{"id":2164,"date":"2021-07-14T14:44:22","date_gmt":"2021-07-14T14:44:22","guid":{"rendered":"https:\/\/wldstainless.com\/?p=2164"},"modified":"2021-07-14T14:44:22","modified_gmt":"2021-07-14T14:44:22","slug":"how-to-choose-the-right-stainless-steel-grades","status":"publish","type":"post","link":"https:\/\/wldstainless.com\/vi\/how-to-choose-the-right-stainless-steel-grades\/","title":{"rendered":"L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 ch\u1ecdn \u0111\u00fang lo\u1ea1i th\u00e9p kh\u00f4ng g\u1ec9?"},"content":{"rendered":"<p>Th\u00e9p kh\u00f4ng g\u1ec9 l\u00e0 kim lo\u1ea1i ph\u1ed5 bi\u1ebfn nh\u1ea5t \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong \u0111\u1ed3 d\u00f9ng nh\u00e0 b\u1ebfp v\u00e0 c\u00e1c \u1ee9ng d\u1ee5ng th\u01b0\u01a1ng m\u1ea1i kh\u00e1c v\u00ec \u0111\u1ed9 b\u1ec1n v\u00e0 kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n. Tuy nhi\u00ean, th\u00e9p kh\u00f4ng g\u1ec9 d\u1ec5 b\u1ecb \u0103n m\u00f2n n\u1ebfu ti\u1ebfp x\u00fac v\u1edbi n\u01b0\u1edbc m\u1eb7n v\u00e0 m\u1ed9t s\u1ed1 h\u00f3a ch\u1ea5t. Khi mua \u0111\u00fang lo\u1ea1i th\u00e9p kh\u00f4ng g\u1ec9, b\u1ea1n n\u00ean \u0111\u1ea3m b\u1ea3o r\u1eb1ng b\u1ed1n thu\u1eadt ng\u1eef sau \u2013 Ch\u1ed1ng \u0103n m\u00f2n, t\u00ednh ch\u1ea5t c\u01a1 h\u1ecdc, kh\u1ea3 n\u0103ng gia c\u00f4ng, kh\u1ea3 n\u0103ng h\u00e0n, x\u1eed l\u00fd b\u1ec1 m\u1eb7t, ph\u1ee5 thu\u1ed9c v\u00e0o m\u1ee9c \u0111\u1ed9 ch\u1ed1ng m\u00e0i m\u00f2n v\u00e0 c\u00e1c gi\u1ea3i ph\u00e1p \u0103n m\u00f2n g\u1eb7p ph\u1ea3i trong qu\u00e1 tr\u00ecnh ho\u00e0n thi\u1ec7n ho\u1eb7c gia v\u1ecb qu\u00e1 tr\u00ecnh. H\u01a1n n\u1eefa, lo\u1ea1i ho\u00e0n thi\u1ec7n \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng v\u00e0 m\u1ee9c \u0111\u1ed9 h\u1ee3p kim trong x\u00e2y d\u1ef1ng quy\u1ebft \u0111\u1ecbnh th\u00e0nh ph\u1ea7n c\u1ee7a l\u1edbp cu\u1ed1i c\u00f9ng.<\/p>\n<p>&nbsp;<\/p>\n<p><strong>Ch\u1ed1ng \u0103n m\u00f2n<\/strong><\/p>\n<p>Kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n bao g\u1ed3m kh\u00f4ng g\u1ec9 v\u00e0 axit, ki\u1ec1m, mu\u1ed1i v\u00e0 c\u00e1c \u0111\u1eb7c t\u00ednh \u0103n m\u00f2n kh\u00e1c, c\u0169ng nh\u01b0 kh\u1ea3 n\u0103ng ch\u1ed1ng oxy h\u00f3a \u1edf nhi\u1ec7t \u0111\u1ed9 cao, ch\u1ed1ng \u0103n m\u00f2n v\u00e0 c\u00e1c \u0111\u1eb7c t\u00ednh kh\u00e1c. L\u1ef1a ch\u1ecdn d\u1ef1 \u00e1n th\u00e9p kh\u00f4ng g\u1ec9 l\u00e0 \u0111\u1ec3 gi\u1ea3i quy\u1ebft c\u00e1c v\u1ea5n \u0111\u1ec1 \u0103n m\u00f2n kh\u00e1c nhau g\u1eb7p ph\u1ea3i trong k\u1ef9 thu\u1eadt, do \u0111\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n c\u1ee7a th\u00e9p kh\u00f4ng g\u1ec9 trong m\u00f4i tr\u01b0\u1eddng \u0103n m\u00f2n c\u00f3 th\u1ec3 \u0111\u1ea3m b\u1ea3o c\u00e1c thi\u1ebft b\u1ecb trong v\u00f2ng \u0111\u1eddi s\u1eed d\u1ee5ng c\u00f3 \u0111\u1ee7 kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n, \u0111\u1ea3m b\u1ea3o thi\u1ebft b\u1ecb v\u1eadn h\u00e0nh an to\u00e0n , l\u00e0 \u01b0u ti\u00ean h\u00e0ng \u0111\u1ea7u khi l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u c\u1ea7n ch\u00fa \u00fd \u0111\u1ebfn c\u00e1c \u0111i\u1ec1u kho\u1ea3n sau: ti\u00eau chu\u1ea9n v\u1ec1 kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh b\u1edfi con ng\u01b0\u1eddi, kh\u00f4ng th\u1ec3 b\u1ecb gi\u1edbi h\u1ea1n b\u1edfi n\u00f3 v\u00e0 b\u1ea1n kh\u00f4ng th\u1ec3 b\u1ecf qua n\u00f3, n\u00ean s\u1eed d\u1ee5ng c\u00e1c \u0111i\u1ec1u ki\u1ec7n s\u1eed d\u1ee5ng y\u00eau c\u1ea7u \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh m\u1ee9c \u0111\u1ed9 ph\u00f9 h\u1ee3p c\u1ea5p.<\/p>\n<p>Cho \u0111\u1ebfn nay, kh\u00f4ng c\u00f3 lo\u1ea1i th\u00e9p kh\u00f4ng g\u1ec9 n\u00e0o c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng g\u1ec9 t\u1ed1t trong m\u1ecdi m\u00f4i tr\u01b0\u1eddng, ch\u1ed1ng \u0103n m\u00f2n nh\u01b0ng c\u00f3 m\u1ed9t lo\u1ea1i th\u00e9p ph\u00f9 h\u1ee3p h\u01a1n v\u1edbi m\u1ed9t m\u00f4i tr\u01b0\u1eddng c\u1ee5 th\u1ec3. \u0110i\u1ec1u \u0111\u00e1ng ch\u00fa \u00fd l\u00e0 vi\u1ec7c l\u1ef1a ch\u1ecdn th\u00e9p kh\u00f4ng g\u1ec9 kh\u00f4ng ch\u1ec9 n\u00ean xem x\u00e9t kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n chung m\u00e0 c\u00f2n ph\u1ea3i xem x\u00e9t kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n c\u1ee5c b\u1ed9 c\u1ee7a n\u00f3. \u0110\u1eb7c bi\u1ec7t trong m\u00f4i tr\u01b0\u1eddng n\u01b0\u1edbc v\u00e0 m\u00f4i tr\u01b0\u1eddng h\u00f3a h\u1ecdc, m\u00f4i tr\u01b0\u1eddng sau \u0111\u1eb7c bi\u1ec7t quan tr\u1ecdng. Kinh nghi\u1ec7m \u0111\u00e3 ch\u1ee9ng minh r\u1eb1ng vi\u1ec7c ph\u00e1 h\u1ee7y \u0111\u1ed9t ng\u1ed9t