{"id":1266,"date":"2025-11-04T12:34:16","date_gmt":"2025-11-04T05:34:16","guid":{"rendered":"https:\/\/inoxcuongthinh.com\/ban-ghe-inox-ngoai-troi-chon-mac-va-hoan-thien-chong-an-mon\/"},"modified":"2025-11-04T12:34:16","modified_gmt":"2025-11-04T05:34:16","slug":"ban-ghe-inox-ngoai-troi-chon-mac-va-hoan-thien-chong-an-mon","status":"publish","type":"post","link":"https:\/\/inoxcuongthinh.com\/ban-ghe-inox-ngoai-troi-chon-mac-va-hoan-thien-chong-an-mon\/","title":{"rendered":"B\u00e0n gh\u1ebf inox ngo\u00e0i tr\u1eddi: ch\u1ecdn m\u00e1c v\u00e0 ho\u00e0n thi\u1ec7n ch\u1ed1ng \u0103n m\u00f2n"},"content":{"rendered":"<div class=\"custom-toc\">\n<h3>N\u1ed9i dung ch\u00ednh<\/h3>\n<ul>\n<li><a href=\"#toc-0-khi-hau-viet-nam-va-co-che-hu-hai-ngoai-troi\">Kh\u00ed h\u1eadu Vi\u1ec7t Nam v\u00e0 c\u01a1 ch\u1ebf h\u01b0 h\u1ea1i ngo\u00e0i tr\u1eddi<\/a><\/li>\n<li><a href=\"#toc-1-chon-mac-inox-theo-moi-truong-su-dung\">Ch\u1ecdn m\u00e1c inox theo m\u00f4i tr\u01b0\u1eddng s\u1eed d\u1ee5ng<\/a><\/li>\n<li><a href=\"#toc-2-do-day-tiet-dien-va-ket-cau-chiu-luc\">\u0110\u1ed9 d\u00e0y, ti\u1ebft di\u1ec7n v\u00e0 k\u1ebft c\u1ea5u ch\u1ecbu l\u1ef1c<\/a><\/li>\n<li><a href=\"#toc-3-hoan-thien-be-mat-min-hon-ben-hon\">Ho\u00e0n thi\u1ec7n b\u1ec1 m\u1eb7t: m\u1ecbn h\u01a1n = b\u1ec1n h\u01a1n<\/a><\/li>\n<li><a href=\"#toc-4-lien-ket-phu-kien-va-an-mon-dien-hoa\">Li\u00ean k\u1ebft, ph\u1ee5 ki\u1ec7n v\u00e0 \u0103n m\u00f2n \u0111i\u1ec7n h\u00f3a<\/a><\/li>\n<li><a href=\"#toc-5-thiet-ke-de-thoat-nuoc-va-han-che-khe-ban\">Thi\u1ebft k\u1ebf \u0111\u1ec3 tho\u00e1t n\u01b0\u1edbc v\u00e0 h\u1ea1n ch\u1ebf khe b\u1ea9n<\/a><\/li>\n<li><a href=\"#toc-6-bao-tri-theo-moi-truong\">B\u1ea3o tr\u00ec theo m\u00f4i tr\u01b0\u1eddng<\/a><\/li>\n<li><a href=\"#toc-7-chi-phi-vong-doi-vi-sao-316-thuong-re-hon-ve-lau-d\">Chi ph\u00ed v\u00f2ng \u0111\u1eddi: v\u00ec sao 316 th\u01b0\u1eddng \u201cr\u1ebb\u201d h\u01a1n v\u1ec1 l\u00e2u d\u00e0i<\/a><\/li>\n<li><a href=\"#toc-8-tieu-chuan-vat-lieu-va-kiem-tra-nen-ap-dung\">Ti\u00eau chu\u1ea9n v\u1eadt li\u1ec7u v\u00e0 ki\u1ec3m tra n\u00ean \u00e1p d\u1ee5ng<\/a><\/li>\n<li><a href=\"#toc-9-bo-thong-so-mau-theo-kich-ban-moi-truong\">B\u1ed9 