{"id":2550,"date":"2026-09-09T12:35:12","date_gmt":"2026-09-09T05:35:12","guid":{"rendered":"https:\/\/inoxcuongthinh.com\/chon-inox-cho-ket-cau-chiu-luc-9-tieu-chi-va-mac-khuyen-nghi\/"},"modified":"2026-09-09T12:35:12","modified_gmt":"2026-09-09T05:35:12","slug":"chon-inox-cho-ket-cau-chiu-luc-9-tieu-chi-va-mac-khuyen-nghi","status":"publish","type":"post","link":"https:\/\/inoxcuongthinh.com\/chon-inox-cho-ket-cau-chiu-luc-9-tieu-chi-va-mac-khuyen-nghi\/","title":{"rendered":"Ch\u1ecdn inox cho k\u1ebft c\u1ea5u ch\u1ecbu l\u1ef1c: 9 ti\u00eau ch\u00ed v\u00e0 m\u00e1c khuy\u1ebfn ngh\u1ecb"},"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;2550&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;Ch\u1ecdn inox cho k\u1ebft c\u1ea5u ch\u1ecbu l\u1ef1c: 9 ti\u00eau ch\u00ed v\u00e0 m\u00e1c khuy\u1ebfn ngh\u1ecb&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        <\/div>\n    <\/div>\n    \n<div 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\/chon-inox-cho-ket-cau-chiu-luc-9-tieu-chi-va-mac-khuyen-nghi\/#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\/chon-inox-cho-ket-cau-chiu-luc-9-tieu-chi-va-mac-khuyen-nghi\/#Khi_nao_nen_dung_inox_cho_ket_cau_chiu_luc\" >Khi n\u00e0o n\u00ean d\u00f9ng inox cho k\u1ebft c\u1ea5u ch\u1ecbu l\u1ef1c?<\/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\/chon-inox-cho-ket-cau-chiu-luc-9-tieu-chi-va-mac-khuyen-nghi\/#Nhom_mac_inox_phu_hop_cho_ket_cau_chiu_luc\" >Nh\u00f3m m\u00e1c inox ph\u00f9 h\u1ee3p cho k\u1ebft c\u1ea5u ch\u1ecbu l\u1ef1c<\/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\/chon-inox-cho-ket-cau-chiu-luc-9-tieu-chi-va-mac-khuyen-nghi\/#Austenitic_304304L_316316L_321_310S\" >Austenitic: 304\/304L, 316\/316L, 321, 310S<\/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\/chon-inox-cho-ket-cau-chiu-luc-9-tieu-chi-va-mac-khuyen-nghi\/#Duplex_2205_14462_2507\" >Duplex: 2205 (1.4462), 2507<\/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\/chon-inox-cho-ket-cau-chiu-luc-9-tieu-chi-va-mac-khuyen-nghi\/#Ferritic_430_444\" >Ferritic: 430, 444<\/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\/chon-inox-cho-ket-cau-chiu-luc-9-tieu-chi-va-mac-khuyen-nghi\/#Martensitic_410_420\" >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\/chon-inox-cho-ket-cau-chiu-luc-9-tieu-chi-va-mac-khuyen-nghi\/#9_tieu_chi_ky_thuat_can_quan_tam_khi_chon_inox_cho_ket_cau\" >9 ti\u00eau ch\u00ed k\u1ef9 thu\u1eadt c\u1ea7n quan t\u00e2m khi ch\u1ecdn inox cho k\u1ebft c\u1ea5u<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/inoxcuongthinh.com\/chon-inox-cho-ket-cau-chiu-luc-9-tieu-chi-va-mac-khuyen-nghi\/#1_Cuong_do_co_hoc_Rp02_Rm_do_gian_dai\" >1) C\u01b0\u1eddng \u0111\u1ed9 c\u01a1 h\u1ecdc (Rp0.2, Rm, \u0111\u1ed9 gi\u00e3n d\u00e0i)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/inoxcuongthinh.com\/chon-inox-cho-ket-cau-chiu-luc-9-tieu-chi-va-mac-khuyen-nghi\/#2_On_dinh_tong_thebuckling_va_do_vong\" >2) \u1ed4n \u0111\u1ecbnh t\u1ed5ng th\u1ec3\/buckling v\u00e0 \u0111\u1ed9 v\u00f5ng<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/inoxcuongthinh.com\/chon-inox-cho-ket-cau-chiu-luc-9-tieu-chi-va-mac-khuyen-nghi\/#3_Ben_moi_va_chi_tiet_hoa_moi_noi\" >3) B\u1ec1n m\u1ecfi v\u00e0 chi ti\u1ebft ho\u00e1 m\u1ed1i n\u1ed1i<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/inoxcuongthinh.com\/chon-inox-cho-ket-cau-chiu-luc-9-tieu-chi-va-mac-khuyen-nghi\/#4_An_mon_theo_moi_truong_va_chi_so_PREN\" >4) \u0102n m\u00f2n theo m\u00f4i tr\u01b0\u1eddng v\u00e0 ch\u1ec9 s\u1ed1 PREN<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/inoxcuongthinh.com\/chon-inox-cho-ket-cau-chiu-luc-9-tieu-chi-va-mac-khuyen-nghi\/#5_Nhiet_do_lam_viec\" >5) Nhi\u1ec7t \u0111\u1ed9 l\u00e0m vi\u1ec7c<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/inoxcuongthinh.com\/chon-inox-cho-ket-cau-chiu-luc-9-tieu-chi-va-mac-khuyen-nghi\/#6_Han_va_anh_huong_nhiet\" >6) H\u00e0n v\u00e0 \u1ea3nh h\u01b0\u1edfng nhi\u1ec7t<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/inoxcuongthinh.com\/chon-inox-cho-ket-cau-chiu-luc-9-tieu-chi-va-mac-khuyen-nghi\/#7_Lien_ket_bu_longoc_vit\" >7) Li\u00ean k\u1ebft bu l\u00f4ng\/\u1ed1c