{"id":1414,"date":"2026-03-20T07:06:17","date_gmt":"2026-03-20T07:06:17","guid":{"rendered":"https:\/\/cn-hawe.com\/?p=1414"},"modified":"2026-03-26T07:02:44","modified_gmt":"2026-03-26T07:02:44","slug":"press-brake-bending-dies","status":"publish","type":"post","link":"https:\/\/cn-hawe.com\/vi\/press-brake-bending-dies\/","title":{"rendered":"Khu\u00f4n U\u1ed1n Ch\u1ea5n T\u00f4n: T\u1ea1i Sao Khu\u00f4n Ch\u1eef V \u201c\u0110a N\u0103ng\u201d Khi\u1ebfn B\u1ea1n M\u1ea5t 30% Th\u1eddi Gian Thi\u1ebft L\u1eadp"},"content":{"rendered":"

B\u1ea1n u\u1ed1n n\u00f3 th\u00e0nh 88\u00b0. G\u00f5 th\u00eam l\u1ea7n n\u1eefa. 91,5\u00b0. R\u00fat khu\u00f4n, l\u00f3t th\u00eam m\u1ed9t t\u1ea5m ch\u00eam 0,5 mm, ch\u1ea1y m\u1ed9t m\u1eabu th\u1eed kh\u00e1c v\u00e0 cu\u1ed1i c\u00f9ng \u0111\u1ea1t \u0111\u01b0\u1ee3c 90\u00b0.<\/p>\n\n\n\n

\u0110i\u1ec7u nh\u1ea3y nh\u1ecf \u0111\u00f3 \u0111\u00e3 ti\u00eau t\u1ed1n 18 ph\u00fat v\u00e0 hai ph\u00f4i th\u00e9p A36 d\u00e0y 11 gauge. V\u00e0 b\u1ea1n v\u1eabn g\u1ecdi khu\u00f4n \u0111\u00f3 l\u00e0 \u201c\u0111a n\u0103ng.\u201d<\/p>\n\n\n\n

B\u1ea1n kh\u00f4ng c\u1ea3m nh\u1eadn \u0111\u01b0\u1ee3c s\u1ef1 l\u00e3ng ph\u00ed v\u00ec n\u00f3 \u1ea9n trong \u201cquy tr\u00ecnh thi\u1ebft l\u1eadp b\u00ecnh th\u01b0\u1eddng.\u201d \u0110\u00f3 ch\u00ednh l\u00e0 c\u00e1i b\u1eaby.<\/p>\n\n\n\n

C\u00e1i b\u1eaby V-Die: Khi d\u1ee5ng c\u1ee5 \u201c\u0111a n\u0103ng\u201d tr\u1edf th\u00e0nh g\u00e1nh n\u1eb7ng<\/h2>\n\n\n\n

Tr\u00ean m\u1ed9t m\u00e1y ch\u1ea5n 120 t\u1ea5n, u\u1ed1n th\u00e9p m\u1ec1m 3 mm trong khe m\u1edf ti\u00eau chu\u1ea9n 8\u00d7V, t\u00f4i \u0111\u00e3 th\u1ea5y nh\u1eefng th\u1ee3 l\u00e0nh ngh\u1ec1 ph\u1ea3i th\u1eed ba l\u1ea7n tr\u01b0\u1edbc khi ph\u00ea duy\u1ec7t s\u1ea3n ph\u1ea9m \u0111\u1ea7u ti\u00ean. V\u1edbi chi ph\u00ed x\u01b0\u1edfng l\u00e0 $85 m\u1ed7i gi\u1edd, \u0111\u00f3 t\u01b0\u01a1ng \u0111\u01b0\u01a1ng kho\u1ea3ng $25 chi ph\u00ed lao \u0111\u1ed9ng tr\u01b0\u1edbc khi s\u1ea3n xu\u1ea5t th\u1ef1c s\u1ef1 b\u1eaft \u0111\u1ea7u\u2014cho m\u1ed7i l\u1ea7n thi\u1ebft l\u1eadp. C\u1ed9ng th\u00eam hai ph\u00f4i b\u1ecb lo\u1ea1i tr\u1ecb gi\u00e1 $6 m\u1ed7i c\u00e1i, b\u1ea1n \u0111\u00e3 m\u1ea5t $37 tr\u01b0\u1edbc c\u1ea3 khi b\u00e1n \u0111\u01b0\u1ee3c s\u1ea3n ph\u1ea9m n\u00e0o.<\/p>\n\n\n\n

L\u00e0m v\u1eady n\u0103m l\u1ea7n m\u1ed9t ng\u00e0y v\u00e0 b\u1ea1n \u0111\u00e3 ch\u00f4n $185 v\u00e0o nh\u1eefng \u201c\u0111i\u1ec1u ch\u1ec9nh nh\u1ecf.\u201d<\/p>\n\n\n\n

Quy t\u1eafc x\u01b0\u1edfng: N\u1ebfu b\u1ea1n ph\u1ea3i \u0111i\u1ec1u ch\u1ec9nh g\u00f3c nhi\u1ec1u h\u01a1n m\u1ed9t l\u1ea7n trong m\u1ed7i l\u1ea7n thi\u1ebft l\u1eadp, th\u00ec khu\u00f4n \u0111\u00f3 kh\u00f4ng ph\u1ea3i l\u00e0 \u0111a n\u0103ng\u2014m\u00e0 l\u00e0 b\u1ecb ch\u1ecdn sai.<\/strong><\/p>\n\n\n\n

M\u1ed9t khu\u00f4n V gi\u1ed1ng nh\u01b0 m\u1ed9t c\u1edd l\u00ea \u0111i\u1ec1u ch\u1ec9nh trong vi\u1ec7c l\u1eafp r\u00e1p \u0111\u1ed9ng c\u01a1 ch\u00ednh x\u00e1c. N\u00f3 s\u1ebd v\u1eb7n \u0111\u01b0\u1ee3c bu l\u00f4ng. C\u00f3 th\u1ec3 b\u1ea1n th\u1ea5y c\u1ea7m r\u1ea5t v\u1eeba tay. Nh\u01b0ng m\u1ed7i l\u1ea7n tr\u01b0\u1ee3t v\u00e0 bo tr\u00f2n c\u1ea1nh bu l\u00f4ng, b\u1ea1n s\u1ebd ph\u1ea3i tr\u1ea3 gi\u00e1 cho s\u1ef1 ti\u1ec7n l\u1ee3i \u0111\u00f3 sau n\u00e0y.<\/p>\n\n\n\n

V\u1eady t\u1ea1i sao m\u1ed9t d\u1ee5ng c\u1ee5 \u201cd\u00f9ng cho m\u1ecdi th\u1ee9\u201d l\u1ea1i khi\u1ebfn b\u1ea1n ph\u1ea3i ch\u1ec9nh \u0111i ch\u1ec9nh l\u1ea1i m\u1ecdi th\u1ee9?<\/p>\n\n\n\n

Chi ph\u00ed \u1ea9n c\u1ee7a chi\u1ebfn l\u01b0\u1ee3c \u201cm\u1ed9t khu\u00f4n cho t\u1ea5t c\u1ea3\u201d: ch\u1ec9nh g\u00f3c, th\u1eed u\u1ed1n, v\u00e0 ch\u00eam l\u1edbp<\/h3>\n\n\n\n
\"Chi<\/figure>\n\n\n\n

Ch\u1ec9nh g\u00f3c kh\u00f4ng mi\u1ec5n ph\u00ed. M\u1ed7i l\u1ea7n u\u1ed1n l\u1ea1i l\u00e0m c\u1ee9ng v\u00f9ng ch\u1ea5n. M\u1ed7i t\u1ea5m ch\u00eam thay \u0111\u1ed5i chi\u1ec1u cao \u0111\u00f3ng v\u00e0 l\u00e0m l\u1ec7ch m\u1ed1c tham chi\u1ebfu. M\u1ed7i m\u1eabu th\u1eed l\u00e0m gi\u00e1n \u0111o\u1ea1n lu\u1ed3ng c\u00f4ng vi\u1ec7c.<\/p>\n\n\n\n

Gi\u1ea3 s\u1eed b\u1ea1n \u0111ang ch\u1ea5n th\u00e9p kh\u00f4ng g\u1ec9 304 d\u00e0y 2 mm b\u1eb1ng c\u00f9ng m\u1ed9t khe m\u1edf 8\u00d7V \u0111\u00f3. Th\u00e9p kh\u00f4ng g\u1ec9 \u0111\u00e0n h\u1ed3i ng\u01b0\u1ee3c m\u1ea1nh h\u01a1n th\u00e9p m\u1ec1m. B\u1ea3ng t\u00ednh l\u1ef1c ch\u1ea5n n\u00f3i 28 t\u1ea5n m\u1ed7i m\u00e9t s\u1ebd \u0111\u1ea1t 90\u00b0. Tr\u00ean gi\u1ea5y, ho\u00e0n h\u1ea3o. Tr\u00ean s\u00e0n x\u01b0\u1edfng, b\u1ea1n \u0111\u1ea1t 87\u00b0.<\/p>\n\n\n\n

V\u00ec th\u1ebf b\u1ea1n ch\u1ea5n th\u00eam. Gi\u1edd n\u00f3 th\u00e0nh 92\u00b0 v\u00ec l\u00f4 v\u1eadt li\u1ec7u n\u00e0y c\u00f3 \u0111\u1ed9 b\u1ec1n k\u00e9o cao h\u01a1n 10 ksi so v\u1edbi l\u00f4 tr\u01b0\u1edbc.<\/p>\n\n\n\n

B\u1ea1n b\u1eaft \u0111\u1ea7u \u0111u\u1ed5i theo n\u00f3.<\/p>\n\n\n\n

Khu\u00f4n kh\u00f4ng thay \u0111\u1ed5i. V\u1eadt li\u1ec7u thay \u0111\u1ed5i. V\u00e0 khe m\u1edf V qu\u00e1 r\u1ed9ng \u0111\u1ec3 ki\u1ec3m so\u00e1t ch\u1eb7t b\u00e1n k\u00ednh b\u00ean trong, n\u00ean kho\u1ea3ng tr\u1eeb chi\u1ec1u u\u1ed1n c\u1ee7a b\u1ea1n thay \u0111\u1ed5i theo m\u1ed7i l\u1ea7n ch\u1ec9nh. \u0110\u00f3 kh\u00f4ng ph\u1ea3i l\u1ed7i c\u1ee7a th\u1ee3. \u0110\u00f3 l\u00e0 dung sai h\u00ecnh h\u1ecdc ch\u1ed1ng l\u1ea1i b\u1ea1n.<\/p>\n\n\n\n

N\u1ebfu khu\u00f4n th\u1ef1c s\u1ef1 l\u00e0 \u201cm\u1ed9t c\u1ee1 d\u00f9ng cho t\u1ea5t c\u1ea3,\u201d t\u1ea1i sao n\u00f3 l\u1ea1i \u1ee9ng x\u1eed kh\u00e1c nhau m\u1ed7i khi \u0111\u1ed9 d\u00e0y ho\u1eb7c c\u01b0\u1eddng \u0111\u1ed9 k\u00e9o thay \u0111\u1ed5i m\u1ed9t ch\u00fat?<\/p>\n\n\n\n

T\u1ea1i sao nh\u1eefng l\u1ea7n t\u00ednh to\u00e1n g\u00f3c u\u1ed1n ho\u00e0n h\u1ea3o v\u1eabn b\u1ecb n\u1ee9t, \u0111\u00e0n h\u1ed3i ng\u01b0\u1ee3c ho\u1eb7c l\u1ec7ch g\u00f3c khi ra x\u01b0\u1edfng<\/h3>\n\n\n\n
\"T\u1ea1i<\/figure>\n\n\n\n

B\u1ea1n c\u00f3 th\u1ec3 t\u00ednh l\u1ef1c ch\u1ea5n ch\u00ednh x\u00e1c \u0111\u1ebfn t\u1eebng ph\u1ea7n th\u1eadp ph\u00e2n. C\u0169ng ch\u1eb3ng c\u00f3 \u00fd ngh\u0129a g\u00ec.<\/p>\n\n\n\n

Trong u\u1ed1n kh\u00f4ng ch\u1ea1m, b\u00e1n k\u00ednh b\u00ean trong h\u00ecnh th\u00e0nh theo t\u1ef7 l\u1ec7 ph\u1ea7n tr\u0103m c\u1ee7a khe m\u1edf V\u2014th\u00f4ng th\u01b0\u1eddng kho\u1ea3ng 16% \u0111\u1ed1i v\u1edbi th\u00e9p m\u1ec1m. Thay \u0111\u1ed5i \u0111\u1ed9 r\u1ed9ng V, b\u1ea1n thay \u0111\u1ed5i b\u00e1n k\u00ednh. Thay \u0111\u1ed5i b\u00e1n k\u00ednh, b\u1ea1n thay \u0111\u1ed5i \u0111\u1ed9 \u0111\u00e0n h\u1ed3i ng\u01b0\u1ee3c. Thay \u0111\u1ed5i \u0111\u00e0n h\u1ed3i ng\u01b0\u1ee3c, b\u1ea1n thay \u0111\u1ed5i g\u00f3c cu\u1ed1i c\u00f9ng.<\/p>\n\n\n\n

B\u00e2y gi\u1edd h\u00e3y h\u00ecnh dung t\u1ea5m nh\u00f4m d\u00e0y 1,6 mm trong khe V \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf cho th\u00e9p 3 mm. B\u00e1n k\u00ednh b\u00ean trong k\u1ebft qu\u1ea3 qu\u00e1 l\u1edbn so v\u1edbi \u0111\u1ed9 d\u00e0y. D\u00f2ng ch\u1ea3y v\u1eadt li\u1ec7u thay \u0111\u1ed5i. B\u1ea1n s\u1ebd c\u00f3 c\u00e1c g\u00f3c kh\u00f4ng \u0111\u1ed3ng \u0111\u1ec1u d\u1ecdc theo chi\u1ec1u d\u00e0i chi ti\u1ebft v\u00ec ma s\u00e1t trong m\u1ed9t khu\u00f4n V ti\u00eau chu\u1ea9n l\u00e0 ma s\u00e1t tr\u01b0\u1ee3t\u2014th\u01b0\u1eddng v\u00e0o kho\u1ea3ng 0,12 \u0111\u1ebfn 0,18. S\u1ef1 tr\u01b0\u1ee3t n\u00e0y k\u00e9o b\u1ec1 m\u1eb7t, t\u1ea1o bi\u1ebfn thi\u00ean v\u00e0 \u0111\u1ec3 l\u1ea1i nh\u1eefng v\u1ebft x\u01b0\u1edbc nh\u1ecf m\u00e0 b\u1ea1n kh\u00f4ng th\u1ea5y cho \u0111\u1ebfn khi s\u01a1n t\u0129nh \u0111i\u1ec7n.<\/p>\n\n\n\n

B\u1ea1n t\u01b0\u1edfng r\u1eb1ng m\u00ecnh \u0111ang u\u1ed1n kim lo\u1ea1i. Th\u1ef1c ra b\u1ea1n \u0111ang \u0111\u00e0m ph\u00e1n v\u1edbi s\u1ef1 ph\u00e2n b\u1ed1 l\u1ef1c, di\u1ec7n t\u00edch ti\u1ebfp x\u00fac v\u00e0 ma s\u00e1t.<\/p>\n\n\n\n

N\u1ebfu h\u00ecnh h\u1ecdc \u0111i\u1ec1u khi\u1ec3n l\u1ef1c v\u00e0 l\u1ef1c \u0111i\u1ec1u khi\u1ec3n \u0111\u1ed9 \u0111\u00e0n h\u1ed3i h\u1ed3i l\u1ea1i, t\u1ea1i sao b\u1ea1n l\u1ea1i coi khu\u00f4n \u00e9p nh\u01b0 m\u1ed9t n\u1ec1n t\u1ea3ng trung l\u1eadp thay v\u00ec l\u00e0 bi\u1ebfn s\u1ed1 ch\u00ednh?<\/p>\n\n\n\n

\u00dd ngh\u0129a th\u1ef1c s\u1ef1 c\u1ee7a \u201cph\u1ed5 qu\u00e1t\u201d: d\u1ea3i h\u1eb9p v\u1ec1 v\u1eadt li\u1ec7u v\u00e0 \u0111\u1ed9 d\u00e0y m\u00e0 khu\u00f4n V ti\u00eau chu\u1ea9n th\u1ef1c s\u1ef1 v\u01b0\u1ee3t tr\u1ed9i.<\/h3>\n\n\n\n
\""Ph\u1ed5<\/figure>\n\n\n\n

\u0110\u00e2y l\u00e0 ph\u1ea7n m\u00e0 h\u1ea7u h\u1ebft nh\u00e2n vi\u00ean b\u00e1n h\u00e0ng s\u1ebd kh\u00f4ng n\u00f3i: m\u1ed9t khu\u00f4n V c\u1ed1 \u0111\u1ecbnh r\u1ea5t tuy\u1ec7t \u2014 trong m\u1ed9t ph\u1ea1m vi h\u1eb9p.<\/p>\n\n\n\n

Ch\u1ea1y th\u00e9p th\u01b0\u1eddng d\u00e0y 10 \u0111\u1ebfn 12 gauge c\u1ea3 ng\u00e0y, c\u00f9ng lo\u1ea1i, c\u00f9ng b\u1ec1 m\u1eb7t ho\u00e0n thi\u1ec7n, s\u1ea3n l\u01b0\u1ee3ng cao. Gi\u1eef \u0111\u1ed9 m\u1edf V \u1edf m\u1ee9c 6\u00d7 \u0111\u1ebfn 8\u00d7 \u0111\u1ed9 d\u00e0y. \u0110\u1ec3 nguy\u00ean trong m\u00e1y. \u0110i\u1ec1u ch\u1ec9nh m\u1ed9t l\u1ea7n. Ki\u1ebfm ti\u1ec1n.<\/p>\n\n\n\n

\u0110\u00f3 l\u00e0 n\u01a1i chi ph\u00ed m\u1ed7i l\u1ea7n u\u1ed1n gi\u1ea3m v\u00e0 s\u1ef1 \u0111\u01a1n gi\u1ea3n chi\u1ebfn th\u1eafng.<\/p>\n\n\n\n

Ra kh\u1ecfi d\u1ea3i \u0111\u00f3 \u2014 nh\u1ea3y t\u1eeb th\u00e9p kh\u00f4ng g\u1ec9 2 mm sang th\u00e9p x\u1eed l\u00fd d\u1ea7u v\u00e0 t\u1ea9y 5 mm, r\u1ed3i sang nh\u00f4m 1,2 mm \u2014 v\u00e0 khu\u00f4n \u201cph\u1ed5 qu\u00e1t\u201d bi\u1ebfn th\u00e0nh m\u00e1y th\u1ecfa hi\u1ec7p. B\u1ea1n kh\u00f4ng c\u00f2n u\u1ed1n hi\u1ec7u qu\u1ea3 n\u1eefa. B\u1ea1n \u0111ang ph\u1ea3i \u0111i\u1ec1u ch\u1ec9nh li\u00ean t\u1ee5c.<\/p>\n\n\n\n

