{"id":1142,"date":"2025-10-04T12:33:48","date_gmt":"2025-10-04T05:33:48","guid":{"rendered":"https:\/\/inoxcuongthinh.com\/vi-sao-inox-316-la-lua-chon-bat-buoc-cho-du-an-ven-bien\/"},"modified":"2025-10-04T12:33:48","modified_gmt":"2025-10-04T05:33:48","slug":"vi-sao-inox-316-la-lua-chon-bat-buoc-cho-du-an-ven-bien","status":"publish","type":"post","link":"https:\/\/inoxcuongthinh.com\/vi-sao-inox-316-la-lua-chon-bat-buoc-cho-du-an-ven-bien\/","title":{"rendered":"V\u00ec sao Inox 316 l\u00e0 l\u1ef1a ch\u1ecdn b\u1eaft bu\u1ed9c cho d\u1ef1 \u00e1n ven bi\u1ec3n"},"content":{"rendered":"\n\n<div class=\"kk-star-ratings kksr-auto kksr-align-left kksr-valign-top\"\n    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<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\/vi-sao-inox-316-la-lua-chon-bat-buoc-cho-du-an-ven-bien\/#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\/vi-sao-inox-316-la-lua-chon-bat-buoc-cho-du-an-ven-bien\/#Moi_truong_ven_bien_va_co_che_an_mon_can_hieu_dung\" >M\u00f4i tr\u01b0\u1eddng ven bi\u1ec3n v\u00e0 c\u01a1 ch\u1ebf \u0103n m\u00f2n c\u1ea7n hi\u1ec3u \u0111\u00fang<\/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\/vi-sao-inox-316-la-lua-chon-bat-buoc-cho-du-an-ven-bien\/#Dieu_gi_lam_Inox_316_vuot_troi_so_voi_mac_thong_dung\" >\u0110i\u1ec1u g\u00ec l\u00e0m Inox 316 v\u01b0\u1ee3t tr\u1ed9i so v\u1edbi m\u00e1c th\u00f4ng d\u1ee5ng?<\/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\/vi-sao-inox-316-la-lua-chon-bat-buoc-cho-du-an-ven-bien\/#Thanh_phan_va_chi_so_PREN\" >Th\u00e0nh ph\u1ea7n 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-5\" href=\"https:\/\/inoxcuongthinh.com\/vi-sao-inox-316-la-lua-chon-bat-buoc-cho-du-an-ven-bien\/#316_316L_316Ti_%E2%80%93_chon_loai_nao\" >316, 316L, 316Ti \u2013 ch\u1ecdn lo\u1ea1i n\u00e0o?<\/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\/vi-sao-inox-316-la-lua-chon-bat-buoc-cho-du-an-ven-bien\/#Tieu_chuan_vat_lieu_pho_bien\" >Ti\u00eau chu\u1ea9n v\u1eadt li\u1ec7u ph\u1ed5 bi\u1ebfn<\/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\/vi-sao-inox-316-la-lua-chon-bat-buoc-cho-du-an-ven-bien\/#316_so_voi_304_va_cac_lua_chon_thay_the_cao_cap\" >316 so v\u1edbi 304 v\u00e0 c\u00e1c l\u1ef1a ch\u1ecdn thay th\u1ebf cao c\u1ea5p<\/a><\/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\/vi-sao-inox-316-la-lua-chon-bat-buoc-cho-du-an-ven-bien\/#Ung_dung_dien_hinh_cua_316_tai_cong_trinh_ven_bien\" >\u1ee8ng d\u1ee5ng \u0111i\u1ec3n h\u00ecnh c\u1ee7a 316 t\u1ea1i c\u00f4ng tr\u00ecnh ven bi\u1ec3n<\/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\/vi-sao-inox-316-la-lua-chon-bat-buoc-cho-du-an-ven-bien\/#Thiet_ke_thi_cong_dung_de_316_phat_huy_toi_da\" >Thi\u1ebft k\u1ebf &#038; thi c\u00f4ng \u0111\u00fang \u0111\u1ec3 316 ph\u00e1t huy t\u1ed1i \u0111a<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/inoxcuongthinh.com\/vi-sao-inox-316-la-lua-chon-bat-buoc-cho-du-an-ven-bien\/#Lua_chon_be_mat_va_do_nham\" >L\u1ef1a ch\u1ecdn b\u1ec1 m\u1eb7t v\u00e0 \u0111\u1ed9 nh\u00e1m<\/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\/vi-sao-inox-316-la-lua-chon-bat-buoc-cho-du-an-ven-bien\/#Han_lam_sach_va_thu_dong_hoa\" >H\u00e0n, l\u00e0m s\u1ea1ch v\u00e0 th\u1ee5 \u0111\u1ed9ng h\u00f3a<\/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\/vi-sao-inox-316-la-lua-chon-bat-buoc-cho-du-an-ven-bien\/#Thiet_ke_chong_ke_ho_va_thoat_nuoc\" >Thi\u1ebft