c\u00e1c thi\u1ebft b\u1ecb v\u00e0 linh ki\u1ec7n b\u1eb1ng th\u00e9p kh\u00f4ng g\u1ec9, \u0103n m\u00f2n c\u1ee5c b\u1ed9 s\u1ebd c\u00f3 h\u1ea1i h\u01a1n \u0103n m\u00f2n n\u00f3i chung. Khi tr\u00edch d\u1eabn d\u1eef li\u1ec7u v\u1ec1 kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n c\u1ee7a th\u00e9p kh\u00f4ng g\u1ec9 trong c\u00e1c s\u00e1ch h\u01b0\u1edbng d\u1eabn v\u00e0 t\u00e0i li\u1ec7u kh\u00e1c nhau, c\u1ea7n ch\u00fa \u00fd \u0111\u1ebfn th\u1ef1c t\u1ebf r\u1eb1ng nhi\u1ec1u trong s\u1ed1 \u0111\u00f3 l\u00e0 d\u1eef li\u1ec7u th\u1eed nghi\u1ec7m v\u00e0 th\u01b0\u1eddng c\u00f3 s\u1ef1 kh\u00e1c bi\u1ec7t l\u1edbn v\u1edbi m\u00f4i tr\u01b0\u1eddng truy\u1ec1n th\u00f4ng th\u1ef1c t\u1ebf.<\/p>\n<p>&nbsp;<\/p>\n<p><strong>T\u00ednh ch\u1ea5t c\u01a1 h\u1ecdc<\/strong><\/p>\n<p>C\u00e1c t\u00ednh ch\u1ea5t c\u01a1 h\u1ecdc bao g\u1ed3m \u0111\u1ed9 b\u1ec1n, \u0111\u1ed9 c\u1ee9ng, \u0111\u1ed9 d\u1ebbo, \u0111\u1ed9 d\u1ebbo dai, \u0111\u1ed9 m\u1ecfi v\u00e0 c\u00e1c t\u00ednh ch\u1ea5t kh\u00e1c. L\u01b0u \u00fd r\u1eb1ng h\u1ea7u h\u1ebft c\u00e1c \u0111\u1eb7c t\u00ednh n\u00e0y \u0111\u00e3 \u0111\u01b0\u1ee3c \u0111o trong m\u00f4i tr\u01b0\u1eddng kh\u00ed quy\u1ec3n kh\u00f4ng c\u00f3 m\u00f4i tr\u01b0\u1eddng \u0103n m\u00f2n m\u1ea1nh. Khi \u1edf trong m\u00f4i tr\u01b0\u1eddng \u0103n m\u00f2n, c\u00e1c t\u00ednh ch\u1ea5t c\u01a1 h\u1ecdc n\u00e0y, ch\u1eb3ng h\u1ea1n nh\u01b0 \u0111\u1ed9 b\u1ec1n m\u1ecfi, gi\u1ea3m \u0111\u00e1ng k\u1ec3 v\u00e0 \u0111\u00f4i khi v\u01b0\u1ee3t xa gi\u1edbi h\u1ea1n c\u01b0\u1eddng \u0111\u1ed9 c\u1ee7a ch\u00fang d\u01b0\u1edbi \u1ee9ng su\u1ea5t k\u00e9o t\u0129nh v\u00e0 m\u00f4i tr\u01b0\u1eddng. \u0110\u1ed1i v\u1edbi c\u00e1c thi\u1ebft b\u1ecb ch\u1ecbu t\u1ea3i th\u01b0\u1eddng xuy\u00ean, ngo\u00e0i thi\u1ebft k\u1ebf \u0111\u1ed9 b\u1ec1n, c\u00f2n ph\u1ea3i thi\u1ebft k\u1ebf m\u1ecfi, \u0111\u1ec3 l\u00e0m vi\u1ec7c \u1edf nhi\u1ec7t \u0111\u1ed9 th\u1ea5p v\u00e0 ch\u1ecbu t\u1ea3i va \u0111\u1eadp c\u1ee7a c\u00e1c b\u1ed9 ph\u1eadn b\u1eb1ng th\u00e9p kh\u00f4ng g\u1ec9, ph\u1ea3i xem x\u00e9t \u0111\u1ed9 b\u1ec1n \u1edf nhi\u1ec7t \u0111\u1ed9 th\u1ea5p, \u0111\u1ed9 gi\u00f2n, nhi\u1ec7t \u0111\u1ed9 chuy\u1ec3n ti\u1ebfp, \u0111\u1ed9 b\u1ec1n g\u00e3y x\u01b0\u01a1ng \u1edf nhi\u1ec7t \u0111\u1ed9 th\u1ea5p; \u0110\u00f4i khi h\u1ec7 s\u1ed1 gi\u00e3n n\u1edf tuy\u1ebfn t\u00ednh ph\u1ea3i \u0111\u01b0\u1ee3c xem x\u00e9t.