{"id":21362,"date":"2025-03-06T01:52:00","date_gmt":"2025-03-05T17:52:00","guid":{"rendered":"https:\/\/steelprogroup.com\/?p=21362"},"modified":"2025-03-07T18:09:08","modified_gmt":"2025-03-07T10:09:08","slug":"4142-steel","status":"publish","type":"post","link":"https:\/\/steelprogroup.com\/vi\/alloy-steel\/4142-steel\/","title":{"rendered":"Th\u00e9p h\u1ee3p kim AISI 4142 | H\u01b0\u1edbng d\u1eabn s\u1ea3n ph\u1ea9m UNS G41420"},"content":{"rendered":"<p>Trong th\u1ebf gi\u1edbi s\u1ea3n xu\u1ea5t v\u00e0 k\u1ef9 thu\u1eadt, <strong>th\u00e9p 4142<\/strong> l\u00e0 n\u1ec1n t\u1ea3ng cho c\u00e1c b\u1ed9 ph\u1eadn \u0111\u00f2i h\u1ecfi hi\u1ec7u su\u1ea5t m\u1ea1nh m\u1ebd d\u01b0\u1edbi \u00e1p l\u1ef1c. T\u1ea1i SteelPro Group, ch\u00fang t\u00f4i kh\u00f4ng ch\u1ec9 cung c\u1ea5p th\u00e9p 4142 ch\u1ea5t l\u01b0\u1ee3ng cao m\u00e0 c\u00f2n cung c\u1ea5p d\u1ecbch v\u1ee5 \u0111\u1ecbnh c\u1ee1 v\u00e0 gia c\u00f4ng t\u00f9y ch\u1ec9nh.&nbsp;<\/p><p>B\u1ea1n c\u00f3 mu\u1ed1n kh\u00e1m ph\u00e1 th\u1ebf gi\u1edbi th\u00e9p h\u1ee3p kim 4142 kh\u00f4ng? H\u00e3y c\u00f9ng kh\u00e1m ph\u00e1 xem v\u1eadt li\u1ec7u \u0111\u1eb7c bi\u1ec7t n\u00e0y c\u00f3 th\u1ec3 n\u00e2ng t\u1ea7m d\u1ef1 \u00e1n c\u1ee7a b\u1ea1n nh\u01b0 th\u1ebf n\u00e0o.<\/p><h2 class=\"wp-block-heading\">Th\u00e9p 4142 l\u00e0 g\u00ec?<\/h2><p>AISI 4142 l\u00e0 th\u00e9p h\u1ee3p kim cacbon trung b\u00ecnh \u0111\u01b0\u1ee3c bi\u1ebft \u0111\u1ebfn v\u1edbi \u0111\u1ed9 b\u1ec1n, kh\u1ea3 n\u0103ng ch\u1ed1ng m\u00e0i m\u00f2n v\u00e0 \u0111\u1ed9 b\u1ec1n tuy\u1ec7t v\u1eddi. \u1ede tr\u1ea1ng th\u00e1i \u1ee7, 4142 d\u1ec5 gia c\u00f4ng. N\u00f3 c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng bi\u1ebfn d\u1ea1ng \u1edf nhi\u1ec7t \u0111\u1ed9 l\u00ean \u0111\u1ebfn 1000\u00b0F (537\u00b0C). N\u00f3 th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c t\u00ecnh hu\u1ed1ng \u0111\u00f2i h\u1ecfi hi\u1ec7u su\u1ea5t \u0111\u1eb7c bi\u1ec7t d\u01b0\u1edbi \u00e1p su\u1ea5t cao. C\u00e1c \u1ee9ng d\u1ee5ng ph\u1ed5 bi\u1ebfn bao g\u1ed3m tr\u1ee5c cam, thanh khoan, bu l\u00f4ng, kh\u1edbp n\u1ed1i, tr\u1ee5c ch\u00ednh, thanh piston, b\u00e1nh r\u0103ng, van v\u00e0 c\u00e1c th\u00e0nh ph\u1ea7n ch\u1ecbu t\u1ea3i n\u1eb7ng kh\u00e1c.<\/p><h2 class=\"wp-block-heading\">C\u1ea5p th\u00e9p t\u01b0\u01a1ng \u0111\u01b0\u01a1ng AISI 4142<\/h2><p>SteelPro Group \u0111\u1ea3m b\u1ea3o s\u1ea3n ph\u1ea9m 4142 c\u1ee7a ch\u00fang t\u00f4i tu\u00e2n th\u1ee7 c\u00e1c ti\u00eau chu\u1ea9n qu\u1ed1c t\u1ebf. \u0110i\u1ec1u n\u00e0y \u0111\u1ea3m b\u1ea3o s\u1ea3n ph\u1ea9m c\u1ee7a ch\u00fang t\u00f4i tu\u00e2n th\u1ee7 c\u00e1c ti\u00eau chu\u1ea9n ch\u1ea5t l\u01b0\u1ee3ng nghi\u00eam ng\u1eb7t nh\u1ea5t cho nhi\u1ec1u m\u1ee5c \u0111\u00edch s\u1eed d\u1ee5ng.