn gi\u1ea3m t\u1ed5ng l\u1ef1c t\u1ea5n, nh\u01b0ng t\u0103ng nguy c\u01a1 qu\u00e1 t\u1ea3i c\u1ee5c b\u1ed9. B\u1ea3ng gi\u1ea3 \u0111\u1ecbnh ph\u00e2n b\u1ed1 to\u00e0n chi\u1ec1u d\u00e0i tr\u1eeb khi c\u00f3 ghi ch\u00fa kh\u00e1c. Chi\u1ec1u d\u00e0i t\u00f9y ch\u1ec9nh c\u1ee7a b\u1ea1n thay \u0111\u1ed5i \u0111\u01b0\u1eddng truy\u1ec1n t\u1ea3i b\u00ean trong m\u00e1y.<\/p>\n\n\n\n
V\u1eady n\u00ean, kh\u00f4ng, n\u00f3 kh\u00f4ng ch\u1ec9 l\u00e0 ph\u00e9p chia.<\/p>\n\n\n\n
\u0110\u00f3 l\u00e0 t\u1ed5ng l\u1ef1c, chia cho chi\u1ec1u d\u00e0i u\u1ed1n th\u1ef1c t\u1ebf, ki\u1ec3m tra v\u1edbi gi\u1edbi h\u1ea1n tr\u00ean m\u1ed7i inch, \u0111i\u1ec1u ch\u1ec9nh theo \u0111\u1ed9 r\u1ed9ng khu\u00f4n v\u00e0 \u0111\u1ed9 b\u1ec1n k\u00e9o th\u1ef1c t\u1ebf. \u0110\u00f3 l\u00e0 s\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa \u201can to\u00e0n theo b\u1ea3ng\u201d v\u00e0 an to\u00e0n v\u1ec1 m\u1eb7t c\u01a1 kh\u00ed.<\/p>\n\n\n\n
Gi\u1edd h\u00e3y l\u00f9i l\u1ea1i v\u00e0 nh\u00ecn v\u00e0o nh\u1eefng g\u00ec ch\u00fang ta \u0111\u00e3 kh\u00e1m ph\u00e1.<\/p>\n\n\n\n
V\u1eadt li\u1ec7u thay \u0111\u1ed5i l\u1ef1c c\u1ea7n thi\u1ebft \u0111\u1ec3 \u0111\u1ea1t gi\u1edbi h\u1ea1n ch\u1ea3y. \u0110\u1ed9 m\u1edf khu\u00f4n thay \u0111\u1ed5i l\u1ee3i th\u1ebf c\u01a1 h\u1ecdc. Chi\u1ec1u d\u00e0i u\u1ed1n thay \u0111\u1ed5i c\u00e1ch l\u1ef1c \u0111\u01b0\u1ee3c ph\u00e2n b\u1ed1 v\u00e0o khung m\u00e1y. Kh\u00f4ng c\u00e1i n\u00e0o l\u00e0 ch\u1ec9nh s\u1eeda mang t\u00ednh th\u1ea9m m\u1ef9. M\u1ed7i y\u1ebfu t\u1ed1 \u0111\u1ec1u vi\u1ebft l\u1ea1i ph\u01b0\u01a1ng tr\u00ecnh l\u1ef1c.<\/p>\n\n\n\n
N\u1ebfu b\u1ea3ng kh\u00f4ng th\u1ea5y \u0111\u01b0\u1ee3c nh\u1eefng bi\u1ebfn s\u1ed1 \u0111\u00f3, v\u00e0 m\u00e1y c\u1ee7a b\u1ea1n ch\u1eafc ch\u1eafn c\u1ea3m nh\u1eadn ch\u00fang, th\u00ec m\u1ed9t ph\u00e9p t\u00ednh s\u1ebd tr\u00f4ng nh\u01b0 th\u1ebf n\u00e0o n\u1ebfu th\u1ef1c s\u1ef1 t\u00ednh \u0111\u1ebfn c\u1ea3 ba y\u1ebfu t\u1ed1 tr\u01b0\u1edbc khi ch\u00e0y \u00e9p \u0111i xu\u1ed1ng?<\/p>\n\n\n\n
C\u00f4ng th\u1ee9c l\u1ef1c t\u1ea5n ph\u1ed5 qu\u00e1t (v\u00e0 c\u00e1ch th\u1ef1c s\u1ef1 s\u1eed d\u1ee5ng n\u00f3)<\/h2>\n\n\n\n
B\u1ea1n c\u00f3 m\u1ed9t t\u1ea5m th\u00e9p d\u00e0y 1\/4 inch tr\u00ean b\u00e0n. U\u1ed1n d\u00e0i 10 foot. Kh\u00e1ch h\u00e0ng mu\u1ed1n giao ngay h\u00f4m nay. B\u1ea3ng tr\u00ean t\u01b0\u1eddng cho m\u1ed9t con s\u1ed1. C\u1ea3m gi\u00e1c c\u1ee7a b\u1ea1n n\u00f3i m\u1ed9t con s\u1ed1 kh\u00e1c. D\u00f9 th\u1ebf n\u00e0o th\u00ec ch\u00e0y \u00e9p v\u1eabn \u0111i xu\u1ed1ng.<\/p>\n\n\n\n
V\u1eady tr\u01b0\u1edbc kho\u1ea3nh kh\u1eafc \u201c\u0111i\u1ec3m kh\u00f4ng th\u1ec3 quay l\u1ea1i\u201d \u0111\u00f3, ph\u00e9p to\u00e1n th\u1ef1c s\u1ef1 tr\u00f4ng nh\u01b0 th\u1ebf n\u00e0o?<\/p>\n\n\n\n
N\u00f3 tr\u00f4ng nh\u01b0 th\u1ebf n\u00e0y: T\u1ea3i tr\u1ecdng = (575 \u00d7 T\u00b2 \u00d7 L) \/ V<\/strong><\/p>\n\n\n\n
\u0110\u00f3 kh\u00f4ng ph\u1ea3i l\u00e0 bi\u1ec3u \u0111\u1ed3. \u0110\u00f3 l\u00e0 m\u1ed9t m\u00f4 h\u00ecnh. N\u00f3 bu\u1ed9c b\u1ea1n ph\u1ea3i nh\u1eadp \u0111\u1ed9 d\u00e0y, chi\u1ec1u d\u00e0i u\u1ed1n v\u00e0 kh\u1ea9u \u0111\u1ed9 khu\u00f4n thay v\u00ec gi\u1ea3 v\u1edd r\u1eb1ng ch\u00fang kh\u00f4ng thay \u0111\u1ed5i.<\/p>\n\n\n\n
V\u00e0 n\u1ebfu b\u1ea1n c\u00f3 th\u1ec3 nh\u00e2n ba s\u1ed1 v\u00e0 chia cho m\u1ed9t s\u1ed1, b\u1ea1n c\u00f3 th\u1ec3 t\u1ef1 t\u00ednh.<\/p>\n\n\n\n
Ph\u00e2n t\u00edch ph\u00e9p to\u00e1n: T\u1ea3i tr\u1ecdng = (575 \u00d7 T\u00b2 \u00d7 L) \/ V<\/h3>\n\n\n\n
H\u00e3y b\u1eaft \u0111\u1ea7u v\u1edbi m\u1ed9t v\u00ed d\u1ee5 th\u1ef1c t\u1ebf.<\/p>\n\n\n\n
Gi\u1ea3 s\u1eed b\u1ea1n u\u1ed1n kh\u00f4ng ch\u1ea1m 1\/4 inch th\u00e9p m\u1ec1m (0,25 in) tr\u00ean 120 inch b\u1eb1ng khu\u00f4n V 2 inch.<\/p>\n\n\n\n
B\u01b0\u1edbc 1 \u2014 B\u00ecnh ph\u01b0\u01a1ng \u0111\u1ed9 d\u00e0y. 0,25\u00b2 = 0,0625<\/p>\n\n\n\n
B\u01b0\u1edbc 2 \u2014 Nh\u00e2n v\u1edbi 575 v\u00e0 chi\u1ec1u d\u00e0i u\u1ed1n. 575 \u00d7 0,0625 \u00d7 120 575 \u00d7 7,5 = 4.312,5<\/p>\n\n\n\n
B\u01b0\u1edbc 3 \u2014 Chia cho kh\u1ea9u \u0111\u1ed9 khu\u00f4n V. 4.312,5 \/ 2 = 2.156 t\u1ea5n?<\/strong> Kh\u00f4ng. H\u00e3y ch\u00fa \u00fd \u0111\u01a1n v\u1ecb.<\/p>\n\n\n\n
H\u1eb1ng s\u1ed1 575 \u0111\u00f3 \u0111\u00e3 t\u00ednh cho th\u00e9p m\u1ec1m khi u\u1ed1n kh\u00f4ng ch\u1ea1m v\u00e0 cho ra pound tr\u00ean m\u1ed7i inch u\u1ed1n<\/strong>, kh\u00f4ng ph\u1ea3i t\u1ed5ng s\u1ed1 t\u1ea5n. Nh\u00e2n \u0111\u00fang c\u00e1ch v\u00e0 b\u1ea1n s\u1ebd ra kho\u1ea3ng 197 t\u1ea5n t\u1ed5ng c\u1ed9ng<\/strong> cho \u0111o\u1ea1n u\u1ed1n 10 foot v\u1edbi khu\u00f4n 2 inch.<\/p>\n\n\n\n
B\u00e2y gi\u1edd ch\u1ec9 thay \u0111\u1ed5i m\u1ed9t th\u1ee9: \u0111\u1ed5i sang khu\u00f4n V 3 inch.<\/p>\n\n\n\n
M\u1ecdi th\u1ee9 kh\u00e1c gi\u1eef nguy\u00ean.<\/p>\n\n\n\n
B\u1ea1n chia cho 3 thay v\u00ec 2. T\u1ea3i tr\u1ecdng y\u00eau c\u1ea7u gi\u1ea3m xu\u1ed1ng kho\u1ea3ng 139 t\u1ea5n<\/strong>.<\/p>\n\n\n\n
C\u00f9ng v\u1eadt li\u1ec7u. C\u00f9ng \u0111\u1ed9 d\u00e0y. C\u00f9ng chi\u1ec1u d\u00e0i.<\/p>\n\n\n\n
Bi\u1ebfn \u0111\u1ed9ng ba m\u01b0\u01a1i ph\u1ea7n tr\u0103m ch\u1ec9 v\u00ec m\u1ed9t d\u1ee5ng c\u1ee5 n\u1eb1m trong gi\u00e1 c\u1ee7a b\u1ea1n.<\/p>\n\n\n\n
\u0110\u00f3 l\u00e0 l\u00fd do t\u1ea1i sao c\u00e1c b\u1ea3ng bi\u1ec3u ch\u1ec9 l\u00e0 nh\u1eefng d\u1ef1 \u0111o\u00e1n l\u1ecbch s\u1ef1. Ch\u00fang gi\u1ea3 \u0111\u1ecbnh m\u1ed9t V \u201cti\u00eau chu\u1ea9n\u201d, th\u01b0\u1eddng l\u00e0 8\u00d7 \u0111\u1ed9 d\u00e0y. C\u00f4ng th\u1ee9c th\u00ec kh\u00f4ng gi\u1ea3 \u0111\u1ecbnh. N\u00f3 bu\u1ed9c b\u1ea1n ph\u1ea3i n\u00f3i ra m\u1eabu s\u1ed1 m\u1ed9t c\u00e1ch r\u00f5 r\u00e0ng. V\u00e0 m\u1ed9t khi b\u1ea1n th\u1ea5y t\u1ea3i tr\u1ecdng ph\u1ea3n \u1ee9ng m\u1ea1nh m\u1ebd th\u1ebf n\u00e0o v\u1edbi \u0111\u1ed9 m\u1edf V, b\u1ea1n s\u1ebd ng\u1eebng ch\u1ecdn khu\u00f4n ch\u1ec9 v\u00ec ch\u00fang ti\u1ec7n l\u1ee3i.<\/p>\n\n\n\n
Nh\u01b0ng \u0111\u00e2y l\u00e0 ph\u1ea7n m\u00e0 nhi\u1ec1u ng\u01b0\u1eddi b\u1ecf s\u00f3t.<\/p>\n\n\n\n
C\u00f4ng th\u1ee9c n\u00e0y \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng d\u1ef1a tr\u00ean u\u1ed1n kh\u00ed th\u00e9p m\u1ec1m \u1edf kho\u1ea3ng 60.000 PSI s\u1ee9c b\u1ec1n k\u00e9o<\/strong>. H\u1eb1ng s\u1ed1 575 \u0111\u00e3 bao g\u1ed3m gi\u1ea3 \u0111\u1ecbnh \u0111\u00f3. Thay \u0111\u1ed5i v\u1eadt li\u1ec7u, v\u00e0 h\u1eb1ng s\u1ed1 \u0111\u00f3 s\u1ebd n\u00f3i d\u1ed1i b\u1ea1n.<\/p>\n\n\n\n
V\u1eady l\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 \u0111i\u1ec1u ch\u1ec9nh m\u00e0 kh\u00f4ng ph\u1ea3i vi\u1ebft l\u1ea1i to\u00e0n b\u1ed9 ph\u01b0\u01a1ng tr\u00ecnh?<\/p>\n\n\n\n
H\u1ec7 s\u1ed1 nh\u00e2n v\u1eadt li\u1ec7u: \u00c1p d\u1ee5ng c\u00e1c h\u1ec7 s\u1ed1 \u0111i\u1ec1u ch\u1ec9nh cho h\u1ee3p kim c\u01b0\u1eddng \u0111\u1ed9 cao v\u00e0 t\u00ecnh tr\u1ea1ng v\u1eadt li\u1ec7u<\/h3>\n\n\n\n
T\u00f4i \u0111\u00e3 ch\u1ee9ng ki\u1ebfn m\u1ed9t x\u01b0\u1edfng chuy\u1ec3n t\u1eeb A36 sang th\u00e9p kh\u00f4ng g\u1ec9 304 v\u00e0 v\u1eabn gi\u1eef nguy\u00ean c\u00e1c con s\u1ed1 trong b\u1ea3ng. Tu\u1ea7n \u0111\u1ea7u ti\u00ean, kh\u00f4ng c\u00f3 g\u00ec n\u1ed5 tung. Tu\u1ea7n th\u1ee9 hai, \u0111\u1ea7u ch\u00e0y b\u1eaft \u0111\u1ea7u b\u1ecb ph\u00ecnh. Tu\u1ea7n th\u1ee9 ba, h\u1ecd \u0111\u1ed5 l\u1ed7i cho nh\u00e0 cung c\u1ea5p d\u1ee5ng c\u1ee5.<\/p>\n\n\n\n
\u0110i\u1ec1u g\u00ec \u0111\u00e3 thay \u0111\u1ed5i? S\u1ee9c b\u1ec1n k\u00e9o.<\/p>\n\n\n\n