<\/p>\n<p>&nbsp;<\/p>\n<p><strong>Kh\u1ea3 n\u0103ng gia c\u00f4ng, kh\u1ea3 n\u0103ng h\u00e0n, x\u1eed l\u00fd b\u1ec1 m\u1eb7t<\/strong><\/p>\n<p>Ch\u00fang \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 c\u00f4ng ngh\u1ec7, l\u00e0 kh\u1ea3 n\u0103ng c\u1ee7a th\u00e9p kh\u00f4ng g\u1ec9 th\u00edch \u1ee9ng v\u1edbi qu\u00e1 tr\u00ecnh s\u1ea3n xu\u1ea5t thi\u1ebft b\u1ecb, ch\u1eb3ng h\u1ea1n nh\u01b0: sau khi x\u1eed l\u00fd h\u00ecnh d\u1ea1ng, k\u00edch th\u01b0\u1edbc, \u0111\u1ed9 ch\u00ednh x\u00e1c, \u0111\u1ed9 m\u1ecbn, v.v.; Ph\u01b0\u01a1ng ph\u00e1p h\u00e0n.<\/p>\n<p>\u0110\u1ec3 x\u00e1c \u0111\u1ecbnh kh\u1ea3 n\u0103ng ch\u1ed1ng axit v\u00e0 oxy h\u00f3a t\u1ed1t, \u0111i\u1ec1u quan tr\u1ecdng c\u1ea7n l\u01b0u \u00fd l\u00e0 th\u00e0nh ph\u1ea7n c\u1ee7a th\u00e9p kh\u00f4ng g\u1ec9. S\u1ef1 k\u1ebft h\u1ee3p t\u1ed1t c\u1ee7a h\u1ee3p kim n\u00e0y v\u1edbi v\u1eadt li\u1ec7u c\u00f3 h\u00e0m l\u01b0\u1ee3ng carbon th\u1ea5p s\u1ebd t\u1ea1o ra s\u1ef1 k\u1ebft h\u1ee3p gi\u1eefa kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n tuy\u1ec7t v\u1eddi v\u00e0 kh\u1ea3 n\u0103ng ch\u1ed1ng t\u1ea1p ch\u1ea5t tuy\u1ec7t v\u1eddi. S\u1ef1 k\u1ebft h\u1ee3p thu \u0111\u01b0\u1ee3c \u0111\u01b0\u1ee3c g\u1ecdi m\u1ed9t c\u00e1ch kh\u00e9o l\u00e9o l\u00e0 904L, vi\u1ebft t\u1eaft c\u1ee7a austenit h\u1ee3p kim cao. V\u1edbi h\u1ee3p kim n\u00e0y, b\u1ea1n kh\u00f4ng ch\u1ec9 \u0111\u01b0\u1ee3c \u0111\u1ea3m b\u1ea3o v\u1ec1 m\u1ed9t chi\u1ebfc m\u00e1y ch\u1eafc ch\u1eafn m\u00e0 c\u00f2n c\u00f3 kh\u1ea3 n\u0103ng c\u1eaft xuy\u00ean qua m\u1ecdi lo\u1ea1i b\u1ec1 m\u1eb7t.<\/p>\n<p><a href=\"https:\/\/wldstainless.com\/materials\/austenitic-stainless-steel\/904l-stainless-steel\/\">L\u1edbp 904L<\/a> Th\u00e9p kh\u00f4ng g\u1ec9 l\u00e0 kim lo\u1ea1i kh\u00f4ng g\u1ec9 austenit c\u00f3 h\u00e0m l\u01b0\u1ee3ng carbon th\u1ea5p v\u00e0 h\u00e0m l\u01b0\u1ee3ng crom cao. H\u00e0m l\u01b0\u1ee3ng crom cao n\u00e0y gi\u00fap c\u1ea3i thi\u1ec7n kh\u1ea3 n\u0103ng ch\u1ed1ng l\u1ea1i axit, bao g\u1ed3m c\u1ea3 axit sulfuric, gi\u1ea3m nguy c\u01a1 \u0103n m\u00f2n. Ngo\u00e0i ra, n\u00f3 c\u00f2n t\u0103ng