{"id":21368,"date":"2025-03-09T02:14:00","date_gmt":"2025-03-08T18:14:00","guid":{"rendered":"https:\/\/steelprogroup.com\/?p=21368"},"modified":"2025-03-10T17:47:38","modified_gmt":"2025-03-10T09:47:38","slug":"4320-steel","status":"publish","type":"post","link":"https:\/\/steelprogroup.com\/vi\/alloy-steel\/4320-steel\/","title":{"rendered":"Th\u00e9p h\u1ee3p kim AISI 4320 | Nh\u00e0 s\u1ea3n xu\u1ea5t thanh UNS G43200"},"content":{"rendered":"<p>B\u1ea1n \u0111ang t\u00ecm ki\u1ebfm m\u1ed9t lo\u1ea1i th\u00e9p h\u1ee3p kim hi\u1ec7u su\u1ea5t cao k\u1ebft h\u1ee3p \u0111\u1ed9 b\u1ec1n, kh\u1ea3 n\u0103ng h\u00e0n v\u00e0 kh\u1ea3 n\u0103ng ch\u1ed1ng m\u00e0i m\u00f2n? Th\u00e9p h\u1ee3p kim AISI 4320 l\u00e0 c\u00e2u tr\u1ea3 l\u1eddi h\u00e0ng \u0111\u1ea7u.&nbsp;<\/p><p>T\u1ea1i SteelPro Group, ch\u00fang t\u00f4i chuy\u00ean cung c\u1ea5p c\u00e1c s\u1ea3n ph\u1ea9m th\u00e9p 4320 \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf ch\u00ednh x\u00e1c, \u0111\u00e1p \u1ee9ng c\u00e1c ti\u00eau chu\u1ea9n nghi\u00eam ng\u1eb7t c\u1ee7a ng\u00e0nh.&nbsp;<\/p><p>Trong b\u00e0i vi\u1ebft n\u00e0y, b\u1ea1n s\u1ebd kh\u00e1m ph\u00e1 khoa h\u1ecdc \u0111\u1eb1ng sau lo\u1ea1i v\u1eadt li\u1ec7u \u0111a n\u0103ng n\u00e0y, c\u00e1c \u1ee9ng d\u1ee5ng quan tr\u1ecdng c\u1ee7a n\u00f3 v\u00e0 c\u00e1ch n\u0103ng l\u1ef1c s\u1ea3n xu\u1ea5t ti\u00ean ti\u1ebfn c\u1ee7a ch\u00fang t\u00f4i \u0111\u1ea3m b\u1ea3o ch\u1ea5t l\u01b0\u1ee3ng v\u01b0\u1ee3t tr\u1ed9i cho c\u00e1c d\u1ef1 \u00e1n c\u1ee7a b\u1ea1n, t\u1eeb m\u00e1y m\u00f3c h\u1ea1ng n\u1eb7ng \u0111\u1ebfn c\u00e1c linh ki\u1ec7n h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5.&nbsp;<\/p><h2 class=\"wp-block-heading\">Th\u00e9p AISI 4320 l\u00e0 g\u00ec?<\/h2><p>AISI 4320 l\u00e0 th\u00e9p h\u1ee3p kim th\u1ea5p, n\u1ed5i ti\u1ebfng v\u1edbi \u0111\u1ed9 b\u1ec1n, \u0111\u1ed9 d\u1ebbo dai v\u00e0 kh\u1ea3 n\u0103ng ch\u1ed1ng m\u00e0i m\u00f2n nh\u1edd h\u1ed7n h\u1ee3p niken, crom v\u00e0 molypden. H\u00e0m l\u01b0\u1ee3ng carbon th\u1ea5p (0,17-0,22%) \u0111\u1ea3m b\u1ea3o kh\u1ea3 n\u0103ng h\u00e0n t\u1ed1t. \u0110\u1eb7c t\u00ednh l\u00e0m c\u1ee9ng b\u1ec1 m\u1eb7t c\u1ee7a th\u00e9p t\u1ea1o n\u00ean l\u1edbp ngo\u00e0i b\u1ec1n b\u1ec9, ch\u1ed1ng m\u00e0i m\u00f2n b\u00ean tr\u00ean l\u00f5i \u0111\u00e0n h\u1ed3i. \u0110i\u1ec1u n\u00e0y l\u00e0m cho n\u00f3 tr\u1edf n\u00ean ho\u00e0n h\u1ea3o cho c\u00e1c b\u1ed9 ph\u1eadn ch\u1ecbu ma s\u00e1t ho\u1eb7c l\u1ef1c m\u1ea1nh, ch\u1eb3ng h\u1ea1n nh\u01b0 b\u00e1nh r\u0103ng v\u00e0 tr\u1ee5c. Th\u00e9p 4320 c\u0169ng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong \u00f4 t\u00f4, h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5 v\u00e0 m\u00e1y m\u00f3c h\u1ea1ng n\u1eb7ng.