{"id":2427,"date":"2026-08-10T12:33:38","date_gmt":"2026-08-10T05:33:38","guid":{"rendered":"https:\/\/inoxcuongthinh.com\/inox-loai-1-vs-loai-2-tai-che-cach-phan-biet-va-rui-ro-tiem-an\/"},"modified":"2026-08-10T12:33:38","modified_gmt":"2026-08-10T05:33:38","slug":"inox-loai-1-vs-loai-2-tai-che-cach-phan-biet-va-rui-ro-tiem-an","status":"publish","type":"post","link":"https:\/\/inoxcuongthinh.com\/inox-loai-1-vs-loai-2-tai-che-cach-phan-biet-va-rui-ro-tiem-an\/","title":{"rendered":"Inox lo\u1ea1i 1 vs lo\u1ea1i 2 (t\u00e1i ch\u1ebf): C\u00e1ch ph\u00e2n bi\u1ec7t v\u00e0 r\u1ee7i ro ti\u1ec1m \u1ea9n"},"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;2427&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;Inox lo\u1ea1i 1 vs lo\u1ea1i 2 (t\u00e1i ch\u1ebf): C\u00e1ch ph\u00e2n bi\u1ec7t v\u00e0 r\u1ee7i ro ti\u1ec1m \u1ea9n&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 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class=\"kksr-stars-active\" style=\"width: 0px;\">\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n    <\/div>\n<\/div>\n                \n\n<div 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\/inox-loai-1-vs-loai-2-tai-che-cach-phan-biet-va-rui-ro-tiem-an\/#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\/inox-loai-1-vs-loai-2-tai-che-cach-phan-biet-va-rui-ro-tiem-an\/#Inox_%E2%80%9Cloai_1%E2%80%9D_va_%E2%80%9Cloai_2%E2%80%9D_hieu_dung_theo_thuc_te_thi_truong_va_tieu_chuan\" >Inox \u201clo\u1ea1i 1\u201d v\u00e0 \u201clo\u1ea1i 2\u201d: hi\u1ec3u \u0111\u00fang theo th\u1ef1c t\u1ebf th\u1ecb tr\u01b0\u1eddng v\u00e0 ti\u00eau chu\u1ea9n<\/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\/inox-loai-1-vs-loai-2-tai-che-cach-phan-biet-va-rui-ro-tiem-an\/#Khac_biet_ky_thuat_cot_loi_thanh_phan_co_tinh_va_kha_nang_chong_an_mon\" >Kh\u00e1c bi\u1ec7t k\u1ef9 thu\u1eadt c\u1ed1t l\u00f5i: th\u00e0nh ph\u1ea7n, c\u01a1 t\u00ednh v\u00e0 kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/inoxcuongthinh.com\/inox-loai-1-vs-loai-2-tai-che-cach-phan-biet-va-rui-ro-tiem-an\/#Thanh_phan_hoa_hoc_tham_chieu_dien_hinh_theo_ASTM_A240JIS_G4304G4305\" >Th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc tham chi\u1ebfu (\u0111i\u1ec3n h\u00ecnh, theo ASTM A240\/JIS G4304\/G4305)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/inoxcuongthinh.com\/inox-loai-1-vs-loai-2-tai-che-cach-phan-biet-va-rui-ro-tiem-an\/#Chi_so_chong_ro_PREN_va_y_nghia\" >Ch\u1ec9 s\u1ed1 ch\u1ed1ng r\u1ed7 (PREN) v\u00e0 \u00fd ngh\u0129a<\/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\/inox-loai-1-vs-loai-2-tai-che-cach-phan-biet-va-rui-ro-tiem-an\/#Co_tinh_tham_chieu_dien_hinh_tam_can_nguoi_2B\" >C\u01a1 t\u00ednh tham chi\u1ebfu (\u0111i\u1ec3n h\u00ecnh, t\u1ea5m c\u00e1n ngu\u1ed9i 2B)<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/inoxcuongthinh.com\/inox-loai-1-vs-loai-2-tai-che-cach-phan-biet-va-rui-ro-tiem-an\/#Nhan_biet_qua_quan_sat_va_kiem_tra_tai_xuong\" >Nh\u1eadn bi\u1ebft qua quan s\u00e1t v\u00e0 ki\u1ec3m tra t\u1ea1i x\u01b0\u1edfng<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/inoxcuongthinh.com\/inox-loai-1-vs-loai-2-tai-che-cach-phan-biet-va-rui-ro-tiem-an\/#Dau_hieu_be_mat_%E2%80%93_bao_goi_%E2%80%93_nhan_mac\" >D\u1ea5u hi\u1ec7u b\u1ec1 m\u1eb7t \u2013 bao g\u00f3i \u2013 nh\u00e3n m\u00e1c<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/inoxcuongthinh.com\/inox-loai-1-vs-loai-2-tai-che-cach-phan-biet-va-rui-ro-tiem-an\/#Quy_trinh_7_buoc_kiem_tra_nhanh_khi_nhan_hang\" >Quy tr\u00ecnh 7 b\u01b0\u1edbc ki\u1ec3m tra nhanh khi nh\u1eadn h\u00e0ng<\/a><\/li><\/ul><\/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\/inox-loai-1-vs-loai-2-tai-che-cach-phan-biet-va-rui-ro-tiem-an\/#Nhung_rui_ro_tiem_an_khi_dung_inox_loai_2_dac_biet_hang_tai_chesai_mac\" >Nh\u1eefng r\u1ee7i ro ti\u1ec1m \u1ea9n khi d\u00f9ng inox lo\u1ea1i 