{"id":2490,"date":"2025-09-30T15:05:39","date_gmt":"2025-09-30T15:05:39","guid":{"rendered":"https:\/\/productionscrews.com\/"},"modified":"2025-09-30T15:05:39","modified_gmt":"2025-09-30T15:05:39","slug":"essential-guide-to-wire-drawing-from-metal-rod-to-precision-wire","status":"publish","type":"post","link":"https:\/\/productionscrews.com\/vi\/essential-guide-to-wire-drawing-from-metal-rod-to-precision-wire\/","title":{"rendered":"H\u01b0\u1edbng D\u1eabn Thi\u1ebft Y\u1ebfu v\u1ec1 K\u00e9o D\u00e2y: T\u1eeb Thanh Kim Lo\u1ea1i \u0111\u1ebfn D\u00e2y Ch\u00ednh X\u00e1c"},"content":{"rendered":"

C\u00e1ch S\u1ea3n Xu\u1ea5t D\u00e2y Kim Lo\u1ea1i: T\u00ecm Hi\u1ec3u Quy Tr\u00ecnh K\u00e9o D\u00e2y<\/h2>\n

B\u00e0i vi\u1ebft n\u00e0y kh\u00f4ng ch\u1ec9 gi\u1ea3i th\u00edch \u0111\u01a1n gi\u1ea3n v\u1ec1 qu\u00e1 tr\u00ecnh k\u00e9o d\u00e2y m\u00e0 c\u00f2n cung c\u1ea5p cho b\u1ea1n s\u1ef1 hi\u1ec3u bi\u1ebft k\u1ef9 thu\u1eadt \u0111\u1ea7y \u0111\u1ee7. Ch\u00fang ta s\u1ebd kh\u00e1m ph\u00e1 khoa h\u1ecdc, v\u1eadt li\u1ec7u v\u00e0 c\u00e1c b\u01b0\u1edbc quy tr\u00ecnh bi\u1ebfn m\u1ed9t thanh kim lo\u1ea1i d\u00e0y th\u00e0nh d\u00e2y m\u1ecfng. \u0110\u1ed1i v\u1edbi c\u00e1c k\u1ef9 s\u01b0 v\u00e0 nh\u00e0 khoa h\u1ecdc, vi\u1ec7c hi\u1ec3u nh\u1eefng ki\u1ebfn th\u1ee9c c\u01a1 b\u1ea3n n\u00e0y kh\u00f4ng ch\u1ec9 \u0111\u1ec3 h\u1ecdc h\u1ecfi; n\u00f3 l\u00e0 n\u1ec1n t\u1ea3ng \u0111\u1ec3 c\u1ea3i thi\u1ec7n quy tr\u00ecnh, ki\u1ec3m so\u00e1t ch\u1ea5t l\u01b0\u1ee3ng v\u00e0 t\u1ea1o ra nh\u1eefng \u0111\u1ed5i m\u1edbi m\u1edbi. Ch\u00fang ta s\u1ebd chia nh\u1ecf nh\u1eefng \u00fd t\u01b0\u1edfng ch\u00ednh v\u1ec1 bi\u1ebfn d\u1ea1ng d\u1ebbo, v\u1ed1n l\u00e0 n\u1ec1n t\u1ea3ng c\u1ee7a to\u00e0n b\u1ed9 quy tr\u00ecnh. Sau \u0111\u00f3, ch\u00fang ta s\u1ebd xem x\u00e9t chi ti\u1ebft c\u00f4ng c\u1ee5 quan tr\u1ecdng nh\u1ea5t: khu\u00f4n k\u00e9o, nghi\u00ean c\u1ee9u h\u00ecnh d\u1ea1ng v\u00e0 v\u1eadt li\u1ec7u c\u1ee7a n\u00f3. Sau \u0111\u00f3, ch\u00fang ta s\u1ebd \u0111i\u1ec1u tra c\u00e1ch c\u00e1c c\u00e0i \u0111\u1eb7t quy tr\u00ecnh ch\u00ednh\u2014ch\u1eb3ng h\u1ea1n nh\u01b0 t\u1ed1c \u0111\u1ed9, \u0111\u1ed9 gi\u1ea3m v\u00e0 nhi\u1ec7t \u0111\u1ed9\u2014ph\u1ed1i h\u1ee3p v\u1edbi nhau \u0111\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn s\u1ea3n ph\u1ea9m cu\u1ed1i c\u00f9ng. M\u1ed9t ph\u1ea7n l\u1edbn trong ph\u00e2n t\u00edch c\u1ee7a ch\u00fang ta s\u1ebd t\u1eadp trung v\u00e0o c\u00e1ch v\u1eadt li\u1ec7u thay \u0111\u1ed5i b\u00ean trong, \u0111\u1eb7c bi\u1ec7t l\u00e0 t\u00e1c \u0111\u1ed9ng c\u1ee7a bi\u1ebfn c\u1ee9ng ngu\u1ed9i v\u00e0 kh\u1ea3 n\u0103ng ph\u1ee5c h\u1ed3i c\u1ee7a \u1ee7. Ch\u00fang ta c\u0169ng s\u1ebd tr\u00ecnh b\u00e0y m\u1ed9t c\u00e1i nh\u00ecn chuy\u00ean nghi\u1ec7p v\u1ec1 l\u00fd thuy\u1ebft b\u00f4i tr\u01a1n, chuy\u1ec3n t\u1eeb ch\u1ee9c n\u0103ng c\u01a1 b\u1ea3n c\u1ee7a n\u00f3 sang c\u01a1 ch\u1ebf c\u1ee7a m\u00e0ng ch\u1ea5t l\u1ecfng. Cu\u1ed1i c\u00f9ng, ch\u00fang ta s\u1ebd k\u1ebft h\u1ee3p ki\u1ebfn th\u1ee9c n\u00e0y v\u00e0o m\u1ed9t h\u01b0\u1edbng d\u1eabn th\u1ef1c t\u1ebf<\/a> \u0111\u1ec3 t\u00ecm ra nguy\u00ean nh\u00e2n g\u1ed1c r\u1ec5 c\u1ee7a c\u00e1c v\u1ea5n \u0111\u1ec1 d\u00e2y ph\u1ed5 bi\u1ebfn. C\u00e1ch ti\u1ebfp c\u1eadn ho\u00e0n ch\u1ec9nh n\u00e0y \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 cung c\u1ea5p chi\u1ec1u s\u00e2u k\u1ef9 thu\u1eadt c\u1ea7n thi\u1ebft cho s\u1ef1 l\u00e0m ch\u1ee7 quy tr\u00ecnh th\u1ef1c s\u1ef1.<\/p>\n