<\/p><h2 class=\"wp-block-heading\">Th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc c\u1ee7a th\u00e9p 4320<\/h2><figure class=\"wp-block-table\"><table><tbody><tr><td><strong>Y\u1ebfu t\u1ed1<\/strong><\/td><td><strong>N\u1ed9i dung<\/strong><\/td><\/tr><tr><td>Cacbon (C)<\/td><td>0.17~0.22%<\/td><\/tr><tr><td>Silic (Si)<\/td><td>0.15~0.35%<\/td><\/tr><tr><td>Mangan (Mn)<\/td><td>0.45~0.65%<\/td><\/tr><tr><td>Ph\u1ed1t pho (P)<\/td><td>\u2264 0,035%<\/td><\/tr><tr><td>L\u01b0u hu\u1ef3nh (S)<\/td><td>\u2264 0,04%<\/td><\/tr><tr><td>Crom (Cr)<\/td><td>\u2265 0,4~0,6%<\/td><\/tr><tr><td>Niken (Ni)<\/td><td>\u2265 1,65~2%<\/td><\/tr><tr><td>Molip\u0111en (Mo)<\/td><td>\u2265 0,2~0,3%<\/td><\/tr><\/tbody><\/table><\/figure><h2 class=\"wp-block-heading\">T\u00ednh ch\u1ea5t c\u01a1 h\u1ecdc c\u1ee7a th\u00e9p 4320<\/h2><figure class=\"wp-block-table\"><table><tbody><tr><td><strong>T\u00ednh ch\u1ea5t c\u01a1 h\u1ecdc<\/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>235<\/td><td>235<\/td><\/tr><tr><td>\u0110\u1ed9 c\u1ee9ng, Knoop<\/td><td>259<\/td><td>259<\/td><\/tr><tr><td>\u0110\u1ed9 c\u1ee9ng, Rockwell B<\/td><td>97<\/td><td>97<\/td><\/tr><tr><td>\u0110\u1ed9 c\u1ee9ng, Rockwell C<\/td><td>21<\/td><td>21<\/td><\/tr><tr><td>\u0110\u1ed9 c\u1ee9ng, Vickers<\/td><td>247<\/td><td>247<\/td><\/tr><tr><td>\u0110\u1ed9 b\u1ec1n k\u00e9o<\/td><td>793 MPa<\/td><td>115.000 psi<\/td><\/tr><tr><td>\u0110\u1ed9 b\u1ec1n k\u00e9o t\u1ed1i \u0111a<\/td><td>460MPa<\/td><td>66.700 psi<\/td><\/tr><tr><td>\u0110\u1ed9 gi\u00e3n d\u00e0i khi \u0111\u1ee9t<\/td><td>20.80% trong 50 mm<\/td><td>20.80% trong 50 mm<\/td><\/tr><tr><td>M\u00f4 \u0111un \u0111\u00e0n h\u1ed3i<\/td><td>205 GPa<\/td><td>29.700 kil\u00f4gam<\/td><\/tr><tr><td>M\u00f4 \u0111un kh\u1ed1i<\/td><td>160 GPa<\/td><td>23.200 kil\u00f4gam<\/td><\/tr><tr><td>T\u1ef7 s\u1ed1 Poisson<\/td><td>0.29<\/td><td>0.29<\/td><\/tr><tr><td>Gi\u1ea3m Di\u1ec7n T\u00edch<\/td><td>51%<\/td><td>51%<\/td><\/tr><tr><td>Kh\u1ea3 n\u0103ng gia c\u00f4ng<\/td><td>60%<\/td><td>60%<\/td><\/tr><tr><td>M\u00f4 \u0111un c\u1eaft<\/td><td>80,0 GPa<\/td><td>11.600 kil\u00f4gam<\/td><\/tr><tr><td>T\u00e1c \u0111\u1ed9ng Izod<\/td><td>73,0 J<\/td><td>53,8 ft-lb<\/td><\/tr><\/tbody><\/table><\/figure><h2 class=\"wp-block-heading\">T\u00ednh ch\u1ea5t v\u1eadt l\u00fd c\u1ee7a th\u00e9p 4320<\/h2><figure class=\"wp-block-table\"><table><tbody><tr><td><strong>T\u00e0i s\u1ea3n v\u1eadt l\u00fd<\/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>1425~1530 \u00b0C<\/td><td>2597~2790 \u00b0F<\/td><\/tr><tr><td>S\u1ef1 gi\u00e3n n\u1edf v\u00ec nhi\u1ec7t<\/td><td>11,3 \u00b5m\/m-\u00b0C<\/td><td>6,28 \u00b5in\/in-\u00b0F<\/td><\/tr><\/tbody><\/table><\/figure><h2 class=\"wp-block-heading\">T\u00ednh ch\u1ea5t nhi\u1ec7t c\u1ee7a th\u00e9p 4320<\/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>CTE, Tuy\u1ebfn t\u00ednh<\/td><td>11,3 \u00b5m\/m-\u00b0C<\/td><td>6,28 \u00b5in\/in-\u00b0F<\/td><\/tr><tr><td>Nhi\u1ec7t dung ri\u00eang<\/td><td>0,475 