{"id":20136,"date":"2024-12-30T11:36:00","date_gmt":"2024-12-30T03:36:00","guid":{"rendered":"https:\/\/steelprogroup.com\/?p=20136"},"modified":"2025-01-14T12:00:30","modified_gmt":"2025-01-14T04:00:30","slug":"l6","status":"publish","type":"post","link":"https:\/\/steelprogroup.com\/vi\/tool-steel\/grades\/l6\/","title":{"rendered":"Th\u00e9p c\u00f4ng c\u1ee5 L6 | SKT4 | 1.2713: T\u00ednh ch\u1ea5t, D\u1eef li\u1ec7u, S\u1ea3n ph\u1ea9m"},"content":{"rendered":"<p class=\"wp-block-paragraph\">T\u1ea1i SteelPro Group, ch\u00fang t\u00f4i cung c\u1ea5p c\u00e1c s\u1ea3n ph\u1ea9m th\u00e9p c\u00f4ng c\u1ee5 L6 ch\u1ea5t l\u01b0\u1ee3ng cao \u0111\u00e1p \u1ee9ng c\u00e1c ti\u00eau chu\u1ea9n qu\u1ed1c t\u1ebf nh\u01b0 ASTM A681, SAE J437 v\u00e0 J438. V\u1edbi h\u01a1n m\u1ed9t th\u1eadp k\u1ef7 kinh nghi\u1ec7m v\u00e0 ph\u1ea3n h\u1ed3i t\u00edch c\u1ef1c t\u1eeb kh\u00e1ch h\u00e0ng, ch\u00fang t\u00f4i l\u00e0 \u0111\u1ed1i t\u00e1c \u0111\u00e1ng tin c\u1eady c\u1ee7a b\u1ea1n v\u1ec1 c\u00e1c gi\u1ea3i ph\u00e1p th\u00e9p c\u00f4ng c\u1ee5 \u0111\u00e1ng tin c\u1eady v\u00e0 b\u1ec1n b\u1ec9.<\/p><h2 class=\"wp-block-heading\">Th\u00e9p c\u00f4ng c\u1ee5 L6 l\u00e0 g\u00ec?<\/h2><p class=\"wp-block-paragraph\">Th\u00e9p c\u00f4ng c\u1ee5 L6 l\u00e0 th\u00e9p h\u1ee3p kim \u0111a n\u0103ng, t\u00f4i d\u1ea7u. N\u00f3 c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng va \u0111\u1eadp t\u1ed1t do h\u00e0m l\u01b0\u1ee3ng niken cao. Th\u00e9p L6 duy tr\u00ec \u0111\u1ed9 c\u1ee9ng 60 HRC tr\u1edf l\u00ean v\u1edbi \u0111\u1ed9 d\u00e0y ti\u1ebft di\u1ec7n l\u00ean \u0111\u1ebfn 75 mm (3 inch). N\u00f3 l\u00fd t\u01b0\u1edfng cho c\u00e1c c\u00f4ng c\u1ee5, khu\u00f4n m\u1eabu v\u00e0 c\u00e1c b\u1ed9 ph\u1eadn m\u00e1y \u0111\u00f2i h\u1ecfi s\u1ef1 c\u00e2n b\u1eb1ng gi\u1eefa \u0111\u1ed9 c\u1ee9ng v\u00e0 \u0111\u1ed9 d\u1ebbo dai nh\u01b0 tr\u1ee5c ch\u00ednh, cam, m\u00e2m c\u1eb7p v\u00e0 k\u1eb9p collet.<\/p><p class=\"wp-block-paragraph\">Th\u00e9p d\u1ee5ng c\u1ee5 L6 c\u00f3 kh\u1ea3 n\u0103ng gia c\u00f4ng t\u1ed1t, \u0111\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1 \u1edf m\u1ee9c 90% \u0111\u1ed1i v\u1edbi th\u00e9p h\u1ee3p kim th\u1ea5p nh\u00f3m W v\u00e0 75% \u0111\u1ed1i v\u1edbi th\u00e9p cacbon 1%.<\/p><h3 class=\"wp-block-heading\">Th\u00e9p L6 Bainite l\u00e0 g\u00ec?<\/h3><p class=\"wp-block-paragraph\">Th\u00e9p bainite L6 l\u00e0 m\u1ed9t bi\u1ebfn th\u1ec3 c\u1ee7a th\u00e9p c\u00f4ng c\u1ee5 L6 tr\u1ea3i qua qu\u00e1 tr\u00ecnh x\u1eed l\u00fd nhi\u1ec7t bao g\u1ed3m l\u00e0m m\u00e1t c\u00f3 ki\u1ec3m so\u00e1t sau khi austenit h\u00f3a. Qu\u00e1 tr\u00ecnh bi\u1ebfn \u0111\u1ed5i bainite th\u01b0\u1eddng x\u1ea3y ra \u1edf nhi\u1ec7t \u0111\u1ed9 t\u1eeb 250\u00b0C \u0111\u1ebfn 550\u00b0C (482\u00b0F \u0111\u1ebfn 1022\u00b0F). So v\u1edbi th\u00e9p martensitic L6 ti\u00eau chu\u1ea9n, n\u00f3 c\u00f3 \u0111\u1ed9 b\u1ec1n v\u00e0 kh\u1ea3 n\u0103ng ch\u1ed1ng m\u00e0i m\u00f2n cao h\u01a1n.