\u0110\u00f3 l\u00e0 l\u00fac b\u1ea1n b\u1eaft \u0111\u1ea7u \u0111\u1eb7t ra m\u1ed9t c\u00e2u h\u1ecfi nguy hi\u1ec3m: ch\u00ednh x\u00e1c th\u00ec c\u00f4ng th\u1ee9c \u0111\u00f3 gi\u1ea3 \u0111\u1ecbnh \u0111i\u1ec1u g\u00ec?<\/p>\n\n\n\n
Huy\u1ec1n tho\u1ea1i v\u1ec1 c\u00f4ng th\u1ee9c ph\u1ed5 qu\u00e1t (v\u00e0 l\u00fd do t\u1ea1i sao n\u00f3 c\u1ee9 l\u00e0m h\u1ecfng d\u1ee5ng c\u1ee5)<\/h2>\n\n\n\n
B\u01b0\u1edbc v\u00e0o b\u1ea5t k\u1ef3 x\u01b0\u1edfng gia c\u00f4ng n\u00e0o, s\u1ebd c\u00f3 ai \u0111\u00f3 \u0111\u1ecdc n\u00f3 vanh v\u00e1ch: 575 nh\u00e2n v\u1edbi \u0111\u1ed9 d\u00e0y b\u00ecnh ph\u01b0\u01a1ng nh\u00e2n v\u1edbi chi\u1ec1u d\u00e0i, chia cho \u0111\u1ed9 m\u1edf khu\u00f4n. Nghe c\u1ee9 nh\u01b0 \u0111\u1ecbnh lu\u1eadt tr\u1ecdng l\u1ef1c. Ch\u1ec9 c\u1ea7n nh\u1eadp s\u1ed1, l\u1ef1c s\u1ebd hi\u1ec7n ra.<\/p>\n\n\n\n
Nh\u01b0ng 575 kh\u00f4ng ph\u1ea3i l\u00e0 \u0111\u1ecbnh lu\u1eadt v\u1eadt l\u00fd. N\u00f3 l\u00e0 m\u1ed9t l\u1ed1i t\u1eaft \u0111\u01b0\u1ee3c t\u1ea1o ra quanh m\u1ed9t tr\u01b0\u1eddng h\u1ee3p r\u1ea5t c\u1ee5 th\u1ec3: u\u1ed1n kh\u00f4ng ch\u1ea1m th\u00e9p th\u01b0\u1eddng, kho\u1ea3ng 60.000 PSI \u0110\u1ed8 B\u1ec0N K\u00c9O<\/strong>, v\u1edbi \u0111\u1ed9 m\u1edf khu\u00f4n x\u1ea5p x\u1ec9 b\u1eb1ng t\u00e1m l\u1ea7n \u0111\u1ed9 d\u00e0y v\u1eadt li\u1ec7u. Thay \u0111\u1ed5i b\u1ea5t k\u1ef3 y\u1ebfu t\u1ed1 n\u00e0o trong \u0111\u00f3, b\u1ea1n kh\u00f4ng c\u00f2n \u201cg\u1ea7n \u0111\u00fang\u201d n\u1eefa. B\u1ea1n \u0111\u00e3 b\u01b0\u1edbc sang m\u1ed9t ph\u01b0\u01a1ng tr\u00ecnh kh\u00e1c.<\/p>\n\n\n\n T\u00f4i \u0111\u00e3 th\u1ea5y m\u1ed9t c\u00f4ng vi\u1ec7c d\u1ef1 t\u00ednh c\u1ea7n 90 t\u1ea5n bi\u1ebfn th\u00e0nh th\u1ef1c t\u1ebf 130 t\u1ea5n ch\u1ec9 v\u00ec ai \u0111\u00f3 thay khu\u00f4n ch\u1eb7t h\u01a1n \u0111\u1ec3 \u201cl\u00e0m s\u1eafc b\u00e1n k\u00ednh.\u201d M\u00e1y kh\u00f4ng ph\u00e0n n\u00e0n. B\u1ed9 d\u1ee5ng c\u1ee5 th\u00ec c\u00f3.<\/p>\n\n\n\n H\u00e3y n\u00f3i c\u1ee5 th\u1ec3.<\/p>\n\n\n\n D\u1ea1ng \u0111\u1ea7y \u0111\u1ee7 ph\u00eda sau l\u1ed1i t\u1eaft 575 \u0111\u00f3 tr\u00f4ng nh\u01b0 th\u1ebf n\u00e0y:<\/p>\n\n\n\n L\u1ef1c t\u1ef7 l\u1ec7 v\u1edbi \u0110\u1ed8 B\u1ec0N K\u00c9O \u00d7 \u0110\u1ed8 D\u00c0Y\u00b2 \u00d7 CHI\u1ec0U D\u00c0I \u00f7 \u0110\u1ed8 M\u1ede KHU\u00d4N<\/strong>.<\/p>\n\n\n\n Thu\u1eadt ng\u1eef b\u00ecnh ph\u01b0\u01a1ng \u0110\u1ed8 D\u00c0Y<\/strong> l\u00e0 qu\u1ea3 m\u00ecn \u0111\u1ea7u ti\u00ean. N\u1ebfu t\u0103ng g\u1ea5p \u0111\u00f4i \u0111\u1ed9 d\u00e0y, b\u1ea1n kh\u00f4ng ch\u1ec9 t\u0103ng g\u1ea5p \u0111\u00f4i l\u1ef1c \u2014 b\u1ea1n t\u0103ng g\u1ea5p b\u1ed1n l\u1ea7n. Gi\u1edd h\u00e3y ch\u00fa \u00fd xem c\u00f2n th\u1ee9 g\u00ec \u1ea9n \u1edf \u0111\u00f3: \u0110\u1ed8 M\u1ede KHU\u00d4N<\/strong> \u1edf m\u1eabu s\u1ed1. Gi\u1ea3m k\u00edch th\u01b0\u1edbc KHOANG M\u1ede V\u2011DIE<\/strong> b\u1edfi 10%, v\u00e0 l\u1ef1c kh\u00f4ng t\u0103ng l\u00ean m\u1ed9t c\u00e1ch nh\u1eb9 nh\u00e0ng. N\u00f3 nh\u1ea3y v\u1ecdt v\u00ec h\u00ecnh h\u1ecdc t\u1ea1o ra \u0111\u00f2n b\u1ea9y.<\/p>\n\n\n\n C\u00f2n h\u1eb1ng s\u1ed1 575? \u0110\u00f3 ch\u1ec9 l\u00e0 c\u00f4ng th\u1ee9c to\u00e1n h\u1ecdc \u0111\u00e3 \u0111\u01b0\u1ee3c gi\u1ea3i cho th\u00e9p th\u01b0\u1eddng v\u1edbi kho\u1ea3ng 60.000 PSI c\u00f9ng t\u1ef7 l\u1ec7 8\u00d7 T\u1ef6 L\u1ec6 KHU\u00d4N<\/strong> trong u\u1ed1n kh\u00f4ng ch\u1ea1m. N\u00f3 l\u00e0 c\u01a1 s\u1edf, kh\u00f4ng ph\u1ea3i l\u00e0 ph\u00e9p m\u00e0u.<\/p>\n\n\n\n Nhi\u1ec1u n\u0103m tr\u01b0\u1edbc, m\u1ed9t l\u1eadp tr\u00ecnh vi\u00ean m\u1edbi ch\u1ea1y th\u00e9p kh\u00f4ng g\u1ec9 \u2014 90.000 PSI \u0110\u1ed8 B\u1ec0N K\u00c9O<\/strong> \u2014 qua c\u00f9ng thi\u1ebft l\u1eadp 575 m\u00e0 kh\u00f4ng \u0111i\u1ec1u ch\u1ec9nh h\u1ec7 s\u1ed1 v\u1eadt li\u1ec7u. C\u1ed1i \u0111\u1ed9t v\u1eabn s\u1ed1ng s\u00f3t. Khu\u00f4n d\u01b0\u1edbi b\u1ecb ph\u1ed3ng t\u1ea1i vai. Ch\u00fang t\u00f4i kh\u00f4ng m\u1ea5t m\u1ed9t ng\u00e0y, ch\u00fang t\u00f4i m\u1ea5t uy t\u00edn.<\/p>\n\n\n\n V\u00ec v\u1eady khi b\u1ea1n nh\u1eadp 575 v\u00e0o m\u00e1y t\u00ednh, h\u00e3y t\u1ef1 h\u1ecfi: b\u1ea1n v\u1eabn c\u00f2n trong ph\u1ea1m vi gi\u1ea3 \u0111\u1ecbnh c\u1ee7a n\u00f3 ch\u1ee9?<\/p>\n\n\n\n T\u00f4i bi\u1ebft v\u00ec sao m\u1ecdi ng\u01b0\u1eddi th\u00edch c\u00e1ch t\u00ednh nhanh \u0111\u00f3. \u0110\u1ed8 D\u00c0Y \u00d7 CHI\u1ec0U D\u00c0I<\/strong> nghe c\u00f3 th\u1ec3 ch\u1ea1m t\u1edbi. B\u1ea1n th\u1ea5y n\u00f3 tr\u00ean b\u1ea3n v\u1ebd. \u0110o \u0111\u01b0\u1ee3c b\u1eb1ng th\u01b0\u1edbc d\u00e2y.<\/p>\n\n\n\n B\u1ea1n kh\u00f4ng th\u1ec3 th\u1ea5y \u0110\u1ed8 B\u1ec0N K\u00c9O<\/strong> vi\u1ec7c thay \u0111\u1ed5i t\u1eeb 60.000 l\u00ean 80.000 PSI ch\u1ec9 v\u00ec b\u1ed9 ph\u1eadn mua h\u00e0ng t\u00ecm \u0111\u01b0\u1ee3c nh\u00e0 cung c\u1ea5p r\u1ebb h\u01a1n. B\u1ea1n kh\u00f4ng c\u1ea3m nh\u1eadn \u0111\u01b0\u1ee3c b\u01b0\u1edbc nh\u1ea3y t\u1eeb u\u1ed1n kh\u00f4ng ch\u1ea1m sang \u00e9p \u0111\u00e1y, n\u01a1i di\u1ec7n t\u00edch ti\u1ebfp x\u00fac \u2014 v\u00e0 l\u1ef1c c\u1ea7n thi\u1ebft \u2014 t\u0103ng v\u1ecdt nhanh ch\u00f3ng. V\u00e0 b\u1ea1n ch\u1eafc ch\u1eafn kh\u00f4ng \u0111\u1ec3 \u00fd khi ai \u0111\u00f3 \u0111\u1ed5i t\u1eeb t\u1ef7 l\u1ec7 8\u00d7 sang 6\u00d7 KHOANG M\u1ede V\u2011DIE<\/strong> \u0111\u1ec3 ki\u1ec3m so\u00e1t b\u00e1n k\u00ednh b\u00ean trong, th\u1ef1c t\u1ebf l\u00e0 t\u0103ng m\u1ea1nh l\u1ef1c c\u1ea7n thi\u1ebft m\u00e0 kh\u00f4ng h\u1ec1 ch\u1ea1m v\u00e0o b\u1ea3n v\u1ebd.<\/p>\n\n\n\n L\u1ef1c kh\u00f4ng quan t\u00e2m th\u1ee9 g\u00ec d\u1ec5 \u0111o. N\u00f3 ph\u1ea3n \u1ee9ng theo s\u1ee9c kh\u00e1ng v\u1eadt li\u1ec7u v\u00e0 h\u00ecnh h\u1ecdc.<\/p>\n\n\n\n Ch\u00fang t\u00f4i t\u1eebng c\u00f3 m\u1ed9t m\u00e1y 290 t\u1ea5n b\u1ecb \u0111\u1ee9ng gi\u1eefa h\u00e0nh tr\u00ecnh khi u\u1ed1n nhi\u1ec1u g\u00f3c c\u00f9ng l\u00fac. Tr\u00ean gi\u1ea5y, m\u1ed7i l\u1ea7n u\u1ed1n \u0111\u1ec1u \u201can to\u00e0n.\u201d Nh\u01b0ng c\u00f9ng l\u00fac, trong m\u1ed9t c\u00fa, t\u1ea3i tr\u1ecdng ch\u1ed3ng l\u00ean nhau. Ph\u00e9p t\u00ednh kh\u00f4ng sai. N\u00f3 ch\u1ec9 ch\u01b0a \u0111\u1ea7y \u0111\u1ee7.<\/p>\n\n\n\n \u201cX\u1ea5p x\u1ec9 \u0111\u1ee7\u201d l\u00e0 c\u00e1ch m\u00e0 d\u1ee5ng c\u1ee5 ch\u1ebft \u0111i.<\/p>\n\n\n\n M\u1ed9t s\u1ef1 \u0111\u00e1nh gi\u00e1 th\u1ea5p 20% kh\u00f4ng ch\u1ec9 c\u00f3 nguy c\u01a1 qu\u00e1 t\u1ea3i; n\u00f3 t\u1eadp trung \u1ee9ng su\u1ea5t t\u1ea1i vai khu\u00f4n v\u00e0 \u0111\u1ea7u c\u1ed1i. Th\u00e9p kh\u00f4ng c\u1ea3nh b\u00e1o b\u1ea1n m\u1ed9t c\u00e1ch nh\u1eb9 nh\u00e0ng. N\u00f3 bi\u1ebfn d\u1ea1ng, r\u1ed3i n\u00f3 g\u00e3y. V\u00e0 khi n\u00f3 g\u00e3y, c\u00fa s\u1ed1c \u0111\u00f3 s\u1ebd truy\u1ec1n ng\u01b0\u1ee3c v\u00e0o tr\u1ee5c m\u00e1y, b\u1ed9 d\u1eabn h\u01b0\u1edbng, v\u00e0 khung m\u00e1y c\u1ee7a b\u1ea1n.<\/p>\n\n\n\n T\u00f4i \u0111\u00e3 th\u1ea5y m\u1ed9t m\u00e1y ch\u1ea5n th\u1ee7y l\u1ef1c b\u1ecb xo\u1eafn nh\u1eb9 d\u01b0\u1edbi t\u1ea3i tr\u1ecdng b\u1ea5t ng\u1edd \u0111\u1ebfn m\u1ee9c n\u00f3 b\u1eaft \u0111\u1ea7u t\u1ea1o ra c\u00e1c g\u00f3c kh\u00f4ng \u0111\u1ed3ng nh\u1ea5t d\u1ecdc theo b\u00e0n m\u00e1y. Kh\u00f4ng qu\u00e1 nghi\u00eam tr\u1ecdng. Ch\u1ec9 l\u00e0 m\u1ea5t d\u1ea7n s\u1ef1 song song, d\u1eabn \u0111\u1ebfn h\u00e0ng tu\u1ea7n li\u1ec1n truy t\u00ecm nh\u1eefng v\u1ea5n \u0111\u1ec1 \u0111\u00e0n h\u1ed3i gi\u1ea3 t\u01b0\u1edfng. Nguy\u00ean nh\u00e2n g\u1ed1c r\u1ec5? L\u1ef1c ch\u1ea5n \u0111\u01b0\u1ee3c t\u00ednh to\u00e1n cho u\u1ed1n kh\u00f4ng ch\u1ea1m \u0111\u00e1y, nh\u01b0ng c\u00f4ng vi\u1ec7c l\u1ea1i ch\u1ea1y g\u1ea7n v\u1edbi l\u1ef1c ch\u1ea5n ch\u1ea1m \u0111\u00e1y.<\/p>\n\n\n\n C\u00f4ng th\u1ee9c kh\u00f4ng sai. Ng\u01b0\u1eddi v\u1eadn h\u00e0nh sai \u2014 v\u00ec \u0111\u00e3 cho r\u1eb1ng n\u00f3 mang t\u00ednh ph\u1ed5 qu\u00e1t.<\/p>\n\n\n\n B\u1ea1n kh\u00f4ng l\u00e0m h\u1ecfng d\u1ee5ng c\u1ee5 v\u00ec to\u00e1n h\u1ecdc ph\u1ee9c t\u1ea1p. B\u1ea1n l\u00e0m h\u1ecfng n\u00f3 v\u00ec b\u1ea1n ng\u1eebng \u0111\u1eb7t c\u00e2u h\u1ecfi v\u1ec1 nh\u1eefng gi\u1ea3 \u0111\u1ecbnh m\u00e0 to\u00e1n h\u1ecdc d\u1ef1a v\u00e0o.<\/p>\n\n\n\n V\u00e0i n\u0103m tr\u01b0\u1edbc, ch\u00fang t\u00f4i b\u00e1o gi\u00e1 m\u1ed9t l\u00f4 th\u00e9p t\u1ea5m d\u00e0y 1\/4 inch, lo\u1ea1i A36, d\u00e0i 10 feet. V\u1edbi khu\u00f4n V r\u1ed9ng 3 inch, t\u1ea5m \u0111\u01b0\u1ee3c t\u00ednh ra kho\u1ea3ng 139 t\u1ea5n. \u1ed4n. An to\u00e0n tr\u00ean m\u00e1y ch\u1ea5n 150 t\u1ea5n. C\u00f9ng \u0111\u1ed9 d\u00e0y, c\u00f9ng chi\u1ec1u d\u00e0i \u2014 nh\u01b0ng kh\u00e1ch h\u00e0ng mu\u1ed1n b\u00e1n k\u00ednh trong nh\u1ecf h\u01a1n, n\u00ean ng\u01b0\u1eddi l\u1eafp \u0111\u1eb7t \u0111\u00e3 l\u1ea5y khu\u00f4n r\u1ed9ng 1,5 inch.<\/p>\n\n\n\n L\u1ef1c ch\u1ea5n t\u0103ng v\u1ecdt l\u00ean kho\u1ea3ng 300 t\u1ea5n.<\/p>\n\n\n\n Kh\u00f4ng c\u00f3 g\u00ec kh\u00e1c thay \u0111\u1ed5i. Kh\u00f4ng ph\u1ea3i \u0110\u1ed8 D\u00c0Y<\/strong>. Kh\u00f4ng ph\u1ea3i CHI\u1ec0U D\u00c0I<\/strong>. Ch\u1ec9 l\u00e0 h\u00ecnh h\u1ecdc.<\/p>\n\n\n\n \u0110\u00f3 l\u00e0 l\u00fac n\u00f3 kh\u00f4ng c\u00f2n l\u00e0 \u201cv\u1ea5n \u0111\u1ec1 \u0111\u1ed9 d\u00e0y\u201d n\u1eefa m\u00e0 tr\u1edf th\u00e0nh v\u1ea5n \u0111\u1ec1 v\u1ec1 l\u1ef1c c\u1ea3n. M\u00e1y ch\u1ea5n kh\u00f4ng quan t\u00e2m b\u1ea3n v\u1ebd ghi g\u00ec. N\u00f3 ph\u1ea3n \u1ee9ng v\u1edbi ba y\u1ebfu t\u1ed1: l\u1ef1c c\u1ea3n c\u1ee7a v\u1eadt li\u1ec7u \u0111\u1ed1i v\u1edbi gi\u00e3n d\u00e0i, l\u1ee3i th\u1ebf \u0111\u00f2n b\u1ea9y m\u00e0 h\u00ecnh d\u1ea1ng khu\u00f4n c\u1ee7a b\u1ea1n t\u1ea1o ra, v\u00e0 m\u1ee9c \u0111\u1ed9 b\u1ea1n \u00e9p kim lo\u1ea1i v\u00e0o \u0111\u00fang h\u00ecnh d\u1ea1ng.<\/p>\n\n\n\n B\u1ecf s\u00f3t m\u1ed9t y\u1ebfu t\u1ed1, v\u00e0 con s\u1ed1 t\u1eaft 575 c\u1ee7a b\u1ea1n bi\u1ebfn th\u00e0nh m\u1ed9t kh\u1ea9u s\u00fang n\u1ea1p sai \u0111\u1ea1n.