C\u00e1ch Kim Lo\u1ea1i Thay \u0110\u1ed5i H\u00ecnh D\u1ea1ng<\/h2>\n

\u0110\u1ec3 ph\u00e2n t\u00edch k\u1ef9 thu\u1eadt qu\u00e1 tr\u00ecnh k\u00e9o d\u00e2y, tr\u01b0\u1edbc ti\u00ean ch\u00fang ta ph\u1ea3i hi\u1ec3u c\u00e1c nguy\u00ean t\u1eafc c\u01a1 b\u1ea3n c\u1ee7a bi\u1ebfn d\u1ea1ng d\u1ebbo trong kim lo\u1ea1i d\u1ec5 u\u1ed1n<\/a>. \u0110\u00e2y l\u00e0 s\u1ef1 thay \u0111\u1ed5i h\u00ecnh d\u1ea1ng v\u0129nh vi\u1ec5n x\u1ea3y ra khi m\u1ed9t v\u1eadt li\u1ec7u tr\u1ea3i qua \u1ee9ng su\u1ea5t v\u01b0\u1ee3t qu\u00e1 gi\u1edbi h\u1ea1n \u0111\u00e0n h\u1ed3i c\u1ee7a n\u00f3. Kh\u00f4ng gi\u1ed1ng nh\u01b0 bi\u1ebfn d\u1ea1ng \u0111\u00e0n h\u1ed3i, n\u01a1i v\u1eadt li\u1ec7u tr\u1edf l\u1ea1i h\u00ecnh d\u1ea1ng ban \u0111\u1ea7u khi lo\u1ea1i b\u1ecf t\u1ea3i tr\u1ecdng, bi\u1ebfn d\u1ea1ng d\u1ebbo li\u00ean quan \u0111\u1ebfn vi\u1ec7c s\u1eafp x\u1ebfp l\u1ea1i c\u1ea5u tr\u00fac nguy\u00ean t\u1eed b\u00ean trong v\u1eadt li\u1ec7u. K\u00e9o d\u00e2y l\u00e0 m\u1ed9t \u1ee9ng d\u1ee5ng c\u00f3 ki\u1ec3m so\u00e1t c\u1ee7a nguy\u00ean t\u1eafc n\u00e0y, s\u1eed d\u1ee5ng l\u1ef1c k\u00e9o \u0111\u1ec3 t\u1ea1o ra s\u1ef1 gi\u1ea3m di\u1ec7n t\u00edch m\u1eb7t c\u1eaft ngang mong mu\u1ed1n v\u00e0 v\u0129nh vi\u1ec5n. To\u00e0n b\u1ed9 quy tr\u00ecnh ph\u1ee5 thu\u1ed9c v\u00e0o kh\u1ea3 n\u0103ng qu\u1ea3n l\u00fd ch\u00ednh x\u00e1c c\u00e1c \u1ee9ng su\u1ea5t t\u00e1c d\u1ee5ng l\u00ean ph\u00f4i, gi\u1eef ch\u00fang tr\u00ean \u0111i\u1ec3m ch\u1ea3y c\u1ee7a v\u1eadt li\u1ec7u nh\u01b0ng an to\u00e0n d\u01b0\u1edbi \u0111\u1ed9 b\u1ec1n k\u00e9o cu\u1ed1i c\u00f9ng c\u1ee7a n\u00f3 \u0111\u1ec3 tr\u00e1nh b\u1ecb \u0111\u1ee9t.<\/p>\n