&nbsp;<\/p><h2 class=\"wp-block-heading\">C\u1ea5p th\u00e9p t\u01b0\u01a1ng \u0111\u01b0\u01a1ng L6<\/h2><p class=\"wp-block-paragraph\">D\u01b0\u1edbi \u0111\u00e2y l\u00e0 b\u1ea3ng c\u00e1c c\u1ea5p ti\u00eau chu\u1ea9n v\u00e0 t\u01b0\u01a1ng \u0111\u01b0\u01a1ng c\u1ee7a th\u00e9p c\u00f4ng c\u1ee5 L6:<\/p><figure class=\"wp-block-table\"><table><tbody><tr><td><strong>Ti\u00eau chu\u1ea9n<\/strong><\/td><td>Anh 1299<\/td><td>Ti\u00eau chu\u1ea9n ASTMA681<\/td><td>Li\u00ean Hi\u1ec7p Qu\u1ed1c<\/td><td>Ti\u00eau chu\u1ea9n DIN17350<\/td><td>Ti\u00eau chu\u1ea9n ISO4957<\/td><td>Ti\u00eau chu\u1ea9n JIS G4404<\/td><\/tr><tr><td><strong>\u0110i\u1ec3m s\u1ed1<\/strong><\/td><td>5CrNiMo<\/td><td>L6<\/td><td>UNS T61206<\/td><td>Ti\u00eau chu\u1ea9n DIN 1.2713<\/td><td>55NiCrMoV7<\/td><td>SKT4<\/td><\/tr><\/tbody><\/table><\/figure><h2 class=\"wp-block-heading\">L6 S\u1ea3n ph\u1ea9m th\u00e9p c\u00f4ng c\u1ee5 h\u00ecnh th\u1ee9c v\u00e0 ph\u1ea1m vi cung c\u1ea5p<\/h2><p class=\"wp-block-paragraph\">Th\u00e9p L6 c\u1ee7a ch\u00fang t\u00f4i c\u00f3 nhi\u1ec1u d\u1ea1ng th\u00f4ng d\u1ee5ng nh\u01b0 thanh, r\u00e8n, t\u1ea5m, tr\u00f2n, ph\u00f4i v\u00e0 t\u1ea5m, v\u1edbi k\u00edch th\u01b0\u1edbc \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf ri\u00eang \u0111\u1ec3 \u0111\u00e1p \u1ee9ng nhu c\u1ea7u c\u1ee5 th\u1ec3 c\u1ee7a kh\u00e1ch h\u00e0ng.&nbsp;<\/p><figure class=\"wp-block-table\"><table><tbody><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 (Anh)<\/strong><\/td><\/tr><tr><td rowspan=\"2\">Thanh<\/td><td>\u0110\u01b0\u1eddng k\u00ednh: 6 mm \u0111\u1ebfn 500 mm<\/td><td>\u0110\u01b0\u1eddng k\u00ednh: 0,24 inch \u0111\u1ebfn 20 inch<\/td><\/tr><tr><td>Chi\u1ec1u d\u00e0i: 1000 mm \u0111\u1ebfn 4000 mm<\/td><td>Chi\u1ec1u d\u00e0i: 40 inch \u0111\u1ebfn 157 inch<\/td><\/tr><tr><td rowspan=\"2\">R\u00e8n<\/td><td>\u0110\u01b0\u1eddng k\u00ednh: 25 mm \u0111\u1ebfn 1200 mm<\/td><td>\u0110\u01b0\u1eddng k\u00ednh: 1 inch \u0111\u1ebfn 47 inch<\/td><\/tr><tr><td>Chi\u1ec1u d\u00e0i: 100 mm \u0111\u1ebfn 3000 mm<\/td><td>Chi\u1ec1u d\u00e0i: 4 inch \u0111\u1ebfn 118 inch<\/td><\/tr><tr><td rowspan=\"3\">\u0110\u0129a<\/td><td>\u0110\u1ed9 d\u00e0y: 5 mm \u0111\u1ebfn 200 mm<\/td><td>\u0110\u1ed9 d\u00e0y: 0,2 inch \u0111\u1ebfn 7,9 inch<\/td><\/tr><tr><td>Chi\u1ec1u r\u1ed9ng: 100 mm \u0111\u1ebfn 2000 mm<\/td><td>Chi\u1ec1u r\u1ed9ng: 4 inch \u0111\u1ebfn 79 inch<\/td><\/tr><tr><td>Chi\u1ec1u d\u00e0i: 1000 mm \u0111\u1ebfn 4000 mm<\/td><td>Chi\u1ec1u d\u00e0i: 40 inch \u0111\u1ebfn 157 inch<\/td><\/tr><tr><td rowspan=\"2\">V\u00f2ng tr\u00f2n<\/td><td>\u0110\u01b0\u1eddng k\u00ednh: 10 mm \u0111\u1ebfn 400 mm<\/td><td>\u0110\u01b0\u1eddng k\u00ednh: 0,4 inch \u0111\u1ebfn 15,7 inch<\/td><\/tr><tr><td>Chi\u1ec1u d\u00e0i: 1000 mm \u0111\u1ebfn 4000 