<\/p><figure class=\"wp-block-table\"><table><tbody><tr><td><strong>Ti\u00eau chu\u1ea9n<\/strong><\/td><td><strong>L\u1edbp t\u01b0\u01a1ng \u0111\u01b0\u01a1ng<\/strong><\/td><\/tr><tr><td>Anh<\/td><td>42CrMo<\/td><\/tr><tr><td>ISC<\/td><td>A30422<\/td><\/tr><tr><td>Ti\u00eau chu\u1ea9n ISO<\/td><td>42CrMo4<\/td><\/tr><tr><td>Ti\u00eau chu\u1ea9n ASTM\/AISI<\/td><td>4140, 4142<\/td><\/tr><tr><td>Li\u00ean Hi\u1ec7p Qu\u1ed1c<\/td><td>G41400, G41420<\/td><\/tr><tr><td>Ti\u1ebfng Vi\u1ec7t: Ti\u1ebfng Anh\/DIN<\/td><td>42CrMo4<\/td><\/tr><tr><td>Con s\u1ed1<\/td><td>1.7225<\/td><\/tr><tr><td>Ti\u00eau chu\u1ea9n Nh\u1eadt B\u1ea3n<\/td><td>SCM440, SCM440H<\/td><\/tr><\/tbody><\/table><\/figure><ul class=\"wp-block-list\"><li>C\u00e1c ch\u1ea5t t\u01b0\u01a1ng \u0111\u01b0\u01a1ng kh\u00e1c c\u1ee7a th\u00e9p 4142:&nbsp;<\/li><\/ul><p>UNS G41420, ASTM A322, ASTM A331, ASTM A505, ASTM A519, ASTMA547, SAE J404, SAE J412, SAE J770<\/p><h2 class=\"wp-block-heading\">Th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc c\u1ee7a th\u00e9p 4142<\/h2><figure class=\"wp-block-table\"><table><tbody><tr><td><strong>C\u00e1c y\u1ebfu t\u1ed1<\/strong><\/td><td><strong>N\u1ed9i dung (wt%)<\/strong><\/td><\/tr><tr><td>Cacbon (C)<\/td><td>0.40~0.45<\/td><\/tr><tr><td>Silic (Si)<\/td><td>0.15~0.35<\/td><\/tr><tr><td>Mangan (Mn)<\/td><td>0.75~1.00<\/td><\/tr><tr><td>Ph\u1ed1t pho (P)<\/td><td>\u22640,035<\/td><\/tr><tr><td>L\u01b0u hu\u1ef3nh (S)<\/td><td>\u22640,04<\/td><\/tr><tr><td>Crom (Cr)<\/td><td>0.80~1.10<\/td><\/tr><tr><td>Molip\u0111en (Mo)<\/td><td>0.15~0.25<\/td><\/tr><\/tbody><\/table><\/figure><h2 class=\"wp-block-heading\">4142 T\u00ednh ch\u1ea5t c\u01a1 h\u1ecdc c\u1ee7a th\u00e9p<\/h2><figure class=\"wp-block-table\"><table><tbody><tr><td><strong>T\u00e0i s\u1ea3n<\/strong><\/td><td><strong>H\u1ec7 m\u00e9t<\/strong><\/td><td><strong>Ti\u1ebfng Anh<\/strong><\/td><\/tr><tr><td>\u0110\u1ed9 c\u1ee9ng, Brinell<\/td><td>187~229<\/td><td>187~229<\/td><\/tr><tr><td>\u0110\u1ed9 c\u1ee9ng, Knoop<\/td><td>230<\/td><td>230<\/td><\/tr><tr><td>\u0110\u1ed9 c\u1ee9ng, Rockwell B<\/td><td>94<\/td><td>94<\/td><\/tr><tr><td>\u0110\u1ed9 c\u1ee9ng, Rockwell C<\/td><td>15<\/td><td>15<\/td><\/tr><tr><td>\u0110\u1ed9 c\u1ee9ng, Vickers<\/td><td>218<\/td><td>218<\/td><\/tr><tr><td>M\u00f4 \u0111un \u0111\u00e0n h\u1ed3i<\/td><td>206 GPa<\/td><td>29900 ksi<\/td><\/tr><tr><td>M\u00f4 \u0111un kh\u1ed1i<\/td><td>163 GPa<\/td><td>23600 ksi<\/td><\/tr><tr><td>T\u1ef7 s\u1ed1 Poisson<\/td><td>0.29<\/td><td>0.29<\/td><\/tr><tr><td>Kh\u1ea3 n\u0103ng gia c\u00f4ng<\/td><td>65%<\/td><td>65%<\/td><\/tr><tr><td>M\u00f4 \u0111un c\u1eaft<\/td><td>80,0 GPa<\/td><td>11600 ksi<\/td><\/tr><\/tbody><\/table><\/figure><ul class=\"wp-block-list\"><li>C\u00e1c t\u00ednh ch\u1ea5t c\u01a1 h\u1ecdc trong b\u1ea3ng d\u00e0nh cho th\u00e9p 4142 \u1edf tr\u1ea1ng th\u00e1i \u1ee7 v\u00e0 k\u00e9o ngu\u1ed9i. C\u00e1c t\u00ednh ch\u1ea5t n\u00e0y c\u00f3 th\u1ec3 thay \u0111\u1ed5i t\u00f9y theo c\u00e1c ph\u01b0\u01a1ng ph\u00e1p x\u1eed l\u00fd nhi\u1ec7t kh\u00e1c nhau, ch\u1eb3ng h\u1ea1n nh\u01b0 t\u00f4i ho\u1eb7c ram, \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn \u0111\u1ed9 c\u1ee9ng, \u0111\u1ed9 b\u1ec1n k\u00e9o v\u00e0 hi\u1ec7u su\u1ea5t. C\u00e1c gi\u00e1 tr\u1ecb n\u00ean \u0111\u01b0\u1ee3c xem l\u00e0 \u0111i\u1ec3m tham chi\u1ebfu.<\/li><\/ul><h2 class=\"wp-block-heading\">4142 T\u00ednh ch\u1ea5t v\u1eadt l\u00fd c\u1ee7a th\u00e9p<\/h2><figure class=\"wp-block-table\"><table><tbody><tr><td><strong>T\u00e0i s\u1ea3n<\/strong><\/td><td><strong>H\u1ec7 m\u00e9t<\/strong><\/td><td><strong>Ti\u1ebfng Anh<\/strong><\/td><\/tr><tr><td>T\u1ec9 tr\u1ecdng<\/td><td>7,85g\/cm\u00b3<\/td><td>0,284 lb\/in\u00b3<\/td><\/tr><tr><td>\u0110i\u1ec3m n\u00f3ng ch\u1ea3y<\/td><td>1420\u00b0C<\/td><td>2588\u00b0F<\/td><\/tr><tr><td>Tr\u1ecdng l\u01b0\u1ee3ng ri\u00eang<\/td><td>7.85<\/td><td>0.284<\/td><\/tr><\/tbody><\/table><\/figure><h2 class=\"wp-block-heading\">4142 T\u00ednh ch\u1ea5t nhi\u1ec7t c\u1ee7a th\u00e9p<\/h2><figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><strong>T\u00e0i s\u1ea3n<\/strong><\/td><td><strong>H\u1ec7 m\u00e9t<\/strong><\/td><td><strong>Ti\u1ebfng Anh<\/strong><\/td><\/tr><tr><td>Nhi\u1ec7t dung ri\u00eang<\/td><td>0,473 J\/g-\u00b0C<\/td><td>0,113 BTU\/lb-\u00b0F<\/td><\/tr><tr><td>\u0110\u1ed9 d\u1eabn nhi\u1ec7t<\/td><td>42,6 W\/mK<\/td><td>296 BTU-in\/gi\u1edd-ft\u00b2-\u00b0F<\/td><\/tr><\/tbody><\/table><\/figure><h2 class=\"wp-block-heading\">4142 \u1ee8ng d\u1ee5ng th\u00e9p<\/h2><figure class=\"wp-block-table\"><table><tbody><tr><td><strong>Ng\u00e0nh c\u00f4ng nghi\u1ec7p<\/strong><\/td><td><strong>\u1ee8ng d\u1ee5ng<\/strong><\/td><\/tr><tr><td>\u00d4 t\u00f4<\/td><td>Tr\u1ee5c khu\u1ef7u, thanh truy\u1ec1n, b\u00e1nh r\u0103ng truy\u1ec1n \u0111\u1ed9ng, l\u00f2 xo van, b\u1ed9 ph\u1eadn treo<\/td><\/tr><tr><td>H\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5<\/td><td>C\u00e1c b\u1ed9 ph\u1eadn