X\u1eed l\u00fd nhi\u1ec7t: ch\u01b0a x\u1eed l\u00fd, x\u1eed l\u00fd dung d\u1ecbch r\u1eafn, x\u1eed l\u00fd dung d\u1ecbch r\u1eafn<\/em><\/p>\n <\/p>\n
Ki\u1ec3m tra \u0111\u1ed9 c\u1ee9ng<\/h3>\n
Ph\u1ea7n u\u1ed1n c\u1ee7a \u1ed1ng trao \u0111\u1ed5i nhi\u1ec7t h\u00ecnh ch\u1eef u kh\u00f4ng x\u1eed l\u00fd nhi\u1ec7t v\u00e0 x\u1eed l\u00fd dung d\u1ecbch ph\u1ee5: khi b\u00e1n k\u00ednh u\u1ed1n gi\u1ea3m, gi\u00e1 tr\u1ecb \u0111\u1ed9 c\u1ee9ng t\u0103ng l\u00ean. Gi\u00e1 tr\u1ecb \u0111\u1ed9 c\u1ee9ng c\u1ee7a \u1ed1ng trao \u0111\u1ed5i nhi\u1ec7t sau khi x\u1eed l\u00fd dung d\u1ecbch (so v\u1edbi tr\u01b0\u1edbc khi u\u1ed1n) kh\u00f4ng c\u00f3 s\u1ef1 thay \u0111\u1ed5i r\u00f5 r\u00e0ng. \u0110i\u1ec1u n\u00e0y cho th\u1ea5y hi\u1ec7u qu\u1ea3 l\u00e0m c\u1ee9ng gia c\u00f4ng th\u00e9p kh\u00f4ng g\u1ec9 Austenitic l\u00e0 r\u00f5 r\u00e0ng, v\u00e0 v\u1edbi s\u1ef1 gia t\u0103ng bi\u1ebfn d\u1ea1ng, xu h\u01b0\u1edbng gia c\u00f4ng c\u1ee9ng l\u1ea1i t\u0103ng l\u00ean.<\/p>\n
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Ki\u1ec3m tra b\u1eb1ng k\u00ednh hi\u1ec3n vi<\/h3>\n
\u0110\u1ed1i v\u1edbi ti\u1ebft di\u1ec7n u\u1ed1n h\u00ecnh ch\u1eef u c\u00f3 b\u00e1n k\u00ednh u\u1ed1n 40mm: trong vi c\u1ea5u tr\u00fac c\u00f3 nhi\u1ec1u \u0111\u01b0\u1eddng martensite v\u00e0 \u0111\u01b0\u1eddng tr\u01b0\u1ee3t m\u00e0 kh\u00f4ng qua x\u1eed l\u00fd nhi\u1ec7t, h\u00ecnh d\u1ea1ng \u0111\u1eb3ng tr\u1ee5c c\u1ee7a austenite trong vi c\u1ea5u tr\u00fac \u0111\u00e3 bi\u1ebfn m\u1ea5t ho\u00e0n to\u00e0n (qu\u00e1 nhi\u1ec1u martensite s\u1ebd l\u00e0m cho th\u00e9p gi\u00f2n). H\u1ea7u h\u1ebft martensite trong m\u00f4 \u0111\u01b0\u1ee3c x\u1eed l\u00fd b\u1eb1ng dung d\u1ecbch d\u01b0\u1edbi ch\u1ea5t r\u1eafn \u0111\u00e3 b\u1ecb bi\u1ebfn \u0111\u1ed5i, nh\u01b0ng m\u1ed9t l\u01b0\u1ee3ng nh\u1ecf martensite v\u1eabn t\u1ed3n t\u1ea1i.<\/p>\n
Sau khi x\u1eed l\u00fd dung d\u1ecbch, c\u00e1c h\u1ea1t austenite \u0111\u01b0\u1ee3c c\u00e2n b\u1eb1ng tr\u1ee5c v\u00e0 kh\u00f4ng t\u00ecm th\u1ea5y martensite. C\u00e1c d\u1ea3i tr\u01b0\u1ee3t v\u00e0 martensite c\u00f2n t\u1ed3n t\u1ea1i trong vi c\u1ea5u tr\u00fac kh\u00f4ng gia nhi\u1ec7t c\u1ee7a \u1ed1ng h\u00ecnh ch\u1eef u c\u00f3 b\u00e1n k\u00ednh u\u1ed1n R l\u00e0 115, 190, 265 v\u00e0 340mm sau khi u\u1ed1n nh\u01b0ng h\u00e0m l\u01b0\u1ee3ng gi\u1ea3m d\u1ea7n khi t\u0103ng b\u00e1n k\u00ednh u\u1ed1n. Khi b\u00e1n k\u00ednh u\u1ed1n