2 (\u0111\u1eb7c bi\u1ec7t h\u00e0ng t\u00e1i ch\u1ebf\/sai m\u00e1c)<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/inoxcuongthinh.com\/inox-loai-1-vs-loai-2-tai-che-cach-phan-biet-va-rui-ro-tiem-an\/#Tinh_nhanh_TCO_vi_sao_%E2%80%9Cre_hoa_dat%E2%80%9D\" >T\u00ednh nhanh TCO: v\u00ec sao \u201cr\u1ebb h\u00f3a \u0111\u1eaft\u201d<\/a><\/li><\/ul><\/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\/inox-loai-1-vs-loai-2-tai-che-cach-phan-biet-va-rui-ro-tiem-an\/#Ung_dung_khi_nao_co_the_dung_%E2%80%9Cloai_2%E2%80%9D_khi_nao_tuyet_doi_tranh\" >\u1ee8ng d\u1ee5ng: khi n\u00e0o c\u00f3 th\u1ec3 d\u00f9ng \u201clo\u1ea1i 2\u201d, khi n\u00e0o tuy\u1ec7t \u0111\u1ed1i tr\u00e1nh<\/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\/inox-loai-1-vs-loai-2-tai-che-cach-phan-biet-va-rui-ro-tiem-an\/#Quy_trinh_mua_hang_an_toan_va_kiem_dinh_chat_luong\" >Quy tr\u00ecnh mua h\u00e0ng an to\u00e0n v\u00e0 ki\u1ec3m \u0111\u1ecbnh ch\u1ea5t l\u01b0\u1ee3ng<\/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\/inox-loai-1-vs-loai-2-tai-che-cach-phan-biet-va-rui-ro-tiem-an\/#Vi_du_thuc_te_tai_mien_Bac\" >V\u00ed d\u1ee5 th\u1ef1c t\u1ebf t\u1ea1i mi\u1ec1n B\u1eafc<\/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\/inox-loai-1-vs-loai-2-tai-che-cach-phan-biet-va-rui-ro-tiem-an\/#Cau_hoi_thuong_gap\" >C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p<\/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\/inox-loai-1-vs-loai-2-tai-che-cach-phan-biet-va-rui-ro-tiem-an\/#Bao_quan_%E2%80%93_gia_cong_de_giu_kha_nang_chong_an_mon\" >B\u1ea3o qu\u1ea3n \u2013 gia c\u00f4ng \u0111\u1ec3 gi\u1eef kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-17\" href=\"https:\/\/inoxcuongthinh.com\/inox-loai-1-vs-loai-2-tai-che-cach-phan-biet-va-rui-ro-tiem-an\/#Nguon_tham_khao\" >Ngu\u1ed3n tham kh\u1ea3o<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-18\" href=\"https:\/\/inoxcuongthinh.com\/inox-loai-1-vs-loai-2-tai-che-cach-phan-biet-va-rui-ro-tiem-an\/#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-inox-loai-1-va-loai-2-hieu-dung-theo-thuc-te-thi-t\">Inox \u201clo\u1ea1i 1\u201d v\u00e0 \u201clo\u1ea1i 2\u201d: hi\u1ec3u \u0111\u00fang theo th\u1ef1c t\u1ebf th\u1ecb tr\u01b0\u1eddng v\u00e0 ti\u00eau chu\u1ea9n<\/a><\/li>\n<li><a href=\"#toc-1-khac-biet-ky-thuat-cot-loi-thanh-phan-co-tinh-va-k\">Kh\u00e1c bi\u1ec7t k\u1ef9 thu\u1eadt c\u1ed1t l\u00f5i: th\u00e0nh ph\u1ea7n, c\u01a1 t\u00ednh v\u00e0 kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n<\/a><\/li>\n<li><a href=\"#toc-2-nhan-biet-qua-quan-sat-va-kiem-tra-tai-xuong\">Nh\u1eadn bi\u1ebft qua quan s\u00e1t v\u00e0 ki\u1ec3m tra t\u1ea1i x\u01b0\u1edfng<\/a><\/li>\n<li><a href=\"#toc-3-nhung-rui-ro-tiem-an-khi-dung-inox-loai-2-dac-biet\">Nh\u1eefng r\u1ee7i ro ti\u1ec1m \u1ea9n khi d\u00f9ng inox lo\u1ea1i 2 (\u0111\u1eb7c bi\u1ec7t h\u00e0ng t\u00e1i ch\u1ebf\/sai m\u00e1c)<\/a><\/li>\n<li><a href=\"#toc-4-ung-dung-khi-nao-co-the-dung-loai-2-khi-nao-tuyet-\">\u1ee8ng d\u1ee5ng: khi n\u00e0o c\u00f3 th\u1ec3 d\u00f9ng \u201clo\u1ea1i 2\u201d, khi n\u00e0o tuy\u1ec7t \u0111\u1ed1i tr\u00e1nh<\/a><\/li>\n<li><a href=\"#toc-5-quy-trinh-mua-hang-an-toan-va-kiem-dinh-chat-luong\">Quy tr\u00ecnh mua h\u00e0ng an to\u00e0n v\u00e0 ki\u1ec3m \u0111\u1ecbnh ch\u1ea5t l\u01b0\u1ee3ng<\/a><\/li>\n<li><a href=\"#toc-6-vi-du-thuc-te-tai-mien-bac\">V\u00ed d\u1ee5 th\u1ef1c t\u1ebf t\u1ea1i mi\u1ec1n B\u1eafc<\/a><\/li>\n<li><a href=\"#toc-7-cau-hoi-thuong-gap\">C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p<\/a><\/li>\n<li><a href=\"#toc-8-bao-quan-gia-cong-de-giu-kha-nang-chong-an-mon\">B\u1ea3o qu\u1ea3n \u2013 gia c\u00f4ng \u0111\u1ec3 gi\u1eef kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n<\/a><\/li>\n<li><a href=\"#toc-9-nguon-tham-khao\">Ngu\u1ed3n tham kh\u1ea3o<\/a><\/li>\n<li><a href=\"#toc-10-ket-luan\">K\u1ebft