th\u00f4ng s\u1ed1 m\u1eabu theo k\u1ecbch b\u1ea3n m\u00f4i tr\u01b0\u1eddng<\/a><\/li>\n<li><a href=\"#toc-10-loi-pho-bien-can-tranh\">L\u1ed7i ph\u1ed5 bi\u1ebfn c\u1ea7n tr\u00e1nh<\/a><\/li>\n<li><a href=\"#toc-11-nguon-cung-va-kiem-soat-chat-luong-tai-ha-noi\">Ngu\u1ed3n cung v\u00e0 ki\u1ec3m so\u00e1t ch\u1ea5t l\u01b0\u1ee3ng t\u1ea1i H\u00e0 N\u1ed9i<\/a><\/li>\n<li><a href=\"#toc-12-ket-luan\">K\u1ebft lu\u1eadn<\/a><\/li>\n<\/ul>\n<\/div>\n<p>B\u00e0n gh\u1ebf inox ngo\u00e0i tr\u1eddi \u0111\u00f2i h\u1ecfi v\u1eadt li\u1ec7u ch\u1ecbu \u0103n m\u00f2n v\u00e0 b\u1ec1n c\u01a1 h\u1ecdc tr\u01b0\u1edbc n\u1eafng, m\u01b0a, mu\u1ed1i bi\u1ec3n v\u00e0 \u00f4 nhi\u1ec5m \u2013 m\u1ed9t th\u00e1ch th\u1ee9c quen thu\u1ed9c trong x\u00e2y d\u1ef1ng d\u00e2n d\u1ee5ng v\u00e0 h\u1ea1 t\u1ea7ng ti\u1ec7n \u00edch. B\u00e0i vi\u1ebft n\u00e0y cung c\u1ea5p h\u01b0\u1edbng d\u1eabn ch\u1ecdn m\u00e1c inox, b\u1ec1 m\u1eb7t, \u0111\u1ed9 d\u00e0y, k\u1ebft c\u1ea5u v\u00e0 b\u1ea3o tr\u00ec \u0111\u1ec3 b\u1ed9 b\u00e0n gh\u1ebf ngo\u00e0i tr\u1eddi \u0111\u1ea1t tu\u1ed5i th\u1ecd cao, h\u1ea1n ch\u1ebf \u1ed1 v\u00e0ng, g\u1ec9 \u201ctr\u00e0\u201d v\u00e0 h\u01b0 h\u1ecfng li\u00ean k\u1ebft.<\/p>\n<h2 id=\"toc-0-khi-hau-viet-nam-va-co-che-hu-hai-ngoai-troi\">Kh\u00ed h\u1eadu Vi\u1ec7t Nam v\u00e0 c\u01a1 ch\u1ebf h\u01b0 h\u1ea1i ngo\u00e0i tr\u1eddi<\/h2>\n<p>&#8211; Mu\u1ed1i chloride (v\u00f9ng ven bi\u1ec3n): T\u0103ng nguy c\u01a1 r\u1ed7 (pitting) v\u00e0 \u0103n m\u00f2n khe (crevice) tr\u00ean inox; h\u01a1i s\u01b0\u01a1ng m\u1eb7n c\u00f3 th\u1ec3 lan s\u00e2u v\u00e0i km v\u00e0o \u0111\u1ea5t li\u1ec1n.<br \/>\n&#8211; \u00d4 nhi\u1ec5m c\u00f4ng nghi\u1ec7p\/\u0111\u00f4 th\u1ecb: SO2\/NOx t\u1ea1o m\u01b0a axit, mu\u1ed9i kim lo\u1ea1i b\u00e1m b\u1ec1 m\u1eb7t l\u00e0m gi\u1ea3m hi\u1ec7u qu\u1ea3 m\u00e0ng th\u1ee5 \u0111\u1ed9ng.<br \/>\n&#8211; Nhi\u1ec7t v\u00e0 UV: Gi\u00e3n n\u1edf nhi\u1ec7t g\u00e2y n\u1ee9t s\u01a1n\/l\u1edbp ph\u1ee7, t\u1ea1o khe b\u1ea9n; nhi\u1ec7t \u0111\u1ed9 b\u1ec1 m\u1eb7t cao l\u00e0m t\u0103ng t\u1ed1c \u0111\u1ed9 \u0103n m\u00f2n c\u1ee5c b\u1ed9.