{"id":1596,"date":"2026-01-26T00:33:59","date_gmt":"2026-01-25T17:33:59","guid":{"rendered":"https:\/\/inoxcuongthinh.com\/chon-inox-ngoai-troi-cho-khi-hau-nong-am-mien-bac\/"},"modified":"2026-01-26T00:33:59","modified_gmt":"2026-01-25T17:33:59","slug":"chon-inox-ngoai-troi-cho-khi-hau-nong-am-mien-bac","status":"publish","type":"post","link":"https:\/\/inoxcuongthinh.com\/chon-inox-ngoai-troi-cho-khi-hau-nong-am-mien-bac\/","title":{"rendered":"Ch\u1ecdn inox ngo\u00e0i tr\u1eddi cho kh\u00ed h\u1eadu n\u00f3ng \u1ea9m mi\u1ec1n B\u1eafc"},"content":{"rendered":"<div class=\"custom-toc\">\n<h3>N\u1ed9i dung ch\u00ednh<\/h3>\n<ul>\n<li><a href=\"#toc-0-dac-trung-moi-truong-ngoai-troi-mien-bac-va-tac-do\">\u0110\u1eb7c tr\u01b0ng m\u00f4i tr\u01b0\u1eddng ngo\u00e0i tr\u1eddi mi\u1ec1n B\u1eafc v\u00e0 t\u00e1c \u0111\u1ed9ng l\u00ean inox<\/a><\/li>\n<li><a href=\"#toc-1-nguyen-tac-chon-mac-inox-theo-muc-do-moi-truong\">Nguy\u00ean t\u1eafc ch\u1ecdn m\u00e1c inox theo m\u1ee9c \u0111\u1ed9 m\u00f4i tr\u01b0\u1eddng<\/a><\/li>\n<li><a href=\"#toc-2-so-sanh-nhanh-cac-mac-inox-pho-bien\">So s\u00e1nh nhanh c\u00e1c m\u00e1c inox ph\u1ed5 bi\u1ebfn<\/a><\/li>\n<li><a href=\"#toc-3-lua-chon-theo-hang-muc-cong-trinh\">L\u1ef1a ch\u1ecdn theo h\u1ea1ng m\u1ee5c c\u00f4ng tr\u00ecnh<\/a><\/li>\n<li><a href=\"#toc-4-hoan-thien-be-mat-va-gia-cong-quyet-dinh-tuoi-tho\">Ho\u00e0n thi\u1ec7n b\u1ec1 m\u1eb7t v\u00e0 gia c\u00f4ng quy\u1ebft \u0111\u1ecbnh tu\u1ed5i th\u1ecd<\/a><\/li>\n<li><a href=\"#toc-5-thiet-ke-chong-an-mon-thong-minh\">Thi\u1ebft k\u1ebf ch\u1ed1ng \u0103n m\u00f2n th\u00f4ng minh<\/a><\/li>\n<li><a href=\"#toc-6-bao-tri-va-ve-sinh-theo-moi-truong\">B\u1ea3o tr\u00ec v\u00e0 v\u1ec7 sinh theo m\u00f4i tr\u01b0\u1eddng<\/a><\/li>\n<li><a href=\"#toc-7-chi-phi-va-bai-toan-vong-doi\">Chi ph\u00ed v\u00e0 b\u00e0i to\u00e1n v\u00f2ng \u0111\u1eddi<\/a><\/li>\n<li><a href=\"#toc-8-quy-trinh-5-buoc-chon-inox-cho-cong-trinh-ngoai-tr\">Quy tr\u00ecnh 5 b\u01b0\u1edbc ch\u1ecdn inox cho c\u00f4ng tr\u00ecnh ngo\u00e0i tr\u1eddi mi\u1ec1n B\u1eafc<\/a><\/li>\n<li><a href=\"#toc-9-vi-du-ap-dung-nhanh\">V\u00ed d\u1ee5 \u00e1p d\u1ee5ng nhanh<\/a><\/li>\n<li><a href=\"#toc-10-tieu-chuan-va-chung-tu-nen-yeu-cau\">Ti\u00eau chu\u1ea9n v\u00e0 ch\u1ee9ng t\u1eeb n\u00ean y\u00eau c\u1ea7u<\/a><\/li>\n<li><a href=\"#toc-11-nguon-tham-khao-ky-thuat\">Ngu\u1ed3n tham kh\u1ea3o k\u1ef9 thu\u1eadt<\/a><\/li>\n<li><a href=\"#toc-12-ket-luan\">K\u1ebft lu\u1eadn<\/a><\/li>\n<\/ul>\n<\/div>\n<p>Mi\u1ec1n B\u1eafc Vi\u1ec7t Nam n\u00f3ng \u1ea9m, m\u01b0a nhi\u1ec1u, kh\u00f4ng kh\u00ed \u00f4 nhi\u1ec5m h\u01a1n \u1edf \u0111\u00f4 th\u1ecb v\u00e0 c\u00f3 \u1ea3nh h\u01b0\u1edfng mu\u1ed1i t\u1ea1i Qu\u1ea3ng Ninh\u2013H\u1ea3i Ph\u00f2ng. \u0110\u00e2y