b\u00e1nh \u0111\u00e1p, c\u00e1c th\u00e0nh ph\u1ea7n c\u1ea5u tr\u00fac m\u00e1y bay, c\u00e1c th\u00e0nh ph\u1ea7n \u0111\u1ed9ng c\u01a1<\/td><\/tr><tr><td>M\u00e1y m\u00f3c c\u00f4ng nghi\u1ec7p<\/td><td>B\u00e1nh r\u0103ng, tr\u1ee5c, v\u00f2ng bi, tr\u1ee5c ch\u00ednh, b\u1ed9 ph\u1eadn th\u1ee7y l\u1ef1c<\/td><\/tr><tr><td>C\u00f4ng c\u1ee5<\/td><td>M\u0169i khoan, d\u1ee5ng c\u1ee5 c\u1eaft, khu\u00f4n r\u00e8n<\/td><\/tr><tr><td>Qu\u00e2n s\u1ef1 v\u00e0 Qu\u1ed1c ph\u00f2ng<\/td><td>N\u00f2ng s\u00fang, bu l\u00f4ng c\u01b0\u1eddng \u0111\u1ed9 cao, c\u00e1c b\u1ed9 ph\u1eadn ch\u1ecbu \u1ee9ng su\u1ea5t\/m\u1ecfi cao<\/td><\/tr><tr><td>D\u1ea7u kh\u00ed<\/td><td>Thanh khoan, xi lanh th\u1ee7y l\u1ef1c<\/td><\/tr><\/tbody><\/table><\/figure><h2 class=\"wp-block-heading\">4142 H\u00ecnh d\u1ea1ng s\u1ea3n ph\u1ea9m th\u00e9p v\u00e0 k\u00edch th\u01b0\u1edbc<\/h2><p>Ch\u00fang t\u00f4i cung c\u1ea5p th\u00e9p 4142 v\u1edbi nhi\u1ec1u h\u00ecnh d\u1ea1ng v\u00e0 k\u00edch th\u01b0\u1edbc kh\u00e1c nhau \u0111\u1ec3 \u0111\u00e1p \u1ee9ng nhi\u1ec1u nhu c\u1ea7u kh\u00e1c nhau. L\u1ef1a ch\u1ecdn c\u1ee7a ch\u00fang t\u00f4i bao g\u1ed3m thanh tr\u00f2n, thanh ph\u1eb3ng, t\u1ea5m, thanh r\u00e8n, t\u1ea5m v\u00e0 \u1ed1ng.<\/p><p>Ch\u00fang t\u00f4i c\u0169ng cung c\u1ea5p d\u1ecbch v\u1ee5 c\u1eaft theo k\u00edch th\u01b0\u1edbc c\u00e1 nh\u00e2n v\u00e0 chi\u1ec1u d\u00e0i ch\u00ednh x\u00e1c \u0111\u1ec3 \u0111\u00e1p \u1ee9ng nhu c\u1ea7u c\u1ee5 th\u1ec3 c\u1ee7a d\u1ef1 \u00e1n. S\u1ef1 linh ho\u1ea1t n\u00e0y \u0111\u1ea3m b\u1ea3o ch\u00fang t\u00f4i c\u00f3 th\u1ec3 cung c\u1ea5p ch\u00ednh x\u00e1c nh\u1eefng g\u00ec b\u1ea1n c\u1ea7n cho \u1ee9ng d\u1ee5ng c\u1ee7a m\u00ecnh.<\/p><figure class=\"wp-block-table\"><table >th\u00e2n&gt;<tr><td><strong>M\u1eabu s\u1ea3n ph\u1ea9m<\/strong><\/td><td><strong>Ph\u1ea1m vi k\u00edch th\u01b0\u1edbc (H\u1ec7 m\u00e9t)<\/strong><\/td><td><strong>Ph\u1ea1m vi k\u00edch th\u01b0\u1edbc (Ti\u1ebfng Anh)<\/strong><\/td><\/tr><tr><td>Thanh tr\u00f2n<\/td><td>\u0110\u01b0\u1eddng k\u00ednh: 10~300 mmChi\u1ec1u d\u00e0i: 1000~6000 mm<\/td><td>\u0110\u01b0\u1eddng k\u00ednh: 0,39 ~ 11,81 inch Chi\u1ec1u d\u00e0i: 39,37 ~ 236,22 inch<\/td><\/tr><tr><td>Thanh ph\u1eb3ng<\/td><td>Chi\u1ec1u r\u1ed9ng: 20~500 mm\u0110\u1ed9 d\u00e0y: 3~50 mmChi\u1ec1u d\u00e0i: 1000~6000 mm<\/td><td>Chi\u1ec1u r\u1ed9ng: 0,79~19,69 in \u0110\u1ed9 d\u00e0y: 0,12~1,97 in Chi\u1ec1u d\u00e0i: 39,37~236,22 in<\/td><\/tr><tr><td>\u0110\u0129a<\/td><td>\u0110\u1ed9 d\u00e0y: 5~100 mmChi\u1ec1u d\u00e0i: 1000~6000 mm<\/td><td>\u0110\u1ed9 