<\/p>\n\n\n\n V\u1eady n\u1ebfu 575 ch\u1ec9 ho\u1ea1t \u0111\u1ed9ng trong ph\u1ea1m vi gi\u1ea3 \u0111\u1ecbnh c\u1ee7a n\u00f3, l\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 b\u1ea1n t\u00ednh to\u00e1n ch\u00ednh x\u00e1c khi v\u01b0\u1ee3t ra ngo\u00e0i gi\u1edbi h\u1ea1n \u0111\u00f3? H\u00e3y ng\u1eebng coi l\u1ef1c ch\u1ea5n nh\u01b0 m\u1ed9t gi\u00e1 tr\u1ecb tr\u00ean b\u1ea3ng tra c\u1ee9u v\u00e0 b\u1eaft \u0111\u1ea7u coi n\u00f3 nh\u01b0 m\u1ed9t v\u1ea5n \u0111\u1ec1 v\u1eadt l\u00fd: L\u1ef0C \u221d GI\u1edaI H\u1ea0N B\u1ec0N K\u00c9O \u00d7 \u0110\u1ed8 D\u00c0Y\u00b2 \u00d7 CHI\u1ec0U D\u00c0I \u00f7 KH\u1ed4 KHU\u00d4N<\/strong> \u2014 r\u1ed3i \u0111i\u1ec1u ch\u1ec9nh theo ph\u01b0\u01a1ng ph\u00e1p u\u1ed1n.<\/p>\n\n\n\n Ba bi\u1ebfn s\u1ed1. M\u1ed7i c\u00e1i \u0111\u1ec1u c\u00f3 th\u1ec3 khi\u1ebfn t\u1ea3i tr\u1ecdng c\u1ee7a b\u1ea1n t\u0103ng g\u1ea5p \u0111\u00f4i m\u00e0 kh\u00f4ng c\u1ea7n thay \u0111\u1ed5i b\u1ea3n v\u1ebd.<\/p>\n\n\n\n H\u00e3y xem x\u00e9t t\u1eebng c\u00e1i m\u1ed9t.<\/p>\n\n\n\n M\u1ed9t l\u1eadp tr\u00ecnh vi\u00ean t\u1eebng thay lo\u1ea1i th\u00e9p m\u1ec1m 60.000 PSI b\u1eb1ng th\u00e9p kh\u00f4ng g\u1ec9 90.000 PSI m\u00e0 gi\u1eef nguy\u00ean m\u1ecdi th\u1ee9 kh\u00e1c trong ph\u00e9p t\u00ednh. C\u00f9ng t\u1ea5m d\u00e0y 1\/4 inch. C\u00f9ng khu\u00f4n. C\u00f9ng chi\u1ec1u d\u00e0i.<\/p>\n\n\n\n Tr\u00ean gi\u1ea5y t\u1edd \u01b0? C\u00e0i \u0111\u1eb7t y h\u1ec7t nhau.<\/p>\n\n\n\n Trong th\u1ef1c t\u1ebf, l\u01b0\u1ee3ng l\u1ef1c y\u00eau c\u1ea7u \u0111\u00e3 t\u0103ng 50%.<\/p>\n\n\n\n \u0110\u00e2y l\u00e0 l\u00fd do. Khi b\u1ea1n u\u1ed1n b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p air-bending, b\u1ea1n \u0111ang k\u00e9o gi\u00e3n c\u00e1c s\u1ee3i b\u00ean ngo\u00e0i c\u1ee7a v\u1eadt li\u1ec7u v\u01b0\u1ee3t qu\u00e1 gi\u1edbi h\u1ea1n ch\u1ea3y. \u0110\u1ed9 b\u1ec1n k\u00e9o c\u00e0ng cao \u0110\u1ed8 B\u1ec0N K\u00c9O<\/strong>, c\u00e1c s\u1ee3i \u0111\u00f3 c\u00e0ng ch\u1ecbu \u0111\u01b0\u1ee3c nhi\u1ec1u \u1ee9ng su\u1ea5t tr\u01b0\u1edbc khi b\u1ecb bi\u1ebfn d\u1ea1ng d\u1ebbo. C\u00f4ng th\u1ee9c kh\u00f4ng \u201cquan t\u00e2m\u201d \u0111\u1ebfn nh\u00e3n th\u00e9p kh\u00f4ng g\u1ec9 hay th\u00e9p carbon. N\u00f3 t\u1ef7 l\u1ec7 tr\u1ef1c ti\u1ebfp v\u1edbi \u0110\u1ed8 B\u1ec0N K\u00c9O<\/strong>.<\/p>\n\n\n\n N\u1ebfu h\u1eb1ng s\u1ed1 c\u01a1 s\u1edf c\u1ee7a b\u1ea1n gi\u1ea3 \u0111\u1ecbnh 60.000 PSI v\u00e0 b\u1ea1n v\u1eadn h\u00e0nh \u1edf 90.000 PSI, h\u1ec7 s\u1ed1 nh\u00e2n c\u1ee7a b\u1ea1n l\u00e0:<\/p>\n\n\n\n 90.000 \u00f7 60.000 = 1.5<\/p>\n\n\n\n \u0110\u00f3 kh\u00f4ng ph\u1ea3i l\u00e0 sai s\u1ed1 l\u00e0m tr\u00f2n. \u0110\u00f3 l\u00e0 m\u1ed9t c\u00f4ng vi\u1ec7c 100 t\u1ea5n tr\u1edf th\u00e0nh 150 t\u1ea5n.<\/p>\n\n\n\n V\u00e0 th\u00e9p kh\u00f4ng g\u1ec9 c\u00f2n khi\u1ebfn t\u00ecnh hu\u1ed1ng t\u1ed3i t\u1ec7 h\u01a1n. Gi\u1edbi h\u1ea1n ch\u1ea3y c\u1ee7a n\u00f3 th\u01b0\u1eddng g\u1ea7n v\u1edbi gi\u1edbi h\u1ea1n k\u00e9o h\u01a1n so v\u1edbi th\u00e9p m\u1ec1m, v\u00e0 n\u00f3 h\u00f3a b\u1ec1n nhanh h\u01a1n. \u0110i\u1ec1u \u0111\u00f3 c\u00f3 ngh\u0129a l\u00e0 khi qu\u00e1 tr\u00ecnh u\u1ed1n ti\u1ebfp di\u1ec5n, l\u1ef1c c\u1ea3n t\u0103ng l\u00ean. M\u00e1y u\u1ed1n c\u1ee7a b\u1ea1n c\u1ea3m nh\u1eadn \u0111i\u1ec1u \u0111\u00f3 nh\u01b0 m\u1ed9t \u0111\u1ec9nh t\u1ea3i g\u1ea7n cu\u1ed1i h\u00e0nh tr\u00ecnh.<\/p>\n\n\n\n T\u00f4i t\u1eebng ch\u1ee9ng ki\u1ebfn m\u1ed9t b\u1ed9 khu\u00f4n ph\u00e2n \u0111o\u1ea1n ho\u00e0n to\u00e0n m\u1edbi b\u1ecb m\u1ebb \u1edf vai khu\u00f4n ch\u1ec9 v\u00ec ai \u0111\u00f3 tin v\u00e0o b\u1ea3ng tra th\u00e9p m\u1ec1m cho m\u1ed9t c\u00f4ng vi\u1ec7c g\u1ea5p v\u1edbi th\u00e9p kh\u00f4ng g\u1ec9. M\u00e1y v\u1eabn n\u1eb1m trong gi\u1edbi h\u1ea1n t\u1ea3i. D\u1ee5ng c\u1ee5 th\u00ec kh\u00f4ng. Ch\u00fang t\u00f4i kh\u00f4ng lo\u1ea1i b\u1ecf chi ti\u1ebft \u0111\u00f3. Ch\u00fang t\u00f4i lo\u1ea1i b\u1ecf khu\u00f4n.<\/p>\n\n\n\n Th\u00e9p kh\u00f4ng g\u1ec9 kh\u00f4ng \u201cn\u1eb7ng h\u01a1n.\u201d N\u00f3 c\u00f3 \u0111\u1ed9 b\u1ec1n k\u00e9o cao h\u01a1n. C\u00f4ng th\u1ee9c \u0111\u00e3 cho b\u1ea1n bi\u1ebft ph\u1ea3i l\u00e0m g\u00ec \u2014 nh\u00e2n v\u1edbi t\u1ef7 l\u1ec7 gi\u1eefa \u0110\u1ed8 B\u1ec0N K\u00c9O<\/strong> th\u1ef1c t\u1ebf v\u00e0 gi\u00e1 tr\u1ecb c\u01a1 s\u1edf.<\/p>\n\n\n\n N\u1ebfu b\u1ea1n kh\u00f4ng \u0111i\u1ec1u ch\u1ec9nh con s\u1ed1 \u0111\u00f3, b\u1ea1n kh\u00f4ng \u0111ang t\u00ednh to\u00e1n. B\u1ea1n \u0111ang \u0111\u00e1nh c\u01b0\u1ee3c.<\/p>\n\n\n\n B\u00e2y gi\u1edd h\u00e3y n\u00f3i v\u1ec1 \u0111\u00f2n b\u1ea9y.<\/p>\n\n\n\n Quy t\u1eafc ph\u1ed5 bi\u1ebfn l\u00e0 t\u1ef7 l\u1ec7 8:1 \u2014 KHE M\u1ede V-DIE \u2248 8 \u00d7 \u0110\u1ed8 D\u00c0Y<\/strong> cho u\u1ed1n air-bending th\u00e9p m\u1ec1m. T\u1ef7 l\u1ec7 \u0111\u00f3 \u0111\u01b0\u1ee3c t\u00edch h\u1ee3p trong h\u1ea7u h\u1ebft c\u00e1c b\u1ea3ng l\u1ef1c. N\u00f3 an to\u00e0n. D\u1ec5 d\u1ef1 \u0111o\u00e1n.<\/p>\n\n\n\n Nh\u01b0ng 575 kh\u00f4ng ph\u1ea3i l\u00e0 m\u1ed9t \u0111\u1ecbnh lu\u1eadt v\u1eadt l\u00fd.<\/p>\n\n\n\n H\u00e3y nh\u00ecn l\u1ea1i v\u00ed d\u1ee5 v\u1edbi t\u1ea5m d\u00e0y m\u1ed9t ph\u1ea7n t\u01b0 inch. Khu\u00f4n 3 inch so v\u1edbi khu\u00f4n 1.5 inch. C\u1eaft \u0110\u1ed8 M\u1ede KHU\u00d4N<\/strong> m\u1ed9t n\u1eeda v\u00e0, v\u00ec n\u00f3 n\u1eb1m \u1edf m\u1eabu s\u1ed1 c\u1ee7a ph\u01b0\u01a1ng tr\u00ecnh, l\u1ef1c y\u00eau c\u1ea7u s\u1ebd t\u0103ng g\u1ea5p \u0111\u00f4i.<\/p>\n\n\n\n Kh\u00f4ng ch\u1ec9 t\u0103ng l\u00ean. M\u00e0 l\u00e0 g\u1ea5p \u0111\u00f4i.<\/p>\n\n\n\n \u0110\u00f3 l\u00e0 c\u01a1 h\u1ecdc thu\u1ea7n t\u00fay. Khu\u00f4n h\u1eb9p h\u01a1n s\u1ebd gi\u1ea3m kho\u1ea3ng c\u00e1ch m\u00e0 v\u1eadt li\u1ec7u ph\u1ea3i b\u1eafc c\u1ea7u, khi\u1ebfn m\u00f4 men u\u1ed1n c\u1ea7n thi\u1ebft \u0111\u1ec3 \u00e9p bi\u1ebfn d\u1ea1ng d\u1ebbo t\u0103ng l\u00ean. B\u1ea1n \u0111\u00e3 r\u00fat ng\u1eafn c\u00e1nh tay \u0111\u00f2n. M\u00e1y \u00e9p b\u00f9 l\u1ea1i b\u1eb1ng l\u1ef1c.<\/p>\n\n\n\n \u0110\u00e2y l\u00e0 c\u00e1i b\u1eaby: ng\u01b0\u1eddi v\u1eadn h\u00e0nh si\u1ebft ch\u1eb7t khu\u00f4n \u0111\u1ec3 \u201cl\u00e0m s\u1ea1ch\u201d b\u00e1n k\u00ednh b\u00ean trong ho\u1eb7c ki\u1ec3m so\u00e1t \u0111\u1ed9 \u0111\u00e0n h\u1ed3i ng\u01b0\u1ee3c. B\u1ea3n v\u1ebd th\u00ec kh\u00f4ng thay \u0111\u1ed5i. \u0110\u1ed8 D\u00c0Y<\/strong> kh\u00f4ng thay \u0111\u1ed5i. Nh\u01b0ng l\u1ef1c \u00e9p t\u0103ng nhanh v\u00ec h\u00ecnh d\u1ea1ng \u0111\u00e3 thay \u0111\u1ed5i.<\/p>\n\n\n\n T\u00f4i \u0111\u00e3 t\u1eebng th\u1ea5y m\u1ed9t c\u00f4ng vi\u1ec7c \u0111\u1ecbnh m\u1ee9c 90 t\u1ea5n tr\u1edf th\u00e0nh th\u1ef1c t\u1ebf 130 t\u1ea5n ch\u1ec9 v\u00ec ai \u0111\u00f3 thay khu\u00f4n ch\u1eb7t h\u01a1n \u0111\u1ec3 \u201cl\u00e0m s\u1eafc b\u00e1n k\u00ednh.\u201d Kh\u00f4ng c\u00f2i b\u00e1o. Kh\u00f4ng k\u1ecbch t\u00ednh. Ch\u1ec9 l\u00e0 b\u1ed9 khu\u00f4n d\u1ea7n b\u1ecb bi\u1ebfn d\u1ea1ng d\u01b0\u1edbi \u00e1p l\u1ef1c m\u00e0 n\u00f3 ch\u01b0a t\u1eebng \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf ch\u1ecbu \u0111\u1ef1ng.<\/p>\n\n\n\n V\u00e0 h\u00e3y nh\u1edb \u2014 c\u00e1c danh m\u1ee5c d\u1ee5ng c\u1ee5 li\u1ec7t k\u00ea t\u1ea3i tr\u1ecdng t\u1ed1i \u0111a theo t\u1ea5n tr\u00ean m\u1ed7i foot. \u0110\u00f4i khi l\u00e0 t\u1ea5n ng\u1eafn. \u0110\u00f4i khi l\u00e0 t\u1ea5n m\u00e9t. M\u1ed9t lo\u1ea1i l\u00e0 2.000 pound. Lo\u1ea1i kia th\u00ec kh\u00f4ng. N\u1ebfu b\u1ea1n nh\u1ea7m l\u1eabn ch\u00fang, bi\u00ean \u0111\u1ed9 an to\u00e0n c\u1ee7a b\u1ea1n s\u1ebd bi\u1ebfn m\u1ea5t.<\/p>\n\n\n\n Thu nh\u1ecf KHO\u1ea2NG M\u1ede V\u2011KHU\u00d4N<\/strong> l\u00e0 c\u00e1ch nhanh nh\u1ea5t \u0111\u1ec3 qu\u00e1 t\u1ea3i m\u00e1y \u00e9p m\u00e0 kh\u00f4ng c\u1ea7n thay \u0111\u1ed5i \u0111\u1ed9 d\u00e0y v\u1eadt li\u1ec7u.<\/p>\n\n\n\n B\u00e2y gi\u1edd ch\u00fang ta \u0111\u1ebfn ph\u1ea7n khi\u1ebfn nhi\u1ec1u ng\u01b0\u1eddi b\u1ecb b\u1ea5t ng\u1edd.<\/p>\n\n\n\n L\u1ea5y c\u00f9ng t\u1ea5m kim lo\u1ea1i \u0111\u00f3. C\u00f9ng \u0110\u1ed8 D\u00c0Y<\/strong>. C\u00f9ng \u0110\u1ed8 B\u1ec0N K\u00c9O<\/strong>. C\u00f9ng \u0110\u1ed8 M\u1ede KHU\u00d4N<\/strong>.<\/p>\n\n\n\n U\u1ed1n b\u1eb1ng kh\u00f4ng kh\u00ed, v\u00e0 v\u1eadt li\u1ec7u ch\u1ec9 ti\u1ebfp x\u00fac v\u1edbi \u0111\u1ea7u ch\u00e0y v\u00e0 vai khu\u00f4n. Ba \u0111i\u1ec3m. Di\u1ec7n t\u00edch ti\u1ebfp x\u00fac h\u1ea1n ch\u1ebf. L\u1ef1c \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t.<\/p>\n\n\n\n B\u00e2y gi\u1edd \u00e9p s\u00e1t \u0111\u00e1y. B\u1ea1n \u00e9p v\u1eadt li\u1ec7u ti\u1ebfp x\u00fac ho\u00e0n to\u00e0n v\u1edbi th\u00e0nh khu\u00f4n. Di\u1ec7n t\u00edch ti\u1ebfp x\u00fac t\u0103ng. Ma s\u00e1t t\u0103ng. L\u1ef1c c\u1ea7n thi\u1ebft t\u0103ng m\u1ea1nh \u2014 th\u01b0\u1eddng g\u1ea5p 3 \u0111\u1ebfn 4 l\u1ea7n l\u1ef1c u\u1ed1n b\u1eb1ng kh\u00f4ng kh\u00ed.<\/p>\n\n\n\n D\u1eadp c\u1ee9ng? B\u1ea1n kh\u00f4ng ch\u1ec9 u\u1ed1n n\u1eefa. B\u1ea1n \u0111ang n\u00e9n v\u1eadt li\u1ec7u t\u1ea1i \u0111\u01b0\u1eddng u\u1ed1n \u0111\u1ec3 lo\u1ea1i b\u1ecf \u0111\u1ed9 \u0111\u00e0n h\u1ed3i ng\u01b0\u1ee3c. \u0110i\u1ec1u \u0111\u00f3 c\u00f3 th\u1ec3 \u0111\u1ea9y l\u1ef1c l\u00ean g\u1ea5p 5 \u0111\u1ebfn 8 l\u1ea7n y\u00eau c\u1ea7u c\u1ee7a u\u1ed1n b\u1eb1ng kh\u00f4ng kh\u00ed.<\/p>\n\n\n\n C\u00f9ng b\u1ea3n v\u1ebd. Nh\u01b0ng t\u00ecnh hu\u1ed1ng t\u1ea3i ho\u00e0n to\u00e0n kh\u00e1c nhau.<\/p>\n\n\n\n T\u00f4i t\u1eebng th\u1ea5y m\u1ed9t \u0111\u1ed9i chuy\u1ec3n t\u1eeb u\u1ed1n b\u1eb1ng kh\u00f4ng kh\u00ed sang \u00e9p s\u00e1t \u0111\u00e1y ngay gi\u1eefa qu\u00e1 tr\u00ecnh \u0111\u1ec3 c\u1ed1 duy tr\u00ec \u0111\u1ed9 ch\u00ednh x\u00e1c g\u00f3c. H\u1ecd kh\u00f4ng t\u00ednh l\u1ea1i l\u1ef1c \u00e9p. M\u00e1y kh\u00f4ng n\u1ed5. N\u00f3 ch\u1ec9 b\u1eaft \u0111\u1ea7u l\u1ec7ch d\u1ea7n ra kh\u1ecfi song song d\u01b0\u1edbi t\u1ea3i, s\u1ef1 bi\u1ebfn d\u1ea1ng khung tinh vi m\u00e0 ch\u00fang t\u00f4i ph\u1ea3i truy t\u00ecm h\u00e0ng tu\u1ea7n tr\u01b0\u1edbc khi ph\u00e1t hi\u1ec7n nguy\u00ean nh\u00e2n l\u00e0 do ph\u01b0\u01a1ng ph\u00e1p ch\u1ee9 kh\u00f4ng ph\u1ea3i h\u1ec7 th\u1ee7y l\u1ef1c.