{"id":2407,"date":"2026-08-06T00:33:51","date_gmt":"2026-08-05T17:33:51","guid":{"rendered":"https:\/\/inoxcuongthinh.com\/phan-biet-inox-bang-mat-nhan-biet-qua-do-bong-mau-be-mat-chuan-ky-su\/"},"modified":"2026-08-06T00:33:51","modified_gmt":"2026-08-05T17:33:51","slug":"phan-biet-inox-bang-mat-nhan-biet-qua-do-bong-mau-be-mat-chuan-ky-su","status":"publish","type":"post","link":"https:\/\/inoxcuongthinh.com\/phan-biet-inox-bang-mat-nhan-biet-qua-do-bong-mau-be-mat-chuan-ky-su\/","title":{"rendered":"Ph\u00e2n bi\u1ec7t inox b\u1eb1ng m\u1eaft: nh\u1eadn bi\u1ebft qua \u0111\u1ed9 b\u00f3ng, m\u00e0u, b\u1ec1 m\u1eb7t chu\u1ea9n k\u1ef9 s\u01b0"},"content":{"rendered":"\n\n<div class=\"kk-star-ratings kksr-auto kksr-align-left kksr-valign-top\"\n    data-payload='{&quot;align&quot;:&quot;left&quot;,&quot;id&quot;:&quot;2407&quot;,&quot;slug&quot;:&quot;default&quot;,&quot;valign&quot;:&quot;top&quot;,&quot;ignore&quot;:&quot;&quot;,&quot;reference&quot;:&quot;auto&quot;,&quot;class&quot;:&quot;&quot;,&quot;count&quot;:&quot;0&quot;,&quot;legendonly&quot;:&quot;&quot;,&quot;readonly&quot;:&quot;&quot;,&quot;score&quot;:&quot;0&quot;,&quot;starsonly&quot;:&quot;&quot;,&quot;best&quot;:&quot;5&quot;,&quot;gap&quot;:&quot;5&quot;,&quot;greet&quot;:&quot;\u0110\u00e1nh gi\u00e1&quot;,&quot;legend&quot;:&quot;0\\\/5 - (0 b\u00ecnh ch\u1ecdn)&quot;,&quot;size&quot;:&quot;24&quot;,&quot;title&quot;:&quot;Ph\u00e2n bi\u1ec7t inox b\u1eb1ng m\u1eaft: nh\u1eadn bi\u1ebft qua \u0111\u1ed9 b\u00f3ng, m\u00e0u, b\u1ec1 m\u1eb7t chu\u1ea9n k\u1ef9 s\u01b0&quot;,&quot;width&quot;:&quot;0&quot;,&quot;_legend&quot;:&quot;{score}\\\/{best} - ({count} {votes})&quot;,&quot;font_factor&quot;:&quot;1.25&quot;}'>\n            \n<div class=\"kksr-stars\">\n    \n<div class=\"kksr-stars-inactive\">\n            <div class=\"kksr-star\" data-star=\"1\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"2\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"3\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"4\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"5\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        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class=\"kksr-legend\" style=\"font-size: 19.2px;\">\n            <span class=\"kksr-muted\">\u0110\u00e1nh gi\u00e1<\/span>\n    <\/div>\n    <\/div>\n<div class=\"custom-toc\">\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_85 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/inoxcuongthinh.com\/phan-biet-inox-bang-mat-nhan-biet-qua-do-bong-mau-be-mat-chuan-ky-su\/#Noi_dung_chinh\" >N\u1ed9i dung ch\u00ednh<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/inoxcuongthinh.com\/phan-biet-inox-bang-mat-nhan-biet-qua-do-bong-mau-be-mat-chuan-ky-su\/#Nguyen_tac_va_gioi_han_cua_viec_phan_biet_%E2%80%9Cbang_mat%E2%80%9D\" >Nguy\u00ean t\u1eafc v\u00e0 gi\u1edbi h\u1ea1n c\u1ee7a vi\u1ec7c ph\u00e2n bi\u1ec7t \u201cb\u1eb1ng m\u1eaft\u201d<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/inoxcuongthinh.com\/phan-biet-inox-bang-mat-nhan-biet-qua-do-bong-mau-be-mat-chuan-ky-su\/#He_thong_hoan_thien_be_mat_inox_can_thuoc_long\" >H\u1ec7 th\u1ed1ng ho\u00e0n thi\u1ec7n b\u1ec1 m\u1eb7t inox c\u1ea7n thu\u1ed9c l\u00f2ng<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/inoxcuongthinh.com\/phan-biet-inox-bang-mat-nhan-biet-qua-do-bong-mau-be-mat-chuan-ky-su\/#Nhan_biet_theo_mac_thep_pho_bien_qua_mau_va_do_bong\" >Nh\u1eadn bi\u1ebft theo m\u00e1c th\u00e9p ph\u1ed5 bi\u1ebfn qua m\u00e0u v\u00e0 \u0111\u1ed9 b\u00f3ng<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/inoxcuongthinh.com\/phan-biet-inox-bang-mat-nhan-biet-qua-do-bong-mau-be-mat-chuan-ky-su\/#Nhom_austenitic_201_%E2%80%93_304_%E2%80%93_316316L\" >Nh\u00f3m austenitic: 201 \u2013 304 \u2013 316\/316L<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/inoxcuongthinh.com\/phan-biet-inox-bang-mat-nhan-biet-qua-do-bong-mau-be-mat-chuan-ky-su\/#Nhom_ferritic_430\" >Nh\u00f3m