{"id":1455,"date":"2025-12-21T00:34:02","date_gmt":"2025-12-20T17:34:02","guid":{"rendered":"https:\/\/inoxcuongthinh.com\/cam-nang-phan-biet-va-kiem-dinh-chat-luong-inox-chuan-ky-thuat\/"},"modified":"2025-12-26T00:35:38","modified_gmt":"2025-12-25T17:35:38","slug":"cam-nang-phan-biet-va-kiem-dinh-chat-luong-inox-chuan-ky-thuat","status":"publish","type":"post","link":"https:\/\/inoxcuongthinh.com\/cam-nang-phan-biet-va-kiem-dinh-chat-luong-inox-chuan-ky-thuat\/","title":{"rendered":"C\u1ea9m nang ph\u00e2n bi\u1ec7t v\u00e0 ki\u1ec3m \u0111\u1ecbnh ch\u1ea5t l\u01b0\u1ee3ng Inox chu\u1ea9n k\u1ef9 thu\u1eadt"},"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-va-loai-2-tai-che-nhan-biet-nhanh-va-rui-ro\/\" target=\"_blank\" rel=\"noopener noreferrer\">Inox lo\u1ea1i 1 v\u00e0 lo\u1ea1i 2 (t\u00e1i ch\u1ebf): nh\u1eadn bi\u1ebft nhanh v\u00e0 r\u1ee7i ro<\/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\/\" 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-phong-lab-phan-tich-quang-pho-oes-xrf-icp-chinh-xac\/\" target=\"_blank\" rel=\"noopener noreferrer\">Ki\u1ec3m \u0111\u1ecbnh Inox ph\u00f2ng lab: ph\u00e2n t\u00edch quang ph\u1ed5 OES, XRF, ICP 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-cho-inox-quy-trinh-chuan\/\" target=\"_blank\" rel=\"noopener noreferrer\">C\u00e1ch x\u00e1c minh t\u00ednh x\u00e1c th\u1ef1c CO, CQ cho inox: quy tr\u00ecnh chu\u1ea9n<\/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-mao-inox-304-va-10-cach-kiem-tra-phong-tranh\/\" target=\"_blank\" rel=\"noopener noreferrer\">Chi\u00eau tr\u00f2 gi\u1ea3 m\u1ea1o Inox 304 v\u00e0 10 c\u00e1ch ki\u1ec3m tra, ph\u00f2ng tr\u00e1nh<\/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-tra-inox-bang-do-trong-luong-rieng-phan-biet-201-304-316\/\" target=\"_blank\" rel=\"noopener noreferrer\">Ki\u1ec3m tra Inox b\u1eb1ng \u0111o tr\u1ecdng l\u01b0\u1ee3ng ri\u00eang: ph\u00e2n bi\u1ec7t 201, 304, 316<\/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-qua-tia-lua-mai-nhan-biet-304-201-430-410\/\" target=\"_blank\" rel=\"noopener noreferrer\">Ph\u00e2n bi\u1ec7t inox qua tia l\u1eeda m\u00e0i: nh\u1eadn bi\u1ebft 304, 201, 430, 410<\/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-thuoc-thu-de-phan-biet-inox-304-va-201\/\" target=\"_blank\" rel=\"noopener noreferrer\">H\u01b0\u1edbng d\u1eabn d\u00f9ng axit\/thu\u1ed1c th\u1eed \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-khi-nao-dung-khi-nao-sai-huong-dan-chuan-cho-201-304-316-430\/\" target=\"_blank\" rel=\"noopener noreferrer\">Th\u1eed nam ch\u00e2m ph\u00e2n bi\u1ec7t inox: Khi n\u00e0o \u0111\u00fang, khi n\u00e0o sai? H\u01b0\u1edbng d\u1eabn chu\u1ea9n cho 201\/304\/316\/430<\/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-bang-mat-do-bong-mau-be-mat-201-304-316-430\/\" target=\"_blank\" rel=\"noopener noreferrer\">Ph\u00e2n bi\u1ec7t Inox b\u1eb1ng m\u1eaft: \u0111\u1ed9 b\u00f3ng, m\u00e0u, b\u1ec1 m\u1eb7t 201\/304\/316\/430<\/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-de-nhan-biet-va-kiem-dinh-inox\">H\u01b0\u1edbng d\u1eabn to\u00e0n di\u1ec7n \u0111\u1ec3 nh\u1eadn bi\u1ebft v\u00e0 ki\u1ec3m \u0111\u1ecbnh Inox trong th\u1ef1c t\u1ebf thi c\u00f4ng<\/a><\/li>\n<li><a href=\"#toc-1-tong-quan-nen-tang-thep-khong-gi-la-gi-va-vi-sao-p\">T\u1ed5ng quan n\u1ec1n t\u1ea3ng: Th\u00e9p kh\u00f4ng g\u1ec9 l\u00e0 g\u00ec v\u00e0 v\u00ec sao ph\u1ea3i ki\u1ec3m \u0111\u1ecbnh?<\/a><\/li>\n<li><a href=\"#toc-2-cac-khia-canh-cot-loi-khi-phan-biet-va-kiem-dinh-i\">C\u00e1c 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-cac-chu-de-lien-quan-va-huong-dan-chi-tiet\">\u0110\u00e0o s\u00e2u c\u00e1c ch\u1ee7 \u0111\u1ec1 li\u00ean quan v\u00e0 h\u01b0\u1edbng d\u1eabn chi ti\u1ebft<\/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-de-nhan-biet-va-kiem-dinh-inox\">H\u01b0\u1edbng d\u1eabn to\u00e0n di\u1ec7n \u0111\u1ec3 nh\u1eadn bi\u1ebft v\u00e0 ki\u1ec3m \u0111\u1ecbnh Inox trong th\u1ef1c t\u1ebf thi c\u00f4ng<\/h2>\n<p>Trong b\u1ed1i c\u1ea3nh v\u1eadt t\u01b0 bi\u1ebfn \u0111\u1ed9ng v\u00e0 h\u00e0ng gi\u1ea3 tr\u00e0 tr\u1ed9n, vi\u1ec7c ch\u1ecdn nh\u1ea7m m\u00e1c Inox c\u00f3 th\u1ec3 khi\u1ebfn c\u00f4ng tr\u00ecnh b\u1ecb \u0103n m\u00f2n s\u1edbm, m\u1ed1i h\u00e0n n\u1ee9t, ho\u1eb7c chi ph\u00ed b\u1ea3o tr\u00ec \u0111\u1ed9i l\u00ean g\u1ea5p nhi\u1ec1u l\u1ea7n. Kh\u00f4ng \u00edt x\u01b0\u1edfng v\u00e0 nh\u00e0 th\u1ea7u t\u1ea1i H\u00e0 N\u1ed9i t\u1eebng \u201cd\u00ednh \u0111\u00f2n\u201d khi nh\u1eadp 201 thay cho 304, ho\u1eb7c g\u1eb7p ch\u1ee9ng ch\u1ec9 kh\u00f4ng kh\u1edbp v\u1edbi th\u1ef1c t\u1ebf l\u00f4 h\u00e0ng. B\u00e0i vi\u1ebft n\u00e0y cung c\u1ea5p m\u1ed9t khung ph\u01b0\u01a1ng ph\u00e1p \u0111\u1ea7y \u0111\u1ee7 \u2013 t\u1eeb nh\u1eadn bi\u1ebft nhanh t\u1ea1i hi\u1ec7n tr\u01b0\u1eddng \u0111\u1ebfn ki\u1ec3m \u0111\u1ecbnh chuy\u00ean nghi\u1ec7p \u2013 \u0111\u1ec3 b\u1ea1n ph\u00e2n bi\u1ec7t \u0111\u00fang m\u00e1c th\u00e9p kh\u00f4ng g\u1ec9 (201\/304\/316\/430\u2026), \u0111\u00e1nh gi\u00e1 ch\u1ea5t l\u01b0\u1ee3ng l\u00f4 v\u1eadt t\u01b0 v\u00e0 gi\u1ea3m r\u1ee7i ro mua h\u00e0ng. B\u1ea1n s\u1ebd n\u1eafm \u0111\u01b0\u1ee3c khi n\u00e0o th\u1eed nam ch\u00e2m l\u00e0 