{"id":1902,"date":"2026-04-14T00:33:53","date_gmt":"2026-04-13T17:33:53","guid":{"rendered":"https:\/\/inoxcuongthinh.com\/phan-biet-va-kiem-dinh-inox-phuong-phap-chuan-tranh-sai-lam\/"},"modified":"2026-04-19T00:37:05","modified_gmt":"2026-04-18T17:37:05","slug":"phan-biet-va-kiem-dinh-inox-phuong-phap-chuan-tranh-sai-lam","status":"publish","type":"post","link":"https:\/\/inoxcuongthinh.com\/phan-biet-va-kiem-dinh-inox-phuong-phap-chuan-tranh-sai-lam\/","title":{"rendered":"Ph\u00e2n bi\u1ec7t v\u00e0 ki\u1ec3m \u0111\u1ecbnh Inox: ph\u01b0\u01a1ng ph\u00e1p chu\u1ea9n, tr\u00e1nh sai l\u1ea7m"},"content":{"rendered":"<div style=\"padding: 15px; border-left: 4px solid #0073aa; background-color: #f7f7f7; margin: 20px 0;\">\n<p style=\"margin: 0;\"><strong>\u27a1\ufe0f B\u00e0i vi\u1ebft chuy\u00ean s\u00e2u:<\/strong> <a href=\"https:\/\/inoxcuongthinh.com\/inox-loai-1-vs-loai-2-tai-che-cach-nhan-biet-rui-ro-chi-tiet\/\" target=\"_blank\" rel=\"noopener noreferrer\">Inox lo\u1ea1i 1 vs lo\u1ea1i 2 (t\u00e1i ch\u1ebf): C\u00e1ch nh\u1eadn bi\u1ebft &#038; r\u1ee7i ro chi ti\u1ebft<\/a><\/p>\n<\/p><\/div>\n<div style=\"padding: 15px; border-left: 4px solid #0073aa; background-color: #f7f7f7; margin: 20px 0;\">\n<p style=\"margin: 0;\"><strong>\u27a1\ufe0f B\u00e0i vi\u1ebft chuy\u00ean s\u00e2u:<\/strong> <a href=\"https:\/\/inoxcuongthinh.com\/checklist-10-buoc-kiem-tra-chat-luong-inox-truoc-khi-nhap-kho-2\/\" target=\"_blank\" rel=\"noopener noreferrer\">Checklist 10 b\u01b0\u1edbc ki\u1ec3m tra ch\u1ea5t l\u01b0\u1ee3ng inox tr\u01b0\u1edbc khi nh\u1eadp kho<\/a><\/p>\n<\/p>\n<\/div>\n<div style=\"padding: 15px; border-left: 4px solid #0073aa; background-color: #f7f7f7; margin: 20px 0;\">\n<p style=\"margin: 0;\"><strong>\u27a1\ufe0f B\u00e0i vi\u1ebft chuy\u00ean s\u00e2u:<\/strong> <a href=\"https:\/\/inoxcuongthinh.com\/kiem-dinh-inox-bang-quang-pho-quy-trinh-tieu-chuan-do-chinh-xac\/\" target=\"_blank\" rel=\"noopener noreferrer\">Ki\u1ec3m \u0111\u1ecbnh inox b\u1eb1ng quang ph\u1ed5: quy tr\u00ecnh, ti\u00eau chu\u1ea9n, \u0111\u1ed9 ch\u00ednh x\u00e1c<\/a><\/p>\n<\/p>\n<\/div>\n<div style=\"padding: 15px; border-left: 4px solid #0073aa; background-color: #f7f7f7; margin: 20px 0;\">\n<p style=\"margin: 0;\"><strong>\u27a1\ufe0f B\u00e0i vi\u1ebft chuy\u00ean s\u00e2u:<\/strong> <a href=\"https:\/\/inoxcuongthinh.com\/cach-xac-minh-tinh-xac-thuc-co-cq-inox-quy-trinh-checklist-va-dau-hieu-nhan-biet\/\" target=\"_blank\" rel=\"noopener noreferrer\">C\u00e1ch x\u00e1c minh t\u00ednh x\u00e1c th\u1ef1c CO, CQ inox: quy tr\u00ecnh, checklist v\u00e0 d\u1ea5u hi\u1ec7u nh\u1eadn bi\u1ebft<\/a><\/p>\n<\/p>\n<\/div>\n<div style=\"padding: 15px; border-left: 4px solid #0073aa; background-color: #f7f7f7; margin: 20px 0;\">\n<p style=\"margin: 0;\"><strong>\u27a1\ufe0f B\u00e0i vi\u1ebft chuy\u00ean s\u00e2u:<\/strong> <a href=\"https:\/\/inoxcuongthinh.com\/chieu-tro-gia-inox-304-cach-nhan-biet-va-phong-tranh-hieu-qua\/\" target=\"_blank\" rel=\"noopener noreferrer\">Chi\u00eau tr\u00f2 gi\u1ea3 Inox 304: c\u00e1ch nh\u1eadn