v\u00edt<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/inoxcuongthinh.com\/chon-inox-cho-ket-cau-chiu-luc-9-tieu-chi-va-mac-khuyen-nghi\/#8_Hoan_thien_be_mat_va_chi_tiet_thoat_nuoc\" >8) Ho\u00e0n thi\u1ec7n b\u1ec1 m\u1eb7t v\u00e0 chi ti\u1ebft tho\u00e1t n\u01b0\u1edbc<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-17\" href=\"https:\/\/inoxcuongthinh.com\/chon-inox-cho-ket-cau-chiu-luc-9-tieu-chi-va-mac-khuyen-nghi\/#9_Kha_nang_san_co_va_tieu_chuan_vat_lieu\" >9) Kh\u1ea3 n\u0103ng s\u1eb5n c\u00f3 v\u00e0 ti\u00eau chu\u1ea9n v\u1eadt li\u1ec7u<\/a><\/li><\/ul><\/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\/chon-inox-cho-ket-cau-chiu-luc-9-tieu-chi-va-mac-khuyen-nghi\/#Khuyen_nghi_nhanh_theo_moi_truong_va_yeu_cau_chiu_luc\" >Khuy\u1ebfn ngh\u1ecb nhanh theo m\u00f4i tr\u01b0\u1eddng v\u00e0 y\u00eau c\u1ea7u ch\u1ecbu l\u1ef1c<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-19\" href=\"https:\/\/inoxcuongthinh.com\/chon-inox-cho-ket-cau-chiu-luc-9-tieu-chi-va-mac-khuyen-nghi\/#Quy_cach_tieu_chuan_ap_dung_khi_dat_hang\" >Quy c\u00e1ch, ti\u00eau chu\u1ea9n \u00e1p d\u1ee5ng khi \u0111\u1eb7t h\u00e0ng<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-20\" href=\"https:\/\/inoxcuongthinh.com\/chon-inox-cho-ket-cau-chiu-luc-9-tieu-chi-va-mac-khuyen-nghi\/#Tinh_toan_so_bo_tiet_dien_va_chieu_day_goi_y_thuc_dung\" >T\u00ednh to\u00e1n s\u01a1 b\u1ed9 ti\u1ebft di\u1ec7n v\u00e0 chi\u1ec1u d\u00e0y: g\u1ee3i \u00fd th\u1ef1c d\u1ee5ng<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-21\" href=\"https:\/\/inoxcuongthinh.com\/chon-inox-cho-ket-cau-chiu-luc-9-tieu-chi-va-mac-khuyen-nghi\/#Chi_phi_vong_doi_LCC_va_ngan_sach\" >Chi ph\u00ed v\u00f2ng \u0111\u1eddi (LCC) v\u00e0 ng\u00e2n s\u00e1ch<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-22\" href=\"https:\/\/inoxcuongthinh.com\/chon-inox-cho-ket-cau-chiu-luc-9-tieu-chi-va-mac-khuyen-nghi\/#Cac_loi_pho_bien_can_tranh\" >C\u00e1c l\u1ed7i ph\u1ed5 bi\u1ebfn c\u1ea7n tr\u00e1nh<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-23\" href=\"https:\/\/inoxcuongthinh.com\/chon-inox-cho-ket-cau-chiu-luc-9-tieu-chi-va-mac-khuyen-nghi\/#Checklist_dat_hang_ky_thuat\" >Checklist \u0111\u1eb7t h\u00e0ng k\u1ef9 thu\u1eadt<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-24\" href=\"https:\/\/inoxcuongthinh.com\/chon-inox-cho-ket-cau-chiu-luc-9-tieu-chi-va-mac-khuyen-nghi\/#Case_study_ngan\" >Case study ng\u1eafn<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-25\" href=\"https:\/\/inoxcuongthinh.com\/chon-inox-cho-ket-cau-chiu-luc-9-tieu-chi-va-mac-khuyen-nghi\/#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-26\" href=\"https:\/\/inoxcuongthinh.com\/chon-inox-cho-ket-cau-chiu-luc-9-tieu-chi-va-mac-khuyen-nghi\/#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-khi-nao-nen-dung-inox-cho-ket-cau-chiu-luc\">Khi n\u00e0o n\u00ean d\u00f9ng inox cho k\u1ebft c\u1ea5u ch\u1ecbu l\u1ef1c?<\/a><\/li>\n<li><a href=\"#toc-1-nhom-mac-inox-phu-hop-cho-ket-cau-chiu-luc\">Nh\u00f3m m\u00e1c inox ph\u00f9 h\u1ee3p cho k\u1ebft c\u1ea5u ch\u1ecbu l\u1ef1c<\/a><\/li>\n<li><a href=\"#toc-2-9-tieu-chi-ky-thuat-can-quan-tam-khi-chon-inox-cho\">9 ti\u00eau ch\u00ed k\u1ef9 thu\u1eadt c\u1ea7n quan t\u00e2m khi ch\u1ecdn inox cho k\u1ebft c\u1ea5u<\/a><\/li>\n<li><a href=\"#toc-3-khuyen-nghi-nhanh-theo-moi-truong-va-yeu-cau-chiu-\">Khuy\u1ebfn ngh\u1ecb nhanh theo m\u00f4i tr\u01b0\u1eddng v\u00e0 y\u00eau c\u1ea7u ch\u1ecbu l\u1ef1c<\/a><\/li>\n<li><a href=\"#toc-4-quy-cach-tieu-chuan-ap-dung-khi-dat-hang\">Quy c\u00e1ch, ti\u00eau chu\u1ea9n \u00e1p d\u1ee5ng khi \u0111\u1eb7t h\u00e0ng<\/a><\/li>\n<li><a href=\"#toc-5-tinh-toan-so-bo-tiet-dien-va-chieu-day-goi-y-thuc-\">T\u00ednh to\u00e1n s\u01a1 b\u1ed9 ti\u1ebft di\u1ec7n v\u00e0 chi\u1ec1u d\u00e0y: g\u1ee3i \u00fd th\u1ef1c d\u1ee5ng<\/a><\/li>\n<li><a href=\"#toc-6-chi-phi-vong-doi-lcc-va-ngan-sach\">Chi ph\u00ed v\u00f2ng \u0111\u1eddi (LCC) v\u00e0 ng\u00e2n s\u00e1ch<\/a><\/li>\n<li><a href=\"#toc-7-cac-loi-pho-bien-can-tranh\">C\u00e1c l\u1ed7i ph\u1ed5 bi\u1ebfn c\u1ea7n tr\u00e1nh<\/a><\/li>\n<li><a href=\"#toc-8-checklist-dat-hang-ky-thuat\">Checklist \u0111\u1eb7t h\u00e0ng k\u1ef9 thu\u1eadt<\/a><\/li>\n<li><a href=\"#toc-9-case-study-ngan\">Case study ng\u1eafn<\/a><\/li>\n<li><a href=\"#toc-10-nguon-tham-khao\">Ngu\u1ed3n 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>L\u1ef1a ch\u1ecdn inox cho k\u1ebft c\u1ea5u ch\u1ecbu l\u1ef1c \u0111\u00f2i h\u1ecfi \u0111\u00e1nh gi\u00e1 \u0111\u1ed3ng th\u1eddi c\u01a1 t\u00ednh, \u1ed5n \u0111\u1ecbnh, m\u00f4i tr\u01b0\u1eddng \u0103n m\u00f2n v\u00e0 ph\u01b0\u01a1ng \u00e1n gia c\u00f4ng\u2013l\u1eafp d\u1ef1ng. \u0110\u00e2y l\u00e0 ph\u1ea7n quan tr\u1ecdng trong b\u1ee9c tranh t\u1ed5ng th\u1ec3 \u201cch\u1ecdn inox theo m\u00f4i tr\u01b0\u1eddng, m\u1ee5c \u0111\u00edch v\u00e0 ng\u00e2n s\u00e1ch\u201d, nh\u01b0ng b\u00e0i vi\u1ebft n\u00e0y t\u1eadp trung ho\u00e0n to\u00e0n v\u00e0o y\u00eau c\u1ea7u ch\u1ecbu l\u1ef1c \u0111\u1ec3 b\u1ea1n c\u00f3 th\u1ec3 ra quy\u1ebft \u0111\u1ecbnh d\u1ee9t kho\u00e1t, an to\u00e0n v\u00e0 t\u1ed1i \u01b0u chi ph\u00ed v\u00f2ng \u0111\u1eddi.<\/p>\n<h2 id=\"toc-0-khi-nao-nen-dung-inox-cho-ket-cau-chiu-luc\"><span class=\"ez-toc-section\" id=\"Khi_nao_nen_dung_inox_cho_ket_cau_chiu_luc\"><\/span>Khi n\u00e0o n\u00ean d\u00f9ng inox cho k\u1ebft c\u1ea5u ch\u1ecbu l\u1ef1c?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>&#8211; M\u00f4i tr\u01b0\u1eddng \u0103n m\u00f2n v\u1eeba\u2013n\u1eb7ng (ngo\u00e0i tr\u1eddi, ven bi\u1ec3n, c\u00f4ng nghi\u1ec7p, th\u1ef1c ph\u1ea9m\/ho\u00e1 ch\u1ea5t nh\u1eb9), c\u1ea7n tu\u1ed5i th\u1ecd cao v\u00e0 b\u1ea3o tr\u00ec t\u1ed1i thi\u1ec3u.<br \/>\n&#8211; Y\u00eau c\u1ea7u v\u1ec7 sinh v\u00e0 th\u1ea9m m\u1ef9 (nh\u00e0 m\u00e1y th\u1ef1c ph\u1ea9m, d\u01b0\u1ee3c, kh\u00f4ng gian c\u00f4ng c\u1ed9ng).<br \/>\n&#8211; T\u1ed5ng chi ph\u00ed v\u00f2ng \u0111\u1eddi (LCC) \u01b0u vi\u1ec7t h\u01a1n th\u00e9p carbon m\u1ea1 k\u1ebdm khi t\u00ednh chi ph\u00ed s\u01a1n\/ph\u1ee7, d\u1eebng m\u00e1y b\u1ea3o tr\u00ec, v\u00e0 r\u1ee7i ro \u0103n m\u00f2n.<\/p>\n<h2 id=\"toc-1-nhom-mac-inox-phu-hop-cho-ket-cau-chiu-luc\"><span class=\"ez-toc-section\" id=\"Nhom_mac_inox_phu_hop_cho_ket_cau_chiu_luc\"><\/span>Nh\u00f3m m\u00e1c inox ph\u00f9 h\u1ee3p cho k\u1ebft c\u1ea5u ch\u1ecbu l\u1ef1c<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><span class=\"ez-toc-section\" id=\"Austenitic_304304L_316316L_321_310S\"><\/span>Austenitic: 304\/304L, 316\/316L, 321, 310S<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>&#8211; \u0110\u1eb7c tr\u01b0ng: d\u1ebbo dai cao, h\u00e0n t\u1ed1t, kh\u00f4ng c\u00f3 \u0111i\u1ec3m ch\u1ea3y \u201cph\u1eb3ng\u201d; Rp0.2 (gi\u1edbi h\u1ea1n ch\u1ea3y 0,2%) 170\u2013230 MPa; E \u2248 193 GPa; h\u1ec7 s\u1ed1 gi\u00e3n n\u1edf nhi\u1ec7t cao.<br \/>\n&#8211; 304\/304L: d\u00f9ng t\u1ed1t trong nh\u00e0\/ngo\u00e0i tr\u1eddi n\u1ed9i \u0111\u1ecba. PREN ~18\u201319 (kh\u00f4ng ph\u00f9 h\u1ee3p ven bi\u1ec3n tr\u1ea7n).<br \/>\n&#8211; 316\/316L: th\u00eam Mo, ch\u1ed1ng r\u1ed7\/ke\u0303 n\u1ee9t k\u1ebd t\u1ed1t; PREN ~24 (t\u1ed1i thi\u1ec3u cho ven bi\u1ec3n nh\u1eb9). \u01afu ti\u00ean 316L cho h\u00e0n nhi\u1ec1u.<br \/>\n&#8211; 321 (\u1ed5n \u0111\u1ecbnh Ti) v\u00e0 310S: d\u00f9ng nhi\u1ec7t cao; 321 ~ 450\u2013850\u00b0C, 310S t\u1edbi ~1.000\u00b0C (kh\u1ea3 n\u0103ng ch\u1ecbu t\u1ea3i gi\u1ea3m theo nhi\u1ec7t).<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Duplex_2205_14462_2507\"><\/span>Duplex: 2205 (1.4462), 2507<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>&#8211; \u0110\u1eb7c tr\u01b0ng: b\u1ec1n cao (Rp0.2 \u2248 450\u2013550 MPa), E \u2248 200 GPa, ch\u1ed1ng \u0103n m\u00f2n k\u1ebd n\u1ee9t \u1ee9ng su\u1ea5t Cl- t\u1ed1t, PREN 2205 ~34\u201335.<br \/>\n&#8211; \u1ee8ng d\u1ee5ng: ven bi\u1ec3n\/ho\u00e1 ch\u1ea5t\/ t\u1ea3i l\u1edbn mu\u1ed1n gi\u1ea3m chi\u1ec1u d\u00e0y\/kh\u1ed1i l\u01b0\u1ee3ng. H\u00e0n y\u00eau c\u1ea7u ki\u1ec3m so\u00e1t nhi\u1ec7t nghi\u00eam ng\u1eb7t.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Ferritic_430_444\"><\/span>Ferritic: 430, 444<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>&#8211; Chi ph\u00ed th\u1ea5p h\u01a1n 304, ch\u1ed1ng \u0103n m\u00f2n k\u00e9m h\u01a1n, \u0111\u1ed9 dai th\u1ea5p h\u01a1n (\u0111\u1eb7c bi\u1ec7t \u1edf m\u1ed1i h\u00e0n, nhi\u1ec7t \u0111\u1ed9 th\u1ea5p).