<br \/>\n&#8211; \u0110\u1ecdng n\u01b0\u1edbc\/b\u1ee5i: N\u01b0\u1edbc t\u00f9 d\u01b0\u1edbi gh\u1ebf, trong \u1ed1ng, ho\u1eb7c k\u1ebd gh\u00e9p \u0111\u1ea9y nhanh \u0103n m\u00f2n khe v\u00e0 t\u1ea1o v\u1ebft \u1ed1.<\/p>\n<h3>V\u00ec sao inox v\u1eabn b\u1ecb \u201cg\u1ec9 tr\u00e0\u201d?<\/h3>\n<p>M\u00e0ng th\u1ee5 \u0111\u1ed9ng Cr2O3 b\u1ea3o v\u1ec7 inox c\u00f3 th\u1ec3 suy y\u1ebfu do chloride, v\u1ebft h\u00e0n ch\u01b0a x\u1eed l\u00fd, nhi\u1ec5m b\u1ea9n s\u1eaft cacbon. H\u1eadu qu\u1ea3 l\u00e0 \u1ed1 n\u00e2u b\u1ec1 m\u1eb7t (tea staining), kh\u00f4ng ph\u1ea3i g\u1ec9 xuy\u00ean th\u1ee7ng ngay nh\u01b0ng l\u00e0m x\u1ea5u th\u1ea9m m\u1ef9 v\u00e0 n\u1ebfu b\u1ecf m\u1eb7c s\u1ebd ti\u1ebfn tri\u1ec3n.<\/p>\n<h2 id=\"toc-1-chon-mac-inox-theo-moi-truong-su-dung\">Ch\u1ecdn m\u00e1c inox theo m\u00f4i tr\u01b0\u1eddng s\u1eed d\u1ee5ng<\/h2>\n<p>&#8211; Inox 201 (Cr\u224816\u201317%, Mn cao, Ni th\u1ea5p): Ch\u1ecbu \u0103n m\u00f2n k\u00e9m trong m\u00f4i tr\u01b0\u1eddng chloride; ch\u1ec9 n\u00ean c\u00e2n nh\u1eafc cho n\u1ed9i th\u1ea5t ho\u1eb7c ngo\u1ea1i th\u1ea5t kh\u00f4, c\u00e1ch xa bi\u1ec3n >20 km, c\u00f3 m\u00e1i che v\u00e0 b\u1ea3o tr\u00ec t\u1ed1t.<br \/>\n&#8211; Inox 304\/SUS304 (A2): C\u00e2n b\u1eb1ng gi\u1eefa chi ph\u00ed v\u00e0 \u0111\u1ed9 b\u1ec1n; ph\u00f9 h\u1ee3p \u0111\u00f4 th\u1ecb\/mi\u1ec1n n\u00fai, c\u00e1ch b\u1edd bi\u1ec3n \u22655\u201310 km, b\u1ea3o tr\u00ec \u0111\u1ecbnh k\u1ef3. PREN ~18.<br \/>\n&#8211; Inox 316\/316L (A4): C\u00f3 Mo ~2\u20132.5% t\u0103ng ch\u1ed1ng r\u1ed7 v\u00e0 khe; khuy\u1ebfn ngh\u1ecb cho ven bi\u1ec3n 0\u20135 km, h\u1ed3 b\u01a1i n\u01b0\u1edbc m\u1eb7n, khu c\u00f4ng nghi\u1ec7p h\u00f3a ch\u1ea5t nh\u1eb9. PREN ~23. 316L gi\u1ea3m nguy c\u01a1 nh\u1ea1y c\u1ea3m do h\u00e0n.<br \/>\n&#8211; Inox 430 (ferritic): K\u00e9m ch\u1ed1ng \u0103n m\u00f2n ngo\u00e0i tr\u1eddi, kh\u00f4ng khuy\u1ebfn ngh\u1ecb cho b\u00e0n gh\u1ebf.<br \/>\n&#8211; Duplex 2205: L\u1ef1a ch\u1ecdn cao c\u1ea5p cho khu s\u00e1t bi\u1ec3n, phun s\u00f3ng m\u1eb7n\/s\u01b0\u01a1ng m\u1eb7n d\u00e0y \u0111\u1eb7c; chi ph\u00ed cao, hi\u1ebfm khi c\u1ea7n cho n\u1ed9i th\u1ea5t \u0111\u00f4 th\u1ecb nh\u01b0ng h\u1eefu \u00edch \u1edf resort m\u1eb7t bi\u1ec3n, c\u1ea7u c\u1ea3ng.