{"id":2141,"date":"2021-05-07T12:26:20","date_gmt":"2021-05-07T12:26:20","guid":{"rendered":"https:\/\/wldstainless.com\/?p=2141"},"modified":"2021-05-07T12:27:07","modified_gmt":"2021-05-07T12:27:07","slug":"whats-super304h-steel","status":"publish","type":"post","link":"https:\/\/wldstainless.com\/vi\/whats-super304h-steel\/","title":{"rendered":"Th\u00e9p Super 304H l\u00e0 g\u00ec?"},"content":{"rendered":"

V\u1edbi s\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a c\u00e1c thi\u1ebft b\u1ecb si\u00eau t\u1edbi h\u1ea1n, \u0111\u1ed9 b\u1ec1n nhi\u1ec7t \u0111\u1ed9 cao c\u1ee7a th\u00e9p kh\u00f4ng g\u1ec9 Austenitic 18-8 truy\u1ec1n th\u1ed1ng (nh\u01b0 th\u00e9p TP304H) \u0111\u00e3 kh\u00f4ng th\u1ec3 \u0111\u00e1p \u1ee9ng nhu c\u1ea7u c\u1ee7a ch\u00fang v\u1edbi th\u00f4ng s\u1ed1 h\u01a1i n\u01b0\u1edbc 600oC. V\u00ec l\u00fd do n\u00e0y, T\u1eadp \u0111o\u00e0n kim lo\u1ea1i Sumitomo Nh\u1eadt B\u1ea3n \u0111\u00e3 ph\u00e1t tri\u1ec3n c\u00e1c v\u1eadt li\u1ec7u m\u1edbi cho \u0111\u01b0\u1eddng \u1ed1ng b\u1ec1 m\u1eb7t gia nhi\u1ec7t n\u1ed3i h\u01a1i c\u1ee7a thi\u1ebft b\u1ecb, nh\u01b0 th\u00e9p TP347HFG, th\u00e9p SUPER304H v\u00e0 th\u00e9p HR3C. Th\u00e9p Super 304H l\u00e0 m\u1ed9t lo\u1ea1i th\u00e9p m\u1edbi th\u00e9p 18-8<\/a>, ch\u1ee7 y\u1ebfu \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong s\u1ea3n xu\u1ea5t b\u1ed9 qu\u00e1 nhi\u1ec7t v\u00e0 h\u00e2m n\u00f3ng n\u1ed3i h\u01a1i si\u00eau t\u1edbi h\u1ea1n c\u00f3 nhi\u1ec7t \u0111\u1ed9 th\u00e0nh kim lo\u1ea1i kh\u00f4ng v\u01b0\u1ee3t qu\u00e1 700oC. Hi\u1ec7n nay, Shasqida Mannesmann (tr\u01b0\u1edbc \u0111\u00e2y l\u00e0 C\u00f4ng ty DMV) \u1edf \u0110\u1ee9c c\u0169ng s\u1ea3n xu\u1ea5t \u1ed1ng th\u00e9p t\u01b0\u01a1ng t\u1ef1, v\u1edbi m\u00e1c DMV 304HCU.<\/p>\n

Th\u00e9p Super304H l\u00e0 th\u00e9p \u0111\u01b0\u1ee3c gi\u1ea3m h\u00e0m l\u01b0\u1ee3ng Mn, Si, Cr v\u00e0 Ni tr\u00ean n\u1ec1n th\u00e9p TP304H, trong \u0111\u00f3 b\u1ed5 sung th\u00eam 2,5%~3,5% Cu v\u00e0 0,30%~0,60% Nb v\u00e0 0,05%~0,12% Nb, do \u0111\u00f3 \u0111\u1ec3 t\u1ea1o ra pha k\u1ebft t\u1ee7a khu\u1ebfch t\u00e1n v\u00e0 pha t\u0103ng c\u01b0\u1eddng gi\u00e0u \u0111\u1ed3ng trong d\u1ecbch v\u1ee5, x\u1ea3y ra qu\u00e1 tr\u00ecnh t\u0103ng c\u01b0\u1eddng k\u1ebft t\u1ee7a v\u1edbi NbC(N), NbCrN v\u00e0 M23C6, l\u00e0m t\u0103ng \u0111\u00e1ng k\u1ec3 \u1ee9ng su\u1ea5t cho ph\u00e9p \u1edf nhi\u1ec7t \u0111\u1ed9 s\u1eed d\u1ee5ng v\u00e0 \u1ee9ng su\u1ea5t cho ph\u00e9p \u1edf 600 ~ 650oC cao h\u01a1n 30% h\u01a1n th\u00e9p TP347H. Kh\u1ea3 n\u0103ng ch\u1ed1ng oxy h\u00f3a h\u01a1i n\u01b0\u1edbc c\u1ee7a th\u00e9p t\u01b0\u01a1ng \u0111\u01b0\u01a1ng v\u1edbi th\u00e9p TP347HFG v\u00e0 t\u1ed1t h\u01a1n \u0111\u00e1ng k\u1ec3 so v\u1edbi th\u00e9p TP321H. N\u00f3 \u0111\u00e3 \u0111\u01b0\u1ee3c li\u1ec7t k\u00ea trong M\u00e3 ASME Case 2328-1, Ti\u00eau chu\u1ea9n ASTM A-213, s\u1ed1 hi\u1ec7u l\u00e0 S30432.<\/p>\n