h\u1ee3p l\u00fd, khi n\u00e0o c\u1ea7n d\u00f9ng thu\u1ed1c th\u1eed\/axit, c\u00e1ch \u0111\u1ecdc CO\/CQ, v\u00e0 ti\u00eau ch\u00ed quan tr\u1ecdng \u0111\u1ec3 nghi\u1ec7m thu tr\u01b0\u1edbc khi nh\u1eadp kho. M\u1ee5c ti\u00eau l\u00e0 gi\u00fap k\u1ef9 s\u01b0, th\u1ee3 v\u00e0 qu\u1ea3n l\u00fd v\u1eadt t\u01b0 c\u00f3 quy tr\u00ecnh ki\u1ec3m tra r\u00f5 r\u00e0ng, ra quy\u1ebft \u0111\u1ecbnh nhanh, ch\u00ednh x\u00e1c v\u00e0 t\u1ed1i \u01b0u chi ph\u00ed v\u00f2ng \u0111\u1eddi c\u00f4ng tr\u00ecnh.<\/p>\n<h2 id=\"toc-1-tong-quan-nen-tang-thep-khong-gi-la-gi-va-vi-sao-p\">T\u1ed5ng quan n\u1ec1n t\u1ea3ng: Th\u00e9p kh\u00f4ng g\u1ec9 l\u00e0 g\u00ec v\u00e0 v\u00ec sao ph\u1ea3i ki\u1ec3m \u0111\u1ecbnh?<\/h2>\n<p>Th\u00e9p kh\u00f4ng g\u1ec9 (Inox) l\u00e0 h\u1ee3p kim s\u1eaft ch\u1ee9a t\u1ed1i thi\u1ec3u ~10,5% Cr t\u1ea1o m\u00e0ng th\u1ee5 \u0111\u1ed9ng ch\u1ed1ng \u0103n m\u00f2n. C\u00e1c nh\u00f3m ch\u00ednh:<br \/>\n&#8211; Austenitic (v\u00ed d\u1ee5 201, 304, 316): kh\u00f4ng nhi\u1ec5m t\u1eeb \u1edf tr\u1ea1ng th\u00e1i \u1ee7, ch\u1ed1ng \u0103n m\u00f2n t\u1ed1t; 316 c\u00f3 Mo ch\u1ed1ng r\u1ed7 pitting trong m\u00f4i tr\u01b0\u1eddng clorua.<br \/>\n&#8211; Ferritic (v\u00ed d\u1ee5 430): nhi\u1ec5m t\u1eeb, ch\u1ed1ng \u0103n m\u00f2n trung b\u00ecnh, gi\u00e1 th\u1ea5p h\u01a1n.<br \/>\n&#8211; Martensitic (v\u00ed d\u1ee5 410\/420): nhi\u1ec5m t\u1eeb m\u1ea1nh, t\u00f4i c\u1ee9ng, ch\u1ed1ng m\u00e0i m\u00f2n, ch\u1ed1ng \u0103n m\u00f2n k\u00e9m h\u01a1n 304\/316.<\/p>\n<p>M\u1ed9t s\u1ed1 m\u00e1c ph\u1ed5 bi\u1ebfn:<br \/>\n&#8211; 201: Ni th\u1ea5p, Mn\/N cao; gi\u00e1 r\u1ebb, ch\u1ed1ng \u0103n m\u00f2n k\u00e9m h\u01a1n 304.<br \/>\n&#8211; 304 (EN 1.4301): ph\u1ed5 d\u1ee5ng nh\u1ea5t, c\u00e2n b\u1eb1ng t\u00ednh n\u0103ng\/gi\u00e1.<br \/>\n&#8211; 316 (EN 1.4401\/1.4404): c\u00f3 Mo, b\u1ec1n m\u00f4i tr\u01b0\u1eddng bi\u1ec3n\/h\u00f3a ch\u1ea5t nh\u1eb9.<br \/>\n&#8211; 430: kinh t\u1ebf cho n\u1ed9i th\u1ea5t, trang tr\u00ed trong nh\u00e0.<\/p>\n<p>V\u00ec sao ph\u1ea3i ki\u1ec3m \u0111\u1ecbnh? M\u00e1c th\u00e9p sai d\u1eabn \u0111\u1ebfn r\u1ec9 s\u00e9t, ph\u1ed3ng r\u1ed9p, h\u1ecfng m\u1ed1i h\u00e0n, d\u1eebng m\u00e1y. Ki\u1ec3m \u0111\u1ecbnh \u0111\u00fang gi\u00fap:<br \/>\n&#8211; \u0110\u1ea3m b\u1ea3o tu\u00e2n th\u1ee7 ti\u00eau chu\u1ea9n (ASTM A240\/JIS G4304\/05, EN).<br \/>\n&#8211; Ki\u1ec3m so\u00e1t chi ph\u00ed v\u00f2ng \u0111\u1eddi (LCC).<br \/>\n&#8211; Truy xu\u1ea5t ngu\u1ed3n g\u1ed1c (heat number, l\u00f4).<br \/>\n&#8211; B\u1ea3o v\u1ec7 uy t\u00edn nh\u00e0 th\u1ea7u v\u00e0 an to\u00e0n c\u00f4ng tr\u00ecnh.