{"id":1361,"date":"2026-03-18T06:04:29","date_gmt":"2026-03-18T06:04:29","guid":{"rendered":"https:\/\/cn-hawe.com\/?p=1361"},"modified":"2026-03-19T06:11:46","modified_gmt":"2026-03-19T06:11:46","slug":"cnc-press-brake-tooling","status":"publish","type":"post","link":"https:\/\/cn-hawe.com\/vi\/cnc-press-brake-tooling\/","title":{"rendered":"D\u1ee5ng c\u1ee5 phanh \u00e9p CNC: C\u00e1ch l\u1ef1a ch\u1ecdn l\u1ef1c \u00e9p, khu\u00f4n V v\u00e0 v\u1eadt li\u1ec7u \u0111\u1ec3 \u0111\u1ea1t \u0111\u1ed9 ch\u00ednh x\u00e1c ngay t\u1eeb l\u1ea7n \u0111\u1ea7u ti\u00ean"},"content":{"rendered":"

C\u00fa \u0111\u1ea5m cu\u1ed1i c\u00f9ng t\u00f4i th\u1ea5y n\u1ed5 tung v\u1eeba kh\u00edt v\u1edbi gi\u00e1 gi\u1eef nh\u01b0 th\u1ec3 n\u00f3 sinh ra \u0111\u1ec3 \u1edf \u0111\u00f3.<\/p>\n\n\n\n

S\u00e1u m\u01b0\u01a1i t\u1ea5n m\u1ed7i foot, \u0111\u01b0\u1ee3c kh\u1eafc laser ngay tr\u00ean chu\u00f4i. C\u00f4ng vi\u1ec7c y\u00eau c\u1ea7u 78. Ng\u01b0\u1eddi v\u1eadn h\u00e0nh nh\u00fan vai. \u201cN\u00f3 \u0111\u00e3 ng\u1ed3i y\u00ean m\u00e0.\u201d Khi \u0111\u1ea7u m\u00e1y \u00e9p h\u1ea1 xu\u1ed1ng, ph\u1ea7n trung t\u00e2m b\u1ecb t\u00e1ch v\u00e0 ph\u00f3ng m\u1ed9t m\u1ea3nh qua m\u00e0n ch\u1eafn \u00e1nh s\u00e1ng. N\u0103m ph\u00fat thi\u1ebft l\u1eadp. T\u00e1m ngh\u00ecn \u0111\u00f4 la ti\u1ec1n d\u1ee5ng c\u1ee5. Hai ng\u00e0y ng\u1eebng ho\u1ea1t \u0111\u1ed9ng. Th\u00e9p kh\u00f4ng quan t\u00e2m \u0111\u1ebfn vi\u1ec7c n\u00f3 kh\u1edbp g\u1ecdn g\u00e0ng v\u00e0o v\u1ecb tr\u00ed.<\/p>\n\n\n\n

\u0110\u00f3 l\u00e0 kho\u1ea3ng c\u00e1ch m\u00e0 h\u1ea7u h\u1ebft c\u00e1c x\u01b0\u1edfng kh\u00f4ng bao gi\u1edd kh\u00e9p l\u1ea1i \u0111\u01b0\u1ee3c.<\/p>\n\n\n\n

B\u1eaby Tonnage: T\u1ea1i sao \u201cV\u1eeba v\u1edbi gi\u00e1 gi\u1eef\u201d kh\u00f4ng c\u00f3 ngh\u0129a l\u00e0 \u201cAn to\u00e0n \u0111\u1ec3 u\u1ed1n\u201d<\/h2>\n\n\n\n

B\u1ea1n c\u00f3 th\u1ec3 tr\u01b0\u1ee3t m\u1ed9t c\u00fa \u0111\u1ea5m d\u00e0i 3 foot v\u00e0o gi\u00e1 gi\u1eef \u0111\u01b0\u1ee3c m\u00e0i ch\u00ednh x\u00e1c v\u00e0 c\u1ea3m nh\u1eadn c\u00fa \u201cclick\u201d t\u1eeb l\u1ef1c t\u1eeb. Kh\u00f4ng l\u1eafc. Kh\u00f4ng khe h\u1edf. C\u1ea3m gi\u00e1c an to\u00e0n. Nh\u01b0ng kh\u1ea3 n\u0103ng ch\u1ecbu l\u1ef1c c\u1ee7a c\u1ea5u tr\u00fac kh\u00f4ng ph\u1ea3i l\u00e0 c\u00e2u h\u1ecfi v\u1ec1 h\u00ecnh h\u1ecdc; \u0111\u00f3 l\u00e0 c\u00e2u h\u1ecfi v\u1ec1 l\u1ef1c tr\u00ean m\u1ed7i chi\u1ec1u d\u00e0i.<\/p>\n\n\n\n

L\u1ea5y th\u00e9p m\u1ec1m 4 mm d\u00e0i 1000 mm v\u1edbi khu\u00f4n V 32 mm. B\u1ea3ng ti\u00eau chu\u1ea9n \u0111\u1eb7t tr\u01b0\u1eddng h\u1ee3p u\u1ed1n gi\u00f3 quanh 330 kN cho m\u1ed7i m\u00e9t, gi\u1ea3 \u0111\u1ecbnh \u0111\u1ed9 b\u1ec1n k\u00e9o kho\u1ea3ng 450 N\/mm\u00b2. Chuy\u1ec3n sang th\u00e9p kh\u00f4ng g\u1ec9, b\u1ea1n nh\u00e2n l\u00ean 1,5 l\u1ea7n. Gi\u1edd b\u1ea1n g\u1ea7n 500 kN\/m. Th\u00e9p crom-moly? Nh\u00e2n \u0111\u00f4i l\u00ean. To\u00e1n h\u1ecdc kh\u00f4ng n\u00f3i d\u1ed1i.<\/p>\n\n\n\n

N\u1ebfu c\u00fa \u0111\u1ea5m c\u1ee7a b\u1ea1n \u0111\u01b0\u1ee3c \u0111\u1ecbnh m\u1ee9c 60 t\u1ea5n m\u1ed7i foot m\u00e0 ph\u00e9p t\u00ednh y\u00eau c\u1ea7u 78, b\u1ea1n kh\u00f4ng ph\u1ea3i \u201cv\u01b0\u1ee3t m\u1ed9t ch\u00fat \u0111\u00e2u.\u201d B\u1ea1n v\u01b0\u1ee3t 30% kh\u1ecfi \u0111i\u1ec3m ch\u1ea3y c\u1ee7a m\u1ed9t d\u1ee5ng c\u1ee5 \u0111\u00e3 t\u00f4i c\u1ee9ng, \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf v\u1edbi ch\u1eebng 10\u201315% h\u1ec7 s\u1ed1 an to\u00e0n. S\u1ef1 kh\u00e1c bi\u1ec7t \u0111\u00f3 th\u1ec3 hi\u1ec7n th\u00e0nh \u0111\u00f4 la cho m\u1ed7i inch ph\u1ebf li\u1ec7u v\u00e0 d\u1ee5ng c\u1ee5 g\u00e3y. Ki\u1ec3m tra ch\u1ed7 ng\u1ed3i c\u1ee7a b\u1ea1n.<\/p>\n\n\n\n

V\u1eady \u0111i\u1ec3m th\u1ef1c s\u1ef1 kh\u00f4ng th\u1ec3 quay l\u1ea1i n\u1eb1m \u1edf \u0111\u00e2u?<\/p>\n\n\n\n

T\u00ednh to\u00e1n \u0110i\u1ec3m Kh\u00f4ng Th\u1ec3 Quay L\u1ea1i: Dung l\u01b0\u1ee3ng D\u1ee5ng c\u1ee5 so v\u1edbi \u00c1p l\u1ef1c Ram<\/h3>\n\n\n\n
\"T\u00ednh<\/figure>\n\n\n\n

H\u1ea7u h\u1ebft ng\u01b0\u1eddi v\u1eadn h\u00e0nh nh\u00ecn v\u00e0o b\u1ea3ng \u0111\u1ecbnh m\u1ee9c c\u1ee7a m\u00e1y \u00e9p tr\u01b0\u1edbc ti\u00ean. Hai tr\u0103m t\u1ea5n. Ba tr\u0103m. N\u1ebfu t\u1ed5ng l\u1ef1c c\u00f4ng vi\u1ec7c th\u1ea5p h\u01a1n con s\u1ed1 \u0111\u00f3, h\u1ecd th\u1ea5y y\u00ean t\u00e2m.<\/p>\n\n\n\n

\u0110i\u1ec1u \u0111\u00f3 l\u00e0 ng\u01b0\u1ee3c l\u1ea1i.<\/p>\n\n\n\n

\u0110\u1ecbnh m\u1ee9c c\u1ee7a m\u00e1y \u00e9p l\u00e0 to\u00e0n c\u1ee5c. H\u1ecfng d\u1ee5ng c\u1ee5 l\u00e0 c\u1ee5c b\u1ed9. B\u1ea1n c\u00f3 th\u1ec3 y\u00eau c\u1ea7u 80 t\u1ea5n tr\u00ean 8 foot\u2014r\u1ea5t n\u1eb1m trong gi\u1edbi h\u1ea1n c\u1ee7a m\u00e1y \u00e9p 150 t\u1ea5n. Nh\u01b0ng n\u1ebfu 3 foot l\u1ef1c \u0111\u00f3 \u0111\u1eb7t tr\u00ean m\u1ed9t c\u00fa \u0111\u1ea5m \u0111\u1ecbnh m\u1ee9c 60 t\u1ea5n m\u1ed7i foot, b\u1ea1n \u0111\u00e3 t\u1ea1o m\u1ed9t sai l\u1ec7ch c\u1ea5u tr\u00fac. \u0110\u1ea7u ram s\u1ebd cung c\u1ea5p b\u1ea5t c\u1ee9 l\u1ef1c n\u00e0o b\u1ea1n y\u00eau c\u1ea7u. N\u00f3 kh\u00f4ng c\u00f3 l\u01b0\u01a1ng t\u00e2m.<\/p>\n\n\n\n