l\u00e0 m\u00f4i tr\u01b0\u1eddng kh\u1eafc nghi\u1ec7t v\u1edbi inox khi l\u1eafp \u0111\u1eb7t ngo\u00e0i tr\u1eddi: d\u1ec5 b\u1ecb \u0103n m\u00f2n k\u1ebd h\u1edf (crevice), r\u1ed7 (pitting) v\u00e0 \u201c\u1ed1 tr\u00e0\u201d (tea staining). B\u00e0i vi\u1ebft n\u00e0y cung c\u1ea5p h\u01b0\u1edbng d\u1eabn \u0111\u1ea7y \u0111\u1ee7 \u0111\u1ec3 ch\u1ecdn m\u00e1c inox, b\u1ec1 m\u1eb7t, chi ti\u1ebft thi\u1ebft k\u1ebf v\u00e0 b\u1ea3o tr\u00ec ph\u00f9 h\u1ee3p cho c\u00f4ng tr\u00ecnh ngo\u00e0i tr\u1eddi \u1edf mi\u1ec1n B\u1eafc. N\u1ed9i dung l\u00e0 m\u1ed9t ph\u1ea7n tr\u1ecdng y\u1ebfu c\u1ee7a b\u00e0i to\u00e1n \u201cch\u1ecdn inox theo m\u00f4i tr\u01b0\u1eddng, m\u1ee5c \u0111\u00edch v\u00e0 ng\u00e2n s\u00e1ch\u201d, nh\u01b0ng \u0111\u01b0\u1ee3c tr\u00ecnh b\u00e0y \u0111\u1ed9c l\u1eadp \u0111\u1ec3 b\u1ea1n c\u00f3 th\u1ec3 \u00e1p d\u1ee5ng ngay.<\/p>\n<h2 id=\"toc-0-dac-trung-moi-truong-ngoai-troi-mien-bac-va-tac-do\">\u0110\u1eb7c tr\u01b0ng m\u00f4i tr\u01b0\u1eddng ngo\u00e0i tr\u1eddi mi\u1ec1n B\u1eafc v\u00e0 t\u00e1c \u0111\u1ed9ng l\u00ean inox<\/h2>\n<p>&#8211; \u0110\u1ed9 \u1ea9m cao quanh n\u0103m, m\u00f9a m\u01b0a k\u00e9o d\u00e0i, chu k\u1ef3 \u01b0\u1edbt\/kh\u00f4 li\u00ean t\u1ee5c \u0111\u1ea9y nhanh \u0103n m\u00f2n c\u1ee5c b\u1ed9.<br \/>\n&#8211; \u00d4 nhi\u1ec5m \u0111\u00f4 th\u1ecb (SOx\/NOx, b\u1ee5i m\u1ecbn) g\u00e2y m\u01b0a axit, th\u00fac \u0111\u1ea9y \u201c\u1ed1 tr\u00e0\u201d tr\u00ean b\u1ec1 m\u1eb7t \u0111\u00e1nh x\u01b0\u1edbc (No.4).<br \/>\n&#8211; \u1ea2nh h\u01b0\u1edfng mu\u1ed1i gi\u00f3 bi\u1ec3n t\u1ea1i H\u1ea3i Ph\u00f2ng, Qu\u1ea3ng Ninh, Th\u00e1i B\u00ecnh duy\u00ean h\u1ea3i; ion chloride l\u00e0 t\u00e1c nh\u00e2n tr\u1ef1c ti\u1ebfp g\u00e2y r\u1ed7.<br \/>\n&#8211; B\u1ee5i s\u1eaft t\u1eeb c\u00f4ng tr\u01b0\u1eddng\/c\u01a1 kh\u00ed b\u00e1m l\u00ean inox l\u00e0m m\u1ed3i \u0103n m\u00f2n n\u1ebfu kh\u00f4ng \u0111\u01b0\u1ee3c v\u1ec7 sinh.<\/p>\n<p>H\u1ec7 qu\u1ea3: inox c\u1ea5p th\u1ea5p (201, 430) suy gi\u1ea3m nhanh; ngay c\u1ea3 304 c\u0169ng \u1ed1 m\u00e0u n\u1ebfu thi\u1ebft k\u1ebf b\u1ec1 m\u1eb7t, chi ti\u1ebft tho\u00e1t n\u01b0\u1edbc v\u00e0 b\u1ea3o tr\u00ec kh\u00f4ng \u0111\u00fang chu\u1ea9n.<\/p>\n<h2 id=\"toc-1-nguyen-tac-chon-mac-inox-theo-muc-do-moi-truong\">Nguy\u00ean t\u1eafc ch\u1ecdn m\u00e1c inox theo m\u1ee9c \u0111\u1ed9 m\u00f4i tr\u01b0\u1eddng<\/h2>\n<p>M\u1ed9t c\u00e1ch th\u1ef1c h\u00e0nh hi\u1ec7u qu\u1ea3 l\u00e0 ph\u00e2n lo\u1ea1i m\u00f4i tr\u01b0\u1eddng v\u00e0 ch\u1ecdn m\u00e1c t\u1ed1i thi\u1ec3u t\u01b0\u01a1ng \u1ee9ng (tham chi\u1ebfu PREN \u2013 ch\u1ec9 s\u1ed1 ch\u1ed1ng r\u1ed7: PREN \u2248 %Cr + 3.3\u00d7%Mo + 16\u00d7%N).