ferritic: 430<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/inoxcuongthinh.com\/phan-biet-inox-bang-mat-nhan-biet-qua-do-bong-mau-be-mat-chuan-ky-su\/#Nhom_martensitic_410420\" >Nh\u00f3m martensitic: 410\/420<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/inoxcuongthinh.com\/phan-biet-inox-bang-mat-nhan-biet-qua-do-bong-mau-be-mat-chuan-ky-su\/#Dau_hieu_be_mat_de_phan_biet_hang_chuan_%E2%80%93_hang_kem\" >D\u1ea5u hi\u1ec7u b\u1ec1 m\u1eb7t \u0111\u1ec3 ph\u00e2n bi\u1ec7t h\u00e0ng chu\u1ea9n \u2013 h\u00e0ng k\u00e9m<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/inoxcuongthinh.com\/phan-biet-inox-bang-mat-nhan-biet-qua-do-bong-mau-be-mat-chuan-ky-su\/#Quan_sat_tem_nhan_dap_mep_tamong_yeu_to_thi_giac_hop_le\" >Quan s\u00e1t tem nh\u00e3n, d\u1eadp m\u00e9p t\u1ea5m\/\u1ed1ng (y\u1ebfu t\u1ed1 th\u1ecb gi\u00e1c h\u1ee3p l\u1ec7)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/inoxcuongthinh.com\/phan-biet-inox-bang-mat-nhan-biet-qua-do-bong-mau-be-mat-chuan-ky-su\/#Quy_trinh_5_buoc_phan_biet_inox_bang_mat_tai_xuong\" >Quy tr\u00ecnh 5 b\u01b0\u1edbc ph\u00e2n bi\u1ec7t inox b\u1eb1ng m\u1eaft t\u1ea1i x\u01b0\u1edfng<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/inoxcuongthinh.com\/phan-biet-inox-bang-mat-nhan-biet-qua-do-bong-mau-be-mat-chuan-ky-su\/#6_tinh_huong_thuc_te_va_cach_xu_ly\" >6 t\u00ecnh hu\u1ed1ng th\u1ef1c t\u1ebf v\u00e0 c\u00e1ch x\u1eed l\u00fd<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/inoxcuongthinh.com\/phan-biet-inox-bang-mat-nhan-biet-qua-do-bong-mau-be-mat-chuan-ky-su\/#Nhan_biet_som_nguy_co_an_mon_qua_dau_vet_be_mat\" >Nh\u1eadn bi\u1ebft s\u1edbm nguy c\u01a1 \u0103n m\u00f2n qua d\u1ea5u v\u1ebft b\u1ec1 m\u1eb7t<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/inoxcuongthinh.com\/phan-biet-inox-bang-mat-nhan-biet-qua-do-bong-mau-be-mat-chuan-ky-su\/#Sai_lam_pho_bien_khi_phan_biet_bang_mat\" >Sai l\u1ea7m ph\u1ed5 bi\u1ebfn khi ph\u00e2n bi\u1ec7t b\u1eb1ng m\u1eaft<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/inoxcuongthinh.com\/phan-biet-inox-bang-mat-nhan-biet-qua-do-bong-mau-be-mat-chuan-ky-su\/#Khi_nao_can_kiem_dinh_bo_sung\" >Khi n\u00e0o c\u1ea7n ki\u1ec3m \u0111\u1ecbnh b\u1ed5 sung<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/inoxcuongthinh.com\/phan-biet-inox-bang-mat-nhan-biet-qua-do-bong-mau-be-mat-chuan-ky-su\/#Tai_lieu_tham_khao\" >T\u00e0i li\u1ec7u tham kh\u1ea3o<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/inoxcuongthinh.com\/phan-biet-inox-bang-mat-nhan-biet-qua-do-bong-mau-be-mat-chuan-ky-su\/#Ket_luan\" >K\u1ebft lu\u1eadn<\/a><\/li><\/ul><\/nav><\/div>\n<h3><span class=\"ez-toc-section\" id=\"Noi_dung_chinh\"><\/span>N\u1ed9i dung ch\u00ednh<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li><a href=\"#toc-0-nguyen-tac-va-gioi-han-cua-viec-phan-biet-bang-mat\">Nguy\u00ean t\u1eafc v\u00e0 gi\u1edbi h\u1ea1n c\u1ee7a vi\u1ec7c ph\u00e2n bi\u1ec7t \u201cb\u1eb1ng m\u1eaft\u201d<\/a><\/li>\n<li><a href=\"#toc-1-he-thong-hoan-thien-be-mat-inox-can-thuoc-long\">H\u1ec7 th\u1ed1ng ho\u00e0n thi\u1ec7n b\u1ec1 m\u1eb7t inox c\u1ea7n thu\u1ed9c l\u00f2ng<\/a><\/li>\n<li><a href=\"#toc-2-nhan-biet-theo-mac-thep-pho-bien-qua-mau-va-do-bon\">Nh\u1eadn bi\u1ebft theo m\u00e1c th\u00e9p ph\u1ed5 bi\u1ebfn qua m\u00e0u v\u00e0 \u0111\u1ed9 b\u00f3ng<\/a><\/li>\n<li><a href=\"#toc-3-dau-hieu-be-mat-de-phan-biet-hang-chuan-hang-kem\">D\u1ea5u hi\u1ec7u b\u1ec1 m\u1eb7t \u0111\u1ec3 ph\u00e2n bi\u1ec7t h\u00e0ng chu\u1ea9n \u2013 h\u00e0ng k\u00e9m<\/a><\/li>\n<li><a href=\"#toc-4-quan-sat-tem-nhan-dap-mep-tamong-yeu-to-thi-giac-h\">Quan s\u00e1t tem nh\u00e3n, d\u1eadp m\u00e9p t\u1ea5m\/\u1ed1ng (y\u1ebfu t\u1ed1 th\u1ecb gi\u00e1c h\u1ee3p l\u1ec7)<\/a><\/li>\n<li><a href=\"#toc-5-quy-trinh-5-buoc-phan-biet-inox-bang-mat-tai-xuong\">Quy