<br \/>\n&#8211; Ch\u1ec9 khuy\u1ebfn ngh\u1ecb cho chi ti\u1ebft ph\u1ee5, t\u1ea3i nh\u1ecf, m\u00f4i tr\u01b0\u1eddng kh\u00f4; \u00edt d\u00f9ng l\u00e0m ph\u1ea7n t\u1eed ch\u1ecbu l\u1ef1c ch\u00ednh.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Martensitic_410_420\"><\/span>Martensitic: 410, 420<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>&#8211; C\u1ee9ng\u2013b\u1ec1n cao sau t\u00f4i\u2013ram, nh\u01b0ng ch\u1ed1ng \u0103n m\u00f2n h\u1ea1n ch\u1ebf, \u0111\u1ed9 dai th\u1ea5p; kh\u00f3 h\u00e0n.<br \/>\n&#8211; \u00cdt d\u00f9ng cho khung\/k\u00e8o; ph\u00f9 h\u1ee3p tr\u1ee5c, chi ti\u1ebft c\u01a1 kh\u00ed \u0111\u1eb7c th\u00f9.<\/p>\n<h2 id=\"toc-2-9-tieu-chi-ky-thuat-can-quan-tam-khi-chon-inox-cho\"><span class=\"ez-toc-section\" id=\"9_tieu_chi_ky_thuat_can_quan_tam_khi_chon_inox_cho_ket_cau\"><\/span>9 ti\u00eau ch\u00ed k\u1ef9 thu\u1eadt c\u1ea7n quan t\u00e2m khi ch\u1ecdn inox cho k\u1ebft c\u1ea5u<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><span class=\"ez-toc-section\" id=\"1_Cuong_do_co_hoc_Rp02_Rm_do_gian_dai\"><\/span>1) C\u01b0\u1eddng \u0111\u1ed9 c\u01a1 h\u1ecdc (Rp0.2, Rm, \u0111\u1ed9 gi\u00e3n d\u00e0i)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>&#8211; Inox austenitic kh\u00f4ng c\u00f3 \u0111i\u1ec3m ch\u1ea3y r\u00f5; d\u00f9ng Rp0.2 \u0111\u1ec3 thi\u1ebft k\u1ebf.<br \/>\n&#8211; Tham kh\u1ea3o \u0111i\u1ec3n h\u00ecnh (tr\u1ea1ng th\u00e1i \u1ee7): 304L Rp0.2 \u2248 170\u2013205 MPa, Rm \u2248 485\u2013620 MPa; 316L Rp0.2 \u2248 170\u2013200 MPa; 2205 Rp0.2 \u2248 450 MPa, Rm \u2248 620\u2013800 MPa.<br \/>\n&#8211; L\u01b0u \u00fd l\u00e0m ngu\u1ed9i bi\u1ebfn c\u1ee9ng t\u1ea1i v\u00f9ng gia c\u00f4ng ngu\u1ed9i c\u00f3 th\u1ec3 t\u0103ng c\u01b0\u1eddng \u0111\u1ed9 nh\u01b0ng gi\u1ea3m \u0111\u1ed9 d\u1ebbo t\u1ea1i ch\u1ed7.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"2_On_dinh_tong_thebuckling_va_do_vong\"><\/span>2) \u1ed4n \u0111\u1ecbnh t\u1ed5ng th\u1ec3\/buckling v\u00e0 \u0111\u1ed9 v\u00f5ng<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>&#8211; E c\u1ee7a inox austenitic ~193 GPa (g\u1ea7n th\u00e9p carbon), nh\u01b0ng \u0111\u01b0\u1eddng cong \u1ee9ng x\u1eed phi tuy\u1ebfn s\u1edbm \u2192 \u1ea3nh h\u01b0\u1edfng \u1ed5n \u0111\u1ecbnh c\u1ee5c b\u1ed9.<br \/>\n&#8211; Ki\u1ec3m tra \u1ed5n \u0111\u1ecbnh t\u1ed5ng th\u1ec3, \u1ed5n \u0111\u1ecbnh c\u1ee5c b\u1ed9 b\u1ea3n m\u1ecfng, be\u0300n c\u1ed9t\/d\u1ea7m theo ti\u00eau chu\u1ea9n thi\u1ebft k\u1ebf chuy\u00ean bi\u1ec7t cho inox (xem ti\u00eau chu\u1ea9n \u1edf cu\u1ed1i b\u00e0i).<br \/>\n&#8211; V\u1edbi c\u00f9ng ti\u1ebft di\u1ec7n, \u0111\u1ed9 v\u00f5ng g\u1ea7n t\u01b0\u01a1ng \u0111\u01b0\u01a1ng th\u00e9p carbon; mu\u1ed1n gi\u1ea3m v\u00f5ng n\u00ean t\u0103ng m\u00f4 men qu\u00e1n t\u00ednh ho\u1eb7c th\u00eam g\u00e2n.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"3_Ben_moi_va_chi_tiet_hoa_moi_noi\"><\/span>3) B\u1ec1n m\u1ecfi v\u00e0 chi ti\u1ebft ho\u00e1 m\u1ed1i n\u1ed1i<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>&#8211; B\u1ec1 m\u1eb7t m\u1ecbn (2B\/No.4) v\u00e0 ho\u00e0n thi\u1ec7n m\u1ed1i h\u00e0n t\u1ed1t t\u0103ng tu\u1ed5i th\u1ecd m\u1ecfi. Tr\u00e1nh g\u00f3c s\u1eafc\/notch, x\u1eed l\u00fd m\u00e9p h\u00e0n m\u1ecbn, peening nh\u1eb9 n\u1ebfu c\u1ea7n.<br \/>\n&#8211; Ki\u1ec3m so\u00e1t rung \u0111\u1ed9ng v\u1eadn h\u00e0nh; \u00e1p d\u1ee5ng chi ti\u1ebft m\u1ed1i h\u00e0n\/bolted theo c\u1ea5p chi ti\u1ebft m\u1ecfi trong ti\u00eau chu\u1ea9n.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"4_An_mon_theo_moi_truong_va_chi_so_PREN\"><\/span>4) \u0102n m\u00f2n theo m\u00f4i tr\u01b0\u1eddng v\u00e0 ch\u1ec9 s\u1ed1 PREN<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>&#8211; PREN \u2248 %Cr + 3.3\u00d7%Mo + 16\u00d7%N.<br \/>\n  &#8211; 304\/304L: ~18\u201319 (\u0111\u00f4 th\u1ecb n\u1ed9i \u0111\u1ecba, v\u1ec7 sinh t\u1ed1t, thi\u1ebft k\u1ebf tho\u00e1t n\u01b0\u1edbc).<br \/>\n  &#8211; 316\/316L: ~24 (ven bi\u1ec3n nh\u1eb9, phun s\u01b0\u01a1ng mu\u1ed1i).