<\/p>\n<p>&#8211; V\u00f9ng n\u00f4ng th\u00f4n\/n\u1ed9i \u0111\u1ecba s\u1ea1ch, c\u00e1ch bi\u1ec3n >20 km:<br \/>\n  &#8211; Khuy\u1ebfn ngh\u1ecb: 304\/304L (PREN ~18\u201319). B\u1ec1 m\u1eb7t m\u1ecbn, c\u00f3 k\u1ebf ho\u1ea1ch v\u1ec7 sinh \u0111\u1ecbnh k\u1ef3.<br \/>\n&#8211; \u0110\u00f4 th\u1ecb \u00f4 nhi\u1ec5m (H\u00e0 N\u1ed9i, B\u1eafc Ninh, Th\u00e1i Nguy\u00ean), g\u1ea7n h\u1ed3\/c\u1ea7u v\u01b0\u1ee3t, khu c\u00f4ng nghi\u1ec7p nh\u1eb9:<br \/>\n  &#8211; T\u1ed1i thi\u1ec3u: 304\/304L v\u1edbi ho\u00e0n thi\u1ec7n m\u1ecbn (No.4 tinh ho\u1eb7c BA) v\u00e0 b\u1ea3o tr\u00ec nghi\u00eam ng\u1eb7t.<br \/>\n  &#8211; \u01afu ti\u00ean: 316\/316L (PREN ~23\u201324) cho m\u1eb7t d\u1ef1ng\/lan can y\u00eau c\u1ea7u th\u1ea9m m\u1ef9 b\u1ec1n l\u00e2u, gi\u1ea3m t\u1ea7n su\u1ea5t v\u1ec7 sinh.<br \/>\n&#8211; Ven bi\u1ec3n 0\u20135 km, h\u1ea3i gi\u00f3 mu\u1ed1i, ho\u1eb7c khu c\u00f4ng nghi\u1ec7p h\u00f3a ch\u1ea5t\/xi m\u1ea1:<br \/>\n  &#8211; T\u1ed1i thi\u1ec3u: 316\/316L; b\u1ec1 m\u1eb7t r\u1ea5t m\u1ecbn (BA\/No.4 tinh, th\u1eadm ch\u00ed \u0111\u00e1nh g\u01b0\u01a1ng).<br \/>\n  &#8211; Tr\u01b0\u1eddng h\u1ee3p s\u00e1t bi\u1ec3n, s\u00f3ng b\u1eafn (splash zone), ho\u1eb7c b\u1ea3o tr\u00ec kh\u00f3: Duplex 2205 (PREN ~34\u201335).<br \/>\n&#8211; Kh\u00f4ng khuy\u1ebfn ngh\u1ecb cho ngo\u00e0i tr\u1eddi l\u00e2u d\u00e0i: 201 (PREN ~16\u201317), 430 (PREN ~16\u201318) \u2013 ch\u1ec9 ph\u00f9 h\u1ee3p n\u1ed9i th\u1ea5t\/ngo\u00e0i tr\u1eddi c\u00f3 m\u00e1i che, m\u00f4i tr\u01b0\u1eddng s\u1ea1ch, ch\u1ea5p nh\u1eadn b\u1ea3o tr\u00ec cao.<\/p>\n<h2 id=\"toc-2-so-sanh-nhanh-cac-mac-inox-pho-bien\">So s\u00e1nh nhanh c\u00e1c m\u00e1c inox ph\u1ed5 bi\u1ebfn<\/h2>\n<p>&#8211; 201 (Cr ~16\u201317%, Ni ~3.5\u20135.5%, Mn cao, kh\u00f4ng Mo): c\u01a1 t\u00ednh kh\u00e1, gi\u00e1 th\u1ea5p; k\u00e9m ch\u1ed1ng r\u1ed7\/clorua; d\u1ec5 \u1ed1 tr\u00e0 ngo\u00e0i tr\u1eddi mi\u1ec1n B\u1eafc.<br \/>\n&#8211; 304\/304L (Cr ~18%, Ni ~8\u201310%, kh\u00f4ng Mo): c\u00e2n b\u1eb1ng t\u1ed1t gi\u1eefa gi\u00e1\u2013\u0111\u1ed9 b\u1ec1n; ph\u00f9 h\u1ee3p \u0111a s\u1ed1 c\u00f4ng tr\u00ecnh n\u1ed9i \u0111\u1ecba\/\u0111\u00f4 th\u1ecb n\u1ebfu ho\u00e0n thi\u1ec7n m\u1ecbn v\u00e0 b\u1ea3o tr\u00ec t\u1ed1t; d\u00f9ng 304L khi h\u00e0n nhi\u1ec1u \u0111\u1ec3 tr\u00e1nh nh\u1ea1y c\u1ea3m h\u00f3a.<br \/>\n&#8211; 316\/316L (Cr ~17%, Ni ~10\u201312%, Mo ~2\u20132.5%): kh\u00e1ng clorua v\u01b0\u1ee3t tr\u1ed9i; l\u1ef1a ch\u1ecdn \u01b0u ti\u00ean cho ven bi\u1ec3n\/\u00f4 nhi\u1ec5m; 316L khi h\u00e0n.<br \/>\n&#8211; 430 (ferritic, Cr ~16\u201317%, kh\u00f4ng Ni\/Mo): t\u1eeb t\u00ednh, r\u1ebb; k\u00e9m b\u1ec1n ngo\u00e0i tr\u1eddi, ch\u1ee7 y\u1ebfu d\u00f9ng n\u1ed9i th\u1ea5t\/\u1ed1p trong nh\u00e0.