tr\u00ecnh 5 b\u01b0\u1edbc ph\u00e2n bi\u1ec7t inox b\u1eb1ng m\u1eaft t\u1ea1i x\u01b0\u1edfng<\/a><\/li>\n<li><a href=\"#toc-6-6-tinh-huong-thuc-te-va-cach-xu-ly\">6 t\u00ecnh hu\u1ed1ng th\u1ef1c t\u1ebf v\u00e0 c\u00e1ch x\u1eed l\u00fd<\/a><\/li>\n<li><a href=\"#toc-7-nhan-biet-som-nguy-co-an-mon-qua-dau-vet-be-mat\">Nh\u1eadn bi\u1ebft s\u1edbm nguy c\u01a1 \u0103n m\u00f2n qua d\u1ea5u v\u1ebft b\u1ec1 m\u1eb7t<\/a><\/li>\n<li><a href=\"#toc-8-sai-lam-pho-bien-khi-phan-biet-bang-mat\">Sai l\u1ea7m ph\u1ed5 bi\u1ebfn khi ph\u00e2n bi\u1ec7t b\u1eb1ng m\u1eaft<\/a><\/li>\n<li><a href=\"#toc-9-khi-nao-can-kiem-dinh-bo-sung\">Khi n\u00e0o c\u1ea7n ki\u1ec3m \u0111\u1ecbnh b\u1ed5 sung<\/a><\/li>\n<li><a href=\"#toc-10-tai-lieu-tham-khao\">T\u00e0i li\u1ec7u tham kh\u1ea3o<\/a><\/li>\n<li><a href=\"#toc-11-ket-luan\">K\u1ebft lu\u1eadn<\/a><\/li>\n<\/ul>\n<\/div>\n<p>Nh\u1eadn di\u1ec7n \u0111\u00fang lo\u1ea1i inox ch\u1ec9 b\u1eb1ng m\u1eaft th\u01b0\u1eddng gi\u00fap k\u1ef9 s\u01b0, th\u1ea7u th\u1ee3 ra quy\u1ebft \u0111\u1ecbnh nhanh khi mua v\u1eadt t\u01b0, ki\u1ec3m h\u00e0ng v\u00e0 ki\u1ec3m so\u00e1t ch\u1ea5t l\u01b0\u1ee3ng t\u1ea1i x\u01b0\u1edfng. B\u00e0i vi\u1ebft n\u00e0y t\u1eadp trung v\u00e0o 3 t\u00edn hi\u1ec7u th\u1ecb gi\u00e1c quan tr\u1ecdng: \u0111\u1ed9 b\u00f3ng, m\u00e0u s\u1eafc v\u00e0 \u0111\u1eb7c \u0111i\u1ec3m b\u1ec1 m\u1eb7t \u2013 k\u00e8m h\u1ec7 th\u1ed1ng ho\u00e0n thi\u1ec7n ti\u00eau chu\u1ea9n (2B, BA, HL\u2026) v\u00e0 c\u00e1c m\u1eb9o th\u1ef1c \u0111\u1ecba \u0111\u1ec3 ph\u00e2n bi\u1ec7t 201\/304\/316, c\u0169ng nh\u01b0 ph\u00e1t hi\u1ec7n h\u00e0ng k\u00e9m, h\u00e0ng \u201cgi\u1ea3 g\u01b0\u01a1ng\u201d. \u0110\u00e2y l\u00e0 m\u1ed9t ph\u1ea7n thi\u1ebft y\u1ebfu trong b\u1ed9 h\u01b0\u1edbng d\u1eabn ph\u00e2n bi\u1ec7t v\u00e0 ki\u1ec3m \u0111\u1ecbnh ch\u1ea5t l\u01b0\u1ee3ng inox tr\u00ean th\u1ecb tr\u01b0\u1eddng, nh\u01b0ng n\u1ed9i dung d\u01b0\u1edbi \u0111\u00e2y \u0111\u1ee7 \u0111\u1ec3 b\u1ea1n \u00e1p d\u1ee5ng ngay t\u1ea1i hi\u1ec7n tr\u01b0\u1eddng.<\/p>\n<h2 id=\"toc-0-nguyen-tac-va-gioi-han-cua-viec-phan-biet-bang-mat\"><span class=\"ez-toc-section\" id=\"Nguyen_tac_va_gioi_han_cua_viec_phan_biet_%E2%80%9Cbang_mat%E2%80%9D\"><\/span>Nguy\u00ean t\u1eafc v\u00e0 gi\u1edbi h\u1ea1n c\u1ee7a vi\u1ec7c ph\u00e2n bi\u1ec7t \u201cb\u1eb1ng m\u1eaft\u201d<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>&#8211; M\u1ee5c ti\u00eau: s\u00e0ng l\u1ecdc nhanh, lo\u1ea1i tr\u1eeb r\u1ee7i ro hi\u1ec3n nhi\u00ean, kh\u00f4ng thay th\u1ebf ho\u00e0n to\u00e0n ki\u1ec3m \u0111\u1ecbnh th\u00e0nh ph\u1ea7n (XRF, MTR).<br \/>\n&#8211; \u0110i\u1ec1u ki\u1ec7n quan s\u00e1t ti\u00eau chu\u1ea9n:<br \/>\n  &#8211; \u00c1nh s\u00e1ng tr\u1eafng trung t\u00ednh 5000\u20136500 K; tr\u00e1nh \u0111\u00e8n v\u00e0ng v\u00ec l\u00e0m \u1ea5m m\u00e0u.<br \/>\n  &#8211; N\u1ec1n tr\u1eafng m\u1edd\/matte, \u0111\u1eb7t m\u1eabu nghi\u00eang 15\u201330\u00b0 so v\u1edbi ngu\u1ed3n s\u00e1ng \u0111\u1ec3 th\u1ea5y c\u1ea3 ph\u1ea3n x\u1ea1 g\u01b0\u01a1ng (specular) l\u1eabn t\u00e1n x\u1ea1 (diffuse).<br \/>\n  &#8211; Th\u00e1o\/l\u1ed9t m\u00e0ng PE b\u1ea3o v\u1ec7 t\u1ea1i v\u00f9ng ki\u1ec3m tra; lau s\u1ea1ch d\u1ea7u m\u1ee1 tr\u01b0\u1edbc khi nh\u00ecn.<br \/>\n  &#8211; So s\u00e1nh v\u1edbi \u201cm\u1eabu chu\u1ea9n\u201d b\u1ea1n tin c\u1eady (v\u00ed d\u1ee5 t\u1ea5m 304 2B chu\u1ea9n).<br \/>\n&#8211; Gi\u1edbi h\u1ea1n: 304 v\u00e0 316 g\u1ea7n nh\u01b0 kh\u00f4ng th\u1ec3 ph\u00e2n bi\u1ec7t ch\u00ednh x\u00e1c ch\u1ec9 b\u1eb1ng m\u1eaft khi c\u00f9ng ho\u00e0n thi\u1ec7n. Nh\u1eadn di\u1ec7n d\u1ef1a m\u00e0u\/\u0111\u1ed9 b\u00f3ng ch\u1ec9 mang t\u00ednh x\u00e1c su\u1ea5t, c\u1ea7n x\u00e1c nh\u1eadn khi c\u00f4ng tr\u00ecnh c\u00f3 y\u00eau c\u1ea7u kh\u1eaft khe.