\"d\u00e2y,<\/p>\n

\u1ee8ng Su\u1ea5t, Bi\u1ebfn D\u1ea1ng v\u00e0 Gi\u1edbi H\u1ea1n Ch\u1ea3y<\/h3>\n

M\u1ed1i quan h\u1ec7 gi\u1eefa \u1ee9ng su\u1ea5t v\u00e0 bi\u1ebfn d\u1ea1ng l\u00e0 trung t\u00e2m \u0111\u1ec3 hi\u1ec3u h\u00e0nh vi c\u1ee7a v\u1eadt li\u1ec7u. \u1ee8ng su\u1ea5t k\u00e9o l\u00e0 th\u01b0\u1edbc \u0111o l\u1ef1c b\u00ean trong t\u00e1c d\u1ee5ng l\u00ean v\u1eadt li\u1ec7u tr\u00ean m\u1ed9t \u0111\u01a1n v\u1ecb di\u1ec7n t\u00edch, v\u1ec1 c\u01a1 b\u1ea3n l\u00e0 l\u1ef1c k\u00e9o t\u00e1c d\u1ee5ng l\u00ean d\u00e2y. Bi\u1ebfn d\u1ea1ng l\u00e0 th\u01b0\u1edbc \u0111o bi\u1ebfn d\u1ea1ng ho\u1eb7c k\u00e9o d\u00e0i k\u1ebft qu\u1ea3 so v\u1edbi chi\u1ec1u d\u00e0i ban \u0111\u1ea7u c\u1ee7a d\u00e2y. Khi ch\u00fang ta v\u1ebd \u0111\u1ed3 th\u1ecb \u1ee9ng su\u1ea5t so v\u1edbi bi\u1ebfn d\u1ea1ng cho m\u1ed9t kim lo\u1ea1i d\u1ec5 u\u1ed1n, ch\u00fang ta th\u1ea5y m\u1ed9t \u0111\u01b0\u1eddng cong ri\u00eang bi\u1ec7t. Ban \u0111\u1ea7u, trong v\u00f9ng \u0111\u00e0n h\u1ed3i, \u1ee9ng su\u1ea5t t\u1ef7 l\u1ec7 thu\u1eadn v\u1edbi bi\u1ebfn d\u1ea1ng. N\u1ebfu t\u1ea3i tr\u1ecdng \u0111\u01b0\u1ee3c lo\u1ea1i b\u1ecf \u1edf \u0111\u00e2y, v\u1eadt li\u1ec7u s\u1ebd b\u1eadt tr\u1edf l\u1ea1i. Tuy nhi\u00ean, khi \u1ee9ng su\u1ea5t t\u00e1c d\u1ee5ng v\u01b0\u1ee3t qu\u00e1 gi\u1edbi h\u1ea1n b\u1ec1n ch\u1ea3y c\u1ee7a v\u1eadt li\u1ec7u, ch\u00fang ta s\u1ebd \u0111i v\u00e0o v\u00f9ng d\u1ebbo. T\u1ea1i th\u1eddi \u0111i\u1ec3m n\u00e0y, bi\u1ebfn d\u1ea1ng v\u0129nh vi\u1ec5n b\u1eaft \u0111\u1ea7u. S\u1ef1 tr\u01b0\u1ee3t b\u00ean trong m\u1ea1ng tinh th\u1ec3 c\u1ee7a kim lo\u1ea1i b\u1eaft \u0111\u1ea7u di chuy\u1ec3n v\u00e0 nh\u00e2n l\u00ean, v\u00e0 v\u1eadt li\u1ec7u s\u1ebd kh\u00f4ng tr\u1edf l\u1ea1i k\u00edch th\u01b0\u1edbc ban \u0111\u1ea7u c\u1ee7a n\u00f3. K\u00e9o d\u00e2y th\u00e0nh c\u00f4ng ho\u1ea1t \u0111\u1ed9ng ho\u00e0n to\u00e0n trong v\u00f9ng d\u1ebbo n\u00e0y.<\/p>\n