d\u00e0y: 0,20~3,94 in Chi\u1ec1u d\u00e0i: 39,37~236,22 in<\/td><\/tr><tr><td>Thanh r\u00e8n<\/td><td>\u0110\u01b0\u1eddng k\u00ednh: 50~500 mmChi\u1ec1u d\u00e0i: 1000~6000 mm<\/td><td>\u0110\u01b0\u1eddng k\u00ednh: 1,97 ~ 19,69 inch Chi\u1ec1u d\u00e0i: 39,37 ~ 236,22 inch<\/td><\/tr><tr><td>T\u1ea5m tr\u1ea3i gi\u01b0\u1eddng<\/td><td>\u0110\u1ed9 d\u00e0y: 1~12 mmChi\u1ec1u d\u00e0i: 1000~4000 mm<\/td><td>\u0110\u1ed9 d\u00e0y: 0,04~0,47 in Chi\u1ec1u d\u00e0i: 39,37~157,48 in<\/td><\/tr><tr><td>\u1ed0ng\/\u1ed0ng<\/td><td>\u0110\u01b0\u1eddng k\u00ednh: 20~200 mm\u0110\u1ed9 d\u00e0y: 2~20 mmChi\u1ec1u d\u00e0i: 1000~6000 mm<\/td><td>\u0110\u01b0\u1eddng k\u00ednh: 0,79~7,87 in \u0110\u1ed9 d\u00e0y: 0,08~0,79 in Chi\u1ec1u d\u00e0i: 39,37~236,22 in<\/td><\/tr><\/tbody><\/table><\/figure><h2 class=\"wp-block-heading\">4142 Quy tr\u00ecnh r\u00e8n th\u00e9p<\/h2><p>Qu\u00e1 tr\u00ecnh r\u00e8n th\u00e9p 4142 b\u1eaft \u0111\u1ea7u b\u1eb1ng c\u00e1ch nung n\u00f3ng th\u00e9p \u1edf nhi\u1ec7t \u0111\u1ed9 1.150 \u0111\u1ebfn 1.200\u00b0C (2.100 \u0111\u1ebfn 2.190\u00b0F). Khi \u0111\u1ea1t \u0111\u01b0\u1ee3c h\u00ecnh d\u1ea1ng mong mu\u1ed1n, th\u00e9p s\u1ebd \u0111\u01b0\u1ee3c l\u00e0m ngu\u1ed9i ch\u1eadm \u0111\u1ec3 ng\u0103n ng\u1eeba \u1ee9ng su\u1ea5t b\u00ean trong c\u00f3 th\u1ec3 l\u00e0m y\u1ebfu v\u1eadt li\u1ec7u.<\/p><h2 class=\"wp-block-heading\">4142 X\u1eed l\u00fd nhi\u1ec7t th\u00e9p<\/h2><ul class=\"wp-block-list\"><li><strong>L\u00e0m ngu\u1ed9i<\/strong>: \u0110\u1ea7u ti\u00ean, th\u00e9p \u0111\u01b0\u1ee3c nung n\u00f3ng \u0111\u1ebfn <strong>850 \u0111\u1ebfn 880\u00b0C (1.560 \u0111\u1ebfn 1.620\u00b0F)<\/strong> v\u00e0 l\u00e0m ngu\u1ed9i nhanh, th\u01b0\u1eddng l\u00e0 trong d\u1ea7u ho\u1eb7c n\u01b0\u1edbc, \u0111\u1ec3 gi\u1eef nguy\u00ean \u0111\u1ed9 c\u1ee9ng.<\/li>\n\n<li><strong>L\u00e0m ngu\u1ed9i<\/strong>: Sau khi t\u00f4i, nung l\u1ea1i th\u00e9p \u0111\u1ec3 <strong>400 \u0111\u1ebfn 650\u00b0C (750 \u0111\u1ebfn 1.200\u00b0F)<\/strong>B\u01b0\u1edbc n\u00e0y l\u00e0m gi\u1ea3m \u0111\u1ed9 gi\u00f2n nh\u01b0ng v\u1eabn gi\u1eef \u0111\u01b0\u1ee3c \u0111\u1ed9 b\u1ec1n c\u1ea7n thi\u1ebft cho c\u00e1c \u1ee9ng d\u1ee5ng th\u1ef1c t\u1ebf.