mm<\/td><td>Chi\u1ec1u d\u00e0i: 40 inch \u0111\u1ebfn 157 inch<\/td><\/tr><tr><td rowspan=\"3\">Kho\u1ea3ng tr\u1ed1ng<\/td><td>\u0110\u1ed9 d\u00e0y: 20 mm \u0111\u1ebfn 200 mm<\/td><td>\u0110\u1ed9 d\u00e0y: 0,8 inch \u0111\u1ebfn 7,9 inch<\/td><\/tr><tr><td>Chi\u1ec1u r\u1ed9ng: 100 mm \u0111\u1ebfn 1000 mm<\/td><td>Chi\u1ec1u r\u1ed9ng: 4 inch \u0111\u1ebfn 39 inch<\/td><\/tr><tr><td>Chi\u1ec1u d\u00e0i: 100 mm \u0111\u1ebfn 3000 mm<\/td><td>Chi\u1ec1u d\u00e0i: 4 inch \u0111\u1ebfn 118 inch<\/td><\/tr><tr><td rowspan=\"3\">T\u1ea5m tr\u1ea3i gi\u01b0\u1eddng<\/td><td>\u0110\u1ed9 d\u00e0y: 2 mm \u0111\u1ebfn 50 mm<\/td><td>\u0110\u1ed9 d\u00e0y: 0,08 inch \u0111\u1ebfn 2 inch<\/td><\/tr><tr><td>Chi\u1ec1u r\u1ed9ng: 100 mm \u0111\u1ebfn 1500 mm<\/td><td>Chi\u1ec1u r\u1ed9ng: 4 inch \u0111\u1ebfn 59 inch<\/td><\/tr><tr><td>Chi\u1ec1u d\u00e0i: 1000 mm \u0111\u1ebfn 3000 mm<\/td><td>Chi\u1ec1u d\u00e0i: 40 inch \u0111\u1ebfn 118 inch<\/td><\/tr><\/tbody><\/table><\/figure><h2 class=\"wp-block-heading\">Th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc c\u1ee7a th\u00e9p c\u00f4ng c\u1ee5 L6<\/h2><figure class=\"wp-block-table\"><table><tbody><tr><td><strong>Y\u1ebfu t\u1ed1<\/strong><\/td><td><strong>Th\u00e0nh ph\u1ea7n<\/strong><\/td><\/tr><tr><td>Cacbon (C)<\/td><td>0.60 &#8211; 0.75 %<\/td><\/tr><tr><td>Crom (Cr)<\/td><td>0.60 &#8211; 1.2 %<\/td><\/tr><tr><td>\u0110\u1ed3ng (Cu)<\/td><td>\u2264 0,25 %<\/td><\/tr><tr><td>S\u1eaft (Fe)<\/td><td>93.6 &#8211; 97.1 %<\/td><\/tr><tr><td>Mangan (Mn)<\/td><td>0.25 &#8211; 0.80 %<\/td><\/tr><tr><td>Molip\u0111en (Mo)<\/td><td>\u2264 0,50 %<\/td><\/tr><tr><td>Niken (Ni)<\/td><td>1.25 &#8211; 2.0 %<\/td><\/tr><tr><td>Ph\u1ed1t pho (P)<\/td><td>\u2264 0,030 %<\/td><\/tr><tr><td>Silic (Si)<\/td><td>\u2264 0,50 %<\/td><\/tr><tr><td>L\u01b0u hu\u1ef3nh (S)<\/td><td>\u2264 0,030 %<\/td><\/tr><tr><td>Vanadi (V)<\/td><td>0.20 &#8211; 0.30 %<\/td><\/tr><\/tbody><\/table><\/figure><h2 class=\"wp-block-heading\">T\u00ednh ch\u1ea5t v\u1eadt l\u00fd c\u1ee7a th\u00e9p c\u00f4ng c\u1ee5 L6<\/h2><figure class=\"wp-block-table\"><table><tbody><tr><td><strong>T\u00e0i s\u1ea3n<\/strong><\/td><td><strong>Gi\u00e1 tr\u1ecb s\u1ed1 li\u1ec7u<\/strong><\/td><td><strong>Gi\u00e1 tr\u1ecb \u0110\u1ebf qu\u1ed1c<\/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>1421 \u00b0C<\/td><td>2590 \u00b0F<\/td><\/tr><tr><td>\u0110i\u1ec7n tr\u1edf su\u1ea5t<\/td><td>0,30 \u03a9\u00b7mm\u00b2\/m<\/td><td>0,000545 \u03a9\u00b7in\u00b2\/ft<\/td><\/tr><tr><td>\u0110\u1ed9 d\u1eabn nhi\u1ec7t<\/td><td>34,6 W\/mK<\/td><td>240 BTU-in\/gi\u1edd-ft\u00b2-\u00b0F<\/td><\/tr><tr><td>Nhi\u1ec7t \u0111\u1ed9 chuy\u1ec3n \u0111\u1ed5i<\/td><td>730 \u00b0C<\/td><td>1350 \u00b0F<\/td><\/tr><\/tbody><\/table><\/figure><p class=\"wp-block-paragraph\">B\u1ea3ng sau \u0111\u00e2y cho th\u1ea5y h\u1ec7 s\u1ed1 gi\u00e3n n\u1edf v\u00ec nhi\u1ec7t (CTE) thay \u0111\u1ed5i theo nhi\u1ec7t \u0111\u1ed9.