{"id":750,"date":"2017-08-19T08:50:59","date_gmt":"2017-08-19T08:50:59","guid":{"rendered":"http:\/\/wldstainless.com\/?p=750"},"modified":"2020-09-15T07:58:02","modified_gmt":"2020-09-15T07:58:02","slug":"why-the-stainless-steel-pipe-need-solution-annealing","status":"publish","type":"post","link":"https:\/\/wldstainless.com\/vi\/why-the-stainless-steel-pipe-need-solution-annealing\/","title":{"rendered":"T\u1ea1i sao \u1ed1ng th\u00e9p kh\u00f4ng g\u1ec9 c\u1ea7n dung d\u1ecbch \u1ee7?"},"content":{"rendered":"<p>\u1ee6 dung d\u1ecbch c\u00f2n \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 \u1ee7 dung d\u1ecbch cacbua, l\u00e0 m\u1ed9t qu\u00e1 tr\u00ecnh l\u00e0m n\u00f3ng b\u1ed9 ph\u1eadn l\u00e0m vi\u1ec7c \u0111\u1ebfn 1010oC ho\u1eb7c cao h\u01a1n \u0111\u1ec3 lo\u1ea1i b\u1ecf k\u1ebft t\u1ee7a cacbua (Carbon t\u1eeb dung d\u1ecbch r\u1eafn b\u1eb1ng th\u00e9p kh\u00f4ng g\u1ec9), sau \u0111\u00f3 l\u00e0m ngu\u1ed9i nhanh, th\u01b0\u1eddng l\u00e0 l\u00e0m ngu\u1ed9i b\u1eb1ng n\u01b0\u1edbc v\u00e0 cacbua tr\u1edf l\u1ea1i dung d\u1ecbch r\u1eafn th\u00e9p kh\u00f4ng g\u1ec9. X\u1eed l\u00fd \u1ee7 dung d\u1ecbch c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng cho th\u00e9p h\u1ee3p kim v\u00e0 th\u00e9p kh\u00f4ng g\u1ec9. V\u00ec <a href=\"https:\/\/wldstainless.com\/materials\/austenitic-stainless-steel\/304-304l-stainless-steel\/\"><em>th\u00e9p kh\u00f4ng g\u1ec9 304<\/em> <\/a>\u0111\u00fac, x\u1eed l\u00fd dung d\u1ecbch c\u00f3 th\u1ec3 t\u1ea1o ra c\u1ea5u tr\u00fac vi m\u00f4 \u0111\u1ed3ng nh\u1ea5t m\u00e0 kh\u00f4ng c\u00f3 t\u1ea1p ch\u1ea5t cacbua. N\u00f3i chung, \u1ed1ng th\u00e9p kh\u00f4ng g\u1ec9 \u0111\u01b0\u1ee3c nung n\u00f3ng \u0111\u1ebfn kho\u1ea3ng 950 ~ 1150oC trong m\u1ed9t th\u1eddi gian d\u00e0i \u0111\u1ec3 l\u00e0m cho cacbua v\u00e0 c\u00e1c nguy\u00ean t\u1ed1 h\u1ee3p kim kh\u00e1c nhau h\u00f2a tan ho\u00e0n to\u00e0n v\u00e0 \u0111\u1ed3ng \u0111\u1ec1u trong Austenite, sau \u0111\u00f3 nhanh ch\u00f3ng l\u00e0m ngu\u1ed9i b\u1eb1ng n\u01b0\u1edbc \u0111\u1ec3 thu \u0111\u01b0\u1ee3c c\u1ea5u tr\u00fac Austenite tinh khi\u1ebft do carbon v\u00e0 c\u00e1c h\u1ee3p kim kh\u00e1c c\u00e1c y\u1ebfu t\u1ed1 d\u1eabn \u0111\u1ebfn l\u01b0\u1ee3ng m\u01b0a mu\u1ed9n. \u0110\u1eb7t ra c\u00e2u h\u1ecfi t\u1ea1i sao \u1ed1ng inox l\u1ea1i c\u1ea7n \u1ee7 dung d\u1ecbch? \u0110\u1ea7u ti\u00ean b\u1ea1n n\u00ean bi\u1ebft ch\u1ee9c n\u0103ng c\u1ee7a qu\u00e1 tr\u00ecnh \u1ee7 dung d\u1ecbch.