J\/g-\u00b0C<\/td><td>0,113 BTU\/lb-\u00b0F<\/td><\/tr><tr><td>\u0110\u1ed9 d\u1eabn nhi\u1ec7t<\/td><td>44,5 W\/mK<\/td><td>30,7 BTU\u00b7in\/h\u00b7ft\u00b2\u00b7\u00b0F<\/td><\/tr><\/tbody><\/table><\/figure><h2 class=\"wp-block-heading\">L\u1ee3i \u00edch c\u1ee7a th\u00e9p h\u1ee3p kim 4320<\/h2><p>Th\u00e9p h\u1ee3p kim AISI 4320 v\u01b0\u1ee3t tr\u1ed9i trong c\u00e1c m\u00f4i tr\u01b0\u1eddng \u0111\u00f2i h\u1ecfi c\u1ea3 \u0111\u1ed9 c\u1ee9ng b\u1ec1 m\u1eb7t v\u00e0 \u0111\u1ed9 b\u1ec1n l\u00f5i. C\u00e1c \u0111\u1eb7c \u0111i\u1ec3m n\u1ed5i b\u1eadt c\u1ee7a n\u00f3 bao g\u1ed3m:<\/p><ul class=\"wp-block-list\"><li><strong>Kh\u1ea3 n\u0103ng l\u00e0m c\u1ee9ng v\u1ecf m\u00e1y<\/strong>: \u0110\u1ea1t \u0111\u01b0\u1ee3c b\u1ec1 m\u1eb7t ch\u1ed1ng m\u00e0i m\u00f2n (th\u00f4ng qua th\u1ea5m cacbon ho\u1eb7c th\u1ea5m nit\u01a1) trong khi v\u1eabn gi\u1eef \u0111\u01b0\u1ee3c l\u00f5i d\u1ebbo, h\u1ea5p th\u1ee5 s\u1ed1c.<\/li>\n\n<li><strong>\u0110\u1ed9 b\u1ec1n m\u1ecfi cao<\/strong>: Ch\u1ed1ng l\u1ea1i s\u1ef1 ph\u00e1 h\u1ee7y do \u1ee9ng su\u1ea5t tu\u1ea7n ho\u00e0n, r\u1ea5t quan tr\u1ecdng \u0111\u1ed1i v\u1edbi b\u00e1nh r\u0103ng v\u00e0 c\u00e1c b\u1ed9 ph\u1eadn quay.<\/li>\n\n<li><strong>Kh\u1ea3 n\u0103ng h\u00e0n v\u01b0\u1ee3t tr\u1ed9i<\/strong>: H\u00e0m l\u01b0\u1ee3ng carbon th\u1ea5p gi\u00fap gi\u1ea3m thi\u1ec3u c\u00e1c x\u1eed l\u00fd tr\u01b0\u1edbc\/sau khi h\u00e0n, gi\u1ea3m chi ph\u00ed ch\u1ebf t\u1ea1o.<\/li>\n\n<li><strong>\u0110\u1ed9 \u1ed5n \u0111\u1ecbnh nhi\u1ec7t<\/strong>: Duy tr\u00ec c\u00e1c \u0111\u1eb7c t\u00ednh c\u01a1 h\u1ecdc l\u00ean \u0111\u1ebfn 425\u00b0C (797\u00b0F), ph\u00f9 h\u1ee3p cho c\u00e1c \u1ee9ng d\u1ee5ng nhi\u1ec7t \u0111\u1ed9 cao.<\/li>\n\n<li><strong>Kh\u1ea3 n\u0103ng th\u00edch \u1ee9ng v\u1edbi x\u1eed l\u00fd nhi\u1ec7t<\/strong>: Ph\u1ea3n \u1ee9ng theo d\u1ef1 \u0111o\u00e1n v\u1edbi qu\u00e1 tr\u00ecnh l\u00e0m ngu\u1ed9i, ram v\u00e0 \u1ee7 \u0111\u1ec3 \u0111\u1ea1t \u0111\u1ed9 c\u1ee9ng ph\u00f9 h\u1ee3p (th\u01b0\u1eddng l\u00e0 55-62 HRC sau khi t\u00f4i b\u1ec1 m\u1eb7t).<\/li><\/ul><h3 class=\"wp-block-heading\">Nh\u1eefng h\u1ea1n ch\u1ebf c\u1ea7n xem x\u00e9t<\/h3><ul class=\"wp-block-list\"><li><strong>Kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n v\u1eeba ph\u1ea3i<\/strong>: C\u1ea7n c\u00f3 l\u1edbp ph\u1ee7 b\u1ea3o v\u1ec7 ho\u1eb7c m\u1ea1 \u0111\u1ec3 s\u1eed d\u1ee5ng trong m\u00f4i tr\u01b0\u1eddng \u1ea9m \u01b0\u1edbt ho\u1eb7c \u0103n m\u00f2n.<\/li>\n\n<li><strong>Chi ph\u00ed c\u1ee7a c\u00e1c nguy\u00ean t\u1ed1 h\u1ee3p kim<\/strong>:H\u00e0m l\u01b0\u1ee3ng niken v\u00e0 crom cao h\u01a1n l\u00e0m t\u0103ng chi ph\u00ed v\u1eadt li\u1ec7u so v\u1edbi th\u00e9p cacbon.