bi\u1ebft v\u00e0 ph\u00f2ng tr\u00e1nh hi\u1ec7u qu\u1ea3<\/a><\/p>\n<\/p>\n<\/div>\n<div style=\"padding: 15px; border-left: 4px solid #0073aa; background-color: #f7f7f7; margin: 20px 0;\">\n<p style=\"margin: 0;\"><strong>\u27a1\ufe0f B\u00e0i vi\u1ebft chuy\u00ean s\u00e2u:<\/strong> <a href=\"https:\/\/inoxcuongthinh.com\/do-trong-luong-rieng-de-kiem-tra-chat-luong-va-thanh-phan-inox\/\" target=\"_blank\" rel=\"noopener noreferrer\">\u0110o tr\u1ecdng l\u01b0\u1ee3ng ri\u00eang \u0111\u1ec3 ki\u1ec3m tra ch\u1ea5t l\u01b0\u1ee3ng v\u00e0 th\u00e0nh ph\u1ea7n Inox<\/a><\/p>\n<\/p>\n<\/div>\n<div style=\"padding: 15px; border-left: 4px solid #0073aa; background-color: #f7f7f7; margin: 20px 0;\">\n<p style=\"margin: 0;\"><strong>\u27a1\ufe0f B\u00e0i vi\u1ebft chuy\u00ean s\u00e2u:<\/strong> <a href=\"https:\/\/inoxcuongthinh.com\/phan-biet-inox-200-300-400-qua-tia-lua-mai-huong-dan-thuc-hanh\/\" target=\"_blank\" rel=\"noopener noreferrer\">Ph\u00e2n bi\u1ec7t inox 200\/300\/400 qua tia l\u1eeda m\u00e0i: h\u01b0\u1edbng d\u1eabn th\u1ef1c h\u00e0nh<\/a><\/p>\n<\/p>\n<\/div>\n<div style=\"padding: 15px; border-left: 4px solid #0073aa; background-color: #f7f7f7; margin: 20px 0;\">\n<p style=\"margin: 0;\"><strong>\u27a1\ufe0f B\u00e0i vi\u1ebft chuy\u00ean s\u00e2u:<\/strong> <a href=\"https:\/\/inoxcuongthinh.com\/huong-dan-dung-axit-va-thuoc-thu-chuyen-dung-de-phan-biet-inox-304-va-201\/\" target=\"_blank\" rel=\"noopener noreferrer\">H\u01b0\u1edbng d\u1eabn d\u00f9ng axit v\u00e0 thu\u1ed1c th\u1eed chuy\u00ean d\u1ee5ng \u0111\u1ec3 ph\u00e2n bi\u1ec7t Inox 304 v\u00e0 201<\/a><\/p>\n<\/p>\n<\/div>\n<div style=\"padding: 15px; border-left: 4px solid #0073aa; background-color: #f7f7f7; margin: 20px 0;\">\n<p style=\"margin: 0;\"><strong>\u27a1\ufe0f B\u00e0i vi\u1ebft chuy\u00ean s\u00e2u:<\/strong> <a href=\"https:\/\/inoxcuongthinh.com\/thu-nam-cham-phan-biet-inox-304-316-201-khi-dung-khi-sai\/\" target=\"_blank\" rel=\"noopener noreferrer\">Th\u1eed nam ch\u00e2m ph\u00e2n bi\u1ec7t inox 304, 316, 201: khi \u0111\u00fang, khi sai<\/a><\/p>\n<\/p>\n<\/div>\n<div style=\"padding: 15px; border-left: 4px solid #0073aa; background-color: #f7f7f7; margin: 20px 0;\">\n<p style=\"margin: 0;\"><strong>\u27a1\ufe0f B\u00e0i vi\u1ebft chuy\u00ean s\u00e2u:<\/strong> <a href=\"https:\/\/inoxcuongthinh.com\/phan-biet-inox-201-304-316-430-bang-mat-do-bong-mau-be-mat\/\" target=\"_blank\" rel=\"noopener noreferrer\">Ph\u00e2n bi\u1ec7t inox 201\/304\/316\/430 b\u1eb1ng m\u1eaft: \u0111\u1ed9 b\u00f3ng, m\u00e0u, b\u1ec1 m\u1eb7t<\/a><\/p>\n<\/p>\n<\/div>\n<div class=\"custom-toc\">\n<h3>N\u1ed9i dung ch\u00ednh<\/h3>\n<ul>\n<li><a href=\"#toc-0-huong-dan-toan-dien-giup-ban-mua-va-kiem-dinh-inox\">H\u01b0\u1edbng d\u1eabn to\u00e0n di\u1ec7n gi\u00fap b\u1ea1n mua v\u00e0 ki\u1ec3m \u0111\u1ecbnh Inox \u0111\u00fang chu\u1ea9n, kh\u00f4ng r\u1ee7i ro<\/a><\/li>\n<li><a href=\"#toc-1-nen-tang-inox-la-gi-va-vi-sao-can-kiem-dinh-nghiem\">N\u1ec1n t\u1ea3ng: Inox l\u00e0 g\u00ec v\u00e0 v\u00ec sao c\u1ea7n ki\u1ec3m \u0111\u1ecbnh nghi\u00eam ng\u1eb7t?