S\u1ef1 thay \u0111\u1ed5i t\u00f4i mu\u1ed1n b\u1ea1n th\u1ef1c hi\u1ec7n r\u1ea5t \u0111\u01a1n gi\u1ea3n v\u00e0 g\u00e2y kh\u00f3 ch\u1ecbu: ng\u1eebng \u0111\u1ed5 l\u1ed7i cho th\u1eddi gian c\u00e0i \u0111\u1eb7t quy tr\u00ecnh v\u00e0 b\u1eaft \u0111\u1ea7u t\u1ef1 h\u1ecfi li\u1ec7u h\u00ecnh h\u1ecdc c\u1ee7a khu\u00f4n c\u00f3 ph\u00f9 h\u1ee3p v\u1edbi v\u1eadt l\u00fd c\u1ee7a v\u1eadt li\u1ec7u hay kh\u00f4ng.<\/p>\n\n\n\n

B\u1edfi v\u00ec khi b\u1ea1n \u0111\u00e3 nh\u00ecn th\u1ea5y khu\u00f4n V nh\u01b0 m\u1ed9t bi\u1ebfn s\u1ed1 \u2014 kh\u00f4ng ph\u1ea3i l\u00e0 m\u1eb7c \u0111\u1ecbnh \u2014 b\u1ea1n s\u1ebd kh\u00f4ng th\u1ec3 kh\u00f4ng th\u1ea5y n\u00f3 \u0111\u00e3 khi\u1ebfn b\u1ea1n t\u1ed1n bao nhi\u00eau chi ph\u00ed.<\/p>\n\n\n\n

V\u1eadt l\u00fd c\u1ee7a vi\u1ec7c ch\u1ecdn khu\u00f4n: ph\u00f9 h\u1ee3p h\u00ecnh h\u1ecdc v\u1edbi h\u00e0nh vi c\u1ee7a v\u1eadt li\u1ec7u<\/h2>\n\n\n\n

B\u1ea1n \u0111\u00e3 thay khu\u00f4n V 16 mm b\u1eb1ng khu\u00f4n V 24 mm khi u\u1ed1n th\u00e9p A36 d\u00e0y 3 mm v\u00ec b\u1ea3ng t\u1ea3i tr\u1ecdng cho bi\u1ebft b\u1ea1n s\u1ebd gi\u1ea3m t\u1eeb kho\u1ea3ng 40 t\u1ea5n m\u1ed7i m\u00e9t xu\u1ed1ng c\u00f2n 27. N\u01b0\u1edbc \u0111i th\u00f4ng minh, \u0111\u00fang kh\u00f4ng?<\/p>\n\n\n\n

C\u00fa u\u1ed1n \u0111\u1ea7u ti\u00ean \u0111\u1ea1t 88\u00b0. C\u00f9ng ch\u01b0\u01a1ng tr\u00ecnh. C\u00f9ng ch\u00e0y. C\u00f9ng c\u0103n sau. Ch\u1ec9 khu\u00f4n thay \u0111\u1ed5i.<\/p>\n\n\n\n

\u0110\u00f3 l\u00e0 l\u00fac h\u1ea7u h\u1ebft c\u00e1c x\u01b0\u1edfng \u0111\u1ed5 l\u1ed7i cho ng\u01b0\u1eddi v\u1eadn h\u00e0nh. T\u00f4i th\u00ec \u0111\u1ed5 l\u1ed7i cho v\u1eadt l\u00fd.<\/p>\n\n\n\n

B\u1ea1n kh\u00f4ng ch\u1ec9 gi\u1ea3m t\u1ea3i tr\u1ecdng. B\u1ea1n c\u00f2n t\u0103ng b\u00e1n k\u00ednh b\u00ean trong t\u1eeb kho\u1ea3ng 2,5 mm l\u00ean g\u1ea7n 4 mm v\u00ec, trong u\u1ed1n kh\u00f4ng ch\u1ea1m th\u00e9p th\u01b0\u1eddng, b\u00e1n k\u00ednh b\u00ean trong h\u00ecnh th\u00e0nh kho\u1ea3ng 16% c\u1ee7a \u0111\u1ed9 m\u1edf V. M\u1edf r\u1ed9ng V, b\u00e1n k\u00ednh t\u0103ng. B\u00e1n k\u00ednh t\u0103ng, \u1ee9ng su\u1ea5t v\u1eadt li\u1ec7u gi\u1ea3m. \u1ee8ng su\u1ea5t gi\u1ea3m, \u0111\u1ed9 \u0111\u00e0n h\u1ed3i h\u1ed3i l\u1ea1i t\u0103ng. V\u00e0 \u0111\u1ed9t nhi\u00ean h\u1ec7 s\u1ed1 kh\u1ea5u tr\u1eeb u\u1ed1n c\u1ee7a b\u1ea1n thay \u0111\u1ed5i v\u00ec tr\u1ee5c trung h\u00f2a \u0111\u00e3 d\u1ecbch chuy\u1ec3n.<\/p>\n\n\n\n

Ba bi\u1ebfn \u0111\u1ed5i thay \u0111\u1ed5i. B\u1ea1n ch\u1ec9 ch\u1ea1m v\u00e0o m\u1ed9t.<\/p>\n\n\n\n

Quy t\u1eafc tr\u00ean x\u01b0\u1edfng: thay \u0111\u1ed5i \u0111\u1ed9 m\u1edf V l\u00e0 b\u1ea1n t\u1ef1 \u0111\u1ed9ng thay \u0111\u1ed5i l\u1ef1c, b\u00e1n k\u00ednh v\u00e0 \u0111\u1ed9 \u0111\u00e0n h\u1ed3i h\u1ed3i l\u1ea1i \u2014 kh\u00f4ng c\u00f3 kh\u00e1i ni\u1ec7m \u0111i\u1ec1u ch\u1ec9nh m\u1ed9t bi\u1ebfn duy nh\u1ea5t.<\/strong><\/p>\n\n\n\n

N\u1ebfu \u0111\u1ed9 r\u1ed9ng khu\u00f4n \u0111\u1ed3ng th\u1eddi thay \u0111\u1ed5i h\u00ecnh h\u1ecdc ti\u1ebfp x\u00fac v\u00e0 ph\u00e2n b\u1ed1 \u1ee9ng su\u1ea5t, v\u1eady ch\u00ednh x\u00e1c th\u00ec b\u1ea1n n\u00ean ch\u1ecdn \u0111\u00fang khu\u00f4n nh\u01b0 th\u1ebf n\u00e0o thay v\u00ec \u0111o\u00e1n m\u00f2?<\/p>\n\n\n\n

Tam gi\u00e1c kh\u00f4ng th\u1ec3 t\u00e1ch r\u1eddi: c\u00e1ch \u0111\u1ed9 r\u1ed9ng m\u1edf khu\u00f4n V \u0111\u1ed3ng th\u1eddi thay \u0111\u1ed5i l\u1ef1c u\u1ed1n, b\u00e1n k\u00ednh b\u00ean trong v\u00e0 \u0111\u1ed9 \u0111\u00e0n h\u1ed3i h\u1ed3i l\u1ea1i.<\/h3>\n\n\n\n

Tr\u00ean m\u00e1y \u00e9p phanh 120 t\u1ea5n, khi u\u1ed1n th\u00e9p th\u01b0\u1eddng 3 mm b\u1eb1ng khu\u00f4n V 16 mm, b\u1ea1n c\u00f3 th\u1ec3 c\u1ea7n kho\u1ea3ng 40 t\u1ea5n m\u1ed7i m\u00e9t. \u0110\u1ed5i sang khu\u00f4n 24 mm v\u00e0 m\u1ee9c \u0111\u00f3 gi\u1ea3m c\u00f2n kho\u1ea3ng 27. Ph\u1ea7n \u0111\u00f3 th\u00ec d\u1ec5 \u2014 l\u1ef1c \u00e9p gi\u1ea3m khi \u0111\u1ed9 m\u1edf V t\u0103ng.<\/p>\n\n\n\n

\u0110i\u1ec1u \u00edt r\u00f5 r\u00e0ng h\u01a1n l\u00e0 nh\u1eefng g\u00ec x\u1ea3y ra t\u1ea1i \u0111\u01b0\u1eddng u\u1ed1n.<\/p>\n\n\n\n

Trong u\u1ed1n kh\u00f4ng ch\u1ea1m \u0111\u00e1y (air bending), t\u1ea5m kim lo\u1ea1i ch\u1ec9 ti\u1ebfp x\u00fac v\u1edbi vai khu\u00f4n v\u00e0 \u0111\u1ea7u ch\u00e0y. V c\u00e0ng l\u1edbn, kho\u1ea3ng c\u00e1ch \u0111\u1ee1 c\u00e0ng r\u1ed9ng. V\u1eadt li\u1ec7u b\u1ecb v\u00f5ng nhi\u1ec1u h\u01a1n tr\u01b0\u1edbc khi ch\u1ea3y d\u1ebbo ho\u00e0n to\u00e0n \u1edf gi\u1eefa. \u0110i\u1ec1u \u0111\u00f3 t\u1ea1o ra b\u00e1n k\u00ednh trong l\u1edbn h\u01a1n. B\u00e1n k\u00ednh l\u1edbn h\u01a1n ngh\u0129a l\u00e0 \u1ee9ng su\u1ea5t d\u1ebbo \u1edf c\u00e1c s\u1ee3i b\u1ec1 m\u1eb7t th\u1ea5p h\u01a1n. \u1ee8ng su\u1ea5t th\u1ea5p h\u01a1n ngh\u0129a l\u00e0 ph\u1ea7n bi\u1ebfn d\u1ea1ng \u0111\u00e0n h\u1ed3i chi\u1ebfm t\u1ef7 l\u1ec7 l\u1edbn h\u01a1n trong t\u1ed5ng bi\u1ebfn d\u1ea1ng.<\/p>\n\n\n\n

V\u00e0 bi\u1ebfn d\u1ea1ng \u0111\u00e0n h\u1ed3i ch\u00ednh l\u00e0 th\u1ee9 \u201cb\u1eadt l\u1ea1i\u201d.<\/p>\n\n\n\n

Gi\u1edd h\u00e3y x\u00e9t \u0111\u1ebfn nh\u00f4m. C\u00e1c h\u1ee3p kim nh\u00f4m d\u00f2ng 5000 c\u1ee9ng h\u01a1n c\u00f3 th\u1ec3 b\u1eadt l\u1ea1i h\u01a1n 5\u00b0 t\u00f9y thu\u1ed9c v\u00e0o b\u00e1n k\u00ednh v\u00e0 \u0111\u1ed9 t\u00f4i. C\u00f9ng m\u1ed9t khu\u00f4n V, nh\u01b0ng h\u1ee3p kim kh\u00e1c, v\u00e0 tam gi\u00e1c c\u1ee7a b\u1ea1n l\u1ea1i b\u1ecb m\u00e9o. Khu\u00f4n V r\u1ed9ng h\u01a1n, v\u1ed1n ho\u1ea1t \u0111\u1ed9ng \u1ed5n \u0111\u1ecbnh v\u1edbi th\u00e9p A36, gi\u1edd l\u1ea1i l\u00e0m t\u0103ng \u0111\u00e1ng k\u1ec3 hi\u1ec7n t\u01b0\u1ee3ng b\u1eadt l\u1ea1i tr\u00ean nh\u00f4m 5052-H32 v\u00ec m\u00f4\u2011\u0111un \u0111\u00e0n h\u1ed3i v\u00e0 \u0111\u1eb7c t\u00ednh ch\u1ea3y c\u1ee7a nh\u00f4m kh\u00e1c.<\/p>\n\n\n\n

V\u00ec v\u1eady khi b\u1ea1n n\u00f3i khu\u00f4n \u201cph\u1ed5 d\u1ee5ng\u201d, th\u1ef1c ra b\u1ea1n \u0111ang ch\u1ea5p nh\u1eadn \u0111\u1ec3 ba bi\u1ebfn s\u1ed1 li\u00ean k\u1ebft v\u1edbi nhau t\u1ef1 do thay \u0111\u1ed5i.<\/p>\n\n\n\n

V\u00e0 kh\u1ea9u \u0111\u1ed9 V qu\u00e1 r\u1ed9ng \u0111\u1ec3 ki\u1ec3m so\u00e1t ch\u1eb7t ch\u1ebd b\u00e1n k\u00ednh trong, n\u00ean gi\u00e1 tr\u1ecb tr\u1eeb u\u1ed1n c\u1ee7a b\u1ea1n l\u1ea1i thay \u0111\u1ed5i m\u1ed7i l\u1ea7n \u0111i\u1ec1u ch\u1ec9nh.<\/p>\n\n\n\n

N\u1ebfu tam gi\u00e1c \u0111\u00f3 kh\u00f4ng th\u1ec3 t\u00e1ch r\u1eddi, v\u1eady quy t\u1eafc \u201c8\u00d7 b\u1ec1 d\u00e0y\u201d c\u0169 xu\u1ea5t ph\u00e1t t\u1eeb \u0111\u00e2u \u2014 v\u00e0 li\u1ec7u n\u00f3 c\u00f2n \u0111\u00fang hay kh\u00f4ng?<\/p>\n\n\n\n

Quy t\u1eafc 8\u00d7 b\u1ec1 d\u00e0y: m\u1ed9t c\u01a1 s\u1edf tin c\u1eady hay ch\u1ec9 l\u00e0 huy\u1ec1n tho\u1ea1i l\u1ed7i th\u1eddi \u0111\u1ed1i v\u1edbi c\u00e1c lo\u1ea1i th\u00e9p c\u01b0\u1eddng \u0111\u1ed9 cao hi\u1ec7n \u0111\u1ea1i?<\/h3>\n\n\n\n

U\u1ed1n th\u00e9p m\u1ec1m 2 mm b\u1eb1ng khu\u00f4n V 16 mm \u2014 t\u1ee9c 8\u00d7 b\u1ec1 d\u00e0y. Th\u00f4ng th\u01b0\u1eddng b\u1ea1n s\u1ebd c\u00f3 b\u00e1n k\u00ednh trong kho\u1ea3ng 2,5 mm v\u00e0 \u0111\u1ed9 b\u1eadt l\u1ea1i ki\u1ec3m so\u00e1t \u0111\u01b0\u1ee3c, kho\u1ea3ng 1\u00b0 \u0111\u1ebfn 2\u00b0. Trong nhi\u1ec1u th\u1eadp k\u1ef7, quy t\u1eafc \u0111\u00f3 l\u00e0 \u201cc\u1ed7 m\u00e1y in ti\u1ec1n\u201d \u1edf c\u00e1c x\u01b0\u1edfng gia c\u00f4ng.<\/p>\n\n\n\n

Gi\u1edd h\u00e3y d\u00f9ng th\u00e9p c\u01b0\u1eddng \u0111\u1ed9 cao 2 mm c\u00f3 gi\u1edbi h\u1ea1n ch\u1ea3y 700 MPa trong c\u00f9ng khu\u00f4n V 16 mm \u0111\u00f3.<\/p>\n\n\n\n

L\u1ef1c \u00e9p t\u0103ng v\u1ecdt. \u0110\u1ed9 b\u1eadt l\u1ea1i t\u0103ng l\u00ean. Thay v\u00ec 2\u00b0, b\u1ea1n c\u00f3 th\u1ec3 th\u1ea5y 3\u00b0 ho\u1eb7c 4\u00b0. B\u1ea1n u\u1ed1n v\u01b0\u1ee3t g\u00f3c \u0111\u1ec3 b\u00f9, nh\u01b0ng do khu\u00f4n V t\u1ef7 l\u1ec7 qu\u00e1 l\u1edbn so v\u1edbi \u0111\u1ed9 b\u1ec1n ch\u1ea3y cao, v\u1eadt li\u1ec7u kh\u00f4ng ch\u1ea3y d\u1ebbo ho\u00e0n to\u00e0n xuy\u00ean su\u1ed1t chi\u1ec1u d\u00e0y nh\u01b0 th\u00e9p m\u1ec1m. B\u1ea1n \u0111ang u\u1ed1n trong m\u1ed9t h\u00ecnh h\u1ecdc \u0111\u01b0\u1ee3c \u201chi\u1ec7u ch\u1ec9nh\u201d cho v\u1eadt li\u1ec7u c\u00f3 250 MPa, ch\u1ee9 kh\u00f4ng ph\u1ea3i 700.<\/p>\n\n\n\n

Quy t\u1eafc 8\u00d7 gi\u1ea3 \u0111\u1ecbnh m\u1ed9t d\u1ea3i gi\u1edbi h\u1ea1n ch\u1ea3y h\u1eb9p v\u00e0 \u0111\u1ed9 d\u1ebbo c\u00f3 th\u1ec3 d\u1ef1 \u0111o\u00e1n \u0111\u01b0\u1ee3c. C\u00e1c lo\u1ea1i th\u00e9p hi\u1ec7n \u0111\u1ea1i \u0111\u00e3 ph\u00e1 v\u1ee1 gi\u1ea3 \u0111\u1ecbnh \u0111\u00f3.<\/p>\n\n\n\n

B\u1ea1n c\u00f3 th\u1ec3 thu h\u1eb9p khu\u00f4n V xu\u1ed1ng 6\u00d7 b\u1ec1 d\u00e0y \u0111\u1ec3 t\u0103ng m\u1ee9c bi\u1ebfn d\u1ea1ng v\u00e0 ki\u1ec1m ch\u1ebf b\u1eadt l\u1ea1i \u2014 nh\u01b0ng khi \u0111\u00f3 l\u1ef1c \u00e9p t\u0103ng v\u1ecdt. Tr\u00ean m\u00e1y 120 t\u1ea5n ch\u1ea1y g\u1ea7n gi\u1edbi h\u1ea1n, \u0111i\u1ec1u \u0111\u00f3 r\u1ea5t quan tr\u1ecdng. M\u00f2n khu\u00f4n t\u0103ng l\u00ean. \u00c1p su\u1ea5t vai khu\u00f4n cao h\u01a1n. Nguy c\u01a1 h\u1eb1n b\u1ec1 m\u1eb7t xu\u1ea5t hi\u1ec7n.<\/p>\n\n\n\n

Ph\u01b0\u01a1ng ph\u00e1p r\u00fat g\u1ecdn \u0111\u00f3 kh\u00f4ng sai. N\u00f3 ch\u1ec9 ch\u01b0a \u0111\u1ea7y \u0111\u1ee7.<\/p>\n\n\n\n

N\u1ebfu gi\u1edbi h\u1ea1n ch\u1ea3y v\u00e0 m\u00f4\u2011\u0111un \u0111\u00e0n h\u1ed3i thay \u0111\u1ed5i ph\u01b0\u01a1ng tr\u00ecnh b\u1eadt l\u1ea1i, \u0111i\u1ec1u g\u00ec x\u1ea3y ra khi b\u1ea1n thay \u0111\u1ed5i ho\u00e0n to\u00e0n ph\u01b0\u01a1ng ph\u00e1p u\u1ed1n?<\/p>\n\n\n\n

U\u1ed1n kh\u00f4ng ch\u1ea1m \u0111\u00e1y so v\u1edbi u\u1ed1n ch\u1ea1m \u0111\u00e1y: c\u00e1ch l\u1ef1a ch\u1ecdn khu\u00f4n c\u1ee7a b\u1ea1n vi\u1ebft l\u1ea1i ho\u00e0n to\u00e0n ph\u01b0\u01a1ng tr\u00ecnh b\u1eadt l\u1ea1i<\/h3>\n\n\n\n