<\/li>\n\n<li><strong>Hi\u1ec7u su\u1ea5t nhi\u1ec7t \u0111\u1ed9 cao h\u1ea1n ch\u1ebf<\/strong>: Ph\u00e2n h\u1ee7y \u0111\u00e1ng k\u1ec3 \u1edf nhi\u1ec7t \u0111\u1ed9 tr\u00ean 500\u00b0C (932\u00b0F), h\u1ea1n ch\u1ebf s\u1eed d\u1ee5ng trong \u0111i\u1ec1u ki\u1ec7n nhi\u1ec7t \u0111\u1ed9 kh\u1eafc nghi\u1ec7t.<\/li><\/ul><p><strong><em>\u0110\u1ecdc th\u00eam li\u00ean quan: <a href=\"https:\/\/steelprogroup.com\/vi\/alloy-steel\/fireproof\/\">Th\u00e9p h\u1ee3p kim c\u00f3 ch\u1ed1ng ch\u00e1y kh\u00f4ng?<\/a><\/em><\/strong><\/p><p>T\u1ea1i SteelPro Group, ch\u00fang t\u00f4i gi\u1ea3i quy\u1ebft nh\u1eefng th\u00e1ch th\u1ee9c n\u00e0y th\u00f4ng qua c\u00e1c giao th\u1ee9c x\u1eed l\u00fd nhi\u1ec7t v\u00e0 t\u00f9y ch\u1ecdn ho\u00e0n thi\u1ec7n b\u1ec1 m\u1eb7t \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf ri\u00eang, \u0111\u1ea3m b\u1ea3o th\u00e9p 4320 \u0111\u00e1p \u1ee9ng \u0111\u01b0\u1ee3c nhu c\u1ea7u v\u1eadn h\u00e0nh c\u1ee5 th\u1ec3 c\u1ee7a b\u1ea1n.<\/p><h2 class=\"wp-block-heading\">\u1ee8ng d\u1ee5ng th\u00e9p 4320<\/h2><ul class=\"wp-block-list\"><li><strong>H\u1ec7 th\u1ed1ng \u00f4 t\u00f4<\/strong>: B\u00e1nh r\u0103ng truy\u1ec1n \u0111\u1ed9ng, tr\u1ee5c cam v\u00e0 c\u00e1c b\u1ed9 ph\u1eadn vi sai do kh\u1ea3 n\u0103ng ch\u1ed1ng m\u1ecfi v\u00e0 ch\u1ecbu \u0111\u01b0\u1ee3c t\u1ea3i tr\u1ecdng tu\u1ea7n ho\u00e0n.<\/li>\n\n<li><strong>Linh ki\u1ec7n h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5<\/strong>: C\u00e1c b\u1ed9 ph\u1eadn b\u00e1nh \u0111\u00e1p, h\u1ec7 th\u1ed1ng truy\u1ec1n \u0111\u1ed9ng v\u00e0 gi\u00e1 \u0111\u1ee1 \u0111\u1ed9ng c\u01a1 \u0111\u00f2i h\u1ecfi \u0111\u1ed9 b\u1ec1n nh\u1eb9.<\/li>\n\n<li><strong>M\u00e1y m\u00f3c h\u1ea1ng n\u1eb7ng<\/strong>: B\u00e1nh r\u0103ng thi\u1ebft b\u1ecb khai th\u00e1c, thanh piston th\u1ee7y l\u1ef1c v\u00e0 tr\u1ee5c c\u1ea7n c\u1ea9u ti\u1ebfp x\u00fac v\u1edbi \u0111i\u1ec1u ki\u1ec7n m\u00e0i m\u00f2n.<\/li>\n\n<li><strong>Khoan d\u1ea7u kh\u00ed<\/strong>: V\u00f2ng khoan, th\u00e2n van v\u00e0 c\u00e1c ch\u1ed1t ch\u1ecbu l\u1ef1c cao c\u1ea7n c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n (c\u00f3 l\u1edbp ph\u1ee7).<\/li>\n\n<li><strong>Truy\u1ec1n t\u1ea3i \u0111i\u1ec7n<\/strong>: H\u1ed9p s\u1ed1 c\u00f4ng nghi\u1ec7p, b\u00e1nh r\u0103ng v\u00e0 tr\u1ee5c truy\u1ec1n \u0111\u1ed9ng trong tua bin gi\u00f3 ho\u1eb7c thi\u1ebft b\u1ecb s\u1ea3n xu\u1ea5t.<\/li><\/ul><h2 class=\"wp-block-heading\">Th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt v\u00e0 k\u00edch th\u01b0\u1edbc s\u1ea3n ph\u1ea9m th\u00e9p 4320<\/h2><p>T\u1ea1i SteelPro Group, ch\u00fang t\u00f4i cung c\u1ea5p th\u00e9p h\u1ee3p kim AISI 4320 v\u1edbi c\u00e1c th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt v\u00e0 k\u00edch th\u01b0\u1edbc sau:<\/p><figure class=\"wp-block-table\"><table><tbody><tr><td><strong>M\u1eabu s\u1ea3n ph\u1ea9m<\/strong><\/td><td><strong>Ti\u00eau chu\u1ea9n<\/strong><\/td><td><strong>K\u00edch th\u01b0\u1edbc<\/strong><\/td><\/tr><tr><td rowspan=\"2\">Thanh