<\/li><\/ul><h2 class=\"wp-block-heading\">4142 Gia c\u00f4ng th\u00e9p<\/h2><p>Gia c\u00f4ng <strong>th\u00e9p 4142<\/strong> c\u00f3 th\u1ec3 l\u00e0 th\u00e1ch th\u1ee9c do \u0111\u1ed9 c\u1ee9ng c\u1ee7a n\u00f3, \u0111\u1eb7c bi\u1ec7t l\u00e0 \u1edf tr\u1ea1ng th\u00e1i \u0111\u01b0\u1ee3c x\u1eed l\u00fd nhi\u1ec7t. S\u1eed d\u1ee5ng c\u00e1c c\u00f4ng c\u1ee5 l\u00e0m b\u1eb1ng <strong>cacbua<\/strong> ho\u1eb7c <strong>th\u00e9p t\u1ed1c \u0111\u1ed9 cao (HSS)<\/strong> \u0111\u1ec3 c\u1eaft hi\u1ec7u qu\u1ea3. T\u1ed1c \u0111\u1ed9 c\u1eaft \u0111\u01b0\u1ee3c khuy\u1ebfn ngh\u1ecb cho <strong>th\u00e9p 4142<\/strong> thay \u0111\u1ed5i gi\u1eefa <strong>35 \u0111\u1ebfn 70 m\/ph\u00fat (115 \u0111\u1ebfn 230 ft\/ph\u00fat)<\/strong>, t\u00f9y thu\u1ed9c v\u00e0o \u0111\u1ed9 c\u1ee9ng c\u1ee7a th\u00e9p.<\/p><h2 class=\"wp-block-heading\">4142 H\u00e0n th\u00e9p<\/h2><p>H\u00e0n <strong>th\u00e9p 4142<\/strong> \u0111\u00f2i h\u1ecfi ph\u1ea3i qu\u1ea3n l\u00fd nhi\u1ec7t c\u1ea9n th\u1eadn \u0111\u1ec3 tr\u00e1nh n\u1ee9t ho\u1eb7c bi\u1ebfn d\u1ea1ng. Qu\u00e1 tr\u00ecnh n\u00e0y th\u01b0\u1eddng tu\u00e2n theo c\u00e1c b\u01b0\u1edbc sau:<\/p><ol class=\"wp-block-list\"><li><strong>L\u00e0m n\u00f3ng tr\u01b0\u1edbc<\/strong>:Th\u00e9p ph\u1ea3i \u0111\u01b0\u1ee3c nung n\u00f3ng tr\u01b0\u1edbc \u0111\u1ec3 <strong>150 \u0111\u1ebfn 200\u00b0C (300 \u0111\u1ebfn 400\u00b0F)<\/strong>, \u0111\u1eb7c bi\u1ec7t \u0111\u1ed1i v\u1edbi c\u00e1c ph\u1ea7n d\u00e0y h\u01a1n, \u0111\u1ec3 gi\u1ea3m thi\u1ec3u nguy c\u01a1 s\u1ed1c nhi\u1ec7t v\u00e0 n\u1ee9t v\u1ee1.<\/li>\n\n<li><strong>Ph\u01b0\u01a1ng ph\u00e1p h\u00e0n<\/strong>: <strong>TIG<\/strong> V\u00e0 <strong>H\u00e0n MIG<\/strong> l\u00e0 ph\u01b0\u01a1ng ph\u00e1p t\u1ed1t nh\u1ea5t \u0111\u1ec3 h\u00e0n <strong>th\u00e9p 4142<\/strong>, cho ph\u00e9p ki\u1ec3m so\u00e1t ch\u00ednh x\u00e1c h\u1ed3 h\u00e0n. Trong khi <strong>h\u00e0n que<\/strong> l\u00e0 kh\u1ea3 thi, nh\u01b0ng n\u00f3 \u0111\u00f2i h\u1ecfi s\u1ef1 ch\u00fa \u00fd nhi\u1ec1u h\u01a1n \u0111\u1ebfn t\u1eebng chi ti\u1ebft v\u00e0 k\u1ef9 n\u0103ng.<\/li>\n\n<li><strong>X\u1eed l\u00fd nhi\u1ec7t sau khi h\u00e0n<\/strong>:\u0110\u1ec3 gi\u1ea3m \u1ee9ng su\u1ea5t v\u00e0 gi\u1ea3m nguy c\u01a1 n\u1ee9t, th\u00e0nh ph\u1ea7n h\u00e0n ph\u1ea3i tr\u1ea3i qua qu\u00e1 tr\u00ecnh t\u00f4i luy\u1ec7n sau h\u00e0n \u1edf <strong>450 \u0111\u1ebfn 650\u00b0C (850 \u0111\u1ebfn 1.200\u00b0F)<\/strong>.<\/li><\/ol><p>SteelPro Group cung c\u1ea5p \u0111\u00e1ng tin c\u1eady <strong>d\u1ecbch v\u1ee5 h\u00e0n<\/strong> v\u00ec <strong>th\u00e9p 4142<\/strong>, \u0111\u1ea3m b\u1ea3o m\u1ed1i h\u00e0n c\u00f3 \u0111\u1ed9 b\u1ec1n cao v\u00e0 ch\u1eafc ch\u1eafn cho c\u00e1c \u1ee9ng d\u1ee5ng \u0111\u00f2i h\u1ecfi kh\u1eaft khe.