k\u1ebf ch\u1ed1ng k\u1ebd h\u1edf v\u00e0 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-13\" href=\"https:\/\/inoxcuongthinh.com\/vi-sao-inox-316-la-lua-chon-bat-buoc-cho-du-an-ven-bien\/#An_mon_dien_hoa_va_cach_ly_vat_lieu\" >\u0102n m\u00f2n \u0111i\u1ec7n h\u00f3a v\u00e0 c\u00e1ch ly v\u1eadt li\u1ec7u<\/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\/vi-sao-inox-316-la-lua-chon-bat-buoc-cho-du-an-ven-bien\/#Bu_long_neo_va_phu_kien\" >Bu l\u00f4ng, neo v\u00e0 ph\u1ee5 ki\u1ec7n<\/a><\/li><\/ul><\/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\/vi-sao-inox-316-la-lua-chon-bat-buoc-cho-du-an-ven-bien\/#Bao_tri_chia_khoa_keo_dai_tuoi_tho_va_tham_my\" >B\u1ea3o tr\u00ec: ch\u00eca kh\u00f3a k\u00e9o d\u00e0i tu\u1ed5i th\u1ecd v\u00e0 th\u1ea9m m\u1ef9<\/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\/vi-sao-inox-316-la-lua-chon-bat-buoc-cho-du-an-ven-bien\/#Lua_chon_do_day_dang_san_pham_va_thong_so_thi_cong\" >L\u1ef1a ch\u1ecdn \u0111\u1ed9 d\u00e0y, d\u1ea1ng s\u1ea3n ph\u1ea9m v\u00e0 th\u00f4ng s\u1ed1 thi c\u00f4ng<\/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\/vi-sao-inox-316-la-lua-chon-bat-buoc-cho-du-an-ven-bien\/#Checklist_nhanh_ra_quyet_dinh\" >Checklist nhanh ra quy\u1ebft \u0111\u1ecbnh<\/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\/vi-sao-inox-316-la-lua-chon-bat-buoc-cho-du-an-ven-bien\/#Vi_du_thuc_te_ngan\" >V\u00ed d\u1ee5 th\u1ef1c t\u1ebf ng\u1eafn<\/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\/vi-sao-inox-316-la-lua-chon-bat-buoc-cho-du-an-ven-bien\/#Hoi_dap_nhanh\" >H\u1ecfi \u0111\u00e1p nhanh<\/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\/vi-sao-inox-316-la-lua-chon-bat-buoc-cho-du-an-ven-bien\/#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-moi-truong-ven-bien-va-co-che-an-mon-can-hieu-dung\">M\u00f4i tr\u01b0\u1eddng ven bi\u1ec3n v\u00e0 c\u01a1 ch\u1ebf \u0103n m\u00f2n c\u1ea7n hi\u1ec3u \u0111\u00fang<\/a><\/li>\n<li><a href=\"#toc-1-dieu-gi-lam-inox-316-vuot-troi-so-voi-mac-thong-du\">\u0110i\u1ec1u g\u00ec l\u00e0m Inox 316 v\u01b0\u1ee3t tr\u1ed9i so v\u1edbi m\u00e1c th\u00f4ng d\u1ee5ng?<\/a><\/li>\n<li><a href=\"#toc-2-316-so-voi-304-va-cac-lua-chon-thay-the-cao-cap\">316 so v\u1edbi 304 v\u00e0 c\u00e1c l\u1ef1a ch\u1ecdn thay th\u1ebf cao c\u1ea5p<\/a><\/li>\n<li><a href=\"#toc-3-ung-dung-dien-hinh-cua-316-tai-cong-trinh-ven-bien\">\u1ee8ng d\u1ee5ng \u0111i\u1ec3n h\u00ecnh c\u1ee7a 316 t\u1ea1i c\u00f4ng tr\u00ecnh ven bi\u1ec3n<\/a><\/li>\n<li><a href=\"#toc-4-thiet-ke-thi-cong-dung-de-316-phat-huy-toi-da\">Thi\u1ebft k\u1ebf &#038; thi c\u00f4ng \u0111\u00fang \u0111\u1ec3 316 ph\u00e1t huy t\u1ed1i \u0111a<\/a><\/li>\n<li><a href=\"#toc-5-bao-tri-chia-khoa-keo-dai-tuoi-tho-va-tham-my\">B\u1ea3o tr\u00ec: ch\u00eca kh\u00f3a k\u00e9o d\u00e0i tu\u1ed5i th\u1ecd v\u00e0 th\u1ea9m m\u1ef9<\/a><\/li>\n<li><a href=\"#toc-6-lua-chon-do-day-dang-san-pham-va-thong-so-thi-cong\">L\u1ef1a ch\u1ecdn \u0111\u1ed9 d\u00e0y, d\u1ea1ng s\u1ea3n ph\u1ea9m v\u00e0 th\u00f4ng s\u1ed1 thi c\u00f4ng<\/a><\/li>\n<li><a href=\"#toc-7-checklist-nhanh-ra-quyet-dinh\">Checklist nhanh ra quy\u1ebft \u0111\u1ecbnh<\/a><\/li>\n<li><a href=\"#toc-8-vi-du-thuc-te-ngan\">V\u00ed d\u1ee5 th\u1ef1c t\u1ebf ng\u1eafn<\/a><\/li>\n<li><a href=\"#toc-9-hoi-dap-nhanh\">H\u1ecfi \u0111\u00e1p nhanh<\/a><\/li>\n<li><a href=\"#toc-10-ket-luan\">K\u1ebft lu\u1eadn<\/a><\/li>\n<\/ul>\n<\/div>\n<p>C\u00e1c c\u00f4ng tr\u00ecnh ven bi\u1ec3n ch\u1ecbu t\u00e1c \u0111\u1ed9ng mu\u1ed1i, \u1ea9m v\u00e0 gi\u00f3 mang chloride \u1edf m\u1ee9c kh\u1eafc nghi\u1ec7t nh\u1ea5t. Trong m\u1ecdi h\u01b0\u1edbng d\u1eabn l\u1ef1a ch\u1ecdn inox theo m\u00f4i tr\u01b0\u1eddng, m\u1ee5c \u0111\u00edch v\u00e0 ng\u00e2n s\u00e1ch, Inox 316 lu\u00f4n l\u00e0 chu\u1ea9n \u201cph\u1ea3i c\u00f3\u201d cho khu v\u1ef1c bi\u1ec3n nh\u1edd kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n chloride v\u01b0\u1ee3t tr\u1ed9i. B\u00e0i vi\u1ebft n\u00e0y gi\u1ea3i th\u00edch chi ti\u1ebft v\u00ec sao 316 l\u00e0 l\u1ef1a ch\u1ecdn b\u1eaft bu\u1ed9c, c\u00e1ch ch\u1ecdn \u0111\u00fang m\u00e1c\/\u0111\u1ed9 ho\u00e0n thi\u1ec7n, quy tr\u00ecnh thi c\u00f4ng v\u00e0 b\u1ea3o tr\u00ec \u0111\u1ec3 \u0111\u1ea1t tu\u1ed5i th\u1ecd t\u1ed1i \u01b0u.<\/p>\n<h2 id=\"toc-0-moi-truong-ven-bien-va-co-che-an-mon-can-hieu-dung\"><span class=\"ez-toc-section\" id=\"Moi_truong_ven_bien_va_co_che_an_mon_can_hieu_dung\"><\/span>M\u00f4i tr\u01b0\u1eddng ven bi\u1ec3n v\u00e0 c\u01a1 ch\u1ebf \u0103n m\u00f2n c\u1ea7n hi\u1ec3u \u0111\u00fang<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>&#8211; H\u01a1i mu\u1ed1i v\u00e0 s\u01b0\u01a1ng bi\u1ec3n mang ion chloride (Cl\u2212) b\u00e1m tr\u00ean b\u1ec1 m\u1eb7t kim lo\u1ea1i. Khi \u0111\u1ee7 \u1ea9m, chloride xuy\u00ean ph\u00e1 m\u00e0ng th\u1ee5 \u0111\u1ed9ng c\u1ee7a inox, g\u00e2y r\u1ed7 (pitting) v\u00e0 \u0103n m\u00f2n k\u1ebd h\u1edf (crevice corrosion).<br \/>\n&#8211; Theo ISO 9223, b\u1ea7u kh\u00f4ng kh\u00ed ven bi\u1ec3n th\u01b0\u1eddng thu\u1ed9c C5 \u0111\u1ebfn CX (r\u1ea5t cao \u0111\u1ebfn c\u1ef1c cao), \u0111\u1eb7c bi\u1ec7t trong d\u1ea3i 0\u20131 km t\u1eeb m\u00e9p n\u01b0\u1edbc v\u00e0 v\u00f9ng b\u1eafn t\u00f3e (splash zone).<br \/>\n&#8211; \u1ede Vi\u1ec7t Nam, \u0111\u1ed9 \u1ea9m cao quanh n\u0103m, gi\u00f3 m\u00f9a v\u00e0 aerosol mu\u1ed1i l\u00e0m n\u1eb7ng th\u00eam hi\u1ec7n t\u01b0\u1ee3ng \u201c\u1ed1 tr\u00e0\u201d (tea staining) v\u00e0 r\u1ed7 c\u1ee5c b\u1ed9 tr\u00ean inox kh\u00f4ng ph\u00f9 h\u1ee3p.<\/p>\n<p>K\u1ebft lu\u1eadn k\u1ef9 thu\u1eadt: ch\u1ecdn v\u1eadt li\u1ec7u ph\u1ea3i \u01b0u ti\u00ean kh\u1ea3 n\u0103ng ch\u1ed1ng chloride (pitting\/crevice), kh\u00f4ng ch\u1ec9 \u201cch\u1ed1ng g\u1ec9\u201d chung chung.<\/p>\n<h2 id=\"toc-1-dieu-gi-lam-inox-316-vuot-troi-so-voi-mac-thong-du\"><span class=\"ez-toc-section\" id=\"Dieu_gi_lam_Inox_316_vuot_troi_so_voi_mac_thong_dung\"><\/span>\u0110i\u1ec1u g\u00ec l\u00e0m Inox 316 v\u01b0\u1ee3t tr\u1ed9i so v\u1edbi m\u00e1c th\u00f4ng d\u1ee5ng?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><span class=\"ez-toc-section\" id=\"Thanh_phan_va_chi_so_PREN\"><\/span>Th\u00e0nh ph\u1ea7n v\u00e0 ch\u1ec9 s\u1ed1 PREN<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>&#8211; Inox 316 (EN 1.4401\/1.4404) l\u00e0 th\u00e9p kh\u00f4ng g\u1ec9 austenitic ch\u1ee9a 2.0\u20133.0% Mo (molybdenum), ngo\u00e0i 16\u201318% Cr v\u00e0 10\u201314% Ni. Molypden t\u0103ng c\u01b0\u1eddng m\u1ea1nh kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n chloride.<br \/>\n&#8211; Ch\u1ec9 s\u1ed1 PREN (Pitting Resistance Equivalent Number) \u2248 %Cr + 3.3\u00d7%Mo + 16\u00d7%N.