<\/p>\n\n\n\n U\u1ed1n b\u1eb1ng kh\u00f4ng kh\u00ed l\u00e0 bi\u1ebfn d\u1ea1ng \u0111\u00e0n h\u1ed3i\u2011d\u1ebbo v\u1edbi ti\u1ebfp x\u00fac khu\u00f4n t\u1ed1i thi\u1ec3u. \u00c9p s\u00e1t \u0111\u00e1y v\u00e0 d\u1eadp c\u1ee9ng th\u00eam v\u00e0o qu\u00e1 tr\u00ecnh t\u1ea1o h\u00ecnh n\u00e9n v\u00e0 ti\u1ebfp x\u00fac to\u00e0n ph\u1ea7n v\u1edbi khu\u00f4n. Nhi\u1ec1u l\u1ef1c c\u1ea3n h\u01a1n. Nhi\u1ec1u l\u1ef1c h\u01a1n.<\/p>\n\n\n\n N\u1ebfu b\u1ea1n t\u00ednh to\u00e1n l\u1ef1c \u00e9p m\u00e0 kh\u00f4ng ch\u1ec9 r\u00f5 PH\u01af\u01a0NG PH\u00c1P U\u1ed0N<\/strong>, b\u1ea1n v\u1eabn ch\u01b0a ho\u00e0n th\u00e0nh ph\u01b0\u01a1ng tr\u00ecnh.<\/p>\n\n\n\n V\u00e0 n\u1ebfu b\u1ea1n v\u1eabn ch\u01b0a ho\u00e0n th\u00e0nh ph\u01b0\u01a1ng tr\u00ecnh, b\u1ea1n ch\u01b0a c\u00f3 quy\u1ec1n tin v\u00e0o con s\u1ed1 \u0111\u00f3.<\/p>\n\n\n\n B\u1ea1n \u0111\u00e3 th\u1ea5y c\u00e1ch \u0110\u1ed8 B\u1ec0N K\u00c9O<\/strong>, KHOANG M\u1ede V\u2011DIE<\/strong>, v\u00e0 PH\u01af\u01a0NG PH\u00c1P U\u1ed0N<\/strong> c\u00f3 th\u1ec3 vung l\u1ef1c nh\u01b0 m\u1ed9t c\u00e2y b\u00faa t\u1ea1.<\/p>\n\n\n\n Gi\u1edd b\u1ea1n mu\u1ed1n ph\u00e9p t\u00ednh th\u1ef1c t\u1ebf. Kh\u00f4ng ph\u1ea3i m\u1ed9t bi\u1ec3u \u0111\u1ed3. Kh\u00f4ng ph\u1ea3i \u201cg\u1ea7n \u0111\u00fang l\u00e0 \u0111\u01b0\u1ee3c\u201d. M\u1ed9t con s\u1ed1 t\u1eebng b\u01b0\u1edbc m\u00e0 b\u1ea1n c\u00f3 th\u1ec3 b\u1ea3o v\u1ec7 khi s\u1ee9c \u00e9p th\u1ef1c s\u1ef1 gi\u00e1ng xu\u1ed1ng.<\/p>\n\n\n\n T\u1ed1t. \u0110\u00f3 l\u00e0 c\u00e1ch b\u1ea1n ng\u1eebng l\u00e0m g\u00e3y s\u1eaft.<\/p>\n\n\n\n H\u1eb1ng s\u1ed1 ti\u00eau chu\u1ea9n m\u00e0 ai c\u0169ng d\u00f9ng \u0111\u01b0\u1ee3c suy ra cho vi\u1ec7c u\u1ed1n kh\u00f4ng kh\u00ed th\u00e9p d\u1ebbo 60.000 PSI v\u1edbi t\u1ef7 l\u1ec7 khu\u00f4n truy\u1ec1n th\u1ed1ng. N\u00f3 l\u00e0 m\u1ed9t vi\u00ean \u0111\u1ea1n c\u01a1 b\u1ea3n trong kh\u1ea9u s\u00fang \u0111\u00e3 n\u1ea1p. Thay \u0111\u1ea1n, \u0111\u1ed9 gi\u1eadt thay \u0111\u1ed5i. Vi\u1ec7c ch\u00fang ta s\u1ebd l\u00e0m b\u00e2y gi\u1edd l\u00e0 x\u00e2y d\u1ef1ng m\u1ed9t c\u00f4ng th\u1ee9c khi\u1ebfn nh\u1eefng vi\u00ean \u0111\u1ea1n \u0111\u00f3 tr\u1edf n\u00ean r\u00f5 r\u00e0ng \u2014 \u0111\u1ec3 b\u1ea1n bi\u1ebft ch\u00ednh x\u00e1c c\u00f3 g\u00ec trong bu\u1ed3ng \u0111\u1ea1n tr\u01b0\u1edbc khi b\u00f3p c\u00f2.<\/p>\n\n\n\n V\u00e0 \u0111\u00fang v\u1eady, ch\u00fang ta s\u1ebd t\u00ednh \u0111\u1ebfn \u0110\u1ed8 B\u1ec0N K\u00c9O<\/strong>, th\u1ef1c t\u1ebf KHOANG M\u1ede V\u2011DIE<\/strong>, v\u00e0 PH\u01af\u01a0NG PH\u00c1P U\u1ed0N<\/strong> m\u1ed9t c\u00e1ch r\u00f5 r\u00e0ng \u2014 kh\u00f4ng ph\u1ea3i l\u00e0 nh\u1eefng gi\u1ea3 \u0111\u1ecbnh \u1ea9n trong m\u1ed9t con s\u1ed1 ma thu\u1eadt.<\/p>\n\n\n\n H\u00e3y b\u1eaft \u0111\u1ea7u v\u1edbi m\u1ed9t v\u00ed d\u1ee5 c\u1ee5 th\u1ec3.<\/p>\n\n\n\n L\u1ea5y t\u1ea5m d\u00e0y m\u1ed9t ph\u1ea7n t\u01b0 inch. D\u00e0y 0,250 inch. Chi\u1ec1u d\u00e0i u\u1ed1n 10 foot. Khu\u00f4n ch\u1eef V hai inch. U\u1ed1n b\u1eb1ng kh\u00f4ng kh\u00ed.<\/p>\n\n\n\n C\u00f4ng th\u1ee9c t\u00ednh l\u1ef1c u\u1ed1n b\u1eb1ng kh\u00f4ng kh\u00ed theo h\u1ec7 \u0111o l\u01b0\u1eddng Anh l\u00e0:<\/p>\n\n\n\n T\u1ea4N TR\u00caN M\u1ed8T FOOT<\/strong> = (\u0110\u1ed8 B\u1ec0N K\u00c9O<\/strong> \u00d7 \u0110\u1ed8 D\u00c0Y\u00b2<\/strong>) \u00f7 (1,33 \u00d7 KHOANG M\u1ede V\u2011DIE<\/strong>)<\/p>\n\n\n\n Con s\u1ed1 1,33 \u0111\u00f3 kh\u00f4ng ph\u1ea3i \u0111i\u1ec1u huy\u1ec1n b\u00ed. N\u00f3 xu\u1ea5t ph\u00e1t t\u1eeb c\u01a1 h\u1ecdc u\u1ed1n d\u1ea7m v\u00e0 chuy\u1ec3n \u0111\u1ed5i \u0111\u01a1n v\u1ecb, \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng xung quanh n\u1ec1n th\u00e9p 60.000 PSI. \u0110\u00f3 l\u00e0 vi\u1ec7c thu g\u1ecdn h\u00ecnh h\u1ecdc v\u00e0 ph\u00e2n b\u1ed1 \u1ee9ng su\u1ea5t th\u00e0nh m\u1ed9t h\u1eb1ng s\u1ed1.<\/p>\n\n\n\n C\u1eafm c\u00e1c con s\u1ed1 cho th\u00e9p m\u1ec1m 60.000 PSI:<\/p>\n\n\n\n V\u1eady n\u00ean:<\/p>\n\n\n\n T\u1ea4N TR\u00caN M\u1ed8T FOOT<\/strong> = (60.000 \u00d7 0,250\u00b2) \u00f7 (1,33 \u00d7 2,0) = (60.000 \u00d7 0,0625) \u00f7 2,66 = 3.750 \u00f7 2,66 \u2248 1.409 pound tr\u00ean m\u1ed7i inch \u2248 16,9 t\u1ea5n tr\u00ean m\u1ed7i foot<\/p>\n\n\n\n D\u00e0i m\u01b0\u1eddi foot? Nh\u00e2n l\u00ean:<\/p>\n\n\n\n 16,9 \u00d7 10 = t\u1ed5ng l\u1ef1c y\u00eau c\u1ea7u 169 t\u1ea5n.<\/p>\n\n\n\n \u0110\u00f3 l\u00e0 u\u1ed1n b\u1eb1ng kh\u00f4ng kh\u00ed. \u0110\u00f3 l\u00e0 60.000 PSI. \u0110\u00f3 l\u00e0 khu\u00f4n hai inch.<\/p>\n\n\n\n B\u00e2y gi\u1edd kh\u00f4ng thay \u0111\u1ed5i g\u00ec ngo\u00e0i KHOANG M\u1ede V\u2011DIE<\/strong> th\u00e0nh 1,5 inch.<\/p>\n\n\n\n M\u1eabu s\u1ed1 nh\u1ecf l\u1ea1i. L\u1ef1c t\u0103ng l\u00ean:<\/p>\n\n\n\n (60.000 \u00d7 0,0625) \u00f7 (1,33 \u00d7 1,5) = 3.750 \u00f7 1,995 \u2248 1.879 pound tr\u00ean m\u1ed7i inch \u2248 22,5 t\u1ea5n tr\u00ean m\u1ed7i foot<\/p>\n\n\n\n M\u01b0\u1eddi foot tr\u1edf th\u00e0nh 225 t\u1ea5n.<\/p>\n\n\n\n C\u00f9ng v\u1eadt li\u1ec7u. C\u00f9ng \u0111\u1ed9 d\u00e0y. C\u00f9ng chi\u1ec1u d\u00e0i. Thay khu\u00f4n n\u1eeda inch. Th\u00eam n\u0103m m\u01b0\u01a1i s\u00e1u t\u1ea5n t\u1ea3i tr\u00ean to\u00e0n b\u1ed9 m\u1eb7t b\u00e0n.<\/p>\n\n\n\n \u0110\u00f3 kh\u00f4ng ph\u1ea3i l\u00e0 l\u1ed7i c\u1ee7a b\u1ea3ng tra c\u1ee9u. \u0110\u00f3 l\u00e0 c\u01a1 h\u1ecdc \u0111\u00f2n b\u1ea9y \u2014 m\u00f4 men u\u1ed1n t\u0103ng khi nh\u1ecbp gi\u1ea3m.<\/p>\n\n\n\n T\u00f4i t\u1eebng ch\u1ee9ng ki\u1ebfn m\u1ed9t x\u01b0\u1edfng th\u1eed \u0111\u00fang thao t\u00e1c \u0111\u00f3 tr\u00ean m\u1ed9t m\u00e1y u\u1ed1n 175 t\u1ea5n. T\u00ednh to\u00e1n cho ra 225 t\u1ea5n. Bi\u1ec3n t\u00ean ghi 175. H\u1ecd v\u1eabn ch\u1ea1y cho m\u1ed9t \u0111o\u1ea1n ng\u1eafn g\u1ea7n gi\u1eefa. C\u1ea7n \u00e9p b\u1ecb cong v\u0129nh vi\u1ec5n. Kh\u00f4ng nghi\u00eam tr\u1ecdng, nh\u01b0ng \u0111\u1ee7 \u0111\u1ec3 m\u1ecdi \u0111\u01b0\u1eddng u\u1ed1n d\u00e0i sau \u0111\u00f3 b\u1ecb l\u1ec7ch g\u00f3c t\u1eeb \u0111\u1ea7u n\u00e0y sang \u0111\u1ea7u kia. Ch\u00fang t\u00f4i kh\u00f4ng bao gi\u1edd kh\u00f4i ph\u1ee5c l\u1ea1i \u0111\u01b0\u1ee3c m\u00e1y \u0111\u00f3 nh\u01b0 tr\u01b0\u1edbc.<\/p>\n\n\n\n V\u00e0 ch\u00fang ta c\u00f2n ch\u01b0a ch\u1ea1m \u0111\u1ebfn inox hay ph\u01b0\u01a1ng ph\u00e1p \u00e9p \u0111\u00e1y.<\/p>\n\n\n\n H\u00e3y ch\u00fa \u00fd \u0111i\u1ec1u kh\u00e1c: c\u00f4ng th\u1ee9c n\u00e0y cho ra l\u1ef1c y\u00eau c\u1ea7u. N\u00f3 kh\u00f4ng cho bi\u1ebft li\u1ec7u m\u00e1y 175 t\u1ea5n \u00d7 10 foot c\u1ee7a b\u1ea1n c\u00f3 th\u1ec3 an to\u00e0n cung c\u1ea5p 169 t\u1ea5n tr\u00ean to\u00e0n b\u1ed9 chi\u1ec1u d\u00e0i 10 foot hay ch\u1ec9 g\u1ea7n trung t\u00e2m. \u0110\u00e1nh gi\u00e1 m\u00e1y v\u00e0 y\u00eau c\u1ea7u l\u1ef1c l\u00e0 hai v\u1ea5n \u0111\u1ec1 kh\u00e1c nhau. Tr\u01b0\u1edbc khi tin v\u00e0o con s\u1ed1, b\u1ea1n c\u1ea7n bi\u1ebft c\u00e1ch m\u00e1y u\u1ed1n c\u1ee7a b\u1ea1n ph\u00e2n ph\u1ed1i t\u1ea3i, h\u1ec7 th\u1ed1ng b\u00f9 cong CNC c\u1ee7a n\u00f3 b\u00f9 tr\u1eeb \u1ee9ng su\u1ea5t ra sao, v\u00e0 li\u1ec7u k\u1ebft c\u1ea5u c\u1ee7a n\u00f3 c\u00f3 \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 u\u1ed1n \u0111\u1ed3ng \u0111\u1ec1u to\u00e0n chi\u1ec1u d\u00e0i hay kh\u00f4ng. C\u00e1c n\u1ec1n t\u1ea3ng CNC hi\u1ec7n \u0111\u1ea1i nh\u01b0 m\u00e1y ch\u1ea5n CN-HAWE<\/a> \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf cho kh\u1ea3 n\u0103ng u\u1ed1n ch\u00ednh x\u00e1c cao v\u00e0 ki\u1ec3m so\u00e1t t\u1ea3i th\u1ef1c t\u1ebf, \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3 b\u1edfi R&D v\u00e0 th\u1eed nghi\u1ec7m li\u00ean t\u1ee5c tr\u00ean h\u1ec7 th\u1ed1ng m\u00e1y u\u1ed1n v\u00e0 t\u1ef1 \u0111\u1ed9ng h\u00f3a \u2014 nh\u1edd \u0111\u00f3 l\u01b0\u1ee3ng t\u1ea5n t\u00ednh to\u00e1n c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u0111\u00e1p \u1ee9ng b\u1eb1ng hi\u1ec7u su\u1ea5t m\u00e1y \u1ed5n \u0111\u1ecbnh, l\u1eb7p l\u1ea1i.<\/p>\n\n\n\n Tr\u01b0\u1edbc ti\u00ean h\u00e3y t\u00ednh l\u1ef1c y\u00eau c\u1ea7u. Sau \u0111\u00f3 so s\u00e1nh v\u1edbi gi\u1edbi h\u1ea1n ph\u00e2n b\u1ed1 th\u1ef1c t\u1ebf c\u1ee7a m\u00e1y.<\/p>\n\n\n\n B\u00e2y gi\u1edd h\u00e3y n\u00f3i v\u1ec1 c\u00e1ch con ng\u01b0\u1eddi t\u1ef1 d\u1ed1i m\u00ecnh m\u1ed9t c\u00e1ch \u00e2m th\u1ea7m.<\/p>\n\n\n\n Trong h\u1ec7 m\u00e9t, c\u00f9ng m\u1ed1i quan h\u1ec7 u\u1ed1n b\u1eb1ng kh\u00f4ng kh\u00ed tr\u00f4ng nh\u01b0 sau:<\/p>\n\n\n\n kN tr\u00ean m\u1ed7i m\u00e9t<\/strong> = (1.42 \u00d7 \u0110\u1ed8 B\u1ec0N K\u00c9O (MPa)<\/strong> \u00d7 B\u1ec0 D\u00c0Y\u00b2 (mm)<\/strong>) \u00f7 KHE CH\u1ebeT V (mm)<\/strong><\/p>\n\n\n\n Gi\u00e1 tr\u1ecb 1.42 thay th\u1ebf cho h\u1ec7 \u0111o l\u01b0\u1eddng Imperial 1.33 v\u00ec vi\u1ec7c chuy\u1ec3n \u0111\u1ed5i \u0111\u01a1n v\u1ecb \u0111\u00e3 \u0111\u01b0\u1ee3c t\u00edch h\u1ee3p s\u1eb5n. Bao g\u00f3i kh\u00e1c nhau, nh\u01b0ng v\u1eadt l\u00fd th\u00ec gi\u1ed1ng nhau.<\/p>\n\n\n\n \u0110\u00e2y l\u00e0 n\u01a1i c\u00e1c x\u01b0\u1edfng d\u1ec5 g\u1eb7p r\u1eafc r\u1ed1i: ai \u0111\u00f3 tr\u1ed9n MPa v\u1edbi inch. Ho\u1eb7c mm v\u1edbi PSI. Ho\u1eb7c chuy\u1ec3n \u0111\u1ed5i t\u1ea5n sang t\u1ea5n m\u00e9t m\u00e0 kh\u00f4ng ki\u1ec3m tra xem \u0111\u1ecbnh m\u1ee9c c\u1ee7a d\u1ee5ng c\u1ee5 l\u00e0 t\u1ea5n ng\u1eafn (2.000 lb) hay t\u1ea5n m\u00e9t (2.204 lb).<\/p>\n\n\n\n Hai ngh\u00ecn so v\u1edbi 2.204 nghe c\u00f3 v\u1ebb kh\u00f4ng nhi\u1ec1u. Nh\u01b0ng \u0111\u00f3 l\u00e0 10 ph\u1ea7n tr\u0103m. V\u1edbi t\u1ea3i 200 t\u1ea5n, \u0111\u00f3 l\u00e0 20 t\u1ea5n l\u1ed7i \u201c\u00f4i kh\u1ed5\u201d.\u201d<\/p>\n\n\n\n T\u00f4i \u0111\u00e3 th\u1ea5y m\u1ed9t khu\u00f4n \u0111\u01b0\u1ee3c \u0111\u00f3ng d\u1ea5u cho 150 t\u1ea5n m\u00e9t tr\u00ean m\u1ed7i m\u00e9t l\u1ea1i b\u1ecb xem l\u00e0 150 t\u1ea5n ng\u1eafn tr\u00ean m\u1ed7i foot. \u0110\u00f3 kh\u00f4ng ph\u1ea3i l\u00e0 l\u1ed7i l\u00e0m tr\u00f2n. \u0110\u00f3 l\u00e0 v\u01b0\u1ee3t xa kh\u1ea3 n\u0103ng c\u1ee7a d\u1ee5ng c\u1ee5. Vai khu\u00f4n n\u1ee9t ngay \u1edf c\u00fa \u0111\u00e1nh th\u1ee9 ba.