Th\u00e9p m\u1ec1m c\u01a1 b\u1ea3n: ~60.000 PSI. Th\u00e9p kh\u00f4ng g\u1ec9 304: th\u01b0\u1eddng 75.000\u201385.000 PSI.<\/p>\n\n\n\n
\u0110\u00e2y l\u00e0 c\u00e1ch t\u00ednh nhanh tr\u00ean gi\u1ea5y:<\/p>\n\n\n\n
H\u1ec7 s\u1ed1 nh\u00e2n v\u1eadt li\u1ec7u \u2248 (S\u1ee9c b\u1ec1n k\u00e9o th\u1ef1c t\u1ebf) \/ (m\u1ed1c 60.000 PSI)<\/p>\n\n\n\n
N\u1ebfu th\u00e9p kh\u00f4ng g\u1ec9 c\u1ee7a b\u1ea1n l\u00e0 75.000 PSI: 75.000 \/ 60.000 = 1.25<\/strong><\/p>\n\n\n\n
\u0110i\u1ec1u \u0111\u00f3 c\u00f3 ngh\u0129a l\u00e0 ph\u00e9p t\u00ednh 139 t\u1ea5n v\u1edbi khu\u00f4n 3 inch? Nh\u00e2n v\u1edbi 1,25.<\/p>\n\n\n\n
B\u00e2y gi\u1edd b\u1ea1n \u0111\u1ea1t 174 t\u1ea5n<\/strong>.<\/p>\n\n\n\n
M\u00e1y \u00e9p 150 t\u1ea5n c\u1ee7a b\u1ea1n v\u1eeba \u00e2m th\u1ea7m tr\u1edf n\u00ean thi\u1ebfu t\u1ea3i ph\u1ea3i kh\u00f4ng?<\/p>\n\n\n\n
V\u00e0 \u0111\u00f3 l\u00e0 tr\u01b0\u1edbc khi h\u01b0\u1edbng h\u1ea1t ho\u1eb7c c\u00e1c l\u00f4 nhi\u1ec7t c\u1ee9ng h\u01a1n \u0111\u1ea9y b\u1ea1n th\u00eam 5\u201315%.<\/p>\n\n\n\n
C\u00f4ng vi\u1ec7c \u0111\u1ed9 ch\u00ednh x\u00e1c cao \u0111\u00f4i khi c\u1ea7n nhi\u1ec1u l\u1ef1c h\u01a1n bi\u1ec3u \u0111\u1ed3 g\u1ee3i \u00fd \u0111\u1ec3 gi\u1eef g\u00f3c v\u00e0 ki\u1ec3m so\u00e1t \u0111\u1ed9 b\u1eadt l\u1ea1i. Th\u00e9p kh\u00f4ng ch\u1ec9 c\u1ea7n nhi\u1ec1u l\u1ef1c h\u01a1n \u0111\u1ec3 ch\u1ea3y; n\u00f3 c\u00f2n ch\u1ed1ng l\u1ea1i b\u1ea1n khi tr\u1edf l\u1ea1i. Ng\u01b0\u1eddi v\u1eadn h\u00e0nh b\u00f9 \u0111\u1eafp b\u1eb1ng c\u00e1ch \u00e9p s\u00e2u h\u01a1n, t\u0103ng t\u1ea3i g\u1ea7n cu\u1ed1i h\u00e0nh tr\u00ecnh n\u01a1i l\u1ef1c t\u0103ng nhanh nh\u1ea5t. \u0110\u00f3 l\u00e0 n\u01a1i khu\u00f4n b\u1ecb g\u00e3y x\u1ea3y ra.<\/p>\n\n\n\n
C\u00f4ng th\u1ee9c kh\u00f4ng b\u1ea3o v\u1ec7 b\u1ea1n kh\u1ecfi \u0111i\u1ec1u \u0111\u00f3.<\/p>\n\n\n\n
N\u00f3 ch\u1ec9 l\u00e0m cho r\u1ee7i ro tr\u1edf n\u00ean r\u00f5 r\u00e0ng.<\/p>\n\n\n\n
Nh\u01b0ng ch\u00fang ta v\u1eabn \u0111ang gi\u1ea3 \u0111\u1ecbnh u\u1ed1n b\u1eb1ng kh\u00f4ng kh\u00ed. V\u00e0 gi\u1ea3 \u0111\u1ecbnh \u0111\u00f3 c\u00f3 th\u1ec3 nh\u00e2n \u0111\u00f4i l\u1ef1c c\u1ee7a b\u1ea1n trong ch\u1edbp m\u1eaft.<\/p>\n\n\n\n
C\u1eafm c\u00e1c bi\u1ebfn th\u1ef1c t\u1ebf: M\u1ed9t v\u00ed d\u1ee5 t\u1eebng b\u01b0\u1edbc t\u1eeb ph\u00f4i \u0111\u1ebfn u\u1ed1n<\/h3>\n\n\n\n
H\u00e3y ch\u1ea1y n\u00f3 s\u1ea1ch s\u1ebd, t\u1eeb \u0111\u1ea7u.<\/p>\n\n\n\n
K\u1ecbch b\u1ea3n:<\/strong><\/p>\n\n\n\n
- \n
- V\u1eadt li\u1ec7u: Th\u00e9p kh\u00f4ng g\u1ec9 304 d\u00e0y 1\/4 inch \u1edf 75.000 PSI<\/li>\n\n\n\n
- Chi\u1ec1u d\u00e0i u\u1ed1n: 120 inch<\/li>\n\n\n\n
- Khu\u00f4n: V 3 inch<\/li>\n\n\n\n
- Ph\u01b0\u01a1ng ph\u00e1p: U\u1ed1n b\u1eb1ng kh\u00f4ng kh\u00ed<\/li>\n<\/ul>\n\n\n\n
B\u01b0\u1edbc 1 \u2014 T\u00ednh to\u00e1n c\u01a1 b\u1ea3n u\u1ed1n b\u1eb1ng kh\u00f4ng kh\u00ed (m\u1ed1c th\u00e9p m\u1ec1m):<\/strong><\/p>\n\n\n\n
T = 0,25 T\u00b2 = 0,0625<\/p>\n\n\n\n
575 \u00d7 0,0625 \u00d7 120 \u00f7 3 = 575 \u00d7 7,5 \u00f7 3 = 4.312,5 \u00f7 3 \u2248 1.437,5 (theo thang quy \u0111\u1ed5i tr\u0103m c\u00e2n) \u2248 139 t\u1ea5n<\/strong> cho u\u1ed1n b\u1eb1ng kh\u00f4ng kh\u00ed th\u00e9p m\u1ec1m<\/p>\n\n\n\n
B\u01b0\u1edbc 2 \u2014 \u00c1p d\u1ee5ng h\u1ec7 s\u1ed1 nh\u00e2n v\u1eadt li\u1ec7u:<\/strong><\/p>\n\n\n\n
75,000 \/ 60,000 = 1.25<\/p>\n\n\n\n
139 \u00d7 1,25 = 174 t\u1ea5n<\/strong><\/p>\n\n\n\n
B\u01b0\u1edbc 3 \u2014 Ki\u1ec3m tra ph\u00e2n b\u1ed1 theo m\u1ed7i foot:<\/strong><\/p>\n\n\n\n
174 t\u1ea5n \u00f7 10 ft = 17,4 t\u1ea5n m\u1ed7i foot.<\/p>\n\n\n\n
N\u1ebfu m\u00e1y ch\u1ea5n 150 t\u1ea5n, d\u00e0i 10 feet c\u1ee7a b\u1ea1n \u0111\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1 kho\u1ea3ng 25 t\u1ea5n\/foot ph\u00e2n b\u1ed1 \u0111\u1ec1u, th\u00ec v\u1ec1 m\u1eb7t k\u1ebft c\u1ea5u b\u1ea1n \u1ed5n \u2014 nh\u01b0ng b\u1ea1n \u0111\u00e3 v\u01b0\u1ee3t qu\u00e1 t\u1ed5ng c\u00f4ng su\u1ea5t c\u1ee7a m\u00e1y.<\/p>\n\n\n\n
V\u00ec v\u1eady b\u1ea1n ho\u1eb7c:<\/p>\n\n\n\n
- \n
- T\u0103ng k\u00edch th\u01b0\u1edbc khe V,<\/li>\n\n\n\n
- R\u00fat ng\u1eafn chi\u1ec1u d\u00e0i u\u1ed1n,<\/li>\n\n\n\n
- Ho\u1eb7c chuy\u1ec3n sang m\u00e1y ch\u1ea5n l\u1edbn h\u01a1n.<\/li>\n<\/ul>\n\n\n\n
Gi\u1edd ch\u1ec9 thay \u0111\u1ed5i m\u1ed9t \u0111i\u1ec1u: chuy\u1ec3n t\u1eeb u\u1ed1n kh\u00f4ng ch\u1ea1m (air bending) sang u\u1ed1n ch\u1ea1m \u0111\u00e1y<\/strong>.<\/p>\n\n\n\n
U\u1ed1n \u0111\u00e1y (bottom bending) th\u01b0\u1eddng y\u00eau c\u1ea7u \u00edt nh\u1ea5t g\u1ea5p 2\u00d7 t\u1ea3i u\u1ed1n kh\u00f4ng ch\u1ea1m<\/strong> cho c\u00f9ng thi\u1ebft l\u1eadp.<\/p>\n\n\n\n
174 \u00d7 2 = 348 t\u1ea5n<\/strong>.<\/p>\n\n\n\n
\u0110\u00f3 kh\u00f4ng ph\u1ea3i l\u00e0 m\u1ed9t \u0111i\u1ec1u ch\u1ec9nh nh\u1ecf. \u0110\u00f3 l\u00e0 m\u1ed9t lo\u1ea1i m\u00e1y kh\u00e1c h\u1eb3n.<\/p>\n\n\n\n
\u0110\u00e2y l\u00e0 l\u00fd do g\u1ecdi n\u00f3 l\u00e0 c\u00f4ng th\u1ee9c \u201cph\u1ed5 qu\u00e1t\u201d m\u00e0 kh\u00f4ng n\u00eau ph\u01b0\u01a1ng ph\u00e1p u\u1ed1n l\u00e0 c\u00e1ch khi\u1ebfn c\u00e1c x\u01b0\u1edfng b\u1ecb n\u1ee9t vai m\u00e1y v\u00e0 b\u00e0n m\u00e1y b\u1ecb cong v\u0129nh vi\u1ec5n \u1edf gi\u1eefa. Ph\u01b0\u01a1ng tr\u00ecnh cho b\u1ea1n gi\u00e1 tr\u1ecb c\u01a1 b\u1ea3n cho u\u1ed1n kh\u00f4ng ch\u1ea1m. Ph\u01b0\u01a1ng ph\u00e1p x\u00e1c \u0111\u1ecbnh h\u1ec7 s\u1ed1 nh\u00e2n.<\/p>\n\n\n\n
V\u00ec v\u1eady tr\u01b0\u1edbc khi \u0111\u1ea7u m\u00e1y ch\u1ea5n \u0111i xu\u1ed1ng, danh s\u00e1ch ki\u1ec3m tra c\u1ee7a b\u1ea1n kh\u00f4ng ph\u1ea3i l\u00e0:<\/p>\n\n\n\n
\u201cBi\u1ec3u \u0111\u1ed3 n\u00f3i g\u00ec?\u201d<\/p>\n\n\n\n
M\u00e0 l\u00e0:<\/p>\n\n\n\n
- \n
- \u0110\u1ed9 d\u00e0y b\u00ecnh ph\u01b0\u01a1ng.<\/li>\n\n\n\n
- Nh\u00e2n v\u1edbi chi\u1ec1u d\u00e0i v\u00e0 h\u1eb1ng s\u1ed1 c\u01a1 b\u1ea3n.<\/li>\n\n\n\n
- Chia cho k\u00edch th\u01b0\u1edbc khe V th\u1ef1c t\u1ebf.<\/li>\n\n\n\n
- Nh\u00e2n v\u1edbi t\u1ef7 l\u1ec7 \u0111\u1ed9 b\u1ec1n k\u00e9o c\u1ee7a v\u1eadt li\u1ec7u.<\/li>\n\n\n\n
- Nh\u00e2n l\u1ea1i n\u1ebfu b\u1ea1n kh\u00f4ng \u0111ang u\u1ed1n gi\u00f3.<\/li>\n\n\n\n
- Chia cho chi\u1ec1u d\u00e0i u\u1ed1n v\u00e0 so s\u00e1nh v\u1edbi gi\u1edbi h\u1ea1n m\u00e1y t\u00ednh theo m\u1ed7i inch.<\/li>\n<\/ol>\n\n\n\n
B\u1ecf s\u00f3t m\u1ed9t trong nh\u1eefng b\u01b0\u1edbc \u0111\u00f3, v\u00e0 b\u1ea1n s\u1ebd l\u00e0 ng\u01b0\u1eddi ph\u1ea3i gi\u1ea3i th\u00edch cho ch\u1ee7 m\u00e1y v\u00ec sao b\u1ed9 d\u1ee5ng c\u1ee5 $10,000 b\u1ecb s\u1ee9t m\u1ebb ch\u1ec9 v\u00ec ph\u00e9p t\u00ednh \u201cg\u1ea7n \u0111\u00fang\u201d l\u00e0 \u0111\u1ee7.\u201d<\/p>\n\n\n\n
Ch\u00fang ta \u0111\u00e3 x\u00e2y d\u1ef1ng \u0111\u01b0\u1eddng c\u01a1 s\u1edf. Gi\u1edd b\u1ea1n c\u00f3 th\u1ec3 t\u00ednh to\u00e1n l\u1ef1c u\u1ed1n gi\u00f3 th\u1ef1c t\u1ebf thay v\u00ec tin v\u00e0o m\u1ed9t ph\u1ecfng \u0111o\u00e1n l\u1ecbch s\u1ef1.<\/p>\n\n\n\n
Nh\u01b0ng chuy\u1ec7n g\u00ec x\u1ea3y ra khi u\u1ed1n \u00e9p, u\u1ed1n \u0111\u00e1y ho\u1eb7c t\u1ea1o h\u00ecnh \u0111\u1eb7c bi\u1ec7t thay \u0111\u1ed5i ho\u00e0n to\u00e0n v\u1eadt l\u00fd v\u00e0 bi\u1ebfn \u0111\u01b0\u1eddng c\u01a1 s\u1edf \u0111\u00f3 th\u00e0nh m\u1ed9t s\u1ef1 \u0111\u00e1nh gi\u00e1 th\u1ea5p nguy hi\u1ec3m?<\/p>\n\n\n\n
\u0110i\u1ec1u ch\u1ec9nh theo ph\u01b0\u01a1ng ph\u00e1p u\u1ed1n c\u1ee7a b\u1ea1n: B\u1ea3ng ch\u1ec9 k\u1ec3 m\u1ed9t c\u00e2u chuy\u1ec7n<\/h2>\n\n\n\n