\u0110i\u1ec3m kh\u00f4ng th\u1ec3 quay l\u1ea1i l\u00e0 khi s\u1ed1 t\u1ea5n c\u1ea7n thi\u1ebft m\u1ed7i foot v\u01b0\u1ee3t qu\u00e1 th\u00e0nh ph\u1ea7n c\u00f3 \u0111\u1ecbnh m\u1ee9c th\u1ea5p nh\u1ea5t trong ch\u1ed3ng: c\u00fa \u0111\u1ea5m, khu\u00f4n, gi\u00e1 gi\u1eef, ho\u1eb7c k\u1eb9p\u2014ch\u1ee9 kh\u00f4ng ch\u1ec9 khung m\u00e1y. Tr\u00ean th\u1ef1c t\u1ebf, \u0111\u00f3 l\u00e0 l\u00fd do m\u00e1y \u00e9p v\u00e0 d\u1ee5ng c\u1ee5 ph\u1ea3i \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf nh\u01b0 m\u1ed9t h\u1ec7 th\u1ed1ng th\u1ed1ng nh\u1ea5t. M\u1ed9t n\u1ec1n t\u1ea3ng \u0111i\u1ec1u khi\u1ec3n CNC ho\u00e0n ch\u1ec9nh, ch\u1eb3ng h\u1ea1n nh\u01b0 Gi\u1ea3i ph\u00e1p m\u00e1y \u00e9p phanh CNC<\/a> t\u1eeb CN-HAWE, \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 qu\u1ea3n l\u00fd l\u1ef1c u\u1ed1n, ph\u00e2n b\u1ed5 v\u00e0 t\u00e1i l\u1eadp ch\u00ednh x\u00e1c trong c\u00e1c \u1ee9ng d\u1ee5ng kim lo\u1ea1i t\u1ea5m cao c\u1ea5p, gi\u00fap \u0111\u1ea3m b\u1ea3o \u00e1p l\u1ef1c ram \u0111\u01b0\u1ee3c l\u1ec7nh ph\u00f9 h\u1ee3p v\u1edbi dung l\u01b0\u1ee3ng d\u1ee5ng c\u1ee5 th\u1ef1c t\u1ebf. Ki\u1ec3m tra ch\u1ed7 ng\u1ed3i c\u1ee7a b\u1ea1n\u2014b\u1edfi v\u00ec khi th\u00e0nh ph\u1ea7n c\u00f3 \u0111\u1ecbnh m\u1ee9c th\u1ea5p nh\u1ea5t b\u1ecb qu\u00e1 t\u1ea3i, s\u1ef1 h\u1ecfng h\u00f3c \u0111\u00e3 b\u1eaft \u0111\u1ea7u.<\/p>\n\n\n\n

C\u00f4ng th\u1ee9c Tonnage tr\u00ean m\u1ed7i m\u00e9t cho D\u1ee5ng c\u1ee5 chia \u0111o\u1ea1n<\/h4>\n\n\n\n

\u0110\u00e2y l\u00e0 n\u01a1i m\u1ecdi th\u1ee9 tr\u1edf n\u00ean r\u1eafc r\u1ed1i. C\u00f4ng th\u1ee9c u\u1ed1n gi\u00f3 c\u1ed5 \u0111i\u1ec3n\u2014l\u1ef1c t\u1ef7 l\u1ec7 v\u1edbi b\u00ecnh ph\u01b0\u01a1ng \u0111\u1ed9 d\u00e0y nh\u00e2n v\u1edbi chi\u1ec1u d\u00e0i chia cho khe V\u2014l\u00e0 m\u1ed9t x\u1ea5p x\u1ec9. Thay \u0111\u1ed5i g\u00f3c u\u1ed1n, b\u00e1n k\u00ednh b\u00ean trong, ho\u1eb7c ph\u01b0\u01a1ng ph\u00e1p, b\u1ea1n c\u00f3 th\u1ec3 sai l\u1ec7ch t\u1eeb 20\u201350%.<\/p>\n\n\n\n

Gi\u1edd th\u00eam v\u00e0o d\u1ee5ng c\u1ee5 chia \u0111o\u1ea1n.<\/p>\n\n\n\n

Gi\u1ea3 s\u1eed b\u1ea1n t\u1ea1o m\u1ed9t u\u1ed1n d\u00e0i 1000 mm t\u1eeb n\u0103m \u0111o\u1ea1n. B\u1ed1n \u0111o\u1ea1n \u0111\u01b0\u1ee3c \u0111\u1ecbnh m\u1ee9c 80 t\u1ea5n m\u1ed7i foot. M\u1ed9t \u0111o\u1ea1n gi\u1eefa c\u0169 h\u01a1n \u0111\u01b0\u1ee3c \u0111\u1ecbnh m\u1ee9c 60. T\u1ed5ng t\u1ea3i t\u00ednh to\u00e1n c\u00f3 th\u1ec3 t\u01b0\u01a1ng \u0111\u01b0\u01a1ng 65 t\u1ea5n m\u1ed7i foot. Tr\u00ean gi\u1ea5y t\u1edd, \u201cb\u1ed9\u201d c\u00f3 v\u1ebb \u1ed5n. Nh\u01b0ng th\u1ef1c t\u1ebf, \u0111o\u1ea1n gi\u1eefa \u0111\u00f3 tr\u1edf th\u00e0nh b\u00e0n \u0111\u00e0m ph\u00e1n n\u01a1i th\u00e9p g\u1eb7p th\u00e9p. N\u00f3 ch\u1ecbu ph\u1ea7n l\u1ef1c c\u1ee7a m\u00ecnh\u2014v\u00e0 \u0111\u00f4i khi nhi\u1ec1u h\u01a1n n\u1ebfu c\u0103n ch\u1ec9nh kh\u00f4ng ho\u00e0n h\u1ea3o.<\/p>\n\n\n\n

To\u00e1n h\u1ecdc th\u00ec kh\u00f4ng n\u00f3i d\u1ed1i, nh\u01b0ng gi\u1ea3 \u0111\u1ecbnh sai th\u00ec c\u00f3. Lu\u00f4n t\u00ednh s\u1ed1 t\u1ea5n m\u1ed7i m\u00e9t cho v\u1eadt li\u1ec7u v\u00e0 ph\u01b0\u01a1ng ph\u00e1p c\u1ee5 th\u1ec3, r\u1ed3i so s\u00e1nh v\u1edbi \u0111\u1ecbnh m\u1ee9c c\u1ee7a t\u1eebng \u0111o\u1ea1n, kh\u00f4ng ph\u1ea3i trung b\u00ecnh. Ki\u1ec3m tra ch\u1ed7 ng\u1ed3i c\u1ee7a b\u1ea1n.<\/p>\n\n\n\n

X\u00e1c \u0111\u1ecbnh \u201cM\u1eaft x\u00edch y\u1ebfu nh\u1ea5t\u201d trong D\u00e3y D\u1ee5ng c\u1ee5 c\u1ee7a B\u1ea1n<\/h4>\n\n\n\n

T\u00f4i \u0111\u00e3 th\u1ea5y nh\u1eefng c\u00f4ng vi\u1ec7c g\u1ea5p m\u00e9p n\u01a1i c\u00e1c v\u1eadn h\u00e0nh vi\u00ean s\u1eed d\u1ee5ng c\u00e1c s\u1ed1 li\u1ec7u u\u1ed1n kh\u00ed chu\u1ea9n. V\u1edbi th\u00e9p nh\u1eb9 d\u00e0y 1 mm tr\u00ean chi\u1ec1u d\u00e0i m\u1ed9t m\u00e9t, u\u1ed1n kh\u00ed c\u00f3 th\u1ec3 c\u1ea7n kho\u1ea3ng 15 t\u1ea5n tr\u00ean m\u1ed7i m\u00e9t v\u1edbi d\u1ee5ng c\u1ee5 h\u00ecnh gi\u1ecdt n\u01b0\u1edbc. Chuy\u1ec3n sang g\u1ea5p m\u00e9p ho\u00e0n to\u00e0n v\u00e0 b\u1ea1n c\u00f3 th\u1ec3 \u0111\u1ea1t 40 t\u1ea5n tr\u00ean m\u1ed7i m\u00e9t \u2014 cao h\u01a1n kho\u1ea3ng 2,7 l\u1ea7n.<\/p>\n\n\n\n

N\u1ebfu m\u1ed9t \u0111o\u1ea1n khu\u00f4n trong chu\u1ed7i \u0111\u00f3 \u0111\u01b0\u1ee3c \u0111\u1ecbnh m\u1ee9c cho 30 t\u1ea5n tr\u00ean m\u1ed7i m\u00e9t, \u0111\u00f3 l\u00e0 \"c\u1ea7u ch\u00ec\" c\u1ee7a b\u1ea1n. N\u00f3 s\u1ebd \u0111\u1ee9t tr\u01b0\u1edbc khi ph\u1ea7n c\u00f2n l\u1ea1i k\u1ecbp n\u00f3ng l\u00ean.<\/p>\n\n\n\n

M\u1eaft x\u00edch y\u1ebfu nh\u1ea5t kh\u00f4ng ph\u1ea3i l\u00fac n\u00e0o c\u0169ng r\u00f5 r\u00e0ng. N\u00f3 c\u00f3 th\u1ec3 l\u00e0 m\u1ed9t ph\u1ea7n ch\u00e8n khu\u00f4n h\u1eb9p, m\u1ed9t \u0111o\u1ea1n ch\u00e0y ng\u1eafn, th\u1eadm ch\u00ed l\u00e0 h\u1ec7 th\u1ed1ng k\u1eb9p. M\u1ed9t b\u1ed9 ph\u1eadn b\u1ecb \u0111\u00e1nh gi\u00e1 th\u1ea5p s\u1ebd \u0111\u1eb7t gi\u1edbi h\u1ea1n cho to\u00e0n b\u1ed9 thi\u1ebft l\u1eadp. C\u00e1c ph\u00e9p to\u00e1n kh\u00f4ng th\u01b0\u01a1ng l\u01b0\u1ee3ng. H\u00e3y ki\u1ec3m tra ch\u1ed7 ng\u1ed3i c\u1ee7a b\u1ea1n.<\/p>\n\n\n\n

Nh\u01b0ng \u0111i\u1ec1u g\u00ec x\u1ea3y ra khi t\u1ea3i kh\u00f4ng \u0111\u01b0\u1ee3c ph\u00e2n b\u1ed5 \u0111\u1ec1u?<\/p>\n\n\n\n

Nguy hi\u1ec3m c\u1ee7a t\u1ea3i tr\u1ecdng t\u1eadp trung tr\u00ean c\u00e1c \u0111o\u1ea1n d\u1ee5ng c\u1ee5 ng\u1eafn<\/h3>\n\n\n\n
\"Nguy<\/figure>\n\n\n\n