<br \/>\n  \u2022 304: PREN ~ 18\u201319 (kh\u00f4ng c\u00f3 Mo)<br \/>\n  \u2022 316\/316L: PREN ~ 23\u201326 (nh\u1edd 2\u20133% Mo)<br \/>\nPREN cao h\u01a1n ngh\u0129a l\u00e0 ng\u01b0\u1ee1ng kh\u1edfi ph\u00e1t r\u1ed7 chloride cao h\u01a1n \u2013 l\u00fd do 316 \u201ctr\u1ee5\u201d t\u1ed1t t\u1ea1i bi\u1ec3n c\u00f2n 304 nhanh xu\u1ed1ng c\u1ea5p.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"316_316L_316Ti_%E2%80%93_chon_loai_nao\"><\/span>316, 316L, 316Ti \u2013 ch\u1ecdn lo\u1ea1i n\u00e0o?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>&#8211; 316L (EN 1.4404, JIS SUS316L): h\u00e0m l\u01b0\u1ee3ng C th\u1ea5p (\u22640.03%) gi\u00fap ch\u1ed1ng nh\u1ea1y c\u1ea3m h\u00f3a (sensitization) v\u00f9ng \u1ea3nh h\u01b0\u1edfng nhi\u1ec7t khi h\u00e0n, tr\u00e1nh \u0103n m\u00f2n k\u1ebd h\u1edf d\u1ecdc \u0111\u01b0\u1eddng h\u00e0n. L\u1ef1a ch\u1ecdn chu\u1ea9n cho k\u1ebft c\u1ea5u h\u00e0n (lan can, khung, n\u1eb9p).<br \/>\n&#8211; 316 (EN 1.4401, SUS316): ph\u00f9 h\u1ee3p cho chi ti\u1ebft gia c\u00f4ng ngu\u1ed9i, \u00edt h\u00e0n.<br \/>\n&#8211; 316Ti (EN 1.4571): \u1ed5n \u0111\u1ecbnh h\u00f3a b\u1eb1ng Ti cho \u1ee9ng d\u1ee5ng nhi\u1ec7t cao; \u00edt d\u00f9ng cho ki\u1ebfn tr\u00fac ven bi\u1ec3n th\u00f4ng th\u01b0\u1eddng.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Tieu_chuan_vat_lieu_pho_bien\"><\/span>Ti\u00eau chu\u1ea9n v\u1eadt li\u1ec7u ph\u1ed5 bi\u1ebfn<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>&#8211; T\u1ea5m\/cu\u1ed9n: ASTM A240 (316\/316L)<br \/>\n&#8211; \u1ed0ng \u00e1p l\u1ef1c: ASTM A312 (TP316\/316L)<br \/>\n&#8211; \u1ed0ng trang tr\u00ed c\u01a1 kh\u00ed: ASTM A554 (316\/316L)<br \/>\n&#8211; Thanh tr\u00f2n\/th\u00e9p \u0111\u1eb7c: ASTM A276<br \/>\n&#8211; Bu l\u00f4ng\/\u1ed1c v\u00edt: ISO 3506-1\/2 lo\u1ea1i A4 (t\u01b0\u01a1ng \u0111\u01b0\u01a1ng 316), c\u1ea5p b\u1ec1n A4-70\/A4-80<\/p>\n<h2 id=\"toc-2-316-so-voi-304-va-cac-lua-chon-thay-the-cao-cap\"><span class=\"ez-toc-section\" id=\"316_so_voi_304_va_cac_lua_chon_thay_the_cao_cap\"><\/span>316 so v\u1edbi 304 v\u00e0 c\u00e1c l\u1ef1a ch\u1ecdn thay th\u1ebf cao c\u1ea5p<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>&#8211; So v\u1edbi 304: 316 ch\u1ed1ng r\u1ed7\/\u1ed1 tr\u00e0 v\u01b0\u1ee3t tr\u1ed9i trong s\u01b0\u01a1ng mu\u1ed1i. 304 th\u01b0\u1eddng x\u1ec9n m\u00e0u v\u00e0 r\u1ec9 n\u00e2u sau v\u00e0i th\u00e1ng \u1edf <1 km t\u1eeb bi\u1ec3n, \u0111\u1eb7c bi\u1ec7t \u1edf k\u1ebd h\u1edf v\u00e0 v\u00f9ng h\u00e0n.  \n- Khi n\u00e0o c\u1ea7n h\u01a1n 316?  \n  \u2022 V\u00f9ng b\u1eafn t\u00f3e tr\u1ef1c ti\u1ebfp, ng\u1eadp m\u1eb7n ho\u1eb7c khe k\u1eb9p k\u00edn kh\u00f3 r\u1eeda: c\u00e2n nh\u1eafc duplex 2205 (PREN ~ 34\u201337) ho\u1eb7c si\u00eau austenitic 904L\/6Mo.  \n  \u2022 V\u1edbi ti\u1ebfp x\u00fac ng\u00e2m n\u01b0\u1edbc bi\u1ec3n li\u00ean t\u1ee5c, 316 c\u00f3 th\u1ec3 b\u1ecb crevice\/pitting n\u1ebfu kh\u00f4ng x\u1eed l\u00fd b\u1ec1 m\u1eb7t v\u00e0 thi\u1ebft k\u1ebf k\u1ebd h\u1edf t\u1ed1t.  \n- Khi n\u00e0o c\u00f3 th\u1ec3 d\u00f9ng 304?  \n  \u2022 Tr\u00ean 5\u201310 km c\u00e1ch b\u1edd bi\u1ec3n, \u00edt aerosol mu\u1ed1i, c\u00f3 b\u1ea3o tr\u00ec r\u1eeda \u0111\u1ecbnh k\u1ef3; tuy nhi\u00ean r\u1ee7i ro th\u1ea9m m\u1ef9 v\u1eabn cao. V\u1edbi d\u1ef1 \u00e1n ki\u1ebfn tr\u00fac\/du l\u1ecbch bi\u1ec3n, n\u00ean ch\u1ecdn 316 \u0111\u1ec3 b\u1ea3o \u0111\u1ea3m.