tr\u00f2n &amp; Thanh r\u00e8n<\/td><td rowspan=\"2\">ASTM A29, ASTM A322, SAE J404<\/td><td>\u0110\u01b0\u1eddng k\u00ednh: 10mm\u2013500mm (0,4\u2033\u201320\u2033)<\/td><\/tr><tr><td>Chi\u1ec1u d\u00e0i: L\u00ean \u0111\u1ebfn 6m (20 ft)<\/td><\/tr><tr><td rowspan=\"2\">Thanh &amp; T\u1ea5m Ph\u1eb3ng<\/td><td rowspan=\"2\">ASTM A29, ASTM A535<\/td><td>\u0110\u1ed9 d\u00e0y: 5mm\u2013300mm (0,2\u2033\u201312\u2033)<\/td><\/tr><tr><td>Chi\u1ec1u r\u1ed9ng: L\u00ean \u0111\u1ebfn 2,5m (8,2 ft)<\/td><\/tr><tr><td rowspan=\"2\">\u1ed0ng li\u1ec1n m\u1ea1ch<\/td><td rowspan=\"2\">ASTM A519, SAE J412<\/td><td>\u0110\u01b0\u1eddng k\u00ednh ngo\u00e0i: 15mm\u2013300mm (0,6\u2033\u201312\u2033)<\/td><\/tr><tr><td>\u0110\u1ed9 d\u00e0y th\u00e0nh: 2mm\u201350mm (0,08\u2033\u20132\u2033)<\/td><\/tr><tr><td>Billets &amp; Blooms<\/td><td>ASTM A331, ASTM A752<\/td><td>M\u1eb7t c\u1eaft ngang: 100mm x 100mm\u2013400mm x 400mm (4\u2033 x 4\u2033\u201316\u2033 x 16\u2033)<\/td><\/tr><\/tbody><\/table><\/figure><p>Th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt ch\u00ednh:<\/p><ul class=\"wp-block-list\"><li><strong>X\u1eed l\u00fd nhi\u1ec7t<\/strong>: \u0110\u01b0\u1ee3c cung c\u1ea5p trong \u0111i\u1ec1u ki\u1ec7n \u1ee7, chu\u1ea9n h\u00f3a ho\u1eb7c t\u00f4i c\u1ee9ng tr\u01b0\u1edbc (SAE J1397).<\/li>\n\n<li><strong>Ch\u1ee9ng nh\u1eadn<\/strong>: Tu\u00e2n th\u1ee7 c\u00e1c ti\u00eau chu\u1ea9n ASTM, SAE v\u00e0 ISO v\u1ec1 ki\u1ec3m so\u00e1t ch\u1ea5t l\u01b0\u1ee3ng.<\/li><\/ul><p>SteelPro Group cung c\u1ea5p d\u1ecbch v\u1ee5 gia c\u00f4ng, c\u1eaft v\u00e0 ho\u00e0n thi\u1ec7n b\u1ec1 m\u1eb7t theo y\u00eau c\u1ea7u (v\u00ed d\u1ee5: m\u00e0i, \u0111\u00e1nh b\u00f3ng) \u0111\u1ec3 cung c\u1ea5p c\u00e1c th\u00e0nh ph\u1ea7n th\u00e9p 4320 s\u1eb5n s\u00e0ng l\u1eafp \u0111\u1eb7t theo \u0111\u00fang y\u00eau c\u1ea7u c\u1ee7a b\u1ea1n.<\/p><h2 class=\"wp-block-heading\">Quy tr\u00ecnh r\u00e8n th\u00e9p 4320<\/h2><p>Th\u00e9p h\u1ee3p kim AISI 4320 \u0111\u01b0\u1ee3c r\u00e8n \u1edf nhi\u1ec7t \u0111\u1ed9 t\u1eeb <strong>1038\u00b0C v\u00e0 1205\u00b0C (1900\u00b0F\u20132200\u00b0F) <\/strong>\u0111\u1ec3 t\u1ed1i \u01b0u h\u00f3a c\u1ea5u tr\u00fac h\u1ea1t v\u00e0 t\u00ednh ch\u1ea5t c\u01a1 h\u1ecdc.&nbsp;<\/p><p>D\u00e2y chuy\u1ec1n r\u00e8n ti\u00ean ti\u1ebfn c\u1ee7a ch\u00fang t\u00f4i h\u1ed7 tr\u1ee3 h\u00ecnh h\u1ecdc t\u00f9y ch\u1ec9nh l\u00ean \u0111\u1ebfn <strong>3 t\u1ea5n<\/strong>, v\u1edbi dung sai k\u00edch th\u01b0\u1edbc ch\u1eb7t ch\u1ebd (\u00b11,5mm). K\u1ebft h\u1ee3p v\u1edbi th\u1eed nghi\u1ec7m si\u00eau \u00e2m trong qu\u00e1 tr\u00ecnh s\u1ea3n xu\u1ea5t, ch\u00fang t\u00f4i \u0111\u1ea3m b\u1ea3o th\u00e9p r\u00e8n 4320 kh\u00f4ng khuy\u1ebft t\u1eadt, s\u1eb5n s\u00e0ng cho gia c\u00f4ng ho\u1eb7c x\u1eed l\u00fd nhi\u1ec7t.