<br \/>\n&#8211; 444\/436L (ferritic cao c\u1ea5p, c\u00f3 Mo): c\u1ea3i thi\u1ec7n kh\u00e1ng r\u1ed7 so v\u1edbi 430; v\u1eabn n\u00ean th\u1eadn tr\u1ecdng \u1edf ven bi\u1ec3n kh\u1eafc nghi\u1ec7t.<br \/>\n&#8211; Duplex 2205 (Cr ~22%, Ni ~5\u20136%, Mo ~3% + N): c\u01a1 t\u00ednh v\u00e0 kh\u00e1ng r\u1ed7 r\u1ea5t cao; d\u00f9ng cho bi\u1ec3n\/splash zone, k\u1ebft c\u1ea5u ch\u1ecbu l\u1ef1c, ng\u00e2n s\u00e1ch cao.<\/p>\n<h2 id=\"toc-3-lua-chon-theo-hang-muc-cong-trinh\">L\u1ef1a ch\u1ecdn theo h\u1ea1ng m\u1ee5c c\u00f4ng tr\u00ecnh<\/h2>\n<h3>Lan can, tay v\u1ecbn, h\u00e0ng r\u00e0o<\/h3>\n<p>&#8211; Khu v\u1ef1c n\u1ed9i \u0111\u00f4 s\u1ea1ch: 304\/304L, \u1ed1ng h\u1ed9p trang tr\u00ed d\u00e0y \u22651.2\u20131.5 mm, m\u1ed1i h\u00e0n \u0111\u01b0\u1ee3c pickling\u2013passivation.<br \/>\n&#8211; \u0110\u00f4 th\u1ecb \u00f4 nhi\u1ec5m\/ven h\u1ed3: \u01b0u ti\u00ean 316\/316L; b\u1ec1 m\u1eb7t No.4 tinh (\u2265320 grit) ho\u1eb7c BA; h\u1ea1n ch\u1ebf x\u01b0\u1edbc th\u00f4 180\u2013240 grit.<br \/>\n&#8211; Ven bi\u1ec3n \u22645 km: 316\/316L; n\u00ean electropolish ho\u1eb7c \u0111\u00e1nh g\u01b0\u01a1ng v\u00f9ng tay n\u1eafm \u0111\u1ec3 gi\u1ea3m b\u00e1m mu\u1ed1i; v\u1ec7 sinh 1\u20132 th\u00e1ng\/l\u1ea7n.<br \/>\n&#8211; Bulong\/\u1ed1c v\u00edt: lu\u00f4n ch\u1ecdn c\u00f9ng ho\u1eb7c cao c\u1ea5p h\u01a1n v\u1eadt li\u1ec7u ch\u00ednh (v\u00ed d\u1ee5 A4-70 cho 316; A2-70 t\u1ed1i thi\u1ec3u cho 304).<\/p>\n<h3>M\u1eb7t d\u1ef1ng, lam che n\u1eafng, bi\u1ec3n qu\u1ea3ng c\u00e1o<\/h3>\n<p>&#8211; 304 cho n\u1ed9i \u0111\u1ecba, 316 cho ven bi\u1ec3n\/\u0111\u01b0\u1eddng l\u1edbn nhi\u1ec1u kh\u00f3i b\u1ee5i.<br \/>\n&#8211; \u01afu ti\u00ean t\u1ea5m c\u00e1n ngu\u1ed9i b\u1ec1 m\u1eb7t BA ho\u1eb7c Hairline m\u1ecbn; c\u00e1c g\u00f3c c\u1ea1nh c\u00f3 b\u00e1n k\u00ednh, tr\u00e1nh g\u1edd s\u1eafc t\u00edch t\u1ee5 b\u1ee5i.<br \/>\n&#8211; Li\u00ean k\u1ebft \u1ea9n tho\u00e1ng kh\u00ed, ch\u1ed1ng k\u1eb9t n\u01b0\u1edbc; c\u00f3 khe tho\u00e1t n\u01b0\u1edbc t\u1ed1i thi\u1ec3u 3\u20135 mm.<\/p>\n<h3>M\u00e1i che, m\u00e1ng tho\u00e1t, \u1ed1p m\u00e1i<\/h3>\n<p>&#8211; 316\/316L cho m\u00e1i h\u1edf m\u01b0a gi\u00f3, \u0111\u1eb7c bi\u1ec7t g\u1ea7n bi\u1ec3n\/kh\u00ed c\u00f4ng nghi\u1ec7p; \u0111\u1ed9 d\u00e0y \u22650.7\u20130.8 mm v\u1edbi t\u00f4n s\u00f3ng.<br \/>\n&#8211; Tr\u00e1nh ti\u1ebfp x\u00fac tr\u1ef1c ti\u1ebfp v\u1edbi \u0111\u1ed3ng\/galvanized \u1edf v\u1ecb tr\u00ed \u1ea9m \u01b0\u1edbt (\u0103n m\u00f2n \u0111i\u1ec7n h\u00f3a); d\u00f9ng l\u1edbp \u0111\u1ec7m nh\u1ef1a.<\/p>\n<h3>B\u1ed3n n\u01b0\u1edbc, b\u1ec3 ch\u1ee9a, \u1ed1ng k\u1ef9 thu\u1eadt ngo\u00e0i tr\u1eddi<\/h3>\n<p>&#8211; B\u1ed3n ch\u1ee9a n\u01b0\u1edbc m\u01b0a\/n\u01b0\u1edbc sinh ho\u1ea1t t\u1ea1i n\u1ed9i \u0111\u1ecba: 304\/304L; ki\u1ec3m so\u00e1t clo trong n\u01b0\u1edbc v\u00e0 v\u1ec7 sinh \u0111\u1ecbnh k\u1ef3.