<\/a><\/li>\n<li><a href=\"#toc-2-nhung-khia-canh-cot-loi-khi-phan-biet-va-kiem-dinh\">Nh\u1eefng kh\u00eda c\u1ea1nh c\u1ed1t l\u00f5i khi ph\u00e2n bi\u1ec7t v\u00e0 ki\u1ec3m \u0111\u1ecbnh Inox<\/a><\/li>\n<li><a href=\"#toc-3-dao-sau-theo-chu-de-phuong-phap-thuc-chien-va-phon\">\u0110\u00e0o s\u00e2u theo ch\u1ee7 \u0111\u1ec1: ph\u01b0\u01a1ng ph\u00e1p th\u1ef1c chi\u1ebfn v\u00e0 ph\u00f2ng tr\u00e1nh r\u1ee7i ro<\/a><\/li>\n<li><a href=\"#toc-4-ung-dung-thuc-te-va-khuyen-nghi-tu-chuyen-gia\">\u1ee8ng d\u1ee5ng th\u1ef1c t\u1ebf v\u00e0 khuy\u1ebfn ngh\u1ecb t\u1eeb chuy\u00ean gia<\/a><\/li>\n<li><a href=\"#toc-5-ket-luan-va-loi-keu-goi-hanh-dong\">K\u1ebft lu\u1eadn v\u00e0 l\u1eddi k\u00eau g\u1ecdi h\u00e0nh \u0111\u1ed9ng<\/a><\/li>\n<\/ul>\n<\/div>\n<h2 id=\"toc-0-huong-dan-toan-dien-giup-ban-mua-va-kiem-dinh-inox\">H\u01b0\u1edbng d\u1eabn to\u00e0n di\u1ec7n gi\u00fap b\u1ea1n mua v\u00e0 ki\u1ec3m \u0111\u1ecbnh Inox \u0111\u00fang chu\u1ea9n, kh\u00f4ng r\u1ee7i ro<\/h2>\n<p>Trong th\u1ecb tr\u01b0\u1eddng Inox nhi\u1ec1u bi\u1ebfn \u0111\u1ed9ng, sai m\u1ed9t ly \u0111i m\u1ed9t d\u1eb7m: ch\u1ecdn nh\u1ea7m m\u00e1c th\u00e9p, mua ph\u1ea3i h\u00e0ng gi\u1ea3 304, hay nh\u1eadn cu\u1ed9n thi\u1ebfu chi\u1ec1u d\u00e0y \u0111\u1ec1u c\u00f3 th\u1ec3 g\u00e2y n\u1ee9t h\u00e0n, r\u1ed7 b\u1ec1 m\u1eb7t, h\u1ecfng thi\u1ebft b\u1ecb, th\u1eadm ch\u00ed d\u1eebng d\u00e2y chuy\u1ec1n. K\u1ef9 s\u01b0, nh\u00e0 th\u1ea7u v\u00e0 ch\u1ee7 x\u01b0\u1edfng c\u1ea7n m\u1ed9t quy tr\u00ecnh ph\u00e2n bi\u1ec7t v\u00e0 ki\u1ec3m \u0111\u1ecbnh c\u00f3 th\u1ec3 tri\u1ec3n khai ngay t\u1ea1i kho\/x\u01b0\u1edfng, \u0111\u1ed3ng th\u1eddi bi\u1ebft khi n\u00e0o c\u1ea7n \u0111\u01b0a m\u1eabu v\u00e0o ph\u00f2ng lab \u0111\u1ec3 ch\u1eafc ch\u1eafn 100%. B\u00e0i vi\u1ebft n\u00e0y cung c\u1ea5p h\u01b0\u1edbng d\u1eabn th\u1ef1c chi\u1ebfn: c\u00e1ch nh\u1eadn bi\u1ebft b\u1eb1ng m\u1eaft, th\u1eed nam ch\u00e2m, d\u00f9ng thu\u1ed1c th\u1eed\/axit, ph\u00e2n t\u00edch tia l\u1eeda, \u0111o tr\u1ecdng l\u01b0\u1ee3ng ri\u00eang\u2026 \u0111\u1ebfn ki\u1ec3m \u0111\u1ecbnh chuy\u00ean nghi\u1ec7p b\u1eb1ng quang ph\u1ed5 v\u00e0 x\u00e1c minh CO\/CQ. B\u1ea1n s\u1ebd c\u00f3 checklist 10 b\u01b0\u1edbc tr\u01b0\u1edbc khi nh\u1eadp kho, hi\u1ec3u r\u00f5 c\u00e1c chi\u00eau tr\u00f2 l\u00e0m gi\u1ea3 ph\u1ed5 bi\u1ebfn v\u00e0 c\u00e1ch ph\u00f2ng tr\u00e1nh. M\u1ee5c ti\u00eau l\u00e0 gi\u00fap \u0111\u1ed9i ng\u0169 c\u1ee7a b\u1ea1n t\u1ef1 tin \u0111\u00e1nh gi\u00e1 ch\u1ea5t l\u01b0\u1ee3ng Inox, t\u1ed1i \u01b0u chi ph\u00ed v\u00e0 gi\u1ea3m thi\u1ec3u r\u1ee7i ro k\u1ef9 thu\u1eadt l\u1eabn ph\u00e1p l\u00fd khi tri\u1ec3n khai d\u1ef1 \u00e1n t\u1ea1i H\u00e0 N\u1ed9i v\u00e0 c\u00e1c t\u1ec9nh.<\/p>\n<h2 id=\"toc-1-nen-tang-inox-la-gi-va-vi-sao-can-kiem-dinh-nghiem\">N\u1ec1n t\u1ea3ng: Inox l\u00e0 g\u00ec v\u00e0 v\u00ec sao c\u1ea7n ki\u1ec3m \u0111\u1ecbnh nghi\u00eam ng\u1eb7t?