<\/p><h2 class=\"wp-block-heading\">X\u1eed l\u00fd nhi\u1ec7t th\u00e9p 4320<\/h2><h3 class=\"wp-block-heading\">1. Chu\u1ea9n h\u00f3a<\/h3><p>\u1ede nhi\u1ec7t \u0111\u1ed9 872\u00b0C (1600\u00b0F), th\u00e9p 4320 tr\u1ea3i qua qu\u00e1 tr\u00ecnh th\u01b0\u1eddng h\u00f3a\u2014m\u1ed9t qu\u00e1 tr\u00ecnh tinh ch\u1ec9nh c\u1ea5u tr\u00fac h\u1ea1t v\u00e0 lo\u1ea1i b\u1ecf \u1ee9ng su\u1ea5t b\u00ean trong t\u1eeb qu\u00e1 tr\u00ecnh gia c\u00f4ng ho\u1eb7c r\u00e8n tr\u01b0\u1edbc \u0111\u00f3. Qu\u00e1 tr\u00ecnh n\u00e0y t\u1ea1o ra m\u1ed9t n\u1ec1n t\u1ea3ng \u0111\u1ed3ng nh\u1ea5t cho qu\u00e1 tr\u00ecnh t\u00f4i c\u1ee9ng ti\u1ebfp theo.<\/p><h3 class=\"wp-block-heading\">2. \u1ee6<\/h3><p>\u0110\u1ec3 t\u0103ng kh\u1ea3 n\u0103ng gia c\u00f4ng v\u00e0 gi\u1ea3m \u1ee9ng su\u1ea5t b\u00ean trong, AISI 4320 \u0111\u01b0\u1ee3c \u1ee7 \u1edf nhi\u1ec7t \u0111\u1ed9 872\u00b0C (1600\u00b0F) trong l\u00f2 nung \u0111i\u1ec1u khi\u1ec3n kh\u00ed quy\u1ec3n. Sau \u0111\u00f3, th\u00e9p \u0111\u01b0\u1ee3c l\u00e0m ngu\u1ed9i d\u1ea7n v\u1edbi t\u1ed1c \u0111\u1ed9 \u226422\u00b0C\/gi\u1edd (40\u00b0F\/gi\u1edd) \u0111\u1ec3 tr\u00e1nh cong v\u00eanh, \u0111\u1ea1t \u0111\u01b0\u1ee3c tr\u1ea1ng th\u00e1i m\u1ec1m, d\u1ec5 gia c\u00f4ng, l\u00fd t\u01b0\u1edfng cho gia c\u00f4ng ph\u1ee9c t\u1ea1p.<\/p><h3 class=\"wp-block-heading\">3. L\u00e0m c\u1ee9ng<\/h3><p>Qu\u00e1 tr\u00ecnh l\u00e0m c\u1ee9ng quan tr\u1ecdng \u0111\u1ed1i v\u1edbi kh\u1ea3 n\u0103ng ch\u1ed1ng m\u00e0i m\u00f2n, bao g\u1ed3m:<\/p><ul class=\"wp-block-list\"><li>Austenit h\u00f3a: \u0110un n\u00f3ng \u0111\u1ebfn 816\u2013843\u00b0C (1500\u20131550\u00b0F) \u0111\u1ec3 h\u00f2a tan cacbua.<\/li>\n\n<li>L\u00e0m ngu\u1ed9i: L\u00e0m ngu\u1ed9i d\u1ea7u nhanh \u1edf nhi\u1ec7t \u0111\u1ed9 40\u201380\u00b0C (104\u2013176\u00b0F) \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c c\u1ea5u tr\u00fac martensitic v\u1edbi \u0111\u1ed9 c\u1ee9ng b\u1ec1 m\u1eb7t l\u00ean t\u1edbi 62 HRC.<\/li><\/ul><h3 class=\"wp-block-heading\">4. \u1ee6<\/h3><p>\u0110\u1ed9 gi\u00f2n sau khi t\u00f4i \u0111\u01b0\u1ee3c gi\u1ea3m thi\u1ec3u b\u1eb1ng c\u00e1ch ram \u1edf nhi\u1ec7t \u0111\u1ed9 205\u2013650\u00b0C (400\u20131200\u00b0F). Nhi\u1ec7t \u0111\u1ed9 th\u1ea5p h\u01a1n (205\u2013425\u00b0C\/400\u2013800\u00b0F) \u01b0u ti\u00ean \u0111\u1ed9 c\u1ee9ng cho b\u00e1nh r\u0103ng, trong khi ph\u1ea1m vi nhi\u1ec7t \u0111\u1ed9 cao h\u01a1n (480\u2013650\u00b0C\/900\u20131200\u00b0F) t\u1ed1i \u01b0u h\u00f3a \u0111\u1ed9 d\u1ebbo dai cho c\u00e1c b\u1ed9 ph\u1eadn ch\u1ecbu t\u1ea3i va \u0111\u1eadp nh\u01b0 tr\u1ee5c xe.