T\u00ednh To\u00e1n \u1ee8ng Su\u1ea5t K\u00e9o<\/h3>\n

\u1ee8ng su\u1ea5t l\u00fd thuy\u1ebft c\u1ea7n thi\u1ebft \u0111\u1ec3 k\u00e9o m\u1ed9t s\u1ee3i d\u00e2y, \u1ee9ng su\u1ea5t k\u00e9o (\u03c3d), c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u01b0\u1edbc t\u00ednh b\u1eb1ng c\u00e1c m\u00f4 h\u00ecnh c\u01a1 b\u1ea3n. M\u1ed9t ph\u01b0\u01a1ng ph\u00e1p ph\u1ed5 bi\u1ebfn, c\u00f3 ngu\u1ed3n g\u1ed1c t\u1eeb ph\u00e2n t\u00edch t\u1ea5m, cung c\u1ea5p m\u1ed9t ph\u00e9p t\u00ednh \u1ee9ng su\u1ea5t l\u00fd t\u01b0\u1edfng b\u1ecf qua ma s\u00e1t v\u00e0 c\u00f4ng th\u1eeba. C\u00f4ng th\u1ee9c \u0111\u01b0\u1ee3c bi\u1ec3u th\u1ecb nh\u01b0 sau:<\/p>\n

\u03c3d = Y_avg * ln(A\u2080\/A\u0192)<\/p>\n

\u1ede \u0111\u00e2y, Y_avg \u0111\u1ea1i di\u1ec7n cho \u1ee9ng su\u1ea5t th\u1ef1c trung b\u00ecnh c\u1ee7a v\u1eadt li\u1ec7u khi n\u00f3 bi\u1ebfn d\u1ea1ng qua khu\u00f4n. Thu\u1eadt ng\u1eef ln(A\u2080\/A\u0192) l\u00e0 bi\u1ebfn d\u1ea1ng th\u1ef1c (\u03b5), trong \u0111\u00f3 A\u2080 l\u00e0 di\u1ec7n t\u00edch m\u1eb7t c\u1eaft ngang ban \u0111\u1ea7u v\u00e0 A\u0192 l\u00e0 di\u1ec7n t\u00edch m\u1eb7t c\u1eaft ngang cu\u1ed1i c\u00f9ng. M\u1eb7c d\u00f9 c\u00f4ng th\u1ee9c n\u00e0y cung c\u1ea5p m\u1ed9t \u0111\u01b0\u1eddng c\u01a1 s\u1edf, nh\u01b0ng gi\u00e1 tr\u1ecb ch\u00ednh c\u1ee7a n\u00f3 l\u00e0 hi\u1ec3n th\u1ecb m\u1ed1i quan h\u1ec7 c\u1ed1t l\u00f5i: \u1ee9ng su\u1ea5t k\u00e9o c\u1ea7n thi\u1ebft t\u1ef7 l\u1ec7 thu\u1eadn v\u1edbi \u0111\u1ed9 b\u1ec1n c\u1ee7a v\u1eadt li\u1ec7u v\u00e0 \u0111\u1ed9 l\u1edbn c\u1ee7a bi\u1ebfn d\u1ea1ng (bi\u1ebfn d\u1ea1ng). \u0110\u1ed9 gi\u1ea3m di\u1ec7n t\u00edch l\u1edbn h\u01a1n ho\u1eb7c v\u1eadt li\u1ec7u m\u1ea1nh h\u01a1n s\u1ebd t\u1ef1 nhi\u00ean \u0111\u00f2i h\u1ecfi \u1ee9ng su\u1ea5t k\u00e9o cao h\u01a1n.<\/p>\n