<\/h2>\n<p>Inox (th\u00e9p kh\u00f4ng g\u1ec9) l\u00e0 h\u1ee3p kim s\u1eaft ch\u1ee9a t\u1ed1i thi\u1ec3u kho\u1ea3ng 10,5% Cr, h\u00ecnh th\u00e0nh l\u1edbp m\u00e0ng th\u1ee5 \u0111\u1ed9ng gi\u00fap ch\u1ed1ng \u0103n m\u00f2n. C\u00e1c h\u1ecd ch\u00ednh:<br \/>\n&#8211; Austenitic (v\u00ed d\u1ee5 201, 304, 316): th\u01b0\u1eddng kh\u00f4ng nhi\u1ec5m t\u1eeb, d\u1ec5 gia c\u00f4ng, d\u00f9ng r\u1ed9ng r\u00e3i trong th\u1ef1c ph\u1ea9m, y t\u1ebf, ki\u1ebfn tr\u00fac.<br \/>\n&#8211; Ferritic (v\u00ed d\u1ee5 430): nhi\u1ec5m t\u1eeb, chi ph\u00ed th\u1ea5p, ch\u1ed1ng r\u1ec9 v\u1eeba ph\u1ea3i, h\u1ee3p d\u1ee5ng n\u1ed9i th\u1ea5t, trang tr\u00ed trong nh\u00e0.<br \/>\n&#8211; Martensitic (v\u00ed d\u1ee5 410): c\u00f3 th\u1ec3 t\u00f4i c\u1ee9ng, d\u00f9ng cho dao c\u1ee5, chi ti\u1ebft ch\u1ecbu m\u00e0i m\u00f2n.<br \/>\n&#8211; Duplex: k\u1ebft h\u1ee3p austenitic + ferritic, ch\u1ed1ng \u0103n m\u00f2n khe\/k\u1ebd t\u1ed1t, cho m\u00f4i tr\u01b0\u1eddng kh\u1eafc nghi\u1ec7t.<\/p>\n<p>V\u00ec sao ph\u1ea3i ki\u1ec3m \u0111\u1ecbnh? Th\u1ee9 nh\u1ea5t, b\u1ea3o \u0111\u1ea3m ph\u00f9 h\u1ee3p thi\u1ebft k\u1ebf v\u00e0 ti\u00eau chu\u1ea9n (ASTM A240\/A554\/A312; JIS G4304\/G4305; EN 10088). Th\u1ee9 hai, ph\u00f2ng ng\u1eeba thay th\u1ebf m\u00e1c (v\u00ed d\u1ee5 201 gi\u1ea3 304) ho\u1eb7c gian l\u1eadn b\u1ec1 d\u00e0y\/tr\u1ecdng l\u01b0\u1ee3ng. Th\u1ee9 ba, truy xu\u1ea5t ngu\u1ed3n g\u1ed1c (heat number, MTC) \u0111\u1ec3 x\u1eed l\u00fd khi ph\u00e1t sinh s\u1ef1 c\u1ed1. Ki\u1ec3m \u0111\u1ecbnh \u0111\u00fang gi\u00fap k\u00e9o d\u00e0i tu\u1ed5i th\u1ecd thi\u1ebft b\u1ecb, gi\u1ea3m chi ph\u00ed b\u1ea3o tr\u00ec, tr\u00e1nh r\u1ee7i ro an to\u00e0n v\u00e0 ph\u00e1p l\u00fd h\u1ee3p \u0111\u1ed3ng.<\/p>\n<h2 id=\"toc-2-nhung-khia-canh-cot-loi-khi-phan-biet-va-kiem-dinh\">Nh\u1eefng kh\u00eda c\u1ea1nh c\u1ed1t l\u00f5i khi ph\u00e2n bi\u1ec7t v\u00e0 ki\u1ec3m \u0111\u1ecbnh Inox<\/h2>\n<h3>1) Th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc v\u00e0 m\u00e1c th\u00e9p<\/h3>\n<p>M\u1ed7i m\u00e1c c\u00f3 d\u1ea3i th\u00e0nh ph\u1ea7n \u0111i\u1ec3n h\u00ecnh. V\u00ed d\u1ee5:<br \/>\n&#8211; 304: Cr ~18\u201320%, Ni ~8\u201310.5% \u2013 \u0111a d\u1ee5ng, ch\u1ed1ng \u0103n m\u00f2n t\u1ed1t.<br \/>\n&#8211; 201: Cr ~16\u201318%, Ni ~3.5\u20135.5%, Mn cao \u2013 kinh t\u1ebf h\u01a1n, ch\u1ed1ng r\u1ec9 k\u00e9m h\u01a1n 304.<br \/>\n&#8211; 430: Cr ~16\u201318%, h\u1ea7u nh\u01b0 kh\u00f4ng c\u00f3 Ni \u2013 nhi\u1ec5m t\u1eeb, d\u00f9ng trong nh\u00e0.<br \/>\n&#8211; 316: c\u00f3 Mo ~2\u20133% \u2013 ch\u1ed1ng r\u1ed7 pitting t\u1ed1t h\u01a1n trong m\u00f4i tr\u01b0\u1eddng chloride.<br \/>\nNh\u1eadn \u0111\u00fang m\u00e1c quy\u1ebft \u0111\u1ecbnh kh\u1ea3 n\u0103ng ch\u1ecbu \u0103n m\u00f2n, h\u00e0n v\u00e0 gia c\u00f4ng.<\/p>\n<h3>2) C\u1ea5u tr\u00fac vi kim lo\u1ea1i v\u00e0 t\u00ednh t\u1eeb<\/h3>\n<p>Austenitic th\u01b0\u1eddng kh\u00f4ng nhi\u1ec5m t\u1eeb, nh\u01b0ng c\u00f3 th\u1ec3 nhi\u1ec5m t\u1eeb nh\u1eb9 sau c\u00e1n ngu\u1ed9i\/h\u00e0n. Ferritic\/martensitic nhi\u1ec5m t\u1eeb r\u00f5 r\u1ec7t. L\u01b0u \u00fd: t\u1eeb t\u00ednh kh\u00f4ng ph\u1ea3i \u201cch\u00eca kh\u00f3a v\u1ea1n n\u0103ng\u201d \u0111\u1ec3 k\u1ebft lu\u1eadn m\u00e1c, ch\u1ec9 l\u00e0 d\u1ea5u hi\u1ec7u h\u1ed7 tr\u1ee3.