lu\u1eadn<\/a><\/li>\n<\/ul>\n<\/div>\n<p>Vi\u1ec7c nh\u1ea7m l\u1eabn gi\u1eefa inox lo\u1ea1i 1 v\u00e0 lo\u1ea1i 2 (h\u00e0ng t\u00e1i ch\u1ebf\/second) l\u00e0 nguy\u00ean nh\u00e2n h\u00e0ng \u0111\u1ea7u g\u00e2y r\u1ec9 s\u00e9t s\u1edbm, n\u1ee9t m\u1ed1i h\u00e0n v\u00e0 \u0111\u1ed9i chi ph\u00ed b\u1ea3o h\u00e0nh trong c\u00e1c d\u1ef1 \u00e1n c\u01a1 kh\u00ed \u2013 c\u00f4ng nghi\u1ec7p. B\u00e0i vi\u1ebft n\u00e0y t\u1eadp trung l\u00e0m r\u00f5 c\u00e1ch ph\u00e2n bi\u1ec7t th\u1ef1c t\u1ebf ngo\u00e0i hi\u1ec7n tr\u01b0\u1eddng, ti\u00eau ch\u00ed k\u1ef9 thu\u1eadt theo ti\u00eau chu\u1ea9n qu\u1ed1c t\u1ebf, c\u00f9ng nh\u1eefng r\u1ee7i ro ti\u1ec1m \u1ea9n n\u1ebfu ch\u1ecdn sai v\u1eadt li\u1ec7u. \u0110\u00e2y c\u0169ng l\u00e0 m\u1ed9t m\u1ea3nh gh\u00e9p quan tr\u1ecdng trong b\u1ee9c tranh l\u1edbn v\u1ec1 ph\u00e2n bi\u1ec7t v\u00e0 ki\u1ec3m \u0111\u1ecbnh ch\u1ea5t l\u01b0\u1ee3ng inox tr\u00ean th\u1ecb tr\u01b0\u1eddng.<\/p>\n<h2 id=\"toc-0-inox-loai-1-va-loai-2-hieu-dung-theo-thuc-te-thi-t\"><span class=\"ez-toc-section\" id=\"Inox_%E2%80%9Cloai_1%E2%80%9D_va_%E2%80%9Cloai_2%E2%80%9D_hieu_dung_theo_thuc_te_thi_truong_va_tieu_chuan\"><\/span>Inox \u201clo\u1ea1i 1\u201d v\u00e0 \u201clo\u1ea1i 2\u201d: hi\u1ec3u \u0111\u00fang theo th\u1ef1c t\u1ebf th\u1ecb tr\u01b0\u1eddng v\u00e0 ti\u00eau chu\u1ea9n<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>&#8211; Inox lo\u1ea1i 1 (prime, ch\u00ednh ph\u1ea9m): S\u1ea3n xu\u1ea5t t\u1eeb ph\u00f4i \u0111\u1ea1t chu\u1ea9n, th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc \u0111\u00fang m\u00e1c theo ASTM\/JIS\/EN; ch\u1ee9ng ch\u1ec9 MTC \u0111\u1ea7y \u0111\u1ee7; b\u1ec1 m\u1eb7t \u2013 \u0111\u1ed9 d\u00e0y \u2013 dung sai \u0111\u1ea1t ASTM A480\/JIS G4304\/G4305; \u0111\u00f3ng g\u00f3i \u2013 nh\u00e3n nh\u1eadn di\u1ec7n r\u00f5 heat number, coil\/lot.<br \/>\n&#8211; Inox lo\u1ea1i 2 tr\u00ean th\u1ecb tr\u01b0\u1eddng Vi\u1ec7t Nam th\u01b0\u1eddng g\u1ed3m hai nh\u00f3m kh\u00e1c nhau:<br \/>\n  1) H\u00e0ng second\/ch\u1ecdn l\u1ecdc: h\u00f3a h\u1ecdc v\u00e0 m\u00e1c \u0111\u00fang nh\u01b0ng c\u00f3 l\u1ed7i b\u1ec1 m\u1eb7t, tr\u1ea7y x\u01b0\u1edbc, cong v\u00eanh, qu\u00e1\/thi\u1ebfu dung sai\u2026 Gi\u00e1 th\u1ea5p h\u01a1n; r\u1ee7i ro ch\u1ee7 y\u1ebfu v\u1ec1 th\u1ea9m m\u1ef9, gia c\u00f4ng.<br \/>\n  2) H\u00e0ng t\u00e1i ch\u1ebf\/pha m\u00e1c: n\u1ea5u l\u1ea1i t\u1eeb ph\u1ebf, pha tr\u1ed9n 201\u2013304\u2013430 ho\u1eb7c sai th\u00e0nh ph\u1ea7n Ni\/Cr\/Mo; \u0111\u00f4i khi m\u1ea1\/ph\u1ee7 \u0111\u1ec3 \u201c\u0111\u1eb9p b\u1ec1 m\u1eb7t\u201d. R\u1ee7i ro nghi\u00eam tr\u1ecdng: \u0103n m\u00f2n s\u1edbm, k\u00e9m h\u00e0n, kh\u00f4ng \u0111\u1ea1t v\u1ec7 sinh \u2013 an to\u00e0n.<\/p>\n<p>\u0110i\u1ec3m m\u1ea5u ch\u1ed1t: \u201cLo\u1ea1i 2\u201d kh\u00f4ng ph\u1ea3i l\u00fac n\u00e0o c\u0169ng v\u00f4 d\u1ee5ng, nh\u01b0ng n\u1ebfu l\u00e0 h\u00e0ng t\u00e1i ch\u1ebf\/sai m\u00e1c th\u00ec kh\u00f4ng th\u1ec3 thay th\u1ebf \u201clo\u1ea1i 1\u201d trong m\u00f4i tr\u01b0\u1eddng \u0103n m\u00f2n, ch\u1ecbu l\u1ef1c, hay y\u00eau c\u1ea7u an to\u00e0n \u2013 v\u1ec7 sinh.<\/p>\n<h2 id=\"toc-1-khac-biet-ky-thuat-cot-loi-thanh-phan-co-tinh-va-k\"><span class=\"ez-toc-section\" id=\"Khac_biet_ky_thuat_cot_loi_thanh_phan_co_tinh_va_kha_nang_chong_an_mon\"><\/span>Kh\u00e1c bi\u1ec7t k\u1ef9 thu\u1eadt c\u1ed1t l\u00f5i: th\u00e0nh ph\u1ea7n, c\u01a1 t\u00ednh v\u00e0 kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><span class=\"ez-toc-section\" id=\"Thanh_phan_hoa_hoc_tham_chieu_dien_hinh_theo_ASTM_A240JIS_G4304G4305\"><\/span>Th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc tham chi\u1ebfu (\u0111i\u1ec3n h\u00ecnh, theo ASTM A240\/JIS G4304\/G4305)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>&#8211; 304 (AISI 304): Cr 18.0\u201320.0%, Ni 8.0\u201310.5%, C \u22640.08%. M\u00e1c ph\u1ed5 bi\u1ebfn cho th\u1ef1c ph\u1ea9m, k\u1ebft c\u1ea5u nh\u1eb9, m\u00f4i tr\u01b0\u1eddng \u0111\u00f4 th\u1ecb.