\n\n\n\n<h2 id=\"toc-3-ung-dung-dien-hinh-cua-316-tai-cong-trinh-ven-bien\"><span class=\"ez-toc-section\" id=\"Ung_dung_dien_hinh_cua_316_tai_cong_trinh_ven_bien\"><\/span>\u1ee8ng d\u1ee5ng \u0111i\u1ec3n h\u00ecnh c\u1ee7a 316 t\u1ea1i c\u00f4ng tr\u00ecnh ven bi\u1ec3n<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>&#8211; Lan can, tay v\u1ecbn, h\u00e0ng r\u00e0o, m\u00e1i che, lam trang tr\u00ed m\u1eb7t \u0111\u1ee9ng.<br \/>\n&#8211; Bu l\u00f4ng neo, ph\u1ee5 ki\u1ec7n k\u1ebft c\u1ea5u nh\u00f4m-k\u00ednh, k\u1eb9p k\u00ednh, spider.<br \/>\n&#8211; Thang m\u00e1ng c\u00e1p, \u1ed1ng th\u00f4ng gi\u00f3 ngo\u00e0i tr\u1eddi, n\u1eb9p trang tr\u00ed.<br \/>\n&#8211; Thi\u1ebft b\u1ecb x\u1eed l\u00fd n\u01b0\u1edbc, b\u1ec3 b\u01a1i n\u01b0\u1edbc m\u1eb7n, khu resort s\u00e1t bi\u1ec3n.<br \/>\n&#8211; C\u1ea7u c\u1ea3ng, b\u1ebfn du thuy\u1ec1n: t\u1ed1i thi\u1ec3u 316L, \u01b0u ti\u00ean b\u1ec1 m\u1eb7t cao v\u00e0 c\u00e1ch k\u1ebd h\u1edf t\u1ed1t.<\/p>\n<h2 id=\"toc-4-thiet-ke-thi-cong-dung-de-316-phat-huy-toi-da\"><span class=\"ez-toc-section\" id=\"Thiet_ke_thi_cong_dung_de_316_phat_huy_toi_da\"><\/span>Thi\u1ebft k\u1ebf &#038; thi c\u00f4ng \u0111\u00fang \u0111\u1ec3 316 ph\u00e1t huy t\u1ed1i \u0111a<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><span class=\"ez-toc-section\" id=\"Lua_chon_be_mat_va_do_nham\"><\/span>L\u1ef1a ch\u1ecdn b\u1ec1 m\u1eb7t v\u00e0 \u0111\u1ed9 nh\u00e1m<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>&#8211; B\u1ec1 m\u1eb7t c\u00e0ng m\u1ecbn c\u00e0ng ch\u1ed1ng r\u1ed7 chloride t\u1ed1t. Khuy\u1ebfn ngh\u1ecb:<br \/>\n  \u2022 \u0110\u1ed9 nh\u00e1m Ra \u2264 0.8 \u03bcm cho h\u1ea1ng m\u1ee5c ngo\u00e0i tr\u1eddi s\u00e1t bi\u1ec3n.<br \/>\n  \u2022 Ho\u00e0n thi\u1ec7n: No.4 m\u1ecbn, Hairline m\u1ecbn, bead-blast m\u1ecbn h\u1ea1t nh\u1ecf; t\u1ed1t nh\u1ea5t l\u00e0 \u0111\u00e1nh b\u00f3ng c\u01a1 ho\u1eb7c \u0111i\u1ec7n h\u00f3a (electropolish) cho tay v\u1ecbn\/lan can.<br \/>\n&#8211; Tr\u00e1nh x\u01b0\u1edbc s\u00e2u, v\u1ebft m\u00e0i, g\u00f3c c\u1ea1nh s\u1eafc v\u00e0 k\u1ebd h\u1edf \u2013 \u0111\u00f3 l\u00e0 n\u01a1i gi\u1eef mu\u1ed1i\/\u1ea9m, d\u1ec5 r\u1ed7.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Han_lam_sach_va_thu_dong_hoa\"><\/span>H\u00e0n, l\u00e0m s\u1ea1ch v\u00e0 th\u1ee5 \u0111\u1ed9ng h\u00f3a<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>&#8211; D\u00f9ng d\u00e2y\/que h\u00e0n 316L (ER\/E316L). H\u1ea1n ch\u1ebf nhi\u1ec7t \u0111\u1ea7u v\u00e0o qu\u00e1 cao; l\u00e0m m\u00e1t gi\u1eefa c\u00e1c pass.<br \/>\n&#8211; B\u1eaft bu\u1ed9c t\u1ea9y m\u1ed1i h\u00e0n (pickling) v\u00e0 th\u1ee5 \u0111\u1ed9ng h\u00f3a \u0111\u1ec3 t\u00e1i t\u1ea1o m\u00e0ng Cr2O3. Kh\u00f4ng b\u1ecf qua b\u01b0\u1edbc r\u1eeda s\u1ea1ch h\u00f3a ch\u1ea5t v\u00e0 trung h\u00f2a.<br \/>\n&#8211; Tr\u00e1nh nhi\u1ec5m b\u1ea9n s\u1eaft: d\u00f9ng d\u1ee5ng c\u1ee5 ri\u00eang cho inox (b\u00e0n ch\u1ea3i th\u00e9p kh\u00f4ng g\u1ec9, v\u1ea3i nh\u00e1m ri\u00eang), kh\u00f4ng \u0111\u1ec3 m\u1ea1t th\u00e9p carbon b\u00e1m b\u1ec1 m\u1eb7t.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Thiet_ke_chong_ke_ho_va_thoat_nuoc\"><\/span>Thi\u1ebft k\u1ebf ch\u1ed1ng k\u1ebd h\u1edf v\u00e0 tho\u00e1t n\u01b0\u1edbc<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>&#8211; Tr\u00e1nh ch\u1ed3ng m\u00ed k\u00edn, khe h\u1eb9p, gio\u0103ng h\u00fat \u1ea9m; \u0111\u1ea3m b\u1ea3o tho\u00e1t n\u01b0\u1edbc nhanh, c\u00f3 \u0111\u1ed9 d\u1ed1c b\u1ec1 m\u1eb7t.