H\u00e3y t\u01b0\u1edfng t\u01b0\u1ee3ng m\u1ed9t chi ti\u1ebft 1200 mm v\u1edbi g\u1edd ch\u1ec9 ti\u1ebfp x\u00fac 300 mm c\u1ee7a ch\u00e0y \u1edf l\u1ef1c c\u1ef1c \u0111\u1ea1i. M\u00e1y ch\u1ea5n v\u1eabn hi\u1ec3n th\u1ecb t\u1ed5ng l\u1ef1c. Ng\u01b0\u1eddi v\u1eadn h\u00e0nh v\u1eabn ngh\u0129 theo t\u1ed5ng l\u1ef1c. Nh\u01b0ng v\u1ec1 c\u1ea5u tr\u00fac, \u0111o\u1ea1n 300 mm \u0111\u00f3 \u0111ang ch\u1ecbu ph\u1ea7n l\u1edbn t\u1ea3i.<\/p>\n\n\n\n

C\u00e1c \u0111o\u1ea1n ng\u1eafn l\u00e0m t\u0103ng nhanh chi ph\u00ed ph\u1ebf li\u1ec7u theo inch. M\u1ed9t c\u00fa ch\u1ea5n 90 t\u1ea5n t\u1eadp trung tr\u00ean m\u1ed9t foot kh\u00f4ng gi\u1ed1ng nh\u01b0 90 t\u1ea5n ph\u00e2n b\u1ed5 tr\u00ean b\u1ed1n foot. \u0110\u00f3 l\u00e0 c\u00e1ch b\u1ea1n l\u00e0m g\u00e3y ch\u1ed1t, l\u00e0m ph\u00ecnh ch\u00e0y, v\u00e0 in d\u1ea5u v\u00e0o khu\u00f4n.<\/p>\n\n\n\n

Th\u00eam u\u1ed1n ch\u1ea1m \u0111\u00e1y \u2014 g\u1ea5p n\u0103m l\u1ea7n l\u1ef1c u\u1ed1n kh\u00ed \u2014 ho\u1eb7c d\u1eadp ti\u1ec1n \u2014 g\u1ea5p m\u01b0\u1eddi l\u1ea7n, v\u00e0 bi\u00ean \u0111\u1ed9 bi\u1ebfn m\u1ea5t. \u0110i\u1ec1u \u201cv\u1eeba kh\u00edt\u201d \u1edf l\u1ef1c th\u1ea5p tr\u1edf th\u00e0nh th\u1ea3m h\u1ecda \u1edf c\u00e1c h\u1ec7 s\u1ed1 ph\u01b0\u01a1ng ph\u00e1p m\u00e0 gi\u00e1 \u0111\u1ee1 kh\u00f4ng nh\u00ecn th\u1ea5y.<\/p>\n\n\n\n

Th\u00e9p ch\u1ec9 c\u1ea3m nh\u1eadn \u00e1p su\u1ea5t tr\u00ean m\u1ed7i inch. B\u1ea1n c\u0169ng n\u00ean nh\u01b0 v\u1eady.<\/p>\n\n\n\n

\u0110i\u1ec1u \u0111\u00f3 d\u1eabn \u0111\u1ebfn c\u00e2u h\u1ecfi kh\u00f3 ch\u1ecbu m\u00e0 m\u1ecdi qu\u1ea3n \u0111\u1ed1c cu\u1ed1i c\u00f9ng \u0111\u1ec1u ph\u1ea3i \u0111\u1ed1i m\u1eb7t.<\/p>\n\n\n\n

C\u00e1i g\u00ec th\u1ef1c s\u1ef1 h\u1ecfng tr\u01b0\u1edbc: D\u1ee5ng c\u1ee5, chi ti\u1ebft, hay m\u00e1y ch\u1ea5n?<\/h3>\n\n\n\n
\"C\u00e1i<\/figure>\n\n\n\n

Trong h\u1ea7u h\u1ebft c\u00e1c x\u01b0\u1edfng th\u1ef1c t\u1ebf, m\u00e1y ch\u1ea5n t\u1ed3n t\u1ea1i. N\u00f3 \u0111\u01b0\u1ee3c ch\u1ebf t\u1ea1o qu\u00e1 m\u1ee9c, khung c\u1ef1c l\u1edbn, v\u00e0 thi\u1ebft k\u1ebf cho chu k\u1ef3 t\u1ea3i \u0111\u1ea7y \u0111\u1ee7.<\/p>\n\n\n\n

Chi ti\u1ebft b\u1ecb ch\u1ea3y tr\u01b0\u1edbc n\u1ebfu l\u1ef1c c\u1ee7a b\u1ea1n v\u01b0\u1ee3t qu\u00e1 gi\u1edbi h\u1ea1n \u0111\u00e0n h\u1ed3i c\u1ee7a v\u1eadt li\u1ec7u. \u0110\u00f3 l\u00e0 ph\u1ebf li\u1ec7u \u1edf m\u1ee9c c\u00f3 th\u1ec3 t\u00ednh to\u00e1n \u2014 \u0111\u00f4i khi ch\u1ec9 v\u00e0i xu m\u1ed7i inch, \u0111\u00f4i khi h\u00e0ng tr\u0103m n\u1ebfu l\u00e0 h\u1ee3p kim h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5.<\/p>\n\n\n\n

D\u1ee5ng c\u1ee5 h\u1ecfng khi l\u1ef1c y\u00eau c\u1ea7u v\u01b0\u1ee3t qu\u00e1 kh\u1ea3 n\u0103ng ch\u1ecbu l\u1ef1c c\u1ee7a ti\u1ebft di\u1ec7n \u0111\u00e3 t\u00f4i c\u1ee9ng. \u0110\u00f3 l\u00e0 h\u00e0ng ngh\u00ecn \u0111\u00f4 trong ch\u1edbp m\u1eaft.<\/p>\n\n\n\n

N\u1ebfu b\u1ea1n li\u00ean t\u1ee5c qu\u00e1 t\u1ea3i, m\u00e1y ch\u1ea5n s\u1ebd b\u1ecb v\u00f5ng b\u00e0n, xo\u1eafn tr\u1ee5c ram ho\u1eb7c n\u1ee9t khung b\u00ean. L\u00fac \u0111\u00f3, th\u1eddi gian ng\u1eebng m\u00e1y \u0111\u01b0\u1ee3c \u0111o b\u1eb1ng tu\u1ea7n.<\/p>\n\n\n\n

V\u00ec v\u1eady, s\u1ef1 thay \u0111\u1ed5i nh\u1eadn th\u1ee9c m\u00e0 t\u00f4i mu\u1ed1n b\u1ea1n kh\u1eafc s\u00e2u l\u00e0: ng\u1eebng h\u1ecfi li\u1ec7u d\u1ee5ng c\u1ee5 c\u00f3 ph\u00f9 h\u1ee3p kh\u00f4ng. B\u1eaft \u0111\u1ea7u h\u1ecfi li\u1ec7u m\u1ecdi th\u00e0nh ph\u1ea7n trong ch\u1ed3ng c\u00f3 th\u1ec3 ch\u1ecbu \u0111\u01b0\u1ee3c v\u1ec1 c\u1ea5u tr\u00fac s\u1ed1 t\u1ea5n tr\u00ean chi\u1ec1u d\u00e0i m\u00e0 v\u1eadt li\u1ec7u c\u1ee7a b\u1ea1n \u0111\u00f2i h\u1ecfi.<\/p>\n\n\n\n

B\u1edfi v\u00ec m\u1ed9t khi tr\u1ee5c ram h\u1ea1 xu\u1ed1ng, h\u1ee3p \u0111\u1ed3ng \u0111\u01b0\u1ee3c th\u1ef1c thi b\u1eb1ng th\u00e9p.<\/p>\n\n\n\n

Gi\u1ea3i m\u00e3 khu\u00f4n V: T\u1ea1i sao gi\u1edbi h\u1ea1n ch\u1ea3y c\u1ee7a v\u1eadt li\u1ec7u quy\u1ebft \u0111\u1ecbnh b\u1ec1 r\u1ed9ng m\u1edf khu\u00f4n<\/h2>\n\n\n\n

T\u00f4i t\u1eebng th\u1ea5y m\u1ed9t v\u1eadn h\u00e0nh vi\u00ean tr\u1ebb b\u00f4i m\u1ed9t t\u1ea5m 4 mm \u2014 thu\u1ed1c nhu\u1ed9m b\u1ed1 tr\u00ed tr\u00ean \u0111\u00e1y \u2014 r\u1ed3i th\u1ef1c hi\u1ec7n m\u1ed9t c\u00fa u\u1ed1n kh\u00ed ch\u1eadm v\u00e0 r\u00fat chi ti\u1ebft ra \u0111\u1ec3 \u0111\u1ecdc d\u1ea5u h\u1eb1n tr\u00ean vai khu\u00f4n. \u0110i\u1ec3m ti\u1ebfp x\u00fac kh\u00f4ng \u1edf gi\u1eefa. M\u1ed9t b\u00ean \u0103n m\u1ea1nh, b\u00ean kia nh\u1eb9. Thu\u1ed1c nhu\u1ed9m \u0111\u00f3 n\u00f3i th\u1eadt \u0111i\u1ec1u m\u00e0n h\u00ecnh l\u1ef1c kh\u00f4ng th\u1ec3: t\u1ea3i kh\u00f4ng \u0111\u01b0\u1ee3c ph\u00e2n b\u1ed5 nh\u01b0 b\u1ea3ng thi\u1ebft l\u1eadp gi\u1ea3 \u0111\u1ecbnh.<\/p>\n\n\n\n

\u0110\u00f3 l\u00e0 ki\u1ec3m so\u00e1t th\u1ef1c t\u1ebf \u0111\u1ea7u ti\u00ean c\u1ee7a b\u1ea1n. S\u1eed d\u1ee5ng thu\u1ed1c nhu\u1ed9m b\u1ed1 tr\u00ed ho\u1eb7c phim \u00e1p l\u1ef1c tr\u00ean vai khu\u00f4n, th\u1ef1c hi\u1ec7n m\u1ed9t c\u00fa ch\u1ea5n c\u00f3 ki\u1ec3m so\u00e1t \u1edf l\u1ef1c t\u00ednh to\u00e1n, v\u00e0 ki\u1ec3m tra ti\u1ebfp x\u00fac. N\u1ebfu d\u1ea5u h\u1eb1n kh\u00f4ng \u0111\u1ec1u, s\u1ed1 t\u1ea5n tr\u00ean chi\u1ec1u d\u00e0i c\u1ee7a b\u1ea1n kh\u00f4ng \u0111\u1ec1u, v\u00e0 m\u1ed9t \u0111o\u1ea1n n\u00e0o \u0111\u00f3 \u0111ang ph\u1ea3i x\u1eed l\u00fd n\u1eb7ng h\u01a1n ph\u1ea7n c\u00f2n l\u1ea1i. Ch\u00eam, ch\u1ec9nh l\u1ea1i ch\u1ed7 ng\u1ed3i, ki\u1ec3m tra l\u1ea1i. C\u00e1c ph\u00e9p to\u00e1n kh\u00f4ng sai, nh\u01b0ng ch\u1ec9 khi h\u00ecnh h\u1ecdc kh\u1edbp v\u1edbi ph\u00e9p to\u00e1n.<\/p>\n\n\n\n