<br \/>\n  &#8211; 2205: ~34\u201335 (bi\u1ec3n\/ho\u00e1 ch\u1ea5t, khe k\u1ebd, t\u1ea3i n\u1eb7ng).<br \/>\n&#8211; Tr\u00e1nh n\u01b0\u1edbc \u0111\u1ecdng\/khe k\u1ebd, tr\u00e1nh ti\u1ebfp x\u00fac \u0111i\u1ec7n ho\u00e1 v\u1edbi th\u00e9p carbon\/k\u1ebdm khi \u1ea9m \u01b0\u1edbt (d\u00f9ng mi\u1ebfng c\u00e1ch \u0111i\u1ec7n, s\u01a1n c\u00e1ch ly).<\/p>\n<h3><span class=\"ez-toc-section\" id=\"5_Nhiet_do_lam_viec\"><\/span>5) Nhi\u1ec7t \u0111\u1ed9 l\u00e0m vi\u1ec7c<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>&#8211; Nhi\u1ec7t cao: \u0111\u1ed9 b\u1ec1n gi\u1ea3m; ch\u1ecdn 321\/310S cho >450\u00b0C.<br \/>\n&#8211; L\u1ea1nh s\u00e2u: 304L\/316L v\u1eabn d\u1ebbo t\u1edbi -196\u00b0C (ph\u00f9 h\u1ee3p kho l\u1ea1nh, LNG).<br \/>\n&#8211; H\u1ec7 s\u1ed1 gi\u00e3n n\u1edf nhi\u1ec7t austenitic ~16\u201317\u00d710^-6\/K \u2192 ki\u1ec3m so\u00e1t \u1ee9ng su\u1ea5t nhi\u1ec7t, khe co gi\u00e3n.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"6_Han_va_anh_huong_nhiet\"><\/span>6) H\u00e0n v\u00e0 \u1ea3nh h\u01b0\u1edfng nhi\u1ec7t<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>&#8211; \u01afu ti\u00ean m\u00e1c L (C th\u1ea5p) \u0111\u1ec3 gi\u1ea3m nh\u1ea1y ho\u00e1 \u0103n m\u00f2n tinh gi\u1edbi.<br \/>\n&#8211; Quy tr\u00ecnh: theo AWS D1.6; ki\u1ec3m so\u00e1t nhi\u1ec7t \u0111\u1ea7u v\u00e0o v\u00e0 nhi\u1ec7t gi\u1eefa l\u1edbp; ch\u1ecdn que\/kim lo\u1ea1i \u0111i\u1ec1n ph\u00f9 h\u1ee3p (v\u00ed d\u1ee5 ER308L cho 304L; ER316L cho 316L; ER2209 cho 2205).<br \/>\n&#8211; Sau h\u00e0n: t\u1ea9y g\u1ec9\u2013th\u1ee5 \u0111\u1ed9ng ho\u00e1 (ASTM A380\/A967) \u0111\u1ec3 ph\u1ee5c h\u1ed3i l\u1edbp th\u1ee5 \u0111\u1ed9ng v\u00e0 lo\u1ea1i b\u1ecf oxit.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"7_Lien_ket_bu_longoc_vit\"><\/span>7) Li\u00ean k\u1ebft bu l\u00f4ng\/\u1ed1c v\u00edt<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>&#8211; Ch\u1ecdn theo ISO 3506: A2-70 (t\u01b0\u01a1ng \u0111\u01b0\u01a1ng 304), A4-70\/A4-80 (316). Ven bi\u1ec3n \u01b0u ti\u00ean A4.<br \/>\n&#8211; Nguy c\u01a1 se k\u1eb9t (galling) v\u1edbi austenitic: d\u00f9ng m\u1ee1 ch\u1ed1ng k\u1eb9t MoS2\/PTFE, si\u1ebft m\u00f4-men ki\u1ec3m so\u00e1t, c\u00e2n nh\u1eafc d\u00f9ng \u0111ai \u1ed1c kh\u00e1c c\u1ea5p\/duplex.<br \/>\n&#8211; C\u00e1ch \u0111i\u1ec7n khi gh\u00e9p v\u1edbi th\u00e9p \u0111en\/k\u1ebdm \u0111\u1ec3 tr\u00e1nh \u0103n m\u00f2n \u0111i\u1ec7n ho\u00e1.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"8_Hoan_thien_be_mat_va_chi_tiet_thoat_nuoc\"><\/span>8) Ho\u00e0n thi\u1ec7n b\u1ec1 m\u1eb7t v\u00e0 chi ti\u1ebft tho\u00e1t n\u01b0\u1edbc<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>&#8211; B\u1ec1 m\u1eb7t nh\u1eb5n (2B, No.4) gi\u1ea3m b\u00e1m mu\u1ed1i\/b\u1ee5i, t\u0103ng ch\u1ed1ng r\u1ed7 v\u00e0 m\u1ecfi. Tr\u00e1nh khe k\u1ebd, b\u1ecbt \u0111\u1ea7u \u1ed1ng, khoan l\u1ed7 tho\u00e1t n\u01b0\u1edbc.<br \/>\n&#8211; \u1ede ven bi\u1ec3n, \u0111\u1ecbnh k\u1ef3 r\u1eeda n\u01b0\u1edbc ng\u1ecdt \u0111\u1ec3 k\u00e9o d\u00e0i tu\u1ed5i th\u1ecd ngay c\u1ea3 v\u1edbi 316\/2205.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"9_Kha_nang_san_co_va_tieu_chuan_vat_lieu\"><\/span>9) Kh\u1ea3 n\u0103ng s\u1eb5n c\u00f3 v\u00e0 ti\u00eau chu\u1ea9n v\u1eadt li\u1ec7u<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>&#8211; Vi\u1ec7t Nam d\u1ec5 mua: t\u1ea5m\/cu\u1ed9n ASTM A240 (304\/304L\/316L), \u1ed1ng h\u00e0n c\u01a1 kh\u00ed ASTM A554, \u1ed1ng c\u00f4ng nghi\u1ec7p ASTM A312, thanh\u2013tr\u00f2n ASTM A276.<br \/>\n&#8211; H\u00ecnh th\u00e9p ch\u1eef I\/U inox \u00edt s\u1eb5n; gi\u1ea3i ph\u00e1p: h\u00e0n t\u1ed5 h\u1ee3p t\u1eeb t\u1ea5m (HRAP\/No.1) ho\u1eb7c d\u00f9ng \u1ed1ng h\u1ed9p A554\/A312 l\u00e0m d\u1ea7m c\u1ed9t.<br \/>\n&#8211; Y\u00eau c\u1ea7u CO\/CQ, MTC theo EN 10204 lo\u1ea1i 3.1; ki\u1ec3m tra PMI (XRF) t\u1ea1i x\u01b0\u1edfng.<\/p>\n<h2 id=\"toc-3-khuyen-nghi-nhanh-theo-moi-truong-va-yeu-cau-chiu-\"><span class=\"ez-toc-section\" id=\"Khuyen_nghi_nhanh_theo_moi_truong_va_yeu_cau_chiu_luc\"><\/span>Khuy\u1ebfn ngh\u1ecb nhanh theo m\u00f4i tr\u01b0\u1eddng v\u00e0 y\u00eau c\u1ea7u ch\u1ecbu l\u1ef1c<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>&#8211; Trong nh\u00e0, kh\u00f4, t\u1ea3i trung b\u00ecnh: 304\/304L; d\u00f9ng \u1ed1ng h\u1ed9p A554\/d\u1ea7m t\u1ed5 h\u1ee3p; bu l\u00f4ng A2-70; b\u1ec1 m\u1eb7t 2B\/No.4.