B\u1ea1n c\u00f3 c\u00f4ng vi\u1ec7c th\u00e9p kh\u00f4ng g\u1ec9 304 d\u00e0y 1\/4 inch m\u00e0 ch\u00fang ta v\u1eeba t\u00ednh to\u00e1n \u2014 174 t\u1ea5n khi u\u1ed1n gi\u00f3 tr\u00ean 10 feet v\u1edbi V 3 inch. M\u00e1y \u0111\u00e3 c\u0103ng \u1edf m\u1ee9c c\u00f4ng su\u1ea5t 150 t\u1ea5n. Gi\u1edd gi\u1ea3 s\u1eed b\u1ea1n quy\u1ebft \u0111\u1ecbnh g\u00f3c ph\u1ea3i ch\u00ednh x\u00e1c tuy\u1ec7t \u0111\u1ed1i v\u00e0 b\u1ea1n kh\u00f4ng tin v\u00e0o \u0111\u1ed9 h\u1ed3i l\u00f2 xo. V\u00ec v\u1eady b\u1ea1n chuy\u1ec3n t\u1eeb u\u1ed1n gi\u00f3 sang u\u1ed1n \u0111\u00e1y m\u00e0 kh\u00f4ng thay \u0111\u1ed5i ph\u00e9p t\u00ednh.<\/p>\n\n\n\n
C\u1eef ch\u00e0y h\u1ea1 xu\u1ed1ng.<\/p>\n\n\n\n
B\u1ea1n kh\u00f4ng thay \u0111\u1ed5i \u0111\u1ed9 d\u00e0y. Kh\u00f4ng thay \u0111\u1ed5i chi\u1ec1u d\u00e0i. Kh\u00f4ng thay \u0111\u1ed5i khu\u00f4n. Nh\u01b0ng b\u1ea1n \u0111\u00e3 thay \u0111\u1ed5i v\u1eadt l\u00fd. V\u00e0 \u0111\u00f3 l\u00e0 l\u00fac ng\u01b0\u1eddi ta bi\u1ebfn m\u1ed9t ph\u00e9p t\u00ednh ki\u1ec3m so\u00e1t th\u00e0nh m\u1ed9t khu\u00f4n b\u1ecb g\u00e3y v\u00e0 m\u1ed9t cu\u1ed9c g\u1ecdi m\u00e0 kh\u00f4ng ai mu\u1ed1n th\u1ef1c hi\u1ec7n.<\/p>\n\n\n\n
H\u00e3y ph\u00e2n t\u00edch l\u00fd do t\u1ea1i sao.<\/p>\n\n\n\n
U\u1ed1n gi\u00f3: Gi\u1ea3 \u0111\u1ecbnh c\u01a1 b\u1ea3n c\u1ee7a h\u1ea7u h\u1ebft m\u1ecdi b\u1ea3ng l\u1ef1c u\u1ed1n chung<\/h3>\n\n\n\n
H\u00e3y h\u00ecnh dung ch\u00e0y l\u01a1 l\u1eedng ph\u00eda tr\u00ean khu\u00f4n V. Trong u\u1ed1n gi\u00f3, v\u1eadt li\u1ec7u ti\u1ebfp x\u00fac v\u1edbi m\u0169i ch\u00e0y v\u00e0 hai vai khu\u00f4n. Ba \u0111i\u1ec3m. Ch\u1ec9 v\u1eady th\u00f4i. T\u1ea5m kim lo\u1ea1i kh\u00f4ng bao gi\u1edd ho\u00e0n to\u00e0n n\u1eb1m v\u00e0o khoang khu\u00f4n.<\/p>\n\n\n\n
Y\u00eau c\u1ea7u l\u1ef1c \u0111\u01b0\u1ee3c quy\u1ebft \u0111\u1ecbnh b\u1edfi kho\u1ea3ng c\u00e1ch \u2014 \u0111\u1ed9 m\u1edf V \u2014 v\u00e0 gi\u1edbi h\u1ea1n ch\u1ea3y c\u1ee7a v\u1eadt li\u1ec7u. H\u1eb1ng s\u1ed1 575 m\u00e0 ch\u00fang ta d\u00f9ng? N\u00f3 gi\u1ea3 \u0111\u1ecbnh ch\u00ednh x\u00e1c \u0111i\u1ec1u n\u00e0y: u\u1ed1n gi\u00f3, th\u00e9p m\u1ec1m 60,000 PSI, \u0111\u1ed9 r\u1ed9ng V \u0111i\u1ec3n h\u00ecnh. \u0110\u00e2y l\u00e0 m\u00f4 h\u00ecnh c\u1ee7a m\u1ed9t d\u1ea7m b\u1ecb \u0111\u1ea9y gi\u1eefa hai \u0111i\u1ec3m t\u1ef1a.<\/p>\n\n\n\n
B\u1ea1n kh\u00f4ng \u00e9p kim lo\u1ea1i kh\u1edbp v\u1edbi b\u00e1n k\u00ednh khu\u00f4n. B\u1ea1n \u0111\u1ec3 n\u00f3 n\u1ed5i v\u00e0 h\u1ed3i l\u00f2 xo m\u1ed9t ch\u00fat. \u0110\u00f3 l\u00e0 l\u00fd do \u0111\u1ed9 m\u1edf V quan tr\u1ecdng \u0111\u1ebfn m\u1ee9c d\u1eef d\u1ed9i \u2014 b\u1ea1n \u0111ang ki\u1ec3m so\u00e1t \u0111\u00f2n b\u1ea9y, kh\u00f4ng nghi\u1ec1n n\u00e1t chi ti\u1ebft th\u00e0nh h\u00ecnh d\u1ea1ng.<\/p>\n\n\n\n
V\u00e0 v\u00ec ch\u1ec9 ba \u0111i\u1ec3m ti\u1ebfp x\u00fac ch\u1ecbu t\u1ea3i, l\u1ef1c u\u1ed1n t\u0103ng \u0111\u1ec1u khi \u0111\u1ed9 xuy\u00ean s\u00e2u t\u0103ng. D\u1ef1 \u0111o\u00e1n \u0111\u01b0\u1ee3c. Ki\u1ec3m so\u00e1t \u0111\u01b0\u1ee3c. \u0110\u00f3 l\u00e0 l\u00fd do 80% c\u1ee7a c\u00e1c b\u1ea3ng chung \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng quanh u\u1ed1n gi\u00f3. N\u00f3 d\u1ec5 tha th\u1ee9. N\u00f3 hi\u1ec7u qu\u1ea3. N\u00f3 gi\u1eef cho m\u00e1y s\u1ed1ng.<\/p>\n\n\n\n
Ngay c\u1ea3 c\u00e1c b\u1ea3ng b\u1ea3o th\u1ee7 t\u1eeb nh\u1eefng nh\u00e0 s\u1ea3n xu\u1ea5t uy t\u00edn c\u0169ng kh\u1edbp v\u1edbi s\u1ea3n xu\u1ea5t th\u1ef1c t\u1ebf \u2014 v\u00ec h\u1ecd gi\u1ea3 \u0111\u1ecbnh ph\u01b0\u01a1ng ph\u00e1p n\u00e0y. V ti\u00eau chu\u1ea9n, th\u00e9p m\u1ec1m, u\u1ed1n 90 \u0111\u1ed9, u\u1ed1n gi\u00f3. \u1ede trong ph\u1ea1m vi \u0111\u00f3 v\u00e0 \u201cph\u1ecfng \u0111o\u00e1n l\u1ecbch s\u1ef1\u201d ho\u1ea1t \u0111\u1ed9ng h\u1ea7u h\u1ebft th\u1eddi gian.<\/p>\n\n\n\n
Ra ngo\u00e0i ph\u1ea1m vi \u0111\u00f3 v\u00e0 b\u1ea3ng kh\u00f4ng bi\u1ebft b\u1ea1n \u0111\u00e3 r\u1eddi \u0111i.<\/p>\n\n\n\n
V\u1eady \u0111i\u1ec1u g\u00ec thay \u0111\u1ed5i khi t\u1ea5m kim lo\u1ea1i ng\u1eebng n\u1ed5i v\u00e0 b\u1eaft \u0111\u1ea7u b\u1ecb \u00e9p v\u00e0o khu\u00f4n?<\/p>\n\n\n\n
U\u1ed1n \u0111\u00e1y: T\u1ea1i sao \u00e9p v\u1eadt li\u1ec7u \u0111\u1ed9t ng\u1ed9t nh\u00e2n l\u1ef1c y\u00eau c\u1ea7u l\u00ean 3 \u0111\u1ebfn 5 l\u1ea7n<\/h3>\n\n\n\n
V\u1eabn l\u00e0 th\u00e9p kh\u00f4ng g\u1ec9 d\u00e0y 1\/4 inch. V\u1eabn 10 feet. V\u1eabn V 3 inch.<\/p>\n\n\n\n
Trong u\u1ed1n kh\u00f4ng kh\u00ed, ch\u00fang ta \u0111\u00e3 n\u00f3i 174 t\u1ea5n sau khi \u0111i\u1ec1u ch\u1ec9nh v\u1eadt li\u1ec7u.<\/p>\n\n\n\n
B\u00e2y gi\u1edd u\u1ed1n \u0111\u00e1y n\u00f3.<\/p>\n\n\n\n
U\u1ed1n \u0111\u00e1y ngh\u0129a l\u00e0 b\u1ea1n \u00e9p v\u1eadt li\u1ec7u cho \u0111\u1ebfn khi n\u00f3 ho\u00e0n to\u00e0n ti\u1ebfp x\u00fac v\u1edbi g\u00f3c khu\u00f4n. Kh\u00f4ng ph\u1ea3i ba \u0111i\u1ec3m. Ti\u1ebfp x\u00fac li\u00ean t\u1ee5c d\u1ecdc theo c\u1ea3 hai m\u1eb7t khu\u00f4n. B\u1ea1n kh\u00f4ng c\u00f2n ch\u1ec9 l\u00e0m kim lo\u1ea1i ch\u1ea3y n\u1eefa. B\u1ea1n \u0111ang \u00e9p n\u00f3 v\u00e0o h\u00ecnh d\u1ea1ng.<\/p>\n\n\n\n
S\u1ef1 \u00e9p n\u00e0y ti\u00eau t\u1ed1n l\u1ef1c.<\/p>\n\n\n\n
H\u1ec7 s\u1ed1 nh\u00e2n trong ng\u00e0nh th\u01b0\u1eddng ch\u1ea1y t\u1eeb 3\u00d7 \u0111\u1ebfn 5\u00d7 so v\u1edbi m\u1ee9c c\u01a1 b\u1ea3n c\u1ee7a u\u1ed1n kh\u00f4ng kh\u00ed. M\u1ed9t s\u1ed1 b\u1ea3ng d\u1eef li\u1ec7u \u0111\u1ea9y l\u00ean 5.0+ nh\u01b0 m\u1ed9t y\u1ebfu t\u1ed1 l\u1eadp k\u1ebf ho\u1ea1ch. H\u00e3y gi\u1eef b\u1ea3o th\u1ee7 v\u00e0 g\u1ecdi n\u00f3 l\u00e0 3\u00d7 \u0111\u1ed1i v\u1edbi th\u00e9p kh\u00f4ng g\u1ec9.<\/p>\n\n\n\n
174 \u00d7 3 = 522 t\u1ea5n.<\/p>\n\n\n\n
N\u0103m tr\u0103m hai m\u01b0\u01a1i hai.<\/p>\n\n\n\n
B\u1ea1n kh\u00f4ng t\u0103ng d\u1ea7n l\u00ean \u0111\u00f3 t\u1eeb t\u1eeb. B\u1ea1n \u0111\u1ea1t \u0111\u01b0\u1ee3c ngay trong m\u1ed9t c\u00fa \u0111\u1ea1p b\u00e0n \u0111\u1ea1p v\u00ec piston kh\u00f4ng quan t\u00e2m \u0111\u1ebfn gi\u1ea3 \u0111\u1ecbnh c\u1ee7a b\u1ea1n. N\u00f3 ch\u1ec9 theo th\u1ee7y l\u1ef1c.<\/p>\n\n\n\n
V\u00e0 \u0111\u00e2y l\u00e0 l\u00fd do c\u01a1 h\u1ecdc: trong u\u1ed1n kh\u00f4ng kh\u00ed, m\u1ed9t khi \u0111\u1ea1t gi\u1edbi h\u1ea1n ch\u1ea3y \u1edf c\u00e1c s\u1ee3i ngo\u00e0i, ph\u1ea7n c\u00f2n l\u1ea1i c\u1ee7a ti\u1ebft di\u1ec7n theo sau v\u1edbi m\u1ee9c t\u0103ng t\u1ea3i t\u01b0\u01a1ng \u0111\u1ed1i khi\u00eam t\u1ed1n. Trong u\u1ed1n \u0111\u00e1y, khi chi ti\u1ebft ng\u1ed3i v\u00e0o khu\u00f4n, l\u1ef1c c\u1ea3n t\u0103ng v\u1ecdt g\u1ea7n cu\u1ed1i h\u00e0nh tr\u00ecnh. B\u1ea1n \u0111ang n\u00e9n c\u00e1c s\u1ee3i b\u00ean trong v\u00e0 k\u00e9o gi\u00e3n c\u00e1c s\u1ee3i b\u00ean ngo\u00e0i trong khi c\u1ed1 \u0111\u1ecbnh g\u00f3c. \u0110\u01b0\u1eddng cong t\u1ea3i t\u0103ng m\u1ea1nh ngay tr\u01b0\u1edbc khi ti\u1ebfp x\u00fac ho\u00e0n to\u00e0n.<\/p>\n\n\n\n
S\u1ef1 t\u0103ng v\u1ecdt \u0111\u00f3 l\u00e0 n\u01a1i d\u1ee5ng c\u1ee5 h\u1ecfng.<\/p>\n\n\n\n
C\u00f4ng vi\u1ec7c ch\u00ednh x\u00e1c cao \u0111\u00f4i khi c\u1ea7n nhi\u1ec1u l\u1ef1c h\u01a1n so v\u1edbi b\u1ea3ng bi\u1ec3u g\u1ee3i \u00fd \u0111\u1ec3 gi\u1eef g\u00f3c v\u00e0 ki\u1ec3m so\u00e1t \u0111\u1ed9 b\u1eadt l\u1ea1i. Ng\u01b0\u1eddi v\u1eadn h\u00e0nh b\u00f9 b\u1eb1ng c\u00e1ch \u00e9p s\u00e2u h\u01a1n. Trong u\u1ed1n kh\u00f4ng kh\u00ed, \u0111\u00f3 l\u00e0 t\u0103ng d\u1ea7n. Trong u\u1ed1n \u0111\u00e1y, \u0111\u00f3 l\u00e0 t\u0103ng theo c\u1ea5p s\u1ed1 nh\u00e2n g\u1ea7n \u0111\u00e1y. G\u00f3c nh\u1ecdn l\u00e0m t\u00ecnh h\u00ecnh t\u1ec7 h\u01a1n v\u00ec t\u1ea3i d\u1ecbch ra ngo\u00e0i v\u1ec1 ph\u00eda vai khu\u00f4n, t\u1eadp trung \u1ee9ng su\u1ea5t.<\/p>\n\n\n\n