\u0110\u00e2y l\u00e0 l\u00fac c\u00e1c v\u1eadn h\u00e0nh vi\u00ean tr\u1edf n\u00ean ch\u1ee7 quan. H\u1ecd coi khe m\u1edf V nh\u01b0 m\u1ed9t ti\u1ec7n l\u1ee3i\u2014\u201cC\u00f3 g\u00ec tr\u00ean gi\u00e1?\u201d\u2014thay v\u00ec l\u00e0 \u0111\u00f2n b\u1ea9y ch\u00ednh \u0111\u1ec3 \u0111i\u1ec1u ch\u1ec9nh l\u1ef1c. C\u00f4ng th\u1ee9c u\u1ed1n kh\u00ed ti\u00eau chu\u1ea9n t\u0103ng t\u1ef7 l\u1ec7 v\u1edbi b\u00ecnh ph\u01b0\u01a1ng \u0111\u1ed9 d\u00e0y chia cho khe m\u1edf V. G\u1ea5p \u0111\u00f4i V, b\u1ea1n g\u1ea7n nh\u01b0 gi\u1ea3m m\u1ed9t n\u1eeda t\u1ea3i tr\u1ecdng. Gi\u1eef V ch\u1eb7t, t\u1ea3i s\u1ebd t\u0103ng nhanh. Gi\u1edbi h\u1ea1n ch\u1ea3y n\u1eb1m trong ph\u01b0\u01a1ng tr\u00ecnh \u0111\u00f3 nh\u01b0 m\u1ed9t h\u1ec7 s\u1ed1 nh\u00e2n. Th\u00e9p m\u1ea1nh h\u01a1n \u0111\u00f2i h\u1ecfi nhi\u1ec1u l\u1ef1c h\u01a1n cho c\u00f9ng h\u00ecnh d\u1ea1ng. N\u1ebfu b\u1ea1n kh\u00f4ng m\u1edf r\u1ed9ng V \u0111\u1ec3 b\u00f9 l\u1ea1i, b\u1ea1n s\u1ebd \u0111\u1ea9y t\u1ea3i tr\u1ecdng t\u00ednh b\u1eb1ng t\u1ea5n tr\u00ean m\u1ed7i foot v\u1ec1 ph\u00eda \u0111o\u1ea1n y\u1ebfu nh\u1ea5t trong chu\u1ed7i c\u1ee7a b\u1ea1n.<\/p>\n\n\n\n

\u0110\u00e2y l\u00e0 c\u00e1ch \u0111\u1ec3 b\u1ea1n ki\u1ec3m ch\u1ee9ng v\u00e0 ki\u1ec3m so\u00e1t ph\u00e2n b\u1ed1 tr\u00ean th\u1ef1c t\u1ebf:<\/p>\n\n\n\n

    \n
  1. T\u00ednh to\u00e1n t\u1ea5n c\u1ea7n thi\u1ebft tr\u00ean m\u1ed7i m\u00e9t d\u1ef1a theo c\u01b0\u1eddng \u0111\u1ed9 k\u00e9o th\u1ef1c t\u1ebf c\u1ee7a v\u1eadt li\u1ec7u, kh\u00f4ng d\u1ef1a tr\u00ean s\u1ed1 li\u1ec7u trong danh m\u1ee5c.<\/li>\n\n\n\n
  2. Ch\u1ecdn khe m\u1edf V sao cho t\u1ea5n tr\u00ean m\u1ed7i m\u00e9t n\u1eb1m d\u01b0\u1edbi th\u00e0nh ph\u1ea7n c\u00f3 \u0111\u1ecbnh m\u1ee9c th\u1ea5p nh\u1ea5t.<\/li>\n\n\n\n
  3. Ki\u1ec3m ch\u1ee9ng ti\u1ebfp x\u00fac b\u1eb1ng thu\u1ed1c nhu\u1ed9m.<\/li>\n<\/ol>\n\n\n\n

    Khe m\u1edf khu\u00f4n kh\u00f4ng ph\u1ea3i \u0111\u1ec3 v\u1eeba kh\u00edt. N\u00f3 l\u00e0 v\u1ec1 s\u1ef1 s\u1ed1ng c\u00f2n c\u1ea5u tr\u00fac d\u01b0\u1edbi t\u1ea3i tr\u1ecdng do gi\u1edbi h\u1ea1n ch\u1ea3y. Thay \u0111\u1ed5i V, v\u00e0 b\u1ea1n thay \u0111\u1ed5i \u0111i\u1ec1u ki\u1ec7n \u0111\u00e0m ph\u00e1n tr\u01b0\u1edbc khi thanh \u00e9p di chuy\u1ec3n.<\/p>\n\n\n\n

    Quy t\u1eafc 8x v\u00e0 Ngo\u1ea1i l\u1ec7 H\u1ee3p kim C\u01b0\u1eddng \u0111\u1ed9 cao<\/h3>\n\n\n\n

    C\u00f4ng vi\u1ec7c y\u00eau c\u1ea7u t\u1ea3i tr\u1ecdng t\u01b0\u01a1ng \u0111\u01b0\u01a1ng 78 t\u1ea5n tr\u00ean m\u1ed7i foot cho th\u00e9p m\u1ec1m 6 mm. D\u00f9ng quy t\u1eafc 8\u00d7 c\u0169\u2014khe m\u1edf V kho\u1ea3ng g\u1ea5p t\u00e1m l\u1ea7n \u0111\u1ed9 d\u00e0y v\u1eadt li\u1ec7u\u2014ch\u00fang t\u00f4i ch\u1ecdn khu\u00f4n 48 mm. C\u00e1c con s\u1ed1 ki\u1ec3m tra \u1ed5n. T\u1ea3i tr\u1ecdng tr\u00ean chi\u1ec1u d\u00e0i n\u1eb1m ngay d\u01b0\u1edbi gi\u1edbi h\u1ea1n ch\u00e0y. S\u1ea1ch s\u1ebd.<\/p>\n\n\n\n

    R\u1ed3i gi\u1ea5y ch\u1ee9ng nh\u1eadn v\u1eadt li\u1ec7u \u0111\u1ebfn sai. Kh\u00f4ng ph\u1ea3i l\u00e0 th\u00e9p m\u1ec1m v\u1edbi kho\u1ea3ng 60.000 PSI c\u01b0\u1eddng \u0111\u1ed9 k\u00e9o. M\u00e0 l\u00e0 th\u00e9p k\u1ebft c\u1ea5u c\u01b0\u1eddng \u0111\u1ed9 cao g\u1ea7n 100.000 PSI. C\u00f9ng \u0111\u1ed9 d\u00e0y. C\u00f9ng V. T\u1ea3i tr\u1ecdng y\u00eau c\u1ea7u t\u0103ng l\u00ean kho\u1ea3ng theo t\u1ef7 l\u1ec7 c\u01b0\u1eddng \u0111\u1ed9 k\u00e9o. B\u1ea1n kh\u00f4ng c\u1ea7n b\u1ea3ng tr\u1eafng \u0111\u1ec3 th\u1ea5y v\u1ea5n \u0111\u1ec1. B\u1ea1n kh\u00f4ng c\u00f2n \u1edf m\u1ee9c 78 n\u1eefa. B\u1ea1n \u0111\u00e3 v\u01b0\u1ee3t 120 t\u1ea5n tr\u00ean m\u1ed7i foot.<\/p>\n\n\n\n

    Quy t\u1eafc 8\u00d7 hi\u1ec7u qu\u1ea3 v\u00ec n\u00f3 c\u00e2n b\u1eb1ng b\u00e1n k\u00ednh b\u00ean trong, t\u1ea3i tr\u1ecdng v\u00e0 \u0111\u1ed9 d\u1ebbo c\u1ee7a v\u1eadt li\u1ec7u cho c\u00e1c lo\u1ea1i th\u00e9p carbon th\u1ea5p th\u00f4ng d\u1ee5ng. Nh\u01b0ng khi gi\u1edbi h\u1ea1n ch\u1ea3y t\u0103ng, quy t\u1eafc \u0111\u00f3 kh\u00f4ng c\u00f2n b\u1ea3o v\u1ec7 b\u1ea1n. Ho\u1eb7c b\u1ea1n m\u1edf V\u201410\u00d7, th\u1eadm ch\u00ed 12\u00d7 \u0111\u1ed9 d\u00e0y\u2014ho\u1eb7c b\u1ea1n ch\u1ea5p nh\u1eadn t\u1ea3i tr\u1ecdng tr\u00ean chi\u1ec1u d\u00e0i t\u0103ng m\u1ea1nh. V\u00e0 t\u1ea3i tr\u1ecdng tr\u00ean chi\u1ec1u d\u00e0i m\u1edbi l\u00e0 th\u1ee9 ph\u00e1 h\u1ecfng d\u1ee5ng c\u1ee5, ch\u1ee9 kh\u00f4ng ph\u1ea3i \u00fd t\u1ed1t.<\/p>\n\n\n\n

    H\u1ee3p kim c\u01b0\u1eddng \u0111\u1ed9 cao l\u00e0 ngo\u1ea1i l\u1ec7 ch\u1ee9ng minh quy t\u1eafc: khe m\u1edf V ph\u1ea3i t\u0103ng c\u00f9ng v\u1edbi c\u01b0\u1eddng \u0111\u1ed9 n\u1ebfu b\u1ea1n mu\u1ed1n gi\u1eef t\u1ea3i tr\u1ecdng c\u1ea5u tr\u00fac \u1ed5n \u0111\u1ecbnh. Ki\u1ec3m tra v\u1ecb tr\u00ed c\u1ee7a b\u1ea1n.<\/p>\n\n\n\n

    \u0110i\u1ec1u ch\u1ec9nh cho Th\u00e9p kh\u00f4ng g\u1ec9 v\u00e0 Nh\u00f4m 6061-T6<\/h4>\n\n\n\n