<\/p><figure class=\"wp-block-table\"><table><tbody><tr><td><strong>CTE (H\u1ec7 m\u00e9t)<\/strong><\/td><td><strong>CTE (\u0110\u1ebf qu\u1ed1c)<\/strong><\/td><td><strong>Nhi\u1ec7t \u0111\u1ed9 (M\u00e9t)<\/strong><\/td><td><strong>T\u00ednh kh\u00ed (Ho\u00e0ng gia)<\/strong><\/td><\/tr><tr><td>11,3 \u00b5m\/m-\u00b0C<\/td><td>6,28 \u00b5in\/in-\u00b0F<\/td><td>20,0 \u2013 100 \u00b0C<\/td><td>68,0 \u2013 212 \u00b0F<\/td><\/tr><tr><td>12,6 \u00b5m\/m-\u00b0C<\/td><td>7,00 \u00b5in\/in-\u00b0F<\/td><td>20,0 \u2013 200 \u00b0C<\/td><td>68,0 \u2013 392 \u00b0F<\/td><\/tr><tr><td>12,6 \u00b5m\/m-\u00b0C<\/td><td>7,00 \u00b5in\/in-\u00b0F<\/td><td>20,0 \u2013 425 \u00b0C<\/td><td>68,0 \u2013 797 \u00b0F<\/td><\/tr><tr><td>13,5 \u00b5m\/m-\u00b0C<\/td><td>7,50 \u00b5in\/in-\u00b0F<\/td><td>20,0 \u2013 540 \u00b0C<\/td><td>68,0 \u2013 1000 \u00b0F<\/td><\/tr><tr><td>13,7 \u00b5m\/m-\u00b0C<\/td><td>7,61 \u00b5in\/in-\u00b0F<\/td><td>20,0 \u2013 650 \u00b0C<\/td><td>68,0 \u2013 1200 \u00b0F<\/td><\/tr><\/tbody><\/table><\/figure><h2 class=\"wp-block-heading\">T\u00ednh ch\u1ea5t c\u01a1 h\u1ecdc c\u1ee7a th\u00e9p c\u00f4ng c\u1ee5 L6<\/h2><figure class=\"wp-block-table\"><table><tbody><tr><td><strong>T\u00e0i s\u1ea3n<\/strong><\/td><td><strong>Gi\u00e1 tr\u1ecb s\u1ed1 li\u1ec7u<\/strong><\/td><td><strong>Gi\u00e1 tr\u1ecb \u0110\u1ebf qu\u1ed1c<\/strong><\/td><td><strong>Ghi ch\u00fa<\/strong><\/td><\/tr><tr><td rowspan=\"2\">\u0110\u1ed9 c\u1ee9ng (HRC)<\/td><td>45 &#8211; 46<\/td><td>45 &#8211; 46<\/td><td>T\u00f4i luy\u1ec7n \u1edf nhi\u1ec7t \u0111\u1ed9 427\u00b0C (800\u00b0F)<\/td><\/tr><tr><td>61 &#8211; 62<\/td><td>61 &#8211; 62<\/td><td>Nh\u01b0 \u0111\u00e3 c\u1ee9ng l\u1ea1i<\/td><\/tr><tr><td>\u0110\u1ed9 b\u1ec1n k\u00e9o, T\u1ed1i \u0111a<\/td><td>1950MPa<\/td><td>283.000 psi<\/td><td>T\u00f4i luy\u1ec7n \u1edf nhi\u1ec7t \u0111\u1ed9 204\u00b0C (400\u00b0F)<\/td><\/tr><tr><td>\u0110\u1ed9 b\u1ec1n k\u00e9o, \u0110\u1ed9 b\u1ec1n k\u00e9o<\/td><td>1910MPa<\/td><td>277.000 psi<\/td><td>T\u00f4i luy\u1ec7n \u1edf nhi\u1ec7t \u0111\u1ed9 204\u00b0C (400\u00b0F)<\/td><\/tr><tr><td>\u0110\u1ed9 gi\u00e3n d\u00e0i khi \u0111\u1ee9t<\/td><td>2.0 %<\/td><td>2.0 %<\/td><td>T\u00f4i luy\u1ec7n \u1edf nhi\u1ec7t \u0111\u1ed9 204\u00b0C (400\u00b0F)<\/td><\/tr><tr><td>Gi\u1ea3m Di\u1ec7n T\u00edch<\/td><td>4.0 %<\/td><td>4.0 %<\/td><td>T\u00f4i luy\u1ec7n \u1edf nhi\u1ec7t \u0111\u1ed9 204\u00b0C (400\u00b0F)<\/td><\/tr><tr><td>M\u00f4 \u0111un \u0111\u00e0n h\u1ed3i<\/td><td>207 GPa<\/td><td>30.000 kil\u00f4gam<\/td><td>&#8211;<\/td><\/tr><tr><td>Izod Impact kh\u00f4ng c\u00f3 kh\u00eda<\/td><td>298 J<\/td><td>220 ft-lb<\/td><td>T\u00f4i luy\u1ec7n \u1edf nhi\u1ec7t \u0111\u1ed9 204\u00b0C (400\u00b0F)<\/td><\/tr><tr><td>T\u00e1c \u0111\u1ed9ng Charpy (V Notch)<\/td><td>5,00 J<\/td><td>3,69 ft-lb<\/td><td>T\u00f4i