<\/p>\n<h2 id=\"toc-1-he-thong-hoan-thien-be-mat-inox-can-thuoc-long\"><span class=\"ez-toc-section\" id=\"He_thong_hoan_thien_be_mat_inox_can_thuoc_long\"><\/span>H\u1ec7 th\u1ed1ng ho\u00e0n thi\u1ec7n b\u1ec1 m\u1eb7t inox c\u1ea7n thu\u1ed9c l\u00f2ng<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>C\u00e1c ho\u00e0n thi\u1ec7n sau \u0111\u01b0\u1ee3c m\u00f4 t\u1ea3 trong ASTM A480\/EN 10088. Ghi nh\u1eadn \u0111\u00fang m\u00e3 gi\u00fap b\u1ea1n ph\u00e2n bi\u1ec7t \u201cm\u00e1c th\u00e9p\u201d v\u1edbi \u201cho\u00e0n thi\u1ec7n b\u1ec1 m\u1eb7t\u201d, tr\u00e1nh nh\u1ea7m l\u1eabn.<\/p>\n<p>&#8211; No.1 (c\u00e1n n\u00f3ng, t\u1ea9y axit): B\u1ec1 m\u1eb7t th\u00f4, x\u00e1m \u0111\u1eadm, c\u00f2n d\u1ea5u v\u1ea3y c\u00e1n; d\u00f9ng cho t\u1ea5m d\u00e0y, b\u1ed3n b\u1ec3, k\u1ebft c\u1ea5u.<br \/>\n&#8211; 2D (c\u00e1n ngu\u1ed9i, \u1ee7 \u2013 b\u1ec1 m\u1eb7t m\u1edd): X\u00e1m m\u1edd, v\u00e2n r\u1ea5t m\u1ecbn, ph\u1ea3n x\u1ea1 th\u1ea5p; d\u00f9ng cho gia c\u00f4ng s\u00e2u, d\u1eadp k\u00e9o.<br \/>\n&#8211; 2B (c\u00e1n ngu\u1ed9i, \u1ee7 \u2013 b\u1ec1 m\u1eb7t m\u1ecbn): X\u00e1m s\u00e1ng, m\u1ecbn \u0111\u1ed3ng nh\u1ea5t, ph\u1ea3n x\u1ea1 trung b\u00ecnh; l\u00e0 ho\u00e0n thi\u1ec7n \u201cchu\u1ea9n nh\u00e0 m\u00e1y\u201d ph\u1ed5 bi\u1ebfn nh\u1ea5t.<br \/>\n&#8211; BA\/2R (Bright Annealed \u2013 \u1ee7 s\u00e1ng): B\u00f3ng g\u01b0\u01a1ng cao, ph\u1ea3n x\u1ea1 r\u00f5 n\u00e9t \u0111\u01b0\u1eddng bi\u00ean; \u1ea3nh soi \u201cs\u00e2u\u201d v\u00e0 \u00edt m\u00e9o; d\u00f9ng cho trang tr\u00ed cao c\u1ea5p, thang m\u00e1y.<br \/>\n&#8211; No.3 (m\u00e0i #120\u2013180): V\u00e2n m\u00e0i r\u00f5, \u0111\u1ec1u; b\u1ec1 m\u1eb7t h\u01a1i s\u1ea7n.<br \/>\n&#8211; No.4\/HL (Hairline #180\u2013240): V\u00e2n th\u1eb3ng d\u00e0i li\u00ean t\u1ee5c, \u0111\u1ed3ng \u0111\u1ec1u; \u00e1nh b\u00f3ng d\u1ecbu, \u201csang\u201d trong n\u1ed9i th\u1ea5t.<br \/>\n&#8211; SB\/No.6 (v\u00e2n satin\/Scotch-Brite): M\u1edd l\u1ee5a, t\u00e1n x\u1ea1 m\u1ea1nh, che x\u01b0\u1edbc t\u1ed1t.<br \/>\n&#8211; No.8 (g\u01b0\u01a1ng si\u00eau b\u00f3ng): B\u00f3ng nh\u01b0 g\u01b0\u01a1ng soi, g\u1ea7n nh\u01b0 kh\u00f4ng th\u1ea5y h\u1ea1t m\u00e0i; th\u01b0\u1eddng l\u00e0 \u0111\u00e1nh b\u00f3ng c\u01a1 h\u1ecdc ch\u1ea5t l\u01b0\u1ee3ng cao tr\u00ean n\u1ec1n BA.<\/p>\n<p>M\u1eb9o nhanh:<br \/>\n&#8211; BA th\u1eadt: \u1ea3nh ph\u1ea3n x\u1ea1 s\u1eafc n\u00e9t, \u00edt \u201cripple\u201d s\u00f3ng. H\u00e0ng m\u1ea1 g\u01b0\u01a1ng\/\u0111\u00e1nh b\u00f3ng k\u00e9m th\u01b0\u1eddng c\u00f3 \u201cda cam\u201d (orange peel) v\u00e0 qu\u1ea7ng xo\u00e1y v\u00f2ng.<br \/>\n&#8211; HL chu\u1ea9n: v\u00e2n song song, kh\u00f4ng \u0111\u1ee9t \u0111o\u1ea1n; n\u1ebfu c\u00f3 nhi\u1ec1u x\u01b0\u1edbc ch\u00e9o, \u0111\u1ed1m l\u1eabn, kh\u1ea3 n\u0103ng l\u00e0 gia c\u00f4ng l\u1ea1i t\u1eeb 2B.<\/p>\n<h2 id=\"toc-2-nhan-biet-theo-mac-thep-pho-bien-qua-mau-va-do-bon\"><span class=\"ez-toc-section\" id=\"Nhan_biet_theo_mac_thep_pho_bien_qua_mau_va_do_bong\"><\/span>Nh\u1eadn bi\u1ebft theo m\u00e1c th\u00e9p ph\u1ed5 bi\u1ebfn qua m\u00e0u v\u00e0 \u0111\u1ed9 b\u00f3ng<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>L\u01b0u \u00fd: c\u00f9ng m\u1ed9t m\u00e1c, kh\u00e1c ho\u00e0n thi\u1ec7n s\u1ebd cho c\u1ea3m nh\u1eadn r\u1ea5t kh\u00e1c. So s\u00e1nh ch\u1ec9 c\u00f3 \u00fd ngh\u0129a khi b\u1ec1 m\u1eb7t t\u01b0\u01a1ng \u0111\u01b0\u01a1ng.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Nhom_austenitic_201_%E2%80%93_304_%E2%80%93_316316L\"><\/span>Nh\u00f3m austenitic: 201 \u2013 304 \u2013 316\/316L<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>&#8211; Inox 201 (Ni th\u1ea5p, Mn cao):<br \/>\n  &#8211; T\u00f4ng m\u00e0u th\u01b0\u1eddng \u1ea5m h\u01a1n ch\u00fat (h\u01a1i v\u00e0ng nh\u1eb9) so v\u1edbi 304 khi \u0111\u1eb7t c\u1ea1nh nhau d\u01b0\u1edbi \u00e1nh s\u00e1ng tr\u1eafng.