<br \/>\n&#8211; 201 (AISI 201): Cr 16.0\u201318.0%, Ni 3.5\u20135.5%, Mn 5.5\u20137.5%, C \u22640.15%. Chi ph\u00ed th\u1ea5p h\u01a1n, ch\u1ed1ng \u0103n m\u00f2n k\u00e9m h\u01a1n 304, d\u1ec5 nhi\u1ec5m t\u1eeb sau gia c\u00f4ng.<br \/>\n&#8211; 316 (AISI 316): Cr 16.0\u201318.0%, Ni 10.0\u201314.0%, Mo 2.0\u20133.0%, C \u22640.08%. Ch\u1ed1ng r\u1ed7 pitting t\u1ed1t h\u01a1n 304, d\u00f9ng cho n\u01b0\u1edbc bi\u1ec3n nh\u1eb9, h\u00f3a ch\u1ea5t.<br \/>\n&#8211; 430 (AISI 430, ferritic): Cr 16.0\u201318.0%, Ni r\u1ea5t th\u1ea5p, C \u22640.12%. H\u00fat nam ch\u00e2m, ch\u1ecbu \u0103n m\u00f2n k\u00e9m h\u01a1n austenitic.<\/p>\n<p>H\u00e0ng t\u00e1i ch\u1ebf th\u01b0\u1eddng thi\u1ebfu Ni ho\u1eb7c Mo so v\u1edbi y\u00eau c\u1ea7u; \u0111\u00f4i khi n\u00e2ng Mn \u0111\u1ec3 b\u00f9 nh\u01b0ng kh\u00f4ng th\u1ec3 thay th\u1ebf vai tr\u00f2 c\u1ee7a Ni\/Mo trong ch\u1ed1ng \u0103n m\u00f2n v\u00e0 \u1ed5n \u0111\u1ecbnh austenite.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Chi_so_chong_ro_PREN_va_y_nghia\"><\/span>Ch\u1ec9 s\u1ed1 ch\u1ed1ng r\u1ed7 (PREN) v\u00e0 \u00fd ngh\u0129a<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>&#8211; C\u00f4ng th\u1ee9c tham kh\u1ea3o: PREN \u2248 %Cr + 3.3\u00d7%Mo + 16\u00d7%N.<br \/>\n&#8211; 304 \u0111i\u1ec3n h\u00ecnh: PREN ~18\u201319; 316: ~23\u201324; 201: th\u1ea5p h\u01a1n \u0111\u00e1ng k\u1ec3 do thi\u1ebfu Mo v\u00e0 N th\u1ea5p.<br \/>\n&#8211; H\u00e0ng \u201c304\u201d t\u00e1i ch\u1ebf thi\u1ebfu Ni\/Mo th\u01b0\u1eddng c\u00f3 PREN th\u1ef1c t\u1ebf th\u1ea5p, r\u1ee7i ro r\u1ed7 s\u1edbm t\u1ea1i m\u1ed1i h\u00e0n, v\u1ebft x\u01b0\u1edbc, v\u00f9ng l\u1eafng mu\u1ed1i.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Co_tinh_tham_chieu_dien_hinh_tam_can_nguoi_2B\"><\/span>C\u01a1 t\u00ednh tham chi\u1ebfu (\u0111i\u1ec3n h\u00ecnh, t\u1ea5m c\u00e1n ngu\u1ed9i 2B)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>&#8211; 304: Rp0.2 ~205 MPa, Rm ~515\u2013620 MPa, \u0111\u1ed9 gi\u00e3n d\u00e0i ~40% (ASTM A240\/A480).<br \/>\n&#8211; 201: Rp0.2 th\u01b0\u1eddng cao h\u01a1n (275\u2013380 MPa) nh\u01b0ng gi\u00f2n h\u01a1n \u1edf h\u00e0n, bi\u1ebfn c\u1ee9ng nhanh; kh\u00f4ng b\u00f9 \u0111\u01b0\u1ee3c nh\u01b0\u1ee3c \u0111i\u1ec3m \u0103n m\u00f2n.<br \/>\n&#8211; 430: Rp0.2 ~205 MPa, Rm ~450\u2013600 MPa; gi\u00f2n h\u01a1n khi h\u00e0n; d\u1ec5 nhi\u1ec5m t\u1eeb.<\/p>\n<p>H\u00e0ng t\u00e1i ch\u1ebf kh\u00f4ng \u1ed5n \u0111\u1ecbnh th\u00e0nh ph\u1ea7n d\u1eabn t\u1edbi c\u01a1 t\u00ednh dao \u0111\u1ed9ng l\u1edbn, kh\u00f3 d\u1ef1 b\u00e1o trong ch\u1ea5n, k\u00e9o, d\u1eadp s\u00e2u.<\/p>\n<h2 id=\"toc-2-nhan-biet-qua-quan-sat-va-kiem-tra-tai-xuong\"><span class=\"ez-toc-section\" id=\"Nhan_biet_qua_quan_sat_va_kiem_tra_tai_xuong\"><\/span>Nh\u1eadn bi\u1ebft qua quan s\u00e1t v\u00e0 ki\u1ec3m tra t\u1ea1i x\u01b0\u1edfng<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><span class=\"ez-toc-section\" id=\"Dau_hieu_be_mat_%E2%80%93_bao_goi_%E2%80%93_nhan_mac\"><\/span>D\u1ea5u hi\u1ec7u b\u1ec1 m\u1eb7t \u2013 bao g\u00f3i \u2013 nh\u00e3n m\u00e1c<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>&#8211; B\u1ec1 m\u1eb7t: 2B chu\u1ea9n c\u00f3 \u00e1nh x\u00e1m m\u1ecbn \u0111\u1ed3ng \u0111\u1ec1u; BA b\u00f3ng nh\u01b0 g\u01b0\u01a1ng; No.4\/HL v\u00e2n ch\u1ea3i \u0111\u1ec1u. H\u00e0ng t\u00e1i ch\u1ebf d\u1ec5 c\u00f3 v\u1ebft r\u1ed7 kim, \u0111\u1ed1m \u201corange peel\u201d, m\u1ed1c d\u1ea7u, s\u1ecdc c\u00e1n kh\u00f4ng \u0111\u1ec1u.<br \/>\n&#8211; M\u00e9p \u2013 ph\u1eb3ng: Lo\u1ea1i 1 m\u00e9p c\u1eaft\/SLITTER \u0111\u1ec1u, cong v\u00eanh trong gi\u1edbi h\u1ea1n ASTM A480; lo\u1ea1i 2 d\u1ec5 \u201cd\u1ee3n s\u00f3ng\u201d, m\u00e9o m\u00e9p, sai \u0111\u1ed9 ph\u1eb3ng.