c\u01b0\u1eddng \u0111\u1ed9 b\u1ec1n c\u1ee7a k\u1ebft c\u1ea5u b\u1eb1ng c\u00e1ch t\u0103ng \u0111\u1ed9 d\u1ebbo dai v\u00e0 ng\u0103n ng\u1eeba n\u1ee9t do m\u1ecfi. Ch\u00fang t\u00f4i l\u00e0 nh\u00e0 cung c\u1ea5p chuy\u00ean nghi\u1ec7p v\u00e0 trung t\u00e2m gia c\u00f4ng t\u1ea5m v\u00e0 \u1ed1ng th\u00e9p kh\u00f4ng g\u1ec9 904L ch\u1ea5t l\u01b0\u1ee3ng cao, b\u1ea5t k\u1ef3 ai quan t\u00e2m \u0111\u1ebfn ch\u00fang t\u00f4i, ch\u1ec9 c\u1ea7n g\u1ecdi cho ch\u00fang t\u00f4i.<\/p>","protected":false},"excerpt":{"rendered":"<p>Th\u00e9p kh\u00f4ng g\u1ec9 l\u00e0 kim lo\u1ea1i ph\u1ed5 bi\u1ebfn nh\u1ea5t \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong \u0111\u1ed3 d\u00f9ng nh\u00e0 b\u1ebfp v\u00e0 c\u00e1c \u1ee9ng d\u1ee5ng th\u01b0\u01a1ng m\u1ea1i kh\u00e1c v\u00ec \u0111\u1ed9 b\u1ec1n v\u00e0 kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n. Tuy nhi\u00ean, th\u00e9p kh\u00f4ng g\u1ec9 d\u1ec5 b\u1ecb \u0103n m\u00f2n n\u1ebfu ti\u1ebfp x\u00fac v\u1edbi n\u01b0\u1edbc m\u1eb7n v\u00e0 m\u1ed9t s\u1ed1 h\u00f3a ch\u1ea5t. Khi mua \u0111\u00fang lo\u1ea1i th\u00e9p kh\u00f4ng g\u1ec9, b\u1ea1n n\u00ean \u0111\u1ea3m b\u1ea3o b\u1ed1n thu\u1eadt ng\u1eef sau \u2013 Ch\u1ed1ng \u0103n m\u00f2n, t\u00ednh ch\u1ea5t c\u01a1 h\u1ecdc, [\u2026]<\/p>","protected":false},"author":1,"featured_media":2165,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[23],"tags":[],"class_list":["post-2164","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/wldstainless.com\/vi\/wp-json\/wp\/v2\/posts\/2164","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=2164"}],"version-history":[{"count":1,"href":"https:\/\/wldstainless.com\/vi\/wp-json\/wp\/v2\/posts\/2164\/revisions"}],"predecessor-version":[{"id":2166,"href":"https:\/\/wldstainless.com\/vi\/wp-json\/wp\/v2\/posts\/2164\/revisions\/2166"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/wldstainless.com\/vi\/wp-json\/wp\/v2\/media\/2165"}],"wp:attachment":[{"href":"https:\/\/wldstainless.com\/vi\/wp-json\/wp\/v2\/media?parent=2164"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/wldstainless.com\/vi\/wp-json\/wp\/v2\/categories?post=2164"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/wldstainless.com\/vi\/wp-json\/wp\/v2\/tags?post=2164"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}