<br \/>\n  &#8211; Sau \u0111\u00e1nh b\u00f3ng g\u01b0\u01a1ng, \u0111\u1ed9 b\u00f3ng c\u00f3 th\u1ec3 \u201cg\u1eaft\u201d nh\u01b0ng chi\u1ec1u s\u00e2u ph\u1ea3n x\u1ea1 k\u00e9m BA chu\u1ea9n.<br \/>\n  &#8211; D\u1ea5u hi\u1ec7u ph\u1ee5: h\u00e0ng trang tr\u00ed gi\u00e1 r\u1ebb, \u1ed1ng\/h\u1ed9p m\u1ecfng, tem nh\u00e3n th\u01b0\u1eddng ghi 201\/AISI 201\/ASTM A554 (kh\u00f4ng ph\u1ea3i b\u1eb1ng m\u1eaft, nh\u01b0ng tem l\u00e0 y\u1ebfu t\u1ed1 th\u1ecb gi\u00e1c quan tr\u1ecdng).<br \/>\n&#8211; Inox 304:<br \/>\n  &#8211; T\u00f4ng x\u00e1m l\u1ea1nh, \u201ctrung t\u00ednh\u201d, b\u1ec1 m\u1eb7t 2B m\u1ecbn v\u00e0 \u0111\u1ed3ng \u0111\u1ec1u nh\u1ea5t.<br \/>\n  &#8211; \u1ede ho\u00e0n thi\u1ec7n HL\/No.4, v\u00e2n m\u00e0i th\u1ec3 hi\u1ec7n r\u00f5 nh\u01b0ng \u00edt \u201cnh\u00f2e\u201d khi nh\u00ecn nghi\u00eang.<br \/>\n&#8211; Inox 316\/316L (c\u00f3 Mo):<br \/>\n  &#8211; M\u00e0u c\u00f3 xu h\u01b0\u1edbng \u201cl\u1ea1nh\u201d v\u00e0 h\u01a1i tr\u1ea7m h\u01a1n 304, \u00e1nh ph\u1ea3n x\u1ea1 d\u1ecbu h\u01a1n tr\u00ean c\u00f9ng c\u1ea5p \u0111\u00e1nh b\u00f3ng.<br \/>\n  &#8211; V\u1edbi c\u00f9ng thi\u1ebft k\u1ebf ngo\u00e0i tr\u1eddi ven bi\u1ec3n, 316 gi\u1eef b\u1ec1 m\u1eb7t s\u1ea1ch, \u00edt \u1ed1 tr\u00e0 theo th\u1eddi gian h\u01a1n (d\u1ea5u hi\u1ec7u n\u00e0y c\u1ea7n th\u1eddi gian quan s\u00e1t).<\/p>\n<p>K\u1ebft lu\u1eadn th\u1ef1c h\u00e0nh: b\u1eb1ng m\u1eaft th\u01b0\u1eddng, 201 \u0111\u00f4i khi nh\u1eadn ra nh\u1edd s\u1eafc \u1ea5m v\u00e0 b\u1ec1 m\u1eb7t \u201cg\u1eaft\u201d, 304 \u201ctrung t\u00ednh\u201d, 316 kh\u00f3 t\u00e1ch bi\u1ec7t v\u1edbi 304 t\u1ee9c th\u1eddi. Khi r\u1ee7i ro cao (bi\u1ec3n, h\u00f3a ch\u1ea5t), kh\u00f4ng d\u1ef1a v\u00e0o th\u1ecb gi\u00e1c \u0111\u1ec3 ph\u00e2n lo\u1ea1i 304\/316.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Nhom_ferritic_430\"><\/span>Nh\u00f3m ferritic: 430<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>&#8211; T\u00f4ng x\u00e1m n\u00e2u nh\u1eb9, \u0111\u1ed9 b\u00f3ng th\u1ea5p h\u01a1n 304 \u1edf c\u00f9ng ho\u00e0n thi\u1ec7n.<br \/>\n&#8211; V\u00e2n m\u00e0i th\u01b0\u1eddng \u201cl\u1ed9\u201d h\u01a1n, b\u1ec1 m\u1eb7t c\u1ea3m gi\u00e1c \u201ckh\u00f4\u201d.<br \/>\n&#8211; \u1ee8ng d\u1ee5ng ph\u1ed5 bi\u1ebfn: m\u1eb7t b\u1ebfp, trang tr\u00ed trong nh\u00e0 kh\u00f4 r\u00e1o, \u0111\u1ed3 gia d\u1ee5ng trung c\u1ea5p.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Nhom_martensitic_410420\"><\/span>Nh\u00f3m martensitic: 410\/420<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>&#8211; M\u00e0u t\u1ed1i h\u01a1n, thi\u00ean n\u00e2u x\u00e1m; b\u1ec1 m\u1eb7t sau m\u00e0i d\u1ec5 th\u1ea5y \u201cg\u1ee3n\u201d h\u1ea1t to h\u01a1n.<br \/>\n&#8211; Th\u01b0\u1eddng g\u1eb7p \u1edf dao k\u00e9o, tr\u1ee5c, linh ki\u1ec7n ch\u1ecbu m\u00e0i m\u00f2n; \u00edt d\u00f9ng cho trang tr\u00ed g\u01b0\u01a1ng r\u1ed9ng.<\/p>\n<h2 id=\"toc-3-dau-hieu-be-mat-de-phan-biet-hang-chuan-hang-kem\"><span class=\"ez-toc-section\" id=\"Dau_hieu_be_mat_de_phan_biet_hang_chuan_%E2%80%93_hang_kem\"><\/span>D\u1ea5u hi\u1ec7u b\u1ec1 m\u1eb7t \u0111\u1ec3 ph\u00e2n bi\u1ec7t h\u00e0ng chu\u1ea9n \u2013 h\u00e0ng k\u00e9m<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>&#8211; 2B chu\u1ea9n nh\u00e0 m\u00e1y:<br \/>\n  &#8211; M\u1ecbn, h\u1ea1t \u0111\u1ed3ng \u0111\u1ec1u, \u00e1nh x\u00e1m l\u1ea1nh. N\u1ebfu th\u1ea5y \u201cda cam\u201d, l\u1ed7 kim, ch\u1ea5m \u0111en l\u1eabn t\u1ea1p \u2013 nghi ng\u1edd t\u1ea9y axit\/gia c\u00f4ng l\u1ea1i th\u1ee7 c\u00f4ng.<br \/>\n&#8211; BA th\u1eadt vs \u201cgi\u1ea3 g\u01b0\u01a1ng\u201d:<br \/>\n  &#8211; BA th\u1eadt ph\u1ea3n x\u1ea1 \u0111\u01b0\u1eddng vi\u1ec1n th\u1eb3ng, h\u00ecnh \u1ea3nh \u00edt m\u00e9o, b\u1ec1 m\u1eb7t \u201cph\u1eb3ng quang h\u1ecdc\u201d.<br \/>\n  &#8211; G\u01b0\u01a1ng \u0111\u00e1nh b\u00f3ng t\u1eeb 2B th\u01b0\u1eddng c\u00f3 v\u00f2ng xo\u00e1y, \u1ea3nh m\u00e9o v\u00e0 b\u1ec1 m\u1eb7t d\u1ec5 l\u1ed9 \u201cv\u1ecf cam\u201d.