<br \/>\n&#8211; Ven bi\u1ec3n\/kh\u00ed c\u00f4ng nghi\u1ec7p: 316\/316L; ti\u00eau chu\u1ea9n v\u1eadt li\u1ec7u v\u00e0 h\u00e0n theo ASTM A240 (t\u1ea5m), A312 (\u1ed1ng); ki\u1ec3m \u0111\u1ecbnh b\u1ec1 m\u1eb7t m\u1ed1i h\u00e0n sau gia c\u00f4ng.<\/p>\n<h3>M\u00e1ng c\u00e1p, k\u1ebft c\u1ea5u ph\u1ee5 tr\u1ee3<\/h3>\n<p>&#8211; N\u1ed9i \u0111\u1ecba: 304 v\u1edbi d\u00e0y ph\u00f9 h\u1ee3p; khu c\u00f4ng nghi\u1ec7p\/ven bi\u1ec3n: 316; thi\u1ebft k\u1ebf l\u1ed7 tho\u00e1t n\u01b0\u1edbc, th\u00f4ng gi\u00f3 t\u1ed1t \u0111\u1ec3 tr\u00e1nh \u1ea9m \u0111\u1ecdng.<\/p>\n<h2 id=\"toc-4-hoan-thien-be-mat-va-gia-cong-quyet-dinh-tuoi-tho\">Ho\u00e0n thi\u1ec7n b\u1ec1 m\u1eb7t v\u00e0 gia c\u00f4ng quy\u1ebft \u0111\u1ecbnh tu\u1ed5i th\u1ecd<\/h2>\n<p>&#8211; Ch\u1ecdn b\u1ec1 m\u1eb7t m\u1ecbn: c\u00e0ng m\u1ecbn c\u00e0ng \u00edt \u1ed1 tr\u00e0. M\u1ee5c ti\u00eau Ra \u22640.5\u20130.8 \u00b5m. \u01afu ti\u00ean BA\/No.4 tinh (\u2265320 grit) ho\u1eb7c \u0111\u00e1nh b\u00f3ng g\u01b0\u01a1ng cho h\u1ea1ng m\u1ee5c th\u1ea9m m\u1ef9 cao\/ven bi\u1ec3n.<br \/>\n&#8211; X\u1eed l\u00fd sau h\u00e0n: pickling + passivation (d\u1ef1a tr\u00ean axit nitric\/citric theo h\u01b0\u1edbng d\u1eabn nh\u00e0 h\u00f3a ch\u1ea5t); \u201cL\u201d grade (304L\/316L) khi h\u00e0n nhi\u1ec1u.<br \/>\n&#8211; \u0110i\u1ec7n \u0111\u00e1nh b\u00f3ng (electropolishing): khuy\u1ebfn ngh\u1ecb cho lan can\/m\u1eb7t d\u1ef1ng ven bi\u1ec3n \u0111\u1ec3 n\u00e2ng kh\u00e1ng \u0103n m\u00f2n.<br \/>\n&#8211; Tr\u00e1nh nhi\u1ec5m s\u1eaft: d\u1ee5ng c\u1ee5 ri\u00eang cho inox, che ph\u1ee7 khi g\u1ea7n khu v\u1ef1c m\u00e0i\/c\u1eaft th\u00e9p carbon; t\u1ea9y s\u1ea1ch h\u1ea1t m\u00e0i s\u1eaft.<br \/>\n&#8211; V\u1eadt t\u01b0 h\u00e0n: 304 d\u00f9ng ER308L\/E308L; 316 d\u00f9ng ER316L\/E316L; l\u00e0m s\u1ea1ch x\u1ec9, th\u1ee5 \u0111\u1ed9ng h\u00f3a ngay sau h\u00e0n.<br \/>\n&#8211; Keo\/\u0111\u1ec7m: d\u00f9ng silicone trung t\u00ednh, kh\u00f4ng ch\u1ee9a chloride; tr\u00e1nh d\u00f9ng HCl\/HF trong v\u1ec7 sinh c\u00f4ng tr\u01b0\u1eddng.<\/p>\n<h2 id=\"toc-5-thiet-ke-chong-an-mon-thong-minh\">Thi\u1ebft k\u1ebf ch\u1ed1ng \u0103n m\u00f2n th\u00f4ng minh<\/h2>\n<p>&#8211; Tr\u00e1nh khe h\u1edf gi\u1eef \u1ea9m: m\u1ed1i gh\u00e9p c\u00f3 khe <0.5 mm ho\u1eb7c >3 mm; c\u1ea5u t\u1ea1o tho\u00e1t n\u01b0\u1edbc, d\u1ed1c \u22653\u00b0 cho b\u1ec1 m\u1eb7t ngang.<br \/>\n&#8211; Th\u00f4ng gi\u00f3 b\u1ec1 m\u1eb7t \u1ed1p: t\u1ea1o khe h\u1edf th\u00f4ng kh\u00ed ph\u00eda sau t\u1ea5m \u1ed1p \u0111\u1ec3 nhanh kh\u00f4.<br \/>\n&#8211; T\u00e1ch ly kim lo\u1ea1i kh\u00e1c: tr\u00e1nh gh\u00e9p v\u1edbi th\u00e9p carbon\/nh\u00f4m\/\u0111\u1ed3ng \u1edf v\u00f9ng \u1ea9m; n\u1ebfu b\u1eaft bu\u1ed9c, d\u00f9ng \u0111\u1ec7m c\u00e1ch \u0111i\u1ec7n.