luy\u1ec7n \u1edf nhi\u1ec7t \u0111\u1ed9 204\u00b0C (400\u00b0F)<\/td><\/tr><tr><td>Charpy Impact, Kh\u00f4ng c\u00f3 kh\u00eda<\/td><td>284,7 J<\/td><td>210,0 ft-lb<\/td><td>T\u00f4i luy\u1ec7n \u1edf nhi\u1ec7t \u0111\u1ed9 177\u00b0C (350\u00b0F)<\/td><\/tr><tr><td>M\u00e0i m\u00f2n (\u0110\u00e3 t\u00f4i c\u1ee9ng)<\/td><td>74,8 mm\u00b3<\/td><td>74,8 mm\u00b3<\/td><td>T\u1ed5n th\u1ea5t t\u00ednh b\u1eb1ng mm\u00b3, ASTM G65<\/td><\/tr><tr><td>M\u00e0i m\u00f2n (\u0110\u01b0\u1ee3c t\u00f4i luy\u1ec7n \u1edf nhi\u1ec7t \u0111\u1ed9 650\u00b0F)<\/td><td>139,1 mm\u00b3<\/td><td>139,1 mm\u00b3<\/td><td>T\u1ed5n th\u1ea5t t\u00ednh b\u1eb1ng mm\u00b3, ASTM G65<\/td><\/tr><\/tbody><\/table><\/figure><h2 class=\"wp-block-heading\">X\u1eed l\u00fd nhi\u1ec7t th\u00e9p c\u00f4ng c\u1ee5 L6<\/h2><h3 class=\"wp-block-heading\">R\u00e8n th\u00e9p c\u00f4ng c\u1ee5 L6<\/h3><p class=\"wp-block-paragraph\">Khi r\u00e8n th\u00e9p c\u00f4ng c\u1ee5 L6, h\u00e3y nung n\u00f3ng th\u00e9p \u1edf nhi\u1ec7t \u0111\u1ed9 t\u1eeb 1079\u00b0C (1975\u00b0F) \u0111\u1ebfn 871\u00b0C (1600\u00b0F). Kh\u00f4ng r\u00e8n d\u01b0\u1edbi 843\u00b0C (1550\u00b0F). Sau khi \u0111\u1ecbnh h\u00ecnh, h\u00e3y \u0111\u1ec3 th\u00e9p ngu\u1ed9i d\u1ea7n \u0111\u1ec3 tr\u00e1nh bi\u1ebfn d\u1ea1ng v\u00e0 \u1ee9ng su\u1ea5t b\u00ean trong.<\/p><h3 class=\"wp-block-heading\">\u1ee6 th\u00e9p c\u00f4ng c\u1ee5 L6<\/h3><p class=\"wp-block-paragraph\">Sau khi gia c\u00f4ng n\u00f3ng v\u00e0 tr\u01b0\u1edbc khi t\u00f4i l\u1ea1i, th\u00e9p L6 c\u1ea7n \u0111\u01b0\u1ee3c \u1ee7. L\u00e0m n\u00f3ng th\u00e9p \u0111\u1ebfn 760\u00b0C (1400\u00b0F) v\u00e0 gi\u1eef \u1edf nhi\u1ec7t \u0111\u1ed9 n\u00e0y trong 60 ph\u00fat cho m\u1ed7i 25 mm (1 inch) \u0111\u1ed9 d\u00e0y.&nbsp;<\/p><p class=\"wp-block-paragraph\">Sau \u0111\u00f3, l\u00e0m ngu\u1ed9i th\u00e9p d\u1ea7n d\u1ea7n trong l\u00f2 v\u1edbi t\u1ed1c \u0111\u1ed9 kh\u00f4ng nhanh h\u01a1n 28\u00b0C (50\u00b0F) m\u1ed9t gi\u1edd cho \u0111\u1ebfn khi \u0111\u1ea1t 538\u00b0C (1000\u00b0F) v\u00e0 ti\u1ebfp t\u1ee5c l\u00e0m ngu\u1ed9i \u0111\u1ebfn nhi\u1ec7t \u0111\u1ed9 ph\u00f2ng trong l\u00f2 ho\u1eb7c b\u1eb1ng kh\u00f4ng kh\u00ed.<\/p><p class=\"wp-block-paragraph\">N\u1ebfu b\u1ea1n c\u1ea7n kh\u1ea3 n\u0103ng gia c\u00f4ng t\u1ed1t h\u01a1n, ch\u00fang t\u00f4i khuy\u00ean b\u1ea1n n\u00ean gi\u1eef th\u00e9p \u1edf nhi\u1ec7t \u0111\u1ed9 760\u00b0C (1400\u00b0F) trong 1 gi\u1edd cho m\u1ed7i inch \u0111\u1ed9 d\u00e0y, sau \u0111\u00f3 l\u00e0m ngu\u1ed9i ch\u1eadm trong l\u00f2 t\u1eeb 677\u00b0C (1250\u00b0F) \u0111\u1ebfn 760\u00b0C (1400\u00b0F) trong 8 gi\u1edd tr\u01b0\u1edbc khi l\u00e0m m\u00e1t b\u1eb1ng kh\u00f4ng kh\u00ed. Qu\u00e1 tr\u00ecnh n\u00e0y l\u00e0m gi\u1ea3m \u0111\u1ed9 c\u1ee9ng xu\u1ed1ng kho\u1ea3ng 192 HBW.