<br \/>\n&#8211; Nh\u00e3n: Ghi r\u00f5 m\u00e1c th\u00e9p, ti\u00eau chu\u1ea9n (ASTM\/JIS\/EN), \u0111\u1ed9 d\u00e0y, b\u1ec1 m\u1eb7t, heat\/lot number, nh\u00e0 m\u00e1y. H\u00e0ng tr\u00f4i n\u1ed5i th\u01b0\u1eddng m\u1eadp m\u1edd ho\u1eb7c d\u00e1n nh\u00e3n r\u1eddi r\u1ea1c, thi\u1ebfu heat number truy xu\u1ea5t.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Quy_trinh_7_buoc_kiem_tra_nhanh_khi_nhan_hang\"><\/span>Quy tr\u00ecnh 7 b\u01b0\u1edbc ki\u1ec3m tra nhanh khi nh\u1eadn h\u00e0ng<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>1) Ki\u1ec3m tra h\u1ed3 s\u01a1: Y\u00eau c\u1ea7u MTC (Mill Test Certificate) tr\u00f9ng heat\/lot tr\u00ean bao b\u00ec \u2013 b\u1ec1 m\u1eb7t. \u0110\u1ed1i chi\u1ebfu ti\u00eau chu\u1ea9n \u00e1p d\u1ee5ng (ASTM A240\/A480, JIS G4304\/G4305).<br \/>\n2) \u0110o chi\u1ec1u d\u00e0y v\u00e0 dung sai: D\u00f9ng th\u01b0\u1edbc panme\/si\u00eau \u00e2m; so v\u1edbi dung sai cam k\u1ebft (v\u00ed d\u1ee5 ASTM A480).<br \/>\n3) Quan s\u00e1t b\u1ec1 m\u1eb7t d\u01b0\u1edbi \u00e1nh s\u00e1ng tr\u1eafng: T\u00ecm r\u1ed7 kim, x\u01b0\u1edbc s\u00e2u, v\u1ec7t c\u00e1n, m\u1ed1c d\u1ea7u; ghi nh\u1eadn t\u1ef7 l\u1ec7 khuy\u1ebft t\u1eadt.<br \/>\n4) Th\u1eed nam ch\u00e2m: 304\/316 m\u1edbi th\u01b0\u1eddng r\u1ea5t \u00edt h\u00fat; 201\/430 h\u00fat m\u1ea1nh h\u01a1n, 304 b\u1ecb bi\u1ebfn c\u1ee9ng c\u0169ng c\u00f3 th\u1ec3 h\u01a1i h\u00fat. \u0110\u00e2y ch\u1ec9 l\u00e0 ch\u1ec9 b\u00e1o s\u01a1 b\u1ed9, kh\u00f4ng k\u1ebft lu\u1eadn m\u00e1c.<br \/>\n5) PMI b\u1eb1ng XRF c\u1ea7m tay: \u0110o Cr, Ni, Mo, Mn. \u0110\u00e2y l\u00e0 ph\u01b0\u01a1ng ph\u00e1p \u0111\u00e1ng tin c\u1eady \u0111\u1ec3 x\u00e1c nh\u1eadn m\u00e1c v\u00e0 ph\u00e1t hi\u1ec7n \u201cthi\u1ebfu Ni\/thi\u1ebfu Mo\u201d.<br \/>\n6) Th\u1eed h\u00f3a ch\u1ea5t ch\u1ecdn l\u1ecdc:<br \/>\n   &#8211; Moly-drop test \u0111\u1ec3 ph\u00e2n bi\u1ec7t 316 (c\u00f3 Mo) v\u00e0 304\/201.<br \/>\n   &#8211; Test Ni b\u1eb1ng thu\u1ed1c th\u1eed dimethylglyoxime (DMG): m\u00e0u h\u1ed3ng\/\u0111\u1ecf cho th\u1ea5y Ni \u0111\u1ee7 cao; h\u1ed7 tr\u1ee3 ph\u00e2n bi\u1ec7t 304 (~8\u201310.5% Ni) v\u1edbi 201 (~3.5\u20135.5% Ni).<br \/>\n   &#8211; Copper sulfate test (ASTM A380) \u0111\u1ec3 ph\u00e1t hi\u1ec7n nhi\u1ec5m th\u00e9p cacbon: n\u1ebfu xu\u1ea5t hi\u1ec7n l\u1edbp \u0111\u1ed3ng \u0111\u1ecf b\u00e1m, b\u1ec1 m\u1eb7t c\u00f3 s\u1eaft t\u1ef1 do\/\u00f4 nhi\u1ec5m.<br \/>\n7) H\u00e0n th\u1eed \u2013 \u0103n m\u00f2n \u0111i\u1ec3m: H\u00e0n m\u1ed9t m\u1ed1i ng\u1eafn, l\u00e0m s\u1ea1ch, phun s\u01b0\u01a1ng n\u01b0\u1edbc mu\u1ed1i 5% 24\u201348 gi\u1edd; r\u1ed7 m\u00e9p h\u00e0n l\u00e0 t\u00edn hi\u1ec7u c\u1ea3nh b\u00e1o v\u1eadt li\u1ec7u k\u00e9m ho\u1eb7c l\u00e0m s\u1ea1ch sau h\u00e0n ch\u01b0a \u0111\u00fang.<\/p>\n<p>L\u01b0u \u00fd an to\u00e0n khi d\u00f9ng h\u00f3a ch\u1ea5t; \u01b0u ti\u00ean PMI\/XRF cho k\u1ebft qu\u1ea3 \u0111\u1ecbnh l\u01b0\u1ee3ng.<\/p>\n<h2 id=\"toc-3-nhung-rui-ro-tiem-an-khi-dung-inox-loai-2-dac-biet\"><span class=\"ez-toc-section\" id=\"Nhung_rui_ro_tiem_an_khi_dung_inox_loai_2_dac_biet_hang_tai_chesai_mac\"><\/span>Nh\u1eefng r\u1ee7i ro ti\u1ec1m \u1ea9n khi d\u00f9ng inox lo\u1ea1i 2 (\u0111\u1eb7c bi\u1ec7t h\u00e0ng t\u00e1i ch\u1ebf\/sai m\u00e1c)<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>&#8211; \u0102n m\u00f2n r\u1ed7 v\u00e0 r\u1ea1n n\u1ee9t \u1ee9ng su\u1ea5t s\u1edbm: Thi\u1ebfu Ni\/Mo l\u00e0m gi\u1ea3m kh\u1ea3 n\u0103ng th\u1ee5 \u0111\u1ed9ng h\u00f3a; r\u1ed7 xu\u1ea5t hi\u1ec7n t\u1ea1i v\u00f9ng h\u00e0n\/v\u1ebft x\u01b0\u1edbc ch\u1ec9 sau v\u00e0i tu\u1ea7n trong m\u00f4i tr\u01b0\u1eddng chloride.<br \/>\n&#8211; M\u1ed1i h\u00e0n k\u00e9m: T\u1ea1p ch\u1ea5t v\u00e0 th\u00e0nh ph\u1ea7n kh\u00f4ng \u1ed5n \u0111\u1ecbnh g\u00e2y n\u1ee9t n\u00f3ng, r\u1ed7 h\u00e0n; ph\u1ea3i h\u00e0n ch\u1eadm, ti\u00eau hao d\u00e2y\/kh\u00ed t\u0103ng, chi ph\u00ed s\u1eeda cao.