H\u00e3y x\u00f3a b\u1ecf m\u1ed9t hi\u1ec3u l\u1ea7m.<\/p>\n\n\n\n

U\u1ed1n ch\u1ea1m \u0111\u00e1y kh\u00f4ng lo\u1ea1i b\u1ecf ho\u00e0n to\u00e0n b\u1eadt l\u1ea1i. T\u00f4i \u0111\u00e3 u\u1ed1n th\u00e9p m\u1ec1m 3 mm trong khu\u00f4n 90\u00b0 v\u00e0 v\u1eabn ph\u1ea3i m\u00e0i khu\u00f4n v\u1ec1 88\u00b0 m\u1edbi \u0111\u1ea1t \u0111\u01b0\u1ee3c chi ti\u1ebft 90\u00b0 th\u1eadt. V\u1eadt li\u1ec7u kh\u00f4ng th\u1ec3 \u201cqu\u00ean\u201d t\u00ednh \u0111\u00e0n h\u1ed3i ch\u1ec9 v\u00ec n\u00f3 \u0111\u00e3 ch\u1ea1m v\u00e0o th\u00e0nh khu\u00f4n.<\/p>\n\n\n\n

Nh\u01b0ng u\u1ed1n ch\u1ea1m \u0111\u00e1y thay \u0111\u1ed5i c\u01a1 h\u1ecdc c\u1ee7a qu\u00e1 tr\u00ecnh.<\/p>\n\n\n\n

Trong u\u1ed1n kh\u00f4ng ch\u1ea1m \u0111\u00e1y, g\u00f3c \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh b\u1edfi \u0111\u1ed9 s\u00e2u ch\u00e0y \u0111i v\u00e0o khu\u00f4n. Trong u\u1ed1n ch\u1ea1m \u0111\u00e1y, g\u00f3c \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh b\u1edfi h\u00ecnh h\u1ecdc c\u1ee7a khu\u00f4n. B\u1ea1n bu\u1ed9c v\u1eadt li\u1ec7u ph\u1ea3i tu\u00e2n theo g\u00f3c khu\u00f4n b\u1eb1ng l\u1ef1c \u00e9p cao h\u01a1n \u2014 th\u01b0\u1eddng g\u1ea5p 3 \u0111\u1ebfn 5 l\u1ea7n l\u1ef1c u\u1ed1n kh\u00f4ng ch\u1ea1m \u0111\u00e1y.<\/p>\n\n\n\n

L\u1ef1c cao h\u01a1n \u0111\u00f3 \u0111\u1ea9y nhi\u1ec1u ph\u1ea7n h\u01a1n c\u1ee7a ti\u1ebft di\u1ec7n v\u01b0\u1ee3t qua gi\u1edbi h\u1ea1n ch\u1ea3y, l\u00e0m gi\u1ea3m \u0111\u1ed9 h\u1ed3i ph\u1ee5c \u0111\u00e0n h\u1ed3i. Kh\u00f4ng lo\u1ea1i b\u1ecf h\u1eb3n. M\u00e0 l\u00e0 gi\u1ea3m b\u1edbt.<\/p>\n\n\n\n

S\u1ef1 \u0111\u00e1nh \u0111\u1ed5i l\u00e0 g\u00ec? Khu\u00f4n ri\u00eang cho t\u1eebng g\u00f3c. Nhi\u1ec1u \u00e1p l\u1ef1c h\u01a1n. M\u00f2n d\u1ee5ng c\u1ee5 nhi\u1ec1u h\u01a1n. Thay khu\u00f4n nhi\u1ec1u h\u01a1n. V\u1edbi c\u00e1c c\u00f4ng vi\u1ec7c s\u1ea3n xu\u1ea5t ng\u1eafn, b\u1ea1n m\u1ea5t th\u1eddi gian khi ph\u1ea3i thay khu\u00f4n v\u00e0 \u0111i\u1ec1u ch\u1ec9nh chi\u1ec1u cao \u0111\u00f3ng. V\u1edbi c\u00e1c chi ti\u1ebft s\u1ea3n l\u01b0\u1ee3ng l\u1edbn, y\u00eau c\u1ea7u dung sai ch\u1eb7t \u00b10,25\u00b0, b\u1ea1n l\u1ea1i \u0111\u1ea1t \u0111\u01b0\u1ee3c kh\u1ea3 n\u0103ng l\u1eb7p l\u1ea1i t\u1ed1t h\u01a1n.<\/p>\n\n\n\n

V\u00ec v\u1eady, \u0111\u00fang l\u00e0 \u00e9p s\u00e1t \u0111\u00e1y l\u00e0m thay \u0111\u1ed5i ho\u00e0n to\u00e0n ph\u01b0\u01a1ng tr\u00ecnh \u0111\u00e0n h\u1ed3i \u0111\u00e0n h\u1ed3i ng\u01b0\u1ee3c \u2014 nh\u01b0ng n\u00f3 c\u0169ng thay \u0111\u1ed5i c\u1ea3 b\u00e0i to\u00e1n kinh t\u1ebf thi\u1ebft l\u1eadp c\u1ee7a b\u1ea1n.<\/p>\n\n\n\n

Khi c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t d\u1ee5ng c\u1ee5 c\u1ea3nh b\u00e1o kh\u00f4ng n\u00ean u\u1ed1n \u00e9p \u0111\u00e1y m\u1ed9t c\u00e1ch t\u00f9y ti\u1ec7n, \u0111\u00f3 kh\u00f4ng ph\u1ea3i v\u00ec n\u00f3 kh\u00f4ng ch\u00ednh x\u00e1c. M\u00e0 v\u00ec vi\u1ec7c \u0111\u1ea9y 90 t\u1ea5n v\u00e0o ch\u1ed7 m\u00e0 ch\u1ec9 c\u1ea7n 30 t\u1ea5n s\u1ebd l\u00e0m l\u1ed9 ra bi\u1ebfn d\u1ea1ng c\u1ee7a m\u00e1y, s\u1ef1 kh\u00f4ng nh\u1ea5t qu\u00e1n c\u1ee7a ng\u01b0\u1eddi v\u1eadn h\u00e0nh v\u00e0 nh\u1eefng thi\u1ebfu s\u00f3t trong b\u1ea3o tr\u00ec.<\/p>\n\n\n\n

V\u00ec v\u1eady, b\u00e2y gi\u1edd b\u1ea1n \u0111ang ph\u1ea3i c\u00e2n b\u1eb1ng gi\u1eefa kh\u1ea3 n\u0103ng ch\u1ecbu l\u1ef1c, \u0111\u1ed9 l\u1eb7p l\u1ea1i v\u00e0 th\u1eddi gian thay \u0111\u1ed5i khu\u00f4n.<\/p>\n\n\n\n

V\u00e0 ngay khi b\u1ea1n ngh\u0129 r\u1eb1ng m\u00ecnh \u0111\u00e3 t\u00ednh \u0111\u1ebfn c\u1ea5p v\u1eadt li\u1ec7u v\u00e0 ph\u01b0\u01a1ng ph\u00e1p u\u1ed1n, v\u1eabn c\u00f2n m\u1ed9t bi\u1ebfn s\u1ed1 c\u00f3 th\u1ec3 khi\u1ebfn chi ti\u1ebft c\u1ee7a b\u1ea1n n\u1ee9t n\u1ebfu b\u1ea1n b\u1ecf qua n\u00f3.<\/p>\n\n\n\n

C\u00e1ch h\u01b0\u1edbng s\u1ee3i v\u1eadt li\u1ec7u bu\u1ed9c ph\u1ea3i thay \u0111\u1ed5i ngay l\u1eadp t\u1ee9c vi\u1ec7c ch\u1ecdn \u0111\u1ed9 m\u1edf V<\/h3>\n\n\n\n

L\u1ea5y v\u00ed d\u1ee5 th\u00e9p kh\u00f4ng g\u1ec9 304 d\u00e0y 4 mm. U\u1ed1n song song v\u1edbi h\u01b0\u1edbng c\u00e1n trong khu\u00f4n V 32 mm, b\u1ea1n c\u00f3 th\u1ec3 \u0111\u1ea1t g\u00f3c 90\u00b0 s\u1ea1ch v\u1edbi b\u00e1n k\u00ednh trong 5 mm.<\/p>\n\n\n\n

Xoay ph\u00f4i 90\u00b0 \u2014 u\u1ed1n vu\u00f4ng g\u00f3c v\u1edbi h\u01b0\u1edbng s\u1ee3i \u2014 v\u1edbi c\u00f9ng khu\u00f4n \u0111\u00f3.<\/p>\n\n\n\n

Gi\u1edd b\u1ea1n s\u1ebd th\u1ea5y hi\u1ec7n t\u01b0\u1ee3ng n\u1ee9t vi m\u00f4 tr\u00ean b\u1ec1 m\u1eb7t ngo\u00e0i.<\/p>\n\n\n\n

T\u1ea1i sao?<\/p>\n\n\n\n

Qu\u00e1 tr\u00ecnh c\u00e1n k\u00e9o d\u00e0i c\u1ea5u tr\u00fac s\u1ee3i. Khi b\u1ea1n u\u1ed1n vu\u00f4ng g\u00f3c v\u1edbi s\u1ee3i, b\u1ea1n \u0111ang k\u00e9o gi\u00e3n c\u00e1c c\u1ea5u tr\u00fac k\u00e9o d\u00e0i \u0111\u00f3 m\u1ea1nh h\u01a1n. \u0110\u1ed9 d\u1ebbo c\u1ee7a v\u1eadt li\u1ec7u gi\u1ea3m theo h\u01b0\u1edbng \u0111\u00f3. C\u00f9ng \u0111\u1ed9 d\u00e0y. C\u00f9ng khu\u00f4n. Nh\u01b0ng h\u00e0nh vi g\u00e3y n\u1ee9t l\u1ea1i kh\u00e1c nhau.<\/p>\n\n\n\n

Thu h\u1eb9p khu\u00f4n V xu\u1ed1ng 24 mm \u0111\u1ec3 gi\u1ea3m b\u00e1n k\u00ednh trong v\u00e0 t\u0103ng bi\u1ebfn d\u1ea1ng \u2014 b\u1ea1n c\u00f3 th\u1ec3 ki\u1ec3m so\u00e1t \u0111\u00e0n h\u1ed3i ng\u01b0\u1ee3c t\u1ed1t h\u01a1n \u2014 nh\u01b0ng \u0111\u1ed3ng th\u1eddi t\u0103ng bi\u1ebfn d\u1ea1ng s\u1ee3i ngo\u00e0i v\u00e0 l\u00e0m n\u1ee9t t\u1ec7 h\u01a1n khi u\u1ed1n vu\u00f4ng g\u00f3c v\u1edbi s\u1ee3i. M\u1edf r\u1ed9ng khu\u00f4n V l\u00ean 40 mm th\u00ec gi\u1ea3m bi\u1ebfn d\u1ea1ng, b\u1ea3o v\u1ec7 b\u1ec1 m\u1eb7t, nh\u01b0ng l\u1ea1i t\u0103ng \u0111\u00e0n h\u1ed3i ng\u01b0\u1ee3c v\u00e0 b\u00e1n k\u00ednh.<\/p>\n\n\n\n

Kh\u00f4ng c\u00f3 l\u1ef1a ch\u1ecdn trung l\u1eadp n\u00e0o c\u1ea3.<\/p>\n\n\n\n

H\u01b0\u1edbng s\u1ee3i v\u1eadt li\u1ec7u kh\u00f4ng ph\u1ea3i l\u00e0 ghi ch\u00fa nh\u1ecf. N\u00f3 l\u00e0 m\u1ec7nh l\u1ec7nh ph\u1ea3i xem x\u00e9t l\u1ea1i ngay l\u1eadp t\u1ee9c \u0111\u1ed9 m\u1edf V.<\/p>\n\n\n\n

V\u00e0 khi b\u1ea1n ch\u1ea5p nh\u1eadn r\u1eb1ng \u0111\u1ed9 m\u1edf V, gi\u1edbi h\u1ea1n ch\u1ea3y, ph\u01b0\u01a1ng ph\u00e1p u\u1ed1n v\u00e0 h\u01b0\u1edbng s\u1ee3i \u0111\u1ec1u \u0111ang c\u00f9ng t\u00e1c \u0111\u1ed9ng l\u00ean m\u1ed9t t\u1ea5m kim lo\u1ea1i, th\u00ec kh\u00e1i ni\u1ec7m v\u1ec1 \u201ckhu\u00f4n ti\u00eau chu\u1ea9n\u201d tr\u00f4ng kh\u00f4ng c\u00f2n gi\u1ed1ng hi\u1ec7u qu\u1ea3 n\u1eefa, m\u00e0 gi\u1ed1ng nh\u01b0 \u0111ang \u0111\u00e1nh c\u01b0\u1ee3c b\u1eb1ng ti\u1ec1n c\u1ee7a x\u01b0\u1edfng.<\/p>\n\n\n\n

V\u00ec v\u1eady, n\u1ebfu h\u00ecnh h\u1ecdc quy\u1ebft \u0111\u1ecbnh \u0111\u1ed3ng th\u1eddi l\u1ef1c \u00e9p, b\u00e1n k\u00ednh, bi\u1ebfn d\u1ea1ng v\u00e0 r\u1ee7i ro g\u00e3y, th\u00ec vi\u1ec7c ch\u1ecdn khu\u00f4n s\u1ebd tr\u00f4ng nh\u01b0 th\u1ebf n\u00e0o n\u1ebfu \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n nh\u01b0 c\u00e1ch m\u1ed9t th\u1ee3 m\u00e1y ch\u1ecdn m\u00f4-men xi\u1ebft \u2014 c\u00f3 ch\u1ee7 \u0111\u00edch, theo t\u1eebng v\u1eadt li\u1ec7u, t\u1eebng \u0111\u1ed9 d\u00e0y, m\u1ed7i l\u1ea7n m\u1ed9t ki\u1ec3u?<\/p>\n\n\n\n

V\u01b0\u1ee3t ra ngo\u00e0i khu\u00f4n V: So s\u00e1nh c\u00e1c lo\u1ea1i d\u1ee5ng c\u1ee5 chuy\u00ean bi\u1ec7t cho h\u00ecnh d\u1ea1ng ph\u1ee9c t\u1ea1p<\/h2>\n\n\n\n

Th\u00e1ng tr\u01b0\u1edbc t\u00f4i \u0111\u00e3 th\u1ea5y m\u1ed9t x\u01b0\u1edfng m\u1ea5t 3 gi\u1edd \u0111\u1ec3 u\u1ed1n t\u1eebng \u0111o\u1ea1n 6 mm b\u00e1n k\u00ednh trong tr\u00ean th\u00e9p A36 d\u00e0y 4 mm v\u1edbi chi\u1ec1u d\u00e0i 2,4 m. N\u0103m l\u1ea7n g\u00f5 cho m\u1ed7i m\u00e9p g\u1ea5p. M\u00e0i nh\u1eb9 gi\u1eefa c\u00e1c chi ti\u1ebft v\u00ec vai khu\u00f4n \u0111\u1ec3 l\u1ea1i v\u1ebft. V\u1edbi chi ph\u00ed m\u00e1y $85 m\u1ed7i gi\u1edd, t\u1ed5ng c\u1ed9ng kho\u1ea3ng $255 tr\u01b0\u1edbc khi t\u00ednh ph\u1ebf ph\u1ea9m t\u1eeb hai chi ti\u1ebft b\u1ecb h\u1edf 1,5\u00b0 \u1edf l\u1ea7n \u00e9p cu\u1ed1i.<\/p>\n\n\n\n

B\u1ea1n mu\u1ed1n m\u1ed9t c\u01a1 s\u1edf \u0111\u1ec3 ch\u1ecdn \u0111\u00fang khu\u00f4n V \u01b0? H\u00e3y b\u1eaft \u0111\u1ea7u t\u1eeb \u0111\u00e2y:<\/p>\n\n\n\n

    \n
  1. X\u00e1c \u0111\u1ecbnh b\u00e1n k\u00ednh trong y\u00eau c\u1ea7u v\u00e0 dung sai (\u00b10,5\u00b0 kh\u00f4ng ph\u1ea3i l\u00e0 \u00b10,25\u00b0).<\/li>\n\n\n\n
  2. X\u00e1c nh\u1eadn c\u1ea5p v\u1eadt li\u1ec7u, gi\u1edbi h\u1ea1n ch\u1ea3y v\u00e0 h\u01b0\u1edbng s\u1ee3i.<\/li>\n\n\n\n
  3. T\u00ednh to\u00e1n l\u1ef1c \u00e9p tr\u00ean m\u1ed7i m\u00e9t cho u\u1ed1n kh\u00f4ng ch\u1ea1m (air bend) so v\u1edbi u\u1ed1n ch\u1ea1m \u0111\u00e1y (bottoming).<\/li>\n\n\n\n
  4. Ki\u1ec3m tra gi\u1edbi h\u1ea1n c\u1ee7a m\u00e1y: l\u1ef1c \u00e9p, chi\u1ec1u cao m\u1edf, chi\u1ec1u d\u00e0i b\u00e0n m\u00e1y, \u0111\u1ed9 v\u00f5ng.<\/li>\n\n\n\n
  5. Ch\u1ec9 sau \u0111\u00f3 m\u1edbi ch\u1ecdn h\u00ecnh d\u1ea1ng: V \u0111\u01a1n, V \u0111a, c\u1ed5 ng\u1ed7ng, g\u00f3c nh\u1ecdn, b\u00e1n k\u00ednh, g\u1ea5p m\u00e9p.<\/li>\n<\/ol>\n\n\n\n

    H\u00e3y ch\u00fa \u00fd \u0111\u1ebfn ph\u1ea7n cu\u1ed1i c\u00f9ng. H\u00ecnh d\u1ea1ng h\u1ecdc. B\u1edfi v\u00ec khi b\u00e1n k\u00ednh, ph\u00e2n b\u1ed1 \u1ee9ng su\u1ea5t v\u00e0 kh\u1ea3 n\u0103ng va ch\u1ea1m \u0111\u00e3 \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh, th\u00ec V \u201cchu\u1ea9n\u201d kh\u00f4ng c\u00f2n l\u00e0 m\u1eb7c \u0111\u1ecbnh n\u1eefa m\u00e0 ch\u1ec9 l\u00e0 m\u1ed9t l\u1ef1a ch\u1ecdn trong s\u1ed1 nhi\u1ec1u l\u1ef1a ch\u1ecdn.<\/p>\n\n\n\n

    M\u1ed9t c\u00e1i m\u1ecf l\u1ebft c\u00f3 th\u1ec3 v\u1eb7n m\u1ecdi con \u1ed1c trong \u0111\u1ed9ng c\u01a1. Nh\u01b0ng n\u00f3 c\u0169ng s\u1ebd l\u00e0m tr\u00f2n \u0111\u1ea7u ch\u00fang t\u1eebng c\u00e1i m\u1ed9t.<\/p>\n\n\n\n