<br \/>\n&#8211; Tr\u00e1nh n\u01b0\u1edbc t\u00f9 \u0111\u1ecdng: bo tr\u00f2n g\u00f3c, b\u1ecbt k\u00edn \u0111\u1ea7u \u1ed1ng, \u0111\u1ee5c l\u1ed7 tho\u00e1t \u1edf v\u1ecb tr\u00ed th\u1ea5p nh\u1ea5t.<br \/>\n&#8211; D\u1ec5 v\u1ec7 sinh: h\u1ea1n ch\u1ebf b\u1ec1 m\u1eb7t x\u01b0\u1edbc th\u00f4, tr\u00e1nh trang tr\u00ed r\u00e3nh s\u00e2u kh\u00f3 l\u00e0m s\u1ea1ch.<\/p>\n<h2 id=\"toc-6-bao-tri-va-ve-sinh-theo-moi-truong\">B\u1ea3o tr\u00ec v\u00e0 v\u1ec7 sinh theo m\u00f4i tr\u01b0\u1eddng<\/h2>\n<p>&#8211; N\u1ed9i \u0111\u1ecba s\u1ea1ch: lau r\u1eeda m\u1ed7i 3\u20136 th\u00e1ng b\u1eb1ng n\u01b0\u1edbc s\u1ea1ch + x\u00e0 ph\u00f2ng trung t\u00ednh; tr\u00e1ng k\u1ef9, lau kh\u00f4.<br \/>\n&#8211; \u0110\u00f4 th\u1ecb \u00f4 nhi\u1ec5m\/ven h\u1ed3: 1\u20133 th\u00e1ng\/l\u1ea7n; ch\u00fa \u00fd v\u1ecb tr\u00ed m\u01b0a kh\u00f4ng r\u1eeda tr\u00f4i \u0111\u01b0\u1ee3c.<br \/>\n&#8211; Ven bi\u1ec3n \u22645 km: 2\u20134 tu\u1ea7n\/l\u1ea7n; phun r\u1eeda n\u01b0\u1edbc ng\u1ecdt tr\u01b0\u1edbc, sau \u0111\u00f3 v\u1ec7 sinh nh\u1eb9; c\u1ea7n ki\u1ec3m tra \u1ed1c v\u00edt v\u00e0 khe h\u1edf \u0111\u1ecbnh k\u1ef3.<br \/>\n&#8211; Kh\u00f4ng d\u00f9ng: ch\u1ea5t t\u1ea9y ch\u1ee9a chloride (n\u01b0\u1edbc Javen \u0111\u1eadm \u0111\u1eb7c), axit HCl; b\u00e0n ch\u1ea3i th\u00e9p carbon.<br \/>\n&#8211; X\u1eed l\u00fd \u1ed1 tr\u00e0: dung d\u1ecbch t\u1ea9y \u1ed1\/gel passivation g\u1ed1c citric\/nitric chuy\u00ean d\u1ee5ng; sau \u0111\u00f3 tr\u00e1ng n\u01b0\u1edbc ng\u1ecdt v\u00e0 s\u1ea5y kh\u00f4.<\/p>\n<h2 id=\"toc-7-chi-phi-va-bai-toan-vong-doi\">Chi ph\u00ed v\u00e0 b\u00e0i to\u00e1n v\u00f2ng \u0111\u1eddi<\/h2>\n<p>&#8211; T\u01b0\u01a1ng quan chi ph\u00ed v\u1eadt li\u1ec7u (tham kh\u1ea3o th\u1ecb tr\u01b0\u1eddng): 201 \u2248 0.7\u20130.8\u00d7 304; 316 \u2248 1.3\u20131.6\u00d7 304; Duplex 2205 \u2248 2.0\u00d7 304.<br \/>\n&#8211; Tuy nhi\u00ean, chi ph\u00ed v\u00f2ng \u0111\u1eddi (LCC) \u1edf mi\u1ec1n B\u1eafc th\u01b0\u1eddng \u1ee7ng h\u1ed9 316 cho khu v\u1ef1c \u00f4 nhi\u1ec5m\/ven bi\u1ec3n: gi\u1ea3m v\u1ec7 sinh, thay th\u1ebf v\u00e0 khi\u1ebfu n\u1ea1i th\u1ea9m m\u1ef9.<br \/>\n&#8211; Quy t\u1eafc th\u1ef1c t\u1ebf: n\u1ebfu y\u00eau c\u1ea7u th\u1ea9m m\u1ef9 b\u1ec1n >10 n\u0103m, \u0111i\u1ec1u ki\u1ec7n b\u1ea3o tr\u00ec h\u1ea1n ch\u1ebf, ho\u1eb7c g\u1ea7n bi\u1ec3n\/kh\u00ed c\u00f4ng nghi\u1ec7p \u2192 ch\u1ecdn 316 t\u1ed1i thi\u1ec3u.<\/p>\n<h2 id=\"toc-8-quy-trinh-5-buoc-chon-inox-cho-cong-trinh-ngoai-tr\">Quy tr\u00ecnh 5 b\u01b0\u1edbc ch\u1ecdn inox cho c\u00f4ng tr\u00ecnh ngo\u00e0i tr\u1eddi mi\u1ec1n B\u1eafc<\/h2>\n<p>1) \u0110\u1ecbnh m\u1ee9c m\u00f4i tr\u01b0\u1eddng: n\u1ed9i \u0111\u1ecba s\u1ea1ch, \u0111\u00f4 th\u1ecb \u00f4 nhi\u1ec5m, ven bi\u1ec3n 0\u20135 km, c\u00f4ng nghi\u1ec7p h\u00f3a ch\u1ea5t.