<\/p>\n<h3>3) T\u00ecnh tr\u1ea1ng b\u1ec1 m\u1eb7t v\u00e0 ho\u00e0n thi\u1ec7n<\/h3>\n<p>B\u1ec1 m\u1eb7t ph\u1ed5 bi\u1ebfn: No.1 (c\u00e1n n\u00f3ng), 2B (c\u00e1n ngu\u1ed9i m\u1edd), BA (b\u00f3ng s\u00e1ng), No.4\/Hairline (x\u01b0\u1edbc m\u1edd), 8K (g\u01b0\u01a1ng). L\u1ed7i c\u1ea7n ch\u00fa \u00fd: r\u1ed7, r\u1ea1n l\u1edbp th\u1ee5 \u0111\u1ed9ng, v\u1ebft oxi h\u00f3a sau h\u00e0n, v\u1ebft c\u00e1n, v\u1ebft d\u1ea7u\/axit che khuy\u1ebft \u0111i\u1ec3m. B\u1ec1 m\u1eb7t \u0111\u1eb9p kh\u00f4ng \u0111\u1ed3ng ngh\u0129a v\u1edbi \u0111\u00fang m\u00e1c.<\/p>\n<h3>4) Ch\u1ee9ng ch\u1ec9 v\u00e0 truy xu\u1ea5t<\/h3>\n<p>CO (Certificate of Origin), CQ\/MTC (Mill Test Certificate) ph\u1ea3i kh\u1edbp: m\u00e1c, k\u00edch th\u01b0\u1edbc, ti\u00eau chu\u1ea9n, heat number, c\u01a1 t\u00ednh (YS\/UTS\/El), th\u00e0nh ph\u1ea7n. Thi\u1ebfu truy xu\u1ea5t = r\u1ee7i ro l\u1edbn v\u1ec1 k\u1ef9 thu\u1eadt v\u00e0 nghi\u1ec7m thu.<\/p>\n<h3>5) Ph\u01b0\u01a1ng ph\u00e1p ki\u1ec3m tra v\u00e0 thi\u1ebft b\u1ecb<\/h3>\n<p>T\u1ea1i x\u01b0\u1edfng: soi b\u1ec1 m\u1eb7t, th\u01b0\u1edbc c\u1eb7p\/micrometer, c\u00e2n, th\u01b0\u1edbc th\u00e9p; th\u1eed nam ch\u00e2m; th\u1eed \u0111i\u1ec3m b\u1eb1ng thu\u1ed1c th\u1eed Ni\/Mo; m\u00e0i tia l\u1eeda; \u0111o \u0111\u1ed9 c\u1ee9ng. Chuy\u00ean s\u00e2u: PMI XRF c\u1ea7m tay, OES quang ph\u00e1t x\u1ea1 (ph\u00e2n bi\u1ec7t 304\/304L nh\u1edd h\u00e0m l\u01b0\u1ee3ng C), ICP cho ph\u00e2n t\u00edch \u0111\u1ecbnh l\u01b0\u1ee3ng ch\u00ednh x\u00e1c.<\/p>\n<h2 id=\"toc-3-dao-sau-theo-chu-de-phuong-phap-thuc-chien-va-phon\">\u0110\u00e0o s\u00e2u theo ch\u1ee7 \u0111\u1ec1: ph\u01b0\u01a1ng ph\u00e1p th\u1ef1c chi\u1ebfn v\u00e0 ph\u00f2ng tr\u00e1nh r\u1ee7i ro<\/h2>\n<p>B\u01b0\u1edbc \u0111\u1ea7u, nhi\u1ec1u l\u1ed7i c\u00f3 th\u1ec3 ph\u00e1t hi\u1ec7n ch\u1ec9 b\u1eb1ng m\u1eaft n\u1ebfu bi\u1ebft nh\u00ecn \u0111\u00fang \u0111i\u1ec3m. Ch\u00fang t\u00f4i t\u1ed5ng h\u1ee3p c\u00e1c d\u1ea5u hi\u1ec7u v\u1ec1 \u0111\u1ed9 b\u00f3ng, m\u00e0u v\u00e0 khuy\u1ebft t\u1eadt b\u1ec1 m\u1eb7t \u0111\u1ec3 b\u1ea1n lo\u1ea1i nhanh v\u1eadt li\u1ec7u kh\u00f4ng \u0111\u1ea1t ngay t\u1ea1i b\u00e3i h\u00e0ng.<br \/>\n<!-- CLUSTER_PLACEHOLDER_1 --><\/p>\n<p>Ti\u1ebfp theo l\u00e0 th\u1eed nam ch\u00e2m \u2013 thao t\u00e1c nhanh nh\u1ea5t nh\u01b0ng c\u0169ng d\u1ec5 g\u00e2y ng\u1ed9 nh\u1eadn. B\u1ea1n c\u1ea7n bi\u1ebft ch\u00ednh x\u00e1c khi n\u00e0o t\u00edn hi\u1ec7u t\u1eeb t\u00ednh \u0111\u00e1ng tin v\u00e0 khi n\u00e0o n\u00f3 \u0111\u00e1nh l\u1eeba b\u1ea1n do bi\u1ebfn c\u1ee9ng hay v\u00f9ng \u1ea3nh h\u01b0\u1edfng nhi\u1ec7t.<br \/>\n<!-- CLUSTER_PLACEHOLDER_2 --><\/p>\n<p>Khi c\u1ea7n ph\u00e2n bi\u1ec7t 304 v\u1edbi 201, thu\u1ed1c th\u1eed chuy\u00ean d\u1ee5ng\/axit l\u00e0 c\u00f4ng c\u1ee5 r\u1ebb v\u00e0 hi\u1ec7u qu\u1ea3 n\u1ebfu d\u00f9ng \u0111\u00fang quy tr\u00ecnh. Ph\u1ea7n n\u00e0y tr\u00ecnh b\u00e0y h\u00f3a ch\u1ea5t ph\u00f9 h\u1ee3p, c\u00e1ch chu\u1ea9n b\u1ecb b\u1ec1 m\u1eb7t, th\u1eddi gian ph\u1ea3n \u1ee9ng v\u00e0 c\u00e1ch \u0111\u1ecdc k\u1ebft qu\u1ea3 an to\u00e0n.