    Quy t\u1eafc x\u01b0\u1edfng s\u1ea3n xu\u1ea5t:<\/strong> N\u1ebfu h\u00ecnh d\u1ea1ng chi ti\u1ebft bu\u1ed9c b\u1ea1n ph\u1ea3i th\u1ef1c hi\u1ec7n th\u00eam c\u00e1c l\u1ea7n ch\u1ea5n, ch\u1ec9nh s\u1eeda ho\u1eb7c thi\u1ebft l\u1eadp ph\u1ee5, th\u00ec h\u00ecnh d\u1ea1ng khu\u00f4n l\u00e0 sai \u2014 kh\u00f4ng ph\u1ea3i do ng\u01b0\u1eddi v\u1eadn h\u00e0nh.<\/p>\n\n\n\n

    B\u00e2y gi\u1edd h\u00e3y c\u00f9ng so s\u00e1nh n\u01a1i m\u00e0 khu\u00f4n V ti\u00eau chu\u1ea9n th\u1ef1c s\u1ef1 khi\u1ebfn b\u1ea1n m\u1ea5t ti\u1ec1n.<\/p>\n\n\n\n

    Khu\u00f4n V \u0111\u01a1n so v\u1edbi khu\u00f4n V \u0111a: \u0111\u1ed5i n\u0103ng su\u1ea5t ch\u1ecbu t\u1ea3i l\u1edbn v\u00e0 \u0111\u1ed9 ch\u00ednh x\u00e1c l\u1ea5y s\u1ef1 ti\u1ec7n l\u1ee3i khi thi\u1ebft l\u1eadp<\/h3>\n\n\n\n

    M\u1ed9t khu\u00f4n V \u0111\u01a1n 32 mm b\u1eb1ng th\u00e9p d\u1ee5ng c\u1ee5 60 HRC c\u00f3 th\u1ec3 u\u1ed1n kh\u00f4ng ch\u1ea1m th\u00e9p m\u1ec1m 6 mm c\u1ea3 ng\u00e0y. Kh\u1ea3 n\u0103ng ch\u1ecbu t\u1ea3i cao. \u0110\u1ed9 v\u00f5ng t\u1ed1i thi\u1ec3u. Vai u\u1ed1n s\u1eafc n\u00e9t.<\/p>\n\n\n\n

    Gi\u1edd h\u00e3y \u0111\u1eb7t c\u00f9ng c\u00f4ng vi\u1ec7c \u0111\u00f3 tr\u00ean kh\u1ed1i khu\u00f4n V \u0111a c\u00f3 c\u00e1c khe m\u1edf 16, 22, 32 v\u00e0 40 mm x\u1ebfp trong c\u00f9ng m\u1ed9t th\u00e2n.<\/p>\n\n\n\n

    Thi\u1ebft l\u1eadp nhanh. Tr\u01b0\u1ee3t, k\u1eb9p, ch\u1ecdn r\u00e3nh. V\u1edbi c\u00f4ng vi\u1ec7c 10 chi ti\u1ebft b\u1eb1ng th\u00e9p A36 3 mm h\u00f4m nay v\u00e0 5052 2 mm ng\u00e0y mai, c\u1ea3m gi\u00e1c r\u1ea5t hi\u1ec7u qu\u1ea3.<\/p>\n\n\n\n

    Nh\u01b0ng \u0111\u00e2y l\u00e0 c\u01a1 ch\u1ebf b\u1ea1n th\u01b0\u1eddng b\u1ecf qua: khu\u00f4n V \u0111a t\u1eadp trung nhi\u1ec1u \u1ee9ng su\u1ea5t h\u01a1n trong th\u00e2n khu\u00f4n h\u1eb9p h\u01a1n. Kh\u1ed1i l\u01b0\u1ee3ng v\u1eadt li\u1ec7u \u00edt h\u01a1n b\u00ean d\u01b0\u1edbi m\u1ed7i khe ngh\u0129a l\u00e0 \u0111\u1ed9 n\u00e9n c\u1ee5c b\u1ed9 t\u0103ng l\u00ean d\u01b0\u1edbi 80\u2013100 t\u1ea5n m\u1ed7i m\u00e9t. Tr\u00ean b\u00e0n 3 m, ch\u1ec9 c\u1ea7n 0,1 mm ch\u00eanh l\u1ec7ch n\u00e9n d\u1ecdc chi\u1ec1u cao \u0111\u00e3 l\u00e0m thay \u0111\u1ed5i g\u00f3c u\u1ed1n d\u1ecdc chi\u1ec1u d\u00e0i. \u0110i\u1ec1u \u0111\u00f3 bi\u1ec3u hi\u1ec7n th\u00e0nh sai l\u1ec7ch g\u00f3c 0,5\u00b0 \u0111\u1ebfn 1\u00b0 t\u1eeb \u0111\u1ea7u n\u00e0y t\u1edbi \u0111\u1ea7u kia.<\/p>\n\n\n\n

    Khu\u00f4n V \u0111\u01a1n d\u00e0y h\u01a1n. Nhi\u1ec1u v\u1eadt li\u1ec7u h\u01a1n b\u00ean d\u01b0\u1edbi r\u00e3nh. \u00cdt n\u00e9n h\u01a1n. \u0110\u1ed9 \u1ed5n \u0111\u1ecbnh g\u00f3c t\u1ed1t h\u01a1n trong c\u00e1c lo\u1ea1t d\u00e0i.<\/p>\n\n\n\n

    V\u1edbi v\u1eadt li\u1ec7u d\u00e0y ho\u1eb7c c\u00f3 c\u01b0\u1eddng \u0111\u1ed9 cao \u2014 ch\u1eb3ng h\u1ea1n th\u00e9p 8 mm, 700 MPa \u2014 kh\u1ed1i l\u01b0\u1ee3ng \u0111\u00f3 r\u1ea5t quan tr\u1ecdng. M\u1ed9t khu\u00f4n V \u0111\u01a1n chuy\u00ean d\u1ee5ng ph\u00e2n b\u1ed1 t\u1ea3i \u0111\u1ec1u h\u01a1n, gi\u1ea3m m\u00e0i m\u00f2n khu\u00f4n v\u00e0 duy tr\u00ec \u0111\u1ed9 l\u1eb7p l\u1ea1i g\u00f3c trong h\u00e0ng tr\u0103m l\u1ea7n ch\u1ea5n. Khu\u00f4n V \u0111a v\u1eabn th\u1ef1c hi\u1ec7n \u0111\u01b0\u1ee3c c\u00f4ng vi\u1ec7c, nh\u01b0ng b\u1ea1n s\u1ebd th\u1ea5y vai khu\u00f4n m\u00f2n s\u1edbm h\u01a1n, v\u00e0 c\u1ea7n ch\u1ec9nh g\u00f3c th\u01b0\u1eddng xuy\u00ean h\u01a1n.<\/p>\n\n\n\n

    V\u1eady c\u00e1i n\u00e0o th\u1eafng?<\/p>\n\n\n\n

    Lo\u1ea1t nh\u1ecf, thay \u0111\u1ed5i \u0111\u1ed9 d\u00e0y v\u1eadt li\u1ec7u: khu\u00f4n V \u0111a ti\u1ebft ki\u1ec7m 10\u201315 ph\u00fat thay khu\u00f4n. Lo\u1ea1t l\u1edbn, t\u1ea3i cao, dung sai ch\u1eb7t \u00b10,25\u00b0: khu\u00f4n V \u0111\u01a1n b\u00f9 l\u1ea1i b\u1eb1ng \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh v\u00e0 tu\u1ed5i th\u1ecd d\u1ee5ng c\u1ee5.<\/p>\n\n\n\n

    Khu\u00f4n V kh\u00f4ng ph\u1ea3i k\u1ebb x\u1ea5u. Th\u00f3i quen d\u00f9ng m\u1ed9t ki\u1ec3u cho m\u1ecdi quy m\u00f4 s\u1ea3n xu\u1ea5t m\u1edbi l\u00e0 v\u1ea5n \u0111\u1ec1.<\/p>\n\n\n\n

    Nh\u01b0ng s\u1ef1 va ch\u1ea1m th\u00ec kh\u00f4ng quan t\u00e2m \u0111\u1ebfn s\u1ef1 ti\u1ec7n l\u1ee3i c\u1ee7a b\u1ea1n.<\/p>\n\n\n\n

    Khu\u00f4n c\u1ed5 ng\u1ed7ng so v\u1edbi khu\u00f4n V ti\u00eau chu\u1ea9n: chi\u1ebfn th\u1eafng hi\u1ec7n t\u01b0\u1ee3ng va ch\u1ea1m m\u00e9p \u1edf c\u00e1c h\u1ed9p s\u00e2u v\u00e0 g\u1ea5p ng\u01b0\u1ee3c<\/h3>\n\n\n\n

    H\u00e3y h\u00ecnh dung m\u1ed9t h\u1ed9p \u0111i\u1ec7n s\u00e2u 150 mm. B\u1ea1n t\u1ea1o hai m\u00e9p \u0111\u1ea7u ti\u00ean b\u1eb1ng khu\u00f4n V 24 mm. S\u1ea1ch. Vu\u00f4ng v\u1ee9c.<\/p>\n\n\n\n

    Gi\u1edd h\u00e3y th\u1eed \u0111\u1ebfn ch\u1ed7 u\u1ed1n th\u1ee9 ba.<\/p>\n\n\n\n

    Th\u00e0nh b\u00ean va v\u00e0o th\u00e2n ch\u00e0y tr\u01b0\u1edbc khi b\u1ea1n \u0111\u1ea1t 90\u00b0. B\u1ea1n d\u1ecbch chuy\u1ec3n chi ti\u1ebft. B\u1ea1n gian l\u1eadn g\u00f3c u\u1ed1n. B\u1ea1n u\u1ed1n \u0111\u1ebfn 88\u00b0 v\u00e0 hy v\u1ecdng \u0111\u1ed9 b\u1eadt ng\u01b0\u1ee3c s\u1ebd \u0111\u01b0a b\u1ea1n \u0111\u1ebfn g\u1ea7n.<\/p>\n\n\n\n

    B\u1ea1n \u0111\u00e3 u\u1ed1n n\u00f3 \u0111\u1ebfn 88\u00b0.<\/p>\n\n\n\n

    V\u1ea5n \u0111\u1ec1 kh\u00f4ng n\u1eb1m \u1edf vi\u1ec7c ki\u1ec3m so\u00e1t g\u00f3c. M\u00e0 l\u00e0 kho\u1ea3ng h\u1edf c\u1ed5 h\u1ecdng.<\/p>\n\n\n\n

    M\u1ed9t ch\u00e0y c\u1ed5 ng\u1ed7ng \u2014 v\u1edbi h\u00ecnh d\u1ea1ng th\u00e2n \u0111\u01b0\u1ee3c kho\u00e9t r\u1ed7ng \u2014 cho ph\u00e9p m\u00e9p u\u1ed1n \u0111i l\u00ean m\u00e0 kh\u00f4ng va ch\u1ea1m. Kho\u1ea3ng h\u1edf \u0111\u00f3 cho ph\u00e9p b\u1ea1n \u00e9p ch\u00e0y \u0111\u1ee7 s\u00e2u \u0111\u1ec3 ki\u1ec3m so\u00e1t g\u00f3c ch\u00ednh x\u00e1c, ngay c\u1ea3 v\u1edbi c\u00e1c ki\u1ec3u u\u1ed1n ng\u01b0\u1ee3c ho\u1eb7c d\u1ea1ng Z.<\/p>\n\n\n\n

    C\u00e1c ch\u00e0y ti\u00eau chu\u1ea9n bu\u1ed9c ph\u1ea3i th\u1ecfa hi\u1ec7p: u\u1ed1n thi\u1ebfu \u0111\u1ec3 tr\u00e1nh va ch\u1ea1m, r\u1ed3i l\u1ea1i b\u00f9 qu\u00e1 \u1edf ch\u1ed7 kh\u00e1c. M\u1ed7i l\u1ea7n b\u00f9 l\u00e0m thay \u0111\u1ed5i gi\u00e1 tr\u1ecb kh\u1ea5u tr\u1eeb khi u\u1ed1n. M\u1ed7i thay \u0111\u1ed5i l\u1ea1i t\u1ea1o sai s\u1ed1 t\u00edch l\u0169y tr\u00ean m\u1ed9t h\u1ed9p c\u00f3 b\u1ed1n c\u1ea1nh.<\/p>\n\n\n\n

    D\u1ee5ng c\u1ee5 ch\u00e0y c\u1ed5 ng\u1ed7ng c\u00f3 chi ph\u00ed ban \u0111\u1ea7u cao h\u01a1n. Nh\u01b0ng n\u00f3 c\u0169ng lo\u1ea1i b\u1ecf \u0111i\u1ec7u \u201cnh\u1ea3y\u201d c\u1ee7a vi\u1ec7c u\u1ed1n t\u1eebng ph\u1ea7n, l\u1eadt chi ti\u1ebft, ho\u1eb7c ph\u1ea3i chia m\u1ed9t h\u1ed9p ph\u1ee9c t\u1ea1p th\u00e0nh hai c\u00f4ng \u0111o\u1ea1n.<\/p>\n\n\n\n

    N\u1ebfu ng\u01b0\u1eddi v\u1eadn h\u00e0nh c\u1ee7a b\u1ea1n \u0111ang nghi\u00eang ph\u00f4i \u0111\u1ec3 \u201cl\u00e1ch qua\u201d th\u00e2n ch\u00e0y, ngh\u0129a l\u00e0 b\u1ea1n \u0111\u00e3 ph\u1ea3i tr\u1ea3 gi\u00e1 cho h\u00ecnh h\u1ecdc sai r\u1ed3i.<\/p>\n\n\n\n

    Nh\u01b0ng n\u1ebfu ch\u00ednh g\u00f3c u\u1ed1n l\u00e0 gi\u1edbi h\u1ea1n th\u00ec sao?<\/p>\n\n\n\n

    Khu\u00f4n g\u00f3c nh\u1ecdn: gi\u1ea3i quy\u1ebft gi\u1edbi h\u1ea1n g\u00f3c v\u00e0 l\u00fd do v\u00ec sao b\u1ea1n kh\u00f4ng th\u1ec3 ch\u1ec9 \u0111\u01a1n gi\u1ea3n \u0111\u00f3ng ch\u1eb7t khu\u00f4n V ti\u00eau chu\u1ea9n h\u01a1n<\/h3>\n\n\n\n

    T\u00f4i \u0111\u00e3 th\u1ea5y nhi\u1ec1u ng\u01b0\u1eddi v\u1eadn h\u00e0nh c\u1ed1 g\u1eafng t\u1ea1o g\u00f3c 30\u00b0 b\u1eb1ng khu\u00f4n V 88\u00b0 ti\u00eau chu\u1ea9n ch\u1ec9 b\u1eb1ng c\u00e1ch \u00e9p ch\u00e0y s\u00e2u h\u01a1n.<\/p>\n\n\n\n

    H\u1ecd ch\u1ea1m \u0111\u00e1y. H\u1ecd l\u00e0m h\u1eb1n vai khu\u00f4n. H\u1ecd l\u00e0m t\u0103ng m\u1ea1nh l\u1ef1c \u00e9p.<\/p>\n\n\n\n

    \u0110\u00e2y l\u00e0 l\u00fd do th\u1ea5t b\u1ea1i: trong u\u1ed1n t\u1ef1 do, g\u00f3c \u0111\u01b0\u1ee3c \u0111i\u1ec1u khi\u1ec3n b\u1edfi \u0111\u1ed9 s\u00e2u ch\u00e0y so v\u1edbi kh\u1ea9u \u0111\u1ed9 V. Nh\u01b0ng khi m\u0169i ch\u00e0y ti\u1ebfn qu\u00e1 g\u1ea7n hai vai khu\u00f4n, b\u1ea1n chuy\u1ec3n d\u1ea7n sang u\u1ed1n ch\u1ea1m \u0111\u00e1y m\u00e0 kh\u00f4ng kh\u1edbp v\u1edbi h\u00ecnh d\u1ea1ng khu\u00f4n. V\u1eadt li\u1ec7u b\u1ecb \u00e9p v\u00e0o nh\u1eefng b\u1ec1 m\u1eb7t kh\u00f4ng \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf cho g\u00f3c t\u01b0\u01a1ng \u1ee9ng \u0111\u00f3. \u00c1p l\u1ef1c t\u0103ng v\u1ecdt \u2014 th\u01b0\u1eddng g\u1ea5p 3 l\u1ea7n l\u1ef1c u\u1ed1n t\u1ef1 do \u2014 m\u00e0 g\u00f3c v\u1eabn kh\u00f4ng \u1ed5n \u0111\u1ecbnh.<\/p>\n\n\n\n

    M\u1ed9t khu\u00f4n g\u00f3c nh\u1ecdn \u2014 v\u00ed d\u1ee5 30\u00b0 ho\u1eb7c 45\u00b0 \u2014 thay \u0111\u1ed5i h\u00ecnh h\u1ecdc ti\u1ebfp x\u00fac. V\u1eadt li\u1ec7u \u0111\u01b0\u1ee3c \u0111\u1ee1 tr\u00ean c\u00e1c m\u1eb7t ph\u00f9 h\u1ee3p v\u1edbi g\u00f3c m\u1ee5c ti\u00eau, cho ph\u00e9p u\u1ed1n ch\u1ea1m \u0111\u00e1y c\u00f3 ki\u1ec3m so\u00e1t v\u1edbi m\u1ee9c b\u1eadt ng\u01b0\u1ee3c \u0111\u01b0\u1ee3c gi\u1ea3m d\u1ef1 \u0111o\u00e1n \u0111\u01b0\u1ee3c.<\/p>\n\n\n\n

    C\u01a1 ch\u1ebf r\u1ea5t quan tr\u1ecdng: v\u1edbi d\u1ee5ng c\u1ee5 g\u00f3c nh\u1ecdn, ph\u1ea7n l\u1edbn ti\u1ebft di\u1ec7n v\u1eadt li\u1ec7u ch\u1ea3y theo chi\u1ec1u d\u00e0y \u1edf \u0111\u00fang g\u00f3c u\u1ed1n. V\u1edbi khu\u00f4n V ti\u00eau chu\u1ea9n b\u1ecb \u00e9p ch\u1eb7t, b\u1ea1n s\u1ebd c\u00f3 v\u00f9ng \u1ee9ng su\u1ea5t c\u1ee5c b\u1ed9 qu\u00e1 m\u1ee9c g\u1ea7n vai v\u00e0 \u0111\u1ed9 h\u1ed3i \u0111\u00e0n h\u1ed3i kh\u00f4ng \u0111\u1ed3ng \u0111\u1ec1u.<\/p>\n\n\n\n

    N\u1ebfu b\u1ea1n c\u1ea7n sai s\u1ed1 \u00b10,25\u00b0 tr\u00ean m\u00e9p 30\u00b0 trong th\u00e9p kh\u00f4ng g\u1ec9 d\u00e0y 3\u202fmm, th\u00ec khu\u00f4n g\u00f3c nh\u1ecdn kh\u00f4ng c\u00f2n l\u00e0 t\u00f9y ch\u1ecdn. \u0110\u00f3 l\u00e0 h\u00ecnh h\u1ecdc duy nh\u1ea5t gi\u00fap h\u01b0\u1edbng l\u1ef1c tr\u00f9ng v\u1edbi g\u00f3c cu\u1ed1i c\u00f9ng.<\/p>\n\n\n\n