<br \/>\n&#8211; Ngo\u00e0i tr\u1eddi \u0111\u00f4 th\u1ecb n\u1ed9i \u0111\u1ecba (xa bi\u1ec3n >20 km): 304L n\u1ebfu thi\u1ebft k\u1ebf tr\u00e1nh \u0111\u1ecdng n\u01b0\u1edbc; b\u1ea3o tr\u00ec r\u1eeda \u0111\u1ecbnh k\u1ef3. D\u1ef1 ph\u00f2ng \u0103n m\u00f2n\/\u00f4 nhi\u1ec5m n\u1eb7ng \u2192 316L.<br \/>\n&#8211; Ven bi\u1ec3n 5\u201320 km: 316L t\u1ed1i thi\u1ec3u; chi ti\u1ebft c\u00f3 khe k\u1ebd ho\u1eb7c phun mu\u1ed1i m\u1ea1nh \u2192 c\u00e2n nh\u1eafc 2205 cho c\u1ea5u ki\u1ec7n ch\u00ednh.<br \/>\n&#8211; Ven bi\u1ec3n \u22645 km, c\u1ea7u c\u1ea3ng, nh\u00e0 m\u00e1y thu\u1ef7 s\u1ea3n: 2205 cho c\u1ed9t\/d\u1ea7m ch\u00ednh; 316L cho h\u1ea1ng m\u1ee5c ph\u1ee5 \u00edt khe k\u1ebd.<br \/>\n&#8211; Ho\u00e1 ch\u1ea5t nh\u1eb9\/Cl- n\u00f3ng: 2205 ho\u1eb7c si\u00eau austenitic (904L) theo t\u01b0 v\u1ea5n \u0103n m\u00f2n.<br \/>\n&#8211; Nhi\u1ec7t cao >450\u00b0C: 321\/310S (ki\u1ec3m tra gi\u1ea3m b\u1ec1n theo nhi\u1ec7t).<br \/>\n&#8211; Kho l\u1ea1nh\/cryogenic: 304L\/316L.<\/p>\n<h2 id=\"toc-4-quy-cach-tieu-chuan-ap-dung-khi-dat-hang\"><span class=\"ez-toc-section\" id=\"Quy_cach_tieu_chuan_ap_dung_khi_dat_hang\"><\/span>Quy c\u00e1ch, ti\u00eau chu\u1ea9n \u00e1p d\u1ee5ng khi \u0111\u1eb7t h\u00e0ng<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>&#8211; Ti\u00eau chu\u1ea9n v\u1eadt li\u1ec7u:<br \/>\n  &#8211; T\u1ea5m\/cu\u1ed9n: ASTM A240\/A480 (\u0111\u1ed9 d\u00e0y, dung sai, ho\u00e0n thi\u1ec7n).<br \/>\n  &#8211; Thanh\u2013tr\u00f2n\u2013d\u1eb9p\/bi\u00ean d\u1ea1ng: ASTM A276 ho\u1eb7c ASTM A479 (cho \u1ee9ng d\u1ee5ng \u00e1p l\u1ef1c).<br \/>\n  &#8211; \u1ed0ng h\u00e0n c\u01a1 kh\u00ed: ASTM A554; \u1ed0ng c\u00f4ng nghi\u1ec7p: ASTM A312.<br \/>\n  &#8211; Th\u00e9p g\u00e2n inox (n\u1ebfu d\u00f9ng b\u00ea t\u00f4ng c\u1ed1t): ASTM A955\/A955M.<br \/>\n&#8211; Thi\u1ebft k\u1ebf\u2013thi c\u00f4ng:<br \/>\n  &#8211; Thi\u1ebft k\u1ebf k\u1ebft c\u1ea5u inox: EN 1993-1-4 (Eurocode 3 \u2013 ph\u1ea7n inox) ho\u1eb7c AISC 370.<br \/>\n  &#8211; H\u00e0n inox: AWS D1.6.<br \/>\n  &#8211; Bu l\u00f4ng inox: ISO 3506.<br \/>\n&#8211; H\u1ed3 s\u01a1 ch\u1ea5t l\u01b0\u1ee3ng: EN 10204 3.1 (MTC), ch\u1ee9ng ch\u1ec9 h\u00e0n WPS\/PQR theo AWS D1.6, NDT m\u1ed1i h\u00e0n theo m\u1ee9c \u0111\u1ed9 quan tr\u1ecdng.<\/p>\n<h2 id=\"toc-5-tinh-toan-so-bo-tiet-dien-va-chieu-day-goi-y-thuc-\"><span class=\"ez-toc-section\" id=\"Tinh_toan_so_bo_tiet_dien_va_chieu_day_goi_y_thuc_dung\"><\/span>T\u00ednh to\u00e1n s\u01a1 b\u1ed9 ti\u1ebft di\u1ec7n v\u00e0 chi\u1ec1u d\u00e0y: g\u1ee3i \u00fd th\u1ef1c d\u1ee5ng<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>&#8211; So v\u1edbi 316L, d\u00f9ng duplex 2205 c\u00f3 th\u1ec3 gi\u1ea3m chi\u1ec1u d\u00e0y 25\u201340% nh\u1edd Rp0.2 cao, nh\u01b0ng v\u1eabn ph\u1ea3i ki\u1ec3m tra \u1ed5n \u0111\u1ecbnh\/\u0111\u1ed9 v\u00f5ng v\u00ec E t\u01b0\u01a1ng \u0111\u01b0\u01a1ng.<br \/>\n&#8211; T\u1ea5m b\u1ea3n m\u1ecfng ch\u1ecbu n\u00e9n\/u\u1ed1n: \u01b0u ti\u00ean th\u00eam g\u00e2n c\u1ee9ng thay v\u00ec ch\u1ec9 t\u0103ng chi\u1ec1u d\u00e0y (hi\u1ec7u qu\u1ea3 v\u1ec1 kh\u1ed1i l\u01b0\u1ee3ng v\u00e0 h\u1ea1n ch\u1ebf r\u1ee7i ro o\u1eb1n c\u1ee5c b\u1ed9).<br \/>\n&#8211; \u1ed0ng h\u1ed9p A554 l\u00e0m d\u1ea7m\/c\u1ed9t cho ki\u1ebfn tr\u00fac: ch\u1ecdn chi\u1ec1u d\u00e0y \u22652,0\u20133,0 mm cho nh\u1ecbp nh\u1ecf; nh\u1ecbp l\u1edbn\/ t\u1ea3i xe c\u1ed9 \u2192 d\u00f9ng d\u1ea7m t\u1ed5 h\u1ee3p t\u1eeb t\u1ea5m No.1 (HRAP).<\/p>\n<p>V\u00ed d\u1ee5 nhanh: S\u00e0n thao t\u00e1c ngo\u00e0i tr\u1eddi n\u1ed9i \u0111\u1ecba (q = 5 kN\/m\u00b2)<br \/>\n&#8211; Ph\u01b0\u01a1ng \u00e1n A (316L): d\u1ea7m h\u1ed9p 100\u00d750\u00d73.0 mm, nh\u1ecbp 2,5 m, ki\u1ec3m tra \u1ed5n \u0111\u1ecbnh + m\u1ecfi t\u1ea1i g\u1ed1i v\u00e0 l\u1ed7 b\u1eaft.