Ma S\u00e1t v\u00e0 C\u00f4ng Th\u1eeba<\/h3>\n

Trong b\u1ea5t k\u1ef3 ho\u1ea1t \u0111\u1ed9ng k\u00e9o th\u1ef1c t\u1ebf n\u00e0o, \u1ee9ng su\u1ea5t k\u00e9o th\u1ef1c t\u1ebf cao h\u01a1n \u0111\u00e1ng k\u1ec3 so v\u1edbi \u1ee9ng su\u1ea5t l\u00fd t\u01b0\u1edfng \u0111\u01b0\u1ee3c t\u00ednh to\u00e1n \u1edf tr\u00ean. \u0110i\u1ec1u n\u00e0y l\u00e0 do hai y\u1ebfu t\u1ed1 ti\u00eau th\u1ee5 n\u0103ng l\u01b0\u1ee3ng b\u1ed5 sung. \u0110\u1ea7u ti\u00ean l\u00e0 ma s\u00e1t, l\u00e0 l\u1ef1c c\u1ea3n chuy\u1ec3n \u0111\u1ed9ng c\u1ee7a d\u00e2y khi n\u00f3 tr\u01b0\u1ee3t tr\u00ean b\u1ec1 m\u1eb7t c\u1ee7a khu\u00f4n k\u00e9o. L\u1ef1c ma s\u00e1t n\u00e0y ph\u1ee5 thu\u1ed9c v\u00e0o h\u1ec7 s\u1ed1 ma s\u00e1t gi\u1eefa d\u00e2y v\u00e0 v\u1eadt li\u1ec7u khu\u00f4n, \u00e1p su\u1ea5t ti\u1ebfp x\u00fac v\u00e0 hi\u1ec7u qu\u1ea3 c\u1ee7a ch\u1ea5t b\u00f4i tr\u01a1n. Y\u1ebfu t\u1ed1 th\u1ee9 hai l\u00e0 c\u00f4ng th\u1eeba. Thu\u1eadt ng\u1eef n\u00e0y m\u00f4 t\u1ea3 s\u1ef1 c\u1eaft b\u00ean trong kh\u00f4ng \u0111\u1ed3ng \u0111\u1ec1u x\u1ea3y ra b\u00ean trong v\u1eadt li\u1ec7u khi n\u00f3 b\u1ecb \u00e9p thay \u0111\u1ed5i h\u00ecnh d\u1ea1ng th\u00f4ng qua khu\u00f4n h\u00ecnh n\u00f3n. C\u00e1c kim lo\u1ea1i kh\u00f4ng ch\u1ea3y ho\u00e0n h\u1ea3o<\/a> m\u1ed9t c\u00e1ch tr\u01a1n tru; thay v\u00e0o \u0111\u00f3, n\u00f3 tr\u1ea3i qua nh\u1eefng bi\u1ebfn d\u1ea1ng b\u00ean trong ph\u1ee9c t\u1ea1p ti\u00eau th\u1ee5 n\u0103ng l\u01b0\u1ee3ng nh\u01b0ng kh\u00f4ng \u0111\u00f3ng g\u00f3p v\u00e0o s\u1ef1 thay \u0111\u1ed5i chi\u1ec1u d\u00e0i ho\u1eb7c \u0111\u01b0\u1eddng k\u00ednh. C\u00f4ng th\u1eeba ch\u1ecbu \u1ea3nh h\u01b0\u1edfng l\u1edbn b\u1edfi h\u00ecnh h\u1ecdc c\u1ee7a khu\u00f4n, \u0111\u1eb7c bi\u1ec7t l\u00e0 g\u00f3c ti\u1ebfp c\u1eadn c\u1ee7a n\u00f3.<\/p>\n

C\u1ea5u T\u1ea1o c\u1ee7a Khu\u00f4n K\u00e9o<\/h2>\n

M\u0169i khoan d\u00e2y l\u00e0 trung t\u00e2m c\u1ee7a qu\u00e1 tr\u00ecnh, l\u00e0 c\u00f4ng c\u1ee5 ch\u00ednh x\u00e1c ch\u1ecbu tr\u00e1ch nhi\u1ec7m v\u1ec1 k\u00edch th\u01b0\u1edbc cu\u1ed1i c\u00f9ng, h\u00ecnh d\u1ea1ng v\u00e0 ho\u00e0n thi\u1ec7n b\u1ec1 m\u1eb7t c\u1ee7a d\u00e2y. Thi\u1ebft k\u1ebf v\u00e0 th\u00e0nh ph\u1ea7n v\u1eadt li\u1ec7u c\u1ee7a n\u00f3 l\u00e0 c\u00e1c y\u1ebfu t\u1ed1 quy\u1ebft \u0111\u1ecbnh hi\u1ec7u qu\u1ea3 c\u1ee7a qu\u00e1 tr\u00ecnh, ch\u1ea5t l\u01b0\u1ee3ng d\u00e2y v\u00e0 chi ph\u00ed v\u1eadn h\u00e0nh. M\u1eb7c d\u00f9 tr\u00f4ng \u0111\u01a1n gi\u1ea3n, nh\u01b0ng h\u00ecnh h\u1ecdc b\u00ean trong c\u1ee7a m\u0169i khoan g\u1ed3m c\u00e1c v\u00f9ng ch\u1ee9c n\u0103ng ri\u00eang bi\u1ec7t, m\u1ed7i v\u00f9ng \u0111\u00f3ng vai tr\u00f2 c\u1ee5 th\u1ec3 trong qu\u00e1 tr\u00ecnh bi\u1ebfn \u0111\u1ed5i v\u1eadt li\u1ec7u. \u00c1p l\u1ef1c c\u1ef1c l\u1edbn v\u00e0 \u0111i\u1ec1u ki\u1ec7n m\u00e0i m\u00f2n trong m\u0169i khoan \u0111\u00f2i h\u1ecfi s\u1eed d\u1ee5ng c\u00e1c v\u1eadt li\u1ec7u \u0111\u1eb7c bi\u1ec7t, ch\u1ed1ng m\u00e0i m\u00f2n cao. Hi\u1ec3u r\u00f5 c\u1ea5u tr\u00fac c\u1ee7a m\u0169i khoan l\u00e0 n\u1ec1n t\u1ea3ng \u0111\u1ec3 x\u1eed l\u00fd s\u1ef1 c\u1ed1 v\u00e0 ki\u1ec3m so\u00e1t qu\u00e1 tr\u00ecnh.<\/p>\n