V\u00e0 \u0111i\u1ec1u m\u00e0 anh ta kh\u00f4ng bao gi\u1edd ki\u1ec3m tra l\u00e0 b\u00e0n m\u00e1y.<\/p>\n\n\n\n
M\u00e1y c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u0111\u1ecbnh m\u1ee9c 150 t\u1ea5n t\u1ed5ng, c\u00f3 th\u1ec3 25 t\u1ea5n m\u1ed7i foot ph\u00e2n b\u1ed1 \u0111\u1ec1u. B\u1ea1n v\u1eeba y\u00eau c\u1ea7u t\u01b0\u01a1ng \u0111\u01b0\u01a1ng h\u01a1n 50 t\u1ea5n m\u1ed7i foot. Ngay c\u1ea3 khi th\u1ee7y l\u1ef1c c\u00f3 th\u1ec3 c\u1ed1, khung m\u00e1y s\u1ebd u\u1ed1n, b\u00e0n m\u00e1y b\u1ecb bi\u1ebfn d\u1ea1ng, v\u00e0 m\u1ed9t ng\u00e0y b\u1ea1n nh\u1eadn ra n\u00f3 c\u00f3 m\u1ed9t n\u1ee5 c\u01b0\u1eddi v\u0129nh vi\u1ec5n \u1edf gi\u1eefa.<\/p>\n\n\n\n
T\u1ea5t c\u1ea3 ch\u1ec9 v\u00ec b\u1ea3ng bi\u1ec3u ch\u1ec9 k\u1ec3 c\u00e2u chuy\u1ec7n u\u1ed1n kh\u00f4ng kh\u00ed.<\/p>\n\n\n\n
N\u1ebfu u\u1ed1n \u0111\u00e1y c\u00f3 th\u1ec3 t\u0103ng g\u1ea5p ba t\u1ea3i c\u1ee7a b\u1ea1n, b\u1ea1n ngh\u0129 \u0111i\u1ec1u g\u00ec s\u1ebd x\u1ea3y ra khi b\u1ea1n quy\u1ebft \u0111\u1ecbnh mu\u1ed1n m\u1ed9t b\u00e1n k\u00ednh b\u00ean trong \u201cho\u00e0n h\u1ea3o\u201d?<\/p>\n\n\n\n
D\u1eadp \u0111\u1ed3ng: Vi\u1ec7c \u0111\u1ea1t \u0111\u01b0\u1ee3c b\u00e1n k\u00ednh ho\u00e0n h\u1ea3o c\u00f3 bao gi\u1edd \u0111\u00e1ng v\u1edbi c\u00fa t\u0103ng t\u1ea3i kh\u1ed5ng l\u1ed3 kh\u00f4ng?<\/h3>\n\n\n\n
D\u1eadp \u0111\u1ed3ng kh\u00f4ng c\u00f2n l\u00e0 u\u1ed1n theo ngh\u0129a d\u1ea7m n\u1eefa. N\u00f3 l\u00e0 nghi\u1ec1n c\u00f3 ki\u1ec3m so\u00e1t.<\/p>\n\n\n\n
B\u1ea1n \u00e9p \u0111\u1ea7u ch\u00e0y v\u00e0o v\u1eadt li\u1ec7u \u0111\u1ee7 m\u1ea1nh \u0111\u1ec3 bi\u1ebfn d\u1ea1ng d\u1ebbo to\u00e0n b\u1ed9 \u0111\u1ed9 d\u00e0y t\u1ea1i \u0111\u01b0\u1eddng u\u1ed1n. B\u1ea1n x\u00f3a \u0111\u1ed9 b\u1eadt l\u1ea1i b\u1eb1ng l\u1ef1c th\u00f4. B\u00e1n k\u00ednh b\u00ean trong tr\u1edf th\u00e0nh b\u00e1n k\u00ednh ch\u00e0y v\u00ec b\u1ea1n \u0111\u00e3 l\u00e0m ch\u1ea3y m\u1ecdi th\u1ee9 xuy\u00ean qua ti\u1ebft di\u1ec7n.<\/p>\n\n\n\n
H\u1ec7 s\u1ed1 nh\u00e2n 10\u00d7 so v\u1edbi m\u1ee9c c\u01a1 b\u1ea3n c\u1ee7a u\u1ed1n kh\u00f4ng kh\u00ed kh\u00f4ng ph\u1ea3i l\u00e0 ph\u00f3ng \u0111\u1ea1i trong c\u00e1c h\u01b0\u1edbng d\u1eabn l\u1eadp k\u1ebf ho\u1ea1ch. Ch\u00fang l\u00e0 y\u1ebfu t\u1ed1 s\u1ed1ng c\u00f2n.<\/p>\n\n\n\n
L\u1ea5y v\u00ed d\u1ee5 th\u00e9p kh\u00f4ng g\u1ec9 u\u1ed1n kh\u00f4ng kh\u00ed 174 t\u1ea5n c\u1ee7a ch\u00fang ta.<\/p>\n\n\n\n
174 \u00d7 10 = 1.740 t\u1ea5n.<\/p>\n\n\n\n
\u0110\u00f3 kh\u00f4ng ph\u1ea3i l\u1ed7i \u0111\u00e1nh m\u00e1y.<\/p>\n\n\n\n
Gi\u1edd, tr\u01b0\u1edbc khi b\u1ea1n tranh lu\u1eadn r\u1eb1ng nh\u00f4m s\u1ebd l\u00e0m gi\u1ea3m con s\u1ed1 \u2014 \u0111\u00fang, v\u1eadt li\u1ec7u c\u00f3 \u1ea3nh h\u01b0\u1edfng. M\u1ed9t h\u1ee3p kim m\u1ec1m c\u00f3 th\u1ec3 gi\u1ea3m m\u1ed9t n\u1eeda gi\u00e1 tr\u1ecb c\u01a1 b\u1ea3n tr\u01b0\u1edbc khi b\u1ea1n \u00e1p d\u1ee5ng h\u1ec7 s\u1ed1 ph\u01b0\u01a1ng ph\u00e1p. Nh\u01b0ng h\u1ec7 s\u1ed1 ph\u01b0\u01a1ng ph\u00e1p v\u1eabn \u00e1p d\u1ee5ng. Nghi\u1ec1n kim lo\u1ea1i \u0111\u00f2i h\u1ecfi l\u1ef1c l\u1edbn h\u01a1n nhi\u1ec1u so v\u1edbi u\u1ed1n cong, d\u00f9 n\u00f3 m\u1ec1m \u0111\u1ebfn \u0111\u00e2u.<\/p>\n\n\n\n
V\u1ec1 m\u1eb7t c\u01a1 h\u1ecdc, d\u1eadp \u0111\u1ed3ng xu lo\u1ea1i b\u1ecf s\u1ef1 d\u1ecbch chuy\u1ec3n tr\u1ee5c trung h\u00f2a v\u1ed1n l\u00e0m cho u\u1ed1n kh\u00ed hi\u1ec7u qu\u1ea3. B\u1ea1n \u0111ang bu\u1ed9c bi\u1ebfn d\u1ea1ng d\u1ebbo \u0111\u1ed3ng \u0111\u1ec1u tr\u00ean to\u00e0n b\u1ed9 \u0111\u1ed9 d\u00e0y. \u1ee8ng su\u1ea5t kh\u00f4ng c\u00f2n t\u1eadp trung \u1edf c\u00e1c s\u1ee3i ngo\u00e0i n\u1eefa. N\u00f3 xu\u1ea5t hi\u1ec7n kh\u1eafp n\u01a1i c\u00f9ng l\u00fac. M\u00e1y ch\u1ea5n tr\u1edf th\u00e0nh m\u00e1y r\u00e8n trong m\u1ed9t kho\u1ea3nh kh\u1eafc.<\/p>\n\n\n\n
\u0110\u00f3 l\u00e0 l\u00fd do t\u1ea1i sao d\u1eadp \u0111\u1ed3ng xu hi\u1ebfm khi \u0111\u01b0\u1ee3c d\u00f9ng tr\u00ean m\u00e1y ch\u1ea5n hi\u1ec7n \u0111\u1ea1i, tr\u1eeb v\u1eadt li\u1ec7u m\u1ecfng ho\u1eb7c t\u1ea1o h\u00ecnh \u0111\u1eb7c bi\u1ec7t. Nhu c\u1ea7u l\u1ef1c t\u0103ng v\u1ecdt nhanh \u0111\u1ebfn m\u1ee9c ch\u1ec9 nh\u1eefng chi\u1ec1u d\u00e0i u\u1ed1n r\u1ea5t ng\u1eafn m\u1edbi kh\u1ea3 thi. V\u00e0i inch, c\u00f3 th\u1ec3. Kh\u00f4ng ph\u1ea3i m\u01b0\u1eddi feet.<\/p>\n\n\n\n
V\u1eady khi n\u00e0o th\u00ec \u0111\u00e1ng \u0111\u1ec3 l\u00e0m?<\/p>\n\n\n\n
Khi dung sai y\u00eau c\u1ea7u tuy\u1ec7t \u0111\u1ed1i kh\u00f4ng c\u00f3 \u0111\u1ed9 b\u1eadt l\u1ea1i v\u00e0 chi ti\u1ebft \u0111\u1ee7 ng\u1eafn \u0111\u1ec3 t\u1ed5ng l\u1ef1c v\u1eabn n\u1eb1m trong gi\u1edbi h\u1ea1n c\u1ee7a m\u00e1y v\u00e0 d\u1ee5ng c\u1ee5. \u0110\u00f3 l\u00e0 quy\u1ebft \u0111\u1ecbnh k\u1ef9 thu\u1eadt c\u00f3 \u00fd th\u1ee9c, kh\u00f4ng ph\u1ea3i m\u1eb9o c\u1ee7a ng\u01b0\u1eddi v\u1eadn h\u00e0nh v\u00ec \u201cg\u00f3c \u0111ang ch\u1ed1ng l\u1ea1i t\u00f4i.\u201d<\/p>\n\n\n\n
Chuy\u1ec3n ph\u01b0\u01a1ng ph\u00e1p m\u00e0 kh\u00f4ng t\u00ednh to\u00e1n l\u1ea1i th\u00ec b\u1ea1n kh\u00f4ng ch\u1ec9 \u0111i\u1ec1u ch\u1ec9nh nh\u1ecf. B\u1ea1n \u0111ang nh\u1ea3y sang h\u1ea1ng m\u00e1y kh\u00e1c.<\/p>\n\n\n\n
V\u00e0 ngay c\u1ea3 khi t\u1ed5ng l\u1ef1c t\u00ednh to\u00e1n tr\u00ean gi\u1ea5y v\u1eabn \u1ed5n, ch\u00fang ta ch\u01b0a n\u00f3i v\u1ec1 c\u00e1ch l\u1ef1c \u0111\u00f3 ph\u00e2n b\u1ed1 d\u1ecdc theo b\u00e0n \u2014 v\u00ec 200 t\u1ea5n ph\u00e2n b\u1ed1 \u0111\u1ec1u l\u00e0 m\u1ed9t chuy\u1ec7n, c\u00f2n 200 t\u1ea5n t\u1eadp trung tr\u00ean v\u00e0i inch l\u00e0 c\u00e1ch khi\u1ebfn vai m\u00e1y n\u1ee9t v\u00e0 khu\u00f4n b\u1ecb m\u1ebb.<\/p>\n\n\n\n
Gi\u1edbi h\u1ea1n t\u1ea3i t\u1eadp trung: Khi m\u00e1y s\u1ed1ng s\u00f3t nh\u01b0ng d\u1ee5ng c\u1ee5 c\u1ee7a b\u1ea1n g\u00e3y<\/h2>\n\n\n\n
H\u00e3y h\u00ecnh dung th\u1ebf n\u00e0y: m\u00e1y ch\u1ea5n 300 t\u1ea5n, d\u00e0i 12 feet. B\u1ea1n ch\u1ea1y m\u1ed9t u\u1ed1n kh\u00ed d\u00e0i 12 feet \u1edf 180 t\u1ea5n. M\u00e1y ch\u1eb3ng h\u1ec1 h\u1ea5n. Th\u1ee7y l\u1ef1c \u1ed5n \u0111\u1ecbnh. Khung v\u1eabn th\u1eb3ng.<\/p>\n\n\n\n
C\u00f4ng vi\u1ec7c ti\u1ebfp theo l\u00e0 m\u1ed9t gi\u00e1 \u0111\u1ee1 d\u00e0i 12 inch b\u1eb1ng t\u1ea5m d\u00e0y 3\/8 inch. M\u00e1y t\u00ednh n\u00f3i t\u1ed5ng l\u1ef1c 90 t\u1ea5n. Th\u1ea5p h\u01a1n nhi\u1ec1u so v\u1edbi 300. B\u1ea1n m\u1ec9m c\u01b0\u1eddi, nh\u1ea5n b\u00e0n \u0111\u1ea1p.<\/p>\n\n\n\n
C\u1eef ch\u00e0y h\u1ea1 xu\u1ed1ng.<\/p>\n\n\n\n
M\u00e1y s\u1ed1ng s\u00f3t. Khu\u00f4n th\u00ec kh\u00f4ng.<\/p>\n\n\n\n
\u0110\u00e2y l\u00e0 l\u00fd do. 90 t\u1ea5n \u0111\u00f3 kh\u00f4ng c\u00f2n ph\u00e2n b\u1ed1 tr\u00ean 12 feet n\u1eefa. N\u00f3 b\u1ecb d\u1ed3n v\u00e0o m\u1ed9t foot. 90 t\u1ea5n m\u1ed7i foot. N\u1ebfu khu\u00f4n c\u1ee7a b\u1ea1n \u0111\u01b0\u1ee3c \u0111\u1ecbnh m\u1ee9c 80 t\u1ea5n m\u1ed7i m\u00e9t \u2014 kho\u1ea3ng 24 t\u1ea5n m\u1ed7i foot \u2014 b\u1ea1n v\u1eeba y\u00eau c\u1ea7u n\u00f3 ch\u1ecbu g\u1ea7n g\u1ea5p b\u1ed1n l\u1ea7n gi\u1edbi h\u1ea1n. M\u00e1y ch\u1ea5n v\u1eabn \u1ed5n v\u00ec t\u1ed5ng l\u1ef1c h\u1ec7 th\u1ed1ng th\u1ea5p. D\u1ee5ng c\u1ee5 h\u1ecfng v\u00ec n\u00f3 ch\u1ec9 quan t\u00e2m \u0111\u1ebfn m\u1eadt \u0111\u1ed9 t\u1ea3i.<\/p>\n\n\n\n