<br \/>\n&#8211; HL\/No.4 chu\u1ea9n:<br \/>\n  &#8211; V\u00e2n th\u1eb3ng li\u00ean t\u1ee5c, m\u1eadt \u0111\u1ed9 \u0111\u1ed3ng \u0111\u1ec1u. H\u00e0ng k\u00e9m: v\u00e2n \u0111\u1ee9t, ch\u1ed3ng l\u1edbp kh\u00f4ng \u0111\u1ec1u, l\u1eabn nhi\u1ec1u x\u01b0\u1edbc ngang.<br \/>\n&#8211; Khuy\u1ebft t\u1eadt b\u1ec1 m\u1eb7t d\u1ec5 th\u1ea5y:<br \/>\n  &#8211; R\u1ed7 li ti, v\u1ebft c\u00e1n \u201clamination\u201d, v\u1ebft k\u00e9o d\u00e0i theo h\u01b0\u1edbng c\u00e1n, v\u1ec7t loang do t\u1ea9y axit kh\u00f4ng \u0111\u1ec1u, m\u00e9p c\u1eaft ch\u00e1y x\u00e9m qu\u00e1 m\u1ee9c.<\/p>\n<h2 id=\"toc-4-quan-sat-tem-nhan-dap-mep-tamong-yeu-to-thi-giac-h\"><span class=\"ez-toc-section\" id=\"Quan_sat_tem_nhan_dap_mep_tamong_yeu_to_thi_giac_hop_le\"><\/span>Quan s\u00e1t tem nh\u00e3n, d\u1eadp m\u00e9p t\u1ea5m\/\u1ed1ng (y\u1ebfu t\u1ed1 th\u1ecb gi\u00e1c h\u1ee3p l\u1ec7)<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>&#8211; T\u1ea5m cu\u1ed9n: m\u00e9p th\u01b0\u1eddng d\u1eadp AISI\/ASTM, m\u00e1c th\u00e9p (304\/316L\u2026), chi\u1ec1u d\u00e0y, Heat No., ti\u00eau chu\u1ea9n (ASTM A240).<br \/>\n&#8211; \u1ed0ng\/h\u1ed9p trang tr\u00ed: in laser d\u1ecdc th\u00e2n (v\u00ed d\u1ee5: ASTM A554 TP304 38.1&#215;1.0 mm).<br \/>\n&#8211; H\u00e0ng k\u00e9m: th\u00f4ng tin in m\u1edd, sai ch\u00ednh t\u1ea3, kh\u00f4ng th\u1ed1ng nh\u1ea5t gi\u1eefa tem b\u00f3 \u2013 tem l\u00e1 \u2013 d\u1eadp m\u00e9p. N\u1ebfu tem kh\u00f4ng kh\u1edbp c\u1ea3m nh\u1eadn b\u1ec1 m\u1eb7t, n\u00ean d\u1eebng h\u00e0ng v\u00e0 y\u00eau c\u1ea7u ch\u1ee9ng ch\u1ec9.<\/p>\n<h2 id=\"toc-5-quy-trinh-5-buoc-phan-biet-inox-bang-mat-tai-xuong\"><span class=\"ez-toc-section\" id=\"Quy_trinh_5_buoc_phan_biet_inox_bang_mat_tai_xuong\"><\/span>Quy tr\u00ecnh 5 b\u01b0\u1edbc ph\u00e2n bi\u1ec7t inox b\u1eb1ng m\u1eaft t\u1ea1i x\u01b0\u1edfng<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>1) Chu\u1ea9n b\u1ecb:<br \/>\n   &#8211; \u0110\u00e8n 5000\u20136500 K; t\u1ea5m n\u1ec1n tr\u1eafng m\u1edd; kh\u0103n s\u1ea1ch; m\u1eabu chu\u1ea9n 304 2B\/BA.<br \/>\n2) L\u00e0m s\u1ea1ch \u0111i\u1ec3m ki\u1ec3m:<br \/>\n   &#8211; L\u1ed9t film t\u1ea1i khu v\u1ef1c quan s\u00e1t; lau d\u1ea7u\/m\u1ee1 \u0111\u1ec3 tr\u00e1nh \u201c\u1ea3o gi\u00e1c\u201d b\u00f3ng.<br \/>\n3) So s\u00e1nh \u0111\u1ed9 b\u00f3ng:<br \/>\n   &#8211; \u0110\u1eb7t m\u1eabu nghi\u00eang 15\u201330\u00b0, quan s\u00e1t \u0111\u1ed9 s\u1eafc n\u00e9t ph\u1ea3n x\u1ea1, \u0111\u1ed9 \u201cs\u00e2u\u201d \u1ea3nh, m\u1ee9c t\u00e1n x\u1ea1.<br \/>\n4) \u0110\u1ecdc b\u1ec1 m\u1eb7t:<br \/>\n   &#8211; T\u00ecm v\u00e2n (HL\/No.4), h\u1ea1t (2B), khuy\u1ebft t\u1eadt (r\u1ed7, qu\u1ea7ng xo\u00e1y, da cam).<br \/>\n5) \u0110\u00e1nh gi\u00e1 m\u00e0u t\u1ed5ng th\u1ec3:<br \/>\n   &#8211; So v\u1edbi m\u1eabu chu\u1ea9n: \u1ea5m h\u01a1n (ng\u1ea3 v\u00e0ng nh\u1eb9) nghi 201; l\u1ea1nh\/trung t\u00ednh 304; r\u1ea5t kh\u00f3 ph\u00e2n ly 304\u2013316 b\u1eb1ng m\u1eaft. Ghi nh\u1eadn tem\/d\u1eadp m\u00e9p \u0111\u1ec3 \u0111\u1ed1i chi\u1ebfu.<\/p>\n<h2 id=\"toc-6-6-tinh-huong-thuc-te-va-cach-xu-ly\"><span class=\"ez-toc-section\" id=\"6_tinh_huong_thuc_te_va_cach_xu_ly\"><\/span>6 t\u00ecnh hu\u1ed1ng th\u1ef1c t\u1ebf v\u00e0 c\u00e1ch x\u1eed l\u00fd<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>&#8211; Nghi t\u1ea5m BA \u201cgi\u1ea3 g\u01b0\u01a1ng\u201d:<br \/>\n  &#8211; Soi c\u1ea1nh th\u01b0\u1edbc th\u00e9p; n\u1ebfu \u0111\u01b0\u1eddng vi\u1ec1n m\u00e9o, c\u00f3 v\u1ecf cam \u2013 nhi\u1ec1u kh\u1ea3 n\u0103ng l\u00e0 \u0111\u00e1nh b\u00f3ng t\u1eeb 2B, kh\u00f4ng ph\u1ea3i BA \u1ee7 s\u00e1ng.