<br \/>\n&#8211; Sai s\u1ed1 \u0111\u1ed9 d\u00e0y \u2013 kh\u00f4ng \u0111\u1ed3ng \u0111\u1ec1u c\u01a1 t\u00ednh: L\u00e0m h\u1ecfng khu\u00f4n d\u1eadp, bi\u1ebfn d\u1ea1ng kh\u00f4ng l\u01b0\u1eddng tr\u01b0\u1edbc, t\u1ef7 l\u1ec7 ph\u1ebf ph\u1ea9m cao.<br \/>\n&#8211; Kh\u00f4ng \u0111\u1ea1t y\u00eau c\u1ea7u v\u1ec7 sinh \u2013 th\u1ef1c ph\u1ea9m: B\u1ec1 m\u1eb7t x\u1ed1p\/r\u1ed7 gi\u1eef b\u1ea9n, vi sinh; r\u1ee7i ro b\u1ecb lo\u1ea1i khi th\u1ea9m tra HACCP, ISO 22000.<br \/>\n&#8211; Kh\u00f4ng tu\u00e2n chu\u1ea9n \u2013 ph\u00e1p l\u00fd: H\u1ee3p \u0111\u1ed3ng vi\u1ec7n d\u1eabn ASTM\/JIS c\u00f3 th\u1ec3 b\u1ecb t\u1eeb ch\u1ed1i nghi\u1ec7m thu; ph\u00e1t sinh tranh ch\u1ea5p.<br \/>\n&#8211; T\u1ed5n th\u1ea5t v\u00f2ng \u0111\u1eddi (TCO): Ti\u1ebft ki\u1ec7m 5\u201315% gi\u00e1 v\u1eadt li\u1ec7u nh\u01b0ng chi ph\u00ed b\u1ea3o tr\u00ec, d\u1eebng m\u00e1y, thay th\u1ebf c\u00f3 th\u1ec3 \u0111\u1ed9i 30\u2013200% sau 1\u20132 n\u0103m.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Tinh_nhanh_TCO_vi_sao_%E2%80%9Cre_hoa_dat%E2%80%9D\"><\/span>T\u00ednh nhanh TCO: v\u00ec sao \u201cr\u1ebb h\u00f3a \u0111\u1eaft\u201d<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Gi\u1ea3 s\u1eed:<br \/>\n&#8211; Ph ph\u01b0\u01a1ng \u00e1n A (lo\u1ea1i 1 \u2013 304): v\u1eadt li\u1ec7u 100 tri\u1ec7u; tu\u1ed5i th\u1ecd 5 n\u0103m; b\u1ea3o tr\u00ec 10 tri\u1ec7u.<br \/>\n&#8211; Ph ph\u01b0\u01a1ng \u00e1n B (lo\u1ea1i 2 t\u00e1i ch\u1ebf): v\u1eadt li\u1ec7u 90 tri\u1ec7u (-10%); sau 12\u201318 th\u00e1ng r\u1ec9 s\u00e9t, ph\u1ea3i s\u1eeda\/\u0111\u1ed5i 1 l\u1ea7n, chi ph\u00ed 40 tri\u1ec7u + 2 ng\u00e0y d\u1eebng m\u00e1y (t\u1ed5n th\u1ea5t 20 tri\u1ec7u).<br \/>\n&#8211; TCO 3 n\u0103m:<br \/>\n  &#8211; A \u2248 100 + 6 (b\u1ea3o tr\u00ec 3 n\u0103m) = 106 tri\u1ec7u.<br \/>\n  &#8211; B \u2248 90 + 40 + 20 = 150 tri\u1ec7u.<br \/>\nCh\u00eanh l\u1ec7ch: B \u201cr\u1ebb\u201d ban \u0111\u1ea7u nh\u01b0ng t\u1ed1n th\u00eam ~41% trong 3 n\u0103m.<\/p>\n<h2 id=\"toc-4-ung-dung-khi-nao-co-the-dung-loai-2-khi-nao-tuyet-\"><span class=\"ez-toc-section\" id=\"Ung_dung_khi_nao_co_the_dung_%E2%80%9Cloai_2%E2%80%9D_khi_nao_tuyet_doi_tranh\"><\/span>\u1ee8ng d\u1ee5ng: khi n\u00e0o c\u00f3 th\u1ec3 d\u00f9ng \u201clo\u1ea1i 2\u201d, khi n\u00e0o tuy\u1ec7t \u0111\u1ed1i tr\u00e1nh<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>&#8211; C\u00f3 th\u1ec3 c\u00e2n nh\u1eafc \u201clo\u1ea1i 2 \u2013 second, \u0111\u00fang m\u00e1c\u201d (ch\u1ec9 l\u1ed7i b\u1ec1 m\u1eb7t) cho: \u0111\u1ed3 g\u00e1, khung \u0111\u1ee1 trong nh\u00e0 kh\u00f4, \u1ed1p trang tr\u00ed n\u1ed9i th\u1ea5t, \u1ed1ng gi\u00f3 trong nh\u00e0, chi ti\u1ebft kh\u00f4ng th\u1ea5y tr\u1ef1c di\u1ec7n, kh\u00f4ng ti\u1ebfp x\u00fac h\u00f3a ch\u1ea5t\/th\u1ef1c ph\u1ea9m.<br \/>\n&#8211; Tr\u00e1nh tuy\u1ec7t \u0111\u1ed1i h\u00e0ng t\u00e1i ch\u1ebf\/sai m\u00e1c trong: b\u1ed3n\/b\u1ec3 th\u1ef1c ph\u1ea9m, \u0111\u01b0\u1eddng \u1ed1ng CIP, thi\u1ebft b\u1ecb y t\u1ebf, m\u00f4i tr\u01b0\u1eddng ven bi\u1ec3n\/n\u01b0\u1edbc m\u1eb7n, h\u1ec7 th\u1ed1ng x\u1eed l\u00fd n\u01b0\u1edbc, k\u1ebft c\u1ea5u ch\u1ecbu l\u1ef1c\/h\u00e0n nhi\u1ec1u, n\u1ed3i h\u01a1i\/\u00e1p l\u1ef1c, c\u00f4ng tr\u00ecnh ngo\u00e0i tr\u1eddi c\u00f3 m\u01b0a axit\/b\u1ee5i mu\u1ed1i.<\/p>\n<h2 id=\"toc-5-quy-trinh-mua-hang-an-toan-va-kiem-dinh-chat-luong\"><span class=\"ez-toc-section\" id=\"Quy_trinh_mua_hang_an_toan_va_kiem_dinh_chat_luong\"><\/span>Quy tr\u00ecnh mua h\u00e0ng an to\u00e0n v\u00e0 ki\u1ec3m \u0111\u1ecbnh ch\u1ea5t l\u01b0\u1ee3ng<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>&#8211; Ti\u1ec1n th\u1ea9m \u0111\u1ecbnh nh\u00e0 cung c\u1ea5p: Ki\u1ec3m tra n\u0103ng l\u1ef1c, xu\u1ea5t x\u1ee9 nh\u00e0 m\u00e1y, h\u1ec7 th\u1ed1ng QC, kh\u1ea3 n\u0103ng cung c\u1ea5p MTC v\u00e0 truy xu\u1ea5t heat\/lot.