<\/p><h2 class=\"wp-block-heading\">\u0110\u1eb7c \u0111i\u1ec3m ch\u00ednh c\u1ee7a th\u00e9p h\u1ee3p kim 4142<\/h2><h3 class=\"wp-block-heading\">Thu\u1eadn l\u1ee3i<\/h3><ul class=\"wp-block-list\"><li>\u0110\u1ed9 b\u1ec1n v\u00e0 \u0111\u1ed9 d\u1ebbo dai cao<\/li>\n\n<li>Kh\u1ea3 n\u0103ng ch\u1ed1ng m\u00e0i m\u00f2n v\u00e0 ch\u1ed1ng m\u1ecfi tuy\u1ec7t v\u1eddi<\/li>\n\n<li>\u0110\u1ed9 linh ho\u1ea1t x\u1eed l\u00fd nhi\u1ec7t t\u1ed1t<\/li>\n\n<li>Kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n \u0111\u01b0\u1ee3c c\u1ea3i thi\u1ec7n nh\u1edd h\u00e0m l\u01b0\u1ee3ng crom<\/li><\/ul><h3 class=\"wp-block-heading\">Nh\u01b0\u1ee3c \u0111i\u1ec3m<\/h3><ul class=\"wp-block-list\"><li>Chi ph\u00ed cao h\u01a1n so v\u1edbi th\u00e9p cacbon<\/li>\n\n<li>Kh\u00f3 gia c\u00f4ng \u1edf tr\u1ea1ng th\u00e1i c\u1ee9ng<\/li>\n\n<li>Kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n h\u1ea1n ch\u1ebf so v\u1edbi th\u00e9p kh\u00f4ng g\u1ec9<\/li>\n\n<li>Y\u00eau c\u1ea7u gia nhi\u1ec7t tr\u01b0\u1edbc v\u00e0 x\u1eed l\u00fd sau khi h\u00e0n<\/li><\/ul><h2 class=\"wp-block-heading\">Th\u00e9p 4140 so v\u1edbi 4142<\/h2><p>Th\u00e9p 4140 v\u00e0 4142 \u0111\u1ec1u l\u00e0 th\u00e9p h\u1ee3p kim cacbon trung b\u00ecnh. \u0110\u1ed1i v\u1edbi c\u00e1c th\u00e0nh ph\u1ea7n \u0111\u00f2i h\u1ecfi \u0111\u1ed9 b\u1ec1n v\u00e0 kh\u1ea3 n\u0103ng ch\u1ed1ng m\u00e0i m\u00f2n \u0111\u1eb7c bi\u1ec7t, th\u00e9p 4140 l\u00e0 l\u1ef1a ch\u1ecdn t\u1ed1t h\u01a1n. \u0110\u1ed1i v\u1edbi c\u00e1c \u1ee9ng d\u1ee5ng nh\u1ea1y c\u1ea3m v\u1ec1 chi ph\u00ed, trong \u0111\u00f3 kh\u1ea3 n\u0103ng gia c\u00f4ng l\u00e0 \u01b0u ti\u00ean h\u00e0ng \u0111\u1ea7u, th\u00e9p 4142 cung c\u1ea5p gi\u1ea3i ph\u00e1p gi\u00e1 c\u1ea3 ph\u1ea3i ch\u0103ng h\u01a1n.&nbsp;<\/p><p><a href=\"https:\/\/steelprogroup.com\/vi\/special-steel\/aisi-4140\/\"><strong>th\u00e9p 4140<\/strong><\/a>, ch\u1ee9a h\u00e0m l\u01b0\u1ee3ng crom v\u00e0 molypden cao, mang l\u1ea1i kh\u1ea3 n\u0103ng t\u00f4i luy\u1ec7n, \u0111\u1ed9 b\u1ec1n v\u00e0 \u0111\u1ed9 c\u1ee9ng \u0111\u01b0\u1ee3c c\u1ea3i thi\u1ec7n, khi\u1ebfn n\u00f3 tr\u1edf n\u00ean ho\u00e0n h\u1ea3o cho c\u00e1c \u1ee9ng d\u1ee5ng \u0111\u00f2i h\u1ecfi kh\u1eaft khe nh\u01b0 b\u00e1nh r\u0103ng v\u00e0 tr\u1ee5c khu\u1ef7u. M\u1eb7t kh\u00e1c, <strong>th\u00e9p 4142<\/strong>, ch\u1ee9a h\u00e0m l\u01b0\u1ee3ng c\u00e1c nguy\u00ean t\u1ed1 n\u00e0y th\u1ea5p h\u01a1n, c\u00f3 \u0111\u1ed9 b\u1ec1n t\u1ed1t nh\u01b0ng kh\u1ea3 n\u0103ng ch\u1ed1ng m\u00e0i m\u00f2n k\u00e9m h\u01a1n. \u0110i\u1ec1u n\u00e0y l\u00e0m cho n\u00f3 ph\u00f9 h\u1ee3p h\u01a1n v\u1edbi c\u00e1c th\u00e0nh ph\u1ea7n \u00edt ch\u1ecbu \u1ee9ng su\u1ea5t h\u01a1n, nh\u01b0 piston v\u00e0 tr\u1ee5c th\u1ee7y l\u1ef1c.