<br \/>\n<!-- CLUSTER_PLACEHOLDER_3 --><\/p>\n<p>V\u1edbi th\u1ee3 c\u01a1 kh\u00ed c\u00f3 m\u00e1y m\u00e0i s\u1eb5n t\u1ea1i x\u01b0\u1edfng, ph\u00e2n t\u00edch tia l\u1eeda l\u00e0 m\u1eb9o h\u1eefu \u00edch \u0111\u1ec3 nh\u1eadn di\u1ec7n nhanh h\u1ecd th\u00e9p. B\u1ea1n s\u1ebd th\u1ea5y ki\u1ec3u tia, m\u00e0u s\u1eafc v\u00e0 m\u1ee9c ph\u00e2n nh\u00e1nh kh\u00e1c nhau gi\u1eefa austenitic, ferritic v\u00e0 th\u00e9p carbon.<br \/>\n<!-- CLUSTER_PLACEHOLDER_4 --><\/p>\n<p>\u0110o tr\u1ecdng l\u01b0\u1ee3ng ri\u00eang gi\u00fap ph\u00e1t hi\u1ec7n gian l\u1eadn b\u1ec1 d\u00e0y ho\u1eb7c thay th\u1ebf m\u00e1c \u1edf c\u1ea5p l\u00f4. Ch\u00fang t\u00f4i h\u01b0\u1edbng d\u1eabn t\u00ednh to\u00e1n kh\u1ed1i l\u01b0\u1ee3ng l\u00fd thuy\u1ebft, so s\u00e1nh tr\u1ecdng l\u01b0\u1ee3ng th\u1ef1c t\u1ebf v\u00e0 bi\u00ean \u0111\u1ed9 sai s\u1ed1 ch\u1ea5p nh\u1eadn \u0111\u01b0\u1ee3c.<br \/>\n<!-- CLUSTER_PLACEHOLDER_5 --><\/p>\n<p>Th\u1ecb tr\u01b0\u1eddng th\u01b0\u1eddng xu\u1ea5t hi\u1ec7n \u201c304 gi\u1ea3 304\u201d ho\u1eb7c \u201clo\u1ea1i 2 gi\u1ea3 lo\u1ea1i 1\u201d. B\u1ea1n s\u1ebd bi\u1ebft c\u00e1c chi\u00eau tr\u00f2 nh\u01b0 \u0111\u00f3ng d\u1eadp sai m\u00e1c, pha tr\u1ed9n cu\u1ed9n, ph\u1ee7 h\u00f3a ch\u1ea5t che r\u1ec9\u2026 v\u00e0 c\u00e1ch b\u1ecbt c\u00e1c \u201ckhe h\u1edf\u201d trong h\u1ee3p \u0111\u1ed3ng v\u00e0 quy tr\u00ecnh nh\u1eadn h\u00e0ng.<br \/>\n<!-- CLUSTER_PLACEHOLDER_6 --><\/p>\n<p>CO\/CQ kh\u00f4ng c\u00f2n \u201ct\u1ea5m b\u00f9a\u201d n\u1ebfu kh\u00f4ng x\u00e1c minh. Ch\u00fang t\u00f4i \u0111\u01b0a ra quy tr\u00ecnh ki\u1ec3m tra t\u00ednh x\u00e1c th\u1ef1c: t\u1eeb \u0111\u1ed1i chi\u1ebfu heat number, tra c\u1ee9u online \u0111\u1ebfn so ch\u00e9o d\u1eef li\u1ec7u h\u1ea3i quan\/\u0111\u00f3ng g\u00f3i.<br \/>\n<!-- CLUSTER_PLACEHOLDER_7 --><\/p>\n<p>Khi d\u1ef1 \u00e1n \u0111\u00f2i h\u1ecfi \u0111\u1ed9 ch\u1eafc ch\u1eafn tuy\u1ec7t \u0111\u1ed1i, h\u00e3y \u0111\u01b0a m\u1eabu v\u00e0o lab. B\u1ea1n s\u1ebd hi\u1ec3u kh\u00e1c bi\u1ec7t gi\u1eefa XRF, OES v\u00e0 ICP; khi n\u00e0o c\u1ea7n \u0111o C \u0111\u1ec3 ph\u00e2n bi\u1ec7t 304\/304L; v\u00e0 ti\u00eau ch\u00ed ch\u1ecdn \u0111\u01a1n v\u1ecb ki\u1ec3m \u0111\u1ecbnh.<br \/>\n<!-- CLUSTER_PLACEHOLDER_8 --><\/p>\n<p>\u0110\u1ec3 h\u1ec7 th\u1ed1ng h\u00f3a, ch\u00fang t\u00f4i cung c\u1ea5p checklist 10 b\u01b0\u1edbc ki\u1ec3m tra tr\u01b0\u1edbc khi nh\u1eadp kho. Nh\u1edd \u0111\u00f3, \u0111\u1ed9i kho\/x\u01b0\u1edfng c\u00f3 th\u1ec3 thao t\u00e1c nh\u1ea5t qu\u00e1n, gi\u1ea3m ph\u1ee5 thu\u1ed9c v\u00e0o \u201ckinh nghi\u1ec7m truy\u1ec1n mi\u1ec7ng\u201d.<br \/>\n<!-- CLUSTER_PLACEHOLDER_9 --><\/p>\n<p>Cu\u1ed1i c\u00f9ng, l\u00e0m r\u00f5 Inox \u201clo\u1ea1i 1\u201d v\u00e0 \u201clo\u1ea1i 2 (t\u00e1i ch\u1ebf)\u201d theo c\u00e1ch th\u1ecb tr\u01b0\u1eddng Vi\u1ec7t Nam \u0111ang d\u00f9ng, c\u00e1c r\u1ee7i ro l\u1ea9n khu\u1ea5t ph\u00eda sau m\u1ee9c gi\u00e1 \u201ch\u1eddi\u201d v\u00e0 ch\u1ec9 d\u1eabn ch\u1ecdn \u0111\u00fang theo m\u1ee5c \u0111\u00edch s\u1eed d\u1ee5ng.