<\/p>\n<h2 id=\"toc-2-cac-khia-canh-cot-loi-khi-phan-biet-va-kiem-dinh-i\">C\u00e1c 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 v\u00e0 t\u1ed5 ch\u1ee9c kim lo\u1ea1i quy\u1ebft \u0111\u1ecbnh t\u00ednh n\u0103ng<\/h3>\n<p>H\u00e0m l\u01b0\u1ee3ng Cr, Ni, Mo, C, Mn, N\u2026 quy \u0111\u1ecbnh t\u1eeb kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n \u0111\u1ebfn t\u00ednh nhi\u1ec5m t\u1eeb. V\u00ed d\u1ee5: 304 c\u00f3 ~18%Cr, ~8%Ni; 201 Ni th\u1ea5p h\u01a1n r\u00f5 r\u1ec7t n\u00ean ch\u1ed1ng \u0103n m\u00f2n k\u00e9m h\u01a1n. 316 c\u00f3 2\u20132,5% Mo t\u0103ng ch\u1ed1ng r\u1ed7 trong n\u01b0\u1edbc bi\u1ec3n. Vi\u1ec7c hi\u1ec3u b\u1ea3n ch\u1ea5t n\u00e0y gi\u00fap gi\u1ea3i th\u00edch v\u00ec sao m\u1ed9t s\u1ed1 ph\u00e9p th\u1eed (nam ch\u00e2m, axit, tia l\u1eeda) cho k\u1ebft qu\u1ea3 nh\u01b0 v\u1eady.<\/p>\n<h3>2) Ph\u01b0\u01a1ng ph\u00e1p nh\u1eadn bi\u1ebft hi\u1ec7n tr\u01b0\u1eddng vs. ki\u1ec3m \u0111\u1ecbnh ph\u00f2ng lab<\/h3>\n<p>&#8211; Hi\u1ec7n tr\u01b0\u1eddng: quan s\u00e1t b\u1ec1 m\u1eb7t\/\u0111\u1ed9 b\u00f3ng\/finish (2B, BA, No.4, HL), th\u1eed nam ch\u00e2m, c\u00e2n\/\u0111o tr\u1ecdng l\u01b0\u1ee3ng, test thu\u1ed1c th\u1eed nhanh, tia l\u1eeda m\u00e0i, \u0111o chi\u1ec1u d\u00e0y\/\u0111\u1ed9 ph\u1eb3ng.<br \/>\n&#8211; Ph\u00f2ng lab\/PMI: XRF c\u1ea7m tay x\u00e1c \u0111\u1ecbnh th\u00e0nh ph\u1ea7n h\u1ee3p kim; OES \u0111o s\u00e2u v\u00e0 \u0111o C ch\u00ednh x\u00e1c (quan tr\u1ecdng \u0111\u1ec3 ph\u00e2n bi\u1ec7t 304\/304L); th\u1eed mu\u1ed1i phun\/sunfat, th\u1eed \u0103n m\u00f2n li\u00ean tinh (ASTM A262), k\u00e9o\/n\u00e9n\/\u0111\u1ed9 c\u1ee9ng.<\/p>\n<h3>3) T\u00e0i li\u1ec7u, truy xu\u1ea5t ngu\u1ed3n g\u1ed1c v\u00e0 t\u00ednh ch\u00e2n th\u1ef1c<\/h3>\n<p>CO (xu\u1ea5t x\u1ee9) v\u00e0 CQ\/MTC (ch\u1ee9ng nh\u1eadn ch\u1ea5t l\u01b0\u1ee3ng nh\u00e0 m\u00e1y) ph\u1ea3i kh\u1edbp v\u1edbi m\u00e1c, ti\u00eau chu\u1ea9n, nhi\u1ec7t luy\u1ec7n, k\u00edch th\u01b0\u1edbc, heat number v\u00e0 th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc. D\u1ea5u \u0111\u00f3ng\/m\u00e3 v\u1ea1ch tr\u00ean t\u1ea5m\/cu\u1ed9n\/\u1ed1ng ph\u1ea3i ph\u00f9 h\u1ee3p v\u1edbi ch\u1ee9ng t\u1eeb. PMI ch\u1ecdn m\u1eabu ng\u1eabu nhi\u00ean \u0111\u1ec3 \u0111\u1ed1i ch\u1ee9ng gi\u1ea5y t\u1edd.