<\/p><h3 class=\"wp-block-heading\">L\u00e0m c\u1ee9ng th\u00e9p c\u00f4ng c\u1ee5 L6<\/h3><h4 class=\"wp-block-heading\"><strong>L\u00e0m n\u00f3ng tr\u01b0\u1edbc<\/strong><\/h4><p class=\"wp-block-paragraph\">L\u00e0m n\u00f3ng tr\u01b0\u1edbc th\u00e9p c\u00f4ng c\u1ee5 L6 d\u1ea7n d\u1ea7n, kh\u00f4ng qu\u00e1 204\u00b0C (400\u00b0F) m\u1ed7i gi\u1edd, \u0111\u1ebfn 621-677\u00b0C (1150-1250\u00b0F). Ng\u00e2m trong 30 ph\u00fat cho m\u1ed7i 25 mm (1 inch) \u0111\u1ed9 d\u00e0y, c\u1ed9ng th\u00eam 15 ph\u00fat cho m\u1ed7i 25 mm (1 inch) b\u1ed5 sung.<\/p><h4 class=\"wp-block-heading\"><strong>Austenitizing (S\u01b0\u1edfi \u1ea5m \u1edf nhi\u1ec7t \u0111\u1ed9 cao)<\/strong><\/h4><p class=\"wp-block-paragraph\">Sau khi nung n\u00f3ng tr\u01b0\u1edbc, nung th\u00e9p \u0111\u1ebfn 788-816\u00b0C (1450-1500\u00b0F) trong l\u00f2 nung ho\u1eb7c b\u1ed3n mu\u1ed1i. Ng\u00e2m trong 30 ph\u00fat cho \u0111\u1ed9 d\u00e0y 25mm (1 inch) v\u00e0 th\u00eam 15 ph\u00fat cho m\u1ed7i 25mm (1 inch) ti\u1ebfp theo. \u0110i\u1ec1u n\u00e0y r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 t\u00f4i luy\u1ec7n \u0111\u00fang c\u00e1ch.<\/p><h4 class=\"wp-block-heading\"><strong>L\u00e0m ngu\u1ed9i<\/strong><\/h4><p class=\"wp-block-paragraph\">L\u00e0m ngu\u1ed9i th\u00e9p c\u00f4ng c\u1ee5 L6 trong d\u1ea7u cho \u0111\u1ebfn khi ngu\u1ed9i \u0111\u1ebfn 66-51\u00b0C (150-125\u00b0F). \u0110\u1ed1i v\u1edbi c\u00e1c ph\u1ea7n nh\u1ecf h\u01a1n 3 inch (76,2 mm), l\u00e0m ngu\u1ed9i trong kh\u00f4ng kh\u00ed ho\u1eb7c s\u1eed d\u1ee5ng kh\u00ed n\u00e9n l\u00e0 m\u1ed9t l\u1ef1a ch\u1ecdn cho \u0111\u1ed9 c\u1ee9ng v\u1eeba ph\u1ea3i.<\/p><h3 class=\"wp-block-heading\">X\u1eed l\u00fd nhi\u1ec7t \u0111\u1ed9 th\u1ea5p c\u1ee7a th\u00e9p c\u00f4ng c\u1ee5 L6<\/h3><p class=\"wp-block-paragraph\">Qu\u00e1 tr\u00ecnh x\u1eed l\u00fd \u1edf nhi\u1ec7t \u0111\u1ed9 th\u1ea5p c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n theo hai ph\u01b0\u01a1ng ph\u00e1p:<\/p><ul class=\"wp-block-list\"><li><strong>Sau khi austenit h\u00f3a v\u00e0 l\u00e0m ngu\u1ed9i<\/strong>:\u0110i\u1ec1u n\u00e0y gi\u00fap \u0111\u1ea1t \u0111\u01b0\u1ee3c \u0111\u1ed9 c\u1ee9ng \u0111\u1ed3ng \u0111\u1ec1u v\u00e0 gi\u1ea3m \u1ee9ng su\u1ea5t b\u00ean trong trong giai \u0111o\u1ea1n \u0111\u1ea7u c\u1ee7a qu\u00e1 tr\u00ecnh x\u1eed l\u00fd nhi\u1ec7t.<\/li>\n\n<li><strong>Sau khi t\u00f4i luy\u1ec7n<\/strong>:B\u01b0\u1edbc n\u00e0y c\u00f3 th\u1ec3 c\u1ea3i thi\u1ec7n \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh v\u1ec1 k\u00edch th\u01b0\u1edbc v\u00e0 gi\u1ea3m \u1ee9ng su\u1ea5t b\u00ean trong, gi\u00fap th\u00e9p \u1ed5n \u0111\u1ecbnh h\u01a1n \u0111\u1ec3 x\u1eed l\u00fd ti\u1ebfp theo.<\/li><\/ul><p class=\"wp-block-paragraph\">Th\u1eddi \u0111i\u1ec3m x\u1eed l\u00fd nhi\u1ec7t \u0111\u1ed9 th\u1ea5p ph\u1ee5 thu\u1ed9c v\u00e0o nhu c\u1ea7u c\u1ee5 th\u1ec3 c\u1ee7a b\u1ea1n v\u1ec1 \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh k\u00edch th\u01b0\u1edbc v\u00e0 gi\u1ea3m \u1ee9ng su\u1ea5t b\u00ean trong. H\u00e3y cho ch\u00fang t\u00f4i bi\u1ebft n\u1ebfu b\u1ea1n c\u1ea7n h\u1ed7 tr\u1ee3 \u0111\u1ec3 quy\u1ebft \u0111\u1ecbnh gi\u1ea3i ph\u00e1p ph\u00f9 h\u1ee3p cho d\u1ef1 \u00e1n c\u1ee7a m\u00ecnh.