<br \/>\n&#8211; Ph\u00e2n bi\u1ec7t \u1ed1ng 201 vs 304 c\u00f9ng b\u00f3ng g\u01b0\u01a1ng:<br \/>\n  &#8211; Nh\u00ecn d\u01b0\u1edbi \u0111\u00e8n tr\u1eafng: 201 th\u01b0\u1eddng \u1ea5m h\u01a1n; ki\u1ec3m v\u00e2n xo\u00e1y (\u0111\u00e1nh b\u00f3ng qu\u00e1 tay); xem in laser m\u00e1c \u2013 n\u1ebfu thi\u1ebfu m\u00e1c\/ti\u00eau chu\u1ea9n, y\u00eau c\u1ea7u ch\u1ee9ng ch\u1ec9 ngay.<br \/>\n&#8211; Ki\u1ec3m 304 vs 316 cho tay v\u1ecbn ngo\u00e0i kh\u01a1i:<br \/>\n  &#8211; B\u1eb1ng m\u1eaft g\u1ea7n nh\u01b0 kh\u00f4ng ch\u1eafc ch\u1eafn; \u01b0u ti\u00ean gi\u1ea5y t\u1edd v\u00e0 ki\u1ec3m XRF. Quan s\u00e1t theo th\u1eddi gian: 304 d\u1ec5 \u1ed1 tr\u00e0 \u1edf v\u00f9ng l\u00e2n c\u1eadn bi\u1ec3n h\u01a1n 316.<br \/>\n&#8211; T\u1ea5m 2B b\u1ecb \u201cda cam\u201d l\u1ed1m \u0111\u1ed1m:<br \/>\n  &#8211; Nghi ng\u1edd t\u1ea9y axit\/gia c\u00f4ng l\u1ea1i; tr\u00e1nh d\u00f9ng cho b\u1ec1 m\u1eb7t nh\u00ecn th\u1ea5y; ch\u1ecdn l\u00f4 kh\u00e1c.<br \/>\n&#8211; HL b\u1ecb l\u1eabn nhi\u1ec1u x\u01b0\u1edbc ngang:<br \/>\n  &#8211; D\u1ea5u hi\u1ec7u ch\u1ea3i l\u1ea1i kh\u00f4ng \u0111\u1ea1t; y\u00eau c\u1ea7u ch\u1ea3i l\u1ea1i ho\u1eb7c \u0111\u1ed5i l\u00f4, v\u00ec x\u01b0\u1edbc ch\u00e9o r\u1ea5t kh\u00f3 \u201cgi\u1ea5u\u201d khi l\u1eafp \u0111\u1eb7t.<br \/>\n&#8211; M\u00e9p c\u1eaft \u0111en, x\u1ec9 ch\u00e1y nhi\u1ec1u:<br \/>\n  &#8211; Kh\u00f4ng k\u1ebft lu\u1eadn m\u00e1c th\u00e9p t\u1eeb \u0111\u00f3, nh\u01b0ng l\u00e0 c\u1ea3nh b\u00e1o quy tr\u00ecnh c\u1eaft\/kh\u00ed kh\u00f4ng chu\u1ea9n; c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0103n m\u00f2n m\u00e9p sau n\u00e0y.<\/p>\n<h2 id=\"toc-7-nhan-biet-som-nguy-co-an-mon-qua-dau-vet-be-mat\"><span class=\"ez-toc-section\" id=\"Nhan_biet_som_nguy_co_an_mon_qua_dau_vet_be_mat\"><\/span>Nh\u1eadn bi\u1ebft s\u1edbm nguy c\u01a1 \u0103n m\u00f2n qua d\u1ea5u v\u1ebft b\u1ec1 m\u1eb7t<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>&#8211; \u1ed0 tr\u00e0 (tea staining) tr\u00ean HL\/No.4 ngo\u00e0i tr\u1eddi \u1ea9m, g\u1ea7n bi\u1ec3n:<br \/>\n  &#8211; Xu\u1ea5t hi\u1ec7n n\u00e2u nh\u1ea1t d\u1ecdc theo v\u00e2n; 304\/201 d\u1ec5 g\u1eb7p h\u01a1n 316. Quan s\u00e1t sau v\u00e0i tu\u1ea7n\u2013th\u00e1ng s\u1eed d\u1ee5ng.<br \/>\n&#8211; \u0110\u1ed1m n\u00e2u \u0111\u1ecf xu\u1ea5t hi\u1ec7n nhanh khi \u0111\u1ec3 ngo\u00e0i tr\u1eddi \u1ea9m:<br \/>\n  &#8211; Kh\u1ea3 n\u0103ng cao l\u00e0 201\/430 ho\u1eb7c b\u1ec1 m\u1eb7t b\u1ecb s\u1eaft b\u00e1m ch\u00e9o (contamination) do gia c\u00f4ng chung v\u1edbi th\u00e9p carbon. L\u00e0m s\u1ea1ch v\u00e0 theo d\u00f5i; n\u1ebfu t\u00e1i ph\u00e1t, xem l\u1ea1i m\u00e1c v\u00e0 quy tr\u00ecnh.<\/p>\n<h2 id=\"toc-8-sai-lam-pho-bien-khi-phan-biet-bang-mat\"><span class=\"ez-toc-section\" id=\"Sai_lam_pho_bien_khi_phan_biet_bang_mat\"><\/span>Sai l\u1ea7m ph\u1ed5 bi\u1ebfn khi ph\u00e2n bi\u1ec7t b\u1eb1ng m\u1eaft<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>&#8211; \u0110\u00e1nh gi\u00e1 d\u01b0\u1edbi \u0111\u00e8n v\u00e0ng \u2192 inox n\u00e0o c\u0169ng \u201c\u1ea5m\u201d h\u01a1n th\u1ef1c t\u1ebf.<br \/>\n&#8211; Ngh\u0129 \u201cb\u00f3ng h\u01a1n = m\u00e1c cao h\u01a1n\u201d \u2192 sai; \u0111\u1ed9 b\u00f3ng l\u00e0 do ho\u00e0n thi\u1ec7n, kh\u00f4ng ph\u1ea3i m\u00e1c th\u00e9p.<br \/>\n&#8211; Kh\u00f4ng l\u1ed9t film, nh\u00ecn qua l\u1edbp PE m\u00e0u \u2192 m\u00e0u s\u1eafc b\u1ecb sai l\u1ec7ch.<br \/>\n&#8211; Nh\u1ea7m l\u1eabn gi\u1eefa m\u00e3 ho\u00e0n thi\u1ec7n (2B\/BA\/HL) v\u1edbi m\u00e1c (201\/304\/316).<\/p>\n<h2 id=\"toc-9-khi-nao-can-kiem-dinh-bo-sung\"><span class=\"ez-toc-section\" id=\"Khi_nao_can_kiem_dinh_bo_sung\"><\/span>Khi n\u00e0o c\u1ea7n ki\u1ec3m \u0111\u1ecbnh b\u1ed5 sung<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>&#8211; H\u1ea1ng m\u1ee5c ven bi\u1ec3n, h\u00f3a ch\u1ea5t, d\u01b0\u1ee3c th\u1ef1c ph\u1ea9m: b\u1eaft bu\u1ed9c x\u00e1c minh m\u00e1c b\u1eb1ng XRF ho\u1eb7c ch\u1ee9ng ch\u1ec9 v\u1eadt li\u1ec7u (MTR).<br \/>\n&#8211; Khi t\u00edn hi\u1ec7u th\u1ecb gi\u00e1c m\u00e2u thu\u1eabn v\u1edbi tem\/d\u1eadp m\u00e9p.