T\u1ed5ng l\u1ef1c gi\u1eef cho khung m\u00e1y s\u1ed1ng. L\u1ef1c m\u1ed7i foot gi\u1eef cho d\u1ee5ng c\u1ee5 nguy\u00ean v\u1eb9n.<\/p>\n\n\n\n
V\u00e0 b\u1ea3ng tra g\u1ea7n nh\u01b0 kh\u00f4ng bao gi\u1edd nh\u1ea5n m\u1ea1nh s\u1ef1 kh\u00e1c bi\u1ec7t \u0111\u00f3 cho b\u1ea1n.<\/p>\n\n\n\n
V\u1eady l\u1ef1c th\u1ef1c s\u1ef1 di chuy\u1ec3n d\u1ecdc theo b\u00e0n th\u1ebf n\u00e0o khi b\u1ea1n t\u1eadp trung n\u00f3?<\/p>\n\n\n\n
Ph\u00e2n b\u1ed1 l\u1ef1c d\u1ecdc theo thanh \u00e9p: T\u1ea1i sao t\u1ea3i \u1edf gi\u1eefa \u00e2m th\u1ea7m ph\u00e1 h\u1ee7y m\u00e1y<\/h3>\n\n\n\n
M\u00e1y ch\u1ea5n 200 t\u1ea5n kh\u00f4ng ph\u00e2n ph\u1ed1i 200 t\u1ea5n \u0111\u1ec1u kh\u1eafp b\u00e0n. H\u00e3y xem b\u1ea5t k\u1ef3 b\u1ea3ng t\u1ea3i c\u1ee7a nh\u00e0 s\u1ea3n xu\u1ea5t n\u00e0o v\u00e0 b\u1ea1n s\u1ebd th\u1ea5y: t\u1ea3i ph\u00e2n b\u1ed1 to\u00e0n chi\u1ec1u d\u00e0i c\u00f3 th\u1ec3 g\u1ea7n b\u1eb1ng \u0111\u1ecbnh m\u1ee9c, nh\u01b0ng kh\u1ea3 n\u0103ng t\u1ea3i \u1edf gi\u1eefa gi\u1ea3m \u2014 \u0111\u00f4i khi ch\u1ec9 c\u00f2n 50\u201370% c\u00f4ng su\u1ea5t \u0111\u1ecbnh m\u1ee9c \u2014 v\u00ec thanh \u00e9p v\u00e0 b\u00e0n b\u1ecb u\u1ed1n.<\/p>\n\n\n\n
Th\u00e9p lu\u00f4n u\u1ed1n cong. Lu\u00f4n lu\u00f4n.<\/p>\n\n\n\n
D\u01b0\u1edbi t\u1ea3i tr\u1ecdng l\u1edbn \u1edf gi\u1eefa, c\u1ea7n \u00e9p cong vi m\u00f4. B\u1ec7 cong theo h\u01b0\u1edbng ng\u01b0\u1ee3c l\u1ea1i. B\u1ea1n s\u1ebd c\u00f3 hi\u1ec7u \u1ee9ng h\u01a1i cong v\u1ed3ng d\u00f9 mu\u1ed1n hay kh\u00f4ng. M\u1ed9t b\u00e1o c\u00e1o \u0111\u1ed9 ch\u00ednh x\u00e1c \u0111o \u0111\u01b0\u1ee3c ch\u1ec9 0,06 mm sai l\u1ec7ch tr\u00ean chi\u1ec1u d\u00e0i b\u00e0n 3200 mm. \u0110\u1ed9 cong nh\u1ecf \u0111\u00f3 chuy\u1ec3n th\u00e0nh kho\u1ea3ng 0,17\u00b0 sai l\u1ec7ch g\u00f3c tr\u00ean to\u00e0n b\u1ed9 chi ti\u1ebft.<\/p>\n\n\n\n
Nghe c\u00f3 v\u1ebb kh\u00f4ng nhi\u1ec1u cho \u0111\u1ebfn khi b\u1ea1n ph\u1ea3i \u0111\u1ea1t dung sai n\u1eeda \u0111\u1ed9 v\u00e0 ch\u00eam khu\u00f4n nh\u01b0 m\u1ed9t ng\u01b0\u1eddi tuy\u1ec7t v\u1ecdng.<\/p>\n\n\n\n
Gi\u1edd h\u00e3y c\u1ed9ng th\u00eam ph\u01b0\u01a1ng ph\u00e1p v\u00e0o \u0111\u00f3. U\u1ed1n \u0111\u00e1y ho\u1eb7c d\u1eadp \u0111\u1ed3ng ti\u1ec1n l\u00e0m t\u0103ng l\u1ef1c \u1edf cu\u1ed1i h\u00e0nh tr\u00ecnh. C\u00fa t\u0103ng l\u1ef1c n\u00e0y x\u1ea3y ra \u0111\u00fang l\u00fac \u0111\u1ed9 cong l\u1edbn nh\u1ea5t. V\u00ec v\u1eady kh\u00f4ng ch\u1ec9 t\u0103ng t\u1ed5ng l\u1ef1c \u00e9p v\u1edbi h\u1ec7 s\u1ed1 ph\u01b0\u01a1ng ph\u00e1p, b\u1ea1n c\u00f2n khu\u1ebfch \u0111\u1ea1i \u1ee9ng su\u1ea5t c\u1ee5c b\u1ed9 \u0111\u00fang n\u01a1i k\u1ebft c\u1ea5u y\u1ebfu nh\u1ea5t \u2014 gi\u1eefa nh\u1ecbp.<\/p>\n\n\n\n
T\u1ea3i tr\u1ecdng t\u1eadp trung \u1edf gi\u1eefa kh\u00f4ng ch\u1ec9 \u0111e d\u1ecda h\u1ecfng h\u00f3c nghi\u00eam tr\u1ecdng. N\u00f3 t\u1eeb t\u1eeb l\u00e0m m\u1ea5t \u0111\u1ed9 ch\u00ednh x\u00e1c c\u1ee7a m\u00e1y. B\u1ec7 b\u1ecb bi\u1ebfn d\u1ea1ng c\u1ed1 \u0111\u1ecbnh. C\u1ea7n \u00e9p ph\u00e1t tri\u1ec3n \u0111\u1ed9 l\u1ec7ch. M\u1ed9t ng\u00e0y n\u00e0o \u0111\u00f3, c\u00e1c chi ti\u1ebft c\u1ee7a b\u1ea1n lu\u00f4n m\u1edf \u1edf gi\u1eefa v\u00e0 ch\u1eb7t \u1edf hai \u0111\u1ea7u.<\/p>\n\n\n\n
\u0110i\u1ec1u anh ta kh\u00f4ng bao gi\u1edd ki\u1ec3m tra l\u00e0 m\u1eb7t b\u00e0n.<\/p>\n\n\n\n
Nh\u01b0ng ngay c\u1ea3 khi khung m\u00e1y ch\u1ecbu \u0111\u01b0\u1ee3c nhi\u1ec1u n\u0103m l\u1ea1m d\u1ee5ng nh\u01b0 v\u1eady, khu\u00f4n c\u1ee7a b\u1ea1n th\u00ec kh\u00f4ng. N\u00f3 ch\u1ec9 c\u1ea7n m\u1ed9t c\u00fa \u0111\u00e1nh sai.<\/p>\n\n\n\n
\u0110i\u1ec1u n\u00e0y d\u1eabn \u0111\u1ebfn sai l\u1ea7m t\u00f4i th\u1ea5y nhi\u1ec1u h\u01a1n b\u1ea5t k\u1ef3 sai l\u1ea7m n\u00e0o kh\u00e1c.<\/p>\n\n\n\n
B\u1ea1n c\u00f3 v\u00f4 t\u00ecnh v\u01b0\u1ee3t qu\u00e1 t\u1ea3i t\u1ed1i \u0111a tr\u00ean m\u1ed7i foot khi u\u1ed1n ng\u1eafn v\u00e0 d\u00e0y kh\u00f4ng?<\/h3>\n\n\n\n
C\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t khu\u00f4n \u0111\u00f3ng d\u1ea5u th\u00f4ng s\u1ed1 nh\u01b0 \u201c80 t\u1ea5n m\u1ed7i m\u00e9t\u201d l\u00e0 c\u00f3 l\u00fd do. \u0110\u00f3 kh\u00f4ng ph\u1ea3i \u0111\u1ec3 trang tr\u00ed. \u0110\u00f3 l\u00e0 gi\u1edbi h\u1ea1n ch\u1ea3y c\u1ee7a th\u00e9p d\u1ee5ng c\u1ee5 tr\u00ean ti\u1ebft di\u1ec7n c\u1ee7a n\u00f3.<\/p>\n\n\n\n
H\u00e3y l\u00e0m ph\u00e9p t\u00ednh nhanh tr\u00ean gi\u1ea5y.<\/p>\n\n\n\n
B\u01b0\u1edbc 1: T\u00ednh \u0111\u00fang t\u1ed5ng l\u1ef1c \u00e9p \u2014 bao g\u1ed3m h\u1ec7 s\u1ed1 v\u1eadt li\u1ec7u v\u00e0 ph\u01b0\u01a1ng ph\u00e1p u\u1ed1n.<\/p>\n\n\n\n
B\u01b0\u1edbc 2: Chia cho chi\u1ec1u d\u00e0i u\u1ed1n th\u1ef1c t\u1ebf t\u00ednh b\u1eb1ng foot.<\/p>\n\n\n\n
B\u01b0\u1edbc 3: So s\u00e1nh con s\u1ed1 \u0111\u00f3 v\u1edbi th\u00f4ng s\u1ed1 t\u1ea5n tr\u00ean m\u1ed7i foot c\u1ee7a khu\u00f4n.<\/p>\n\n\n\n
Gi\u1ea3 s\u1eed ph\u00e9p t\u00ednh u\u1ed1n \u0111\u00e1y \u0111\u00e3 hi\u1ec7u ch\u1ec9nh cho ra 120 t\u1ea5n cho m\u1ed9t chi ti\u1ebft d\u00e0i 10 inch. M\u01b0\u1eddi inch l\u00e0 0,83 foot.<\/p>\n\n\n\n
120 \u00f7 0,83 \u2248 145 t\u1ea5n tr\u00ean m\u1ed7i foot.<\/p>\n\n\n\n
N\u1ebfu khu\u00f4n c\u1ee7a b\u1ea1n \u0111\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1 80 t\u1ea5n m\u1ed7i m\u00e9t, th\u00ec \u0111\u00f3 kho\u1ea3ng 24 t\u1ea5n tr\u00ean m\u1ed7i foot.<\/p>\n\n\n\n
B\u1ea1n kh\u00f4ng ch\u1ec9 v\u01b0\u1ee3t m\u1ed9t ch\u00fat. B\u1ea1n v\u01b0\u1ee3t g\u1ea5p s\u00e1u l\u1ea7n.<\/p>\n\n\n\n
\u0110\u1eebng l\u00e0 ng\u01b0\u1eddi n\u00f3i, \u201cNh\u01b0ng ch\u1ec9 c\u00f3 120 t\u1ea5n v\u00e0 \u0111\u00e2y l\u00e0 m\u00e1y \u00e9p 250 t\u1ea5n.\u201d \u0110\u00f3 l\u00e0 c\u00e1ch vai khu\u00f4n b\u1ecb m\u1ebb v\u00e0 ch\u00e0y b\u1ecb ph\u00ecnh. H\u1ec7 th\u1ed1ng th\u1ee7y l\u1ef1c c\u1ee7a m\u00e1y \u00e9p th\u1ea5y 120. Vai khu\u00f4n th\u1ea5y 145 t\u1ea5n tr\u00ean m\u1ed7i foot t\u1eadp trung t\u1ea1i hai \u0111\u01b0\u1eddng ti\u1ebfp x\u00fac.<\/p>\n\n\n\n
V\u00e0 u\u1ed1n \u0111\u00e1y d\u1ecbch t\u1ea3i ra ngo\u00e0i v\u1ec1 ph\u00eda vai khu\u00f4n. Khu\u00f4n g\u00f3c nh\u1ecdn l\u00e0m \u0111i\u1ec1u \u0111\u00f3 t\u1ec7 h\u01a1n. Di\u1ec7n t\u00edch ti\u1ebfp x\u00fac thu h\u1eb9p. \u1ee8ng su\u1ea5t t\u0103ng. Th\u00e9p d\u1ee5ng c\u1ee5 kh\u00f4ng \u0111\u01b0a ra ti\u1ebfng c\u1ea3nh b\u00e1o. N\u00f3 g\u00e3y.<\/p>\n\n\n\n
B\u1ea1n s\u1ebd nghe ti\u1ebfng n\u1ee9t nh\u01b0 s\u00fang .22 n\u1ed5 b\u00ean trong m\u00e1y.<\/p>\n\n\n\n
\u0110\u00f3 l\u00e0 sai l\u1ea7m $10,000 ch\u1ec9 trong m\u1ed9t c\u00fa \u0111\u1ea1p b\u00e0n \u0111\u1ea1p.<\/p>\n\n\n\n
C\u00e1c m\u00e1y t\u00ednh tr\u1ecdng t\u1ea3i hi\u1ec7n \u0111\u1ea1i c\u00f3 th\u1ec3 cung c\u1ea5p cho b\u1ea1n con s\u1ed1 l\u1ef1c t\u1ed5ng ch\u00ednh x\u00e1c khi b\u1ea1n nh\u1eadp \u0111\u00fang d\u1eef li\u1ec7u. Ch\u00fang kh\u00f4ng ph\u1ea3i l\u00e0 k\u1ebb th\u00f9. \u0110i\u1ec3m m\u00f9 l\u00e0 ch\u00fang xu\u1ea5t ra tr\u1ecdng t\u1ea3i h\u1ec7 th\u1ed1ng, kh\u00f4ng ph\u1ea3i m\u1eadt \u0111\u1ed9 t\u1ea3i. Ch\u00fang gi\u1ea3 \u0111\u1ecbnh r\u1eb1ng b\u1ea1n s\u1ebd t\u1ef1 ki\u1ec3m tra th\u00f4ng s\u1ed1 d\u1ee5ng c\u1ee5.<\/p>\n\n\n\n
B\u1ea1n c\u00f3 l\u00e0m v\u1eady kh\u00f4ng?<\/p>\n\n\n\n
Bi\u00ean \u0111\u1ed9 an to\u00e0n 20%: T\u1ef7 l\u1ec7 ph\u1ea7n tr\u0103m c\u1ee7a c\u00f4ng su\u1ea5t t\u1ed1i \u0111a m\u00e0 b\u1ea1n th\u1ef1c s\u1ef1 n\u00ean nh\u1eafm t\u1edbi<\/h3>\n\n\n\n