<br \/>\n&#8211; R\u00e0ng bu\u1ed9c k\u1ef9 thu\u1eadt tr\u00ean PO:<br \/>\n  &#8211; Ghi m\u00e1c th\u00e9p (v\u00ed d\u1ee5: ASTM A240 Type 304), ti\u00eau chu\u1ea9n dung sai (ASTM A480), \u0111\u1ed9 d\u00e0y danh ngh\u0129a v\u00e0 dung sai, b\u1ec1 m\u1eb7t (2B\/BA\/No.4\/HL), tr\u1ea1ng th\u00e1i m\u00e9p (mill\/slit), \u0111\u1ed9 ph\u1eb3ng t\u1ed1i \u0111a, \u0111\u1ed9 c\u1ee9ng.<br \/>\n  &#8211; Y\u00eau c\u1ea7u MTC 3.1 k\u00e8m th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc v\u00e0 c\u01a1 t\u00ednh; ghi r\u00f5 heat number tr\u00ean t\u1ea5m\/cu\u1ed9n.<br \/>\n  &#8211; \u0110i\u1ec1u kho\u1ea3n PMI t\u1ea1i ch\u1ed7 tr\u01b0\u1edbc khi nh\u1eadp kho; quy\u1ec1n t\u1eeb ch\u1ed1i n\u1ebfu l\u1ec7ch h\u00f3a h\u1ecdc.<br \/>\n&#8211; Ki\u1ec3m tra nh\u1eadn h\u00e0ng: L\u1ea5y m\u1eabu theo AQL; \u0111o \u0111\u1ed9 d\u00e0y, quan s\u00e1t b\u1ec1 m\u1eb7t, th\u1eed nam ch\u00e2m; PMI XRF tr\u00ean m\u1ed7i heat\/lot; l\u1eadp bi\u00ean b\u1ea3n k\u00e8m \u1ea3nh.<br \/>\n&#8211; Sau gia c\u00f4ng: T\u1ea9y g\u1ec9 \u2013 th\u1ee5 \u0111\u1ed9ng (ASTM A380\/A967), v\u1ec7 sinh b\u1ec1 m\u1eb7t; ki\u1ec3m tra r\u1ed7 t\u1ea1i m\u1ed1i h\u00e0n tr\u01b0\u1edbc b\u00e0n giao.<\/p>\n<h2 id=\"toc-6-vi-du-thuc-te-tai-mien-bac\"><span class=\"ez-toc-section\" id=\"Vi_du_thuc_te_tai_mien_Bac\"><\/span>V\u00ed d\u1ee5 th\u1ef1c t\u1ebf t\u1ea1i mi\u1ec1n B\u1eafc<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>M\u1ed9t x\u01b0\u1edfng ch\u1ebf t\u1ea1o b\u1ed3n tr\u1ed9n th\u1ef1c ph\u1ea9m t\u1ea1i H\u00e0 N\u1ed9i mua \u201c304 lo\u1ea1i 2 gi\u00e1 t\u1ed1t\u201d. Sau 3 th\u00e1ng v\u1eadn h\u00e0nh v\u1edbi n\u01b0\u1edbc mu\u1ed1i 2\u20133%, b\u1ed3n xu\u1ea5t hi\u1ec7n r\u1ed7 quanh m\u1ed1i h\u00e0n v\u00e0 v\u00f9ng k\u1eb9p g\u00e1. PMI cho th\u1ea5y Ni ch\u1ec9 ~5.1%, kh\u00f4ng \u0111\u1ea1t 304. K\u1ebft qu\u1ea3: ph\u1ea3i thay m\u1edbi ph\u1ea7n v\u1ecf, d\u1eebng d\u00e2y chuy\u1ec1n 4 ng\u00e0y. Chi ph\u00ed kh\u1eafc ph\u1ee5c v\u01b0\u1ee3t 1.6 l\u1ea7n ph\u1ea7n \u201cti\u1ebft ki\u1ec7m\u201d ban \u0111\u1ea7u.<\/p>\n<h2 id=\"toc-7-cau-hoi-thuong-gap\"><span class=\"ez-toc-section\" id=\"Cau_hoi_thuong_gap\"><\/span>C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>&#8211; Lo\u1ea1i 2 c\u00f3 ph\u1ea3i lu\u00f4n k\u00e9m?<br \/>\n  &#8211; Kh\u00f4ng. \u201cSecond\u201d do l\u1ed7i b\u1ec1 m\u1eb7t nh\u01b0ng \u0111\u00fang m\u00e1c v\u1eabn d\u00f9ng \u0111\u01b0\u1ee3c cho m\u1ee5c \u0111\u00edch phi quan tr\u1ecdng. Nguy hi\u1ec3m l\u00e0 lo\u1ea1i 2 t\u00e1i ch\u1ebf\/sai m\u00e1c.<br \/>\n&#8211; C\u00f3 ph\u00e2n bi\u1ec7t 201 v\u00e0 304 b\u1eb1ng m\u1eaft th\u01b0\u1eddng?<br \/>\n  &#8211; H\u1ea7u nh\u01b0 kh\u00f4ng \u0111\u00e1ng tin. C\u1ea7n PMI ho\u1eb7c th\u1eed Ni (DMG). Nam ch\u00e2m ch\u1ec9 l\u00e0 ch\u1ec9 b\u00e1o s\u01a1 b\u1ed9.<br \/>\n&#8211; 304 c\u00f3 h\u00fat nam ch\u00e2m kh\u00f4ng?<br \/>\n  &#8211; 304 \u1ee7 \u0111\u1ea1t chu\u1ea9n g\u1ea7n nh\u01b0 kh\u00f4ng h\u00fat; nh\u01b0ng sau c\u00e1n ngu\u1ed9i\/d\u1eadp, c\u00f3 th\u1ec3 h\u01a1i nhi\u1ec5m t\u1eeb.<br \/>\n&#8211; D\u00f9ng 201 thay 304 \u1edf n\u1ed9i th\u1ea5t trong nh\u00e0 \u0111\u01b0\u1ee3c kh\u00f4ng?<br \/>\n  &#8211; C\u00f3 th\u1ec3 cho trang tr\u00ed kh\u00f4, kh\u00f4ng chloride. Kh\u00f4ng khuy\u1ebfn ngh\u1ecb cho nh\u00e0 v\u1ec7 sinh, b\u1ebfp c\u00f4ng nghi\u1ec7p, ngo\u00e0i tr\u1eddi.<\/p>\n<h2 id=\"toc-8-bao-quan-gia-cong-de-giu-kha-nang-chong-an-mon\"><span class=\"ez-toc-section\" id=\"Bao_quan_%E2%80%93_gia_cong_de_giu_kha_nang_chong_an_mon\"><\/span>B\u1ea3o qu\u1ea3n \u2013 gia c\u00f4ng \u0111\u1ec3 gi\u1eef kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>&#8211; Tr\u00e1nh nhi\u1ec5m s\u1eaft: D\u00f9ng b\u00e0n ch\u1ea3i, k\u1eb9p, b\u00faa ri\u00eang cho inox; kh\u00f4ng \u0111\u1ec3 chung v\u1edbi th\u00e9p carbon.