<br \/>\n&#8211; Ph\u01b0\u01a1ng \u00e1n B (2205): c\u00f3 th\u1ec3 gi\u1ea3m c\u00f2n 100\u00d750\u00d72.0\u20132.5 mm nh\u01b0ng ph\u1ea3i gi\u1eef \u0111\u1ed9 v\u00f5ng trong gi\u1edbi h\u1ea1n v\u00e0 ki\u1ec3m tra m\u1ed1i h\u00e0n theo AWS D1.6.<\/p>\n<h2 id=\"toc-6-chi-phi-vong-doi-lcc-va-ngan-sach\"><span class=\"ez-toc-section\" id=\"Chi_phi_vong_doi_LCC_va_ngan_sach\"><\/span>Chi ph\u00ed v\u00f2ng \u0111\u1eddi (LCC) v\u00e0 ng\u00e2n s\u00e1ch<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>&#8211; V\u1eadt li\u1ec7u inox \u0111\u1eaft h\u01a1n th\u00e9p carbon\/m\u1ea1 k\u1ebdm \u1edf chi ph\u00ed \u0111\u1ea7u t\u01b0, nh\u01b0ng:<br \/>\n  &#8211; Gi\u1ea3m\/b\u1ecf s\u01a1n \u0111\u1ecbnh k\u1ef3, \u00edt d\u1eebng m\u00e1y, \u00edt thay th\u1ebf do \u0103n m\u00f2n.<br \/>\n  &#8211; V\u1edbi duplex, gi\u1ea3m kh\u1ed1i l\u01b0\u1ee3ng th\u00e9p \u2192 gi\u1ea3m nh\u00e2n c\u00f4ng l\u1eafp d\u1ef1ng, m\u00f3ng.<br \/>\n&#8211; Kinh nghi\u1ec7m d\u1ef1 \u00e1n: \u1edf m\u00f4i tr\u01b0\u1eddng bi\u1ec3n, 316L\/2205 th\u01b0\u1eddng cho LCC th\u1ea5p h\u01a1n sau 10\u201320 n\u0103m so v\u1edbi th\u00e9p m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng.<\/p>\n<h2 id=\"toc-7-cac-loi-pho-bien-can-tranh\"><span class=\"ez-toc-section\" id=\"Cac_loi_pho_bien_can_tranh\"><\/span>C\u00e1c l\u1ed7i ph\u1ed5 bi\u1ebfn c\u1ea7n tr\u00e1nh<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>&#8211; D\u00f9ng 201 cho k\u1ebft c\u1ea5u ch\u00ednh, \u0111\u1eb7c bi\u1ec7t ngo\u00e0i tr\u1eddi\/ven bi\u1ec3n (r\u1ee7i ro r\u1ed7\/\u0111\u1ee9t m\u1ecfi s\u1edbm).<br \/>\n&#8211; Kh\u00f4ng ch\u1ec9 \u0111\u1ecbnh \u201cL\u201d cho h\u00e0n nhi\u1ec1u (304 thay 304L) \u2192 nguy c\u01a1 \u0103n m\u00f2n tinh gi\u1edbi.<br \/>\n&#8211; B\u1ecf qua c\u00e1ch \u0111i\u1ec7n khi gh\u00e9p v\u1edbi th\u00e9p carbon\/k\u1ebdm \u2192 \u0103n m\u00f2n \u0111i\u1ec7n ho\u00e1.<br \/>\n&#8211; Kh\u00f4ng t\u1ea9y g\u1ec9\u2013th\u1ee5 \u0111\u1ed9ng ho\u00e1 sau h\u00e0n \u2192 m\u1ed1i h\u00e0n s\u1edbm r\u1ed7.<br \/>\n&#8211; D\u00f9ng bu l\u00f4ng th\u00e9p \u0111en tr\u00ean k\u1ebft c\u1ea5u inox ho\u1eb7c kh\u00f4ng ch\u1ed1ng se k\u1eb9t bu l\u00f4ng inox.<br \/>\n&#8211; Thi\u1ebfu tho\u00e1t n\u01b0\u1edbc\/\u0111\u1ea7u \u1ed1ng b\u1ecbt k\u00edn \u2192 n\u01b0\u1edbc mu\u1ed1i \u0111\u1ecdng g\u00e2y r\u1ed7 k\u1ebd.<\/p>\n<h2 id=\"toc-8-checklist-dat-hang-ky-thuat\"><span class=\"ez-toc-section\" id=\"Checklist_dat_hang_ky_thuat\"><\/span>Checklist \u0111\u1eb7t h\u00e0ng k\u1ef9 thu\u1eadt<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>&#8211; M\u00e1c th\u00e9p v\u00e0 ti\u00eau chu\u1ea9n: v\u00ed d\u1ee5 \u201c316L theo ASTM A240 (t\u1ea5m)\/A312 (\u1ed1ng)\/A276 (thanh)\u201d.<br \/>\n&#8211; Tr\u1ea1ng th\u00e1i b\u1ec1 m\u1eb7t: No.1 (HRAP) cho k\u1ebft c\u1ea5u h\u00e0n; 2B\/No.4 cho l\u1ed9 thi\u00ean th\u1ea9m m\u1ef9.<br \/>\n&#8211; K\u00edch th\u01b0\u1edbc, chi\u1ec1u d\u00e0y danh ngh\u0129a v\u00e0 dung sai (ASTM A480).<br \/>\n&#8211; Y\u00eau c\u1ea7u MTC EN 10204 3.1; PMI 100% cho k\u1ebft c\u1ea5u ch\u00ednh.<br \/>\n&#8211; Quy tr\u00ecnh h\u00e0n: AWS D1.6, que ER316L\/ER2209\u2026; gi\u1edbi h\u1ea1n nhi\u1ec7t nh\u1eadp; x\u1eed l\u00fd sau h\u00e0n theo ASTM A380\/A967.<br \/>\n&#8211; Bu l\u00f4ng\/\u0111ai \u1ed1c: ISO 3506 lo\u1ea1i A4-70\/A4-80 (ven bi\u1ec3n), k\u00e8m ch\u1ea5t b\u00f4i tr\u01a1n ch\u1ed1ng galling.<br \/>\n&#8211; Y\u00eau c\u1ea7u b\u1ea3o v\u1ec7 \u0111i\u1ec7n ho\u00e1 khi gh\u00e9p kh\u00e1c kim lo\u1ea1i (gio\u0103ng, s\u01a1n c\u00e1ch \u0111i\u1ec7n).<br \/>\n&#8211; Ki\u1ec3m tra\u2013NDT m\u1ed1i h\u00e0n theo m\u1ee9c quan tr\u1ecdng (VT, PT; UT\/RT n\u1ebfu y\u00eau c\u1ea7u).<br \/>\n&#8211; K\u1ebf ho\u1ea1ch v\u1ec7 sinh\/b\u1ea3o tr\u00ec \u0111\u1ecbnh k\u1ef3 (\u0111\u1eb7c bi\u1ec7t c\u00f4ng tr\u00ecnh ven bi\u1ec3n).<\/p>\n<h2 id=\"toc-9-case-study-ngan\"><span class=\"ez-toc-section\" id=\"Case_study_ngan\"><\/span>Case study ng\u1eafn<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>&#8211; S\u00e0n thao t\u00e1c nh\u00e0 m\u00e1y ch\u1ebf bi\u1ebfn thu\u1ef7 s\u1ea3n ven bi\u1ec3n mi\u1ec1n Trung:<br \/>\n  &#8211; Ban \u0111\u1ea7u d\u00f9ng 316L d\u00e0y 4 mm, sau 12 th\u00e1ng xu\u1ea5t hi\u1ec7n r\u1ed7 t\u1ea1i khe k\u1ebd kh\u00f4ng tho\u00e1t n\u01b0\u1edbc.