B\u1ed1n V\u00f9ng M\u0169i Khoan Quan Tr\u1ecdng<\/h3>\n

Khi d\u00e2y \u0111i qua m\u0169i khoan, n\u00f3 di chuy\u1ec3n qua b\u1ed1n v\u00f9ng ri\u00eang bi\u1ec7t, m\u1ed7i v\u00f9ng c\u00f3 ch\u1ee9c n\u0103ng c\u1ee5 th\u1ec3:<\/p>\n

    \n
  1. C\u1eeda v\u00e0o\/\u0110i\u1ec3m v\u00e0o: \u0110\u00e2y l\u00e0 \u0111i\u1ec3m v\u00e0o tr\u01a1n tru, cong c\u1ee7a m\u0169i khoan. Ch\u1ee9c n\u0103ng ch\u00ednh c\u1ee7a n\u00f3 l\u00e0 h\u01b0\u1edbng d\u1eabn d\u00e2y m\u1ed9t c\u00e1ch s\u1ea1ch s\u1ebd v\u00e0o v\u00f9ng gi\u1ea3m k\u00edch th\u01b0\u1edbc. N\u00f3 c\u0169ng ho\u1ea1t \u0111\u1ed9ng nh\u01b0 m\u1ed9t kho ch\u1ee9a, gi\u1eef v\u00e0 d\u1eabn d\u1ea7u b\u00f4i tr\u01a1n v\u00e0o m\u0169i khoan, \u0111i\u1ec1u n\u00e0y r\u1ea5t c\u1ea7n thi\u1ebft \u0111\u1ec3 thi\u1ebft l\u1eadp l\u1edbp m\u00e0ng b\u00f4i tr\u01a1n.<\/li>\n
  2. G\u00f3c Ti\u1ebfp C\u1eadn\/Gi\u1ea3m K\u00edch Th\u01b0\u1edbc: \u0110\u00e2y l\u00e0 ph\u1ea7n h\u00ecnh n\u00f3n n\u01a1i di\u1ec5n ra c\u00f4ng vi\u1ec7c k\u00e9o d\u00e2y th\u1ef1c s\u1ef1. \u0110\u01b0\u1eddng k\u00ednh c\u1ee7a d\u00e2y d\u1ea7n d\u1ea7n gi\u1ea3m khi n\u00f3 k\u00e9o qua v\u00f9ng n\u00e0y. G\u00f3c c\u1ee5 th\u1ec3 c\u1ee7a ph\u1ea7n n\u00f3n n\u00e0y, g\u1ecdi l\u00e0 g\u00f3c ti\u1ebfp c\u1eadn (\u03b1), l\u00e0 m\u1ed9t tham s\u1ed1 thi\u1ebft k\u1ebf quan tr\u1ecdng \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn l\u1ef1c k\u00e9o, c\u00f4ng vi\u1ec7c th\u1eeba v\u00e0 sinh nhi\u1ec7t.<\/li>\n
  3. \u1ed4 \u0111\u1ee1\/Land: \u0110\u00e2y l\u00e0 ph\u1ea7n ng\u1eafn, c\u00f3 c\u1ea1nh song song ngay sau g\u00f3c ti\u1ebfp c\u1eadn. M\u1ee5c \u0111\u00edch c\u1ee7a n\u00f3 l\u00e0 \u1ed5n \u0111\u1ecbnh d\u00e2y v\u00e0 \u0111\u1ea3m b\u1ea3o \u0111\u01b0\u1eddng k\u00ednh cu\u1ed1i c\u00f9ng c\u0169ng nh\u01b0 \u0111\u1ed9 tr\u00f2n ch\u00ednh x\u00e1c. Chi\u1ec1u d\u00e0i c\u1ee7a \u1ed5 \u0111\u1ee1 \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t c\u1ea9n th\u1eadn; qu\u00e1 d\u00e0i s\u1ebd t\u1ea1o ra ma s\u00e1t qu\u00e1 m\u1ee9c; qu\u00e1 ng\u1eafn c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn m\u00e0i m\u00f2n nhanh v\u00e0 m\u1ea5t ch\u00ednh x\u00e1c k\u00edch th\u01b0\u1edbc.<\/li>\n
  4. L\u00e0m gi\u1ea3m \u00e1p l\u1ef1c ph\u00eda sau: \u0110\u00e2y l\u00e0 v\u00f9ng tho\u00e1t h\u00ecnh n\u00f3n c\u00f3 g\u00f3c r\u1ed9ng h\u01a1n so v\u1edbi g\u00f3c ti\u1ebfp c\u1eadn. N\u00f3 cung c\u1ea5p l\u1ed1i tho\u00e1t r\u00f5 r\u00e0ng cho d\u00e2y \u0111\u00e3 ho\u00e0n thi\u1ec7n, ng\u0103n ng\u1eeba m\u0169i khoan l\u00e0m tr\u1ea7y x\u01b0\u1edbc ho\u1eb7c l\u00e0m x\u01b0\u1edbc b\u1ec1 m\u1eb7t d\u00e2y khi tho\u00e1t ra d\u01b0\u1edbi \u00e1p l\u1ef1c.<\/li>\n<\/ol>\n