    C\u1ed1 g\u1eafng \u201cch\u1ec9 \u0111\u00f3ng khu\u00f4n V ch\u1eb7t h\u01a1n\u201d ch\u1eb3ng kh\u00e1c n\u00e0o d\u00f9ng c\u1edd l\u00ea 24\u202fmm cho bu l\u00f4ng 19\u202fmm r\u1ed3i \u0111\u00e8 m\u1ea1nh h\u01a1n.<\/p>\n\n\n\n

    V\u00e0 r\u1ed3i c\u00f2n v\u1ea5n \u0111\u1ec1 v\u1ec1 b\u1ec1 m\u1eb7t.<\/p>\n\n\n\n

    Khu\u00f4n bo g\u00f3c v\u00e0 khu\u00f4n g\u1eadp m\u00e9p: tho\u00e1t kh\u1ecfi c\u00e1i b\u1eaby hai c\u00f4ng \u0111o\u1ea1n v\u00e0 lo\u1ea1i b\u1ecf h\u01b0 h\u1ea1i b\u1ec1 m\u1eb7t do u\u1ed1n g\u1ee3n<\/h3>\n\n\n\n

    L\u1ea5y v\u00ed d\u1ee5 th\u00e9p kh\u00f4ng g\u1ec9 304 d\u00e0y 3\u202fmm, y\u00eau c\u1ea7u b\u00e1n k\u00ednh trong 8\u202fmm, d\u00e0i 2\u202fm, b\u1ec1 m\u1eb7t trang tr\u00ed.<\/p>\n\n\n\n

    Ph\u01b0\u01a1ng ph\u00e1p ti\u00eau chu\u1ea9n v\u1edbi khu\u00f4n ch\u1eef V? U\u1ed1n g\u1eadp nh\u1ea5p t\u1eebng \u0111o\u1ea1n. B\u1ed1n ho\u1eb7c n\u0103m l\u1ea7n \u0111\u1eadp d\u1ecdc theo cung.<\/p>\n\n\n\n

    M\u1ed7i l\u1ea7n \u0111\u1eadp t\u1ea1o ra m\u1ed9t m\u1eb7t ph\u1eb3ng nh\u1ecf. M\u1ed7i m\u1eb7t ph\u1eb3ng c\u1ea7n \u0111\u01b0\u1ee3c l\u00e0m m\u1ecbn. Tr\u00ean th\u00e9p kh\u00f4ng g\u1ec9, m\u1ed7i l\u1ea7n ti\u1ebfp x\u00fac vai khu\u00f4n \u0111\u1ec1u c\u00f3 nguy c\u01a1 b\u1ecb tr\u1ea7y x\u01b0\u1edbc. Nh\u01b0ng m\u1ed7i l\u1ea7n b\u1ea1n tr\u01b0\u1ee3t v\u00e0 bo tr\u00f2n m\u00e9p, b\u1ea1n s\u1ebd ph\u1ea3i tr\u1ea3 gi\u00e1 cho s\u1ef1 ti\u1ec7n l\u1ee3i \u0111\u00f3 sau n\u00e0y.<\/p>\n\n\n\n

    M\u1ed9t khu\u00f4n chuy\u00ean d\u1ee5ng c\u00f3 b\u00e1n k\u00ednh kh\u1edbp v\u1edbi bi\u00ean d\u1ea1ng 8 mm. M\u1ed9t l\u1ea7n \u00e9p \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t t\u1ea1o th\u00e0nh cung cong. L\u1ef1c ti\u1ebfp x\u00fac \u0111\u01b0\u1ee3c ph\u00e2n b\u1ed1 d\u1ecdc theo b\u00e1n k\u00ednh thay v\u00ec t\u1eadp trung \u1edf hai vai khu\u00f4n. \u00c1p su\u1ea5t b\u1ec1 m\u1eb7t tr\u00ean m\u1ed7i milim\u00e9t vu\u00f4ng gi\u1ea3m xu\u1ed1ng. V\u1ebft h\u1eb1n gi\u1ea3m theo.<\/p>\n\n\n\n

    \u0110\u00fang l\u00e0 l\u1ef1c u\u1ed1n t\u0103ng l\u00ean so v\u1edbi u\u1ed1n gi\u00f3i ch\u1eef V r\u1ed9ng v\u00ec b\u1ea1n t\u00e1c \u0111\u1ed9ng v\u00e0o nhi\u1ec1u v\u1eadt li\u1ec7u c\u00f9ng l\u00fac. B\u1ea1n ph\u1ea3i x\u00e1c nh\u1eadn kh\u1ea3 n\u0103ng ch\u1ecbu t\u1ea3i v\u00e0 \u0111\u1ed9 v\u00f5ng c\u1ee7a m\u00e1y. Nh\u01b0ng th\u1eddi gian chu k\u1ef3 gi\u1ea3m t\u1eeb n\u0103m l\u1ea7n c\u00f2n m\u1ed9t. \u0110\u1ed9 l\u1eb7p l\u1ea1i c\u1ee7a g\u00f3c v\u00e0 b\u00e1n k\u00ednh ch\u1eb7t ch\u1ebd h\u01a1n. Ph\u1ebf ph\u1ea9m do l\u1ed7i th\u1ea9m m\u1ef9 gi\u1ea3m g\u1ea7n b\u1eb1ng 0 n\u1ebfu khu\u00f4n \u0111\u01b0\u1ee3c \u0111\u00e1nh b\u00f3ng v\u00e0 c\u0103n ch\u1ec9nh ch\u00ednh x\u00e1c.<\/p>\n\n\n\n

    G\u1ea5p m\u00e9p c\u0169ng t\u01b0\u01a1ng t\u1ef1. U\u1ed1n gi\u00f3i \u0111\u1ebfn 30\u00b0, r\u1ed3i \u00e9p ph\u1eb3ng trong khu\u00f4n g\u1ea5p m\u00e9p c\u00f3 h\u1ed1c ph\u00f9 h\u1ee3p. N\u1ebfu b\u1ea1n c\u1ed1 \u00e9p ph\u1eb3ng trong khu\u00f4n ch\u1eef V ti\u00eau chu\u1ea9n, m\u00e9p ngo\u00e0i s\u1ebd l\u01a1 l\u1eedng, \u00e1p l\u1ef1c kh\u00f4ng \u0111\u1ec1u, v\u00e0 b\u1ea1n ph\u1ea3i d\u00f9ng n\u00eam c\u00f9ng v\u1edbi l\u1eddi c\u1ea7u nguy\u1ec7n \u0111\u1ec3 gi\u1eef song song.<\/p>\n\n\n\n

    Khu\u00f4n chuy\u00ean d\u1ee5ng lo\u1ea1i b\u1ecf c\u00e1c b\u01b0\u1edbc trung gian. Lo\u1ea1i b\u1ecf b\u01b0\u1edbc trung gian l\u00e0 gi\u1ea3m bi\u1ebfn thi\u00ean. Gi\u1ea3m bi\u1ebfn thi\u00ean l\u00e0 gi\u1ea3m ph\u1ebf ph\u1ea9m.<\/p>\n\n\n\n

    Nh\u01b0ng gi\u1edd b\u1ea1n \u0111ang ngh\u0129 \u0111\u1ebfn vi\u1ec7c t\u0103ng \u0111\u1ed9t ng\u1ed9t t\u1ea3i tr\u1ecdng, gi\u1edbi h\u1ea1n chi\u1ec1u cao m\u1edf, v\u00e0 li\u1ec7u chi\u1ebfc m\u00e1y 120 t\u1ea5n c\u1ee7a b\u1ea1n c\u00f3 th\u1ec3 ch\u1ecbu n\u1ed5i nh\u1eefng \u00fd t\u01b0\u1edfng \u201cchuy\u00ean d\u1ee5ng\u201d n\u00e0y m\u00e0 kh\u00f4ng l\u00e0m cong khung m\u00e1y hay kh\u00f4ng.<\/p>\n\n\n\n

    Ma tr\u1eadn l\u1ef1c \u00e9p v\u00e0 m\u00e1y: Khi \u201ckhu\u00f4n ho\u00e0n h\u1ea3o\u201d th\u1ea5t b\u1ea1i\u201d<\/h2>\n\n\n\n

    M\u00f9a \u0111\u00f4ng n\u0103m ngo\u00e1i, t\u00f4i \u0111\u00e3 ch\u1ee9ng ki\u1ebfn m\u1ed9t m\u00e1y \u00e9p ch\u1ea5n 160 t\u1ea5n t\u1ef1 l\u00e0m l\u1ec7ch khung tr\u00ean \u0111o\u1ea1n d\u00e0i 2,5 m v\u00ec ai \u0111\u00f3 \u0111\u00e3 \u00e9p ch\u1ea1m t\u1ea5m 4140 d\u00e0y 6 mm trong khu\u00f4n nh\u1ecdn h\u1eb9p ch\u1ec9 \u0111\u01b0\u1ee3c x\u1ebfp h\u1ea1ng 120 t\u1ea5n m\u1ed7i m\u00e9t. Ng\u01b0\u1eddi v\u1eadn h\u00e0nh kh\u0103ng kh\u0103ng r\u1eb1ng m\u00e1y \u201c\u0111\u1ee7 c\u00f4ng su\u1ea5t.\u201d Tr\u00ean gi\u1ea5y, anh ta \u0111\u00fang. Trong th\u1ef1c t\u1ebf, t\u1ea3i \u0111\u00e3 v\u01b0\u1ee3t qu\u00e1 140 t\u1ea5n m\u1ed7i m\u00e9t khi to\u00e0n b\u1ed9 th\u00e0nh b\u00ean khu\u00f4n ti\u1ebfp x\u00fac.<\/p>\n\n\n\n

    Khu\u00f4n kh\u00f4ng quan t\u00e2m \u0111\u1ebfn nh\u00e3n m\u00e1c.<\/p>\n\n\n\n

    Khi b\u1ea1n chuy\u1ec3n t\u1eeb u\u1ed1n gi\u00f3i trong khu\u00f4n r\u1ed9ng 8\u00d7V sang \u00e9p ch\u1ea1m trong khu\u00f4n nh\u1ecdn 30\u00b0, l\u1ef1c \u00e9p kh\u00f4ng t\u0103ng nh\u1eb9 nh\u00e0ng. N\u00f3 nh\u00e2n l\u00ean. U\u1ed1n gi\u00f3i c\u00f3 th\u1ec3 ch\u1ec9 l\u00e0 60 t\u1ea5n m\u1ed7i m\u00e9t; \u00e9p ch\u1ea1m c\u00f9ng ti\u1ebft di\u1ec7n \u0111\u00f3 c\u00f3 th\u1ec3 t\u0103ng l\u00ean 180. T\u1ea3i \u0111\u00f3 kh\u00f4ng ch\u1ec9 t\u00e1c \u0111\u1ed9ng v\u00e0o v\u1eadt li\u1ec7u. N\u00f3 c\u00f2n d\u1ed3n v\u00e0o \u0111\u1ea7u \u00e9p, b\u00e0n \u00e9p, vai khu\u00f4n v\u00e0 chu\u00f4i khu\u00f4n.<\/p>\n\n\n\n

    V\u00e0 khi b\u1ea1n v\u01b0\u1ee3t qu\u00e1 m\u1ee9c m\u00e0 khu\u00f4n v\u00e0 m\u00e1y \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 ch\u1ecbu, \u0111\u1ed9 ch\u00ednh x\u00e1c kh\u00f4ng gi\u1ea3m d\u1ea7n. N\u00f3 g\u00e3y v\u1ee5n. \u0110\u1ed9 v\u00f5ng c\u1ee7a \u0111\u1ea7u \u00e9p t\u0103ng, \u0111\u1ed9 song song l\u1ec7ch qu\u00e1 0,1 mm, v\u00e0 m\u1ee5c ti\u00eau \u00b10,25\u00b0 c\u1ee7a b\u1ea1n tr\u1edf th\u00e0nh \u1ea3o t\u01b0\u1edfng.<\/p>\n\n\n\n

    Quy t\u1eafc x\u01b0\u1edfng s\u1ea3n xu\u1ea5t:<\/strong> Khu\u00f4n \u201cho\u00e0n h\u1ea3o\u201d cho v\u1eadt li\u1ec7u s\u1ebd tr\u1edf n\u00ean v\u00f4 d\u1ee5ng n\u1ebfu n\u00f3 y\u00eau c\u1ea7u m\u00e1y c\u1ee7a b\u1ea1n ch\u1ecbu nh\u1eefng g\u00ec khung m\u00e1y kh\u00f4ng th\u1ec3 gi\u1eef th\u1eb3ng.<\/p>\n\n\n\n

    V\u00ed d\u1ee5, danh m\u1ee5c s\u1ea3n ph\u1ea9m c\u1ee7a CN-HAWE l\u00e0 100% d\u1ef1a tr\u00ean CNC v\u00e0 bao ph\u1ee7 c\u00e1c \u1ee9ng d\u1ee5ng cao c\u1ea5p trong c\u1eaft laser, u\u1ed1n, phay r\u00e3nh, c\u1eaft x\u00e9n; CN-HAWE \u0111\u1ea7u t\u01b0 h\u01a1n 8% doanh thu h\u00e0ng n\u0103m v\u00e0o nghi\u00ean c\u1ee9u v\u00e0 ph\u00e1t tri\u1ec3n. ADH c\u00f3 n\u0103ng l\u1ef1c R&D v\u1ec1 m\u00e1y \u00e9p ch\u1ea5n; \u0111\u1ed1i v\u1edbi c\u00e1c nh\u00f3m \u0111ang \u0111\u00e1nh gi\u00e1 l\u1ef1a ch\u1ecdn th\u1ef1c t\u1ebf \u1edf \u0111\u00e2y, M\u00e1y ch\u1ea5n t\u00f4n<\/a> l\u00e0 b\u01b0\u1edbc ti\u1ebfp theo ph\u00f9 h\u1ee3p.<\/p>\n\n\n\n

    B\u1ea1n mu\u1ed1n kh\u00f4ng c\u00f3 ph\u1ebf ph\u1ea9m. T\u1ed1t. V\u1eady th\u00ec b\u1ed9 l\u1ecdc \u0111\u1ea7u ti\u00ean kh\u00f4ng ph\u1ea3i l\u00e0 h\u00ecnh h\u1ecdc. \u0110\u00f3 l\u00e0 t\u1ea3i tr\u1ecdng v\u00e0 gi\u1edbi h\u1ea1n c\u1ea5u tr\u00fac c\u1ee7a ch\u00ednh m\u00e1y \u00e9p.<\/p>\n\n\n\n

    Sai l\u1ec7ch t\u1ea3i tr\u1ecdng: t\u1ea1i sao vi\u1ec7c \u00e9p qu\u00e1 khu\u00f4n chuy\u00ean d\u1ee5ng g\u00e2y h\u01b0 h\u1ea1i m\u00e1y nhi\u1ec1u h\u01a1n so v\u1edbi \u00e9p thi\u1ebfu trong khu\u00f4n ch\u1eef V<\/h3>\n\n\n\n

    H\u00e3y h\u00ecnh dung hai sai l\u1ea7m.<\/p>\n\n\n\n

    Th\u1ee9 nh\u1ea5t: b\u1ea1n u\u1ed1n gi\u00f3i th\u00e9p m\u1ec1m 4 mm trong khu\u00f4n V 32 mm tr\u00ean m\u00e1y 100 t\u1ea5n. B\u1ea1n \u0111ang d\u01b0\u1edbi c\u00f4ng su\u1ea5t. Tr\u01b0\u1eddng h\u1ee3p x\u1ea5u nh\u1ea5t, b\u1ea1n s\u1ebd th\u1ea5y h\u01a1i cong ho\u1eb7c g\u00f3c kh\u00f4ng \u0111\u1ec1u v\u00ec V qu\u00e1 r\u1ed9ng. Kh\u00f3 ch\u1ecbu. Nh\u01b0ng c\u00f3 th\u1ec3 ch\u1ec9nh \u0111\u01b0\u1ee3c.<\/p>\n\n\n\n

    Th\u1ee9 hai: b\u1ea1n \u00e9p ch\u1ea1m t\u1ea5m 4 mm \u0111\u00f3 trong khu\u00f4n nh\u1ecdn 12 mm \u0111\u1ec3 \u0111\u1ea1t sai s\u1ed1 \u00b10,25\u00b0. Gi\u1edd th\u00ec to\u00e0n b\u1ed9 th\u00e0nh b\u00ean g\u1ea7n nh\u01b0 ti\u1ebfp x\u00fac ho\u00e0n to\u00e0n. L\u1ef1c \u0111\u1ed9t ng\u1ed9t t\u0103ng v\u1ecdt. T\u1ea3i t\u1eadp trung \u1edf vai khu\u00f4n v\u00e0 d\u1ed3n v\u00e0o b\u00e0n \u00e9p. N\u1ebfu khu\u00f4n \u0111\u00f3 ch\u1ec9 \u0111\u01b0\u1ee3c x\u1ebfp h\u1ea1ng 90 t\u1ea5n m\u1ed7i m\u00e9t m\u00e0 b\u1ea1n l\u1ea1i \u00e9p 120, khu\u00f4n s\u1ebd kh\u00f4ng c\u1ea3nh b\u00e1o l\u1ecbch s\u1ef1. N\u00f3 b\u1ecb l\u00f5m. N\u00f3 n\u1ee9t. B\u00e0n \u00e9p b\u1ecb bi\u1ebfn d\u1ea1ng v\u0129nh vi\u1ec5n, \u0111o b\u1eb1ng ph\u1ea7n tr\u0103m tr\u0103m milim\u00e9t tr\u00ean m\u1ed7i m\u00e9t.<\/p>\n\n\n\n

    \u0110\u00f3 kh\u00f4ng ph\u1ea3i l\u00fd thuy\u1ebft. M\u1ed9t khi b\u1ea1n l\u00e0m bi\u1ebfn d\u1ea1ng d\u1ebbo b\u00e0n ho\u1eb7c \u0111\u1ea7u \u00e9p d\u00f9 ch\u1ec9 0,05 mm tr\u00ean \u0111o\u1ea1n d\u00e0i 2 m, c\u0103n ch\u1ec9nh gi\u1eefa ch\u00e0y v\u00e0 khu\u00f4n \u0111\u00e3 l\u1ec7ch. V\u00e0 ch\u1ec9 c\u1ea7n l\u1ec7ch qu\u00e1 0,1 mm l\u00e0 \u0111\u1ee7 \u0111\u1ec3 g\u00e2y ra m\u1ed9t ph\u1ea7n t\u01b0 l\u1ed7i u\u1ed1n \u2014 xo\u1eafn m\u00e9p, l\u1ec7ch g\u00f3c, b\u00e1n k\u00ednh kh\u00f4ng \u0111\u1ec1u \u2014 ngay c\u1ea3 khi bi\u00ean d\u1ea1ng khu\u00f4n c\u1ee7a b\u1ea1n ho\u00e0n h\u1ea3o v\u1ec1 m\u1eb7t to\u00e1n h\u1ecdc.<\/p>\n\n\n\n