 <\/p>\n

Th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc c\u1ee7a Super 304H<\/strong><\/p>\n\n\n\n\n
C<\/td>\nS\u0129<\/td>\nMn<\/td>\nP<\/td>\nS<\/td>\nCr<\/td>\nNi<\/td>\nN<\/td>\nAl<\/td>\nB<\/td>\nNb<\/td>\nC\u1ee7<\/td>\nV.<\/td>\nM\u01a1<\/td>\n<\/tr>\n
0.08<\/td>\n0.21<\/td>\n0.79<\/td>\n0.03<\/td>\n0.001<\/td>\n18.42<\/td>\n8.66<\/td>\n0.11<\/td>\n0.007<\/td>\n0.004<\/td>\n0.5<\/td>\n2.77<\/td>\n0.04<\/td>\n0.35<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

 <\/p>\n

T\u00ednh ch\u1ea5t c\u01a1 h\u1ecdc c\u1ee7a Super 304H<\/strong><\/p>\n\n\n\n\n
S\u1ee9c m\u1ea1nh n\u0103ng su\u1ea5t, Mpa<\/td>\n\u0110\u1ed9 b\u1ec1n k\u00e9o, Mpa<\/td>\n\u0110\u1ed9 gi\u00e3n d\u00e0i, %<\/td>\n<\/tr>\n
360\/350<\/td>\n640\/645<\/td>\n58\/60<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