R c\u1ee7a \u1ed1ng ch\u1eef U l\u1edbn h\u01a1n ho\u1eb7c b\u1eb1ng 265mm th\u00ec \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn vi c\u1ea5u tr\u00fac tr\u01b0\u1edbc v\u00e0 sau khi x\u1eed l\u00fd nhi\u1ec7t l\u00e0 kh\u00f4ng \u0111\u00e1ng k\u1ec3. Khi b\u00e1n k\u00ednh u\u1ed1n R nh\u1ecf h\u01a1n 265mm, c\u00f3 martensite trong c\u1ea5u tr\u00fac vi m\u00f4 c\u1ee7a c\u00e1c \u1ed1ng h\u00ecnh ch\u1eef U kh\u00f4ng \u0111\u01b0\u1ee3c gia nhi\u1ec7t v\u00e0 h\u00e0m l\u01b0\u1ee3ng martensite gi\u1ea3m khi t\u0103ng nhi\u1ec7t \u0111\u1ed9 x\u1eed l\u00fd nhi\u1ec7t (x\u1eed l\u00fd dung d\u1ecbch r\u1eafn v\u00e0 x\u1eed l\u00fd dung d\u1ecbch r\u1eafn).<\/p>\n
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Ki\u1ec3m tra \u0103n m\u00f2n gi\u1eefa c\u00e1c h\u1ea1t<\/h3>\n
B\u1eb1ng c\u00e1ch ki\u1ec3m tra b\u1eb1ng k\u00ednh hi\u1ec3n vi, ng\u01b0\u1eddi ta th\u1ea5y r\u1eb1ng s\u1ef1 hi\u1ec7n di\u1ec7n c\u1ee7a martensite kh\u00f4ng \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn s\u1ef1 \u0103n m\u00f2n gi\u1eefa c\u00e1c h\u1ea1t. M\u1eb7c d\u00f9 c\u00f3 m\u1ed9t l\u01b0\u1ee3ng l\u1edbn martensite trong c\u1ea5u tr\u00fac vi m\u00f4 tuy\u1ec7t \u0111\u1ed1i, nh\u01b0ng kh\u00f4ng c\u00f3 xu h\u01b0\u1edbng \u0103n m\u00f2n gi\u1eefa c\u00e1c h\u1ea1t c\u00f9ng v\u1edbi s\u1ef1 ph\u00e2n b\u1ed1 c\u1ee7a martensite. M\u1ed9t s\u1ed1 ranh gi\u1edbi h\u1ea1t m\u1edf r\u1ed9ng tr\u01b0\u1edbc v\u00e0 sau khi x\u1eed l\u00fd dung d\u1ecbch, v\u00e0 s\u1ef1 ph\u00e2n b\u1ed1 ranh gi\u1edbi h\u1ea1t m\u1edf r\u1ed9ng kh\u00f4ng ph\u1ee5 thu\u1ed9c v\u00e0o s\u1ef1 ph\u00e2n b\u1ed1 martensite. Tr\u00ean c\u01a1 s\u1edf ki\u1ec3m tra b\u1eb1ng k\u00ednh hi\u1ec3n vi sau khi th\u1eed \u0103n m\u00f2n, th\u1eed nghi\u1ec7m u\u1ed1n \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n \u0111\u1ed1i v\u1edbi c\u00e1c \u1ed1ng h\u00ecnh ch\u1eef u \u1edf c\u00e1c tr\u1ea1ng th\u00e1i kh\u00e1c nhau theo ti\u00eau chu\u1ea9n th\u1eed nghi\u1ec7m. Kh\u00f4ng t\u00ecm th\u1ea5y v\u1ebft n\u1ee9t \u0103n m\u00f2n gi\u1eefa c\u00e1c h\u1ea1t trong \u1ed1ng sau khi u\u1ed1n 180\u00b0.<\/p>\n
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Nhi\u1ec7t \u0111\u1ed9 x\u1eed l\u00fd dung d\u1ecbch<\/h3>\n