<br \/>\n&#8211; L\u00e0m s\u1ea1ch sau h\u00e0n: T\u1ea9y g\u1ec9 \u2013 th\u1ee5 \u0111\u1ed9ng \u0111\u1ec3 t\u00e1i t\u1ea1o m\u00e0ng th\u1ee5 \u0111\u1ed9ng.<br \/>\n&#8211; L\u01b0u kho kh\u00f4 r\u00e1o, bao b\u1ecdc PE\/ gi\u1ea5y ch\u1ed1ng \u1ea9m; tr\u00e1nh mu\u1ed1i\/xi m\u0103ng\/b\u1ee5i s\u1eaft trong kho.<\/p>\n<h2 id=\"toc-9-nguon-tham-khao\"><span class=\"ez-toc-section\" id=\"Nguon_tham_khao\"><\/span>Ngu\u1ed3n tham kh\u1ea3o<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>&#8211; ASTM A240\/A480 \u2013 Standard Specification\/Tolerances for Stainless Steel Plate, Sheet, and Strip.<br \/>\n&#8211; JIS G4304\/G4305 \u2013 Hot\/Cold-rolled Stainless Steel Plate, Sheet and Strip.<br \/>\n&#8211; EN 10088 \u2013 Stainless steels.<br \/>\n&#8211; Outokumpu Stainless Steel Handbook.<br \/>\n&#8211; Nickel Institute \u2013 Guidelines for stainless steel selection and corrosion (v\u00ed d\u1ee5 Publication 12018).<br \/>\n&#8211; International Stainless Steel Forum (ISSF) \u2013 H\u01b0\u1edbng d\u1eabn th\u1ef1c h\u00e0nh inox.<\/p>\n<h2 id=\"toc-10-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; Inox lo\u1ea1i 1 l\u00e0 v\u1eadt li\u1ec7u ch\u00ednh ph\u1ea9m, \u1ed5n \u0111\u1ecbnh th\u00e0nh ph\u1ea7n \u2013 c\u01a1 t\u00ednh \u2013 b\u1ec1 m\u1eb7t; inox lo\u1ea1i 2 g\u1ed3m c\u1ea3 h\u00e0ng second (\u0111\u00fang m\u00e1c nh\u01b0ng l\u1ed7i th\u1ea9m m\u1ef9) v\u00e0 h\u00e0ng t\u00e1i ch\u1ebf\/sai m\u00e1c (r\u1ee7i ro cao).<br \/>\n&#8211; Ph\u00e2n bi\u1ec7t th\u1ef1c t\u1ebf ph\u1ea3i d\u1ef1a tr\u00ean h\u1ed3 s\u01a1 MTC, PMI\/XRF v\u00e0 ki\u1ec3m tra b\u1ec1 m\u1eb7t \u2013 dung sai; th\u1eed nam ch\u00e2m ch\u1ec9 mang t\u00ednh tham kh\u1ea3o.<br \/>\n&#8211; D\u00f9ng lo\u1ea1i 2 t\u00e1i ch\u1ebf cho h\u1ea1ng m\u1ee5c quan tr\u1ecdng d\u1eabn \u0111\u1ebfn \u0103n m\u00f2n s\u1edbm, h\u1ecfng h\u00e0n, \u0111\u1ed9i TCO; kho\u1ea3n \u201cti\u1ebft ki\u1ec7m\u201d ban \u0111\u1ea7u th\u01b0\u1eddng th\u00e0nh chi ph\u00ed l\u1edbn v\u1ec1 sau.<br \/>\n&#8211; L\u1ef1a ch\u1ecdn \u0111\u00fang m\u00e1c theo m\u00f4i tr\u01b0\u1eddng, \u0111\u1eb7t \u0111i\u1ec1u ki\u1ec7n k\u1ef9 thu\u1eadt r\u00f5 r\u00e0ng tr\u00ean PO, v\u00e0 ki\u1ec3m \u0111\u1ecbnh nghi\u00eam ng\u1eb7t l\u00e0 ch\u00eca kh\u00f3a \u0111\u1ea3m b\u1ea3o ch\u1ea5t l\u01b0\u1ee3ng \u2013 tu\u1ed5i th\u1ecd thi\u1ebft b\u1ecb.<\/p>\n<p>C\u1ea7n t\u01b0 v\u1ea5n ch\u1ecdn m\u00e1c, ki\u1ec3m \u0111\u1ecbnh PMI t\u1ea1i ch\u1ed7 v\u00e0 b\u00e1o gi\u00e1 t\u1ed1t nh\u1ea5t? Li\u00ean h\u1ec7 Inox C\u01b0\u1eddng Th\u1ecbnh. Hotline: 0343.417.281. Email: inoxcongnghiep.cuongthinh@gmail.com<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Ph\u00e2n bi\u1ec7t inox lo\u1ea1i 1 v\u00e0 lo\u1ea1i 2: kh\u00e1c bi\u1ec7t v\u1ec1 th\u00e0nh ph\u1ea7n, c\u01a1 t\u00ednh, b\u1ec1 m\u1eb7t; h\u01b0\u1edbng d\u1eabn ki\u1ec3m tra nhanh (PMI, nam ch\u00e2m, th\u1eed h\u00f3a ch\u1ea5t) v\u00e0 r\u1ee7i ro khi d\u00f9ng h\u00e0ng t\u00e1i ch\u1ebf.<\/p>\n","protected":false},"author":7,"featured_media":1004,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[23],"tags":[],"class_list":["post-2427","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\/2427","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=2427"}],"version-history":[{"count":0,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/posts\/2427\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/media\/1004"}],"wp:attachment":[{"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/media?parent=2427"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/categories?post=2427"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/tags?post=2427"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}