<br \/>\n&#8211; D\u00f9ng keo\/\u0111\u1ec7m kh\u00f4ng ch\u1ee9a chloride. C\u00e1c m\u1ed1i gh\u00e9p n\u00ean th\u00f4ng tho\u00e1ng, d\u1ec5 r\u1eeda.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"An_mon_dien_hoa_va_cach_ly_vat_lieu\"><\/span>\u0102n m\u00f2n \u0111i\u1ec7n h\u00f3a v\u00e0 c\u00e1ch ly v\u1eadt li\u1ec7u<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>&#8211; C\u00e1ch ly 316 v\u1edbi nh\u00f4m, th\u00e9p carbon, th\u00e9p m\u1ea1 k\u1ebdm b\u1eb1ng \u0111\u1ec7m nh\u1ef1a\/EPDM, v\u00f2ng c\u00e1ch \u0111i\u1ec7n, b\u0103ng keo c\u00e1ch \u0111i\u1ec7n \u0111\u1ec3 tr\u00e1nh pin \u0111i\u1ec7n h\u00f3a trong m\u00f4i tr\u01b0\u1eddng \u1ea9m m\u1eb7n.<br \/>\n&#8211; Kh\u00f4ng tr\u1ed9n \u1ed1c v\u00edt A2 (304) v\u1edbi chi ti\u1ebft 316 \u2013 \u1ed1c v\u00edt y\u1ebfu s\u1ebd l\u00e0 \u0111i\u1ec3m h\u1ecfng \u0111\u1ea7u ti\u00ean.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Bu_long_neo_va_phu_kien\"><\/span>Bu l\u00f4ng, neo v\u00e0 ph\u1ee5 ki\u1ec7n<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>&#8211; \u01afu ti\u00ean ISO 3506 lo\u1ea1i A4-70\/A4-80. V\u1edbi neo h\u00f3a ch\u1ea5t, d\u00f9ng \u1ed1ng l\u01b0\u1edbi v\u00e0 keo t\u01b0\u01a1ng th\u00edch m\u00f4i tr\u01b0\u1eddng m\u1eb7n; v\u1edbi neo c\u01a1, ch\u1ecdn n\u00eam\/\u0111inh 316.<br \/>\n&#8211; D\u00f9ng m\u1ee1 b\u00f4i tr\u01a1n t\u01b0\u01a1ng th\u00edch inox \u0111\u1ec3 h\u1ea1n ch\u1ebf k\u1eb9t ren (galling).<\/p>\n<h2 id=\"toc-5-bao-tri-chia-khoa-keo-dai-tuoi-tho-va-tham-my\"><span class=\"ez-toc-section\" id=\"Bao_tri_chia_khoa_keo_dai_tuoi_tho_va_tham_my\"><\/span>B\u1ea3o tr\u00ec: ch\u00eca kh\u00f3a k\u00e9o d\u00e0i tu\u1ed5i th\u1ecd v\u00e0 th\u1ea9m m\u1ef9<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>&#8211; R\u1eeda n\u01b0\u1edbc ng\u1ecdt \u0111\u1ec3 lo\u1ea1i mu\u1ed1i \u0111\u1ecdng:<br \/>\n  \u2022 0\u2013200 m t\u1eeb bi\u1ec3n: h\u00e0ng tu\u1ea7n \u0111\u1ebfn 2 tu\u1ea7n\/l\u1ea7n.<br \/>\n  \u2022 200 m\u20131 km: m\u1ed7i th\u00e1ng.<br \/>\n  \u2022 1\u20135 km: 1\u20133 th\u00e1ng\/l\u1ea7n.<br \/>\n&#8211; D\u00f9ng ch\u1ea5t t\u1ea9y pH trung t\u00ednh, kh\u00f4ng ch\u1ee9a chloride\/halogen. Tr\u00e1nh len th\u00e9p carbon, b\u1ed9t m\u00e0i th\u00f4.<br \/>\n&#8211; X\u1eed l\u00fd \u201c\u1ed1 tr\u00e0\u201d: ch\u00e0 nh\u1eb9 v\u1edbi dung d\u1ecbch chuy\u00ean d\u1ee5ng cho inox, sau \u0111\u00f3 th\u1ee5 \u0111\u1ed9ng h\u00f3a t\u1ea1i ch\u1ed7.<br \/>\n&#8211; Ki\u1ec3m tra \u0111\u1ecbnh k\u1ef3 k\u1ebd h\u1edf, m\u1ed1i h\u00e0n, \u1ed1c v\u00edt, khu v\u1ef1c kh\u00f3 r\u1eeda. S\u1eeda ch\u1eefa s\u1edbm \u0111\u1ec3 tr\u00e1nh ph\u00e1t tri\u1ec3n r\u1ed7 s\u00e2u.<\/p>\n<p>Tu\u1ed5i th\u1ecd tham chi\u1ebfu: trong kh\u00ed quy\u1ec3n ven bi\u1ec3n (kh\u00f4ng ng\u1eadp m\u1eb7n, thi\u1ebft k\u1ebf \u0111\u00fang, b\u1ec1 m\u1eb7t m\u1ecbn, b\u1ea3o tr\u00ec \u0111\u1ec1u), 316\/316L c\u00f3 th\u1ec3 \u0111\u1ea1t 15\u201325+ n\u0103m v\u1edbi th\u1ea9m m\u1ef9 t\u1ed1t; electropolish v\u00e0 thi\u1ebft k\u1ebf ch\u1ed1ng k\u1ebd h\u1edf c\u00f3 th\u1ec3 k\u00e9o d\u00e0i h\u01a1n \u0111\u00e1ng k\u1ec3.