    Vi\u1ec7c \u00e9p qu\u00e1 m\u1ee9c m\u1ed9t khu\u00f4n chuy\u00ean d\u1ee5ng s\u1ebd t\u1eadp trung \u1ee9ng su\u1ea5t v\u00ec n\u00f3 khi\u1ebfn cho ph\u1ea7n \u0111\u00e1y ch\u1ea1m ho\u00e0n to\u00e0n v\u00e0 to\u00e0n m\u1eb7t ch\u1ecbu t\u1ea3i. M\u1ed9t khu\u00f4n V ph\u1ed5 th\u00f4ng, khi u\u1ed1n kh\u00f4ng ch\u1ea1m (air bend), s\u1ebd ph\u00e2n b\u1ed1 t\u1ea3i \u0111\u1ec1u h\u01a1n v\u00e0 hi\u1ebfm khi g\u1eb7p \u0111\u1ec9nh l\u1ef1c t\u1eadp trung t\u01b0\u01a1ng t\u1ef1.<\/p>\n\n\n\n

    Sai l\u1ea7m n\u00e0o t\u1ed1n k\u00e9m h\u01a1n \u0111\u1ec3 kh\u1eafc ph\u1ee5c: m\u1ed9t \u0111o\u1ea1n khu\u00f4n b\u1ecb n\u1ee9t hay m\u1ed9t m\u00e1y gi\u1edd c\u1ea7n ph\u1ea3i ch\u00eam v\u00e0 hi\u1ec7u chu\u1ea9n l\u1ea1i cho m\u1ecdi c\u00f4ng vi\u1ec7c?<\/p>\n\n\n\n

    T\u1ea5m d\u00e0y so v\u1edbi t\u1ea5m m\u1ecfng: khi n\u00e0o vi\u1ec7c m\u1edf r\u1ed9ng r\u00e3nh V l\u00e0 an to\u00e0n, v\u00e0 khi n\u00e0o n\u00f3 khi\u1ebfn t\u1ea3i tr\u1ecdng t\u0103ng v\u1ecdt nguy hi\u1ec3m.<\/h3>\n\n\n\n

    H\u00e3y t\u00e1ch ri\u00eang th\u00e9p A36 d\u00e0y 10 mm kh\u1ecfi nh\u00f4m 5052 d\u00e0y 1 mm. Ch\u00fang kh\u00f4ng c\u00f9ng th\u1ebf gi\u1edbi v\u1edbi nhau.<\/p>\n\n\n\n

    V\u1edbi th\u00e9p m\u1ec1m d\u00e0y 10 mm, chuy\u1ec3n t\u1eeb r\u00e3nh V 80 mm sang 100 mm s\u1ebd gi\u1ea3m t\u1ea3i tr\u1ecdng \u0111\u00e1ng k\u1ec3. B\u00e1n k\u00ednh u\u1ed1n t\u0103ng, bi\u1ebfn d\u1ea1ng gi\u1ea3m v\u00e0 l\u1ef1c gi\u1ea3m. B\u1ea1n c\u00f3 th\u00eam kh\u00f4ng gian an to\u00e0n cho m\u00e1y. M\u1ed9t b\u01b0\u1edbc \u0111i an to\u00e0n \u2014 n\u1ebfu b\u1ea3n v\u1ebd cho ph\u00e9p b\u00e1n k\u00ednh trong l\u1edbn h\u01a1n.<\/p>\n\n\n\n

    Gi\u1edd h\u00e3y th\u1eed logic \u0111\u00f3 v\u1edbi th\u00e9p kh\u00f4ng g\u1ec9 d\u00e0y 1 mm v\u00e0 c\u1ed1 \u0111\u1ea1t b\u00e1n k\u00ednh trong 1 mm b\u1eb1ng r\u00e3nh V 16 mm. B\u1ea1n s\u1ebd ph\u1ea3i \u00e9p ch\u00e0y s\u00e2u h\u01a1n \u0111\u1ec3 b\u00f9 l\u1ea1i \u0111\u1ed9 \u0111\u00e0n h\u1ed3i h\u1ed3i ph\u1ee5c. \u0110\u1ed9 xuy\u00ean v\u00e0o v\u1eadt li\u1ec7u t\u0103ng. \u0110\u1ebfn m\u1ed9t \u0111i\u1ec3m n\u00e0o \u0111\u00f3, b\u1ea1n s\u1ebd chuy\u1ec3n t\u1eeb u\u1ed1n kh\u00f4ng ch\u1ea1m sang u\u1ed1n ch\u1ea1m \u0111\u00e1y m\u00e0 kh\u00f4ng nh\u1eadn ra. V\u00e0 r\u00e3nh V qu\u00e1 r\u1ed9ng khi\u1ebfn vi\u1ec7c ki\u1ec3m so\u00e1t b\u00e1n k\u00ednh trong tr\u1edf n\u00ean kh\u00f3, n\u00ean kho\u1ea3ng b\u00f9 g\u00f3c u\u1ed1n thay \u0111\u1ed5i m\u1ed7i l\u1ea7n hi\u1ec7u ch\u1ec9nh.<\/p>\n\n\n\n

    \u0110\u1ed1i v\u1edbi v\u1eadt li\u1ec7u m\u1ecfng, r\u00e3nh V qu\u00e1 r\u1ed9ng kh\u00f4ng ch\u1ec9 l\u00e0m thay \u0111\u1ed5i b\u00e1n k\u00ednh. N\u00f3 c\u00f2n l\u00e0m t\u0103ng \u0111\u1ed9 xuy\u00ean c\u1ea7n thi\u1ebft \u0111\u1ec3 \u0111\u1ea1t g\u00f3c u\u1ed1n, khi\u1ebfn t\u1ea3i tr\u1ecdng t\u1eadp trung cao h\u01a1n t\u1ea1i vai khu\u00f4n. \u0110\u00f3 l\u00e0 l\u00fac b\u1ea1n b\u1eaft \u0111\u1ea7u th\u1ea5y v\u1ebft n\u1ee9t m\u00e9p theo th\u1edb tr\u00ean th\u00e9p 304 d\u00e0y 4 mm khi ai \u0111\u00f3 ngh\u0129 r\u1eb1ng \u201cr\u1ed9ng h\u01a1n l\u00e0 an to\u00e0n h\u01a1n\u201d.\u201d<\/p>\n\n\n\n

    V\u1eadt l\u00fd r\u1ea5t \u0111\u01a1n gi\u1ea3n: t\u1ea5m d\u00e0y ch\u1ecbu \u0111\u01b0\u1ee3c b\u00e1n k\u00ednh l\u1edbn h\u01a1n v\u00e0 h\u01b0\u1edfng l\u1ee3i t\u1eeb r\u00e3nh V r\u1ed9ng h\u01a1n; t\u1ea5m m\u1ecfng v\u1edbi b\u00e1n k\u00ednh ch\u1eb7t th\u00ec c\u1ea7n \u0111\u01b0\u1ee3c \u0111\u1ee1 ki\u1ec3m so\u00e1t, kh\u00f4ng ph\u1ea3i m\u1ed9t khe s\u00e2u.<\/p>\n\n\n\n

    V\u1eady khi b\u1ea1n m\u1edf r\u1ed9ng r\u00e3nh V, b\u1ea1n \u0111ang gi\u1ea3m l\u1ef1c tr\u00ean to\u00e0n ti\u1ebft di\u1ec7n \u2014 hay \u0111ang bu\u1ed9c m\u00ecnh ph\u1ea3i \u00e9p s\u00e2u h\u01a1n, kh\u00f3 ki\u1ec3m so\u00e1t h\u01a1n?<\/p>\n\n\n\n

    Kho\u1ea3ng c\u00e1ch t\u01b0\u01a1ng th\u00edch gi\u1eefa d\u1ee5ng c\u1ee5 v\u00e0 m\u00e1y: chuy\u1ec7n g\u00ec x\u1ea3y ra khi bi\u00ean d\u1ea1ng khu\u00f4n \u201cho\u00e0n h\u1ea3o\u201d v\u1ec1 m\u1eb7t to\u00e1n h\u1ecdc v\u01b0\u1ee3t qu\u00e1 chi\u1ec1u m\u1edf t\u1ed1i \u0111a c\u1ee7a m\u00e1y b\u1ea1n.<\/h3>\n\n\n\n

    H\u00e3y t\u01b0\u1edfng t\u01b0\u1ee3ng b\u1ea1n ch\u1ecdn b\u1ed9 d\u1ee5ng c\u1ee5 l\u00fd t\u01b0\u1edfng: khu\u00f4n nh\u1ecdn cao, ch\u00e0y c\u1ed5 ng\u1ed7ng d\u00e0i v\u00e0 m\u1ed9t chi ti\u1ebft h\u1ed9p cao 150 mm c\u1ea7n kho\u1ea3ng h\u1edf. Tr\u00f4ng tr\u00ean b\u00e0n th\u00ec ho\u00e0n h\u1ea3o.<\/p>\n\n\n\n

    Nh\u01b0ng khi b\u1ea1n l\u1eafp v\u00e0o m\u00e1y \u00e9p c\u00f3 chi\u1ec1u m\u1edf 400 mm v\u00e0 h\u00e0nh tr\u00ecnh 250 mm, v\u1edbi chi\u1ec1u cao d\u1ee5ng c\u1ee5 v\u00e0 kho\u1ea3ng s\u00e1ng b\u1ecb chi\u1ebfm h\u1ebft, b\u1ea1n th\u1ef1c s\u1ef1 kh\u00f4ng th\u1ec3 \u0111\u1eb7t chi ti\u1ebft v\u00e0o \u0111\u00fang v\u1ecb tr\u00ed n\u1ebfu kh\u00f4ng u\u1ed1n tr\u01b0\u1edbc ho\u1eb7c l\u1eadt chi ti\u1ebft.<\/p>\n\n\n\n

    V\u1eady chuy\u1ec7n g\u00ec x\u1ea3y ra?<\/p>\n\n\n\n

    Ng\u01b0\u1eddi v\u1eadn h\u00e0nh \u201c\u0103n gian\u201d \u0111\u1ed9 s\u00e2u. H\u1ecd chia u\u1ed1n th\u00e0nh hai l\u1ea7n. H\u1ecd tr\u00e1nh ch\u1ea1m \u0111\u00e1y ho\u00e0n to\u00e0n v\u00ec h\u00e0nh tr\u00ecnh c\u1ee7a b\u00e0n tr\u01b0\u1ee3t kh\u00f4ng \u0111\u1ee7. B\u1ea1n ch\u1ec9 u\u1ed1n \u0111\u1ebfn 88\u00b0 v\u00e0 hy v\u1ecdng \u0111\u1ed9 \u0111\u00e0n h\u1ed3i s\u1ebd \u0111\u01b0a n\u00f3 v\u1ec1 \u0111\u00fang g\u00f3c mong mu\u1ed1n.<\/p>\n\n\n\n

    \u0110\u00e2y ch\u00ednh l\u00e0 l\u00fac khu\u00f4n \u201cho\u00e0n h\u1ea3o\u201d th\u1ea5t b\u1ea1i \u2014 kh\u00f4ng ph\u1ea3i v\u00ec bi\u00ean d\u1ea1ng sai, m\u00e0 v\u00ec ph\u1ea1m vi l\u00e0m vi\u1ec7c c\u1ee7a m\u00e1y kh\u00f4ng th\u1ec3 th\u1ef1c hi\u1ec7n h\u00ecnh h\u1ecdc \u0111\u00f3 trong m\u1ed9t l\u1ea7n \u00e9p ki\u1ec3m so\u00e1t duy nh\u1ea5t. V\u00e0 khi b\u1ea1n th\u00eam c\u00e1c l\u1ea7n \u00e9p b\u1ed5 sung, b\u1ea1n l\u1ea1i mang tr\u1edf l\u1ea1i s\u1ef1 sai l\u1ec7ch m\u00e0 b\u1ea1n \u0111\u00e3 t\u1ed1n ti\u1ec1n \u0111\u1ec3 lo\u1ea1i b\u1ecf.<\/p>\n\n\n\n

    C\u00e1c khu\u00f4n nh\u1ecdn y\u00eau c\u1ea7u ch\u1ea1m \u0111\u00e1y th\u01b0\u1eddng c\u1ea7n \u0111\u1ed9 xuy\u00ean s\u00e2u h\u01a1n v\u00e0 \u0111\u1ed9 ch\u00ednh x\u00e1c chi\u1ec1u cao \u0111\u00f3ng cao h\u01a1n. N\u1ebfu \u0111\u1ed9 l\u1eb7p l\u1ea1i chi\u1ec1u cao \u0111\u00f3ng c\u1ee7a m\u00e1y l\u1ec7ch ch\u1ec9 0,02 mm do bi\u1ebfn d\u1ea1ng d\u01b0\u1edbi t\u1ea3i, g\u00f3c u\u1ed1n s\u1ebd thay \u0111\u1ed5i. Khi \u0111\u00f3, kh\u00f4ng c\u00f2n l\u00e0 v\u1ea5n \u0111\u1ec1 c\u1ee7a khu\u00f4n n\u1eefa. \u0110\u00f3 l\u00e0 s\u1ef1 bi\u1ebfn d\u1ea1ng c\u1ea5u tr\u00fac.<\/p>\n\n\n\n

    Tr\u01b0\u1edbc khi b\u1ea1n \u0111\u1eb7t h\u00e0ng khu\u00f4n ch\u00ednh x\u00e1c, b\u1ea1n \u0111\u00e3 \u0111o kho\u1ea3ng s\u00e1ng th\u1ef1c t\u1ebf c\u00f2n l\u1ea1i d\u01b0\u1edbi t\u1ea3i ch\u01b0a \u2014 ch\u1ee9 kh\u00f4ng ch\u1ec9 l\u00e0 con s\u1ed1 tr\u00ean s\u00e1ch h\u01b0\u1edbng d\u1eabn?<\/p>\n\n\n\n

    Ki\u1ec3u ch\u1ea5u g\u1eafn ch\u00e0y khu\u00f4n ch\u00e2u \u00c2u, M\u1ef9 hay WT: h\u1ec7 th\u1ed1ng g\u1eafn ch\u1ea5u t\u01b0\u1edfng nh\u01b0 nh\u1ecf nh\u1eb7t n\u00e0y l\u1ea1i quy\u1ebft \u0111\u1ecbnh gi\u1edbi h\u1ea1n khu\u00f4n c\u1ee7a b\u1ea1n.<\/h3>\n\n\n\n

    T\u00f4i \u0111\u00e3 th\u1ea5y m\u1ed9t khu\u00f4n chia \u0111o\u1ea1n ki\u1ec3u ch\u00e2u \u00c2u d\u00e0i 3 m ch\u1ecbu \u0111\u01b0\u1ee3c s\u1ea1ch 100 t\u1ea5n m\u1ed7i m\u00e9t v\u00ec ch\u1ea5u c\u1ee7a n\u00f3 \u0111\u01b0\u1ee3c g\u1eafn s\u00e2u trong k\u1eb9p m\u00e0i ch\u00ednh x\u00e1c. T\u00f4i c\u0169ng \u0111\u00e3 th\u1ea5y ch\u1ea5u ki\u1ec3u M\u1ef9 b\u1ecb l\u1eafc d\u01b0\u1edbi 70 t\u1ea5n m\u1ed7i m\u00e9t v\u00ec bu-l\u00f4ng k\u1eb9p kh\u00f4ng ph\u00e2n b\u1ed5 t\u1ea3i \u0111\u1ec1u.<\/p>\n\n\n\n

    Vi\u1ec7c g\u1eafn kh\u00f4ng ph\u1ea3i ch\u1ec9 \u0111\u1ec3 \u0111\u1eb9p m\u1eaft. N\u00f3 quy\u1ebft \u0111\u1ecbnh c\u00e1ch l\u1ef1c truy\u1ec1n v\u00e0o gi\u01b0\u1eddng m\u00e1y.<\/p>\n\n\n\n

    Phong c\u00e1ch ch\u00e2u \u00c2u s\u1eed d\u1ee5ng chu\u00f4i h\u1eb9p v\u00e0 k\u1eb9p c\u01a1 h\u1ecdc\u2014thay \u0111\u1ed5i nhanh, \u0111\u1ed9 l\u1eb7p l\u1ea1i cao, nh\u01b0ng ph\u1ee5 thu\u1ed9c v\u00e0o b\u1ec1 m\u1eb7t k\u1eb9p s\u1ea1ch v\u00e0 ch\u00ednh x\u00e1c. Phong c\u00e1ch M\u1ef9 d\u1ef1a v\u00e0o chu\u00f4i r\u1ed9ng h\u01a1n v\u00e0 v\u00edt h\u00e3m; ch\u1eafc ch\u1eafn khi \u0111\u01b0\u1ee3c b\u1ea3o tr\u00ec t\u1ed1t, nh\u01b0ng d\u1ec5 g\u1eb7p t\u1ea3i tr\u1ecdng \u0111i\u1ec3m n\u1ebfu bu-l\u00f4ng kh\u00f4ng \u0111\u01b0\u1ee3c si\u1ebft \u0111\u00fang m\u00f4-men. Phong c\u00e1ch WT l\u1ea1i ph\u00e2n b\u1ed1 t\u1ea3i tr\u1ecdng kh\u00e1c, th\u01b0\u1eddng cho ph\u00e9p x\u1ebfp h\u1ea1ng t\u1ea3i tr\u1ecdng cao h\u01a1n tr\u00ean m\u1ed7i m\u00e9t nh\u1edd m\u1eb7t ti\u1ebfp x\u00fac r\u1ed9ng h\u01a1n.<\/p>\n\n\n\n

    N\u1ebfu m\u00e1y c\u1ee7a b\u1ea1n \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf quanh m\u1ed9t h\u1ec7 th\u1ed1ng, vi\u1ec7c th\u00edch \u1ee9ng v\u1edbi h\u1ec7 th\u1ed1ng kh\u00e1c b\u1eb1ng b\u1ed9 chuy\u1ec3n \u0111\u1ed5i c\u00f3 th\u1ec3 l\u00e0m gi\u1ea3m c\u00f4ng su\u1ea5t t\u1ea3i tr\u1ecdng hi\u1ec7u d\u1ee5ng. M\u1eaft x\u00edch y\u1ebfu nh\u1ea5t s\u1ebd tr\u1edf th\u00e0nh giao di\u1ec7n, ch\u1ee9 kh\u00f4ng ph\u1ea3i th\u00e2n khu\u00f4n.<\/p>\n\n\n\n

    V\u00e0 khi giao di\u1ec7n \u0111\u00f3 b\u1ecb u\u1ed1n d\u01b0\u1edbi t\u1ea3i, ch\u00e0y v\u00e0 khu\u00f4n c\u1ee7a b\u1ea1n s\u1ebd l\u1ec7ch song song \u0111i v\u00e0i ph\u1ea7n m\u01b0\u1eddi \u0111\u1ed9. Ch\u1ec9 c\u1ea7n v\u1eady l\u00e0 c\u00f3 th\u1ec3 lo\u1ea1i b\u1ecf m\u1ed9t t\u1ea5m 2 m c\u00f3 y\u00eau c\u1ea7u th\u1ea9m m\u1ef9.<\/p>\n\n\n\n