Ngay c\u1ea3 khi ph\u00e9p t\u00ednh c\u1ee7a b\u1ea1n cho th\u1ea5y b\u1ea1n n\u1eb1m trong m\u1ee9c t\u1ea5n tr\u00ean m\u1ed7i foot \u0111\u01b0\u1ee3c \u0111\u1ecbnh m\u1ee9c c\u1ee7a khu\u00f4n, \u0111\u1eebng ch\u1ea1y \u1edf m\u1ee9c 100%.<\/p>\n\n\n\n
C\u00e1c th\u00f4ng s\u1ed1 \u0111\u01b0\u1ee3c d\u1ef1a tr\u00ean s\u1ef1 c\u0103n ch\u1ec9nh l\u00fd t\u01b0\u1edfng, v\u1eadt li\u1ec7u ho\u00e0n h\u1ea3o, kh\u00f4ng t\u1ea3i l\u1ec7ch t\u00e2m, kh\u00f4ng c\u1ed9ng d\u1ed3n bi\u1ebfn d\u1ea1ng t\u1eeb b\u00e0n b\u1ecb m\u00f2n. C\u00e1c x\u01b0\u1edfng th\u1ef1c t\u1ebf kh\u00f4ng ph\u1ea3i \u0111i\u1ec1u ki\u1ec7n l\u00fd t\u01b0\u1edfng. \u0110\u1ed9 b\u1ec1n k\u00e9o c\u1ee7a v\u1eadt li\u1ec7u thay \u0111\u1ed5i theo t\u1eebng m\u1ebb nhi\u1ec7t. Ng\u01b0\u1eddi v\u1eadn h\u00e0nh th\u01b0\u1eddng xuy\u00ean \u00e9p s\u00e2u h\u01a1n \u0111\u1ec3 \u0111\u1ea1t g\u00f3c. \u0110\u1ed9 cong kh\u00f4ng ph\u1ea3i l\u00fac n\u00e0o c\u0169ng \u0111\u01b0\u1ee3c \u0111i\u1ec1u ch\u1ec9nh chu\u1ea9n.<\/p>\n\n\n\n
C\u00f4ng vi\u1ec7c ch\u00ednh x\u00e1c cao \u0111\u00f4i khi c\u1ea7n nhi\u1ec1u l\u1ef1c h\u01a1n so v\u1edbi b\u1ea3ng g\u1ee3i \u00fd \u0111\u1ec3 gi\u1eef g\u00f3c v\u00e0 ki\u1ec3m so\u00e1t \u0111\u1ed9 \u0111\u00e0n h\u1ed3i. \u0110i\u1ec1u \u0111\u00f3 c\u00f3 ngh\u0129a l\u00e0 ng\u01b0\u1eddi v\u1eadn h\u00e0nh theo b\u1ea3n n\u0103ng s\u1ebd \u00e9p s\u00e2u h\u01a1n. L\u1ef1c t\u0103ng nhanh khi g\u1ea7n \u0111\u00e1y.<\/p>\n\n\n\n
V\u00ec v\u1eady, k\u1ef7 lu\u1eadt \u1edf \u0111\u00e2y l\u00e0: nh\u1eafm kh\u00f4ng qu\u00e1 80% c\u1ee7a m\u1ee9c t\u1ea5n tr\u00ean m\u1ed7i foot c\u1ee7a khu\u00f4n v\u00e0 kh\u00f4ng qu\u00e1 80% c\u1ee7a c\u00f4ng su\u1ea5t t\u1ea3i trung t\u00e2m c\u1ee7a m\u00e1y cho v\u1ecb tr\u00ed \u0111\u00f3 tr\u00ean b\u00e0n.<\/p>\n\n\n\n
N\u1ebfu khu\u00f4n \u0111\u01b0\u1ee3c \u0111\u1ecbnh m\u1ee9c 24 t\u1ea5n m\u1ed7i foot, h\u00e3y l\u1eadp k\u1ebf ho\u1ea1ch cho 19.<\/p>\n\n\n\n
N\u1ebfu b\u1ea3ng t\u1ea3i trung t\u00e2m c\u1ee7a m\u00e1y cho bi\u1ebft t\u1ed1i \u0111a 140 t\u1ea5n \u1edf gi\u1eefa, h\u00e3y l\u1eadp k\u1ebf ho\u1ea1ch cho 110.<\/p>\n\n\n\n
Bi\u00ean \u0111\u1ed9 20% \u0111\u00f3 h\u1ea5p th\u1ee5 s\u1ef1 bi\u1ebfn \u0111\u1ed5i v\u1eadt li\u1ec7u, l\u1ed7i thi\u1ebft l\u1eadp, v\u00e0 th\u1ef1c t\u1ebf r\u1eb1ng c\u1ea7n \u00e9p kh\u00f4ng d\u1eebng l\u1ea1i ngay l\u1eadp t\u1ee9c. N\u00f3 gi\u00fap b\u1ea1n k\u00e9o d\u00e0i tu\u1ed5i th\u1ecd d\u1ee5ng c\u1ee5. N\u00f3 gi\u00fap b\u1ea1n duy tr\u00ec s\u1ef1 nh\u1ea5t qu\u00e1n. N\u00f3 gi\u1eef cho c\u1ea7n \u00e9p kh\u00f4ng tr\u1edf th\u00e0nh m\u1ed9t h\u1ed1i ti\u1ebfc \u0111i\u1ec3m-kh\u00f4ng-th\u1ec3-quay-l\u1ea1i.<\/p>\n\n\n\n
B\u1edfi v\u00ec m\u1ed9t khi c\u1ea7n \u00e9p h\u1ea1 xu\u1ed1ng, v\u1eadt l\u00fd kh\u00f4ng th\u01b0\u01a1ng l\u01b0\u1ee3ng.<\/p>\n\n\n\n
V\u00ec v\u1eady, tr\u01b0\u1edbc khi ph\u1ea7n ti\u1ebfp theo \u0111\u01b0a cho b\u1ea1n m\u1ed9t khung quy\u1ebft \u0111\u1ecbnh r\u00f5 r\u00e0ng, h\u00e3y t\u1ef1 h\u1ecfi m\u1ed9t \u0111i\u1ec1u \u0111\u01a1n gi\u1ea3n: khi b\u1ea1n nh\u00ecn v\u00e0o m\u1ed9t con s\u1ed1 tr\u1ecdng t\u1ea3i, b\u1ea1n \u0111ang th\u1ea5y l\u1ef1c t\u1ed5ng \u2014 hay l\u1ef1c tr\u00ean m\u1ed7i foot th\u1ef1c s\u1ef1 quy\u1ebft \u0111\u1ecbnh li\u1ec7u th\u00e9p s\u1ebd u\u1ed1n\u2026 hay g\u00e3y?<\/p>\n\n\n\n
Khung Quy\u1ebft \u0110\u1ecbnh Th\u1ef1c Ti\u1ec5n: T\u1eeb B\u1ea3ng \u0111\u1ebfn Thi\u1ebft L\u1eadp \u0110\u01b0\u1ee3c X\u00e1c Minh<\/h2>\n\n\n\n
B\u1ea1n mu\u1ed1n m\u1ed9t khung t\u1eebng b\u01b0\u1edbc cho bi\u1ebft, tr\u01b0\u1edbc khi b\u1ea1n ch\u1ea1m v\u00e0o b\u00e0n \u0111\u1ea1p, li\u1ec7u vi\u1ec7c u\u1ed1n c\u00f3 an to\u00e0n cho m\u00e1y v\u00e0 d\u1ee5ng c\u1ee5 hay kh\u00f4ng.<\/p>\n\n\n\n
T\u1ed1t. B\u1edfi v\u00ec hy v\u1ecdng kh\u00f4ng ph\u1ea3i l\u00e0 chi\u1ebfn l\u01b0\u1ee3c thi\u1ebft l\u1eadp.<\/p>\n\n\n\n
Ch\u00fang ta \u0111\u00e3 x\u00e1c \u0111\u1ecbnh r\u1eb1ng m\u1eadt \u0111\u1ed9 t\u1ea3i \u2014 t\u1ea5n tr\u00ean m\u1ed7i foot \u2014 l\u00e0 th\u1ee9 gi\u1ebft d\u1ee5ng c\u1ee5 v\u00e0 t\u1eeb t\u1eeb l\u00e0m gi\u1ea3m \u0111\u1ed9 ch\u00ednh x\u00e1c c\u1ee7a khung. V\u00ec v\u1eady khung n\u00e0y ph\u1ea3i bu\u1ed9c b\u1ea1n suy ngh\u0129 theo th\u1ee9 t\u1ef1 \u0111\u00f3: b\u1ea3ng \u2192 l\u1ef1c th\u1ef1c t\u1ebf \u2192 t\u1ea3i tr\u00ean m\u1ed7i foot \u2192 gi\u1edbi h\u1ea1n m\u00e1y \u2192 bi\u00ean \u0111\u1ed9 an to\u00e0n \u2192 x\u00e1c minh v\u1eadt l\u00fd. B\u1ecf s\u00f3t m\u1ed9t b\u01b0\u1edbc, v\u00e0 b\u1ea1n s\u1ebd l\u00e0 ng\u01b0\u1eddi gi\u1ea3i th\u00edch v\u1ec1 m\u1ed9t khu\u00f4n b\u1ecb g\u00e3y cho ch\u1ee7 x\u01b0\u1edfng.<\/p>\n\n\n\n
\u0110\u00e2y l\u00e0 c\u00e1ch b\u1ea1n ng\u1eebng \u0111o\u00e1n v\u00e0 b\u1eaft \u0111\u1ea7u x\u00e1c minh.<\/p>\n\n\n\n
C\u00e1ch s\u1eed d\u1ee5ng b\u1ea3ng chung nh\u01b0 m\u1ed9t b\u01b0\u1edbc ki\u1ec3m tra nhanh, kh\u00f4ng ph\u1ea3i th\u00f4ng s\u1ed1 cu\u1ed1i c\u00f9ng<\/h3>\n\n\n\n
B\u1ea3ng kh\u00f4ng ph\u1ea3i l\u00e0 c\u00e2u tr\u1ea3 l\u1eddi. N\u00f3 l\u00e0 m\u00e1y ph\u00e1t hi\u1ec7n n\u00f3i d\u1ed1i.<\/p>\n\n\n\n
B\u01b0\u1edbc m\u1ed9t: l\u1ea5y tr\u1ecdng t\u1ea3i chung t\u1eeb b\u1ea3ng cho \u0111\u1ed9 d\u00e0y v\u00e0 k\u00edch m\u1edf V c\u1ee7a b\u1ea1n. \u0110i\u1ec1u \u0111\u00f3 cho b\u1ea1n m\u1ed9t m\u1ee9c c\u01a1 b\u1ea3n t\u00ednh b\u1eb1ng t\u1ea5n tr\u00ean m\u1ed7i foot cho th\u00e9p m\u1ec1m, u\u1ed1n kh\u00f4ng ch\u1ea1m, \u0111i\u1ec1u ki\u1ec7n l\u00fd t\u01b0\u1edfng.<\/p>\n\n\n\n
B\u00e2y gi\u1edd h\u00e3y l\u00e0m m\u1ed9t so s\u00e1nh \u0111\u01a1n gi\u1ea3n.<\/p>\n\n\n\n
Con s\u1ed1 \u0111\u00f3 c\u00f3 n\u1eb1m c\u00f9ng \u201ckhu ph\u1ed1\u201d v\u1edbi c\u00f4ng su\u1ea5t ph\u00e2n ph\u1ed1i c\u1ee7a m\u00e1y b\u1ea1n kh\u00f4ng?<\/p>\n\n\n\n
N\u1ebfu bi\u1ec3u \u0111\u1ed3 ghi 12 t\u1ea5n m\u1ed7i foot v\u00e0 b\u1ea1n d\u1ef1 \u0111\u1ecbnh u\u1ed1n 10 foot, th\u00ec t\u1ed5ng c\u1ed9ng l\u00e0 120 t\u1ea5n. Tr\u00ean m\u1ed9t m\u00e1y 130 t\u1ea5n, \u0111i\u1ec1u \u0111\u00f3 \u0111\u00e3 g\u1ea7n h\u1ebft s\u1ee9c tr\u01b0\u1edbc khi ch\u00fang ta \u0111i\u1ec1u ch\u1ec9nh cho v\u1eadt li\u1ec7u ho\u1eb7c ph\u01b0\u01a1ng ph\u00e1p th\u1ef1c t\u1ebf. Bi\u1ec3u \u0111\u1ed3 v\u1eeba cho b\u1ea1n bi\u1ebft c\u00f4ng vi\u1ec7c n\u00e0y \u0111ang g\u1ea7n s\u00e1t gi\u1edbi h\u1ea1n.<\/p>\n\n\n\n
Nh\u01b0ng \u0111\u00e2y l\u00e0 ch\u1ed7 c\u00e1c v\u1eadn h\u00e0nh vi\u00ean tr\u1edf n\u00ean c\u1ea9u th\u1ea3. H\u1ecd d\u1eebng l\u1ea1i \u1edf \u0111\u00f3.<\/p>\n\n\n\n
Bi\u1ec3u \u0111\u1ed3 gi\u1ea3 \u0111\u1ecbnh \u0111\u1ed9 d\u00e0y danh ngh\u0129a. H\u1ea7u h\u1ebft t\u1ea5m th\u00e9p \u0111\u1ec1u d\u00e0y h\u01a1n. D\u00e0y h\u01a1n t\u1eeb n\u0103m \u0111\u1ebfn m\u01b0\u1eddi l\u0103m ph\u1ea7n tr\u0103m l\u00e0 ph\u1ed5 bi\u1ebfn. N\u1ebfu b\u1ea1n kh\u00f4ng \u0111o \u0111\u1ed9 d\u00e0y th\u1ef1c t\u1ebf tr\u01b0\u1edbc khi t\u00ednh to\u00e1n, b\u1ea1n \u0111\u00e3 \u0111\u01b0a l\u1ed7i v\u00e0o ngay tr\u01b0\u1edbc khi ph\u00e9p t\u00ednh b\u1eaft \u0111\u1ea7u. \u0110\u1eebng l\u00e0 ng\u01b0\u1eddi tin nh\u00e3n tr\u00ean gi\u00e1 h\u01a1n l\u00e0 c\u00e1i th\u01b0\u1edbc c\u1eb7p trong tay.<\/p>\n\n\n\n
V\u00ec v\u1eady, bi\u1ec3u \u0111\u1ed3 ch\u1ec9 tr\u1ea3 l\u1eddi m\u1ed9t c\u00e2u h\u1ecfi duy nh\u1ea5t: \u201cC\u00f4ng vi\u1ec7c n\u00e0y c\u00f3 r\u00f5 r\u00e0ng l\u00e0 b\u1ea5t kh\u1ea3 thi kh\u00f4ng?\u201d<\/p>\n\n\n\n
N\u1ebfu n\u00f3 v\u01b0\u1ee3t qua b\u00e0i ki\u1ec3m tra nhanh \u0111\u00f3, th\u00ec b\u1ea1n th\u1ef1c s\u1ef1 c\u1ea7n x\u00e1c minh g\u00ec ti\u1ebfp theo?<\/p>\n\n\n\n