<\/p>\n<h2 id=\"toc-6-lua-chon-do-day-dang-san-pham-va-thong-so-thi-cong\"><span class=\"ez-toc-section\" id=\"Lua_chon_do_day_dang_san_pham_va_thong_so_thi_cong\"><\/span>L\u1ef1a ch\u1ecdn \u0111\u1ed9 d\u00e0y, d\u1ea1ng s\u1ea3n ph\u1ea9m v\u00e0 th\u00f4ng s\u1ed1 thi c\u00f4ng<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>&#8211; T\u1ea5m\/\u1ed1p m\u1eb7t \u0111\u1ee9ng: 1.5\u20133.0 mm t\u00f9y kh\u1ea9u \u0111\u1ed9 v\u00e0 t\u1ea3i gi\u00f3; d\u00f9ng A240 316L n\u1ebfu c\u00f3 h\u00e0n\/gh\u00e9p.<br \/>\n&#8211; \u1ed0ng c\u01a1 kh\u00ed cho lan can\/tay v\u1ecbn (A554 316\/316L): \u00d838\u201351 mm, chi\u1ec1u d\u00e0y 1.2\u20132.0 mm; tay v\u1ecbn ngo\u00e0i tr\u1eddi \u01b0u ti\u00ean 1.5\u20132.0 mm \u0111\u1ec3 ch\u1ecbu va \u0111\u1eadp v\u00e0 m\u00e0i m\u00f2n.<br \/>\n&#8211; Thanh, b\u1ea3n m\u00e3 (A276 316\/316L): ch\u1ecdn chi\u1ec1u d\u00e0y \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 c\u1ee9ng; b\u1ec1 m\u1eb7t m\u00e0i m\u1ecbn.<br \/>\n&#8211; \u1ed0c v\u00edt\/ph\u1ee5 ki\u1ec7n: A4-70\/A4-80; long \u0111en, \u1ed1p ch\u1ee5p b\u1eb1ng 316; \u0111\u1ec7m EPDM\/PA c\u00e1ch ly \u0111i\u1ec7n h\u00f3a.<\/p>\n<p>L\u01b0u \u00fd kinh t\u1ebf: 316 th\u01b0\u1eddng \u0111\u1eaft h\u01a1n 304 kho\u1ea3ng 20\u201340% t\u00f9y th\u1eddi \u0111i\u1ec3m th\u1ecb tr\u01b0\u1eddng. Tuy nhi\u00ean TCO th\u1ea5p h\u01a1n r\u00f5 r\u1ec7t t\u1ea1i bi\u1ec3n nh\u1edd gi\u1ea3m thay th\u1ebf, b\u1ea3o h\u00e0nh v\u00e0 chi ph\u00ed b\u1ea3o tr\u00ec.<\/p>\n<h2 id=\"toc-7-checklist-nhanh-ra-quyet-dinh\"><span class=\"ez-toc-section\" id=\"Checklist_nhanh_ra_quyet_dinh\"><\/span>Checklist nhanh ra quy\u1ebft \u0111\u1ecbnh<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>&#8211; C\u00e1ch bi\u1ec3n \u2264 5 km ho\u1eb7c trong khu du l\u1ecbch bi\u1ec3n? Ch\u1ecdn 316; n\u1ebfu 0\u2013200 m, c\u00e2n nh\u1eafc electropolish.<br \/>\n&#8211; C\u00f3 h\u00e0n? D\u00f9ng 316L + pickling + passivation.<br \/>\n&#8211; C\u00f3 k\u1ebd h\u1edf\/\u0111i\u1ec3m gi\u1eef mu\u1ed1i? Thi\u1ebft k\u1ebf l\u1ea1i \u0111\u1ec3 tho\u00e1t n\u01b0\u1edbc; d\u00f9ng \u0111\u1ec7m kh\u00f4ng h\u00fat \u1ea9m.<br \/>\n&#8211; Ph\u1ee5 ki\u1ec7n? \u0110\u1ed3ng b\u1ed9 A4-70\/A4-80; c\u00e1ch ly kh\u1ecfi nh\u00f4m\/th\u00e9p carbon.<br \/>\n&#8211; K\u1ebf ho\u1ea1ch b\u1ea3o tr\u00ec? L\u1eadp l\u1ecbch r\u1eeda n\u01b0\u1edbc ng\u1ecdt v\u00e0 ki\u1ec3m tra \u0111\u1ecbnh k\u1ef3.<\/p>\n<h2 id=\"toc-8-vi-du-thuc-te-ngan\"><span class=\"ez-toc-section\" id=\"Vi_du_thuc_te_ngan\"><\/span>V\u00ed d\u1ee5 th\u1ef1c t\u1ebf ng\u1eafn<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>M\u1ed9t d\u1ef1 \u00e1n lan can b\u1edd bi\u1ec3n \u0110\u00e0 N\u1eb5ng d\u00f9ng 304 hairline cho tay v\u1ecbn c\u00e1ch m\u00e9p n\u01b0\u1edbc ~150 m. Sau 6\u20138 th\u00e1ng xu\u1ea5t hi\u1ec7n \u1ed1 tr\u00e0 lan r\u1ed9ng v\u00e0 r\u1ed7 t\u1ea1i m\u1ed1i gh\u00e9p. H\u1ea1ng m\u1ee5c \u0111\u01b0\u1ee3c thay b\u1eb1ng 316L d\u00e0y 1.5 mm, electropolish to\u00e0n b\u1ed9, bu l\u00f4ng A4-80, th\u00eam \u0111\u1ec7m c\u00e1ch ly nh\u1ef1a. Sau 24 th\u00e1ng, ch\u1ec9 c\u1ea7n r\u1eeda n\u01b0\u1edbc ng\u1ecdt \u0111\u1ecbnh k\u1ef3, b\u1ec1 m\u1eb7t v\u1eabn s\u00e1ng, kh\u00f4ng r\u1ed7.