<\/p>\n<h3>4) Quy tr\u00ecnh nghi\u1ec7m thu v\u00e0 ki\u1ec3m so\u00e1t r\u1ee7i ro<\/h3>\n<p>Th\u1ef1c hi\u1ec7n theo checklist: ki\u1ec3m ngo\u1ea1i quan, \u0111o k\u00edch th\u01b0\u1edbc\/tolerance, th\u1eed nhanh (nam ch\u00e2m\/thu\u1ed1c th\u1eed), c\u00e2n \u0111\u1ed1i chi\u1ebfu l\u00fd thuy\u1ebft, PMI, \u0111\u1ed1i chi\u1ebfu CO\/CQ, ni\u00eam phong v\u00e0 g\u1eafn nh\u00e3n l\u00f4. T\u00f9y r\u1ee7i ro d\u1ef1 \u00e1n (m\u00f4i tr\u01b0\u1eddng bi\u1ec3n, h\u00f3a ch\u1ea5t), n\u00e2ng c\u1ea5p l\u00ean ki\u1ec3m \u0111\u1ecbnh lab v\u00e0 y\u00eau c\u1ea7u 316L thay v\u00ec 304.<\/p>\n<h2 id=\"toc-3-dao-sau-cac-chu-de-lien-quan-va-huong-dan-chi-tiet\">\u0110\u00e0o s\u00e2u c\u00e1c ch\u1ee7 \u0111\u1ec1 li\u00ean quan v\u00e0 h\u01b0\u1edbng d\u1eabn chi ti\u1ebft<\/h2>\n<p>B\u01b0\u1edbc \u0111\u1ea7u trong b\u1ea5t k\u1ef3 quy tr\u00ecnh nh\u1eadn bi\u1ebft l\u00e0 quan s\u00e1t. Nhi\u1ec1u d\u1ea5u hi\u1ec7u tr\u1ef1c quan v\u1ec1 m\u00e0u s\u1eafc, \u0111\u1ed9 b\u00f3ng, v\u1ebft x\u01b0\u1edbc, v\u00e0 m\u00e3 ho\u00e0n thi\u1ec7n b\u1ec1 m\u1eb7t \u0111\u00e3 \u0111\u1ee7 g\u1ee3i \u00fd m\u00e1c v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng x\u1eed l\u00fd. N\u1ebfu b\u1ea1n mu\u1ed1n h\u1ec7 th\u1ed1ng h\u00f3a c\u00e1ch \u201cnh\u00ecn\u201d \u0111\u00fang ngay t\u1eeb \u0111\u1ea7u, h\u00e3y xem h\u01b0\u1edbng d\u1eabn theo ti\u00eau ch\u00ed c\u1ee5 th\u1ec3 d\u01b0\u1edbi \u0111\u00e2y.<br \/>\n<!-- CLUSTER_PLACEHOLDER_1 --><\/p>\n<p>Th\u1eed nam ch\u00e2m l\u00e0 m\u1eb9o ph\u1ed5 bi\u1ebfn nh\u01b0ng d\u1ec5 b\u1ecb hi\u1ec3u sai: austenitic 304\/316 c\u00f3 th\u1ec3 nhi\u1ec5m t\u1eeb nh\u1eb9 sau c\u00e1n ngu\u1ed9i, trong khi 430 lu\u00f4n h\u00fat m\u1ea1nh. Ch\u00fang ta s\u1ebd l\u00e0m r\u00f5 khi n\u00e0o ph\u00e9p th\u1eed n\u00e0y \u0111\u00e1ng tin v\u00e0 khi n\u00e0o c\u1ea7n k\u1ebft h\u1ee3p ph\u01b0\u01a1ng ph\u00e1p kh\u00e1c.<br \/>\n<!-- CLUSTER_PLACEHOLDER_2 --><\/p>\n<p>Khi c\u1ea7n ph\u00e2n bi\u1ec7t 201 v\u1edbi 304 nhanh t\u1ea1i x\u01b0\u1edfng, thu\u1ed1c th\u1eed\/axit chuy\u00ean d\u1ee5ng l\u00e0 l\u1ef1a ch\u1ecdn hi\u1ec7u qu\u1ea3 n\u1ebfu d\u00f9ng \u0111\u00fang quy tr\u00ecnh an to\u00e0n. Ph\u1ea7n sau s\u1ebd m\u00f4 t\u1ea3 chi ti\u1ebft t\u1eebng b\u01b0\u1edbc, th\u1eddi gian ph\u1ea3n \u1ee9ng v\u00e0 c\u00e1ch \u0111\u1ecdc k\u1ebft qu\u1ea3.<br \/>\n<!-- CLUSTER_PLACEHOLDER_3 --><\/p>\n<p>\u0110\u1ed1i v\u1edbi th\u1ee3 c\u01a1 kh\u00ed c\u00f3 m\u00e1y m\u00e0i, tia l\u1eeda l\u00e0 t\u00edn hi\u1ec7u nh\u1eadn di\u1ec7n gi\u00e0u th\u00f4ng tin. Tuy nhi\u00ean, ph\u1ea3i hi\u1ec3u m\u1eabu tia c\u1ee7a 300\/400 series v\u00e0 \u1ea3nh h\u01b0\u1edfng c\u1ee7a \u0111\u00e1 m\u00e0i\/t\u1ed1c \u0111\u1ed9 \u0111\u1ec3 kh\u00f4ng k\u1ebft lu\u1eadn sai.<br \/>\n<!