    Th\u00e9p kh\u00f4ng g\u1ec9 v\u1edbi \u0111\u1ed9 d\u00e0y t\u01b0\u01a1ng t\u1ef1 th\u00e9p m\u1ec1m th\u01b0\u1eddng y\u00eau c\u1ea7u l\u1ef1c kho\u1ea3ng 1,4 \u0111\u1ebfn 1,6 l\u1ea7n, t\u00f9y theo lo\u1ea1i v\u00e0 t\u00ecnh tr\u1ea1ng. Nh\u00f4m 6061-T6 c\u0169ng c\u00f3 th\u1ec3 g\u00e2y b\u1ea5t ng\u1edd; m\u1eb7c d\u00f9 \u0111\u01b0\u1ee3c coi l\u00e0 \u201cm\u1ec1m\u201d trong tr\u00f2 chuy\u1ec7n, c\u01b0\u1eddng \u0111\u1ed9 k\u00e9o trong tr\u1ea1ng th\u00e1i t\u00f4i T6 \u0111\u1ee7 cao \u0111\u1ec3 y\u00eau c\u1ea7u t\u1ea3i tr\u1ecdng th\u1ef1c, v\u00e0 n\u00f3 s\u1ebd n\u1ee9t n\u1ebfu b\u1ea1n \u00e9p b\u00e1n k\u00ednh qu\u00e1 ch\u1eb7t.<\/p>\n\n\n\n

    T\u00f4i \u0111\u00e3 th\u1ea5y v\u1eadn h\u00e0nh vi\u00ean gi\u1eef c\u00f9ng khe V 8\u00d7 t\u1eeb th\u00e9p m\u1ec1m v\u00e0 ch\u1ec9 \u201c\u00e9p m\u1ea1nh h\u01a1n\u201d v\u1edbi th\u00e9p kh\u00f4ng g\u1ec9. Th\u1ef1c t\u1ebf x\u1ea3y ra l\u00e0 \u00e1p l\u1ef1c ti\u1ebfp x\u00fac tr\u00ean vai khu\u00f4n t\u0103ng v\u1ecdt, b\u1eaft \u0111\u1ea7u tr\u1ea7y x\u01b0\u1edbc, v\u00e0 t\u1ea3i tr\u1ecdng t\u00ednh b\u1eb1ng t\u1ea5n tr\u00ean m\u1ed7i inch c\u1ee5c b\u1ed9 t\u0103ng v\u00e0o t\u1edbi gi\u1edbi h\u1ea1n d\u1ee5ng c\u1ee5. Chi ph\u00ed t\u00ednh theo inch ph\u1ebf ph\u1ea9m xu\u1ea5t hi\u1ec7n d\u01b0\u1edbi d\u1ea1ng r\u00e1ch b\u1ec1 m\u1eb7t v\u00e0 vi n\u1ee9t t\u1ea1i \u0111\u01b0\u1eddng u\u1ed1n.<\/p>\n\n\n\n

    M\u1edf V t\u1edbi 10\u00d7 \u0111\u1ed9 d\u00e0y cho th\u00e9p kh\u00f4ng g\u1ec9 nh\u01b0 \u0111i\u1ec3m b\u1eaft \u0111\u1ea7u. V\u1edbi 6061-T6, h\u00e3y xem x\u00e9t c\u1ea3 t\u1ea3i tr\u1ecdng v\u00e0 b\u00e1n k\u00ednh b\u00ean trong t\u1ed1i thi\u1ec3u \u0111\u1ec3 tr\u00e1nh n\u1ee9t; m\u1edf V r\u1ed9ng h\u01a1n m\u1ed9t ch\u00fat s\u1ebd gi\u1ea3m l\u1ef1c v\u00e0 l\u00e0m gi\u1ea3m \u1ee9ng su\u1ea5t. B\u1ea1n kh\u00f4ng t\u00ecm ki\u1ebfm s\u1ef1 v\u1eeba kh\u00edt. B\u1ea1n \u0111ang qu\u1ea3n l\u00fd t\u1ea3i do gi\u1edbi h\u1ea1n ch\u1ea3y \u0111\u1ec3 \u0111o\u1ea1n y\u1ebfu nh\u1ea5t kh\u00f4ng b\u1ecb b\u1ea5t ng\u1edd.<\/p>\n\n\n\n

    Khe V nh\u1ecf h\u01a1n cho B\u00e1n k\u00ednh nh\u1ecdn h\u01a1n: T\u00ednh to\u00e1n H\u00ecnh ph\u1ea1t T\u1ea3i tr\u1ecdng<\/h4>\n\n\n\n

    B\u00e2y gi\u1edd t\u01b0\u1edfng t\u01b0\u1ee3ng b\u1ea1n c\u1ea7n b\u00e1n k\u00ednh b\u00ean trong ch\u1eb7t h\u01a1n quy t\u1eafc 8\u00d7 \u0111\u01b0a ra. B\u1ea1n gi\u1ea3m t\u1eeb khe V 32 mm xu\u1ed1ng 20 mm tr\u00ean th\u00e9p 4 mm \u0111\u1ec3 \u0111\u1ea1t u\u1ed1n nh\u1ecdn h\u01a1n.<\/p>\n\n\n\n

    L\u1ef1c t\u1ef7 l\u1ec7 ngh\u1ecbch v\u1edbi V. Gi\u1ea3m V kho\u1ea3ng 37%, t\u1ea3i tr\u1ecdng c\u1ee7a b\u1ea1n t\u0103ng kho\u1ea3ng 60%. \u0110i\u1ec1u \u0111\u00f3 kh\u00f4ng ph\u1ea3i tr\u1ef1c gi\u00e1c tuy\u1ebfn t\u00ednh\u2014\u0111\u00f3 l\u00e0 ph\u01b0\u01a1ng tr\u00ecnh cho th\u1ea5y. N\u1ebfu b\u1ea1n \u1edf m\u1ee9c 30 t\u1ea5n m\u1ed7i m\u00e9t, b\u1ea1n s\u1ebd nhanh ch\u00f3ng l\u00ean g\u1ea7n 48. C\u00f9ng v\u1eadt li\u1ec7u. C\u00f9ng chi\u1ec1u d\u00e0i. Khu\u00f4n kh\u00e1c.<\/p>\n\n\n\n

    \u0110\u00e2y l\u00e0 n\u01a1i c\u00e1c x\u01b0\u1edfng b\u1ecb thi\u1ec7t h\u1ea1i. H\u1ecd t\u1eadp trung v\u00e0o k\u1ebft qu\u1ea3 h\u00ecnh h\u1ecdc\u2014\u201cT\u00f4i c\u1ea7n g\u00f3c nh\u1ecdn h\u01a1n\u201d\u2014v\u00e0 qu\u00ean r\u1eb1ng n\u0103ng l\u1ef1c c\u1ea5u tr\u00fac \u0111ang tr\u1ea3 gi\u00e1. N\u1ebfu 48 t\u1ea5n m\u1ed7i m\u00e9t v\u01b0\u1ee3t qu\u00e1 \u0111o\u1ea1n khu\u00f4n th\u1ea5p nh\u1ea5t \u0111\u01b0\u1ee3c \u0111\u1ecbnh m\u1ee9c \u1edf 40, b\u1ea1n v\u1eeba thi\u1ebft k\u1ebf m\u1ed9t \u0111i\u1ec3m h\u1ecfng \u0111\u1ec3 \u0111\u1ed5i l\u1ea5y b\u00e1n k\u00ednh.<\/p>\n\n\n\n

    U\u1ed1n nh\u1ecdn h\u01a1n ti\u00eau t\u1ed1n t\u1ea3i tr\u1ecdng. To\u00e1n h\u1ecdc kh\u00f4ng th\u01b0\u01a1ng l\u01b0\u1ee3ng. Ki\u1ec3m tra v\u1ecb tr\u00ed c\u1ee7a b\u1ea1n.<\/p>\n\n\n\n

    C\u00e1ch B\u00e1n K\u00ednh Vai C\u1ed1i \u1ea2nh H\u01b0\u1edfng \u0111\u1ebfn Hi\u1ec7n T\u01b0\u1ee3ng M\u00e0i M\u00f2n B\u1ec1 M\u1eb7t v\u00e0 K\u00e9o V\u1eadt Li\u1ec7u<\/h3>\n\n\n\n

    T\u00f4i t\u1eebng thay m\u1ed9t b\u1ed9 c\u1ed1i tr\u00f4ng v\u1eabn \u1ed5n v\u1ec1 k\u00edch th\u01b0\u1edbc nh\u01b0ng c\u00f3 ph\u1ea7n vai s\u1eafc v\u00e0 b\u1ecb m\u00f2n. Khi ch\u1ecbu t\u1ea3i, th\u00e9p kh\u00f4ng g\u1ec9 k\u00e9o l\u00ea qua nh\u1eefng c\u1ea1nh \u0111\u00f3 gi\u1ed1ng nh\u01b0 gi\u1ea5y nh\u00e1m c\u1ecd v\u00e0o nh\u00f4m.<\/p>\n\n\n\n

    B\u00e1n k\u00ednh vai c\u1ed1i ki\u1ec3m so\u00e1t c\u00e1ch t\u1ea5m kim lo\u1ea1i ch\u1ea3y khi u\u1ed1n. N\u1ebfu qu\u00e1 s\u1eafc, di\u1ec7n t\u00edch ti\u1ebfp x\u00fac gi\u1ea3m. \u00c1p su\u1ea5t ti\u1ebfp x\u00fac \u2014 l\u1ef1c chia di\u1ec7n t\u00edch \u2014 t\u0103ng l\u00ean. \u00c1p su\u1ea5t cao l\u00e0m t\u0103ng ma s\u00e1t, khi\u1ebfn l\u1ef1c u\u1ed1n c\u1ea7n thi\u1ebft t\u0103ng nh\u1eb9 so v\u1edbi c\u00f4ng th\u1ee9c chu\u1ea9n. N\u00f3 c\u0169ng th\u00fac \u0111\u1ea9y m\u00e0i m\u00f2n b\u1ec1 m\u1eb7t, \u0111\u1eb7c bi\u1ec7t v\u1edbi th\u00e9p kh\u00f4ng g\u1ec9. M\u00e0i m\u00f2n l\u1ea1i l\u00e0m t\u0103ng ma s\u00e1t l\u1ea7n n\u1eefa. B\u1ea1n c\u00f3 m\u1ed9t v\u00f2ng ph\u1ea3n h\u1ed3i: ma s\u00e1t nhi\u1ec1u h\u01a1n, l\u1ef1c l\u1edbn h\u01a1n, nhi\u1ec1u t\u1ea5n tr\u00ean m\u1ed7i inch h\u01a1n.<\/p>\n\n\n\n