<\/p><h3 class=\"wp-block-heading\">T\u00f4i luy\u1ec7n th\u00e9p c\u00f4ng c\u1ee5 L6<\/h3><p class=\"wp-block-paragraph\">Sau khi t\u00f4i, t\u00f4i th\u00e9p L6 ngay l\u1eadp t\u1ee9c. T\u00f4i \u1edf nhi\u1ec7t \u0111\u1ed9 204\u00b0C (400\u00b0F) trong 1 gi\u1edd cho m\u1ed7i inch \u0111\u1ed9 d\u00e0y, \u0111\u1ea3m b\u1ea3o th\u1eddi gian t\u1ed1i thi\u1ec3u l\u00e0 4 gi\u1edd. \u0110\u1ec3 ngu\u1ed9i t\u1ef1 nhi\u00ean \u0111\u1ebfn nhi\u1ec7t \u0111\u1ed9 ph\u00f2ng.&nbsp;<\/p><p class=\"wp-block-paragraph\">\u0110\u1ed1i v\u1edbi c\u00e1c ph\u1ea7n d\u00e0y h\u01a1n (l\u1edbn h\u01a1n 6 inch \/ 152,4 mm), ch\u00fang t\u00f4i khuy\u00ean b\u1ea1n n\u00ean ng\u00e2m trong 8-10 gi\u1edd \u0111\u1ec3 gi\u1ea3m \u1ee9ng su\u1ea5t b\u00ean trong v\u00e0 \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh t\u1ed1t h\u01a1n, \u0111\u1eb7c bi\u1ec7t n\u1ebfu d\u1ee5ng c\u1ee5 c\u1ee7a b\u1ea1n s\u1ebd tr\u1ea3i qua qu\u00e1 tr\u00ecnh EDM (Gia c\u00f4ng b\u1eb1ng tia l\u1eeda \u0111i\u1ec7n).<\/p><p class=\"wp-block-paragraph\">N\u1ebfu b\u1ea1n c\u1ea7n \u0111\u1ed9 d\u1ebbo dai cao h\u01a1n v\u1edbi c\u00e1i gi\u00e1 ph\u1ea3i tr\u1ea3 l\u00e0 \u0111\u1ed9 c\u1ee9ng, th\u00ec vi\u1ec7c t\u00f4i luy\u1ec7n \u1edf nhi\u1ec7t \u0111\u1ed9 cao h\u01a1n t\u1eeb 232\u00b0C \u0111\u1ebfn 426\u00b0C (450 \u0111\u1ebfn 800\u00b0F) s\u1ebd hi\u1ec7u qu\u1ea3. \u0110i\u1ec1u n\u00e0y gi\u00fap b\u1ea1n c\u00e2n b\u1eb1ng t\u1ed1t h\u01a1n gi\u1eefa \u0111\u1ed9 d\u1ebbo dai v\u00e0 \u0111\u1ed9 c\u1ee9ng cho m\u1ed9t s\u1ed1 \u1ee9ng d\u1ee5ng nh\u1ea5t \u0111\u1ecbnh.<\/p><h2 class=\"wp-block-heading\">\u1ee8ng d\u1ee5ng th\u00e9p c\u00f4ng c\u1ee5 L6<\/h2><p class=\"wp-block-paragraph\">Th\u00e9p c\u00f4ng c\u1ee5 L6 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong nh\u1eefng t\u00ecnh hu\u1ed1ng \u0111\u00f2i h\u1ecfi c\u1ea3 \u0111\u1ed9 b\u1ec1n v\u00e0 s\u1ee9c m\u1ea1nh. Nh\u1eefng c\u00f4ng d\u1ee5ng ph\u1ed5 bi\u1ebfn bao g\u1ed3m:<\/p><ul class=\"wp-block-list\"><li>\u0110\u1ea5m v\u00e0 ch\u1ebft<\/li>\n\n<li>Khu\u00f4n \u00e9p nh\u1ef1a<\/li>\n\n<li>Tr\u1ee5c ch\u00ednh<\/li>\n\n<li>Cams<\/li>\n\n<li>M\u00e2m c\u1eb7p v\u00e0 k\u1eb9p<\/li>\n\n<li>D\u1ee5ng c\u1ee5 c\u1eaft<\/li>\n\n<li>Jig v\u00e0 \u0111\u1ed3 g\u00e1<\/li>\n\n<li>Ch\u1ed1t l\u00f5i<\/li><\/ul><h2 class=\"wp-block-heading\">Th\u00e9p c\u00f4ng c\u1ee5 L6 so v\u1edbi th\u00e9p T10<\/h2><p class=\"wp-block-paragraph\">Th\u00e9p L6 l\u00e0 h\u1ee3p kim t\u00f4i d\u1ea7u \u0111\u01b0\u1ee3c c\u00f4ng nh\u1eadn v\u1ec1 \u0111\u1ed9 b\u1ec1n v\u00e0 kh\u1ea3 n\u0103ng ch\u1ed1ng va \u0111\u1eadp, khi\u1ebfn n\u00f3 tr\u1edf