    \"ng\u01b0\u1eddi<\/p>\n

    Khoa h\u1ecdc v\u1ec1 v\u1eadt li\u1ec7u m\u0169i khoan<\/h3>\n

    C\u00e1c v\u1eadt li\u1ec7u \u0111\u01b0\u1ee3c ch\u1ecdn<\/a> cho m\u0169i khoan k\u00e9o d\u00e2y ph\u1ea3i ch\u1ecbu \u0111\u1ef1ng m\u00f4i tr\u01b0\u1eddng kh\u1eafc nghi\u1ec7t \u0111\u1eb7c tr\u01b0ng b\u1edfi \u00e1p l\u1ef1c l\u1edbn, nhi\u1ec7t \u0111\u1ed9 cao v\u00e0 m\u00e0i m\u00f2n li\u00ean t\u1ee5c. L\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u l\u00e0 s\u1ef1 c\u00e2n b\u1eb1ng gi\u1eefa hi\u1ec7u su\u1ea5t, \u0111\u1ed9 b\u1ec1n v\u00e0 chi ph\u00ed, ph\u00f9 h\u1ee3p v\u1edbi \u1ee9ng d\u1ee5ng c\u1ee5 th\u1ec3. C\u00e1c lo\u1ea1i v\u1eadt li\u1ec7u ch\u00ednh \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng l\u00e0 h\u1ee3p kim carbide tungsten, kim c\u01b0\u01a1ng t\u1ed5ng h\u1ee3p \u0111a tinh th\u1ec3 v\u00e0 kim c\u01b0\u01a1ng t\u1ef1 nhi\u00ean, m\u1ed7i lo\u1ea1i mang \u0111\u1eb7c t\u00ednh ri\u00eang bi\u1ec7t.<\/p>\n

    B\u1ea3ng 1: Ph\u00e2n t\u00edch so s\u00e1nh v\u1eadt li\u1ec7u m\u0169i khoan d\u00e2y<\/h3>\n

    \u0110\u1ec3 h\u1ed7 tr\u1ee3 trong vi\u1ec7c l\u1ef1a ch\u1ecdn, ch\u00fang t\u00f4i c\u00f3 th\u1ec3 so s\u00e1nh c\u00e1c \u0111\u1eb7c \u0111i\u1ec3m ch\u00ednh c\u1ee7a c\u00e1c v\u1eadt li\u1ec7u m\u0169i khoan ph\u1ed5 bi\u1ebfn n\u00e0y. L\u1ef1a ch\u1ecdn ph\u1ee5 thu\u1ed9c v\u00e0o v\u1eadt li\u1ec7u d\u00e2y c\u1ea7n k\u00e9o, \u0111\u01b0\u1eddng k\u00ednh v\u00e0 ho\u00e0n thi\u1ec7n d\u00e2y y\u00eau c\u1ea7u, t\u1ed1c \u0111\u1ed9 k\u00e9o v\u00e0 c\u00e1c y\u1ebfu t\u1ed1 kinh t\u1ebf.<\/p>\n\n\n\n\n\n\n\n\n
    \u0110\u1eb7c \u0111i\u1ec3m<\/td>\nH\u1ee3p kim carbide tungsten (WC)<\/td>\nKim c\u01b0\u01a1ng Polycrystalline (PCD)<\/td>\nKim c\u01b0\u01a1ng t\u1ef1 nhi\u00ean<\/td>\n<\/tr>\n
    \u0110\u1ed9 c\u1ee9ng<\/strong><\/td>\nR\u1ea5t cao<\/td>\nC\u1ef1c cao<\/td>\nCao nh\u1ea5t<\/td>\n<\/tr>\n
    Ch\u1ed1ng m\u00e0i m\u00f2n<\/strong><\/td>\nT\u1ed1t \u0111\u1ebfn xu\u1ea5t s\u1eafc<\/td>\nV\u01b0\u1ee3t tr\u1ed9i<\/td>\nXu\u1ea5t s\u1eafc<\/td>\n<\/tr>\n
    \u0110\u1ed9 b\u1ec1n va \u0111\u1eadp<\/strong><\/td>\nCao (Ch\u1ed1ng v\u1ee1 n\u1ee9t)<\/td>\nTrung b\u00ecnh<\/td>\nTh\u1ea5p (D\u1ec5 v\u1ee1)<\/td>\n<\/tr>\n
    \u1ee8ng d\u1ee5ng \u0111i\u1ec3n h\u00ecnh<\/strong><\/td>\nTh\u00e9p \u0111\u01b0\u1eddng k\u00ednh l\u1edbn, h\u1ee3p kim<\/td>\nKh\u00f4ng ch\u1ee9a s\u1eaft, d\u00e2y m\u1ea3nh, t\u1ed1c \u0111\u1ed9 cao<\/td>\nD\u00e2y si\u00eau m\u1ea3nh, kim lo\u1ea1i qu\u00fd<\/td>\n<\/tr>\n
    Chi ph\u00ed t\u01b0\u01a1ng \u0111\u1ed1i<\/strong><\/td>\nTh\u1ea5p \u0111\u1ebfn Trung b\u00ecnh<\/td>\nCao<\/td>\nR\u1ea5t cao<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