-- CLUSTER_PLACEHOLDER_4 --><\/p>\n<p>M\u1ed9t c\u00e1ch ki\u1ec3m tra \u201c\u00edt tranh c\u00e3i\u201d l\u00e0 \u0111\u1ed1i chi\u1ebfu tr\u1ecdng l\u01b0\u1ee3ng th\u1ef1c v\u1edbi l\u00fd thuy\u1ebft theo k\u00edch th\u01b0\u1edbc. M\u1eb7c d\u00f9 ch\u00eanh l\u1ec7ch m\u00e1c ch\u1ec9 t\u1ea1o kh\u00e1c bi\u1ec7t tr\u1ecdng l\u01b0\u1ee3ng nh\u1ecf, n\u1ebfu \u0111o \u0111\u00fang v\u1eabn l\u00e0 b\u1eb1ng ch\u1ee9ng h\u1ed7 tr\u1ee3 \u0111\u00e1ng gi\u00e1.<br \/>\n<!-- CLUSTER_PLACEHOLDER_5 --><\/p>\n<p>Th\u1ecb tr\u01b0\u1eddng t\u1ed3n t\u1ea1i nhi\u1ec1u chi\u00eau \u201c\u0111\u1ed9i l\u1ed1t\u201d 304: d\u1eadp nh\u00e3n sai, tr\u1ed9n coil, \u0111\u00e1nh b\u00f3ng che khuy\u1ebft, t\u1ea9y\/passivate t\u1ea1m th\u1eddi\u2026 Nh\u1eadn di\u1ec7n \u0111\u00fang c\u00e1c m\u00e1nh n\u00e0y gi\u00fap b\u1ea1n tr\u00e1nh r\u1ee7i ro ngay t\u1eeb kh\u00e2u ch\u00e0o h\u00e0ng.<br \/>\n<!-- CLUSTER_PLACEHOLDER_6 --><\/p>\n<p>Ch\u1ee9ng ch\u1ec9 \u0111\u1eb9p ch\u01b0a ch\u1eafc th\u1eadt. B\u1ea1n n\u00ean bi\u1ebft c\u00e1ch x\u00e1c minh CO\/CQ, d\u00f2 heat number, v\u00e0 \u0111\u1ed1i chi\u1ebfu th\u00f4ng tin v\u1edbi nh\u00e0 m\u00e1y\/\u0111\u1ea1i l\u00fd ch\u00ednh h\u00e3ng \u0111\u1ec3 lo\u1ea1i b\u1ecf gi\u1ea5y t\u1edd gi\u1ea3.<br \/>\n<!-- CLUSTER_PLACEHOLDER_7 --><\/p>\n<p>Khi d\u1ef1 \u00e1n c\u00f3 y\u00eau c\u1ea7u nghi\u00eam ng\u1eb7t, ch\u1ec9 PMI\/XRF ho\u1eb7c ph\u00e2n t\u00edch quang ph\u1ed5 OES\/ICP m\u1edbi cho k\u1ebft qu\u1ea3 tin c\u1eady v\u1ec1 th\u00e0nh ph\u1ea7n v\u00e0 h\u00e0m l\u01b0\u1ee3ng C. Ph\u1ea7n chuy\u00ean s\u00e2u sau \u0111\u00e2y s\u1ebd m\u00f4 t\u1ea3 ph\u1ea1m vi, \u0111\u1ed9 ch\u00ednh x\u00e1c v\u00e0 c\u00e1ch l\u1ea5y m\u1eabu \u0111\u00fang.<br \/>\n<!-- CLUSTER_PLACEHOLDER_8 --><\/p>\n<p>T\u1ed5ng h\u1ee3p c\u00e1c b\u01b0\u1edbc th\u00e0nh checklist gi\u00fap \u0111\u1ed9i ng\u0169 l\u00e0m \u0111\u00fang ngay l\u1ea7n \u0111\u1ea7u, r\u00fat ng\u1eafn th\u1eddi gian nghi\u1ec7m thu v\u00e0 gi\u1ea3m khi\u1ebfu n\u1ea1i. B\u1ea1n c\u00f3 th\u1ec3 \u00e1p d\u1ee5ng danh s\u00e1ch m\u1eabu b\u00ean d\u01b0\u1edbi v\u00e0 t\u00f9y bi\u1ebfn cho quy m\u00f4 kho\/x\u01b0\u1edfng.<br \/>\n<!-- CLUSTER_PLACEHOLDER_9 --><\/p>\n<p>Cu\u1ed1i c\u00f9ng, c\u1ea7n ph\u00e2n bi\u1ec7t h\u00e0ng lo\u1ea1i 1 (prime) v\u1edbi lo\u1ea1i 2\/t\u00e1i ch\u1ebf ho\u1eb7c B-grade. Ch\u00eanh l\u1ec7ch gi\u00e1 d\u1ec5 cu\u1ed1n h\u00fat nh\u01b0ng \u0111i k\u00e8m r\u1ee7i ro k\u1ef9 thu\u1eadt v\u00e0 ph\u00e1p l\u00fd m\u00e0 ng\u01b0\u1eddi mua ph\u1ea3i l\u01b0\u1eddng tr\u01b0\u1edbc.