Hi\u1ec7u qu\u1ea3 c\u1ee7a vi\u1ec7c x\u1eed l\u00fd dung d\u1ecbch b\u1ecb \u1ea3nh h\u01b0\u1edfng b\u1edfi nhi\u1ec7t \u0111\u1ed9 dung d\u1ecbch th\u1ea5p v\u00e0 kh\u00f4ng th\u1ec3 thu \u0111\u01b0\u1ee3c k\u1ebft qu\u1ea3 v\u1ec1 c\u1ea5u tr\u00fac vi m\u00f4 v\u00e0 \u0111\u1ed9 c\u1ee9ng. N\u1ebfu nhi\u1ec7t \u0111\u1ed9 cao h\u01a1n m\u1ed9t ch\u00fat, c\u00e1c khuy\u1ebft t\u1eadt nh\u01b0 l\u00f5m ho\u1eb7c n\u1ee9t c\u00f3 th\u1ec3 xu\u1ea5t hi\u1ec7n b\u00ean trong \u0111o\u1ea1n h\u00ecnh ch\u1eef U.<\/p>\n
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T\u1eeb th\u00ed nghi\u1ec7m, ng\u01b0\u1eddi ta bi\u1ebft r\u1eb1ng s\u1ef1 bi\u1ebfn \u0111\u1ed5i martensite c\u1ee7a th\u00e9p kh\u00f4ng g\u1ec9 sau khi gia c\u00f4ng ngu\u1ed9i, \u1ea3nh h\u01b0\u1edfng c\u1ee7a kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n l\u1edbn h\u01a1n nhi\u1ec1u so v\u1edbi \u1ee9ng su\u1ea5t. Khi b\u00e1n k\u00ednh u\u1ed1n c\u1ee7a \u1ed1ng h\u00ecnh ch\u1eef u nh\u1ecf h\u01a1n 115mm, c\u1ea5u tr\u00fac vi m\u00f4 c\u1ee7a \u1ed1ng h\u00ecnh ch\u1eef u tr\u01b0\u1edbc v\u00e0 sau khi x\u1eed l\u00fd b\u1eb1ng dung d\u1ecbch s\u1ebd kh\u00e1c nhau \u0111\u00e1ng k\u1ec3. \u0110\u1ed1i v\u1edbi \u0111o\u1ea1n \u1ed1ng u\u1ed1n cong h\u00ecnh ch\u1eef U c\u00f3 b\u00e1n k\u00ednh nh\u1ecf n\u00e0y, vi\u1ec7c x\u1eed l\u00fd dung d\u1ecbch r\u1eafn ph\u1ea3i \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n sau khi t\u1ea1o h\u00ecnh ngu\u1ed9i. N\u1ebfu kh\u00f4ng c\u00f3 y\u00eau c\u1ea7u v\u1ec1 kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n gi\u1eefa c\u00e1c h\u1ea1t cao h\u01a1n th\u00ec n\u00ean x\u1eed l\u00fd ph\u1ea7n u\u1ed1n h\u00ecnh ch\u1eef u c\u00f3 b\u00e1n k\u00ednh u\u1ed1n nh\u1ecf h\u01a1n ho\u1eb7c b\u1eb1ng 265mm b\u1eb1ng x\u1eed l\u00fd dung d\u1ecbch (l\u01b0u \u00fd lo\u1ea1i b\u1ecf \u1ee9ng su\u1ea5t d\u01b0). \u0110\u1ed1i v\u1edbi c\u00e1c \u1ed1ng trao \u0111\u1ed5i nhi\u1ec7t h\u00ecnh ch\u1eef u c\u00f3 b\u00e1n k\u00ednh cong l\u1edbn, ph\u1ea7n u\u1ed1n c\u00f3 th\u1ec3 kh\u00f4ng \u0111\u01b0\u1ee3c x\u1eed l\u00fd b\u1eb1ng dung d\u1ecbch, ngo\u1ea1i tr\u1eeb m\u00f4i tr\u01b0\u1eddng nh\u1ea1y c\u1ea3m v\u1edbi \u0103n m\u00f2n do \u1ee9ng su\u1ea5t. B\u1edfi v\u00ec \u0111i\u1ec7n tr\u1edf ch\u1ea5t l\u1ecfng \u0111\u01b0\u1eddng k\u00ednh \u1ed1ng nh\u1ecf l\u1edbn n\u00ean b\u1ea5t ti\u1ec7n khi l\u00e0m s\u1ea1ch v\u00e0 d\u1ec5 l\u00e0m t\u1eafc ngh\u1ebdn c\u1ea5u tr\u00fac, v\u00e0 \u0111i\u1ec7n tr\u1edf ch\u1ea5t l\u1ecfng c\u1ee7a \u1ed1ng th\u00e9p kh\u00f4ng g\u1ec9 \u0111\u01b0\u1eddng k\u00ednh l\u1edbn kh\u00f4ng l\u1edbn b\u1eb1ng \u0111\u01b0\u1eddng k\u00ednh \u1ed1ng nh\u1ecf, d\u1ec5 l\u00e0m s\u1ea1ch, \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng nhi\u1ec1u h\u01a1n cho nh\u1edbt ho\u1eb7c ch\u1ea5t l\u1ecfng b\u1ea9n.<\/p>\n