<\/p>\n\n\n\n \u0110\u01a1n v\u1ecb \u0111o kh\u00f4ng ph\u1ea3i l\u00e0 vi\u1ec7c ghi ch\u00e9p s\u1ed5 s\u00e1ch. Khi d\u00f9ng sai, ch\u00fang tr\u1edf th\u00e0nh nh\u1eefng h\u1ec7 s\u1ed1 nh\u00e2n l\u1ef1c c\u1ef1c l\u1edbn.<\/p>\n\n\n\n V\u00ec v\u1eady \u0111\u00e2y l\u00e0 quy t\u1eafc: ch\u1ecdn m\u1ed9t h\u1ec7 \u0111\u01a1n v\u1ecb v\u00e0 d\u00f9ng nh\u1ea5t qu\u00e1n t\u1eeb \u0110\u1ed8 B\u1ec0N K\u00c9O<\/strong> \u0111\u1ebfn t\u1ed5ng t\u1ea3i tr\u1ecdng cu\u1ed1i c\u00f9ng. Ch\u1ec9 chuy\u1ec3n \u0111\u1ed5i m\u1ed9t l\u1ea7n, \u1edf cu\u1ed1i, n\u1ebfu th\u1ef1c s\u1ef1 c\u1ea7n thi\u1ebft.<\/p>\n\n\n\n Gi\u1edd ch\u00fang ta n\u1ea1p m\u1ed9t h\u1ed9p m\u1ef1c kh\u00e1c.<\/p>\n\n\n\n Gi\u1ea3 s\u1eed t\u1ea5m kim lo\u1ea1i d\u00e0y m\u1ed9t ph\u1ea7n t\u01b0 inch c\u1ee7a b\u1ea1n kh\u00f4ng ph\u1ea3i th\u00e9p m\u1ec1m 60.000 PSI. M\u00e0 l\u00e0 th\u00e9p kh\u00f4ng g\u1ec9 90.000 PSI.<\/p>\n\n\n\n C\u00e1ch \u0111i\u1ec1u ch\u1ec9nh ch\u00ednh x\u00e1c l\u00e0:<\/p>\n\n\n\n H\u1ec6 S\u1ed0 HI\u1ec6U CH\u1ec8NH V\u1eacT LI\u1ec6U (MCF)<\/strong> = \u0110\u1ed8 B\u1ec0N K\u00c9O TH\u1ef0C T\u1ebe<\/strong> \u00f7 60.000<\/p>\n\n\n\n V\u1eady n\u00ean:<\/p>\n\n\n\n MCF<\/strong> = 90.000 \u00f7 60.000 = 1,5<\/p>\n\n\n\n B\u1ea1n kh\u00f4ng \u201cc\u1ed9ng th\u00eam m\u1ed9t ch\u00fat.\u201d B\u1ea1n nh\u00e2n to\u00e0n b\u1ed9 k\u1ebft qu\u1ea3 u\u1ed1n b\u1eb1ng kh\u00f4ng kh\u00ed v\u1edbi 1,5.<\/p>\n\n\n\n L\u1ea5y v\u00ed d\u1ee5 tr\u01b0\u1edbc \u0111\u00f3 c\u1ee7a ch\u00fang ta l\u00e0 22,5 t\u1ea5n tr\u00ean m\u1ed7i foot tr\u00ean khu\u00f4n 1,5 inch:<\/p>\n\n\n\n 22,5 \u00d7 1,5 = 33,75 t\u1ea5n tr\u00ean m\u1ed7i foot.<\/p>\n\n\n\n M\u01b0\u1eddi foot?<\/p>\n\n\n\n Y\u00eau c\u1ea7u 337,5 t\u1ea5n.<\/p>\n\n\n\n \u0110\u00f3 l\u00e0 c\u00e1ch m\u1ed9t thi\u1ebft l\u1eadp tr\u00f4ng nh\u01b0 169 t\u1ea5n trong th\u00e9p m\u1ec1m l\u1ea1i \u00e2m th\u1ea7m tr\u1edf th\u00e0nh h\u01a1n 300 t\u1ea5n trong th\u00e9p kh\u00f4ng g\u1ec9 v\u1edbi khu\u00f4n ch\u1eb7t h\u01a1n.<\/p>\n\n\n\n B\u00e2y gi\u1edd th\u00eam ph\u01b0\u01a1ng ph\u00e1p x\u1ebfp l\u1edbp v\u00e0o tr\u00ean c\u00f9ng.<\/p>\n\n\n\n H\u1ec7 s\u1ed1 nh\u00e2n u\u1ed1n b\u1eb1ng kh\u00f4ng kh\u00ed = 1,0 U\u1ed1n ch\u1ea1m \u0111\u00e1y c\u00f3 th\u1ec3 g\u1ea5p 4\u20135\u00d7 u\u1ed1n b\u1eb1ng kh\u00f4ng kh\u00ed. U\u1ed1n ti\u1ec1n c\u00f3 th\u1ec3 \u0111\u1ea1t t\u1edbi 8\u201310\u00d7.<\/p>\n\n\n\n N\u1ebfu b\u1ea1n u\u1ed1n ch\u1ea1m \u0111\u00e1y c\u00f4ng vi\u1ec7c b\u1eb1ng th\u00e9p kh\u00f4ng g\u1ec9 \u0111\u00f3 v\u1edbi h\u1ec7 s\u1ed1 th\u1eadm ch\u00ed l\u00e0 4\u00d7:<\/p>\n\n\n\n 337,5 \u00d7 4 = 1.350 t\u1ea5n.<\/p>\n\n\n\n C\u00f9ng b\u1ea3n v\u1ebd. C\u00f9ng \u0111\u1ed9 d\u00e0y. C\u00f9ng chi\u1ec1u d\u00e0i.<\/p>\n\n\n\n V\u1eadt l\u00fd kh\u00e1c nhau.<\/p>\n\n\n\n \u0110\u00e2y l\u00e0 ph\u1ea7n m\u00e0 h\u1ea7u h\u1ebft c\u00e1c c\u00f4ng th\u1ee9c che gi\u1ea5u: c\u00f4ng th\u1ee9c \u0111\u00f3 MCF<\/strong> gi\u1ea3 \u0111\u1ecbnh t\u1ef7 l\u1ec7 tuy\u1ebfn t\u00ednh v\u1edbi \u0111\u1ed9 b\u1ec1n k\u00e9o. \u0110\u1ed1i v\u1edbi h\u1ea7u h\u1ebft c\u00e1c lo\u1ea1i th\u00e9p k\u1ebft c\u1ea5u trong ph\u1ea1m vi m\u00e1y \u00e9p u\u1ed1n th\u00f4ng th\u01b0\u1eddng, \u0111i\u1ec1u \u0111\u00f3 kh\u00e1 ch\u00ednh x\u00e1c. Nh\u01b0ng c\u00e1c h\u1ee3p kim c\u01b0\u1eddng \u0111\u1ed9 cao c\u00f3 kh\u1ea3 n\u0103ng h\u00f3a b\u1ec1n m\u1ea1nh c\u00f3 th\u1ec3 t\u1ea1o ra \u0111\u1ec9nh t\u1ea3i g\u1ea7n cu\u1ed1i h\u00e0nh tr\u00ecnh. \u0110\u1ec9nh \u0111\u00f3 kh\u00f4ng n\u1eb1m trong h\u1eb1ng s\u1ed1 g\u1ed1c. \u0110\u00f3 l\u00e0 l\u00fd do t\u1ea1i sao ph\u00e1n \u0111o\u00e1n c\u1ee7a ng\u01b0\u1eddi v\u1eadn h\u00e0nh v\u00e0 vi\u1ec7c theo d\u00f5i t\u1ea3i theo th\u1eddi gian th\u1ef1c l\u1ea1i quan tr\u1ecdng.<\/p>\n\n\n\n T\u00f4i t\u1eebng ch\u1ee9ng ki\u1ebfn m\u1ed9t \u0111\u1ed9i \u201cch\u1ec9 th\u1eed m\u1ed9t l\u1ea7n\u201d tr\u00ean t\u1ea5m th\u00e9p c\u01b0\u1eddng \u0111\u1ed9 cao m\u00e0 kh\u00f4ng t\u00ednh to\u00e1n l\u1ea1i MCF<\/strong>. M\u00e1y \u00e9p \u0111\u1ea1t \u00e1p su\u1ea5t \u0111\u1ec9nh tr\u01b0\u1edbc khi \u0111\u1ea1t \u0111\u1ed9 s\u00e2u \u0111\u01b0\u1ee3c l\u1eadp tr\u00ecnh. Van x\u1ea3 k\u00eau r\u00edt. Khu\u00f4n th\u00ec v\u1eabn s\u1ed1ng s\u00f3t. C\u00e1c gio\u0103ng th\u1ee7y l\u1ef1c th\u00ec kh\u00f4ng.<\/p>\n\n\n\n M\u1ed9t c\u00f4ng th\u1ee9c th\u1ed1ng nh\u1ea5t kh\u00f4ng lo\u1ea1i b\u1ecf r\u1ee7i ro. N\u00f3 ph\u01a1i b\u00e0y r\u1ee7i ro \u0111\u00f3. N\u00f3 bu\u1ed9c b\u1ea1n ph\u1ea3i nh\u1eadn ra r\u1eb1ng:<\/p>\n\n\n\n L\u1ef1c c\u1ea7n thi\u1ebft = (L\u1ef1c u\u1ed1n b\u1eb1ng kh\u00f4ng kh\u00ed c\u01a1 b\u1ea3n t\u1eeb h\u00ecnh h\u1ecdc) \u00d7 MCF<\/strong> \u00d7 H\u1ec6 S\u1ed0 PH\u01af\u01a0NG PH\u00c1P<\/strong><\/p>\n\n\n\n Ch\u1ec9 sau \u0111\u00f3 b\u1ea1n m\u1edbi so s\u00e1nh v\u1edbi:<\/p>\n\n\n\n \u0110\u00f3 l\u00e0 ki\u1ec3m tra to\u00e0n bu\u1ed3ng tr\u01b0\u1edbc khi b\u1ea1n nh\u1ea5n c\u00f2.<\/p>\n\n\n\n Ti\u1ebfp theo, ch\u00fang ta s\u1ebd ch\u1ea1y ph\u00e9p t\u00ednh h\u1ee3p nh\u1ea5t n\u00e0y qua c\u00e1c t\u00ecnh hu\u1ed1ng th\u1ef1c t\u1ebf trong x\u01b0\u1edfng \u2014 v\u00e0 b\u1ea1n s\u1ebd th\u1ea5y nh\u1eefng thay \u0111\u1ed5i nh\u1ecf trong bi\u1ebfn s\u1ed1 t\u00edch l\u0169y th\u00e0nh t\u1ea3i tr\u1ecdng ph\u00e1 h\u1ee7y m\u00e1y nhanh h\u01a1n nh\u1eefng g\u00ec b\u1ea1n c\u1ea3m nh\u1eadn.<\/p>\n\n\n\n B\u1ea1n mu\u1ed1n bi\u1ebft nh\u1eefng thay \u0111\u1ed5i nh\u1ecf t\u00edch l\u0169y th\u00e0nh t\u1ea3i tr\u1ecdng ph\u00e1 h\u1ee7y m\u00e1y nhanh \u0111\u1ebfn m\u1ee9c n\u00e0o?<\/p>\n\n\n\n T\u1ed1t. \u0110\u00f3 l\u00e0 c\u00e2u h\u1ecfi \u0111\u00fang.<\/p>\n\n\n\n Ch\u00fang ta \u0111\u00e3 x\u00e2y d\u1ef1ng ph\u01b0\u01a1ng tr\u00ecnh h\u1ee3p nh\u1ea5t \u2014 l\u1ef1c u\u1ed1n kh\u00f4ng kh\u00ed c\u01a1 b\u1ea3n t\u1eeb h\u00ecnh h\u1ecdc, nh\u00e2n v\u1edbi H\u1ec6 S\u1ed0 HI\u1ec6U CH\u1ec8NH V\u1eacT LI\u1ec6U<\/strong>, nh\u00e2n v\u1edbi H\u1ec6 S\u1ed0 PH\u01af\u01a0NG PH\u00c1P<\/strong>. B\u00e2y gi\u1edd ch\u00fang ta s\u1ebd \u00e1p d\u1ee5ng n\u00f3 cho c\u00e1c c\u00f4ng vi\u1ec7c th\u1ef1c t\u1ebf \u2014 ki\u1ec3u c\u00f4ng vi\u1ec7c \u0111\u1ebfn b\u00e0n c\u1ee7a b\u1ea1n l\u00fac 2:30 chi\u1ec1u th\u1ee9 N\u0103m khi kh\u00e1ch h\u00e0ng n\u00f3i \u201cch\u1ec9 c\u1ea7n c\u00f3 tr\u01b0\u1edbc ng\u00e0y mai.\u201d<\/p>\n\n\n\n C\u00f9ng m\u1ed9t h\u00ecnh h\u1ecdc. H\u00e3y xem \u0111i\u1ec1u g\u00ec x\u1ea3y ra khi ta thay \u0111\u1ed5i t\u1eebng bi\u1ebfn m\u1ed9t.<\/p>\n\n\n\n H\u00ecnh dung m\u1ed9t gi\u00e1 \u0111\u1ee1 b\u1eb1ng th\u00e9p nh\u1eb9 10 gauge. \u0110\u1ed9 d\u00e0y l\u00e0 0.135 inch. Chi\u1ec1u d\u00e0i u\u1ed1n l\u00e0 48 inch. B\u1ea1n ch\u1ecdn khu\u00f4n 8\u00d7, v\u00ec v\u1eady KHOANG M\u1ede V\u2011DIE<\/strong> kho\u1ea3ng 1.08 inch. Ch\u00fang ta s\u1ebd g\u1ecdi l\u00e0 1.0 inch \u0111\u1ec3 ph\u00e9p t\u00ednh d\u1ec5 h\u01a1n v\u00e0 h\u01a1i b\u1ea3o th\u1ee7 m\u1ed9t ch\u00fat.<\/p>\n\n\n\n V\u1eadt li\u1ec7u l\u00e0 th\u00e9p nh\u1eb9 c\u01a1 b\u1ea3n: \u0110\u1ed8 B\u1ec0N K\u00c9O = 60.000 PSI<\/strong>.<\/p>\n\n\n\n U\u1ed1n kh\u00f4ng kh\u00ed. Kh\u00f4ng m\u1eb9o v\u1eb7t.<\/p>\n\n\n\n B\u1eaft \u0111\u1ea7u v\u1edbi c\u00f4ng th\u1ee9c:<\/p>\n\n\n\n T\u1ea4N TR\u00caN M\u1ed8T FOOT<\/strong> = (\u0110\u1ed8 B\u1ec0N K\u00c9O \u00d7 \u0110\u1ed8 D\u00c0Y\u00b2<\/strong>) \u00f7 (1,33 \u00d7 KHOANG M\u1ede V\u2011DIE<\/strong>)<\/p>\n\n\n\n V\u1eady n\u00ean:<\/p>\n\n\n\n Chuy\u1ec3n \u0111\u1ed5i sang t\u1ea5n m\u1ed7i foot:<\/p>\n\n\n\n 821 lb\/in \u00d7 12 in \u2248 9.852 lb\/ft \u2248 4,9 t\u1ea5n m\u1ed7i foot.<\/p>\n\n\n\n Ph\u1ea7n c\u1ee7a b\u1ea1n d\u00e0i 4 foot:<\/p>\n\n\n\n 4,9 \u00d7 4 = 19,6 t\u1ea5n t\u1ed5ng c\u1ed9ng.<\/p>\n\n\n\n G\u1ecdi l\u00e0 20 t\u1ea5n l\u1ef1c c\u1ea7n thi\u1ebft.<\/p>\n\n\n\n \u0110i\u1ec1u \u0111\u00f3 th\u1eadt nh\u00e0m ch\u00e1n. Nh\u01b0ng an to\u00e0n. \u0110\u00f3 l\u00e0 nh\u1eefng g\u00ec c\u00e1c b\u1ea3ng bi\u1ec3u \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng d\u1ef1a tr\u00ean \u2014 u\u1ed1n b\u1eb1ng kh\u00ed, th\u00e9p m\u1ec1m, t\u1ef7 l\u1ec7 khu\u00f4n \u201cb\u00ecnh th\u01b0\u1eddng\u201d.<\/p>\n\n\n\n V\u00e0 \u0111\u00e2y l\u00e0 l\u00fac nh\u1eefng ng\u01b0\u1eddi h\u1ecdc ngh\u1ec1 b\u1eaft \u0111\u1ea7u tr\u1edf n\u00ean t\u1ef1 m\u00e3n.<\/p>\n\n\n\n T\u00f4i t\u1eebng c\u00f3 m\u1ed9t c\u1eadu trai nh\u00ecn v\u00e0o k\u1ebft qu\u1ea3 25 t\u1ea5n nh\u01b0 th\u1ebf n\u00e0y v\u00e0 n\u00f3i: \u201cCh\u00fang ta c\u00f3 th\u1ec3 ch\u1ea1y c\u00e1i \u0111\u00f3 tr\u00ean b\u1ea5t k\u1ef3 m\u00e1y n\u00e0o trong x\u01b0\u1edfng.\u201d Hai gi\u1edd sau, c\u1eadu ta th\u1eed m\u1ed9t c\u00f4ng vi\u1ec7c t\u01b0\u01a1ng t\u1ef1 v\u1edbi t\u1ea5m 10\u2011gauge g\u1ea7n m\u00e9p b\u00e0n tr\u00ean m\u1ed9t m\u00e1y \u00e9p c\u01a1 c\u0169. T\u1ea3i l\u1ec7ch t\u00e2m l\u00e0m tr\u1ee5c tr\u01b0\u1ee3t v\u1eb7n nh\u1eb9 \u0111\u1ee7 \u0111\u1ec3 l\u00e0m n\u1ee9t \u0111\u1ea7u ch\u00e0y. B\u00e0i h\u1ecdc r\u1ebb. L\u1ebd ra c\u00f3 th\u1ec3 t\u1ec7 h\u01a1n.<\/p>\n\n\n\n C\u00e1c c\u00f4ng vi\u1ec7c c\u01a1 b\u1ea3n khi\u1ebfn b\u1ea1n ngh\u0129 c\u00f4ng th\u1ee9c l\u00e0 ph\u1ed5 qu\u00e1t.<\/p>\n\n\n\n Nh\u01b0ng kh\u00f4ng h\u1ec1 nh\u1ecf.<\/p>\n\n\n\n B\u1ea3n v\u1ebd gi\u1ed1ng nhau. C\u00f9ng u\u1ed1n 48 inch. C\u00f9ng \u0111\u1ed9 d\u00e0y 0,135.<\/p>\n\n\n\n Gi\u1edd kh\u00e1ch h\u00e0ng chuy\u1ec3n sang th\u00e9p kh\u00f4ng g\u1ec9 304. Th\u00f4ng th\u01b0\u1eddng \u0110\u1ed8 B\u1ec0N K\u00c9O<\/strong>? Kho\u1ea3ng 90.000 PSI.<\/p>\n\n\n\n V\u00e0 ng\u01b0\u1eddi v\u1eadn h\u00e0nh quy\u1ebft \u0111\u1ecbnh \u201csi\u1ebft b\u00e1n k\u00ednh\u201d b\u1eb1ng khu\u00f4n 0,75 inch KHOANG M\u1ede V\u2011DIE<\/strong> thay v\u00ec 1,0.<\/p>\n\n\n\n \u0110\u00f3 l\u00e0 hai bi\u1ebfn \u0111\u00e3 thay \u0111\u1ed5i. H\u00e3y quan s\u00e1t ng\u0103n x\u1ebfp.