M\u1ed9t danh s\u00e1ch ki\u1ec3m tra l\u1eb7p l\u1ea1i \u0111\u1ec3 x\u00e1c nh\u1eadn m\u00e1y u\u1ed1n v\u00e0 d\u1ee5ng c\u1ee5 c\u1ee7a b\u1ea1n c\u00f3 th\u1ec3 x\u1eed l\u00fd c\u00f4ng vi\u1ec7c m\u1ed9t c\u00e1ch an to\u00e0n<\/h3>\n\n\n\n
\u0110\u00e2y l\u00e0 ph\u1ea7n k\u1ef7 lu\u1eadt. C\u00f9ng th\u1ee9 t\u1ef1, m\u1ecdi c\u00f4ng vi\u1ec7c.<\/p>\n\n\n\n
1. \u0110o th\u1ef1c t\u1ebf.<\/strong> \u0110\u1ed9 d\u00e0y th\u1ef1c t\u1ebf. Chi\u1ec1u d\u00e0i u\u1ed1n th\u1ef1c t\u1ebf. Lo\u1ea1i v\u1eadt li\u1ec7u th\u1ef1c t\u1ebf. N\u1ebfu b\u1ea1n chuy\u1ec3n t\u1eeb A36 sang 304 m\u00e0 kh\u00f4ng thay \u0111\u1ed5i h\u1ec7 s\u1ed1 nh\u00e2n, b\u1ea1n kh\u00f4ng t\u00ednh to\u00e1n \u2014 b\u1ea1n \u0111\u00e3 gi\u1ea3 \u0111\u1ecbnh.<\/p>\n\n\n\n
2. T\u00ednh to\u00e1n t\u1ed5ng l\u1ef1c n\u00e9n \u0111\u00e3 \u0111i\u1ec1u ch\u1ec9nh.<\/strong> T\u1ea5n c\u01a1 b\u1ea3n m\u1ed7i foot \u00d7 h\u1ec7 s\u1ed1 v\u1eadt li\u1ec7u \u00d7 h\u1ec7 s\u1ed1 ph\u01b0\u01a1ng ph\u00e1p \u00d7 chi\u1ec1u d\u00e0i u\u1ed1n. U\u1ed1n kh\u00f4ng ch\u1ea1m l\u00e0 c\u01a1 s\u1edf c\u1ee7a b\u1ea1n. U\u1ed1n \u0111\u00e1y ho\u1eb7c d\u1eadp \u0111\u1ed3ng? Nh\u00e2n t\u01b0\u01a1ng \u1ee9ng. C\u00f4ng vi\u1ec7c ch\u00ednh x\u00e1c cao \u0111\u00f4i khi c\u1ea7n nhi\u1ec1u l\u1ef1c h\u01a1n bi\u1ec3u \u0111\u1ed3 g\u1ee3i \u00fd \u0111\u1ec3 gi\u1eef g\u00f3c v\u00e0 ki\u1ec3m so\u00e1t \u0111\u1ed9 \u0111\u00e0n h\u1ed3i \u2014 v\u00e0 l\u1ef1c b\u1ed5 sung \u0111\u00f3 ph\u1ea3i l\u00e0 c\u00f3 ch\u1ee7 \u00fd, kh\u00f4ng ph\u1ea3i ng\u1eabu nhi\u00ean.<\/p>\n\n\n\n
B\u00e2y gi\u1edd b\u1ea1n c\u00f3 t\u1ed5ng l\u1ef1c n\u00e9n c\u1ee7a h\u1ec7 th\u1ed1ng.<\/p>\n\n\n\n
3. Chuy\u1ec3n \u0111\u1ed5i sang m\u1eadt \u0111\u1ed9 t\u1ea3i.<\/strong> T\u1ed5ng t\u1ea5n \u00f7 chi\u1ec1u d\u00e0i u\u1ed1n th\u1ef1c t\u1ebf (t\u00ednh b\u1eb1ng foot). \u0110\u00f3 l\u00e0 con s\u1ed1 m\u00e0 khu\u00f4n c\u1ea3m nh\u1eadn. Kh\u00f4ng ph\u1ea3i m\u00e1y. M\u00e0 l\u00e0 khu\u00f4n.<\/p>\n\n\n\n
So s\u00e1nh v\u1edbi s\u1ed1 t\u1ea5n m\u1ed7i foot \u0111\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1 c\u1ee7a khu\u00f4n. Gi\u1eef \u1edf m\u1ee9c ho\u1eb7c d\u01b0\u1edbi 80% c\u1ee7a m\u1ee9c \u0111\u00e1nh gi\u00e1 \u0111\u00f3. Kho\u1ea3ng c\u00e1ch an to\u00e0n n\u00e0y kh\u00f4ng ph\u1ea3i l\u00e0 h\u00e8n nh\u00e1t. N\u00f3 l\u00e0 b\u1ea3o hi\u1ec3m ch\u1ed1ng l\u1ea1i s\u1ef1 bi\u1ebfn thi\u00ean v\u1ec1 \u0111\u1ed9 b\u1ec1n k\u00e9o, \u0111\u1ed9 s\u00e2u th\u00e2m nh\u1eadp v\u00e0 l\u1ed7i c\u0103n ch\u1ec9nh.<\/p>\n\n\n\n
4. Ki\u1ec3m tra kh\u1ea3 n\u0103ng t\u1ea3i tr\u1ecdng t\u1eadp trung c\u1ee7a m\u00e1y.<\/strong> Kh\u00f4ng ph\u1ea3i t\u1ea5n \u0111\u1ecbnh m\u1ee9c. Bi\u1ec3u \u0111\u1ed3 t\u1ea3i tr\u1ecdng t\u1eadp trung. N\u1ebfu t\u1ed5ng l\u1ef1c n\u00e9n b\u1ea1n t\u00ednh v\u01b0\u1ee3t qu\u00e1 80% t\u1ea3i tr\u1ecdng t\u1eadp trung cho ph\u00e9p \u0111\u1ed1i v\u1edbi kho\u1ea3ng u\u1ed1n \u0111\u00f3, b\u1ea1n \u0111ang u\u1ed1n trong v\u00f9ng \u0111\u1ecf ngay c\u1ea3 khi b\u1ea3ng t\u00ean m\u00e1y n\u00f3i b\u1ea1n \u1ed5n.<\/p>\n\n\n\n
\u0110\u1ecbnh m\u1ee9c m\u00e1y l\u00e0 tr\u1ea7n nh\u00e0. T\u1ea3i tr\u1ecdng t\u1eadp trung l\u00e0 tr\u1ecdng l\u1ef1c.<\/p>\n\n\n\n
5. X\u00e1c minh r\u1eb1ng ch\u00ednh m\u00e1y kh\u00f4ng l\u1eeba b\u1ea1n.<\/strong> \u0110i\u1ec1u anh ta kh\u00f4ng bao gi\u1edd ki\u1ec3m tra l\u00e0 m\u1eb7t b\u00e0n.<\/p>\n\n\n\n
\u0110\u1ed9 l\u1ec7ch b\u00e0n 0,06 mm tr\u00ean m\u1ed9t kho\u1ea3ng d\u00e0i c\u00f3 th\u1ec3 chuy\u1ec3n th\u00e0nh s\u1ef1 thay \u0111\u1ed5i g\u00f3c \u0111o \u0111\u01b0\u1ee3c. N\u1ebfu b\u00e0n \u0111\u00e3 b\u1ecb bi\u1ebfn d\u1ea1ng do nhi\u1ec1u n\u0103m s\u1eed d\u1ee5ng qu\u00e1 m\u1ee9c, c\u00e1c ph\u00e9p t\u00ednh t\u1ea3i tr\u1ecdng tuy\u1ec7t \u0111\u1eb9p c\u1ee7a b\u1ea1n s\u1ebd kh\u00f4ng gi\u1eef \u0111\u01b0\u1ee3c g\u00f3c tr\u00ean to\u00e0n b\u1ed9 chi ti\u1ebft. \u0110\u1ed9 l\u1eb7p l\u1ea1i c\u1ee7a th\u01b0\u1edbc \u0111o sau tr\u00f4i qu\u00e1 v\u00e0i ph\u1ea7n tr\u0103m milim\u00e9t? \u0110\u01b0\u1eddng u\u1ed1n c\u1ee7a b\u1ea1n s\u1ebd d\u1ecbch chuy\u1ec3n, c\u00e1nh tay \u0111\u00f2n hi\u1ec7u d\u1ee5ng thay \u0111\u1ed5i, v\u00e0 l\u1ef1c t\u00ednh to\u00e1n c\u1ee7a b\u1ea1n s\u1ebd kh\u00f4ng c\u00f2n kh\u1edbp v\u1edbi th\u1ef1c t\u1ebf.<\/p>\n\n\n\n
M\u1ed9t bi\u1ebfn s\u1ed1 m\u00e1y sai s\u1ebd l\u00e0m v\u00f4 hi\u1ec7u to\u00e0n b\u1ed9 ph\u00e9p t\u00ednh.<\/p>\n\n\n\n
B\u1ea1n th\u1ea5y danh s\u00e1ch ki\u1ec3m n\u00e0y l\u00e0m g\u00ec kh\u00f4ng? N\u00f3 bi\u1ebfn t\u1ea3i tr\u1ecdng t\u1eeb m\u1ed9t con s\u1ed1 \u0111\u01a1n th\u00e0nh m\u1ed9t chu\u1ed7i c\u00e1c \u0111i\u1ec1u ki\u1ec7n ph\u1ee5 thu\u1ed9c. G\u00e3y m\u1ed9t m\u1eaft x\u00edch, k\u1ebft qu\u1ea3 s\u1ebd thay \u0111\u1ed5i.<\/p>\n\n\n\n
Nh\u01b0ng t\u1ea5t c\u1ea3 v\u1eabn ph\u1ee5 thu\u1ed9c v\u00e0o m\u1ed9t con s\u1ed1 m\u00e0 b\u1ea1n nh\u1ea5t \u0111\u1ecbnh ph\u1ea3i bi\u1ebft.<\/p>\n\n\n\n
B\u01b0\u1edbc<\/th> M\u00f4 t\u1ea3<\/th><\/tr><\/thead> 1. \u0110o th\u1ef1c t\u1ebf.<\/strong> <\/td> \u0110\u1ed9 d\u00e0y th\u1ef1c t\u1ebf. Chi\u1ec1u d\u00e0i u\u1ed1n th\u1ef1c t\u1ebf. Lo\u1ea1i v\u1eadt li\u1ec7u th\u1ef1c t\u1ebf. N\u1ebfu b\u1ea1n chuy\u1ec3n t\u1eeb A36 sang 304 m\u00e0 kh\u00f4ng thay \u0111\u1ed5i h\u1ec7 s\u1ed1 nh\u00e2n, b\u1ea1n kh\u00f4ng t\u00ednh to\u00e1n \u2014 b\u1ea1n \u0111\u00e3 gi\u1ea3 \u0111\u1ecbnh.<\/td><\/tr> 2. T\u00ednh to\u00e1n t\u1ed5ng t\u1ea3i tr\u1ecdng \u0111\u00e3 hi\u1ec7u ch\u1ec9nh.<\/strong> <\/td> S\u1ed1 t\u1ea5n c\u01a1 b\u1ea3n tr\u00ean m\u1ed7i foot \u00d7 h\u1ec7 s\u1ed1 v\u1eadt li\u1ec7u \u00d7 h\u1ec7 s\u1ed1 ph\u01b0\u01a1ng ph\u00e1p \u00d7 chi\u1ec1u d\u00e0i u\u1ed1n. U\u1ed1n kh\u00f4ng kh\u00ed l\u00e0 c\u01a1 s\u1edf c\u1ee7a b\u1ea1n. U\u1ed1n \u0111\u00e1y ho\u1eb7c d\u1eadp \u0111\u1ed3ng? Nh\u00e2n t\u01b0\u01a1ng \u1ee9ng. C\u00f4ng vi\u1ec7c ch\u00ednh x\u00e1c cao \u0111\u00f4i khi c\u1ea7n nhi\u1ec1u l\u1ef1c h\u01a1n bi\u1ec3u \u0111\u1ed3 g\u1ee3i \u00fd \u0111\u1ec3 gi\u1eef g\u00f3c v\u00e0 ki\u1ec3m so\u00e1t \u0111\u1ed9 \u0111\u00e0n h\u1ed3i \u2014 v\u00e0 l\u1ef1c b\u1ed5 sung \u0111\u00f3 ph\u1ea3i l\u00e0 ch\u1ee7 \u00fd, kh\u00f4ng ph\u1ea3i ng\u1eabu nhi\u00ean. B\u00e2y gi\u1edd b\u1ea1n c\u00f3 t\u1ed5ng t\u1ea3i tr\u1ecdng c\u1ee7a h\u1ec7 th\u1ed1ng.<\/td><\/tr> 3. Chuy\u1ec3n \u0111\u1ed5i sang m\u1eadt \u0111\u1ed9 t\u1ea3i.<\/strong> <\/td> T\u1ed5ng s\u1ed1 t\u1ea5n \u00f7 chi\u1ec1u d\u00e0i u\u1ed1n th\u1ef1c t\u1ebf (t\u00ednh b\u1eb1ng foot). \u0110\u00f3 l\u00e0 con s\u1ed1 m\u00e0 khu\u00f4n c\u1ea3m nh\u1eadn. Kh\u00f4ng ph\u1ea3i m\u00e1y. L\u00e0 khu\u00f4n. So s\u00e1nh v\u1edbi s\u1ed1 t\u1ea5n tr\u00ean m\u1ed7i foot \u0111\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1 c\u1ee7a khu\u00f4n. Gi\u1eef \u1edf m\u1ee9c ho\u1eb7c d\u01b0\u1edbi 80% c\u1ee7a m\u1ee9c \u0111\u00e1nh gi\u00e1 \u0111\u00f3. Kho\u1ea3ng c\u00e1ch an to\u00e0n n\u00e0y kh\u00f4ng ph\u1ea3i l\u00e0 h\u00e8n nh\u00e1t. N\u00f3 l\u00e0 b\u1ea3o hi\u1ec3m ch\u1ed1ng l\u1ea1i s\u1ef1 thay \u0111\u1ed5i \u0111\u1ed9 b\u1ec1n k\u00e9o, \u0111\u1ed9 s\u00e2u th\u00e2m nh\u1eadp v\u00e0 sai l\u1ec7ch c\u0103n ch\u1ec9nh.<\/td><\/tr> 4. Ki\u1ec3m tra kh\u1ea3 n\u0103ng ch\u1ecbu t\u1ea3i trung t\u00e2m c\u1ee7a m\u00e1y.