    B\u1ea1n mu\u1ed1n \u0111\u1ed9 ch\u00ednh x\u00e1c kh\u00f4ng ph\u1ebf ph\u1ea9m. T\u1ed1t. V\u1eady h\u00e3y ng\u1eebng ngh\u0129 v\u1ec1 \u201ckhu\u00f4n t\u1ed1t nh\u1ea5t\u201d v\u00e0 b\u1eaft \u0111\u1ea7u ngh\u0129 theo ma tr\u1eadn m\u00e1y - khu\u00f4n - v\u1eadt li\u1ec7u. H\u00ecnh h\u1ecdc, t\u1ea3i tr\u1ecdng tr\u00ean m\u1ed7i m\u00e9t, chi\u1ec1u cao m\u1edf, h\u1ec7 th\u1ed1ng chu\u00f4i, \u0111\u1ed9 d\u00e0y v\u1eadt li\u1ec7u, h\u01b0\u1edbng th\u1edb\u2014ch\u00fang g\u1eafn k\u1ebft kh\u00f4ng th\u1ec3 t\u00e1ch r\u1eddi trong th\u1ef1c t\u1ebf.<\/p>\n\n\n\n

    C\u00e2u h\u1ecfi th\u1ef1c s\u1ef1 kh\u00f4ng ph\u1ea3i l\u00e0 li\u1ec7u khu\u00f4n chuy\u00ean d\u1ee5ng c\u00f3 ho\u1ea1t \u0111\u1ed9ng hay kh\u00f4ng.<\/p>\n\n\n\n

    M\u00e0 l\u00e0 li\u1ec7u m\u00e1y \u00e9p ch\u1ea5n c\u1ee7a b\u1ea1n, v\u1edbi t\u00ecnh tr\u1ea1ng hi\u1ec7n t\u1ea1i tr\u00ean s\u00e0n x\u01b0\u1edfng, c\u00f3 th\u1ec3 ch\u1ecbu \u0111\u01b0\u1ee3c t\u1ea3i tr\u1ecdng v\u00e0 h\u00ecnh h\u1ecdc m\u00e0 ch\u00fang y\u00eau c\u1ea7u m\u00e0 kh\u00f4ng t\u1ef1 l\u00e0m bi\u1ebfn d\u1ea1ng tr\u01b0\u1edbc hay kh\u00f4ng.<\/p>\n\n\n\n

    Khung l\u1ef1a ch\u1ecdn \u201c\u01afu ti\u00ean v\u1eadt li\u1ec7u\u201d cho thi\u1ebft l\u1eadp kh\u00f4ng ph\u1ebf ph\u1ea9m<\/h2>\n\n\n\n

    B\u1ea1n \u0111ang m\u1ea5t 15\u201320 ph\u00fat cho m\u1ed7i l\u1ea7n thi\u1ebft l\u1eadp ch\u1ec9 \u0111\u1ec3 t\u00ecm v\u00e0 thay \u0111\u1ed5i khu\u00f4n V \u201cg\u1ea7n \u0111\u00fang\u201d\u2014r\u1ed3i l\u1ea1i m\u1ea5t th\u00eam m\u1ed9t ho\u1eb7c hai chi ti\u1ebft \u0111\u1ec3 ch\u1ec9nh g\u00f3c t\u1eeb 92\u00b0 v\u1ec1 90\u00b0 v\u00ec v\u1eadt li\u1ec7u kh\u00f4ng ph\u1ea3n \u1ee9ng gi\u1ed1ng nh\u01b0 l\u1ea7n l\u00e0m vi\u1ec7c tr\u01b0\u1edbc.<\/p>\n\n\n\n

    D\u01b0\u1edbi \u0111\u00e2y l\u00e0 c\u00e1ch \u0111\u1ec3 b\u1ea1n ng\u0103n \u0111i\u1ec1u \u0111\u00f3 x\u1ea3y ra tr\u01b0\u1edbc khi ch\u1ea1m t\u1edbi thanh g\u00e1 sau.<\/p>\n\n\n\n

    Tr\u01b0\u1edbc ti\u00ean, b\u1ea1n \u0111o ch\u00ednh m\u00e1y c\u1ee7a m\u00ecnh\u2014kh\u00f4ng ph\u1ea3i t\u1edd gi\u1edbi thi\u1ec7u, m\u00e0 l\u00e0 m\u00e1y. Th\u1ef1c hi\u1ec7n u\u1ed1n kh\u00ed c\u00f3 ki\u1ec3m so\u00e1t tr\u00ean t\u1ea5m A36 d\u00e0y 6 mm, d\u00e0i 2 m v\u1edbi r\u00e3nh V 60 mm \u0111\u00e3 bi\u1ebft. T\u00ednh to\u00e1n t\u1ea3i tr\u1ecdng l\u00fd thuy\u1ebft tr\u00ean m\u1ed7i m\u00e9t. So s\u00e1nh v\u1edbi s\u1ed1 li\u1ec7u m\u00e0 b\u1ea3ng \u0111i\u1ec1u khi\u1ec3n b\u00e1o v\u00e0 g\u00f3c th\u1ef1c t\u1ebf c\u1ee7a b\u1ea1n khi ch\u1ecbu t\u1ea3i. N\u1ebfu b\u1ea1n th\u1ea5y \u0111\u1ed9 l\u1ec7ch 0,5\u00b0 gi\u1eefa trung t\u00e2m v\u00e0 hai \u0111\u1ea7u \u1edf t\u1ea3i t\u1ed5ng 120 t\u1ea5n, \u0111\u00f3 l\u00e0 \u0111\u1ed9 v\u00f5ng. \u0110\u1ed9 v\u00f5ng th\u1ef1c. Kh\u00f4ng ph\u1ea3i l\u1ed7i d\u1ee5ng c\u1ee5.<\/p>\n\n\n\n

    Khi CN-HAWE \u0111\u1ea7u t\u01b0 h\u01a1n 8% doanh thu h\u00e0ng n\u0103m v\u00e0o nghi\u00ean c\u1ee9u v\u00e0 ph\u00e1t tri\u1ec3n. ADH v\u1eadn h\u00e0nh n\u0103ng l\u1ef1c R&D tr\u00ean c\u00e1c m\u00e1y ch\u1ea5n t\u00f4n, n\u1ebfu b\u01b0\u1edbc ti\u1ebfp theo l\u00e0 trao \u0111\u1ed5i tr\u1ef1c ti\u1ebfp v\u1edbi nh\u00f3m, Li\u00ean h\u1ec7 v\u1edbi ch\u00fang t\u00f4i<\/a> l\u00e0 \u0111i\u1ec1u ph\u00f9 h\u1ee3p nh\u1ea5t \u1edf \u0111\u00e2y.<\/p>\n\n\n\n

    B\u00e2y gi\u1edd l\u1eb7p l\u1ea1i v\u1edbi th\u00e9p kh\u00f4ng g\u1ec9 304 d\u00e0y 3 mm trong r\u00e3nh V 24 mm. Quan s\u00e1t \u0111\u1ed9 xuy\u00ean s\u00e2u. Quan s\u00e1t \u0111\u1ed9 \u0111\u00e0n h\u1ed3i tr\u1ea3 l\u1ea1i. N\u1ebfu b\u1ea1n ph\u1ea3i th\u00eam 0,3 mm h\u00e0nh tr\u00ecnh \u0111\u1ec3 ph\u1ee5c h\u1ed3i g\u00f3c sau khi nh\u1ea3 t\u1ea3i, \u0111\u00f3 l\u00e0 s\u1ef1 c\u1ed9ng g\u1ed9p gi\u1eefa \u0111\u1ed9 tu\u00e2n th\u1ee7 c\u1ee7a k\u1ebft c\u1ea5u v\u00e0 \u0111\u1ed9 \u0111\u00e0n h\u1ed3i c\u1ee7a v\u1eadt li\u1ec7u.<\/p>\n\n\n\n

    T\u1ed5ng h\u1ee3p \u0111\u00f3 ch\u00ednh l\u00e0 gi\u1edbi h\u1ea1n th\u1ef1c s\u1ef1 c\u1ee7a b\u1ea1n.<\/p>\n\n\n\n

    Quy t\u1eafc x\u01b0\u1edfng s\u1ea3n xu\u1ea5t:<\/strong> N\u1ebfu b\u1ea1n ch\u01b0a t\u1eebng u\u1ed1n m\u1ed9t m\u1eabu ki\u1ec3m ch\u1ee9ng \u1edf m\u1ee9c 70% c\u1ee7a t\u1ea3i tr\u1ecdng danh \u0111\u1ecbnh tr\u00ean to\u00e0n chi\u1ec1u d\u00e0i l\u00e0m vi\u1ec7c, th\u00ec b\u1ea1n ch\u01b0a bi\u1ebft gi\u1edbi h\u1ea1n c\u1ee7a m\u00e1y m\u00ecnh.<\/p>\n\n\n\n

    B\u1ea1n kh\u00f4ng ph\u1ea3i \u0111ang c\u1ed1 ph\u00e1 h\u1ecfng m\u00e1y \u00e9p ch\u1ea5n. B\u1ea1n \u0111ang l\u1eadp b\u1ea3n \u0111\u1ed3 n\u01a1i m\u00e0 \u0111\u1ed9 l\u1eb7p l\u1ea1i g\u00f3c b\u1eaft \u0111\u1ea7u l\u1ec7ch qu\u00e1 \u00b10,25\u00b0. B\u1edfi v\u00ec khi \u0111i\u1ec1u \u0111\u00f3 x\u1ea3y ra, b\u1ea5t k\u1ef3 khu\u00f4n \u201cch\u00ednh x\u00e1c\u201d n\u00e0o c\u0169ng ch\u1ec9 l\u00e0m khu\u1ebfch \u0111\u1ea1i s\u1ef1 kh\u00f4ng \u1ed5n \u0111\u1ecbnh \u0111\u00f3.<\/p>\n\n\n\n

    V\u00ec v\u1eady, khung l\u1ef1a ch\u1ecdn b\u1eaft \u0111\u1ea7u t\u1eeb \u0111\u00e2y: v\u1eadt l\u00fd c\u1ee7a v\u1eadt li\u1ec7u trong ph\u1ea1m vi c\u00f4ng su\u1ea5t m\u00e1y \u0111\u01b0\u1ee3c x\u00e1c minh. Kh\u00f4ng ph\u1ea3i s\u1ef1 ti\u1ec7n l\u1ee3i c\u1ee7a gi\u00e1 \u0111\u1ef1ng khu\u00f4n.<\/p>\n\n\n\n

    V\u00e0 n\u1ebfu \u0111i\u1ec1u \u0111\u00f3 nghe c\u00f3 v\u1ebb ch\u1eadm h\u01a1n vi\u1ec7c l\u1ea5y khu\u00f4n V ti\u00eau chu\u1ea9n, h\u00e3y t\u1ef1 h\u1ecfi b\u1ea1n \u0111\u00e3 lo\u1ea1i b\u1ecf bao nhi\u00eau chi ti\u1ebft \u0111\u1ea7u ti\u00ean th\u00e1ng tr\u01b0\u1edbc v\u00ec ph\u1ea3i ch\u1ec9nh l\u1ec7ch 1\u00b0.<\/p>\n\n\n\n

    B\u01b0\u1edbc 1: B\u1eaft \u0111\u1ea7u t\u1eeb h\u00e0nh vi c\u1ee7a v\u1eadt li\u1ec7u\u2014c\u00e1ch m\u00e0 nh\u00f4m, th\u00e9p cacbon th\u1ea5p v\u00e0 th\u00e9p kh\u00f4ng g\u1ec9 \u0111\u00f2i h\u1ecfi chi\u1ebfn l\u01b0\u1ee3c khu\u00f4n ho\u00e0n to\u00e0n kh\u00e1c nhau<\/h3>\n\n\n\n

    B\u1ea1n l\u00e3ng ph\u00ed nhi\u1ec1u ti\u1ec1n h\u01a1n khi d\u00f9ng chung logic V\u00d78 cho nh\u00f4m 5052 v\u00e0 th\u00e9p kh\u00f4ng g\u1ec9 304 h\u01a1n b\u1ea1n t\u01b0\u1edfng.<\/p>\n\n\n\n

    Nh\u00f4m ch\u1ea3y s\u1edbm, \u0111\u00e0n h\u1ed3i th\u1ea5p, y\u00eau c\u1ea7u t\u1ea3i nh\u1ecf. Th\u00e9p kh\u00f4ng g\u1ec9 ch\u1ed1ng ch\u1ea3y, \u0111\u00e0n h\u1ed3i m\u1ea1nh, v\u00e0 g\u00e2y kh\u00f3 kh\u0103n cho b\u00e1n k\u00ednh nh\u1ecf. Th\u00e9p cacbon th\u1ea5p \u0111\u1ee9ng gi\u1eefa nh\u01b0ng t\u1ea3i tr\u1ecdng t\u0103ng nhanh theo \u0111\u1ed9 d\u00e0y.<\/p>\n\n\n\n

    Khi b\u1ea1n ch\u1ecdn khu\u00f4n tr\u01b0\u1edbc khi ch\u1ecdn theo v\u1eadt li\u1ec7u, b\u1ea1n \u0111ang gi\u1ea3 \u0111\u1ecbnh r\u1eb1ng \u0111\u01b0\u1eddng cong \u1ee9ng su\u1ea5t\u2013bi\u1ebfn d\u1ea1ng kh\u00f4ng quan tr\u1ecdng.<\/p>\n\n\n\n

    N\u00f3 c\u00f3.<\/p>\n\n\n\n

    5052 d\u00e0y 2 mm trong r\u00e3nh V 16 mm s\u1ebd \u0111\u1ea1t g\u00f3c s\u1ea1ch v\u1edbi \u0111\u1ed9 xuy\u00ean n\u00f4ng v\u00e0 c\u00f3 th\u1ec3 b\u1eadt l\u1ea1i g\u00f3c kho\u1ea3ng 1\u00b0. C\u00f9ng thi\u1ebft l\u1eadp \u0111\u00f3 v\u1edbi 2 mm 304 s\u1ebd \u0111\u00f2i h\u1ecfi h\u00e0nh tr\u00ecnh s\u00e2u h\u01a1n, l\u1ef1c \u00e9p tr\u00ean m\u1ed7i m\u00e9t cao h\u01a1n, v\u00e0 ki\u1ec3m so\u00e1t chi\u1ec1u cao \u0111\u00f3ng ch\u1eb7t h\u01a1n. Ngo\u00e0i ra, r\u00e3nh V m\u1edf qu\u00e1 r\u1ed9ng \u0111\u1ec3 ki\u1ec3m so\u00e1t ch\u1eb7t ch\u1ebd b\u00e1n k\u00ednh b\u00ean trong, n\u00ean gi\u00e1 tr\u1ecb kh\u1ea5u tr\u1eeb u\u1ed1n c\u1ee7a b\u1ea1n s\u1ebd thay \u0111\u1ed5i m\u1ed7i khi \u0111i\u1ec1u ch\u1ec9nh.<\/p>\n\n\n\n

    S\u1ef1 thay \u0111\u1ed5i \u0111\u00f3 kh\u00f4ng ph\u1ea3i l\u1ed7i c\u1ee7a ng\u01b0\u1eddi v\u1eadn h\u00e0nh. \u0110\u00f3 l\u00e0 h\u00ecnh h\u1ecdc ph\u1ea3n \u1ee9ng v\u1edbi m\u00f4-\u0111un v\u1eadt li\u1ec7u.<\/p>\n\n\n\n

    Quy t\u1eafc x\u01b0\u1edfng s\u1ea3n xu\u1ea5t:<\/strong> H\u00e3y ch\u1ecdn k\u00edch th\u01b0\u1edbc r\u00e3nh V d\u1ef1a tr\u00ean b\u00e1n k\u00ednh b\u00ean trong c\u1ea7n thi\u1ebft v\u00e0 \u0111\u1ed9 b\u1ec1n k\u00e9o c\u1ee7a v\u1eadt li\u1ec7u tr\u01b0\u1edbc ti\u00ean \u2014 l\u1ef1c \u00e9p l\u00e0 r\u00e0ng bu\u1ed9c, kh\u00f4ng ph\u1ea3i \u0111i\u1ec3m kh\u1edfi \u0111\u1ea7u.<\/p>\n\n\n\n

    Theo nguy\u00ean t\u1eafc \u201cv\u1eadt li\u1ec7u tr\u01b0\u1edbc\u201d ngh\u0129a l\u00e0 b\u1ea1n h\u1ecfi: h\u1ee3p kim n\u00e0y ch\u1ecbu \u0111\u01b0\u1ee3c b\u00e1n k\u00ednh n\u00e0o m\u00e0 kh\u00f4ng b\u1ecb n\u1ee9t theo th\u1edb t\u1ea1i \u0111\u1ed9 d\u00e0y n\u00e0y? Sau \u0111\u00f3: m\u00e1y \u00e9p c\u1ee7a t\u00f4i c\u00f3 th\u1ec3 t\u1ea1o ra h\u00ecnh h\u1ecdc \u0111\u00f3 m\u00e0 kh\u00f4ng b\u1ecb l\u1ec7ch qu\u00e1 dung sai kh\u00f4ng?<\/p>\n\n\n\n

    N\u1ebfu b\u1ea1n b\u1eaft \u0111\u1ea7u t\u1eeb gi\u00e1 khu\u00f4n, b\u1ea1n \u0111\u00e3 \u0111\u1ea3o ng\u01b0\u1ee3c nguy\u00ean nh\u00e2n v\u00e0 k\u1ebft qu\u1ea3 r\u1ed3i.<\/p>\n\n\n\n

    V\u1eady chuy\u1ec7n g\u00ec x\u1ea3y ra khi v\u1eadt li\u1ec7u \u0111\u00e3 \u0111\u00fang, nh\u01b0ng h\u00ecnh h\u1ecdc c\u1ee7a chi ti\u1ebft kh\u00f4ng c\u00f2n \u0111\u01a1n gi\u1ea3n n\u1eefa?<\/p>\n\n\n\n

    B\u01b0\u1edbc 2: X\u00e1c \u0111\u1ecbnh \u0111\u1ed9 ph\u1ee9c t\u1ea1p c\u1ee7a u\u1ed1n \u2014 nh\u1eadn di\u1ec7n c\u00e1c v\u1ea5u, k\u00eanh ho\u1eb7c m\u00e9p g\u1ea5p c\u1ee5 th\u1ec3 khi\u1ebfn b\u1ed9 d\u1ee5ng c\u1ee5 ti\u00eau chu\u1ea9n b\u1ecb lo\u1ea1i b\u1ecf<\/h3>\n\n\n\n

    Ba ph\u1ebf ph\u1ea9m cho m\u1ed7i c\u00f4ng vi\u1ec7c. \u0110\u00f3 l\u00e0 c\u00e1i gi\u00e1 c\u1ee7a c\u00e1c v\u1ea5u h\u1ed9p n\u00f4ng v\u00e0 m\u00e9p g\u1ea5p tr\u1ea3 l\u1ea1i khi b\u1ea1n c\u1ed1 d\u00f9ng khu\u00f4n V th\u1eb3ng.<\/p>\n\n\n\n