<\/p>\n\n\n\n Tr\u01b0\u1edbc ti\u00ean, h\u00ecnh h\u1ecdc v\u1edbi khu\u00f4n m\u1edbi:<\/p>\n\n\n\n Chuy\u1ec3n \u0111\u1ed5i:<\/p>\n\n\n\n 1.642 \u00d7 12 \u2248 19.704 lb\/ft \u2248 9,85 t\u1ea5n tr\u00ean m\u1ed7i foot.<\/p>\n\n\n\n D\u00e0i b\u1ed1n foot:<\/p>\n\n\n\n 9,85 \u00d7 4 \u2248 39,4 t\u1ea5n.<\/p>\n\n\n\n \u201cC\u00f4ng vi\u1ec7c 20 t\u1ea5n\u201d nay \u0111\u00e3 tr\u1edf th\u00e0nh c\u00f4ng vi\u1ec7c 40 t\u1ea5n.<\/p>\n\n\n\n Kh\u00f4ng c\u00f3 g\u00ec k\u1ef3 l\u1ea1 x\u1ea3y ra c\u1ea3. Ch\u00fang ta kh\u00f4ng t\u0103ng g\u1ea5p \u0111\u00f4i \u0111\u1ed9 d\u00e0y. Ch\u00fang ta kh\u00f4ng thay \u0111\u1ed5i chi\u1ec1u d\u00e0i. Ch\u00fang ta \u0111\u00e3 t\u0103ng l\u00ean \u0110\u1ed8 B\u1ec0N K\u00c9O<\/strong> g\u1ea5p 1,5 l\u1ea7n v\u00e0 thu nh\u1ecf KHOANG M\u1ede V\u2011DIE<\/strong> b\u1edbt 25%.<\/p>\n\n\n\n L\u1ef1c \u0111\u00e3 t\u0103ng g\u1ea5p \u0111\u00f4i.<\/p>\n\n\n\n \u0110\u00e2y ch\u00ednh x\u00e1c l\u00e0 c\u00e1ch m\u1ed9t x\u01b0\u1edfng t\u1ef1 \u0111\u01b0a m\u00ecnh v\u00e0o ng\u00f5 c\u1ee5t. T\u00f4i \u0111\u00e3 th\u1ea5y m\u1ed9t c\u00f4ng vi\u1ec7c 90 t\u1ea5n tr\u1edf th\u00e0nh th\u1ef1c t\u1ebf 130 t\u1ea5n ch\u1ec9 v\u00ec ai \u0111\u00f3 \u0111\u1ed5i sang khu\u00f4n ch\u1eb7t h\u01a1n \u0111\u1ec3 \u201cl\u00e0m s\u1eafc b\u00e1n k\u00ednh\u201d. M\u00e1y m\u00f3c kh\u00f4ng k\u00eau ca g\u00ec. D\u1ee5ng c\u1ee5 th\u00ec c\u00f3. Nh\u1eefng v\u1ebft n\u1ee9t nh\u1ecf \u1edf vai khu\u00f4n xu\u1ea5t hi\u1ec7n ba tu\u1ea7n sau trong m\u1ed9t l\u1ea7n ch\u1ea1y t\u1ea3i n\u1eb7ng h\u01a1n.<\/p>\n\n\n\n \u201cNh\u01b0ng 575 kh\u00f4ng ph\u1ea3i l\u00e0 m\u1ed9t \u0111\u1ecbnh lu\u1eadt v\u1eadt l\u00fd.\u201d<\/p>\n\n\n\n Kh\u00f4ng. N\u00f3 l\u00e0 m\u1ed9t l\u1ed1i t\u1eaft \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng d\u1ef1a tr\u00ean th\u00e9p m\u1ec1m v\u00e0 khu\u00f4n tho\u1ea3i m\u00e1i. Thay \u0111\u1ed5i m\u1ed9t trong hai, v\u00e0 c\u00e1nh tay \u0111\u00f2n thay \u0111\u1ed5i. M\u00f4men u\u1ed1n t\u0103ng l\u00ean v\u00ec b\u1ea1n \u0111\u00e3 r\u00fat ng\u1eafn nh\u1ecbp v\u00e0 \u0111\u1ed3ng th\u1eddi t\u0103ng s\u1ee9c c\u1ea3n v\u1eadt li\u1ec7u.<\/p>\n\n\n\n B\u00e2y gi\u1edd b\u1ea1n \u0111ang \u0111\u1ed1i m\u1eb7t v\u1edbi 40 t\u1ea5n thay v\u00ec 20.<\/p>\n\n\n\n V\u1eabn c\u1ea3m th\u1ea5y tho\u1ea3i m\u00e1i ch\u1ee9?<\/p>\n\n\n\n Ch\u00fang ta v\u1eabn gi\u1eef thi\u1ebft l\u1eadp th\u00e9p kh\u00f4ng g\u1ec9 \u1edf tr\u00ean: \u0111\u1ed9 d\u00e0y 0.135, d\u00e0i 48 inch, khu\u00f4n 0.75 inch, \u0110\u1ed8 B\u1ec0N K\u00c9O = 90.000 PSI<\/strong>.<\/p>\n\n\n\n \u00c9p kh\u00f4ng kh\u00ed c\u1ea7n kho\u1ea3ng t\u1ed5ng c\u1ed9ng 40 t\u1ea5n.<\/p>\n\n\n\n Gi\u1edd h\u00e3y chuy\u1ec3n ph\u01b0\u01a1ng ph\u00e1p.<\/p>\n\n\n\n \u00c9p \u0111\u00e1y \u2014 n\u01a1i ch\u00e0y \u00e9p v\u1eadt li\u1ec7u ti\u1ebfp x\u00fac ho\u00e0n to\u00e0n v\u1edbi g\u00f3c khu\u00f4n \u2014 th\u01b0\u1eddng c\u1ea7n \u00edt nh\u1ea5t g\u1ea5p 2 l\u1ea7n l\u1ef1c \u00e9p kh\u00f4ng kh\u00ed cho c\u00f9ng h\u00ecnh d\u1ea1ng. \u0110\u00f3 kh\u00f4ng ph\u1ea3i l\u00e0 \u00fd ki\u1ebfn. \u0110\u00f3 l\u00e0 v\u1eadt li\u1ec7u b\u1ecb \u00e9p v\u01b0\u1ee3t qua \u0111\u1ed9 h\u1ed3i ph\u1ee5c \u0111\u00e0n h\u1ed3i \u0111\u1ec3 tu\u00e2n theo bi\u1ebfn d\u1ea1ng d\u1ebbo theo th\u00e0nh khu\u00f4n.<\/p>\n\n\n\n V\u1eady n\u00ean:<\/p>\n\n\n\n 40 t\u1ea5n \u00d7 2 = 80 t\u1ea5n.<\/p>\n\n\n\n T\u1ed1i thi\u1ec3u.<\/p>\n\n\n\n M\u1ed9t s\u1ed1 v\u1eadt li\u1ec7u, \u0111\u1eb7c bi\u1ec7t l\u00e0 th\u00e9p kh\u00f4ng g\u1ec9 c\u00f3 kh\u1ea3 n\u0103ng h\u00f3a b\u1ec1n bi\u1ebfn d\u1ea1ng, t\u0103ng cao h\u01a1n n\u1eefa khi b\u1ea1n ti\u1ebfn g\u1ea7n cu\u1ed1i h\u00e0nh tr\u00ecnh v\u00ec di\u1ec7n t\u00edch ti\u1ebfp x\u00fac t\u0103ng nhanh v\u00e0 ma s\u00e1t t\u0103ng v\u1ecdt. \u0110\u01b0\u1eddng cong t\u1ea3i tr\u1ecdng c\u1ee7a b\u1ea1n tr\u1edf n\u00ean d\u1ed1c h\u01a1n g\u1ea7n ph\u1ea7n \u0111\u00e1y \u2014 \u0111\u00fang n\u01a1i m\u00e1y ch\u1ecbu \u00e1p su\u1ea5t th\u1ee7y l\u1ef1c cao nh\u1ea5t.<\/p>\n\n\n\n C\u00f4ng vi\u1ec7c tr\u00f4ng nh\u01b0 ch\u1ec9 c\u1ea7n 20 t\u1ea5n trong \u00e9p kh\u00f4ng kh\u00ed th\u00e9p th\u01b0\u1eddng nay l\u1ea1i l\u00e0 m\u1ed9t ho\u1ea1t \u0111\u1ed9ng \u00e9p \u0111\u00e1y th\u00e9p kh\u00f4ng g\u1ec9 80 t\u1ea5n.<\/p>\n\n\n\n G\u1ea5p b\u1ed1n l\u1ea7n m\u1ee9c c\u01a1 b\u1ea3n.<\/p>\n\n\n\n C\u00f9ng b\u1ea3n v\u1ebd \u0111\u00f3.<\/p>\n\n\n\n T\u00f4i t\u1eebng th\u1ea5y m\u1ed9t \u0111\u1ed9i \u00e9p \u0111\u00e1y m\u1ed9t c\u00f4ng vi\u1ec7c th\u00e9p kh\u00f4ng g\u1ec9 50 t\u1ea5n tr\u00ean m\u00e1y \u00e9p 60 t\u1ea5n. T\u00ednh to\u00e1n \u00e9p kh\u00f4ng kh\u00ed th\u00ec \u1ed5n. H\u1ecd \u0111\u00e3 qu\u00ean H\u1ec6 S\u1ed0 PH\u01af\u01a0NG PH\u00c1P<\/strong>. M\u00e1y \u0111\u1ea1t \u00e1p su\u1ea5t gi\u1edbi h\u1ea1n gi\u1eefa h\u00e0nh tr\u00ecnh v\u00e0 d\u1eebng l\u1ea1i. H\u1ecd th\u1eed l\u1ea1i. Khu\u00f4n th\u00ec c\u00f2n, khe h\u1edf tr\u01b0\u1ee3t c\u1ee7a tr\u1ee5 \u00e9p th\u00ec h\u1ecfng. T\u1eeb \u0111\u00f3 m\u00e1y kh\u00f4ng bao gi\u1edd ch\u1ea1y th\u1eb3ng n\u1eefa.<\/p>\n\n\n\n \u0110\u00e2y l\u00e0 m\u00f4 h\u00ecnh b\u1ea1n n\u00ean th\u1ea5y:<\/p>\n\n\n\n \u0110\u00e2y kh\u00f4ng ph\u1ea3i l\u00e0 nh\u1eefng \u0111i\u1ec1u ch\u1ec9nh nh\u1ecf. Ch\u00fang c\u1ed9ng d\u1ed3n.<\/p>\n\n\n\n V\u00e0 m\u00e1y kh\u00f4ng quan t\u00e2m bi\u1ec3u \u0111\u1ed3 n\u00f3i g\u00ec. N\u00f3 ch\u1ec9 c\u1ea3m nh\u1eadn l\u1ef1c tr\u00ean m\u1eb7t gi\u01b0\u1eddng \u2014 ph\u00e2n b\u1ed1, t\u1eadp trung, l\u1ec7ch t\u00e2m, b\u1ea5t k\u1ef3 th\u1ee9 g\u00ec b\u1ea1n \u0111\u01b0a v\u00e0o.<\/p>\n\n\n\n V\u00ec v\u1eady, khi m\u1ed9t b\u1ea3n in thay \u0111\u1ed5i v\u1eadt li\u1ec7u, ho\u1eb7c ai \u0111\u00f3 l\u1ea5y m\u1ed9t khu\u00f4n ch\u1eb7t h\u01a1n, ho\u1eb7c b\u1ed9 ph\u1eadn s\u1ea3n xu\u1ea5t quy\u1ebft \u0111\u1ecbnh \u00e9p ho\u00e0n to\u00e0n thay v\u00ec \u00e9p b\u1eb1ng kh\u00f4ng kh\u00ed \u0111\u1ec3 \u201ckh\u00f3a g\u00f3c\u201d, b\u1ea1n kh\u00f4ng \u0111\u01b0\u1ee3c \u0111o\u00e1n.<\/p>\n\n\n\n B\u1ea1n ph\u1ea3i t\u00ednh l\u1ea1i t\u1ea3i tr\u1ecdng t\u1eeb \u0111\u1ea7u. Sau \u0111\u00f3 so s\u00e1nh n\u00f3 v\u1edbi c\u00f4ng su\u1ea5t th\u1ef1c c\u1ee7a m\u00e1y tr\u00ean ch\u00ednh chi\u1ec1u d\u00e0i u\u1ed1n \u0111\u00f3 \u2014 ch\u1ee9 kh\u00f4ng ph\u1ea3i con s\u1ed1 l\u00fd t\u01b0\u1edfng tr\u00ean bi\u1ec3n t\u00ean m\u00e1y.<\/p>\n\n\n\n B\u1edfi v\u00ec c\u00f4ng th\u1ee9c l\u00e0 m\u1ed9t kh\u1ea9u s\u00fang n\u1ea1p \u0111\u1ea1n. An to\u00e0n khi b\u1ea1n bi\u1ebft ch\u00ednh x\u00e1c nh\u1eefng g\u00ec c\u00f3 trong bu\u1ed3ng \u0111\u1ea1n.<\/p>\n\n\n\n Nguy hi\u1ec3m ch\u1ebft ng\u01b0\u1eddi khi b\u1ea1n cho r\u1eb1ng m\u1ecdi vi\u00ean \u0111\u1ea1n \u0111\u1ec1u gi\u1ed1ng nhau.<\/p>\n\n\n\n B\u1ea1n \u0111\u00e3 ch\u1ea1y c\u00e1c con s\u1ed1. B\u1ea1n \u0111\u00e3 \u0111i\u1ec1u ch\u1ec9nh cho \u0110\u1ed8 B\u1ec0N K\u00c9O<\/strong>, th\u1eaft ch\u1eb7t KHOANG M\u1ede V\u2011DIE<\/strong>, nh\u00e2n th\u00eam cho \u00e9p ho\u00e0n to\u00e0n. M\u00e1y t\u00ednh n\u00f3i 80 t\u1ea5n.<\/p>\n\n\n\n V\u1eady l\u00e0m sao b\u1ea1n bi\u1ebft chi\u1ebfc m\u00e1y \u00e9p 100 t\u1ea5n c\u1ee7a m\u00ecnh th\u1ef1c s\u1ef1 c\u00f3 th\u1ec3 ch\u1ecbu \u0111\u01b0\u1ee3c t\u1ea3i \u0111\u00f3 tr\u00ean 6 feet m\u00e0 kh\u00f4ng t\u1ef1 v\u1eb7n m\u00ecnh th\u00e0nh ph\u1ebf li\u1ec7u?<\/p>\n\n\n\n V\u00ec danh m\u1ee5c s\u1ea3n ph\u1ea9m c\u1ee7a CN-HAWE d\u1ef1a tr\u00ean CNC 100% v\u00e0 bao qu\u00e1t c\u00e1c \u1ee9ng d\u1ee5ng cao c\u1ea5p trong c\u1eaft laser, u\u1ed1n, r\u00e3nh, v\u00e0 x\u00e9n, n\u1ebfu b\u01b0\u1edbc ti\u1ebfp theo l\u00e0 trao \u0111\u1ed5i tr\u1ef1c ti\u1ebfp v\u1edbi \u0111\u1ed9i ng\u0169, 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 \u0110\u00e2y l\u00e0 ph\u1ea7n m\u00e0 kh\u00f4ng ai ghi trong b\u1ea3ng: c\u00f4ng th\u1ee9c gi\u1ea3 \u0111\u1ecbnh d\u1ee5ng c\u1ee5 ho\u00e0n h\u1ea3o, t\u1ea3i ph\u00e2n b\u1ed1 ho\u00e0n h\u1ea3o, v\u00e0 v\u1eadt li\u1ec7u ho\u1ea1t \u0111\u1ed9ng ho\u00e0n h\u1ea3o. \u0110\u00f3 l\u00e0 \u1ea3o t\u01b0\u1edfng. X\u01b0\u1edfng th\u1ef1c t\u1ebf s\u1eed d\u1ee5ng khu\u00f4n m\u00f2n, chi ti\u1ebft l\u1ec7ch t\u00e2m, t\u1ea5m kim lo\u1ea1i c\u00f3 c\u1ea5u tr\u00fac h\u1ea1t kh\u00e1c nhau, v\u00e0 nh\u1eefng chi\u1ebfc m\u00e1y ch\u1ec9 \u0111\u1ea1t \u0111\u1ee7 c\u00f4ng su\u1ea5t \u0111\u1ecbnh m\u1ee9c tr\u00ean m\u1ed9t ph\u1ea7n chi\u1ec1u d\u00e0i b\u00e0n. M\u1ed9t m\u00e1y \u00e9p 175 t\u1ea5n \u00d7 10 foot kh\u00f4ng ph\u1ea3i 175 t\u1ea5n \u1edf m\u1ecdi n\u01a1i; n\u1ebfu b\u1ea1n \u0111\u1ea9y to\u00e0n b\u1ed9 l\u1ef1c \u0111\u00f3 tr\u00ean to\u00e0n b\u1ed9 chi\u1ec1u d\u00e0i b\u00e0n, b\u1ea1n s\u1ebd l\u00e0m v\u00f5ng khung tr\u1eeb khi b\u1ea1n hi\u1ec3u c\u00e1ch t\u1ea3i \u0111\u01b0\u1ee3c ph\u00e2n b\u1ed1.<\/p>\n\n\n\n To\u00e1n h\u1ecdc cho b\u1ea1n m\u1ed9t con s\u1ed1. M\u00e1y c\u1ea3m nh\u1eadn m\u1ed9t m\u1eabu l\u1ef1c.<\/p>\n\n\n\n Kho\u1ea3ng c\u00e1ch \u0111\u00f3 l\u00e0 n\u01a1i d\u1ee5ng c\u1ee5 b\u1ecb ph\u00e1 h\u1ee7y.<\/p>\n\n\n\n T\u00f4i \u0111\u00e3 t\u1eebng th\u1ea5y m\u1ed9t \u0111\u1ed9i u\u1ed1n t\u1ea5m d\u00e0y 1\/4 inch g\u1ea7n cu\u1ed1i gi\u01b0\u1eddng m\u00e1y d\u00e0i v\u00ec \u201cch\u1ed7 \u0111\u00f3 tr\u1ed1ng.\u201d Con s\u1ed1 t\u00ednh to\u00e1n T\u1ea4N TR\u00caN M\u1ed8T FOOT<\/strong> th\u00ec \u1ed5n. \u0110i\u1ec1u h\u1ecd kh\u00f4ng nh\u1eadn ra l\u00e0 c\u00f4ng su\u1ea5t \u0111\u1ecbnh m\u1ee9c \u0111\u1ea7y \u0111\u1ee7 ch\u1ec9 an to\u00e0n tr\u00ean kho\u1ea3ng 60% c\u1ee7a chi\u1ec1u d\u00e0i gi\u01b0\u1eddng \u0111\u00f3. Khung b\u1ecb bi\u1ebfn d\u1ea1ng. V\u00f5ng v\u0129nh vi\u1ec5n. T\u1eeb \u0111\u00f3 m\u00e1y \u00e9p \u0111\u00f3 kh\u00f4ng bao gi\u1edd \u0111\u1ea1t song song n\u1eefa n\u1ebfu kh\u00f4ng th\u00eam \u0111\u1ec7m v\u00e0 c\u1ea7u nguy\u1ec7n.