<br \/>\n<!-- CLUSTER_PLACEHOLDER_10 --><\/p>\n<h2 id=\"toc-4-ung-dung-thuc-te-va-khuyen-nghi-tu-chuyen-gia\">\u1ee8ng d\u1ee5ng th\u1ef1c t\u1ebf v\u00e0 khuy\u1ebfn ngh\u1ecb t\u1eeb chuy\u00ean gia<\/h2>\n<p>\u1ee8ng d\u1ee5ng \u0111i\u1ec3n h\u00ecnh:<br \/>\n&#8211; Thi c\u00f4ng b\u1ebfp c\u00f4ng nghi\u1ec7p: \u01b0u ti\u00ean 304\/316 cho b\u1ec1 m\u1eb7t ti\u1ebfp x\u00fac th\u1ef1c ph\u1ea9m; ki\u1ec3m tra nhanh b\u1eb1ng thu\u1ed1c th\u1eed Ni, PMI ng\u1eabu nhi\u00ean 5\u201310% l\u00f4; y\u00eau c\u1ea7u MTC theo ASTM A240\/A554.<br \/>\n&#8211; Lan can, m\u1eb7t d\u1ef1ng: 304 cho ngo\u00e0i tr\u1eddi \u0111\u00f4 th\u1ecb; n\u1ebfu b\u1edd bi\u1ec3n n\u00ean c\u00e2n nh\u1eafc 316; ki\u1ec3m tra chi\u1ec1u d\u00e0y h\u1eefu hi\u1ec7u b\u1eb1ng c\u00e2n v\u00e0 th\u01b0\u1edbc c\u1eb7p v\u00ec nh\u00e0 th\u1ea7u ph\u1ee5 d\u1ec5 \u201cr\u00fat\u201d b\u1ec1 d\u00e0y.<br \/>\n&#8211; \u1ed0ng trang tr\u00ed: 201 c\u00f3 th\u1ec3 d\u00f9ng trong nh\u00e0 kh\u00f4; b\u1eaft bu\u1ed9c th\u00f4ng gi\u00f3 t\u1ed1t v\u00e0 tr\u00e1nh chloride; x\u00e1c nh\u1eadn r\u00f5 m\u00e1c tr\u00ean h\u1ee3p \u0111\u1ed3ng v\u00e0 d\u1eadp m\u00e1c tr\u00ean \u1ed1ng.<\/p>\n<p>5 th\u1ef1c h\u00e0nh t\u1ed1t:<br \/>\n1) Ghi r\u00f5 ti\u00eau chu\u1ea9n, m\u00e1c, b\u1ec1 m\u1eb7t, b\u1ec1 d\u00e0y, sai s\u1ed1, y\u00eau c\u1ea7u PMI\/CO\/CQ trong h\u1ee3p \u0111\u1ed3ng; k\u00e8m \u0111i\u1ec1u kho\u1ea3n ph\u1ea1t khi sai kh\u00e1c.<br \/>\n2) L\u1ea5y m\u1eabu v\u00e0 ni\u00eam phong theo heat\/lot; th\u1eed nhanh t\u1ea1i ch\u1ed7 (nam ch\u00e2m, c\u00e2n, th\u01b0\u1edbc c\u1eb7p) tr\u01b0\u1edbc khi d\u1ee1 h\u1ebft h\u00e0ng.<br \/>\n3) S\u1eed d\u1ee5ng check-list nh\u1eadp kho v\u00e0 ch\u1ee5p \u1ea3nh b\u1ec1 m\u1eb7t, tem cu\u1ed9n, heat number.<br \/>\n4) Th\u1ef1c hi\u1ec7n PMI XRF ng\u1eabu nhi\u00ean cho l\u00f4 >5 t\u1ea5n ho\u1eb7c d\u00f9ng cho m\u00f4i tr\u01b0\u1eddng kh\u1eafc nghi\u1ec7t.<br \/>\n5) B\u1ea3o qu\u1ea3n kh\u00f4 r\u00e1o, t\u00e1ch bi\u1ec7t th\u00e9p carbon; v\u1ec7 sinh b\u1ec1 m\u1eb7t sau gia c\u00f4ng \u0111\u1ec3 ph\u1ee5c h\u1ed3i l\u1edbp th\u1ee5 \u0111\u1ed9ng.<\/p>\n<p>4 sai l\u1ea7m c\u1ea7n tr\u00e1nh:<br \/>\n1) D\u1ef1a ho\u00e0n to\u00e0n v\u00e0o th\u1eed nam ch\u00e2m \u0111\u1ec3 ph\u00e2n bi\u1ec7t 201\/304.<br \/>\n2) B\u1ecf qua x\u00e1c minh CO\/CQ v\u00e0 kh\u00f4ng \u0111\u1ed1i chi\u1ebfu heat number tr\u00ean tem v\u00e0 MTC.<br \/>\n3) Ch\u1ec9 nh\u00ecn b\u1ec1 m\u1eb7t b\u00f3ng l\u00e0 k\u1ebft lu\u1eadn \u201c304 th\u1eadt\u201d.<br \/>\n4) Kh\u00f4ng c\u00e2n \u0111\u1ed1i tr\u1ecdng l\u01b0\u1ee3ng l\u00f4 \u0111\u1ec3 ph\u00e1t hi\u1ec7n gian l\u1eadn b\u1ec1 d\u00e0y\/kh\u1ed5.<\/p>\n<p>Ca ng\u1eafn t\u1eeb hi\u1ec7n tr\u01b0\u1eddng:<br \/>\n&#8211; M\u1ed9t x\u01b0\u1edfng c\u1eeda t\u1ea1i H\u00e0 N\u1ed9i gi\u1ea3m b\u1ea3o h\u00e0nh r\u1ec9 s\u00e9t 70% sau khi \u00e1p d\u1ee5ng c\u00e2n \u0111\u1ed1i tr\u1ecdng l\u01b0\u1ee3ng v\u00e0 PMI ng\u1eabu nhi\u00ean 10% \u1ed1ng\/\u0111\u1ee3t.