 <\/p>\n

Do th\u00f4ng s\u1ed1 h\u01a1i cao c\u1ee7a c\u00e1c thi\u1ebft b\u1ecb si\u00eau t\u1edbi h\u1ea1n n\u00ean kh\u1ea3 n\u0103ng ch\u1ed1ng oxy h\u00f3a c\u1ee7a th\u00e9p d\u00f9ng trong c\u00e1c b\u1ed9 ph\u1eadn c\u00f3 \u00e1p su\u1ea5t nhi\u1ec7t \u0111\u1ed9 cao c\u1ee7a nh\u00e0 m\u00e1y \u0111i\u1ec7n tr\u1edf n\u00ean r\u1ea5t quan tr\u1ecdng. N\u00f3i chung, th\u00e0nh trong c\u1ee7a \u1ed1ng th\u00e9p si\u00eau 304H \u0111\u01b0\u1ee3c phun n\u1ed5 \u0111\u1ec3 c\u1ea3i thi\u1ec7n hi\u1ec7u su\u1ea5t oxy h\u00f3a ch\u1ed1ng h\u01a1i n\u01b0\u1edbc. M\u1ed9t l\u1edbp n\u1ed5 b\u1eafn d\u00e0y 30\u03bcm \u0111\u01b0\u1ee3c h\u00ecnh th\u00e0nh tr\u00ean b\u1ec1 m\u1eb7t b\u00ean trong c\u1ee7a \u1ed1ng th\u00e9p v\u00e0 c\u1ea5u tr\u00fac vi m\u00f4 c\u1ee7a n\u00f3 \u0111\u00e3 \u0111\u01b0\u1ee3c c\u1ea3i ti\u1ebfn so v\u1edbi c\u1ea5u tr\u00fac vi m\u00f4 c\u1ee7a \u1ed1ng th\u00e9p kh\u00f4ng b\u1eafn. Sau th\u1eed nghi\u1ec7m oxy h\u00f3a h\u01a1i n\u01b0\u1edbc \u1edf 650oC v\u00e0 600h, \u0111\u1ed9 d\u00e0y l\u1edbp oxit c\u1ee7a \u1ed1ng th\u00e9p \u0111\u01b0\u1ee3c x\u1eed l\u00fd b\u1eb1ng v\u1ee5 n\u1ed5 m\u1ecfng h\u01a1n v\u00e0 \u0111\u1eadm \u0111\u1eb7c h\u01a1n, \u0111\u1ed3ng th\u1eddi kh\u1ea3 n\u0103ng ch\u1ed1ng oxy h\u00f3a h\u01a1i n\u01b0\u1edbc c\u1ee7a \u1ed1ng th\u00e9p \u0111\u01b0\u1ee3c c\u1ea3i thi\u1ec7n. Hi\u1ec7n t\u1ea1i, m\u1ed9t s\u1ed1 nh\u00e0 m\u00e1y th\u00e9p h\u00e0ng \u0111\u1ea7u \u1edf Trung Qu\u1ed1c \u0111\u00e3 s\u1ea3n xu\u1ea5t lo\u1ea1i 10CrL8Ni9NbCu3Bn t\u01b0\u01a1ng t\u1ef1, \u0111\u01b0\u1ee3c quy \u0111\u1ecbnh trong GB 5310-2008, lo\u1ea1i n\u00e0y hi\u1ec7n \u0111ang \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong m\u1ed9t s\u1ed1 d\u1ef1 \u00e1n thi\u1ebft b\u1ecb si\u00eau t\u1edbi h\u1ea1n \u1edf Trung Qu\u1ed1c.<\/p>","protected":false},"excerpt":{"rendered":"

V\u1edbi s\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a c\u00e1c thi\u1ebft b\u1ecb si\u00eau t\u1edbi h\u1ea1n, \u0111\u1ed9 b\u1ec1n nhi\u1ec7t \u0111\u1ed9 cao c\u1ee7a th\u00e9p kh\u00f4ng g\u1ec9 Austenitic 18-8 truy\u1ec1n th\u1ed1ng (nh\u01b0 th\u00e9p TP304H) \u0111\u00e3 kh\u00f4ng th\u1ec3 \u0111\u00e1p \u1ee9ng nhu c\u1ea7u c\u1ee7a ch\u00fang v\u1edbi th\u00f4ng s\u1ed1 h\u01a1i n\u01b0\u1edbc 600oC. V\u00ec l\u00fd do n\u00e0y, T\u1eadp \u0111o\u00e0n Kim lo\u1ea1i Sumitomo Nh\u1eadt B\u1ea3n \u0111\u00e3 ph\u00e1t tri\u1ec3n c\u00e1c v\u1eadt li\u1ec7u m\u1edbi cho \u0111\u01b0\u1eddng \u1ed1ng b\u1ec1 m\u1eb7t gia nhi\u1ec7t n\u1ed3i h\u01a1i c\u1ee7a thi\u1ebft b\u1ecb, nh\u01b0 th\u00e9p TP347HFG, SUPER304H [\u2026]<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[23],"tags":[],"class_list":["post-2141","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/wldstainless.com\/vi\/wp-json\/wp\/v2\/posts\/2141","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/wldstainless.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/wldstainless.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/wldstainless.com\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/wldstainless.com\/vi\/wp-json\/wp\/v2\/comments?post=2141"}],"version-history":[{"count":2,"href":"https:\/\/wldstainless.com\/vi\/wp-json\/wp\/v2\/posts\/2141\/revisions"}],"predecessor-version":[{"id":2143,"href":"https:\/\/wldstainless.com\/vi\/wp-json\/wp\/v2\/posts\/2141\/revisions\/2143"}],"wp:attachment":[{"href":"https:\/\/wldstainless.com\/vi\/wp-json\/wp\/v2\/media?parent=2141"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/wldstainless.com\/vi\/wp-json\/wp\/v2\/categories?post=2141"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/wldstainless.com\/vi\/wp-json\/wp\/v2\/tags?post=2141"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}