<br \/>\n2) Ch\u1ecdn m\u00e1c ph\u00f9 h\u1ee3p: 304 cho n\u1ed9i \u0111\u1ecba; 316 cho \u0111\u00f4 th\u1ecb \u00f4 nhi\u1ec5m\/ven bi\u1ec3n; 2205 cho s\u00e1t bi\u1ec3n\/splash zone.<br \/>\n3) Ch\u1ecdn b\u1ec1 m\u1eb7t: BA\/No.4 tinh ho\u1eb7c g\u01b0\u01a1ng; tr\u00e1nh x\u01b0\u1edbc th\u00f4; m\u1ee5c ti\u00eau Ra \u22640.8 \u00b5m.<br \/>\n4) Thi\u1ebft k\u1ebf &#038; gia c\u00f4ng: tho\u00e1t n\u01b0\u1edbc, tr\u00e1nh khe, \u201cL\u201d grade khi h\u00e0n, pickling\u2013passivation, tr\u00e1nh nhi\u1ec5m s\u1eaft, fastener \u0111\u1ed3ng c\u1ea5p ho\u1eb7c cao h\u01a1n.<br \/>\n5) L\u1eadp k\u1ebf ho\u1ea1ch b\u1ea3o tr\u00ec: t\u1ea7n su\u1ea5t v\u1ec7 sinh theo m\u00f4i tr\u01b0\u1eddng; quy tr\u00ecnh kh\u00f4ng chloride.<\/p>\n<h2 id=\"toc-9-vi-du-ap-dung-nhanh\">V\u00ed d\u1ee5 \u00e1p d\u1ee5ng nhanh<\/h2>\n<p>&#8211; Lan can ban c\u00f4ng chung c\u01b0 n\u1ed9i \u0111\u00f4 H\u00e0 N\u1ed9i (t\u1ea7ng cao, \u00edt g\u1ea7n \u0111\u01b0\u1eddng l\u1edbn): 304L, \u1ed1ng h\u1ed9p 1.2\u20131.5 mm, No.4 tinh; v\u1ec7 sinh 3 th\u00e1ng\/l\u1ea7n.<br \/>\n&#8211; M\u1eb7t d\u1ef1ng bi\u1ec3n hi\u1ec7u t\u1ea1i H\u1ea3i Ph\u00f2ng (c\u00e1ch bi\u1ec3n 1\u20132 km): 316L, t\u1ea5m BA\/\u0111\u00e1nh g\u01b0\u01a1ng, li\u00ean k\u1ebft tho\u00e1ng kh\u00ed; v\u1ec7 sinh 2\u20134 tu\u1ea7n\/l\u1ea7n.<br \/>\n&#8211; B\u1ed3n n\u01b0\u1edbc m\u00e1i nh\u00e0 t\u1ea1i Qu\u1ea3ng Ninh: 316L, m\u1ed1i h\u00e0n pickling\u2013passivation, n\u1eafp k\u00edn tr\u00e1nh b\u1ee5i mu\u1ed1i; ki\u1ec3m tra 6 th\u00e1ng\/l\u1ea7n.<\/p>\n<h2 id=\"toc-10-tieu-chuan-va-chung-tu-nen-yeu-cau\">Ti\u00eau chu\u1ea9n v\u00e0 ch\u1ee9ng t\u1eeb n\u00ean y\u00eau c\u1ea7u<\/h2>\n<p>&#8211; V\u1eadt li\u1ec7u: ASTM A240\/A240M (t\u1ea5m\/cu\u1ed9n), ASTM A312\/A778 (\u1ed1ng), ASTM A276 (thanh), JIS G4304\/G4305 (t\u1ea5m), JIS G4303 (thanh).<br \/>\n&#8211; Quy tr\u00ecnh h\u00e0n: d\u00f9ng v\u1eadt li\u1ec7u h\u00e0n \u0111\u1ed3ng c\u1ea5p (ER308L\/ER316L), l\u00e0m s\u1ea1ch \u2013 th\u1ee5 \u0111\u1ed9ng h\u00f3a sau h\u00e0n.<br \/>\n&#8211; Ch\u1ee9ng ch\u1ec9: Mill Test Certificate (EN 10204 3.1), ghi r\u00f5 th\u00e0nh ph\u1ea7n, c\u01a1 t\u00ednh, b\u1ec1 m\u1eb7t; ki\u1ec3m tra PMI v\u1edbi h\u1ea1ng m\u1ee5c quan tr\u1ecdng.<\/p>\n<h2 id=\"toc-11-nguon-tham-khao-ky-thuat\">Ngu\u1ed3n tham kh\u1ea3o k\u1ef9 thu\u1eadt<\/h2>\n<p>&#8211; Nickel Institute \u2013 Stainless Steel in Architecture, Building and Construction; Selection for Coastal Environments: https:\/\/nickelinstitute.org<br \/>\n&#8211; ASSDA (Australian Stainless Steel Development Association) \u2013 Preventing Tea Staining: https:\/\/www.assda.asn.au\/technical\/knowledge-base\/preventing-tea-staining<br \/>\n&#8211; ISSF \u2013 