<\/p>\n\n\n\n G\u00f3c khu\u00f4n s\u1eafc t\u1eadp trung l\u1ef1c d\u1ecdc theo m\u1ed9t \u0111\u01b0\u1eddng ti\u1ebfp x\u00fac s\u1ea1ch. \u0110\u00f3 l\u00e0 \u0111i\u1ec1u m\u00e0 c\u00f4ng th\u1ee9c c\u1ee7a b\u1ea1n gi\u1ea3 \u0111\u1ecbnh.<\/p>\n\n\n\n Gi\u1edd h\u00e3y t\u01b0\u1edfng t\u01b0\u1ee3ng m\u1ed9t khu\u00f4n \u0111\u00e3 ch\u1ea1y h\u00e0ng ngh\u00ecn l\u1ea7n v\u1edbi th\u00e9p kh\u00f4ng g\u1ec9. B\u00e1n k\u00ednh v\u1ed1n s\u1eafc b\u00e9n t\u1ea1i VAI KHU\u00d4N<\/strong> \u0111\u00e3 b\u1ecb b\u1eb9t. Thay v\u00ec m\u1ed9t \u0111\u01b0\u1eddng ti\u1ebfp x\u00fac h\u1eb9p, b\u1ea1n c\u00f3 m\u1ed9t v\u00f9ng ti\u1ebfp x\u00fac b\u1ecb d\u00e0n tr\u1ea3i. Di\u1ec7n t\u00edch b\u1ec1 m\u1eb7t nhi\u1ec1u h\u01a1n. Ma s\u00e1t nhi\u1ec1u h\u01a1n. C\u1ea3n tr\u1edf nhi\u1ec1u h\u01a1n \u0111\u1ed1i v\u1edbi d\u00f2ng ch\u1ea3y c\u1ee7a v\u1eadt li\u1ec7u.<\/p>\n\n\n\n L\u1ef1c t\u0103ng l\u00ean.<\/p>\n\n\n\n Kh\u00f4ng ph\u1ea3i v\u00ec \u0110\u1ed8 B\u1ec0N K\u00c9O<\/strong> \u0111\u00e3 thay \u0111\u1ed5i. Kh\u00f4ng ph\u1ea3i v\u00ec \u0110\u1ed8 D\u00c0Y<\/strong> \u0111\u00e3 thay \u0111\u1ed5i. M\u00e0 l\u00e0 v\u00ec ma s\u00e1t v\u00e0 h\u00ecnh h\u1ecdc ti\u1ebfp x\u00fac \u0111\u00e3 thay \u0111\u1ed5i, v\u00e0 c\u00f4ng th\u1ee9c c\u1ee7a b\u1ea1n kh\u00f4ng c\u00f3 ch\u1ed7 cho \u201cd\u1ee5ng c\u1ee5 b\u1ecb m\u00f2n.\u201d<\/p>\n\n\n\n Gi\u1ea3 \u0111\u1ecbnh \u2014 v\u00e0 t\u00f4i xin nh\u1ea5n m\u1ea1nh \u0111\u00e2y ch\u1ec9 l\u00e0 m\u1ed9t \u01b0\u1edbc l\u01b0\u1ee3ng trong x\u01b0\u1edfng, kh\u00f4ng ph\u1ea3i m\u1ed9t nghi\u00ean c\u1ee9u trong ph\u00f2ng th\u00ed nghi\u1ec7m \u2014 t\u00f4i \u0111\u00e3 th\u1ea5y nh\u1eefng c\u00f4ng vi\u1ec7c gi\u1ed1ng h\u1ec7t nhau c\u1ea7n nhi\u1ec1u l\u1ef1c h\u01a1n kho\u1ea3ng 15\u201330% khi chuy\u1ec3n t\u1eeb khu\u00f4n m\u00e0i ch\u00ednh x\u00e1c m\u1edbi sang khu\u00f4n s\u1ea3n xu\u1ea5t c\u0169. \u00c2m thanh c\u1ee7a m\u00e1y \u00e9p thay \u0111\u1ed5i. \u00c1p su\u1ea5t th\u1ee7y l\u1ef1c t\u0103ng d\u1ea7n \u1edf g\u1ea7n cu\u1ed1i h\u00e0nh tr\u00ecnh. G\u00f3c u\u1ed1n tr\u1edf n\u00ean c\u1ee9ng \u0111\u1ea7u.<\/p>\n\n\n\n M\u00e1y t\u00ednh v\u1eabn b\u00e1o 40 t\u1ea5n.<\/p>\n\n\n\n Nh\u01b0ng m\u00e1y l\u1ea1i n\u00f3i kh\u00e1c.<\/p>\n\n\n\n T\u00f4i \u0111\u00e3 ph\u00e1 h\u1ee7y m\u1ed9t b\u1ed9 khu\u00f4n ch\u00ednh x\u00e1c 140.000 b\u1eb1ng c\u00e1ch tin v\u00e0o ph\u00e9p t\u00ednh s\u1ea1ch s\u1ebd thay v\u00ec th\u00e9p b\u1ea9n. C\u00e1c con s\u1ed1 l\u00e0 \u0111\u00fang. D\u1ee5ng c\u1ee5 th\u00ec kh\u00f4ng. C\u00e1c v\u1ebft n\u1ee9t si\u00eau nh\u1ecf b\u1eaft \u0111\u1ea7u \u1edf vai b\u1ecb m\u00f2n v\u00e0 lan ra d\u01b0\u1edbi c\u00f4ng vi\u1ec7c ti\u1ebfp theo n\u1eb7ng h\u01a1n. Ch\u00fang t\u00f4i ph\u00e1t hi\u1ec7n ra khi m\u1ed9t g\u00f3c g\u00e3y gi\u1eefa l\u00fac u\u1ed1n v\u00e0 l\u00e0m x\u01b0\u1edbc s\u1ea3n ph\u1ea9m c\u1ee7a kh\u00e1ch h\u00e0ng.<\/p>\n\n\n\n B\u1ea1n kh\u00f4ng th\u1ec3 \u0111\u01b0a s\u1ef1 m\u00e0i m\u00f2n v\u00e0o m\u1ed9t \u0110\u1ed8 D\u00c0Y\u00b2<\/strong> bi\u1ec3u th\u1ee9c g\u1ecdn g\u00e0ng. B\u1ea1n ph\u1ea3i nh\u00ecn v\u00e0o mi\u1ebfng kim lo\u1ea1i tr\u01b0\u1edbc m\u1eb7t v\u00e0 t\u1ef1 h\u1ecfi n\u00f3 \u0111\u00e3 tr\u1ea3i qua nh\u1eefng g\u00ec.<\/p>\n\n\n\n T\u1ed5ng l\u1ef1c u\u1ed1n ch\u1ec9 l\u00e0 m\u1ed9t n\u1eeda c\u00e2u chuy\u1ec7n.<\/p>\n\n\n\n M\u00e1y ch\u1ea5n \u0111\u01b0\u1ee3c \u0111\u1ecbnh m\u1ee9c theo \u0111\u01a1n v\u1ecb t\u1ea5n tr\u00ean chi\u1ec1u d\u00e0i \u2014 t\u1ea5n m\u1ed7i foot, t\u1ea5n m\u1ed7i m\u00e9t. M\u1ee9c \u0111\u00f3 gi\u1ea3 \u0111\u1ecbnh t\u1ea3i \u0111\u01b0\u1ee3c ph\u00e2n b\u1ed1 \u0111\u1ec1u. Khi t\u1ea3i \u0111\u01b0\u1ee3c tr\u1ea3i \u0111\u1ec1u, khung m\u00e1y ch\u1ecbu l\u1ef1c gi\u1ed1ng nh\u01b0 m\u1ed9t c\u00e2y c\u1ea7u ch\u1ecbu xe qua l\u1ea1i.<\/p>\n\n\n\n Gi\u1edd h\u00e3y \u0111\u1eb7t m\u1ed9t chi ti\u1ebft h\u1eb9p d\u01b0\u1edbi m\u1ed9t ch\u00e0y nh\u1ecdn b\u00e1n k\u00ednh nh\u1ecf g\u1ea7n m\u1ed9t \u0111\u1ea7u b\u00e0n m\u00e1y.<\/p>\n\n\n\n B\u1ea1n ch\u01b0a v\u01b0\u1ee3t qu\u00e1 T\u1ed4NG L\u1ef0C C\u00d3 S\u1eb4N<\/strong>. Nh\u01b0ng b\u1ea1n \u0111\u00e3 t\u1ea1o ra \u0111i\u1ec3m t\u0103ng \u00e1p su\u1ea5t T\u1ea4N TR\u00caN M\u1ed8T FOOT<\/strong> tr\u00ean m\u1ed9t \u0111o\u1ea1n ng\u1eafn v\u00e0 d\u1ecbch n\u00f3 kh\u1ecfi t\u00e2m. \u0110\u1ea7u ch\u1ea5n v\u00e0 b\u00e0n m\u00e1y kh\u00f4ng \u201cth\u1ea5y\u201d 80 t\u1ea5n t\u1ed5ng c\u1ed9ng. Ch\u00fang th\u1ea5y m\u1ed9t m\u00f4men u\u1ed1n t\u1eadp trung \u0111ang c\u1ed1 xo\u1eafn ch\u00fang ra kh\u1ecfi nhau.<\/p>\n\n\n\n \u0110\u00e2y ch\u00ednh l\u00e0 v\u1ea5n \u0111\u1ec1 c\u1ee7a ch\u00e0y nh\u1ecdn.<\/p>\n\n\n\n C\u00e1c ch\u00e0y t\u00f9y ch\u1ec9nh v\u1edbi \u0111\u1ea7u m\u0169i nh\u1ecf v\u00e0 \u0111\u00e1y V h\u1eb9p l\u00e0m gi\u1ea3m v\u00f9ng ti\u1ebfp x\u00fac. C\u00f9ng m\u1ed9t l\u1ef1c t\u00ednh to\u00e1n gi\u1edd ph\u1ea3i \u0111i qua \u00edt th\u00e9p h\u01a1n trong d\u1ee5ng c\u1ee5 v\u00e0 \u00edt chi\u1ec1u r\u1ed9ng h\u01a1n trong k\u1ebft c\u1ea5u m\u00e1y. \u1ee8ng su\u1ea5t t\u0103ng nhanh v\u00ec \u1ee9ng su\u1ea5t b\u1eb1ng l\u1ef1c chia cho di\u1ec7n t\u00edch. Gi\u1ea3m di\u1ec7n t\u00edch, \u1ee9ng su\u1ea5t t\u0103ng g\u1ea5p \u0111\u00f4i.<\/p>\n\n\n\n T\u00f4i \u0111\u00e3 th\u1ea5y m\u1ed9t c\u00f4ng vi\u1ec7c 90 t\u1ea5n bi\u1ebfn th\u00e0nh th\u1ef1c t\u1ebf 130 t\u1ea5n ch\u1ec9 v\u00ec ai \u0111\u00f3 \u0111\u1ed5i sang khu\u00f4n ch\u1eb7t h\u01a1n \u0111\u1ec3 \u201cl\u00e0m b\u00e1n k\u00ednh s\u1eafc h\u01a1n.\u201d T\u1ed5ng l\u1ef1c t\u0103ng l\u00e0 \u0111i\u1ec1u d\u1ec5 th\u1ea5y. \u0110i\u1ec1u kh\u00f4ng d\u1ec5 th\u1ea5y ch\u00ednh l\u00e0 \u0111i\u1ec3m t\u0103ng \u00e1p t\u1ea1i \u0111\u1ea7u ch\u00e0y. \u0110\u1ea7u ch\u00e0y b\u1ecb m\u1ebb. R\u1ed3i n\u00f3 b\u1ecb l\u00f5m. R\u1ed3i n\u00f3 b\u1eaft \u0111\u1ea7u in d\u1ea5u l\u00f5m \u0111\u00f3 l\u00ean m\u1ecdi chi ti\u1ebft cho \u0111\u1ebfn khi ch\u00fang t\u00f4i ph\u00e1t hi\u1ec7n ra.<\/p>\n\n\n\n V\u00e0 h\u00e3y nh\u1edb gi\u1edbi h\u1ea1n chi\u1ec1u d\u00e0i c\u1ee7a b\u00e0n m\u00e1y. Nhi\u1ec1u m\u00e1y c\u00f3 th\u1ec3 ho\u1ea1t \u0111\u1ed9ng an to\u00e0n \u1edf m\u1ee9c c\u00f4ng su\u1ea5t \u0111\u1ea7y \u0111\u1ee7 tr\u00ean kho\u1ea3ng 60% c\u1ee7a b\u00e0n. N\u1ebfu b\u1ea1n t\u1eadp trung t\u1ea3i tr\u1ecdng trong ph\u1ea1m vi 2 feet \u1edf m\u00e9p th\u00ec b\u1ea1n kh\u00f4ng c\u00f2n n\u1eb1m trong \u201cv\u00f9ng an to\u00e0n\u201d c\u1ee7a b\u1ea3ng th\u00f4ng s\u1ed1 n\u1eefa.<\/p>\n\n\n\n T\u00ednh to\u00e1n c\u1ee7a b\u1ea1n c\u00f3 th\u1ec3 \u0111\u00fang v\u1ec1 t\u1ed5ng s\u1ed1 t\u1ea5n.<\/p>\n\n\n\n N\u00f3 v\u1eabn c\u00f3 th\u1ec3 sai \u0111\u1ed1i v\u1edbi khung m\u00e1y c\u1ee7a b\u1ea1n.<\/p>\n\n\n\n Hai t\u1ea5m. C\u00f9ng d\u1ea5u c\u1ea5p ch\u1ea5t l\u01b0\u1ee3ng. C\u00f9ng \u0110\u1ed8 B\u1ec0N K\u00c9O<\/strong> tr\u00ean gi\u1ea5y t\u1edd.<\/p>\n\n\n\n U\u1ed1n m\u1ed9t t\u1ea5m song song v\u1edbi h\u01b0\u1edbng c\u00e1n. U\u1ed1n t\u1ea5m kia vu\u00f4ng g\u00f3c v\u1edbi h\u01b0\u1edbng c\u00e1n.<\/p>\n\n\n\n Ch\u00fang kh\u00f4ng h\u00e0nh x\u1eed gi\u1ed1ng nhau.<\/p>\n\n\n\n Qu\u00e1 tr\u00ecnh c\u00e1n k\u00e9o d\u00e0i c\u1ea5u tr\u00fac h\u1ea1t v\u1eadt li\u1ec7u. Khi b\u1ea1n u\u1ed1n ngang h\u01b0\u1edbng h\u1ea1t, b\u1ea1n ch\u1ed1ng l\u1ea1i c\u1ea5u tr\u00fac \u0111\u00f3 theo c\u00e1ch kh\u00e1c v\u1edbi khi u\u1ed1n c\u00f9ng h\u01b0\u1edbng h\u1ea1t. \u0110\u1ed9 \u0111\u00e0n h\u1ed3i thay \u0111\u1ed5i. G\u00f3c u\u1ed1n v\u01b0\u1ee3t y\u00eau c\u1ea7u thay \u0111\u1ed5i. \u0110\u00f4i khi \u0111\u01b0\u1eddng cong l\u1ef1c \u1edf g\u1ea7n cu\u1ed1i h\u00e0nh tr\u00ecnh d\u1ed1c h\u01a1n v\u00ec v\u1eadt li\u1ec7u kh\u00e1ng n\u00e9n kh\u00e1c nhau t\u00f9y theo h\u01b0\u1edbng.<\/p>\n\n\n\n C\u00f4ng th\u1ee9c c\u1ee7a b\u1ea1n coi th\u00e9p nh\u01b0 \u0111\u1ea5t s\u00e9t \u0111\u1eb3ng h\u01b0\u1edbng \u2014 c\u00f3 c\u00e1c \u0111\u1eb7c t\u00ednh gi\u1ed1ng nhau \u1edf m\u1ecdi h\u01b0\u1edbng.<\/p>\n\n\n\n Nh\u01b0ng kh\u00f4ng h\u1ec1 nh\u1ecf.<\/p>\n\n\n\n V\u00e0 r\u1ed3i c\u00f2n hi\u1ec7n t\u01b0\u1ee3ng h\u00f3a b\u1ec1n do bi\u1ebfn d\u1ea1ng. \u0110\u1eb7c bi\u1ec7t l\u00e0 th\u00e9p kh\u00f4ng g\u1ec9, t\u0103ng \u0111\u1ed9 b\u1ec1n khi b\u1ecb bi\u1ebfn d\u1ea1ng. B\u1ea1n c\u00e0ng \u00e9p, n\u00f3 c\u00e0ng kh\u00e1ng l\u1ea1i. \u0110i\u1ec1u \u0111\u00f3 c\u00f3 ngh\u0129a l\u00e0 v\u00e0i \u0111\u1ed9 cu\u1ed1i c\u00f9ng c\u1ee7a qu\u00e1 tr\u00ecnh u\u1ed1n \u0111\u00e1y c\u00f3 th\u1ec3 y\u00eau c\u1ea7u l\u1ef1c cao h\u01a1n t\u1ef7 l\u1ec7 so v\u1edbi ph\u1ea7n \u0111\u1ea7u h\u00e0nh tr\u00ecnh t\u00ednh to\u00e1n. C\u1ea3m bi\u1ebfn t\u1ea3i \u2014 n\u1ebfu b\u1ea1n \u0111\u1ee7 kh\u00f4n ngoan \u0111\u1ec3 theo d\u00f5i n\u00f3 \u2014 s\u1ebd cho th\u1ea5y s\u1ef1 t\u0103ng \u0111\u1ed9t bi\u1ebfn \u0111\u00f3.<\/p>\n\n\n\n T\u00f4i t\u1eebng l\u00e0m n\u1ee9t khu\u00f4n \u0111\u1ed9t trong m\u1ed9t \u0111\u1ee3t ch\u1ea1y th\u00e9p kh\u00f4ng g\u1ec9 d\u00e0i v\u00ec ch\u00fang t\u00f4i xoay c\u00e1c t\u1ea5m gi\u1eefa ch\u1eebng \u0111\u1ec3 t\u1ed1i \u01b0u h\u00f3a ph\u1ebf li\u1ec7u. M\u1ed9t n\u1eeda s\u1ea3n ph\u1ea9m u\u1ed1n \u1ed5n \u0111\u1ecbnh. C\u00e1c t\u1ea5m \u0111\u00e3 xoay c\u1ea7n g\u00f3c u\u1ed1n v\u01b0\u1ee3t l\u1edbn h\u01a1n v\u00e0 va m\u1ea1nh h\u01a1n \u1edf \u0111\u00e1y. D\u1ee5ng c\u1ee5 nh\u1eadn ra s\u1ef1 kh\u00e1c bi\u1ec7t m\u1eb7c d\u00f9 b\u1ea3n v\u1ebd th\u00ec kh\u00f4ng.<\/p>\n\n\n\n V\u1eadt li\u1ec7u c\u00f3 tr\u00ed nh\u1edb. M\u00e1y t\u00ednh c\u1ee7a b\u1ea1n th\u00ec kh\u00f4ng.<\/p>\n\n\n\n \u0110i\u1ec1u \u0111\u00f3 d\u1eabn \u0111\u1ebfn c\u00e2u h\u1ecfi b\u1ea1n n\u00ean t\u1ef1 h\u1ecfi tr\u01b0\u1edbc m\u1ed7i ca ch\u1ea1y quan tr\u1ecdng: kh\u00f4ng ph\u1ea3i \u201cT\u1ed5ng t\u1ea3i l\u00fd thuy\u1ebft l\u00e0 bao nhi\u00eau?\u201d m\u00e0 l\u00e0 \u201cGi\u00e1 tr\u1ecb t\u1ed1i \u0111a T\u1ea4N TR\u00caN M\u1ed8T FOOT<\/strong> m\u00e0 m\u00e1y c\u1ee7a t\u00f4i c\u00f3 th\u1ec3 cung c\u1ea5p an to\u00e0n, tr\u00ean \u0111\u00fang chi\u1ec1u d\u00e0i n\u00e0y, \u1edf \u0111\u00fang v\u1ecb tr\u00ed n\u00e0y, v\u1edbi \u0111\u00fang \u0111i\u1ec1u ki\u1ec7n d\u1ee5ng c\u1ee5 n\u00e0y?