<br \/>\n&#8211; D\u1ef1 \u00e1n b\u1ec3 h\u00f3a ch\u1ea5t tr\u00e1nh \u0111\u01b0\u1ee3c thay th\u1ebf 316 b\u1eb1ng 304 nh\u1edd \u201cMoly drop test\u201d t\u1ea1i ch\u1ed7, ti\u1ebft ki\u1ec7m chi ph\u00ed kh\u1eafc ph\u1ee5c l\u1edbn.<\/p>\n<h2 id=\"toc-5-ket-luan-va-loi-keu-goi-hanh-dong\">K\u1ebft lu\u1eadn v\u00e0 l\u1eddi k\u00eau g\u1ecdi h\u00e0nh \u0111\u1ed9ng<\/h2>\n<p>Ph\u00e2n bi\u1ec7t v\u00e0 ki\u1ec3m \u0111\u1ecbnh Inox hi\u1ec7u qu\u1ea3 \u0111\u00f2i h\u1ecfi k\u1ebft h\u1ee3p \u201cm\u1eaft ngh\u1ec1\u201d, ph\u00e9p th\u1eed nhanh v\u00e0 ki\u1ec3m \u0111\u1ecbnh quang ph\u1ed5 khi c\u1ea7n thi\u1ebft, c\u00f9ng quy tr\u00ecnh gi\u1ea5y t\u1edd ch\u1eb7t ch\u1ebd. H\u00e3y chu\u1ea9n h\u00f3a c\u00f4ng t\u00e1c nh\u1eadp h\u00e0ng v\u1edbi checklist 10 b\u01b0\u1edbc, x\u00e1c minh CO\/CQ v\u00e0 l\u1ef1a ch\u1ecdn \u0111\u00fang m\u00e1c cho \u0111\u00fang vi\u1ec7c \u0111\u1ec3 t\u1ed1i \u01b0u chi ph\u00ed v\u00f2ng \u0111\u1eddi thi\u1ebft b\u1ecb. N\u1ebfu b\u1ea1n c\u1ea7n t\u01b0 v\u1ea5n ch\u1ecdn m\u00e1c, thi\u1ebft l\u1eadp quy tr\u00ecnh PMI t\u1ea1i x\u01b0\u1edfng, hay h\u1ed7 tr\u1ee3 x\u00e1c minh CO\/CQ v\u00e0 cung c\u1ea5p m\u1eabu \u0111\u1ed1i chi\u1ebfu, h\u00e3y li\u00ean h\u1ec7 \u0111\u1ed9i ng\u0169 k\u1ef9 thu\u1eadt c\u1ee7a ch\u00fang t\u00f4i t\u1ea1i H\u00e0 N\u1ed9i. Ch\u00fang t\u00f4i s\u1eb5n s\u00e0ng t\u1ed5 ch\u1ee9c demo ki\u1ec3m tra th\u1ef1c \u0111\u1ecba, g\u1eedi m\u1eabu b\u1ec1 m\u1eb7t v\u00e0 b\u00e1o gi\u00e1 theo ti\u00eau chu\u1ea9n ASTM\/JIS \u2013 gi\u00fap b\u1ea1n mua \u0111\u00fang ngay t\u1eeb \u0111\u1ea7u v\u00e0 y\u00ean t\u00e2m trong su\u1ed1t v\u00f2ng \u0111\u1eddi d\u1ef1 \u00e1n.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>H\u01b0\u1edbng d\u1eabn th\u1ef1c chi\u1ebfn ph\u00e2n bi\u1ec7t, ki\u1ec3m \u0111\u1ecbnh Inox: nh\u00ecn b\u1ec1 m\u1eb7t, th\u1eed nam ch\u00e2m, axit \u0111\u1ebfn PMI lab. Tr\u00e1nh h\u00e0ng gi\u1ea3 304, x\u00e1c minh CO\/CQ, nh\u1eadp h\u00e0ng an to\u00e0n.<\/p>\n","protected":false},"author":7,"featured_media":1042,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[23],"tags":[],"class_list":["post-1902","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tin-tuc"],"acf":[],"_links":{"self":[{"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/posts\/1902","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/users\/7"}],"replies":[{"embeddable":true,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/comments?post=1902"}],"version-history":[{"count":0,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/posts\/1902\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/media\/1042"}],"wp:attachment":[{"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/media?parent=1902"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/categories?post=1902"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/tags?post=1902"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}