<\/p>\n<p><img decoding=\"async\" class=\"size-full wp-image-1763 aligncenter\" src=\"https:\/\/wldstainless.com\/wp-content\/uploads\/2017\/08\/Solid-solution-heat-treatment-furnace.jpg\" alt=\"\" width=\"500\" height=\"322\" srcset=\"https:\/\/wldstainless.com\/wp-content\/uploads\/2017\/08\/Solid-solution-heat-treatment-furnace.jpg 500w, https:\/\/wldstainless.com\/wp-content\/uploads\/2017\/08\/Solid-solution-heat-treatment-furnace-300x193.jpg 300w, https:\/\/wldstainless.com\/wp-content\/uploads\/2017\/08\/Solid-solution-heat-treatment-furnace-450x290.jpg 450w\" sizes=\"(max-width: 500px) 100vw, 500px\" \/><\/p>\n<p><strong>C\u1ea5u tr\u00fac kim lo\u1ea1i \u0111\u1ed3ng nh\u1ea5t<\/strong><\/p>\n<p>\u0110i\u1ec1u n\u00e0y \u0111\u1eb7c bi\u1ec7t quan tr\u1ecdng \u0111\u1ed1i v\u1edbi nguy\u00ean li\u1ec7u th\u00f4. S\u1ef1 kh\u00f4ng nh\u1ea5t qu\u00e1n v\u1ec1 nhi\u1ec7t \u0111\u1ed9 c\u00e1n v\u00e0 t\u1ed1c \u0111\u1ed9 l\u00e0m ngu\u1ed9i c\u1ee7a \u1ed1ng th\u00e9p c\u00e1n n\u00f3ng g\u00e2y ra h\u1eadu qu\u1ea3 t\u01b0\u01a1ng t\u1ef1 trong k\u1ebft c\u1ea5u. Khi ho\u1ea1t \u0111\u1ed9ng nguy\u00ean t\u1eed t\u0103ng \u1edf nhi\u1ec7t \u0111\u1ed9 cao, \u03c3 h\u00f2a tan v\u00e0 th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc c\u00f3 xu h\u01b0\u1edbng \u0111\u1ed3ng nh\u1ea5t, th\u00ec thu \u0111\u01b0\u1ee3c c\u1ea5u tr\u00fac m\u1ed9t pha \u0111\u1ed3ng nh\u1ea5t sau khi l\u00e0m l\u1ea1nh nhanh.<\/p>\n<p>&nbsp;<\/p>\n<p><strong>Lo\u1ea1i b\u1ecf s\u1ef1 c\u1ee9ng h\u00f3a c\u00f4ng vi\u1ec7c<\/strong><\/p>\n<p>Vi\u1ec7c x\u1eed l\u00fd b\u1eb1ng dung d\u1ecbch r\u1eafn s\u1ebd ph\u1ee5c h\u1ed3i m\u1ea1ng xo\u1eafn v\u00e0 k\u1ebft tinh l\u1ea1i h\u1ea1t b\u1ecb v\u1ee1. \u1ee8ng su\u1ea5t b\u00ean trong v\u00e0 \u0111\u1ed9 b\u1ec1n k\u00e9o c\u1ee7a \u1ed1ng th\u00e9p gi\u1ea3m trong khi t\u1ed1c \u0111\u1ed9 gi\u00e3n d\u00e0i t\u0103ng \u0111\u1ec3 t\u1ea1o \u0111i\u1ec1u ki\u1ec7n cho qu\u00e1 tr\u00ecnh gia c\u00f4ng ngu\u1ed9i li\u00ean t\u1ee5c.<\/p>\n<p>&nbsp;<\/p>\n<p><strong>T\u0103ng kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n<\/strong><\/p>\n<p>Kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n c\u1ee7a th\u00e9p kh\u00f4ng g\u1ec9 gi\u1ea3m khi k\u1ebft t\u1ee7a cacbua v\u00e0 kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n c\u1ee7a \u1ed1ng th\u00e9p tr\u1edf l\u1ea1i t\u1ed1t nh\u1ea5t sau khi x\u1eed l\u00fd b\u1eb1ng dung d\u1ecbch r\u1eafn. Nhi\u1ec7t \u0111\u1ed9, th\u1eddi gian gi\u1eef v\u00e0 t\u1ed1c \u0111\u1ed9 l\u00e0m ngu\u1ed9i l\u00e0 nh\u1eefng y\u1ebfu t\u1ed1 quan tr\u1ecdng nh\u1ea5t trong x\u1eed l\u00fd dung d\u1ecbch cho th\u00e9p kh\u00f4ng g\u1ec9.<\/p>\n<p>Nhi\u1ec7t \u0111\u1ed9 dung d\u1ecbch r\u1eafn ph\u1ee5 thu\u1ed9c v\u00e0o th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc. N\u00f3i chung, nhi\u1ec7t \u0111\u1ed9 dung d\u1ecbch r\u1eafn ph\u1ea3i \u0111\u01b0\u1ee3c t\u0103ng t\u01b0\u01a1ng \u1ee9ng \u0111\u1ed1i v\u1edbi lo\u1ea1i c\u00f3 nhi\u1ec1u nguy\u00ean t\u1ed1 h\u1ee3p kim h\u01a1n v\u00e0 h\u00e0m l\u01b0\u1ee3ng cao, \u0111\u1eb7c bi\u1ec7t \u0111\u1ed1i v\u1edbi th\u00e9p c\u00f3 h\u00e0m l\u01b0\u1ee3ng mangan, molypden, niken v\u00e0 silicon cao. Ch\u1ec9 b\u1eb1ng c\u00e1ch t\u0103ng nhi\u1ec7t \u0111\u1ed9 dung d\u1ecbch r\u1eafn v\u00e0 l\u00e0m cho n\u00f3 h\u00f2a tan ho\u00e0n to\u00e0n m\u1edbi c\u00f3 th\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c hi\u1ec7u qu\u1ea3 l\u00e0m m\u1ec1m.