    M\u1ed9t v\u1ea5u g\u1ea5p tr\u1ea3 40 mm tr\u00ean th\u00e9p 304 d\u00e0y 1.5 mm kh\u00f4ng h\u1ecfng v\u00ec ng\u01b0\u1eddi v\u1eadn h\u00e0nh qu\u00ean chi\u1ec1u s\u00e2u. N\u00f3 h\u1ecfng v\u00ec th\u00e0nh b\u00ean va v\u00e0o vai khu\u00f4n tr\u01b0\u1edbc khi \u0111\u1ea1t 90\u00b0. V\u00ec v\u1eady b\u1ea1n ph\u1ea3i chia l\u1ea7n \u00e9p. B\u1ea1n \u00e9p l\u1ea1i. B\u1ea1n \u0111\u00e1nh d\u1ea5u m\u1eb7t chi ti\u1ebft.<\/p>\n\n\n\n

    B\u1ea1n u\u1ed1n th\u00e0nh 88\u00b0 v\u00e0 hy v\u1ecdng \u0111\u1ed9 b\u1eadt l\u1ea1i s\u1ebd \u0111\u01b0a n\u00f3 t\u1edbi g\u00f3c chu\u1ea9n.<\/p>\n\n\n\n

    \u0110\u00f3 kh\u00f4ng ph\u1ea3i v\u1ea5n \u0111\u1ec1 \u0111\u00e0o t\u1ea1o. \u0110\u00f3 l\u00e0 h\u00ecnh h\u1ecdc sai cho d\u1ea1ng chi ti\u1ebft n\u00e0y.<\/p>\n\n\n\n

    K\u00eanh s\u00e2u h\u01a1n 80 mm, m\u00e9p g\u1ea5p ch\u1eb7t h\u01a1n 1.2\u00d7 \u0111\u1ed9 d\u00e0y v\u1eadt li\u1ec7u, c\u00e1c t\u1ea5m trang tr\u00ed d\u00e0i h\u01a1n 2 m \u2014 \u0111\u00e2y kh\u00f4ng ph\u1ea3i l\u00e0 c\u00f4ng vi\u1ec7c \u201cd\u00f9ng khu\u00f4n V c\u1ea9n th\u1eadn\u201d. Ch\u00fang c\u1ea7n khu\u00f4n g\u00f3c nh\u1ecdn, khu\u00f4n l\u1ec7ch ho\u1eb7c b\u1ed9 khu\u00f4n g\u1ea5p m\u00e9p ki\u1ec3m so\u00e1t l\u1ef1c \u0111\u1ee1 v\u00e0 \u0111\u1ed9 xuy\u00ean.<\/p>\n\n\n\n

    Nh\u01b0ng m\u1ed7i l\u1ea7n b\u1ea1n l\u01b0\u1edbt qua v\u00e0 l\u00e0m tr\u00f2n m\u1ed9t c\u1ea1nh, b\u1ea1n s\u1ebd ph\u1ea3i tr\u1ea3 gi\u00e1 cho s\u1ef1 ti\u1ec7n l\u1ee3i \u0111\u00f3 sau n\u00e0y.<\/p>\n\n\n\n

    Quy t\u1eafc x\u01b0\u1edfng s\u1ea3n xu\u1ea5t:<\/strong> N\u1ebfu chi ti\u1ebft bu\u1ed9c b\u1ea1n ph\u1ea3i \u00e9p nhi\u1ec1u l\u1ea7n m\u1edbi \u0111\u1ea1t g\u00f3c, th\u00ec khu\u00f4n \u0111\u00e3 sai.<\/p>\n\n\n\n

    \u0110\u1ed9 ph\u1ee9c t\u1ea1p lo\u1ea1i b\u1ecf t\u00ednh ph\u1ed5 d\u1ee5ng. C\u00e0ng nhi\u1ec1u \u0111\u1eb7c \u0111i\u1ec3m ch\u1ed3ng l\u00ean m\u1ed9t chi ti\u1ebft, b\u1ea1n c\u00e0ng \u00edt dung sai cho b\u1ed9 d\u1ee5ng c\u1ee5 chung.<\/p>\n\n\n\n

    V\u1eady l\u00e0m sao bi\u1ebft khi n\u00e0o \u0111i\u1ec1u n\u00e0y kh\u00f4ng c\u00f2n l\u00e0 kh\u00f3 ch\u1ecbu thi tho\u1ea3ng m\u00e0 tr\u1edf th\u00e0nh chi ph\u00ed c\u00f3 h\u1ec7 th\u1ed1ng?<\/p>\n\n\n\n

    B\u01b0\u1edbc 3: \u0110\u1ecdc t\u1ef7 l\u1ec7 ph\u1ebf ph\u1ea9m c\u1ee7a b\u1ea1n \u2014 t\u00edn hi\u1ec7u cho th\u1ea5y \u0111\u00e3 \u0111\u1ebfn l\u00fac chuy\u1ec3n t\u1eeb th\u1eed v\u00e0 sai sang th\u01b0 vi\u1ec7n khu\u00f4n chuy\u00ean d\u1ee5ng<\/h3>\n\n\n\n

    N\u1ebfu h\u01a1n m\u1ed9t trong hai m\u01b0\u01a1i s\u1ea3n ph\u1ea9m \u0111\u1ea7u ti\u00ean c\u1ea7n ch\u1ec9nh g\u00f3c v\u01b0\u1ee3t qu\u00e1 0.5\u00b0, chi\u1ebfn l\u01b0\u1ee3c khu\u00f4n c\u1ee7a b\u1ea1n mang t\u00ednh \u0111\u1ed1i ph\u00f3.<\/p>\n\n\n\n

    Kh\u00f4ng ph\u1ea3i xui r\u1ee7i. Kh\u00f4ng ph\u1ea3i m\u1ec7t m\u1ecfi c\u1ee7a ng\u01b0\u1eddi v\u1eadn h\u00e0nh. M\u00e0 l\u00e0 chi\u1ebfn l\u01b0\u1ee3c.<\/p>\n\n\n\n

    Nh\u1eadt k\u00fd thi\u1ebft l\u1eadp th\u1ee7 c\u00f4ng s\u1ebd kh\u00f4ng hi\u1ec3n th\u1ecb r\u00f5 r\u00e0ng \u0111i\u1ec1u \u0111\u00f3. Sai l\u1ec7ch c\u00f3 th\u1ec3 l\u00ean \u0111\u1ebfn m\u1ed9t ph\u1ea7n t\u01b0 trong c\u00e1c x\u01b0\u1edfng th\u1ef1c t\u1ebf. Nh\u01b0ng th\u00f9ng ph\u1ebf li\u1ec7u c\u1ee7a b\u1ea1n th\u00ec kh\u00f4ng bi\u1ebft n\u00f3i d\u1ed1i. H\u00e3y \u0111\u1ebfm s\u1ed1 l\u1ea7n l\u00e0m l\u1ea1i chi ti\u1ebft \u0111\u1ea7u ti\u00ean theo t\u1eebng lo\u1ea1i v\u1eadt li\u1ec7u v\u00e0 \u0111\u1ed9 d\u00e0y trong 30 ng\u00e0y. N\u1ebfu th\u00e9p kh\u00f4ng g\u1ec9 304 d\u00e0y 3 mm c\u00f3 s\u1ed1 l\u1ea7n l\u00e0m l\u1ea1i g\u1ea5p ba l\u1ea7n so v\u1edbi th\u00e9p A36 d\u00e0y 3 mm, v\u00e0 c\u1ea3 hai \u0111\u1ec1u \u0111\u01b0\u1ee3c ch\u1ea1y trong khu\u00f4n ch\u1eef V 24 mm, th\u00ec khu\u00f4n \u0111\u00f3 kh\u00f4ng trung l\u1eadp \u2014 n\u00f3 b\u1ecb l\u1ec7ch.<\/p>\n\n\n\n

    D\u1ee5ng c\u1ee5 b\u1ecb l\u1ec7ch t\u1ea1o ra ph\u1ebf li\u1ec7u c\u00f3 th\u1ec3 \u0111o\u00e1n tr\u01b0\u1edbc \u0111\u01b0\u1ee3c.<\/p>\n\n\n\n

    V\u00e0 khi ph\u1ebf li\u1ec7u t\u1eadp trung quanh c\u00e1c h\u1ee3p kim ho\u1eb7c lo\u1ea1i g\u1edd c\u1ee5 th\u1ec3, \u0111\u00f3 l\u00e0 d\u1ea5u hi\u1ec7u \u0111\u1ec3 b\u1ea1n \u0111\u1ea7u t\u01b0 v\u00e0o m\u1ed9t h\u00ecnh d\u1ea1ng khu\u00f4n chuy\u00ean d\u1ee5ng cho nh\u00f3m \u0111\u00f3. C\u00f3 th\u1ec3 \u0111i\u1ec1u \u0111\u00f3 ngh\u0129a l\u00e0 m\u1ed9t khu\u00f4n g\u00f3c nh\u1ecdn kh\u1edbp v\u1edbi \u0111\u1ed9 \u0111\u00e0n h\u1ed3i c\u1ee7a th\u00e9p kh\u00f4ng g\u1ec9. Ho\u1eb7c c\u00f3 th\u1ec3 l\u00e0 m\u1ed9t khu\u00f4n vai h\u1eb9p \u0111\u1ec3 ki\u1ec3m so\u00e1t b\u00e1n k\u00ednh u\u1ed1n tr\u00ean nh\u00f4m trang tr\u00ed.<\/p>\n\n\n\n

    N\u1ebfu c\u00e1c l\u1ea7n thay khu\u00f4n \u0111ang l\u00e0m ch\u1eadm b\u1ea1n, h\u00e3y k\u1ebft h\u1ee3p b\u1ed9 th\u01b0 vi\u1ec7n \u0111\u00f3 v\u1edbi h\u1ec7 k\u1eb9p thay nhanh. M\u1ed9t x\u01b0\u1edfng h\u00e0ng kh\u00f4ng \u0111\u00e3 gi\u1ea3m th\u1eddi gian thay khu\u00f4n h\u01a1n m\u1ed9t n\u1eeda ch\u1ec9 b\u1eb1ng c\u00e1ch lo\u1ea1i b\u1ecf ma s\u00e1t khi b\u1eaft bu-l\u00f4ng ra kh\u1ecfi quy tr\u00ecnh. Khu\u00f4n chuy\u00ean d\u1ee5ng m\u00e0 kh\u00f4ng c\u00f3 k\u1eb9p nhanh ch\u1ec9 \u0111\u01a1n gi\u1ea3n l\u00e0 chuy\u1ec3n d\u1ecbch l\u00e3ng ph\u00ed sang h\u01b0\u1edbng kh\u00e1c.<\/p>\n\n\n\n

    Quy t\u1eafc x\u01b0\u1edfng s\u1ea3n xu\u1ea5t:<\/strong> Khi c\u00e1c m\u1eabu ph\u1ebf li\u1ec7u l\u1eb7p l\u1ea1i theo v\u1eadt li\u1ec7u v\u00e0 \u0111\u1ed9 d\u00e0y, h\u00e3y ng\u1eebng \u0111i\u1ec1u ch\u1ec9nh \u0111\u1ed9 s\u00e2u h\u00e0nh tr\u00ecnh v\u00e0 thay khu\u00f4n \u0111i.<\/p>\n\n\n\n

    Th\u1eed v\u00e0 sai c\u00f3 v\u1ebb r\u1ebb h\u01a1n v\u00ec khu\u00f4n \u0111\u00e3 \u0111\u01b0\u1ee3c tr\u1ea3 ti\u1ec1n r\u1ed3i.<\/p>\n\n\n\n

    Nh\u01b0ng kh\u00f4ng h\u1ec1 nh\u1ecf.<\/p>\n\n\n\n

    V\u1eady b\u1ea1n c\u1ea7n t\u1ed1i thi\u1ec3u bao nhi\u00eau khu\u00f4n tr\u00ean s\u00e0n \u0111\u1ec3 ng\u1eebng gi\u1ea3 v\u1edd r\u1eb1ng m\u1ed9t c\u1edd-l\u00ea ph\u00f9 h\u1ee3p v\u1edbi m\u1ecdi bu-l\u00f4ng?<\/p>\n\n\n\n

    T\u1ed3n kho t\u1ed1i thi\u1ec3u ba khu\u00f4n cho c\u00e1c x\u01b0\u1edfng gia c\u00f4ng nhi\u1ec1u lo\u1ea1i v\u1eadt li\u1ec7u v\u00e0 \u0111\u1ed9 d\u00e0y kh\u00e1c nhau<\/h3>\n\n\n\n

    H\u1ea7u h\u1ebft c\u00e1c x\u01b0\u1edfng gia c\u00f4ng h\u1ed7n h\u1ee3p v\u1eadt li\u1ec7u c\u00f3 th\u1ec3 gi\u1ea3m m\u1ed9t n\u1eeda ph\u1ebf li\u1ec7u chi ti\u1ebft \u0111\u1ea7u ti\u00ean ch\u1ec9 v\u1edbi ba khu\u00f4n \u0111\u01b0\u1ee3c ch\u1ecdn c\u00f3 ch\u1ee7 \u0111\u00edch \u2014 kh\u00f4ng c\u1ea7n t\u1edbi ba m\u01b0\u01a1i.<\/p>\n\n\n\n

    M\u1ed9t: khu\u00f4n ch\u1eef V r\u1ed9ng (ph\u1ea1m vi 10\u00d7\u201312\u00d7 \u0111\u1ed9 d\u00e0y) \u0111\u01b0\u1ee3c x\u1ebfp h\u1ea1ng an to\u00e0n trong gi\u1edbi h\u1ea1n 70% theo t\u1ea3i tr\u1ecdng \u0111\u00e3 x\u00e1c minh tr\u00ean m\u1ed7i m\u00e9t, d\u00e0nh cho th\u00e9p m\u1ec1m d\u00e0y, n\u01a1i dung sai b\u00e1n k\u00ednh l\u1ecfng l\u1ebbo v\u00e0 l\u1ef1c chi ph\u1ed1i.<\/p>\n\n\n\n

    Hai: khu\u00f4n ki\u1ec3m so\u00e1t b\u00e1n k\u00ednh \u2014 th\u01b0\u1eddng l\u00e0 6\u00d7\u20138\u00d7 \u0111\u1ed9 d\u00e0y \u2014 cho th\u00e9p kh\u00f4ng g\u1ec9 v\u00e0 nh\u1eefng c\u00f4ng vi\u1ec7c y\u00eau c\u1ea7u b\u00e1n k\u00ednh ch\u1eb7t ch\u1ebd, n\u01a1i \u0111\u1ed9 \u0111\u00e0n h\u1ed3i v\u00e0 \u0111\u1ed9 s\u00e2u th\u00e2m nh\u1eadp ph\u1ea3i c\u00f3 t\u00ednh d\u1ef1 \u0111o\u00e1n.<\/p>\n\n\n\n

    Ba: khu\u00f4n g\u00f3c nh\u1ecdn ho\u1eb7c h\u00ecnh d\u1ea1ng \u0111\u1eb7c bi\u1ec7t (30\u00b0 ho\u1eb7c 28\u00b0) cho ph\u00e9p b\u1ea1n u\u1ed1n kh\u00f4ng ch\u1ea1m \u0111\u1ebfn 90\u00b0 v\u1edbi kho\u1ea3ng h\u1edf cho g\u1edd h\u1ed3i v\u00e0 h\u1ed9p n\u00f4ng m\u00e0 kh\u00f4ng ph\u1ea3i u\u1ed1n t\u00e1ch nhi\u1ec1u l\u1ea7n.<\/p>\n\n\n\n

    Ch\u1ec9 v\u1eady th\u00f4i.<\/p>\n\n\n\n

    Nh\u01b0ng \u0111\u00e2y l\u00e0 s\u1ef1 thay \u0111\u1ed5i g\u00f3c nh\u00ecn: b\u1ea1n kh\u00f4ng mua ch\u00fang v\u00ec danh m\u1ee5c n\u00f3i r\u1eb1ng ch\u00fang linh ho\u1ea1t. B\u1ea1n mua ch\u00fang v\u00ec t\u1ed5 h\u1ee3p v\u1eadt li\u1ec7u c\u1ee7a b\u1ea1n v\u00e0 gi\u1edbi h\u1ea1n \u0111o \u0111\u01b0\u1ee3c c\u1ee7a m\u00e1y c\u1ee7a b\u1ea1n cho th\u1ea5y ch\u00fang \u1ed5n \u0111\u1ecbnh \u1edf t\u1ea3i tr\u1ecdng c\u1ee5 th\u1ec3 tr\u00ean m\u1ed7i m\u00e9t v\u00e0 \u0111\u1ed9 s\u00e2u th\u00e2m nh\u1eadp nh\u1ea5t \u0111\u1ecbnh.<\/p>\n\n\n\n

    B\u1ea1n kh\u00f4ng c\u00f2n h\u1ecfi, \u201cCh\u00fang ta th\u01b0\u1eddng d\u00f9ng V bao nhi\u00eau cho t\u1ea5m 3 mm?\u201d<\/p>\n\n\n\n

    B\u1ea1n \u0111ang h\u1ecfi, \u201cV\u1edbi h\u1ee3p kim n\u00e0y, b\u00e1n k\u00ednh n\u00e0y v\u00e0 \u0111\u01b0\u1eddng cong \u0111\u1ed9 v\u00f5ng \u0111\u00e3 \u0111\u01b0\u1ee3c ki\u1ec3m ch\u1ee9ng c\u1ee7a m\u00e1y u\u1ed1n c\u1ee7a t\u00f4i, h\u00ecnh d\u1ea1ng n\u00e0o gi\u00fap t\u00f4i gi\u1eef trong \u00b10,25\u00b0 m\u00e0 kh\u00f4ng c\u1ea7n u\u1ed1n l\u1ea1i?\u201d<\/p>\n\n\n\n

    B\u1eaft \u0111\u1ea7u t\u1eeb v\u1eadt l\u00fd c\u1ee7a v\u1eadt li\u1ec7u. X\u00e1c nh\u1eadn gi\u1edbi h\u1ea1n c\u1ee7a m\u00e1y d\u01b0\u1edbi t\u1ea3i. Sau \u0111\u00f3 \u0111\u1ec3 h\u00ecnh h\u1ecdc tu\u00e2n theo hai s\u1ef1 th\u1eadt \u0111\u00f3.<\/p>\n\n\n\n

    V\u00e0 n\u1ebfu c\u00f4ng vi\u1ec7c ng\u00e0y mai l\u00e0 th\u00e9p kh\u00f4ng g\u1ec9 304 d\u00e0y 4 mm v\u1edbi b\u00e1n k\u00ednh trong b\u1eb1ng 1\u00d7 \u0111\u1ed9 d\u00e0y tr\u00ean chi\u1ec1u d\u00e0i 2,5 m, b\u1ea1n c\u00f3 th\u1ef1c s\u1ef1 mu\u1ed1n bi\u1ebft gi\u1edbi h\u1ea1n c\u1ee7a m\u00ecnh b\u1eb1ng c\u00e1ch l\u1eafng nghe khung m\u00e1y r\u00ean r\u1ec9 kh\u00f4ng?<\/p>\n\n\n\n

    T\u00e0i nguy\u00ean li\u00ean quan v\u00e0 c\u00e1c b\u01b0\u1edbc ti\u1ebfp theo<\/h2>\n\n\n\n