<\/p>\n<h2 id=\"toc-9-hoi-dap-nhanh\"><span class=\"ez-toc-section\" id=\"Hoi_dap_nhanh\"><\/span>H\u1ecfi \u0111\u00e1p nhanh<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>&#8211; 304 c\u00f3 d\u00f9ng \u0111\u01b0\u1ee3c \u1edf ven bi\u1ec3n kh\u00f4ng? C\u00f3 r\u1ee7i ro cao v\u1ec1 \u1ed1 tr\u00e0\/r\u1ed7 trong 1 km t\u1eeb bi\u1ec3n. Cho ki\u1ebfn tr\u00fac ngo\u00e0i tr\u1eddi, n\u00ean d\u00f9ng 316.<br \/>\n&#8211; 316 c\u00f3 b\u1ecb r\u1ec9 n\u00e2u kh\u00f4ng? C\u00f3 th\u1ec3 xu\u1ea5t hi\u1ec7n \u1ed1 tr\u00e0 n\u1ebfu b\u1ec1 m\u1eb7t th\u00f4, b\u1ea9n mu\u1ed1i ho\u1eb7c b\u1ecb nhi\u1ec5m s\u1eaft. X\u1eed l\u00fd b\u1eb1ng v\u1ec7 sinh + th\u1ee5 \u0111\u1ed9ng h\u00f3a v\u00e0 c\u1ea3i thi\u1ec7n ho\u00e0n thi\u1ec7n b\u1ec1 m\u1eb7t.<br \/>\n&#8211; 316 ng\u1eadp n\u01b0\u1edbc bi\u1ec3n li\u00ean t\u1ee5c c\u00f3 \u1ed5n? 316 ch\u1ecbu t\u1ed1t h\u01a1n 304 nh\u01b0ng v\u1eabn c\u00f3 nguy c\u01a1 r\u1ed7 k\u1ebd; xem x\u00e9t duplex 2205\/si\u00eau austenitic cho ng\u1eadp m\u1eb7n\/splash kh\u1eafc nghi\u1ec7t.<br \/>\n&#8211; 316 c\u00f3 nhi\u1ec5m t\u1eeb kh\u00f4ng? 316 l\u00e0 austenitic, c\u01a1 b\u1ea3n kh\u00f4ng nhi\u1ec5m t\u1eeb; nh\u01b0ng gia c\u00f4ng ngu\u1ed9i c\u00f3 th\u1ec3 t\u1ea1o nhi\u1ec5m t\u1eeb nh\u1eb9 c\u1ee5c b\u1ed9.<br \/>\n&#8211; Ch\u00eanh l\u1ec7ch gi\u00e1 316 so v\u1edbi 304? Th\u01b0\u1eddng cao h\u01a1n 20\u201340%, b\u00f9 l\u1ea1i tu\u1ed5i th\u1ecd v\u00e0 th\u1ea9m m\u1ef9 v\u01b0\u1ee3t tr\u1ed9i trong m\u00f4i tr\u01b0\u1eddng bi\u1ec3n.<\/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>Inox 316 l\u00e0 l\u1ef1a ch\u1ecdn b\u1eaft bu\u1ed9c cho c\u00f4ng tr\u00ecnh ven bi\u1ec3n v\u00ec kh\u1ea3 n\u0103ng ch\u1ed1ng chloride v\u01b0\u1ee3t tr\u1ed9i nh\u1edd 2\u20133% Mo v\u00e0 PREN cao, \u0111\u1eb7c bi\u1ec7t khi ch\u1ecdn \u0111\u00fang bi\u1ebfn th\u1ec3 316L cho h\u00e0n, ho\u00e0n thi\u1ec7n b\u1ec1 m\u1eb7t m\u1ecbn ho\u1eb7c electropolish, v\u00e0 tu\u00e2n th\u1ee7 thi\u1ebft k\u1ebf ch\u1ed1ng k\u1ebd h\u1edf \u2013 c\u00e1ch ly \u0111i\u1ec7n h\u00f3a. So v\u1edbi 304, 316 gi\u1ea3m m\u1ea1nh r\u1ee7i ro \u1ed1 tr\u00e0 v\u00e0 r\u1ed7, t\u1ed1i \u01b0u chi ph\u00ed v\u00f2ng \u0111\u1eddi cho d\u1ef1 \u00e1n. V\u1edbi v\u00f9ng b\u1eafn t\u00f3e\/ng\u1eadp m\u1eb7n kh\u1eafc nghi\u1ec7t, h\u00e3y c\u00e2n nh\u1eafc n\u00e2ng c\u1ea5p l\u00ean duplex ho\u1eb7c si\u00eau austenitic. Ch\u1ecdn \u0111\u00fang v\u1eadt li\u1ec7u, thi c\u00f4ng \u0111\u00fang k\u1ef9 thu\u1eadt v\u00e0 b\u1ea3o tr\u00ec \u0111\u1ecbnh k\u1ef3 s\u1ebd gi\u00fap h\u1ea1ng m\u1ee5c ven bi\u1ec3n v\u1eadn h\u00e0nh b\u1ec1n \u0111\u1eb9p h\u00e0ng th\u1eadp k\u1ef7.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Inox 316 ch\u1ed1ng r\u1ed7 pitting nh\u1edd 2\u20133% Mo, b\u1ec1n mu\u1ed1i bi\u1ec3n v\u01b0\u1ee3t tr\u1ed9i 304. H\u01b0\u1edbng d\u1eabn ch\u1ecdn 316\/316L, b\u1ec1 m\u1eb7t, ph\u1ee5 ki\u1ec7n A4, thi c\u00f4ng v\u00e0 b\u1ea3o tr\u00ec ven bi\u1ec3n.<\/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-1142","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\/1142","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=1142"}],"version-history":[{"count":0,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/posts\/1142\/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=1142"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/categories?post=1142"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/tags?post=1142"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}