<\/p>\n<p>G\u1ee3i \u00fd nhanh theo v\u1ecb tr\u00ed:<br \/>\n&#8211; \u0110\u00f4 th\u1ecb n\u1ed9i \u0111\u1ecba, \u00edt \u00f4 nhi\u1ec5m, c\u00f3 m\u00e1i che: 304.<br \/>\n&#8211; \u0110\u00f4 th\u1ecb ven bi\u1ec3n 1\u20135 km, ngo\u00e0i tr\u1eddi h\u1edf: 316\/316L.<br \/>\n&#8211; S\u00e1t m\u00e9p bi\u1ec3n, s\u01b0\u01a1ng m\u1eb7n \u0111\u1eadm \u0111\u1eb7c, c\u00f4ng tr\u00ecnh c\u00f4ng c\u1ed9ng \u00edt b\u1ea3o tr\u00ec: 316L ho\u1eb7c Duplex 2205.<br \/>\n&#8211; H\u1ed3 b\u01a1i\/SPA (c\u00f3 chloride): 316L b\u1eaft bu\u1ed9c; tr\u00e1nh khe b\u1ea9n, t\u0103ng t\u1ea7n su\u1ea5t r\u1eeda.<\/p>\n<h2 id=\"toc-2-do-day-tiet-dien-va-ket-cau-chiu-luc\">\u0110\u1ed9 d\u00e0y, ti\u1ebft di\u1ec7n v\u00e0 k\u1ebft c\u1ea5u ch\u1ecbu l\u1ef1c<\/h2>\n<p>&#8211; \u1ed0ng khung gh\u1ebf: \u1ed0ng c\u01a1 kh\u00ed inox (ASTM A554) \u00d825\u201332 mm, \u0111\u1ed9 d\u00e0y 1.2\u20131.5 mm cho gh\u1ebf \u0111\u01a1n; 1.5\u20132.0 mm cho gh\u1ebf b\u0103ng d\u00e0i.<br \/>\n&#8211; Khung b\u00e0n: \u1ed0ng h\u1ed9p 30\u00d730\/40\u00d720 mm, \u0111\u1ed9 d\u00e0y 1.5\u20132.0 mm; m\u1eb7t b\u00e0n \u0111\u00e1\/g\u1ed7 n\u1eb7ng n\u00ean gia c\u01b0\u1eddng gi\u1eb1ng ch\u00e9o ho\u1eb7c b\u1ea3n m\u00e3 d\u00e0y 3\u20135 mm.<br \/>\n&#8211; T\u1ea3i tr\u1ecdng m\u1ee5c ti\u00eau: Gh\u1ebf ch\u1ecbu t\u1ea3i t\u0129nh t\u1ed1i thi\u1ec3u 1300 N t\u1ea1i m\u1eb7t ng\u1ed3i; b\u00e0n ch\u1ecbu 2000\u20132500 N ph\u00e2n b\u1ed1 \u0111\u1ec1u v\u1edbi \u0111\u1ed9 v\u00f5ng ch\u1ea5p nh\u1eadn \u0111\u01b0\u1ee3c.<br \/>\n&#8211; Kho\u1ea3ng h\u00e0n: H\u00e0n TIG\/MIG, \u0111\u1ea3m b\u1ea3o th\u1ea5u t\u1ed1t, \u01b0u ti\u00ean h\u00e0n k\u00edn m\u1ea1ch (\u0111\u1ec3 ch\u1ed1ng n\u01b0\u1edbc v\u00e0o \u1ed1ng).<br \/>\n&#8211; Gi\u00e3n n\u1edf nhi\u1ec7t: H\u1ec7 s\u1ed1 ~16\u201317 \u00b5m\/m\u00b7K. V\u1edbi b\u00e0n d\u00e0i >1.8 m n\u00ean d\u00f9ng l\u1ed7 oval\/slotted cho bul\u00f4ng \u0111\u1ec3 tr\u00e1nh \u1ee9ng su\u1ea5t do nhi\u1ec7t.