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C\u00f4ng ty WLD c\u00f3 th\u1ec3 cung c\u1ea5p c\u00e1c lo\u1ea1i \u1ed1ng trao \u0111\u1ed5i nhi\u1ec7t inox 304\/316 t\u1eeb 10mm \u0111\u1ebfn 114mm, \u0111\u1ed9 d\u00e0y t\u1eeb 0,6mm \u0111\u1ebfn 3,0mm; \u0110\u1ed9 d\u00e0i c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c t\u00f9y ch\u1ec9nh theo \u0111i\u1ec1u ki\u1ec7n l\u00e0m vi\u1ec7c th\u1ef1c t\u1ebf c\u1ee7a b\u1ea1n. N\u1ebfu b\u1ea1n c\u1ea7n h\u00e3y li\u00ean h\u1ec7 v\u1edbi ch\u00fang t\u00f4i ngay h\u00f4m nay.<\/em><\/p>","protected":false},"excerpt":{"rendered":"Khi n\u00f3i v\u1ec1 vi\u1ec7c x\u1eed l\u00fd nhi\u1ec7t \u1ed1ng th\u00e9p kh\u00f4ng g\u1ec9 austenit h\u00ecnh ch\u1eef U, h\u1ea7u h\u1ebft m\u1ecdi ng\u01b0\u1eddi \u0111\u1ec1u cho r\u1eb1ng kh\u00f4ng c\u1ea7n thi\u1ebft v\u00ec \u0111\u1ed9 nh\u1ea1y v\u00e0 nhi\u1ec7t \u0111\u1ed9 x\u1eed l\u00fd dung d\u1ecbch cao n\u00ean d\u1ec5 g\u00e2y bi\u1ebfn d\u1ea1ng cho \u1ed1ng. Tr\u00ean th\u1ef1c t\u1ebf, vi\u1ec7c x\u1eed l\u00fd nhi\u1ec7t th\u00e9p kh\u00f4ng g\u1ec9 Austenitic l\u00e0 t\u1ea5t y\u1ebfu, x\u1eed l\u00fd nhi\u1ec7t kh\u00f4ng th\u1ec3 l\u00e0m thay \u0111\u1ed5i c\u1ea5u tr\u00fac c\u1ee7a th\u00e9p kh\u00f4ng g\u1ec9 [\u2026]<\/p>","protected":false},"author":1,"featured_media":2212,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[23],"tags":[],"class_list":["post-2211","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\/2211","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=2211"}],"version-history":[{"count":4,"href":"https:\/\/wldstainless.com\/vi\/wp-json\/wp\/v2\/posts\/2211\/revisions"}],"predecessor-version":[{"id":2216,"href":"https:\/\/wldstainless.com\/vi\/wp-json\/wp\/v2\/posts\/2211\/revisions\/2216"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/wldstainless.com\/vi\/wp-json\/wp\/v2\/media\/2212"}],"wp:attachment":[{"href":"https:\/\/wldstainless.com\/vi\/wp-json\/wp\/v2\/media?parent=2211"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/wldstainless.com\/vi\/wp-json\/wp\/v2\/categories?post=2211"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/wldstainless.com\/vi\/wp-json\/wp\/v2\/tags?post=2211"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}