<\/p><h2 class=\"wp-block-heading\">Th\u00e9p 4320 Gia c\u00f4ng n\u00f3ng<\/h2><p>Th\u00e9p h\u1ee3p kim AISI 4320 \u0111\u01b0\u1ee3c \u0111\u1ecbnh h\u00ecnh t\u1ed1i \u01b0u \u1edf nhi\u1ec7t \u0111\u1ed9 cao (900\u20131200\u00b0C \/ 1650\u20132200\u00b0F) \u0111\u1ec3 t\u0103ng \u0111\u1ed9 d\u1ebbo v\u00e0 gi\u1ea3m l\u1ef1c c\u1ea3n t\u1ea1o h\u00ecnh. SteelPro Group s\u1eed d\u1ee5ng:<\/p><ul class=\"wp-block-list\"><li><strong>R\u00e8n n\u00f3ng<\/strong>: M\u00e1y \u00e9p th\u1ee7y l\u1ef1c c\u00f4ng su\u1ea5t l\u1edbn (l\u00ean t\u1edbi 12.000 t\u1ea5n) \u0111\u00fac c\u00e1c ph\u00f4i \u0111\u00e3 \u0111\u01b0\u1ee3c l\u00e0m n\u00f3ng tr\u01b0\u1edbc th\u00e0nh c\u00e1c h\u00ecnh d\u1ea1ng ph\u1ee9c t\u1ea1p nh\u01b0 tr\u1ee5c khu\u1ef7u ho\u1eb7c m\u1eb7t b\u00edch.<\/li>\n\n<li><strong>C\u00e1n n\u00f3ng<\/strong>: Chuy\u1ec3n \u0111\u1ed5i c\u00e1c b\u00f4ng hoa th\u00e0nh thanh ho\u1eb7c t\u1ea5m \u1edf nhi\u1ec7t \u0111\u1ed9 1050\u20131150\u00b0C (1922\u20132102\u00b0F), \u0111\u1ea1t \u0111\u01b0\u1ee3c dung sai \u0111\u1ed9 d\u00e0y \u00b11,5mm (\u00b10,06\u2033).<\/li>\n\n<li><strong>\u0110\u1ed9 \u1ed5n \u0111\u1ecbnh nhi\u1ec7t<\/strong>: Sau khi gia c\u00f4ng n\u00f3ng, c\u00e1c b\u1ed9 ph\u1eadn s\u1ebd \u0111\u01b0\u1ee3c l\u00e0m m\u00e1t c\u00f3 ki\u1ec3m so\u00e1t trong bu\u1ed3ng kh\u00ed tr\u01a1 \u0111\u1ec3 gi\u1ea3m thi\u1ec3u hi\u1ec7n t\u01b0\u1ee3ng tho\u00e1t cacbon.<\/li><\/ul><h2 class=\"wp-block-heading\">Th\u00e9p 4320 Gia c\u00f4ng ngu\u1ed9i<\/h2><p>C\u00e1c quy tr\u00ecnh t\u1ea1o h\u00ecnh ngu\u1ed9i gi\u00fap tinh ch\u1ec9nh k\u00edch th\u01b0\u1edbc v\u00e0 c\u1ea3i thi\u1ec7n b\u1ec1 m\u1eb7t ho\u00e0n thi\u1ec7n m\u00e0 kh\u00f4ng c\u1ea7n d\u00f9ng nhi\u1ec7t:<\/p><ul class=\"wp-block-list\"><li><strong>V\u1ebd l\u1ea1nh<\/strong>: Gi\u1ea3m \u0111\u01b0\u1eddng k\u00ednh thanh\/d\u00e2y t\u1eeb 15\u201330% \u1edf nhi\u1ec7t \u0111\u1ed9 ph\u00f2ng, t\u0103ng c\u01b0\u1eddng \u0111\u1ed9 b\u1ec1n k\u00e9o t\u1eeb 10\u201315%.<\/li>\n\n<li><strong>\u0110\u1ea7u l\u1ea1nh<\/strong>: S\u1ea3n xu\u1ea5t bu l\u00f4ng, \u1ed1c v\u00edt v\u00e0 \u0111inh t\u00e1n v\u1edbi \u0111\u1ed9 ch\u00ednh x\u00e1c (\u00b10,05mm) v\u00e0 gi\u1ea3m thi\u1ec3u l\u00e3ng ph\u00ed v\u1eadt li\u1ec7u.<\/li>\n\n<li><strong>Gi\u1ea3m c\u0103ng th\u1eb3ng<\/strong>: \u1ee6 sau khi l\u00e0m ngu\u1ed9i \u1edf nhi\u1ec7t \u0111\u1ed9 540\u2013650\u00b0C (1004\u20131202\u00b0F) gi\u00fap kh\u00f4i ph\u1ee5c \u0111\u1ed9 d\u1ebbo cho c\u00e1c \u1ee9ng d\u1ee5ng quan tr\u1ecdng.<\/li><\/ul><h2 class=\"wp-block-heading\">M\u00e1y th\u00e9p 4320<\/h2><p>Th\u00e9p AISI 4320 d\u1ec5 gia c\u00f4ng, ph\u00f9 h\u1ee3p cho c\u00e1c quy tr\u00ecnh ch\u00ednh x\u00e1c nh\u01b0 ti\u1ec7n, phay, khoan v\u00e0 m\u00e0i. H\u00e0m l\u01b0\u1ee3ng carbon th\u1ea5p \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 ho\u00e0n thi\u1ec7n b\u1ec1 m\u1eb7t t\u1ed1t v\u00e0 \u0111\u1ed9 ch\u00ednh x\u00e1c k\u00edch th\u01b0\u1edbc khi gia c\u00f4ng trong \u0111i\u1ec1u ki\u1ec7n \u1ee7 ho\u1eb7c th\u01b0\u1eddng h\u00f3a.