<\/p><p>V\u1ec1 kh\u1ea3 n\u0103ng gia c\u00f4ng, <strong>th\u00e9p 4142<\/strong> d\u1ec5 gia c\u00f4ng h\u01a1n, cho ph\u00e9p s\u1ea3n xu\u1ea5t nhanh h\u01a1n v\u00e0 chi ph\u00ed gia c\u00f4ng th\u1ea5p h\u01a1n. <strong>th\u00e9p 4140<\/strong>, trong khi cung c\u1ea5p hi\u1ec7u su\u1ea5t t\u1ed1t h\u01a1n trong m\u00f4i tr\u01b0\u1eddng c\u00f3 \u1ee9ng su\u1ea5t cao, nh\u01b0ng kh\u00f3 gia c\u00f4ng h\u01a1n<\/p><h2 class=\"wp-block-heading\">4142 Gi\u1ea3i ph\u00e1p t\u00f9y ch\u1ec9nh th\u00e9p v\u00e0 x\u1eed l\u00fd cu\u1ed1i c\u00f9ng<\/h2><p>Cam k\u1ebft c\u1ee7a SteelPro Group v\u1ec1 ch\u1ea5t l\u01b0\u1ee3ng v\u00e0 \u0111\u1ed9 ch\u00ednh x\u00e1c \u0111\u1ea3m b\u1ea3o r\u1eb1ng d\u00f9 b\u1ea1n c\u1ea7n <strong>th\u00e9p 4142<\/strong> \u0111\u1ec3 r\u00e8n, x\u1eed l\u00fd nhi\u1ec7t ho\u1eb7c gia c\u00f4ng t\u00f9y ch\u1ec9nh, b\u1ea1n s\u1ebd nh\u1eadn \u0111\u01b0\u1ee3c v\u1eadt li\u1ec7u h\u00e0ng \u0111\u1ea7u ph\u00f9 h\u1ee3p v\u1edbi nhu c\u1ea7u c\u1ee7a m\u00ecnh. H\u00e3y tin t\u01b0\u1edfng ch\u00fang t\u00f4i cho d\u1ef1 \u00e1n ti\u1ebfp theo c\u1ee7a b\u1ea1n\u2014chuy\u00ean m\u00f4n c\u1ee7a ch\u00fang t\u00f4i trong <strong>th\u00e9p 4142<\/strong> \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 tin c\u1eady v\u00e0 hi\u1ec7u su\u1ea5t m\u1ecdi l\u00fac.<\/p><p><\/p>","protected":false},"excerpt":{"rendered":"<p>In the world of manufacturing and engineering, 4142 steel is a cornerstone for parts that require robust performance under stress. [&hellip;]<\/p>","protected":false},"author":12,"featured_media":21356,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_eb_attr":"","rank_math_lock_modified_date":false,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[4308],"tags":[],"class_list":["post-21362","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-alloy-steel"],"acf":[],"_links":{"self":[{"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/posts\/21362","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/users\/12"}],"replies":[{"embeddable":true,"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/comments?post=21362"}],"version-history":[{"count":0,"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/posts\/21362\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/media\/21356"}],"wp:attachment":[{"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/media?parent=21362"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/categories?post=21362"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/tags?post=21362"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}