    T\u01b0\u01a1ng t\u00e1c c\u1ee7a c\u00e1c bi\u1ebfn s\u1ed1<\/h2>\n

    S\u1ea3n xu\u1ea5t d\u00e2y th\u00e0nh c\u00f4ng kh\u00f4ng ch\u1ec9 d\u1ef1a v\u00e0o m\u1ed9t thi\u1ebft l\u1eadp duy nh\u1ea5t m\u00e0 c\u00f2n d\u1ef1a v\u00e0o vi\u1ec7c c\u00e2n b\u1eb1ng c\u1ea9n th\u1eadn nhi\u1ec1u bi\u1ebfn s\u1ed1 qu\u00e1 tr\u00ecnh li\u00ean k\u1ebft v\u1edbi nhau. \u0110i\u1ec1u ch\u1ec9nh m\u1ed9t tham s\u1ed1, ch\u1eb3ng h\u1ea1n nh\u01b0 t\u1ed1c \u0111\u1ed9 k\u00e9o, t\u1ea5t y\u1ebfu \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn c\u00e1c tham s\u1ed1 kh\u00e1c, nh\u01b0 sinh nhi\u1ec7t v\u00e0 hi\u1ec7u qu\u1ea3 b\u00f4i tr\u01a1n. S\u1ef1 t\u01b0\u01a1ng t\u00e1c n\u00e0y quy\u1ebft \u0111\u1ecbnh kh\u00f4ng ch\u1ec9 hi\u1ec7u qu\u1ea3 c\u1ee7a qu\u00e1 tr\u00ecnh m\u00e0 c\u00f2n c\u1ea3 \u0111\u1eb7c t\u00ednh c\u01a1 h\u1ecdc cu\u1ed1i c\u00f9ng v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng b\u1ec1 m\u1eb7t c\u1ee7a d\u00e2y. Hi\u1ec3u bi\u1ebft k\u1ef9 thu\u1eadt v\u1ec1 c\u00e1c m\u1ed1i quan h\u1ec7 nguy\u00ean nh\u00e2n-k\u1ebft qu\u1ea3 n\u00e0y l\u00e0 c\u1ea7n thi\u1ebft \u0111\u1ec3 t\u1ed1i \u01b0u h\u00f3a v\u00e0 ki\u1ec3m so\u00e1t quy tr\u00ecnh. Ch\u00fang t\u00f4i s\u1ebd ph\u00e2n t\u00edch t\u00e1c \u0111\u1ed9ng c\u1ee7a ba bi\u1ebfn ch\u00ednh: t\u1ed1c \u0111\u1ed9 k\u00e9o, gi\u1ea3m di\u1ec7n t\u00edch qua m\u1ed7i l\u1ea7n k\u00e9o, v\u00e0 nhi\u1ec7t \u0111\u1ed9.<\/p>\n

    T\u1ed1c \u0111\u1ed9 k\u00e9o<\/h3>\n

    T\u1ed1c \u0111\u1ed9 k\u00e9o l\u00e0 y\u1ebfu t\u1ed1 ch\u00ednh th\u00fac \u0111\u1ea9y n\u0103ng su\u1ea5t. Tuy nhi\u00ean, \u1ea3nh h\u01b0\u1edfng c\u1ee7a n\u00f3 c\u00f2n s\u00e2u v\u00e0o c\u01a1 ch\u1ebf c\u1ee7a qu\u00e1 tr\u00ecnh v\u00e0 ph\u1ea3n \u1ee9ng c\u1ee7a v\u1eadt li\u1ec7u.<\/p>\n