n\u00ean l\u00fd t\u01b0\u1edfng cho c\u00e1c c\u00f4ng c\u1ee5 nh\u01b0 \u0111\u1ee5c v\u00e0 khu\u00f4n. N\u00f3 cung c\u1ea5p s\u1ef1 k\u1ebft h\u1ee3p c\u00e2n b\u1eb1ng gi\u1eefa \u0111\u1ed9 c\u1ee9ng v\u00e0 \u0111\u1ed9 b\u1ec1n. Th\u00e9p T10, m\u1ed9t kim lo\u1ea1i c\u00f3 h\u00e0m l\u01b0\u1ee3ng carbon cao, c\u1ee9ng h\u01a1n v\u00e0 ch\u1ed1ng m\u00e0i m\u00f2n t\u1ed1t h\u01a1n, khi\u1ebfn n\u00f3 tr\u1edf n\u00ean ho\u00e0n h\u1ea3o cho c\u00e1c c\u00f4ng c\u1ee5 nh\u01b0 \u0111\u1ee5c v\u00e0 l\u01b0\u1ee1i dao.<\/p><p class=\"wp-block-paragraph\">T\u00f3m l\u1ea1i, h\u00e3y ch\u1ecdn L6 cho \u0111\u1ed9 d\u1ebbo dai v\u00e0 T10 cho \u0111\u1ed9 c\u1ee9ng v\u00e0 kh\u1ea3 n\u0103ng ch\u1ed1ng m\u00e0i m\u00f2n.<\/p><h2 class=\"wp-block-heading\">Th\u00e9p c\u00f4ng c\u1ee5 L6 t\u00f9y ch\u1ec9nh &amp; D\u1ecbch v\u1ee5 chuy\u00ean gia d\u00e0nh ri\u00eang cho b\u1ea1n<\/h2><p class=\"wp-block-paragraph\">Ch\u00fang t\u00f4i cung c\u1ea5p th\u00e9p c\u00f4ng c\u1ee5 L6 \u1edf d\u1ea1ng thanh, t\u1ea5m, r\u00e8n v\u00e0 tr\u00f2n, v\u1edbi k\u00edch th\u01b0\u1edbc t\u00f9y ch\u1ec9nh \u0111\u1ec3 ph\u00f9 h\u1ee3p v\u1edbi nhu c\u1ea7u c\u1ee7a b\u1ea1n. Ch\u00fang t\u00f4i c\u0169ng cung c\u1ea5p <a href=\"https:\/\/steelprogroup.com\/vi\/tool-steel\/cr12mov\/\">T\u1ea5m v\u00e0 thanh th\u00e9p D2.<\/a> C\u00e1c d\u1ecbch v\u1ee5 c\u1ee7a ch\u00fang t\u00f4i bao g\u1ed3m gia c\u00f4ng nhi\u1ec7t, r\u00e8n v\u00e0 gia c\u00f4ng \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o s\u1ea3n ph\u1ea9m c\u1ee7a b\u1ea1n \u0111\u1ea1t ti\u00eau chu\u1ea9n ch\u1ea5t l\u01b0\u1ee3ng h\u00e0ng \u0111\u1ea7u. H\u00e3y li\u00ean h\u1ec7 v\u1edbi ch\u00fang t\u00f4i ngay h\u00f4m nay \u0111\u1ec3 c\u00f3 \u0111\u01b0\u1ee3c c\u00e1c s\u1ea3n ph\u1ea9m v\u00e0 h\u1ed7 tr\u1ee3 b\u1ea1n c\u1ea7n!<\/p>","protected":false},"excerpt":{"rendered":"<p>At SteelPro Group, we supply high-quality L6 tool steel products that meet international standards like ASTM A681, SAE J437, and [&hellip;]<\/p>","protected":false},"author":12,"featured_media":20126,"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":[4294,4293],"tags":[],"class_list":["post-20136","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-grades-tool-steel","category-tool-steel"],"acf":[],"_links":{"self":[{"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/posts\/20136","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=20136"}],"version-history":[{"count":0,"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/posts\/20136\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/media\/20126"}],"wp:attachment":[{"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/media?parent=20136"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/categories?post=20136"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/tags?post=20136"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}