<br \/>\n&#8211; Khi nh\u00e0 cung c\u1ea5p kh\u00f4ng th\u1ec3 xu\u1ea5t ch\u1ee9ng ch\u1ec9 theo ASTM A240 (t\u1ea5m), ASTM A554 (\u1ed1ng trang tr\u00ed) ho\u1eb7c ti\u00eau chu\u1ea9n t\u01b0\u01a1ng \u0111\u01b0\u01a1ng.<\/p>\n<h2 id=\"toc-10-tai-lieu-tham-khao\"><span class=\"ez-toc-section\" id=\"Tai_lieu_tham_khao\"><\/span>T\u00e0i li\u1ec7u tham kh\u1ea3o<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>&#8211; ASTM A480\/A480M \u2013 Standard Specification for General Requirements for Flat-Rolled Stainless and Heat-Resisting Steel Plate, Sheet, and Strip (m\u00f4 t\u1ea3 ho\u00e0n thi\u1ec7n 2B, BA, No.1\u2026).<br \/>\n&#8211; ASTM A240\/A240M \u2013 Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and for General Applications.<br \/>\n&#8211; ASTM A554 \u2013 Welded Stainless Steel Mechanical Tubing (\u1ed1ng\/h\u1ed9p trang tr\u00ed).<br \/>\n&#8211; EN 10088 \u2013 Stainless steels \u2013 Part 2\/4 (th\u00e0nh ph\u1ea7n v\u00e0 b\u1ec1 m\u1eb7t theo chu\u1ea9n Ch\u00e2u \u00c2u).<br \/>\n&#8211; Nickel Institute \u2013 Stainless Steel: Selection and Specification; Surface Finishes.<br \/>\n&#8211; Outokumpu \u2013 Stainless Steel Surface Finishes (h\u01b0\u1edbng d\u1eabn k\u1ef9 thu\u1eadt v\u1ec1 2B\/BA\/No.4\/HL).<\/p>\n<h2 id=\"toc-11-ket-luan\"><span class=\"ez-toc-section\" id=\"Ket_luan\"><\/span>K\u1ebft lu\u1eadn<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>&#8211; Ba t\u00edn hi\u1ec7u th\u1ecb gi\u00e1c c\u1ed1t l\u00f5i: \u0111\u1ed9 b\u00f3ng (g\u01b0\u01a1ng \u2013 t\u00e1n x\u1ea1), m\u00e0u s\u1eafc (\u1ea5m\/l\u1ea1nh), v\u00e0 \u0111\u1eb7c tr\u01b0ng b\u1ec1 m\u1eb7t (v\u00e2n, h\u1ea1t, khuy\u1ebft t\u1eadt) cho ph\u00e9p b\u1ea1n s\u00e0ng l\u1ecdc nhanh inox tr\u00ean hi\u1ec7n tr\u01b0\u1eddng.<br \/>\n&#8211; Ghi nh\u1edb m\u00e3 ho\u00e0n thi\u1ec7n (2B, BA, HL\u2026) \u0111\u1ec3 tr\u00e1nh nh\u1ea7m \u201cb\u00f3ng\u201d v\u1edbi \u201cm\u00e1c\u201d. 201 th\u01b0\u1eddng \u1ea5m v\u00e0 \u201cg\u1eaft\u201d h\u01a1n 304; 304 trung t\u00ednh; 316 g\u1ea7n nh\u01b0 kh\u00f4ng th\u1ec3 t\u00e1ch bi\u1ec7t v\u1edbi 304 ch\u1ec9 b\u1eb1ng m\u1eaft.<br \/>\n&#8211; Quan s\u00e1t tem\/d\u1eadp m\u00e9p l\u00e0 b\u01b0\u1edbc th\u1ecb gi\u00e1c h\u1ee3p l\u1ec7 v\u00e0 quan tr\u1ecdng. Trong c\u00e1c \u1ee9ng d\u1ee5ng r\u1ee7i ro, lu\u00f4n x\u00e1c nh\u1eadn b\u1eb1ng ch\u1ee9ng ch\u1ec9\/XRF.<br \/>\nC\u1ea7n t\u01b0 v\u1ea5n ch\u1ecdn \u0111\u00fang m\u00e1c \u2013 \u0111\u00fang ho\u00e0n thi\u1ec7n cho c\u00f4ng tr\u00ecnh c\u1ee7a b\u1ea1n? Li\u00ean h\u1ec7 Inox C\u01b0\u1eddng Th\u1ecbnh \u0111\u1ec3 \u0111\u01b0\u1ee3c khuy\u1ebfn ngh\u1ecb t\u1ed1i \u01b0u v\u00e0 b\u00e1o gi\u00e1 t\u1ed1t nh\u1ea5t. Hotline: 0343.417.281. Email: inoxcongnghiep.cuongthinh@gmail.com<\/p>\n","protected":false},"excerpt":{"rendered":"<p>H\u01b0\u1edbng d\u1eabn ph\u00e2n bi\u1ec7t inox 201\/304\/316 b\u1eb1ng m\u1eaft th\u01b0\u1eddng: nh\u1eadn bi\u1ebft \u0111\u1ed9 b\u00f3ng, m\u00e0u s\u1eafc, v\u00e2n b\u1ec1 m\u1eb7t, m\u00e3 ho\u00e0n thi\u1ec7n 2B\/BA\/HL, d\u1ea5u in m\u00e9p t\u1ea5m. Chu\u1ea9n k\u1ef9 s\u01b0.<\/p>\n","protected":false},"author":7,"featured_media":1053,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[23],"tags":[],"class_list":["post-2407","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\/2407","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=2407"}],"version-history":[{"count":0,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/posts\/2407\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/media\/1053"}],"wp:attachment":[{"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/media?parent=2407"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/categories?post=2407"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/tags?post=2407"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}