\u201d<\/p>\n\n\n\n \u0110\u00f3 kh\u00f4ng c\u00f2n l\u00e0 v\u1ea5n \u0111\u1ec1 c\u00f4ng th\u1ee9c n\u1eefa.<\/p>\n\n\n\n \u0110\u00f3 l\u00e0 quy tr\u00ecnh x\u00e1c nh\u1eadn c\u1ee7a ng\u01b0\u1eddi v\u1eadn h\u00e0nh.<\/p>\n\n\n\n B\u1ea1n \u0111\u00e3 ho\u00e0n t\u1ea5t t\u00ednh to\u00e1n. B\u1ea1n \u0111\u00e3 \u0111i\u1ec1u ch\u1ec9nh cho \u0110\u1ed8 B\u1ec0N K\u00c9O<\/strong>, \u0111\u00e3 hi\u1ec7u ch\u1ec9nh cho \u0110\u1ed8 M\u1ede KHU\u00d4N<\/strong>, nh\u00e2n cho qu\u00e1 tr\u00ecnh \u00e9p ho\u00e0n to\u00e0n thay v\u00ec u\u1ed1n b\u1eb1ng kh\u00ed. T\u1ed1t.<\/p>\n\n\n\n Gi\u1edd h\u00e3y qu\u00ean \u0111i ni\u1ec1m t\u1ef1 h\u00e0o b\u1ea1n c\u1ea3m th\u1ea5y v\u1ec1 b\u1ea3ng t\u00ednh \u0111\u00f3.<\/p>\n\n\n\n B\u1edfi v\u00ec m\u00e1y m\u00f3c kh\u00f4ng quan t\u00e2m v\u1ebb \u0111\u1eb9p thanh nh\u00e3 c\u1ee7a con s\u1ed1 c\u1ee7a b\u1ea1n. T\u1ea4N TR\u00caN M\u1ed8T FOOT<\/strong> N\u00f3 ch\u1ec9 quan t\u00e2m l\u1ef1c \u0111\u00f3 \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng \u1edf \u0111\u00e2u, trong bao l\u00e2u, v\u00e0 li\u1ec7u khung th\u00e9p b\u00ean d\u01b0\u1edbi \u0111\u1ea7u \u00e9p c\u00f3 th\u1ec3 ch\u1ecbu \u0111\u01b0\u1ee3c l\u1ef1c \u0111\u00f3 m\u00e0 kh\u00f4ng b\u1ecb bi\u1ebfn d\u1ea1ng hay kh\u00f4ng. \u0110\u00e2y l\u00e0 l\u00fac ch\u00fang ta ng\u1eebng l\u00e0m nh\u00e0 to\u00e1n h\u1ecdc v\u00e0 b\u1eaft \u0111\u1ea7u l\u00e0m ng\u01b0\u1eddi v\u1eadn h\u00e0nh.<\/p>\n\n\n\n \u0110\u00e2y l\u00e0 quy tr\u00ecnh. Kh\u00f4ng ph\u1ea3i l\u00fd thuy\u1ebft. Kh\u00f4ng ph\u1ea3i th\u00f4ng tin qu\u1ea3ng c\u00e1o. L\u00e0 m\u1ed9t chu\u1ed7i h\u00e0nh \u0111\u1ed9ng.<\/p>\n\n\n\n \u0110\u1ea7u ti\u00ean: so s\u00e1nh T\u1ea4N TR\u00caN M\u1ed8T FOOT<\/strong> v\u1edbi kh\u1ea3 n\u0103ng m\u00e1y c\u1ee7a b\u1ea1n c\u00f3 th\u1ec3 v\u1eadn h\u00e0nh an to\u00e0n tr\u00ean \u0111\u00fang chi\u1ec1u d\u00e0i m\u00e0 b\u1ea1n \u0111ang u\u1ed1n. Th\u1ee9 hai: t\u1ea1o ra m\u1ed9t bi\u00ean \u0111\u1ed9 an to\u00e0n th\u1ef1c t\u1ebf \u0111\u1ec3 t\u00ednh \u0111\u1ebfn s\u1ef1 thay \u0111\u1ed5i ph\u01b0\u01a1ng ph\u00e1p v\u00e0 c\u00e1c y\u1ebfu t\u1ed1 ch\u01b0a bi\u1ebft. Th\u1ee9 ba: bi\u1ebfn c\u00fa \u00e9p \u0111\u1ea7u ti\u00ean th\u00e0nh m\u1ed9t c\u00f4ng c\u1ee5 ch\u1ea9n \u0111o\u00e1n, kh\u00f4ng ph\u1ea3i m\u1ed9t b\u01b0\u1edbc nh\u1ea3y \u0111\u1ee9c tin.<\/p>\n\n\n\n T\u00f4i t\u1eebng ch\u1ee9ng ki\u1ebfn m\u1ed9t m\u00e1y \u00e9p 175 t\u1ea5n b\u1ecb cong v\u0129nh vi\u1ec5n ch\u1ec9 v\u00ec ai \u0111\u00f3 tin v\u00e0o t\u1ed5ng t\u1ea3i tr\u1ecdng thay v\u00ec s\u1ef1 ph\u00e2n b\u1ed1. T\u00ednh to\u00e1n cho ra 160 t\u1ea5n t\u1ed5ng c\u1ed9ng. Nh\u01b0ng m\u00e1y nh\u1eadn th\u1ea5y 40 T\u1ea4N TR\u00caN M\u1ed8T FOOT<\/strong> \u0111\u01b0\u1ee3c d\u1ed3n g\u1ea7n cu\u1ed1i b\u00e0n \u00e9p. Th\u00e9p b\u1ecb bi\u1ebfn d\u1ea1ng. V\u00e0 n\u00f3 kh\u00f4ng bao gi\u1edd h\u1ed3i ph\u1ee5c.<\/p>\n\n\n\n M\u1ed9t m\u00e1y \u00e9p \u0111\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1 100 t\u1ea5n tr\u00ean 10 foot kh\u00f4ng ph\u1ea3i l\u00e0 m\u00e1y 100 t\u1ea5n \u1edf m\u1ecdi v\u1ecb tr\u00ed.<\/p>\n\n\n\n N\u00f3 l\u00e0 m\u1ed9t m\u00e1y 10 T\u1ea4N TR\u00caN M\u1ed8T FOOT<\/strong> \u2014 gi\u1ea3 \u0111\u1ecbnh r\u1eb1ng t\u1ea3i \u0111\u01b0\u1ee3c ph\u00e2n b\u1ed1 \u0111\u1ec1u d\u1ecdc theo chi\u1ec1u d\u00e0i l\u00e0m vi\u1ec7c.<\/p>\n\n\n\n Gi\u1edd h\u00e3y l\u1ea5y m\u1ed9t chi ti\u1ebft d\u00e0i 2 foot v\u00e0 \u0111\u1eb7t n\u00f3 l\u1ec7ch 12 inch v\u1ec1 ph\u00eda b\u00ean tr\u00e1i. N\u1ebfu ph\u00e9p t\u00ednh c\u1ee7a b\u1ea1n b\u00e1o 25 T\u1ea4N TR\u00caN M\u1ed8T FOOT<\/strong>, b\u1ea1n \u0111ang y\u00eau c\u1ea7u ph\u1ea7n \u0111\u00f3 c\u1ee7a \u0111\u1ea7u \u00e9p v\u00e0 b\u00e0n ph\u1ea3i ch\u1ecbu 50 t\u1ea5n t\u1eadp trung trong m\u1ed9t v\u00f9ng r\u1ea5t nh\u1ecf. T\u00e1m foot c\u00f2n l\u1ea1i th\u00ec kh\u00f4ng l\u00e0m g\u00ec c\u1ea3.<\/p>\n\n\n\n \u0110\u00e1nh gi\u00e1 trong danh m\u1ee5c gi\u1ea3 \u0111\u1ecbnh t\u1ea3i \u0111\u01b0\u1ee3c ph\u00e2n b\u1ed1. C\u00e1c khung m\u00e1y \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf nh\u01b0 nh\u1eefng c\u00e2y c\u1ea7u \u2014 t\u1ea3i tr\u1ecdng \u0111\u01b0\u1ee3c d\u00e0n \u0111\u1ec1u d\u1ecdc theo nh\u1ecbp. N\u1ebfu b\u1ea1n t\u1eadp trung n\u00f3, m\u00f4 men u\u1ed1n \u1edf ph\u1ea7n \u0111\u00f3 s\u1ebd t\u0103ng \u0111\u1ed9t bi\u1ebfn. \u0110\u1ed9 v\u00f5ng kh\u00f4ng c\u00f2n tuy\u1ebfn t\u00ednh n\u1eefa. N\u00f3 tr\u1edf th\u00e0nh d\u1ea1ng h\u00ecnh h\u1ecdc.<\/p>\n\n\n\n V\u00e0 \u0111\u00e2y l\u00e0 n\u01a1i ng\u01b0\u1eddi v\u1eadn h\u00e0nh d\u1ec5 b\u1ecb \u0111\u00e1nh l\u1eeba: t\u1ed5ng T\u1ed4NG L\u1ef0C C\u00d3 S\u1eb4N<\/strong> c\u00f3 th\u1ec3 n\u1eb1m d\u01b0\u1edbi m\u1ee9c c\u1ef1c \u0111\u1ea1i c\u1ee7a m\u00e1y, nh\u01b0ng \u1ee9ng su\u1ea5t c\u1ee5c b\u1ed9 \u1ee8NG SU\u1ea4T<\/strong> \u2014 l\u1ef1c chia cho di\u1ec7n t\u00edch \u2014 v\u01b0\u1ee3t qu\u00e1 kh\u1ea3 n\u0103ng ch\u1ecbu \u0111\u1ef1ng c\u1ee7a \u0111o\u1ea1n \u0111\u1ea7u \u00e9p \u0111\u00f3.<\/p>\n\n\n\n T\u00f4i \u0111\u00e3 th\u1ea5y m\u1ed9t gi\u00e1 \u0111\u1ee1 ng\u1eafn b\u1eb1ng th\u00e9p kh\u00f4ng g\u1ec9, d\u00e0i ch\u01b0a t\u1edbi hai feet, v\u1eb7n v\u0129nh vi\u1ec5n v\u1ec1 ph\u00eda b\u00ean tr\u00e1i c\u1ee7a b\u00e0n \u00e9p ch\u1ec9 v\u00ec ng\u01b0\u1eddi v\u1eadn h\u00e0nh c\u0103n gi\u1eefa c\u00e1c ng\u00f3n tay c\u1ee7a thanh \u0111\u1ecbnh v\u1ecb ph\u00eda sau thay v\u00ec c\u0103n gi\u1eefa chi ti\u1ebft gia c\u00f4ng. M\u00e1y kh\u00f4ng v\u01b0\u1ee3t qu\u00e1 t\u1ed5ng T\u1ea2I TR\u1eccNG<\/strong>. N\u00f3 \u0111\u00e3 v\u01b0\u1ee3t qu\u00e1 l\u1ebd th\u01b0\u1eddng v\u1ec1 k\u1ebft c\u1ea5u.<\/p>\n\n\n\n V\u00ec v\u1eady, b\u1ea1n x\u00e1c minh nh\u01b0 sau:<\/p>\n\n\n\n N\u1ebfu nhu c\u1ea7u t\u1ea3i tr\u1ecdng m\u1ed7i foot c\u1ee7a b\u1ea1n v\u01b0\u1ee3t qu\u00e1 kh\u1ea3 n\u0103ng m\u1ed7i foot c\u1ee7a m\u00e1y t\u1ea1i v\u1ecb tr\u00ed \u0111\u00f3, b\u1ea1n kh\u00f4ng ph\u1ea3i \u201ch\u01a1i t\u00e1o b\u1ea1o.\u201d B\u1ea1n \u0111ang qu\u00e1 t\u1ea3i v\u1ec1 m\u1eb7t k\u1ebft c\u1ea5u.<\/p>\n\n\n\n Ngay c\u1ea3 khi c\u00e1c con s\u1ed1 c\u1ee7a b\u1ea1n h\u1ee3p l\u00fd tr\u00ean gi\u1ea5y, b\u1ea1n c\u0169ng kh\u00f4ng v\u1eadn h\u00e0nh m\u00e1y \u00e9p \u1edf m\u1ee9c 100\u202f% c\u00f4ng su\u1ea5t \u0111\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1 C\u00d4NG SU\u1ea4T<\/strong>.<\/p>\n\n\n\n B\u1ea1n c\u0169ng \u0111\u00e2u c\u00f3 \u00e9p \u0111\u1ed9ng c\u01a1 diesel \u0111\u1ebfn gi\u1edbi h\u1ea1n \u0111\u1ecf m\u1ed7i ca.<\/p>\n\n\n\n T\u1ea1i sao l\u1ea1i l\u00e0 80\u202f%? B\u1edfi v\u00ec c\u00f4ng th\u1ee9c c\u1ee7a b\u1ea1n kh\u00f4ng bi\u1ebft h\u1ebft m\u1ecdi th\u1ee9. N\u00f3 kh\u00f4ng t\u00ednh \u0111\u1ebfn h\u01b0\u1edbng s\u1ee3i kim lo\u1ea1i, \u0111\u1ed9 m\u00f2n khu\u00f4n, thay \u0111\u1ed5i ma s\u00e1t, bi\u1ebfn thi\u00ean nhi\u1ec7t \u0111\u1ed9 c\u1ee7a d\u1ea7u th\u1ee7y l\u1ef1c, ho\u1eb7c s\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa khu\u00f4n \u0111\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1 b\u1eb1ng t\u1ea5n ng\u1eafn tr\u00ean m\u1ed7i foot so v\u1edbi t\u1ea5n m\u00e9t theo m\u00e9t \u1edf g\u00f3c kh\u00e1c. M\u1ed9t khu\u00f4n \u0111\u01b0\u1ee3c ghi 60 trong m\u1ed9t danh m\u1ee5c kh\u00f4ng ph\u1ea3i l\u00fac n\u00e0o c\u0169ng m\u1ea1nh h\u01a1n khu\u00f4n ghi 46 trong danh m\u1ee5c kh\u00e1c tr\u1eeb khi b\u1ea1n quy \u0111\u1ed5i \u0111\u01a1n v\u1ecb v\u00e0 \u0111i\u1ec1u ki\u1ec7n \u0111\u00e1nh gi\u00e1.<\/p>\n\n\n\n C\u01a1 ch\u1ebf l\u00e0 th\u1ebf n\u00e0y: khi b\u1ea1n ti\u1ebfn g\u1ea7n \u0111\u1ebfn t\u1ea3i tr\u1ecdng khung t\u1ed1i \u0111a, \u0111\u1ed9 v\u00f5ng t\u0103ng theo c\u1ea5p s\u1ed1 kh\u00f4ng tuy\u1ebfn t\u00ednh. M\u1ed9t l\u1ef1c t\u0103ng nh\u1ecf t\u1ea1o ra bi\u1ebfn d\u1ea1ng k\u1ebft c\u1ea5u l\u1edbn h\u01a1n m\u1ed9t c\u00e1ch m\u1ea5t c\u00e2n \u0111\u1ed1i. \u0110\u00f3 l\u00e0 l\u00fac h\u1ec7 th\u1ed1ng b\u00f9 v\u00f5ng \u0111\u1ea1t gi\u1edbi h\u1ea1n. \u0110\u00f3 l\u00e0 l\u00fac ch\u1ed1t b\u1eaft \u0111\u1ea7u m\u00e0i m\u00f2n. \u0110\u00f3 l\u00e0 l\u00fac c\u00e1c v\u1ebft n\u1ee9t si\u00eau nh\u1ecf xu\u1ea5t hi\u1ec7n.<\/p>\n\n\n\n Gi\u1edd h\u00e3y th\u00eam ph\u01b0\u01a1ng ph\u00e1p u\u1ed1n.<\/p>\n\n\n\n U\u1ed1n gi\u00f3 \u1edf m\u1ee9c c\u01a1 b\u1ea3n? \u1ed4n \u2014 quy t\u1eafc 80\u202f% c\u00f3 l\u00fd. U\u1ed1n ch\u1ea1m \u0111\u00e1y c\u1ea7n l\u1ef1c g\u1ea5p 1,5 l\u1ea7n? Bi\u00ean \u0111\u1ed9 an to\u00e0n c\u1ee7a b\u1ea1n v\u1eeba thu h\u1eb9p. \u00c9p ch\u1eb7t c\u1ea7n l\u1ef1c g\u1ea5p 5 l\u1ea7n? Quy t\u1eafc 80\u202f% tr\u1edf n\u00ean v\u00f4 ngh\u0129a v\u00ec \u0111\u1ec9nh t\u1ea3i t\u1ea1i \u0111\u00e1y h\u00e0nh tr\u00ecnh c\u00f3 th\u1ec3 v\u01b0\u1ee3t qu\u00e1 m\u1ee9c \u0111\u00e1nh gi\u00e1 t\u1ee9c th\u00ec.<\/p>\n\n\n\n T\u00f4i \u0111\u00e3 t\u1eebng th\u1ea5y m\u1ed9t ng\u01b0\u1eddi v\u1eadn h\u00e0nh \u00e9p ch\u1ea1m \u0111\u00e1y m\u1ed9t chi ti\u1ebft \u0111\u00e3 \u0111\u01b0\u1ee3c u\u1ed1n gi\u00f3 c\u1ea3 tu\u1ea7n ch\u1ec9 v\u00ec \u201cg\u00f3c b\u1ecb l\u1ec7ch.\u201d S\u1ef1 thay \u0111\u1ed5i ph\u01b0\u01a1ng ph\u00e1p \u0111\u00f3 \u0111\u00e3 \u0111\u1ea9y L\u1ef0C Y\u00caU C\u1ea6U<\/strong> v\u01b0\u1ee3t qu\u00e1 m\u1ee9c \u0111\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1 C\u00d4NG SU\u1ea4T<\/strong> m\u1eb7c d\u00f9 ph\u00e9p t\u00ednh u\u1ed1n kh\u00f4ng kh\u00ed ban \u0111\u1ea7u l\u00e0 an to\u00e0n. C\u00e1c ph\u1edbt c\u1ee7a p\u00edt-t\u00f4ng kh\u00f4ng h\u1ecfng h\u00f4m \u0111\u00f3. Khung m\u00e1y b\u1ecb bi\u1ebfn d\u1ea1ng theo th\u1eddi gian. S\u00e1u th\u00e1ng sau, ch\u00fang t\u00f4i ph\u1ea3i ch\u00eam quanh m\u1ed9t ch\u1ed7 cong v\u0129nh vi\u1ec5n.<\/p>\n\n\n\n Bi\u00ean \u0111\u1ed9 an to\u00e0n kh\u00f4ng ph\u1ea3i l\u00e0 h\u00e8n nh\u00e1t. \u0110\u00f3 l\u00e0 d\u1ef1 ph\u00f2ng cho nh\u1eefng g\u00ec c\u00f4ng th\u1ee9c c\u1ee7a b\u1ea1n kh\u00f4ng th\u1ec3 th\u1ea5y.