<br \/>\n  &#8211; Ph\u01b0\u01a1ng \u00e1n t\u1ed1i \u01b0u: chuy\u1ec3n sang 2205 d\u00e0y 3 mm, thi\u1ebft k\u1ebf l\u1ea1i \u0111\u1ec3 lo\u1ea1i b\u1ecf khe k\u1ebd, th\u00eam l\u1ed7 tho\u00e1t, ho\u00e0n thi\u1ec7n b\u1ec1 m\u1eb7t m\u1ecbn. K\u1ebft qu\u1ea3: kh\u00f4ng r\u1ed7 sau 3 n\u0103m v\u1eadn h\u00e0nh, kh\u1ed1i l\u01b0\u1ee3ng th\u00e9p gi\u1ea3m ~22%, kh\u00f4ng c\u1ea7n s\u01a1n\/ph\u1ee7.<br \/>\n&#8211; Lan can\u2013m\u00e1i che c\u00f4ng c\u1ed9ng H\u00e0 N\u1ed9i (xa bi\u1ec3n): d\u00f9ng 304L \u1ed1ng A554, b\u1ec1 m\u1eb7t No.4, b\u1ed1 tr\u00ed tho\u00e1t n\u01b0\u1edbc t\u1ed1t. Sau 5 n\u0103m, ch\u1ec9 c\u1ea7n r\u1eeda \u0111\u1ecbnh k\u1ef3, kh\u00f4ng ph\u00e1t sinh \u0103n m\u00f2n.<\/p>\n<h2 id=\"toc-10-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; EN 1993-1-4: Eurocode 3 \u2013 Design of steel structures \u2013 Part 1-4: General rules \u2013 Supplementary rules for stainless steels.<br \/>\n&#8211; AISC 370-21: Specification for Structural Stainless Steel Buildings, American Institute of Steel Construction.<br \/>\n&#8211; ASTM A240\/A480 (t\u1ea5m), ASTM A276\/A479 (thanh\/bi\u00ean d\u1ea1ng), ASTM A312 (\u1ed1ng c\u00f4ng nghi\u1ec7p), ASTM A554 (\u1ed1ng c\u01a1 kh\u00ed), ASTM A955 (th\u00e9p g\u00e2n inox).<br \/>\n&#8211; ISO 3506-1\/2: Mechanical properties of corrosion-resistant stainless steel fasteners.<br \/>\n&#8211; AWS D1.6\/D1.6M: Structural Welding Code \u2013 Stainless Steel.<br \/>\n&#8211; The Stainless Steel Structural Design Manual, SCI\/Euro Inox; Nickel Institute technical publications v\u1ec1 \u0103n m\u00f2n v\u00e0 PREN.<\/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>\u0110\u1ec3 ch\u1ecdn inox cho k\u1ebft c\u1ea5u ch\u1ecbu l\u1ef1c an to\u00e0n v\u00e0 kinh t\u1ebf, h\u00e3y:<br \/>\n&#8211; X\u00e1c \u0111\u1ecbnh m\u00f4i tr\u01b0\u1eddng v\u00e0 t\u1ea3i tr\u1ecdng, sau \u0111\u00f3 ch\u1ecdn m\u00e1c theo PREN v\u00e0 y\u00eau c\u1ea7u c\u01a1 t\u00ednh: 304L (n\u1ed9i \u0111\u1ecba), 316L (ven bi\u1ec3n nh\u1eb9), 2205 (bi\u1ec3n\/ho\u00e1 ch\u1ea5t\/t\u1ea3i l\u1edbn), 321\/310S (nhi\u1ec7t cao).<br \/>\n&#8211; Thi\u1ebft k\u1ebf theo ti\u00eau chu\u1ea9n chuy\u00ean bi\u1ec7t cho inox (EN 1993-1-4\/AISC 370), ch\u00fa tr\u1ecdng \u1ed5n \u0111\u1ecbnh, m\u1ecfi v\u00e0 chi ti\u1ebft ho\u00e1 m\u1ed1i n\u1ed1i.<br \/>\n&#8211; Qu\u1ea3n l\u00fd h\u00e0n, ho\u00e0n thi\u1ec7n b\u1ec1 m\u1eb7t, ch\u1ed1ng \u0103n m\u00f2n \u0111i\u1ec7n ho\u00e1 v\u00e0 ki\u1ec3m so\u00e1t ch\u1ea5t l\u01b0\u1ee3ng v\u1eadt li\u1ec7u theo ASTM\/EN.<br \/>\nL\u00e0m \u0111\u00fang c\u00e1c b\u01b0\u1edbc tr\u00ean, b\u1ea1n s\u1ebd c\u00f3 k\u1ebft c\u1ea5u inox b\u1ec1n v\u1eefng, \u00edt b\u1ea3o tr\u00ec v\u00e0 t\u1ed1i \u01b0u chi ph\u00ed v\u00f2ng \u0111\u1eddi.<\/p>\n<p>C\u1ea7n h\u1ed7 tr\u1ee3 ch\u1ecdn m\u00e1c, quy c\u00e1ch, v\u00e0 b\u00e1o gi\u00e1 t\u1ed1t nh\u1ea5t t\u1ea1i H\u00e0 N\u1ed9i? Li\u00ean h\u1ec7 Inox C\u01b0\u1eddng Th\u1ecbnh \u2013 Hotline: 0343.417.281 \u2013 Email: inoxcongnghiep.cuongthinh@gmail.com<\/p>\n","protected":false},"excerpt":{"rendered":"<p>H\u01b0\u1edbng d\u1eabn ch\u1ecdn inox cho k\u1ebft c\u1ea5u ch\u1ecbu l\u1ef1c: 9 ti\u00eau ch\u00ed c\u01a1 t\u00ednh, m\u1ecfi, \u1ed5n \u0111\u1ecbnh, \u0103n m\u00f2n, h\u00e0n\u2013bu l\u00f4ng, nhi\u1ec7t \u0111\u1ed9; m\u00e1c 304\/316L\/2205; checklist \u0111\u1eb7t h\u00e0ng.<\/p>\n","protected":false},"author":7,"featured_media":1026,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[23],"tags":[],"class_list":["post-2550","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\/2550","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=2550"}],"version-history":[{"count":0,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/posts\/2550\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/media\/1026"}],"wp:attachment":[{"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/media?parent=2550"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/categories?post=2550"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/tags?post=2550"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}