<\/p>\n<p>Tuy nhi\u00ean, c\u00f3 m\u1ed9t s\u1ed1 tr\u01b0\u1eddng h\u1ee3p ngo\u1ea1i l\u1ec7, ch\u1eb3ng h\u1ea1n nh\u01b0 316Ti. Khi nhi\u1ec7t \u0111\u1ed9 dung d\u1ecbch r\u1eafn cao, cacbua c\u1ee7a c\u00e1c nguy\u00ean t\u1ed1 \u1ed5n \u0111\u1ecbnh h\u00f2a tan ho\u00e0n to\u00e0n trong Austenite, ch\u1ea5t n\u00e0y s\u1ebd k\u1ebft t\u1ee7a \u1edf ranh gi\u1edbi h\u1ea1t d\u01b0\u1edbi d\u1ea1ng Cr23C6 v\u00e0 g\u00e2y ra s\u1ef1 \u0103n m\u00f2n gi\u1eefa c\u00e1c h\u1ea1t trong qu\u00e1 tr\u00ecnh l\u00e0m ngu\u1ed9i ti\u1ebfp theo. Nhi\u1ec7t \u0111\u1ed9 dung d\u1ecbch r\u1eafn th\u1ea5p h\u01a1n \u0111\u01b0\u1ee3c khuy\u1ebfn ngh\u1ecb \u0111\u1ec3 ng\u0103n cacbua (TiC v\u00e0 Nbc) c\u1ee7a c\u00e1c nguy\u00ean t\u1ed1 \u1ed5n \u0111\u1ecbnh kh\u1ecfi s\u1ef1 ph\u00e2n h\u1ee7y v\u00e0 dung d\u1ecbch r\u1eafn.<\/p>\n<p>&nbsp;<\/p>","protected":false},"excerpt":{"rendered":"<p>\u1ee6 dung d\u1ecbch c\u00f2n \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 \u1ee7 dung d\u1ecbch cacbua, l\u00e0 m\u1ed9t qu\u00e1 tr\u00ecnh l\u00e0m n\u00f3ng b\u1ed9 ph\u1eadn l\u00e0m vi\u1ec7c \u0111\u1ebfn 1010oC ho\u1eb7c cao h\u01a1n \u0111\u1ec3 lo\u1ea1i b\u1ecf k\u1ebft t\u1ee7a cacbua (Carbon t\u1eeb dung d\u1ecbch r\u1eafn b\u1eb1ng th\u00e9p kh\u00f4ng g\u1ec9), sau \u0111\u00f3 l\u00e0m ngu\u1ed9i nhanh, th\u01b0\u1eddng l\u00e0 l\u00e0m ngu\u1ed9i b\u1eb1ng n\u01b0\u1edbc v\u00e0 cacbua tr\u1edf l\u1ea1i dung d\u1ecbch r\u1eafn th\u00e9p kh\u00f4ng g\u1ec9. Gi\u1ea3i ph\u00e1p \u1ee7 x\u1eed l\u00fd [\u2026]<\/p>","protected":false},"author":1,"featured_media":929,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[23],"tags":[],"class_list":["post-750","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\/750","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=750"}],"version-history":[{"count":8,"href":"https:\/\/wldstainless.com\/vi\/wp-json\/wp\/v2\/posts\/750\/revisions"}],"predecessor-version":[{"id":1764,"href":"https:\/\/wldstainless.com\/vi\/wp-json\/wp\/v2\/posts\/750\/revisions\/1764"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/wldstainless.com\/vi\/wp-json\/wp\/v2\/media\/929"}],"wp:attachment":[{"href":"https:\/\/wldstainless.com\/vi\/wp-json\/wp\/v2\/media?parent=750"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/wldstainless.com\/vi\/wp-json\/wp\/v2\/categories?post=750"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/wldstainless.com\/vi\/wp-json\/wp\/v2\/tags?post=750"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}