    M\u1edf r\u1ed9ng b\u00e1n k\u00ednh vai gi\u00fap ph\u00e2n t\u00e1n di\u1ec7n t\u00edch ti\u1ebfp x\u00fac, gi\u1ea3m \u00e1p su\u1ea5t \u0111\u1ec9nh v\u00e0 l\u00e0m tr\u01a1n qu\u00e1 tr\u00ecnh k\u00e9o v\u1eadt li\u1ec7u v\u00e0o h\u00ecnh V. \u0110i\u1ec1u n\u00e0y kh\u00f4ng ch\u1ec9 b\u1ea3o v\u1ec7 b\u1ec1 m\u1eb7t th\u00e0nh ph\u1ea9m; n\u00f3 c\u00f2n \u1ed5n \u0111\u1ecbnh \u0111\u01b0\u1eddng truy\u1ec1n l\u1ef1c \u0111\u1ec3 kh\u00f4ng c\u00f3 d\u1ea3i nh\u1ecf n\u00e0o c\u1ee7a vai c\u1ed1i tr\u1edf th\u00e0nh \u0111i\u1ec3m h\u1ecfng \u1ea9n.<\/p>\n\n\n\n

    H\u00e3y ki\u1ec3m tra ph\u1ea7n vai c\u1ed1i v\u1edbi c\u00f9ng s\u1ef1 nghi ng\u1edd m\u00e0 b\u1ea1n ki\u1ec3m tra bi\u1ec3u \u0111\u1ed3 t\u1ea3i tr\u1ecdng. M\u1ed9t vai c\u1ed1i \u0111\u01b0\u1ee3c \u0111\u00e1nh b\u00f3ng v\u00e0 bo \u0111\u00fang b\u00e1n k\u00ednh l\u00e0 m\u1ed9t ph\u1ea7n c\u1ee7a t\u00ednh to\u00e1n k\u1ebft c\u1ea5u, kh\u00f4ng ph\u1ea3i b\u1ea3o d\u01b0\u1ee1ng mang t\u00ednh th\u1ea9m m\u1ef9.<\/p>\n\n\n\n

    U\u1ed1n Kh\u00f4ng Kh\u00ed so v\u1edbi U\u1ed1n Ch\u1ea1m \u0110\u00e1y: T\u00ednh To\u00e1n H\u1ec7 S\u1ed1 T\u1ea3i Tr\u1ecdng Th\u1ef1c<\/h3>\n\n\n\n

    \u0110\u00e2y l\u00e0 n\u01a1i ph\u01b0\u01a1ng ph\u00e1p c\u00f3 th\u1ec3 \u0111\u00e1nh l\u1eeba nh\u1eefng ph\u00e9p to\u00e1n t\u1ed1t.<\/p>\n\n\n\n

    U\u1ed1n kh\u00f4ng kh\u00ed c\u00f3 th\u1ec3 y\u00eau c\u1ea7u 30 t\u1ea5n m\u1ed7i m\u00e9t \u1edf m\u1ed9t thi\u1ebft l\u1eadp nh\u1ea5t \u0111\u1ecbnh. Chuy\u1ec3n sang u\u1ed1n ch\u1ea1m \u0111\u00e1y \u2014 \u00e9p v\u1eadt li\u1ec7u ho\u00e0n to\u00e0n v\u00e0o g\u00f3c c\u1ed1i \u2014 v\u00e0 l\u1ef1c c\u1ea7n thi\u1ebft c\u00f3 th\u1ec3 t\u0103ng g\u1ea5p kho\u1ea3ng n\u0103m l\u1ea7n u\u1ed1n kh\u00f4ng kh\u00ed. D\u1eadp \u0111\u1ed3ng c\u00f3 th\u1ec3 \u0111\u1ea1t g\u1ea5p m\u01b0\u1eddi l\u1ea7n. V gi\u1ed1ng nhau. \u0110\u1ed9 d\u00e0y gi\u1ed1ng nhau. Kh\u00e1c ph\u01b0\u01a1ng ph\u00e1p.<\/p>\n\n\n\n

    V\u00ec v\u1eady, n\u1ebfu ph\u00e9p t\u00ednh u\u1ed1n kh\u00f4ng kh\u00ed c\u1ee7a b\u1ea1n n\u1eb1m an to\u00e0n d\u01b0\u1edbi m\u1ee9c \u0111\u00e1nh gi\u00e1 40 t\u1ea5n m\u1ed7i m\u00e9t c\u1ee7a c\u1ed1i, th\u00ec u\u1ed1n ch\u1ea1m \u0111\u00e1y c\u00f9ng chi ti\u1ebft \u0111\u00f3 c\u00f3 th\u1ec3 c\u1ea7n t\u1edbi 150 t\u1ea5n. Ph\u1ea7n y\u1ebfu nh\u1ea5t kh\u00f4ng quan t\u00e2m vi\u1ec7c k\u00edch th\u01b0\u1edbc kh\u1ea9u m\u1edf c\u1ee7a b\u1ea1n \u201c\u0111\u00fang\u201d. N\u00f3 ch\u1ec9 c\u1ea3m nh\u1eadn h\u1ec7 s\u1ed1 nh\u00e2n l\u1ef1c.<\/p>\n\n\n\n

    Vi\u1ec7c ch\u1ecdn ph\u01b0\u01a1ng ph\u00e1p l\u00e0 m\u1ed9t quy\u1ebft \u0111\u1ecbnh k\u1ebft c\u1ea5u. N\u1ebfu b\u1ea1n bu\u1ed9c ph\u1ea3i u\u1ed1n ch\u1ea1m \u0111\u00e1y \u0111\u1ec3 ki\u1ec3m so\u00e1t g\u00f3c, b\u1ea1n ho\u1eb7c t\u0103ng kh\u1ea9u m\u1edf h\u00ecnh V, gi\u1ea3m chi\u1ec1u d\u00e0i u\u1ed1n m\u1ed7i l\u1ea7n, ho\u1eb7c chia quy tr\u00ecnh th\u00e0nh nhi\u1ec1u l\u1ea7n u\u1ed1n \u0111\u1ec3 n\u1eb1m trong gi\u1edbi h\u1ea1n t\u1ea3i m\u1ed7i \u0111o\u1ea1n. N\u1ebfu kh\u00f4ng, b\u1ea1n \u0111ang k\u00fd m\u1ed9t h\u1ee3p \u0111\u1ed3ng m\u00e0 d\u1ee5ng c\u1ee5 c\u1ee7a b\u1ea1n kh\u00f4ng th\u1ec3 th\u1ef1c hi\u1ec7n. Ki\u1ec3m tra ch\u1ed7 ng\u1ed3i c\u1ee7a b\u1ea1n.<\/p>\n\n\n\n

    Y\u1ebfu T\u1ed1 Ma S\u00e1t: T\u1ea1i Sao T\u00ecnh Tr\u1ea1ng C\u1ed1i Quy\u1ebft \u0110\u1ecbnh G\u00f3c U\u1ed1n Cu\u1ed1i C\u00f9ng<\/h4>\n\n\n\n

    Th\u1ef1c hi\u1ec7n hai l\u1ea7n u\u1ed1n kh\u00f4ng kh\u00ed gi\u1ed1ng h\u1ec7t nhau: m\u1ed9t tr\u00ean c\u1ed1i s\u1ea1ch, \u0111\u01b0\u1ee3c \u0111\u00e1nh b\u00f3ng; m\u1ed9t tr\u00ean c\u1ed1i c\u00f3 c\u1eb7n v\u00e0 m\u00e0i m\u00f2n nh\u1eb9. C\u00f9ng \u0111\u1ed9 s\u00e2u l\u1eadp tr\u00ecnh. K\u1ebft qu\u1ea3 g\u00f3c kh\u00e1c nhau.<\/p>\n\n\n\n

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

    Ma s\u00e1t gi\u1eefa t\u1ea5m v\u00e0 vai c\u1ed1i ch\u1ed1ng l\u1ea1i s\u1ef1 k\u00e9o v\u1eadt li\u1ec7u. Ma s\u00e1t cao h\u01a1n khi\u1ebfn t\u1ea5m kh\u00f4ng tr\u01b0\u1ee3t d\u1ec5 d\u00e0ng v\u00e0o h\u00ecnh V, t\u1eeb \u0111\u00f3 thay \u0111\u1ed5i nh\u1eb9 h\u00ecnh h\u1ecdc u\u1ed1n hi\u1ec7u qu\u1ea3 v\u00e0 t\u0103ng l\u1ef1c c\u1ea7n thi\u1ebft. L\u1ef1c t\u0103ng th\u00eam n\u00e0y xu\u1ea5t hi\u1ec7n d\u01b0\u1edbi d\u1ea1ng \u0111\u1ed9 v\u00f5ng l\u1edbn h\u01a1n trong m\u00e1y v\u00e0 c\u1ee5m d\u1ee5ng c\u1ee5, l\u00e0m thay \u0111\u1ed5i g\u00f3c cu\u1ed1i qua hi\u1ec7n t\u01b0\u1ee3ng ph\u1ee5c h\u1ed3i \u0111\u00e0n h\u1ed3i.<\/p>\n\n\n\n

    V\u00ec v\u1eady, b\u1ea1n \u0111i\u1ec1u ch\u1ec9nh g\u00f3c \u1edf b\u1ea3ng \u0111i\u1ec1u khi\u1ec3n, t\u0103ng \u0111\u1ed9 s\u00e2u. \u0110i\u1ec1u \u0111\u00f3 l\u00e0m t\u0103ng l\u1ef1c. L\u1ef1c t\u0103ng th\u00eam l\u00e0m t\u0103ng \u0111\u1ed9 v\u00f5ng. \u0110i\u1ec1u n\u00e0y t\u1ea3i tr\u1ecdng m\u1ed9t s\u1ed1 \u0111o\u1ea1n nhi\u1ec1u h\u01a1n so v\u1edbi b\u1ea3ng t\u00ednh d\u1ef1 \u0111o\u00e1n.<\/p>\n\n\n\n