Care and Cleaning of Stainless Steel (PDF): https:\/\/www.worldstainless.org\/Files\/issf\/non-image-files\/PDF\/ISSF_Care_and_Cleaning_Stainless_Steel_EN.pdf<br \/>\n&#8211; Outokumpu Corrosion Handbook (kh\u00e1ng r\u1ed7\/PREN): https:\/\/www.outokumpu.com\/en\/handbook<br \/>\n&#8211; ASTM Standards A240, A312, A276: https:\/\/www.astm.org<\/p>\n<h2 id=\"toc-12-ket-luan\">K\u1ebft lu\u1eadn<\/h2>\n<p>\u0110\u1ec3 c\u00f4ng tr\u00ecnh ngo\u00e0i tr\u1eddi mi\u1ec1n B\u1eafc b\u1ec1n \u0111\u1eb9p v\u00e0 \u00edt b\u1ea3o tr\u00ec: ch\u1ecdn 304 cho n\u1ed9i \u0111\u1ecba s\u1ea1ch; \u01b0u ti\u00ean 316 cho \u0111\u00f4 th\u1ecb \u00f4 nhi\u1ec5m, ven h\u1ed3 v\u00e0 \u0111\u1eb7c bi\u1ec7t ven bi\u1ec3n; c\u00e2n nh\u1eafc duplex 2205 \u1edf s\u00e1t bi\u1ec3n\/splash zone. Lu\u00f4n k\u1ebft h\u1ee3p b\u1ec1 m\u1eb7t m\u1ecbn, thi\u1ebft k\u1ebf ch\u1ed1ng \u0111\u1ecdng n\u01b0\u1edbc\/khe h\u1edf, h\u00e0n v\u1edbi \u201cL\u201d grade v\u00e0 x\u1eed l\u00fd th\u1ee5 \u0111\u1ed9ng h\u00f3a, c\u00f9ng k\u1ebf ho\u1ea1ch v\u1ec7 sinh theo m\u00f4i tr\u01b0\u1eddng. L\u1ef1a ch\u1ecdn \u0111\u00fang ngay t\u1eeb \u0111\u1ea7u s\u1ebd t\u1ed1i \u01b0u chi ph\u00ed v\u00f2ng \u0111\u1eddi v\u00e0 gi\u1ea3m r\u1ee7i ro \u1ed1 tr\u00e0, r\u1ed7 c\u1ee5c b\u1ed9.<\/p>\n<p>C\u1ea7n ch\u00fang t\u00f4i r\u00e0 so\u00e1t b\u1ea3n v\u1ebd, \u0111\u1ec1 xu\u1ea5t m\u00e1c inox \u2013 b\u1ec1 m\u1eb7t \u2013 \u0111\u1ed9 d\u00e0y t\u1ed1i \u01b0u theo ng\u00e2n s\u00e1ch? Li\u00ean h\u1ec7 Inox C\u01b0\u1eddng Th\u1ecbnh \u0111\u1ec3 \u0111\u01b0\u1ee3c t\u01b0 v\u1ea5n chi ti\u1ebft v\u00e0 b\u00e1o gi\u00e1 t\u1ed1t nh\u1ea5t. Hotline: 0343.417.281. Email: inoxcongnghiep.cuongthinh@gmail.com<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Ch\u1ecdn \u0111\u00fang m\u00e1c inox cho ngo\u00e0i tr\u1eddi mi\u1ec1n B\u1eafc: 304 cho n\u1ed9i \u0111\u00f4, 316 g\u1ea7n bi\u1ec3n\/\u00f4 nhi\u1ec5m, tr\u00e1nh 201; ho\u00e0n thi\u1ec7n m\u1ecbn, thi\u1ebft k\u1ebf tho\u00e1t n\u01b0\u1edbc, b\u1ea3o tr\u00ec \u0111\u00fang c\u00e1ch.<\/p>\n","protected":false},"author":7,"featured_media":1002,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[23],"tags":[],"class_list":["post-1596","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\/1596","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=1596"}],"version-history":[{"count":0,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/posts\/1596\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/media\/1002"}],"wp:attachment":[{"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/media?parent=1596"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/categories?post=1596"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/tags?post=1596"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}