<\/p><h2 class=\"wp-block-heading\">H\u00e0n th\u00e9p 4320<\/h2><p>Th\u00e9p AISI 4320 h\u00e0n t\u1ed1t, \u0111\u1eb7c bi\u1ec7t khi \u0111\u01b0\u1ee3c nung n\u00f3ng tr\u01b0\u1edbc \u1edf nhi\u1ec7t \u0111\u1ed9 150-300\u00b0C (302-572\u00b0F). Vi\u1ec7c nung n\u00f3ng tr\u01b0\u1edbc gi\u00fap ng\u0103n ng\u1eeba n\u1ee9t g\u00e3y, v\u00e0 c\u00f3 th\u1ec3 c\u1ea7n x\u1eed l\u00fd nhi\u1ec7t sau khi h\u00e0n \u0111\u1ec3 gi\u1ea3m \u1ee9ng su\u1ea5t v\u00e0 gi\u1ea3m \u0111\u1ed9 c\u1ee9ng \u1edf v\u00f9ng b\u1ecb \u1ea3nh h\u01b0\u1edfng.<\/p><h2 class=\"wp-block-heading\">N\u00e2ng t\u1ea7m k\u1ef9 thu\u1eadt c\u1ee7a b\u1ea1n v\u1edbi th\u00e9p 4320 c\u1ee7a ch\u00fang t\u00f4i&nbsp;<\/h2><p>T\u1ea1i SteelPro Group, ch\u00fang t\u00f4i bi\u1ebfn nh\u1eefng \u0111\u1eb7c t\u00ednh v\u01b0\u1ee3t tr\u1ed9i c\u1ee7a th\u00e9p h\u1ee3p kim AISI 4320 th\u00e0nh nh\u1eefng gi\u1ea3i ph\u00e1p thi\u1ebft th\u1ef1c, gi\u00fap d\u1ef1 \u00e1n c\u1ee7a b\u1ea1n ti\u1ebfn tri\u1ec3n. N\u0103ng l\u1ef1c t\u00edch h\u1ee3p theo chi\u1ec1u d\u1ecdc c\u1ee7a ch\u00fang t\u00f4i \u0111\u1ea3m b\u1ea3o:<\/p><ul class=\"wp-block-list\"><li><strong>\u0110\u1ea3m b\u1ea3o ch\u1ea5t l\u01b0\u1ee3ng<\/strong>: S\u1ea3n xu\u1ea5t \u0111\u1ea1t ch\u1ee9ng nh\u1eadn ISO 9001 v\u1edbi kh\u1ea3 n\u0103ng truy xu\u1ea5t ngu\u1ed3n g\u1ed1c \u0111\u1ea7y \u0111\u1ee7, t\u1eeb nguy\u00ean li\u1ec7u th\u00f4 \u0111\u1ebfn kh\u00e2u ki\u1ec3m tra cu\u1ed1i c\u00f9ng.<\/li>\n\n<li><strong>D\u1ecbch v\u1ee5 \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf ri\u00eang<\/strong>: X\u1eed l\u00fd nhi\u1ec7t theo y\u00eau c\u1ea7u (th\u1ea5m cacbon, th\u1ea5m nit\u01a1), gia c\u00f4ng CNC (dung sai \u00b10,005mm) v\u00e0 ho\u00e0n thi\u1ec7n b\u1ec1 m\u1eb7t (m\u00e0i, \u0111\u00e1nh b\u00f3ng).<\/li><\/ul><p>H\u00e3y li\u00ean h\u1ec7 v\u1edbi SteelPro Group ngay h\u00f4m nay \u0111\u1ec3 \u0111\u01b0\u1ee3c t\u01b0 v\u1ea5n v\u1eadt li\u1ec7u mi\u1ec5n ph\u00ed ho\u1eb7c y\u00eau c\u1ea7u b\u00e1o gi\u00e1 t\u00f9y ch\u1ec9nh. H\u00e3y c\u00f9ng nhau h\u1ee3p t\u00e1c \u0111\u1ec3 t\u1ea1o n\u00ean \u0111\u1ed9 b\u1ec1n l\u00e2u d\u00e0i.<\/p>","protected":false},"excerpt":{"rendered":"<p>Looking for a high-performance alloy steel that combines toughness, weldability, and wear resistance? AISI 4320 alloy steel stands out as [&hellip;]<\/p>","protected":false},"author":12,"featured_media":21358,"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-21368","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\/21368","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=21368"}],"version-history":[{"count":0,"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/posts\/21368\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/media\/21358"}],"wp:attachment":[{"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/media?parent=21368"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/categories?post=21368"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/tags?post=21368"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}