    Gi\u1eef c\u1ed1i s\u1ea1ch. M\u00e0i b\u1ecf m\u00e0i m\u00f2n. X\u00e1c minh g\u00f3c v\u1edbi v\u1eadt li\u1ec7u t\u1ed1t \u0111\u00e3 bi\u1ebft v\u00e0 c\u00f3 t\u00e0i li\u1ec7u v\u1ec1 \u0111\u1ed9 b\u1ec1n k\u00e9o. B\u1edfi v\u00ec \u0111\u1ed9 ch\u00ednh x\u00e1c g\u00f3c u\u1ed1n kh\u00f4ng ch\u1ec9 l\u00e0 h\u00ecnh h\u1ecdc v\u00e0 v\u1ecb tr\u00ed g\u00e1 sau \u2014 n\u00f3 l\u00e0 s\u1ea3n ph\u1ea9m c\u1ee7a l\u1ef1c, ma s\u00e1t, v\u00e0 ph\u1ee5c h\u1ed3i \u0111\u00e0n h\u1ed3i.<\/p>\n\n\n\n

    V\u00e0 \u0111i\u1ec1u \u0111\u00f3 d\u1eabn ch\u00fang ta \u0111\u1ebfn s\u1ef1 c\u00e2n nh\u1eafc ti\u1ebfp theo: m\u1ed9t khi kh\u1ea9u m\u1edf h\u00ecnh V v\u00e0 ph\u01b0\u01a1ng ph\u00e1p \u0111\u00e3 quy\u1ebft \u0111\u1ecbnh l\u1ef1c, th\u00ec b\u00e1n k\u00ednh ch\u00e0y v\u00e0 tr\u00ed nh\u1edb v\u1eadt li\u1ec7u s\u1ebd quy\u1ebft \u0111\u1ecbnh g\u00f3c cu\u1ed1i c\u00f9ng s\u1ebd l\u00e0 bao nhi\u00eau sau khi t\u1ea3i \u0111\u01b0\u1ee3c b\u1ecf.<\/p>\n\n\n\n

    Ki\u1ec3m Tra Th\u1ef1c T\u1ebf B\u00e1n K\u00ednh: Gh\u00e9p H\u00ecnh H\u1ecdc Ch\u00e0y v\u1edbi Ph\u1ee5c H\u1ed3i v\u00e0 Tr\u00ed Nh\u1edb V\u1eadt Li\u1ec7u<\/h2>\n\n\n\n

    Ch\u00fang t\u00f4i u\u1ed1n kh\u00f4ng kh\u00ed th\u00e9p kh\u00f4ng g\u1ec9 304 d\u00e0y 6 mm m\u00f9a \u0111\u00f4ng n\u0103m ngo\u00e1i. Kh\u1ea9u m\u1edf h\u00ecnh V \u0111\u00fang. T\u1ea5n m\u1ed7i m\u00e9t n\u1eb1m tho\u1ea3i m\u00e1i d\u01b0\u1edbi m\u1ee9c \u0111\u00e1nh gi\u00e1 c\u1ee7a c\u1ed1i. \u0110\u1ed9 s\u00e2u ch\u00e0y \u0111\u1ea1t gi\u00e1 tr\u1ecb \u0111\u00e3 l\u1eadp tr\u00ecnh. Khi ch\u1ecbu t\u1ea3i, g\u00f3c tr\u00ean laser \u0111\u1ecdc 90\u00b0. Ch\u00fang t\u00f4i nh\u1ea3 \u00e1p.<\/p>\n\n\n\n

    N\u00f3 m\u1edf ra th\u00e0nh 94\u00b0.<\/p>\n\n\n\n

    Kh\u00f4ng c\u00f3 g\u00ec \u201cdi chuy\u1ec3n\u201d. Kh\u00f4ng c\u00f3 g\u00ec tr\u01b0\u1ee3t. M\u00e1y kh\u00f4ng n\u00f3i d\u1ed1i. Th\u00e9p \u0111\u01a1n gi\u1ea3n l\u00e0 th\u01b0 gi\u00e3n. B\u1ed1n \u0111\u1ed9 n\u00e0y l\u00e0 ph\u1ee5c h\u1ed3i \u0111\u00e0n h\u1ed3i \u2014 springback \u2014 v\u00e0 \u0111\u00f3 l\u00e0 ph\u1ea7n y\u1ebfu t\u1ed1 m\u00e0 h\u1ea7u h\u1ebft ng\u01b0\u1eddi v\u1eadn h\u00e0nh coi nh\u01b0 th\u1eddi ti\u1ebft. Nh\u01b0ng n\u0103ng l\u1ef1c k\u1ebft c\u1ea5u kh\u00f4ng ph\u1ea3i l\u00e0 c\u00e2u h\u1ecfi v\u1ec1 h\u00ecnh h\u1ecdc; n\u00f3 l\u00e0 c\u00e2u h\u1ecfi v\u1ec1 l\u1ef1c tr\u00ean chi\u1ec1u d\u00e0i. V\u00e0 m\u1ed9t khi l\u1ef1c \u0111\u00f3 v\u01b0\u1ee3t qu\u00e1 gi\u1edbi h\u1ea1n ch\u1ea3y c\u1ee5c b\u1ed9, ph\u1ea7n kh\u00f4ng bi\u1ebfn d\u1ea1ng d\u1ebbo s\u1ebd mu\u1ed1n tr\u1edf v\u1ec1 tr\u1ea1ng th\u00e1i ban \u0111\u1ea7u.<\/p>\n\n\n\n

    G\u00f3c cu\u1ed1i c\u00f9ng sau khi t\u1ea3i \u0111\u01b0\u1ee3c gi\u1ea3i ph\u00f3ng b\u1eb1ng \u0111\u1ed9 bi\u1ebfn d\u1ea1ng d\u1ebbo m\u00e0 b\u1ea1n \u0111\u00e3 \u00e9p v\u00e0o ch\u1ed7 u\u1ed1n tr\u1eeb \u0111i bi\u1ebfn d\u1ea1ng \u0111\u00e0n h\u1ed3i m\u00e0 v\u1eadt li\u1ec7u ph\u1ee5c h\u1ed3i. B\u1ea1n kh\u00f4ng ki\u1ec3m so\u00e1t vi\u1ec7c ph\u1ee5c h\u1ed3i \u0111\u00f3 b\u1eb1ng hy v\u1ecdng. B\u1ea1n ki\u1ec3m so\u00e1t n\u00f3 b\u1eb1ng h\u00ecnh d\u1ea1ng ch\u00e0y v\u00e0 \u00e1p su\u1ea5t quy tr\u00ecnh. To\u00e1n h\u1ecdc kh\u00f4ng n\u00f3i d\u1ed1i. Ki\u1ec3m tra v\u1ecb tr\u00ed ng\u1ed3i c\u1ee7a b\u1ea1n.<\/p>\n\n\n\n

    Ch\u00e0y nh\u1ecdn so v\u1edbi ch\u00e0y 90\u00b0: Lo\u1ea1i n\u00e0o th\u1ef1c s\u1ef1 ki\u1ec3m so\u00e1t \u0111\u1ed9 \u0111\u00e0n h\u1ed3i ng\u01b0\u1ee3c?<\/h3>\n\n\n\n

    Trong u\u1ed1n kh\u00f4ng ch\u1ea1m \u0111\u00e1y, \u0111\u1ed9 s\u00e2u xuy\u00ean v\u00e0o thi\u1ebft l\u1eadp g\u00f3c khi ch\u1ecbu t\u1ea3i. M\u1ed9t ch\u00e0y duy nh\u1ea5t c\u00f3 th\u1ec3 t\u1ea1o ra 70\u00b0 ho\u1eb7c 130\u00b0 t\u00f9y v\u00e0o h\u00e0nh tr\u00ecnh. \u0110\u00fang l\u00e0 nh\u01b0 v\u1eady. Nh\u01b0ng khi ch\u00fang ta n\u00f3i v\u1ec1 ki\u1ec3m so\u00e1t \u0111\u00e0n h\u1ed3i ng\u01b0\u1ee3c, ch\u00fang ta \u0111ang n\u00f3i \u0111\u1ebfn \u0111i\u1ec1u g\u00ec x\u1ea3y ra sau khi \u0111\u1ea7u tr\u01b0\u1ee3t \u0111i l\u00ean.<\/p>\n\n\n\n

    Th\u1ef1c h\u00e0nh ti\u00eau chu\u1ea9n \u0111\u1ec3 c\u00f3 g\u00f3c ho\u00e0n thi\u1ec7n 90\u00b0 trong th\u00e9p m\u1ec1m l\u00e0 d\u00f9ng ch\u00e0y 85\u00b0 \u0111\u1ebfn 88\u00b0. T\u1ea1i sao kh\u00f4ng d\u00f9ng ch\u00e0y 90\u00b0? B\u1edfi v\u00ec v\u1eadt li\u1ec7u c\u00e0ng c\u1ee9ng th\u00ec \u0111\u1ed9 \u0111\u00e0n h\u1ed3i ng\u01b0\u1ee3c c\u00e0ng l\u1edbn. Th\u00e9p kh\u00f4ng g\u1ec9, th\u00e9p h\u1ee3p kim c\u01b0\u1eddng \u0111\u1ed9 cao, 6061\u2011T6\u2014ch\u00fang \u0111\u1ec1u l\u01b0u tr\u1eef n\u0103ng l\u01b0\u1ee3ng \u0111\u00e0n h\u1ed3i nhi\u1ec1u h\u01a1n t\u1ea1i \u0111\u01b0\u1eddng u\u1ed1n. N\u1ebfu b\u1ea1n d\u00f9ng ch\u00e0y 90\u00b0 v\u00e0 ch\u1ec9 \u201c\u00e9p s\u00e2u h\u01a1n,\u201d b\u1ea1n s\u1ebd t\u0103ng l\u1ef1c v\u00e0 \u0111\u1ed9 l\u1ec7ch trong c\u1ee5m d\u1ee5ng c\u1ee5, nh\u01b0ng b\u1ea1n kh\u00f4ng thay \u0111\u1ed5i t\u1ef7 l\u1ec7 bi\u1ebfn d\u1ea1ng d\u1ebbo\u2013\u0111\u00e0n h\u1ed3i t\u1ea1i \u0111\u1ec9nh u\u1ed1n theo c\u00e1ch c\u00f3 \u00fd ngh\u0129a.<\/p>\n\n\n\n