<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>&#8211; L\u1ef1a ch\u1ecdn m\u00e1c theo m\u00f4i tr\u01b0\u1eddng:<br \/>\n  &#8211; N\u1ed9i th\u1ea5t kh\u00f4: 430\/201 c\u00f3 th\u1ec3 \u0111\u1ee7, nh\u01b0ng c\u00e2n nh\u1eafc 304 cho tu\u1ed5i th\u1ecd cao h\u01a1n.<br \/>\n  &#8211; Ngo\u00e0i tr\u1eddi \u0111\u00f4 th\u1ecb\/\u1ea9m: 304\/304L.<br \/>\n  &#8211; Ven bi\u1ec3n\/h\u00f3a ch\u1ea5t nh\u1eb9: 316\/316L \u0111\u1ec3 ch\u1ed1ng r\u1ed7 clorua.<br \/>\n  &#8211; Th\u1ef1c ph\u1ea9m\/y t\u1ebf: \u01b0u ti\u00ean 304L\/316L, y\u00eau c\u1ea7u b\u1ec1 m\u1eb7t BA\/No.4 \u0111\u00fang chu\u1ea9n.<br \/>\n&#8211; Quy tr\u00ecnh ki\u1ec3m tra nhanh t\u1ea1i kho (v\u00ed d\u1ee5 t\u1ea5m 304 No.4):<br \/>\n  1) \u0110\u1ed1i chi\u1ebfu CO\/CQ, heat number, ti\u00eau chu\u1ea9n ASTM A240.<br \/>\n  2) Ki\u1ec3m ngo\u1ea1i quan: x\u01b0\u1edbc s\u00e2u, g\u1ec9, sai finish.<br \/>\n  3) \u0110o chi\u1ec1u d\u00e0y\/th\u1eb3ng ph\u1eb3ng; so tolerance ti\u00eau chu\u1ea9n.<br \/>\n  4) Th\u1eed nam ch\u00e2m (k\u1ef3 v\u1ecdng: r\u1ea5t nh\u1eb9 ho\u1eb7c kh\u00f4ng h\u00fat).<br \/>\n  5) Thu\u1ed1c th\u1eed nhanh \u0111i\u1ec3m nh\u1ecf khu\u1ea5t; r\u1eeda s\u1ea1ch sau th\u1eed.<br \/>\n  6) C\u00e2n\/\u0111o tr\u1ecdng l\u01b0\u1ee3ng \u0111\u1ec3 so m\u1eadt \u0111\u1ed9 l\u00fd thuy\u1ebft (~7,93 g\/cm\u00b3 cho 304).<br \/>\n  7) PMI ng\u1eabu nhi\u00ean \u22655% s\u1ed1 t\u1ea5m\/l\u00f4; ch\u1ee5p l\u1ea1i k\u1ebft qu\u1ea3 \u0111\u00ednh k\u00e8m bi\u00ean b\u1ea3n.<br \/>\n&#8211; Tr\u01b0\u1eddng h\u1ee3p \u0111i\u1ec3n h\u00ecnh:<br \/>\n  &#8211; X\u01b0\u1edfng A d\u00f9ng 201 thay 304 cho tay v\u1ecbn ngo\u00e0i tr\u1eddi, sau 6 th\u00e1ng r\u1ec9 ch\u00e2n h\u00e0n. Kh\u1eafc ph\u1ee5c: chuy\u1ec3n 304L, d\u00f9ng que h\u00e0n 308L, passivate sau h\u00e0n.<br \/>\n  &#8211; D\u1ef1 \u00e1n B ven bi\u1ec3n: 304 b\u1ecb r\u1ed7 pitting. B\u00e0i h\u1ecdc: c\u1ea7n 316L + thi\u1ebft k\u1ebf tho\u00e1t n\u01b0\u1edbc + v\u1ec7 sinh \u0111\u1ecbnh k\u1ef3.<br \/>\n&#8211; Sai l\u1ea7m th\u01b0\u1eddng g\u1eb7p c\u1ea7n tr\u00e1nh:<br \/>\n  &#8211; Ch\u1ec9 d\u1ef1a v\u00e0o nam ch\u00e2m \u0111\u1ec3 k\u1ebft lu\u1eadn m\u00e1c.<br \/>\n  &#8211; Tin CO\/CQ b\u1ea3n scan thi\u1ebfu heat number\/QR x\u00e1c th\u1ef1c.<br \/>\n  &#8211; Kh\u00f4ng th\u1eed t\u1ea1i v\u00f9ng m\u00e9p\/HAZ sau h\u00e0n, n\u01a1i d\u1ec5 \u0103n m\u00f2n.<br \/>\n  &#8211; B\u1ecf qua ki\u1ec3m tra finish v\u00e0 \u0111\u1ed9 nh\u00e1m (\u1ea3nh h\u01b0\u1edfng v\u1ec7 sinh\/\u0103n m\u00f2n k\u1ebd h\u1edf).<br \/>\n  &#8211; Kh\u00f4ng l\u01b0u m\u1eabu v\u00e0 bi\u00ean b\u1ea3n PMI cho truy xu\u1ea5t.