<\/strong> <\/td> Kh\u00f4ng ph\u1ea3i t\u1ea3i tr\u1ecdng \u0111\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1. L\u00e0 bi\u1ec3u \u0111\u1ed3 t\u1ea3i trung t\u00e2m. N\u1ebfu t\u1ed5ng t\u1ea3i tr\u1ecdng t\u00ednh to\u00e1n c\u1ee7a b\u1ea1n v\u01b0\u1ee3t qu\u00e1 80% c\u1ee7a t\u1ea3i trung t\u00e2m cho ph\u00e9p tr\u00ean kho\u1ea3ng \u0111\u00f3, b\u1ea1n \u0111ang u\u1ed1n trong v\u00f9ng \u0111\u1ecf ngay c\u1ea3 khi b\u1ea3ng t\u00ean n\u00f3i r\u1eb1ng b\u1ea1n \u1ed5n. \u0110\u00e1nh gi\u00e1 m\u00e1y l\u00e0 tr\u1ea7n. T\u1ea3i trung t\u00e2m l\u00e0 tr\u1ecdng l\u1ef1c.<\/td><\/tr> 5. X\u00e1c minh r\u1eb1ng ch\u00ednh m\u00e1y kh\u00f4ng l\u1eeba b\u1ea1n.<\/strong> <\/td> \u0110i\u1ec1u m\u00e0 anh \u1ea5y kh\u00f4ng bao gi\u1edd ki\u1ec3m tra l\u00e0 b\u00e0n. \u0110\u1ed9 l\u1ec7ch b\u00e0n 0,06 mm tr\u00ean m\u1ed9t kho\u1ea3ng d\u00e0i c\u00f3 th\u1ec3 chuy\u1ec3n th\u00e0nh s\u1ef1 thay \u0111\u1ed5i g\u00f3c \u0111o \u0111\u01b0\u1ee3c. N\u1ebfu b\u00e0n \u0111\u00e3 b\u1ecb bi\u1ebfn d\u1ea1ng do nhi\u1ec1u n\u0103m s\u1eed d\u1ee5ng qu\u00e1 m\u1ee9c, c\u00e1c ph\u00e9p t\u00ednh t\u1ea3i tr\u1ecdng tuy\u1ec7t \u0111\u1eb9p c\u1ee7a b\u1ea1n s\u1ebd kh\u00f4ng gi\u1eef \u0111\u01b0\u1ee3c g\u00f3c tr\u00ean to\u00e0n b\u1ed9 chi ti\u1ebft. \u0110\u1ed9 l\u1eb7p l\u1ea1i c\u1ee7a th\u01b0\u1edbc \u0111o sau tr\u00f4i qu\u00e1 v\u00e0i ph\u1ea7n tr\u0103m milim\u00e9t? \u0110\u01b0\u1eddng u\u1ed1n c\u1ee7a b\u1ea1n s\u1ebd d\u1ecbch chuy\u1ec3n, c\u00e1nh tay \u0111\u00f2n hi\u1ec7u d\u1ee5ng thay \u0111\u1ed5i, v\u00e0 l\u1ef1c t\u00ednh to\u00e1n c\u1ee7a b\u1ea1n s\u1ebd kh\u00f4ng c\u00f2n kh\u1edbp v\u1edbi th\u1ef1c t\u1ebf. M\u1ed9t bi\u1ebfn s\u1ed1 m\u00e1y sai s\u1ebd l\u00e0m v\u00f4 hi\u1ec7u to\u00e0n b\u1ed9 ph\u00e9p t\u00ednh.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n Con s\u1ed1 t\u00ednh to\u00e1n duy nh\u1ea5t m\u00e0 b\u1ea1n nh\u1ea5t \u0111\u1ecbnh ph\u1ea3i bi\u1ebft tr\u01b0\u1edbc khi c\u1ea7n \u0111i xu\u1ed1ng<\/h3>\n\n\n\n
B\u1ea1n ph\u1ea3i bi\u1ebft s\u1ed1 t\u1ea5n tr\u00ean m\u1ed7i foot \u0111\u00e3 \u0111\u01b0\u1ee3c x\u00e1c minh t\u1ea1i m\u1ee9c an to\u00e0n d\u1ef1 ki\u1ebfn<\/strong>.<\/p>\n\n\n\n
Kh\u00f4ng ph\u1ea3i s\u1ed1 t\u1ea5n tr\u00ean m\u1ed7i foot t\u1eeb bi\u1ec3u \u0111\u1ed3. Kh\u00f4ng ph\u1ea3i s\u1ed1 t\u1ea5n tr\u00ean m\u1ed7i foot t\u00ednh th\u00f4. \u0110\u00e3 \u0111\u01b0\u1ee3c x\u00e1c minh, hi\u1ec7u ch\u1ec9nh v\u00e0 \u0111i\u1ec1u ch\u1ec9nh theo m\u1ee9c an to\u00e0n.<\/p>\n\n\n\n
\u0110\u00e2y l\u00e0 phi\u00ean b\u1ea3n ghi nhanh:<\/p>\n\n\n\n
- \n
- T\u1ed5ng s\u1ed1 t\u1ea5n \u0111\u00e3 hi\u1ec7u ch\u1ec9nh (bao g\u1ed3m v\u1eadt li\u1ec7u \u00d7 ph\u01b0\u01a1ng ph\u00e1p).<\/li>\n\n\n\n
- Chia cho chi\u1ec1u d\u00e0i u\u1ed1n th\u1ef1c t\u1ebf t\u00ednh b\u1eb1ng feet.<\/li>\n\n\n\n
- Nh\u00e2n v\u1edbi 1,25 \u0111\u1ec3 xem 100% tr\u00f4ng nh\u01b0 th\u1ebf n\u00e0o \u2014 sau \u0111\u00f3 thi\u1ebft k\u1ebf \u1edf m\u1ee9c 0,8 c\u1ee7a gi\u1edbi h\u1ea1n \u0111\u1ecbnh m\u1ee9c.<\/li>\n<\/ol>\n\n\n\n
N\u1ebfu khu\u00f4n c\u1ee7a b\u1ea1n \u0111\u01b0\u1ee3c \u0111\u1ecbnh m\u1ee9c 24 t\u1ea5n m\u1ed7i foot, tr\u1ea7n l\u00e0m vi\u1ec7c c\u1ee7a b\u1ea1n kho\u1ea3ng 19. N\u1ebfu ph\u00e9p t\u00ednh c\u1ee7a b\u1ea1n cho ra 21, b\u1ea1n kh\u00f4ng ph\u1ea3i l\u00e0 \u201ch\u01a1i v\u01b0\u1ee3t\u201d. B\u1ea1n \u0111ang v\u1eadn h\u00e0nh v\u01b0\u1ee3t qu\u00e1 v\u00f9ng \u0111\u00e0n h\u1ed3i tho\u1ea3i m\u00e1i c\u1ee7a th\u00e9p c\u00f4ng c\u1ee5.<\/p>\n\n\n\n
C\u1eef ch\u00e0y h\u1ea1 xu\u1ed1ng.<\/p>\n\n\n\n
Th\u00e9p kh\u00f4ng quan t\u00e2m r\u1eb1ng b\u1ea1n \u0111\u00e3 g\u1ea7n \u0111\u1ea1t.<\/p>\n\n\n\n
V\u00e0 \u0111\u00e2y l\u00e0 ph\u1ea7n kh\u00f4ng r\u00f5 r\u00e0ng m\u00e0 b\u1ea1n c\u1ea7n ghi nh\u1edb: b\u1ea3ng bi\u1ec3u tonnage kh\u00f4ng nguy hi\u1ec3m v\u00ec n\u00f3 sai. N\u00f3 nguy hi\u1ec3m v\u00ec n\u00f3 khi\u1ebfn b\u1ea1n ng\u1eebng suy ngh\u0129 qu\u00e1 s\u1edbm. N\u00f3 c\u00f3 v\u1ebb ch\u00ednh x\u00e1c, n\u00ean b\u1ea1n coi n\u00f3 nh\u01b0 m\u1ed9t th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt. Th\u1ef1c t\u1ebf, \u0111\u00f3 l\u00e0 m\u1ed9t ph\u1ecfng \u0111o\u00e1n l\u1ecbch s\u1ef1 d\u1ef1a tr\u00ean nh\u1eefng gi\u1ea3 \u0111\u1ecbnh m\u00e0 x\u01b0\u1edfng c\u1ee7a b\u1ea1n vi ph\u1ea1m m\u1ed7i ng\u00e0y.<\/p>\n\n\n\n
Khung ph\u01b0\u01a1ng ph\u00e1p bu\u1ed9c b\u1ea1n ph\u1ea3i chuy\u1ec3n ph\u1ecfng \u0111o\u00e1n \u0111\u00f3 th\u00e0nh m\u1eadt \u0111\u1ed9 t\u1ea3i \u0111\u00e3 \u0111\u01b0\u1ee3c x\u00e1c minh trong gi\u1edbi h\u1ea1n m\u00e1y \u0111\u00e3 bi\u1ebft, v\u1edbi m\u1ed9t v\u00f9ng \u0111\u1ec7m h\u1ea5p th\u1ee5 th\u1ef1c t\u1ebf.<\/p>\n\n\n\n
Tr\u01b0\u1edbc khi c\u1ea7n \u00e9p \u0111i xu\u1ed1ng, b\u1ea1n c\u1ea7n bi\u1ebft r\u00f5 ba \u0111i\u1ec1u: T\u1ed5ng tonnage \u0111\u00e3 \u0111\u01b0\u1ee3c hi\u1ec7u ch\u1ec9nh. S\u1ed1 t\u1ea5n m\u1ed7i foot \u0111\u00e3 \u0111\u01b0\u1ee3c x\u00e1c minh \u1edf m\u1ee9c 80% ho\u1eb7c th\u1ea5p h\u01a1n so v\u1edbi \u0111\u1ecbnh m\u1ee9c d\u1ee5ng c\u1ee5. T\u1ea3i tr\u1ecdng trung t\u00e2m cho ph\u00e9p c\u1ee7a m\u00e1y \u0111\u1ed1i v\u1edbi kho\u1ea3ng c\u00e1ch \u0111\u00f3.<\/p>\n\n\n\n
N\u1ebfu kh\u00f4ng, b\u1ea1n kh\u00f4ng ph\u1ea3i \u0111ang u\u1ed1n kim lo\u1ea1i.<\/p>\n\n\n\n
B\u1ea1n \u0111ang \u0111\u00e1nh c\u01b0\u1ee3c v\u1edbi th\u00e9p \u0111\u00e3 t\u00f4i c\u1ee9ng v\u00e0 m\u1ed9t khung m\u00e1y ghi nh\u1edb m\u1ecdi sai l\u1ea7m.<\/p>","protected":false},"excerpt":{"rendered":"
T\u00f4i \u0111\u00e3 xem m\u1ed9t ng\u01b0\u1eddi thi\u1ebft l\u1eadp \u0111\u1ec3 u\u1ed1n th\u00e9p cacbon th\u1ea5p 10\u2011gauge, chi\u1ec1u d\u00e0i u\u1ed1n 8 feet, ch\u1ecdn khu\u00f4n V th\u1eb3ng t\u1eeb b\u1ea3ng h\u01b0\u1edbng d\u1eabn treo tr\u00ean t\u01b0\u1eddng. Anh ta \u0111i\u1ec1u ch\u1ec9nh l\u1ef1c \u00e9p \u0111\u00fang theo th\u00f4ng s\u1ed1 tr\u00ean b\u1ea3ng. Tr\u1ee5c \u00e9p h\u1ea1 xu\u1ed1ng. Ph\u1ea7n \u0111\u1ea7u ti\u00ean tr\u00f4ng \u1ed5n \u1edf b\u00ean tr\u00e1i, h\u01a1i m\u1edf h\u01a1n \u1edf b\u00ean ph\u1ea3i. Anh ta \u0111\u1ed5 l\u1ed7i cho v\u1eadt li\u1ec7u. Th\u00eam m\u1ed9t ch\u00fat l\u1ef1c n\u1eefa. \u0110i\u1ec1u m\u00e0 anh ta [\u2026]<\/p>","protected":false},"author":3,"featured_media":836,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_breakdance_hide_in_design_set":false,"_breakdance_tags":"","footnotes":""},"categories":[1],"tags":[],"class_list":["post-832","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/cn-hawe.com\/vi\/wp-json\/wp\/v2\/posts\/832","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/cn-hawe.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/cn-hawe.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/cn-hawe.com\/vi\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/cn-hawe.com\/vi\/wp-json\/wp\/v2\/comments?post=832"}],"version-history":[{"count":2,"href":"https:\/\/cn-hawe.com\/vi\/wp-json\/wp\/v2\/posts\/832\/revisions"}],"predecessor-version":[{"id":1098,"href":"https:\/\/cn-hawe.com\/vi\/wp-json\/wp\/v2\/posts\/832\/revisions\/1098"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cn-hawe.com\/vi\/wp-json\/wp\/v2\/media\/836"}],"wp:attachment":[{"href":"https:\/\/cn-hawe.com\/vi\/wp-json\/wp\/v2\/media?parent=832"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cn-hawe.com\/vi\/wp-json\/wp\/v2\/categories?post=832"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cn-hawe.com\/vi\/wp-json\/wp\/v2\/tags?post=832"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}