    M\u1ed9t ch\u00e0y g\u00f3c nh\u1ecdn l\u00e0m t\u0103ng bi\u1ebfn d\u1ea1ng c\u1ee5c b\u1ed9 t\u1ea1i \u0111\u1ec9nh u\u1ed1n v\u1edbi c\u00f9ng kh\u1ea9u \u0111\u1ed9 khu\u00f4n v\u00e0 \u0111\u1ed9 s\u00e2u ch\u1ecdc. Nhi\u1ec1u ph\u1ea7n v\u1eadt li\u1ec7u \u1edf b\u00e1n k\u00ednh trong v\u01b0\u1ee3t qua gi\u1edbi h\u1ea1n ch\u1ea3y. Ph\u1ea7n \u0111\u00e0n h\u1ed3i c\u00f2n l\u1ea1i \u00edt h\u01a1n. Bi\u1ebfn d\u1ea1ng \u0111\u00e0n h\u1ed3i \u00edt h\u01a1n ngh\u0129a l\u00e0 \u0111\u1ed9 \u0111\u00e0n h\u1ed3i ng\u01b0\u1ee3c gi\u1ea3m \u0111i.<\/p>\n\n\n\n

    \u0110\u00f3 kh\u00f4ng ph\u1ea3i l\u00e0 m\u00ea t\u00edn. \u0110\u00f3 l\u00e0 ph\u00e2n b\u1ed1 bi\u1ebfn d\u1ea1ng.<\/p>\n\n\n\n

    Nh\u01b0ng nh\u1ecdn bao nhi\u00eau th\u00ec \u0111\u1ee7, tr\u01b0\u1edbc khi b\u1ea1n b\u1eaft \u0111\u1ea7u ph\u00e1 h\u1ee7y b\u1ec1 m\u1eb7t?<\/p>\n\n\n\n

    T\u1ea1i sao vi\u1ec7c u\u1ed1n qu\u00e1 g\u00f3c \u0111\u00f2i h\u1ecfi nhi\u1ec1u h\u01a1n ch\u1ec9 l\u00e0 m\u1ed9t g\u00f3c nh\u1ecdn<\/h4>\n\n\n\n

    T\u00f4i t\u1eebng th\u1ea5y m\u1ed9t x\u01b0\u1edfng chuy\u1ec3n t\u1eeb ch\u00e0y 90\u00b0 sang ch\u00e0y \u201cb\u00f9\u201d 83\u00b0 cho m\u1ed9t c\u00f4ng vi\u1ec7c b\u1ecb \u0111\u00e0n h\u1ed3i ng\u01b0\u1ee3c kho\u1ea3ng 7\u00b0. H\u1ecd mong ch\u1edd \u0111i\u1ec1u k\u1ef3 di\u1ec7u. Th\u1ee9 h\u1ecd nh\u1eadn \u0111\u01b0\u1ee3c l\u00e0 c\u1ea3i thi\u1ec7n 3\u00b0 v\u00e0 m\u1ed9t v\u1ec7t b\u00f3ng tr\u00ean b\u00e1n k\u00ednh trong.<\/p>\n\n\n\n

    T\u1ea1i sao? V\u00ec h\u1ecd v\u1eabn u\u1ed1n trong kh\u00f4ng kh\u00ed v\u1edbi c\u00f9ng kh\u1ea9u \u0111\u1ed9 V.<\/p>\n\n\n\n

    N\u1ebfu b\u1ea1n mu\u1ed1n gi\u1ea3m \u0111\u00e1ng k\u1ec3 \u0111\u1ed9 \u0111\u00e0n h\u1ed3i ng\u01b0\u1ee3c h\u01a1n v\u00e0i \u0111\u1ed9, b\u1ea1n ph\u1ea3i t\u0103ng d\u00f2ng ch\u1ea3y d\u1ebbo t\u1ea1i \u0111\u1ec9nh u\u1ed1n. \u0110i\u1ec1u \u0111\u00f3 c\u00f3 ngh\u0129a l\u00e0 ho\u1eb7c thu h\u1eb9p kh\u1ea9u \u0111\u1ed9 V (t\u0103ng t\u1ea5n l\u1ef1c tr\u00ean m\u1ed7i inch), ho\u1eb7c chuy\u1ec3n t\u1eeb u\u1ed1n kh\u00f4ng ti\u1ebfp \u0111\u00e1y sang u\u1ed1n ch\u1ea1m \u0111\u00e1y ho\u1eb7c u\u1ed1n t\u1ea1o h\u00ecnh nh\u1eb9, n\u01a1i \u00e1p su\u1ea5t cao duy tr\u00ec bu\u1ed9c v\u1eadt li\u1ec7u \u00e9p v\u00e0o g\u00f3c khu\u00f4n.<\/p>\n\n\n\n

    U\u1ed1n ch\u1ea1m \u0111\u00e1y c\u00f3 th\u1ec3 nh\u00e2n l\u1ef1c y\u00eau c\u1ea7u l\u00ean kho\u1ea3ng n\u0103m l\u1ea7n so v\u1edbi u\u1ed1n kh\u00f4ng ti\u1ebfp \u0111\u00e1y. U\u1ed1n t\u1ea1o h\u00ecnh c\u00f3 th\u1ec3 \u0111\u1ea1t \u0111\u1ebfn m\u01b0\u1eddi l\u1ea7n. \u0110\u00f3 kh\u00f4ng ph\u1ea3i l\u00e0 sai s\u1ed1 l\u00e0m tr\u00f2n\u2014\u0111\u00f3 l\u00e0 quy\u1ebft \u0111\u1ecbnh mang t\u00ednh k\u1ebft c\u1ea5u. N\u1ebfu vi\u1ec7c u\u1ed1n kh\u00f4ng ti\u1ebfp \u0111\u00e1y c\u1ee7a b\u1ea1n d\u00f9ng 30 t\u1ea5n m\u1ed7i m\u00e9t, th\u00ec u\u1ed1n ch\u1ea1m \u0111\u00e1y c\u00f3 th\u1ec3 y\u00eau c\u1ea7u 150. Chi ph\u00ed ph\u1ebf li\u1ec7u t\u0103ng nhanh n\u1ebfu \u0111o\u1ea1n khu\u00f4n y\u1ebfu nh\u1ea5t c\u1ee7a b\u1ea1n ch\u1ecbu t\u1ed1i \u0111a 120.<\/p>\n\n\n\n

    V\u00e0 \u0111i\u1ec1u then ch\u1ed1t l\u00e0: u\u1ed1n ch\u1ea1m \u0111\u00e1y l\u00e0m gi\u1ea3m \u0111\u00e0n h\u1ed3i ng\u01b0\u1ee3c kh\u00f4ng ph\u1ea3i v\u00ec g\u00f3c ch\u00e0y c\u00f3 ph\u00e9p thu\u1eadt, m\u00e0 v\u00ec \u00e1p su\u1ea5t c\u1ee5c b\u1ed9 cao \u00e9p g\u1ea7n nh\u01b0 to\u00e0n b\u1ed9 bi\u1ebfn d\u1ea1ng d\u1ebbo t\u1ea1i \u0111\u1ec9nh u\u1ed1n. B\u1ea1n \u0111ang mua s\u1ef1 \u1ed5n \u0111\u1ecbnh g\u00f3c b\u1eb1ng s\u1ee9c \u00e9p.<\/p>\n\n\n\n

    H\u1ee3p \u0111\u1ed3ng r\u1ea5t \u0111\u01a1n gi\u1ea3n. Bi\u1ebfn d\u1ea1ng d\u1ebbo nhi\u1ec1u h\u01a1n b\u00e2y gi\u1edd ngh\u0129a l\u00e0 h\u1ed3i ph\u1ee5c \u0111\u00e0n h\u1ed3i \u00edt h\u01a1n sau n\u00e0y. To\u00e1n h\u1ecdc kh\u00f4ng n\u00f3i d\u1ed1i. Ki\u1ec3m tra v\u1ecb tr\u00ed ng\u1ed3i c\u1ee7a b\u1ea1n.<\/p>\n\n\n\n

    Nh\u01b0ng l\u00e0m sao b\u1ea1n bi\u1ebft \u0111\u01b0\u1ee3c \u0111\u1ed9 h\u1ed3i ph\u1ee5c s\u1ebd x\u1ea3y ra bao nhi\u00eau tr\u01b0\u1edbc khi b\u1ea1n \u0111\u1ea1p b\u00e0n \u0111\u1ea1p?<\/p>\n\n\n\n

    D\u1ef1 \u0111o\u00e1n \u0111\u1ed9 \u0111\u00e0n h\u1ed3i ng\u01b0\u1ee3c: T\u1ea1i sao \u201cb\u1ed9 nh\u1edb\u201d v\u1eadt li\u1ec7u quy\u1ebft \u0111\u1ecbnh l\u1ef1a ch\u1ecdn g\u00f3c ch\u00e0y c\u1ee7a b\u1ea1n<\/h4>\n\n\n\n

    L\u1ea5y hai t\u1ea5m 4 mm: th\u00e9p m\u1ec1m A36 v\u00e0 th\u00e9p c\u01b0\u1eddng \u0111\u1ed9 cao 100 ksi. C\u00f9ng kh\u1ea9u \u0111\u1ed9 V, c\u00f9ng ch\u00e0y, c\u00f9ng \u0111\u1ed9 s\u00e2u \u00e9p \u0111\u1ea1t 90\u00b0 khi ch\u1ecbu t\u1ea3i.<\/p>\n\n\n\n

    Gi\u1ea3i ph\u00f3ng ch\u00fang.<\/p>\n\n\n\n

    T\u1ea5m th\u00e9p m\u1ec1m c\u00f3 th\u1ec3 \u0111\u00e0n h\u1ed3i ng\u01b0\u1ee3c 2\u00b0. T\u1ea5m c\u01b0\u1eddng \u0111\u1ed9 cao c\u00f3 th\u1ec3 m\u1edf ra 5\u00b0 ho\u1eb7c h\u01a1n. T\u1ea1i sao? V\u00ec gi\u1edbi h\u1ea1n ch\u1ea3y x\u00e1c \u0111\u1ecbnh l\u01b0\u1ee3ng \u1ee9ng su\u1ea5t m\u00e0 v\u1eadt li\u1ec7u c\u00f3 th\u1ec3 ch\u1ecbu m\u1ed9t c\u00e1ch \u0111\u00e0n h\u1ed3i tr\u01b0\u1edbc khi bi\u1ebfn d\u1ea1ng v\u0129nh vi\u1ec5n chi\u1ebfm \u01b0u th\u1ebf. Gi\u1edbi h\u1ea1n ch\u1ea3y c\u00e0ng cao th\u00ec v\u00f9ng \u0111\u00e0n h\u1ed3i trong ti\u1ebft di\u1ec7n u\u1ed1n c\u00e0ng l\u1edbn.<\/p>\n\n\n\n

    \u0110\u1ed9 \u0111\u00e0n h\u1ed3i ng\u01b0\u1ee3c t\u0103ng theo:<\/p>\n\n\n\n