<br \/>\n&#8211; Th\u1ef1c h\u00e0nh t\u1ed1t:<br \/>\n  &#8211; Chu\u1ea9n h\u00f3a quy tr\u00ecnh 3 l\u1edbp: m\u1eaft th\u01b0\u1eddng \u2192 th\u1eed nhanh \u2192 PMI\/lab.<br \/>\n  &#8211; L\u1eadp ti\u00eau ch\u00ed ch\u1ea5p nh\u1eadn theo ti\u00eau chu\u1ea9n qu\u1ed1c t\u1ebf v\u00e0 h\u1ee3p \u0111\u1ed3ng.<br \/>\n  &#8211; \u0110\u00e0o t\u1ea1o an to\u00e0n khi d\u00f9ng axit\/thu\u1ed1c th\u1eed; x\u1eed l\u00fd ch\u1ea5t th\u1ea3i \u0111\u00fang quy \u0111\u1ecbnh.<br \/>\n  &#8211; Ni\u00eam phong l\u00f4, g\u1eafn nh\u00e3n r\u00f5 m\u00e1c\/heat number, l\u01b0u h\u1ed3 s\u01a1 \u1ea3nh.<\/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 c\u1ea7n k\u1ebft h\u1ee3p ki\u1ebfn th\u1ee9c v\u1eadt li\u1ec7u, quy tr\u00ecnh hi\u1ec7n tr\u01b0\u1eddng v\u00e0 c\u00f4ng c\u1ee5 ph\u00e2n t\u00edch ph\u00f9 h\u1ee3p v\u1edbi r\u1ee7i ro d\u1ef1 \u00e1n. Khi \u00e1p d\u1ee5ng \u0111\u00fang, b\u1ea1n s\u1ebd lo\u1ea1i b\u1ecf h\u00e0ng gi\u1ea3, ch\u1ecdn \u0111\u00fang 201\/304\/316, t\u1ed1i \u01b0u chi ph\u00ed v\u00e0 k\u00e9o d\u00e0i tu\u1ed5i th\u1ecd c\u00f4ng tr\u00ecnh. N\u1ebfu b\u1ea1n c\u1ea7n t\u01b0 v\u1ea5n ch\u1ecdn m\u00e1c, x\u00e2y d\u1ef1ng checklist nghi\u1ec7m thu, ho\u1eb7c ki\u1ec3m \u0111\u1ecbnh PMI t\u1ea1i kho\/x\u01b0\u1edfng \u1edf H\u00e0 N\u1ed9i, h\u00e3y li\u00ean h\u1ec7 \u0111\u1ed9i ng\u0169 k\u1ef9 thu\u1eadt c\u1ee7a ch\u00fang t\u00f4i \u0111\u1ec3 \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3 nhanh, ch\u00ednh x\u00e1c v\u00e0 minh b\u1ea1ch ch\u1ee9ng ch\u1ec9 CO\/CQ c\u00f9ng ngu\u1ed3n h\u00e0ng chu\u1ea9n.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Bao qu\u00e1t ph\u01b0\u01a1ng ph\u00e1p nh\u1eadn bi\u1ebft v\u00e0 ki\u1ec3m \u0111\u1ecbnh Inox: m\u1eaft th\u01b0\u1eddng, nam ch\u00e2m, axit, tia l\u1eeda, m\u1eadt \u0111\u1ed9 \u0111\u1ebfn quang ph\u1ed5. Tr\u00e1nh h\u00e0ng gi\u1ea3, ch\u1ecdn \u0111\u00fang 201\/304\/316 b\u1ec1n v\u1eefng.<\/p>\n","protected":false},"author":7,"featured_media":1006,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[23],"tags":[],"class_list":["post-1455","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\/1455","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=1455"}],"version-history":[{"count":0,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/posts\/1455\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/media\/1006"}],"wp:attachment":[{"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/media?parent=1455"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/categories?post=1455"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/tags?post=1455"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}