<\/p>\n\n\n\n \u0110\u00e2y l\u00e0 l\u00fac \u1ea9n d\u1ee5 kh\u1ea9u s\u00fang n\u1ea1p \u0111\u1ea1n tr\u1edf n\u00ean th\u1ef1c t\u1ebf.<\/p>\n\n\n\n C\u00f4ng th\u1ee9c cho b\u1ea1n bi\u1ebft \u0111i\u1ec1u g\u00ec *n\u00ean* x\u1ea3y ra. C\u00fa \u0111\u00e1nh \u0111\u1ea7u ti\u00ean cho b\u1ea1n bi\u1ebft \u0111i\u1ec1u g\u00ec *\u0111ang* x\u1ea3y ra.<\/p>\n\n\n\n B\u1ea1n x\u00e1c minh theo t\u1eebng giai \u0111o\u1ea1n:<\/p>\n\n\n\n N\u1ebfu t\u1ea3i tr\u1ecdng t\u0103ng nhanh h\u01a1n so v\u1edbi d\u1ef1 \u0111o\u00e1n theo \u0110\u01af\u1edcNG CONG L\u1ef0C<\/strong>, h\u00e3y d\u1eebng l\u1ea1i. C\u00f3 \u0111i\u1ec1u g\u00ec \u0111\u00f3 \u0111\u00e3 thay \u0111\u1ed5i \u2014 c\u00f3 th\u1ec3 gi\u00e1 tr\u1ecb th\u1ef1c t\u1ebf \u0110\u1ed8 B\u1ec0N K\u00c9O<\/strong> cao h\u01a1n th\u00f4ng s\u1ed1, c\u00f3 th\u1ec3 \u0110\u1ed8 M\u1ede KHU\u00d4N<\/strong> th\u1ef1c t\u1ebf nh\u1ecf h\u01a1n do m\u00e0i m\u00f2n, ho\u1eb7c c\u00f3 th\u1ec3 b\u1ea1n \u0111ang v\u00f4 t\u00ecnh ch\u1ea1m \u0111\u00e1y.<\/p>\n\n\n\n C\u00e1c c\u1ea3m bi\u1ebfn t\u1ea3i k\u1ef9 thu\u1eadt s\u1ed1 ng\u00e0y nay s\u1ebd hi\u1ec3n th\u1ecb cho b\u1ea1n nh\u1eefng sai l\u1ec7ch m\u00e0 bi\u1ec3u \u0111\u1ed3 c\u0169 kh\u00f4ng th\u1ec3. N\u1ebfu nhu c\u1ea7u t\u00ednh to\u00e1n c\u1ee7a b\u1ea1n l\u00e0 20 T\u1ea4N TR\u00caN M\u1ed8T FOOT<\/strong> v\u00e0 m\u00e1y b\u00e1o 26, t\u0103ng m\u1ea1nh \u1edf v\u00e0i \u0111\u1ed9 cu\u1ed1i, th\u00ec \u0111\u00f3 kh\u00f4ng ph\u1ea3i l\u00e0 \u201cg\u1ea7n \u0111\u1ee7\u201d. \u0110\u00f3 l\u00e0 sai l\u1ec7ch 30%.<\/p>\n\n\n\n T\u00f4i \u0111\u00e3 ph\u00e1 h\u1ecfng m\u1ed9t b\u1ed9 ch\u00e0y ph\u00e2n \u0111o\u1ea1n \u0111\u1ea7u s\u1ef1 nghi\u1ec7p v\u00ec t\u00f4i tin v\u00e0o con s\u1ed1 h\u01a1n l\u00e0 \u00e2m thanh. \u0110\u1ed3ng h\u1ed3 \u00e1p su\u1ea5t cho bi\u1ebft \u0111\u01b0\u1eddng cong t\u1ea3i d\u1ed1c h\u01a1n b\u00ecnh th\u01b0\u1eddng. T\u00f4i v\u1eabn c\u1ed1 \u00e9p. Ph\u00e2n \u0111o\u1ea1n n\u1ee9t \u1edf r\u00e3nh then. Ph\u00e9p t\u00ednh \u0111\u00fang cho u\u1ed1n kh\u00f4ng kh\u00ed. M\u00e1y b\u1ecb ch\u1ea1m \u0111\u00e1y v\u00ec ch\u1eb7n \u0111\u1ed9 s\u00e2u l\u1ec7ch ch\u1ec9 m\u1ed9t ch\u00fat.<\/p>\n\n\n\n \u0110\u00e2y l\u00e0 \u0111i\u1ec1u duy nh\u1ea5t b\u1ea1n c\u1ea7n ghi nh\u1edb:<\/p>\n\n\n\n C\u00f4ng th\u1ee9c kh\u00f4ng ph\u1ea3i l\u00e0 th\u1ea9m quy\u1ec1n t\u1ed1i cao. N\u00f3 ch\u1ec9 l\u00e0 m\u1ed9t gi\u1ea3 thuy\u1ebft.<\/p>\n\n\n\n M\u00e1y m\u00f3c \u2014 x\u1ebfp h\u1ea1ng khung, gi\u1edbi h\u1ea1n m\u1ed7i foot, ph\u1ea3n h\u1ed3i t\u1ea3i tr\u1ecdng th\u1ef1c \u2014 ch\u00ednh l\u00e0 th\u00ed nghi\u1ec7m. N\u1ebfu hai y\u1ebfu t\u1ed1 \u0111\u00f3 m\u00e2u thu\u1eabn, b\u1ea1n tin v\u00e0o th\u00e9p h\u01a1n l\u00e0 l\u00fd thuy\u1ebft.<\/p>\n\n\n\n Khu\u00f4n d\u01b0\u1edbi n\u1ee9t ra v\u1edbi \u00e2m thanh vang l\u00ean nh\u01b0 ti\u1ebfng s\u00fang n\u1ed5. T\u1ea5m th\u00e9p d\u00e0y m\u1ed9t ph\u1ea7n t\u01b0 inch. Kh\u00f4ng c\u00f3 g\u00ec \u0111\u1eb7c bi\u1ec7t. Ng\u01b0\u1eddi v\u1eadn h\u00e0nh \u0111\u00e3 t\u00ednh to\u00e1n \u1edf m\u1eb7t sau c\u1ee7a t\u1edd thi\u1ebft l\u1eadp: 575 \u00d7 T\u00b2 \u00d7 L. M\u00e1y \u0111\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1 l\u00e0 an to\u00e0n. C\u00f4ng vi\u1ec7c l\u1ebd ra ph\u1ea3i \u0111\u01a1n gi\u1ea3n, b\u00ecnh th\u01b0\u1eddng. Th\u1ebf nh\u01b0ng thay v\u00e0o \u0111\u00f3, ch\u00fang t\u00f4i l\u1ea1i \u0111ang qu\u00e9t d\u1ecdn nh\u1eefng m\u1ea3nh cacbua v\u00e0 gi\u1ea3i th\u00edch v\u1edbi b\u1ed9 ph\u1eadn k\u1ebf to\u00e1n l\u00fd do v\u00ec sao m\u1ed9t \u201cc\u00fa u\u1ed1n \u0111\u01a1n gi\u1ea3n\u201d [\u2026]<\/p>","protected":false},"author":3,"featured_media":1313,"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-1309","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\/1309","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=1309"}],"version-history":[{"count":1,"href":"https:\/\/cn-hawe.com\/vi\/wp-json\/wp\/v2\/posts\/1309\/revisions"}],"predecessor-version":[{"id":1314,"href":"https:\/\/cn-hawe.com\/vi\/wp-json\/wp\/v2\/posts\/1309\/revisions\/1314"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cn-hawe.com\/vi\/wp-json\/wp\/v2\/media\/1313"}],"wp:attachment":[{"href":"https:\/\/cn-hawe.com\/vi\/wp-json\/wp\/v2\/media?parent=1309"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cn-hawe.com\/vi\/wp-json\/wp\/v2\/categories?post=1309"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cn-hawe.com\/vi\/wp-json\/wp\/v2\/tags?post=1309"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}Quy t\u1eafc 575: Nh\u1eefng gi\u1ea3 \u0111\u1ecbnh th\u1ef1c s\u1ef1 c\u1ee7a c\u00f4ng th\u1ee9c ti\u00eau chu\u1ea9n (th\u00e9p th\u01b0\u1eddng, u\u1ed1n kh\u00f4ng ch\u1ea1m, khu\u00f4n 8 l\u1ea7n)<\/h3>\n\n\n\n
![\"Nh\u1eefng](\"https:\/\/cn-hawe.com\/wp-content\/uploads\/2026\/03\/What-the-standard-formula-actually-assumes-mild-steel-air-bending-8x-die_w1200.jpg\")
<\/figure>\n\n\n\nT\u1ea1i sao \u201c\u0111\u1ed9 d\u00e0y \u00d7 chi\u1ec1u d\u00e0i\u201d nghe c\u00f3 v\u1ebb \u0111\u1ee7 \u2014 nh\u01b0ng \u00e2m th\u1ea7m b\u1ecf qua nh\u1eefng y\u1ebfu t\u1ed1 l\u1ef1c ch\u00ednh<\/h3>\n\n\n\n
![\"T\u1ea1i](\"https:\/\/cn-hawe.com\/wp-content\/uploads\/2026\/03\/Why-thickness-\u00d7-length-feels-sufficient_w1200.jpg\")
<\/figure>\n\n\n\nChi ph\u00ed \u1ea9n c\u1ee7a nh\u1eefng \u01b0\u1edbc l\u01b0\u1ee3ng \u201cx\u1ea5p x\u1ec9\u201d: Khu\u00f4n n\u1ee9t, m\u00e1y ng\u1eebng ho\u1ea1t \u0111\u1ed9ng, v\u00e0 ph\u1ebf ph\u1ea9m<\/h3>\n\n\n\n
![\"Chi](\"https:\/\/cn-hawe.com\/wp-content\/uploads\/2026\/03\/Cracked-dies-stalled-machines-and-scrapped-parts_w1200.jpg\")
<\/figure>\n\n\n\nV\u1eadt l\u00fd c\u1ee7a l\u1ef1c c\u1ea3n: Ba bi\u1ebfn s\u1ed1 c\u00f3 th\u1ec3 l\u00e0m l\u1ec7ch l\u1ef1c ch\u1ea5n c\u1ee7a b\u1ea1n<\/h2>\n\n\n\n
Gi\u1edbi h\u1ea1n b\u1ec1n k\u00e9o c\u1ee7a v\u1eadt li\u1ec7u: V\u00ec sao th\u00e9p kh\u00f4ng g\u1ec9 kh\u00f4ng ch\u1ec9 \u201cn\u1eb7ng h\u01a1n\u201d th\u00e9p carbon (v\u00e0 t\u1ea1i sao gi\u00e1 tr\u1ecb c\u01a1 s\u1edf l\u1ea1i d\u1ec5 g\u00e2y hi\u1ec3u l\u1ea7m)<\/h3>\n\n\n\n
Khe m\u1edf V-Die: Quy t\u1eafc 8:1 v\u00e0 s\u1ef1 t\u0103ng \u0111\u1ed9t bi\u1ebfn theo c\u1ea5p s\u1ed1 nh\u00e2n c\u1ee7a l\u1ef1c khi b\u1ea1n thu nh\u1ecf khu\u00f4n<\/h3>\n\n\n\n
Ph\u01b0\u01a1ng ph\u00e1p u\u1ed1n: U\u1ed1n b\u1eb1ng kh\u00f4ng kh\u00ed so v\u1edbi \u00e9p s\u00e1t \u0111\u00e1y so v\u1edbi d\u1eadp c\u1ee9ng (t\u1ea1i sao l\u1ef1c l\u1ea1i nh\u00e2n l\u00ean 4 \u0111\u1ebfn 8 l\u1ea7n)<\/h3>\n\n\n\n
Gi\u1ea3i m\u00e3 C\u00f4ng Th\u1ee9c Th\u1ed1ng Nh\u1ea5t: X\u00e2y d\u1ef1ng ph\u00e9p t\u00ednh t\u1eeb c\u01a1 ch\u1ebf<\/h2>\n\n\n\n
Ph\u01b0\u01a1ng tr\u00ecnh c\u1ed1t l\u00f5i: Chuy\u1ec3n \u0111\u1ed5i \u0111\u1eb7c t\u00ednh v\u1eadt li\u1ec7u v\u00e0 h\u00ecnh h\u1ecdc d\u1ee5ng c\u1ee5 th\u00e0nh \u0111\u01a1n v\u1ecb t\u1ea5n<\/h3>\n\n\n\n
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H\u1eb1ng s\u1ed1 H\u1ec7 m\u00e9t so v\u1edbi H\u1ec7 Anh: Chuy\u1ec3n \u0111\u1ed5i m\u00e0 kh\u00f4ng m\u1ea5t \u0111\u1ed9 ch\u00ednh x\u00e1c<\/h3>\n\n\n\n
\u00c1p d\u1ee5ng H\u1ec7 S\u1ed1 Hi\u1ec7u Ch\u1ec9nh V\u1eadt Li\u1ec7u (MCF) m\u00e0 kh\u00f4ng ph\u1ea3i ph\u1ecfng \u0111o\u00e1n<\/h3>\n\n\n\n
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T\u1eebng b\u01b0\u1edbc: T\u00ednh to\u00e1n t\u1ea3i tr\u1ecdng cho c\u00e1c \u0111\u01b0\u1eddng u\u1ed1n trong th\u1ef1c t\u1ebf<\/h2>\n\n\n\n
V\u00ed d\u1ee5 1: C\u01a1 b\u1ea3n (Th\u00e9p nh\u1eb9 10 gauge, u\u1ed1n 48\u2033, khu\u00f4n 8x)<\/h3>\n\n\n\n
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V\u00ed d\u1ee5 2: H\u1ec7 s\u1ed1 nh\u00e2n (C\u00f9ng chi ti\u1ebft b\u1eb1ng th\u00e9p kh\u00f4ng g\u1ec9 tr\u00ean khu\u00f4n V nh\u1ecf h\u01a1n)<\/h3>\n\n\n\n
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V\u00ed d\u1ee5 3: V\u00f9ng nguy hi\u1ec3m (C\u00f9ng h\u00ecnh d\u1ea1ng, nh\u01b0ng \u00e9p \u0111\u00e1y thay v\u00ec \u00e9p kh\u00f4ng kh\u00ed)<\/h3>\n\n\n\n
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N\u01a1i To\u00e1n H\u1ecdc L\u00fd Thuy\u1ebft B\u1ecb Ph\u00e1 V\u1ee1: Nh\u1eefng Bi\u1ebfn S\u1ed1 V\u00f4 H\u00ecnh<\/h2>\n\n\n\n
M\u00e0i M\u00f2n D\u1ee5ng C\u1ee5: C\u00e1ch m\u1ed9t khu\u00f4n c\u00f9n \u00e2m th\u1ea7m l\u00e0m t\u0103ng nhu c\u1ea7u t\u1ea3i c\u1ee7a b\u1ea1n th\u00eam 15-30%<\/h3>\n\n\n\n
T\u1ea3i t\u1eadp trung: T\u1ea1i sao v\u1ea5n \u0111\u1ec1 \u201cch\u00e0y nh\u1ecdn\u201d l\u1ea1i v\u01b0\u1ee3t qua kh\u1ea3 n\u0103ng ch\u1ecbu t\u1ea3i t\u1ed5ng c\u1ee7a m\u00e1y<\/h3>\n\n\n\n
H\u01b0\u1edbng h\u1ea1t v\u00e0 tr\u00ed nh\u1edb v\u1eadt li\u1ec7u: Nh\u1eefng bi\u1ebfn s\u1ed1 khi\u1ebfn c\u00e1c c\u00f4ng c\u1ee5 t\u00ednh to\u00e1n ti\u00eau chu\u1ea9n tr\u1edf n\u00ean v\u00f4 d\u1ee5ng<\/h3>\n\n\n\n
Ki\u1ec3m tra th\u1ef1c t\u1ebf cho ng\u01b0\u1eddi v\u1eadn h\u00e0nh: X\u00e1c nh\u1eadn ph\u00e9p t\u00ednh tr\u01b0\u1edbc khi nh\u1ea5n b\u00e0n \u0111\u1ea1p<\/h2>\n\n\n\n
T\u1ea3i tr\u1ecdng t\u00ednh theo t\u1ea5n tr\u00ean m\u1ed7i foot so v\u1edbi kh\u1ea3 n\u0103ng ch\u1ecbu t\u1ea3i c\u1ea3 b\u00e0n: B\u1ea1n c\u00f3 \u0111ang qu\u00e1 t\u1ea3i t\u1ea1i m\u1ed9t ph\u1ea7n c\u1ee5 th\u1ec3 c\u1ee7a \u0111\u1ea7u \u00e9p kh\u00f4ng?<\/h3>\n\n\n\n
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T\u00ednh bi\u00ean \u0111\u1ed9 an to\u00e0n: T\u1ea1i sao b\u1ea1n kh\u00f4ng bao gi\u1edd n\u00ean v\u1eadn h\u00e0nh v\u01b0\u1ee3t qu\u00e1 80\u202f% c\u00f4ng su\u1ea5t<\/h3>\n\n\n\n
Giao th\u1ee9c \u201c\u0110\u00f2n \u0111\u1ea7u ti\u00ean\u201d: Khi n\u00e0o n\u00ean tin ph\u1ea3n h\u1ed3i c\u1ee7a m\u00e1y h\u01a1n l\u00e0 c\u00f4ng th\u1ee9c.<\/h3>\n\n\n\n
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T\u00e0i nguy\u00ean li\u00ean quan v\u00e0 c\u00e1c b\u01b0\u1edbc ti\u1ebfp theo<\/h2>\n\n\n\n
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