<\/p>\n<h2 id=\"toc-3-hoan-thien-be-mat-min-hon-ben-hon\">Ho\u00e0n thi\u1ec7n b\u1ec1 m\u1eb7t: m\u1ecbn h\u01a1n = b\u1ec1n h\u01a1n<\/h2>\n<p>&#8211; \u0110\u1ed9 nh\u00e1m: B\u1ec1 m\u1eb7t c\u00e0ng m\u1ecbn c\u00e0ng ch\u1ed1ng b\u00e1m mu\u1ed1i\/b\u1ee5i; RA th\u1ea5p gi\u1ea3m nguy c\u01a1 tea staining.<br \/>\n&#8211; C\u00e1c ho\u00e0n thi\u1ec7n ph\u1ed5 bi\u1ebfn:<br \/>\n  &#8211; 2B: Nh\u1eb5n m\u1edd c\u01a1 b\u1ea3n; d\u00f9ng n\u1ed9i th\u1ea5t\/chi ti\u1ebft khu\u1ea5t.<br \/>\n  &#8211; No.4\/HL (hairline): V\u00e2n ch\u1ea3i \u0111\u1eb9p, d\u1ec5 b\u1ea3o tr\u00ec; \u0111\u00e1nh x\u01b0\u1edbc c\u00f9ng chi\u1ec1u v\u00e2n khi l\u00e0m s\u1ea1ch.<br \/>\n  &#8211; G\u01b0\u01a1ng 8K\/BA: R\u1ea5t m\u1ecbn, ch\u1ed1ng b\u00e1m t\u1ed1t nh\u01b0ng l\u1ed9 x\u01b0\u1edbc; ph\u00f9 h\u1ee3p kh\u00f4ng gian sang tr\u1ecdng.<br \/>\n  &#8211; Bead-blast: Th\u1ea9m m\u1ef9 m\u1ecbn \u0111\u1ec1u nh\u01b0ng t\u0103ng di\u1ec7n t\u00edch b\u1ec1 m\u1eb7t, c\u1ea7n b\u1ea3o tr\u00ec k\u1ef9 \u1edf v\u00f9ng bi\u1ec3n.<br \/>\n  &#8211; \u0110i\u1ec7n \u0111\u00e1nh b\u00f3ng (electropolish): T\u1ed1i \u01b0u ch\u1ed1ng b\u00e1m v\u00e0 \u0103n m\u00f2n khe vi m\u00f4; t\u1ed1t cho bi\u1ec3n\/h\u1ed3 b\u01a1i.<br \/>\n&#8211; Th\u1ee5 \u0111\u1ed9ng h\u00f3a sau gia c\u00f4ng: T\u1ea9y m\u1ed1i h\u00e0n (pickling) \u0111\u1ec3 lo\u1ea1i b\u1ecf m\u00e0u nhi\u1ec7t v\u00e0 oxit, sau \u0111\u00f3 passivation (axit nitric\/citric) ph\u1ee5c h\u1ed3i m\u00e0ng th\u1ee5 \u0111\u1ed9ng. B\u01b0\u1edbc n\u00e0y quy\u1ebft \u0111\u1ecbnh tu\u1ed5i th\u1ecd ngo\u00e0i tr\u1eddi.<br \/>\n&#8211; L\u1edbp ph\u1ee7 trang tr\u00ed: PVD m\u00e0u t\u0103ng th\u1ea9m m\u1ef9\/\u0111\u1ed9 c\u1ee9ng b\u1ec1 m\u1eb7t nh\u01b0ng kh\u00f4ng thay th\u1ebf ch\u1ecdn m\u00e1c \u0111\u00fang; n\u1ebfu l\u1edbp ph\u1ee7 tr\u1ea7y x\u01b0\u1edbc c\u1ea7n x\u1eed l\u00fd s\u1edbm \u0111\u1ec3 tr\u00e1nh \u0103n m\u00f2n khe d\u01b0\u1edbi l\u1edbp ph\u1ee7.<\/p>\n<h2 id=\"toc-4-lien-ket-phu-kien-va-an-mon-dien-hoa\">Li\u00ean k\u1ebft, ph\u1ee5 ki\u1ec7n v\u00e0 \u0103n m\u00f2n \u0111i\u1ec7n h\u00f3a<\/h2>\n<p>&#8211; Bul\u00f4ng\/\u1ed1c\/v\u00edt: D\u00f9ng theo ISO 3506 \u2014 A2-70 cho 304, A4-70 cho 316; tr\u00e1nh v\u00edt th\u00e9p cacbon m\u1ea1 k\u1ebdm l\u1eafp tr\u00ean inox (g\u00e2y \u0103n m\u00f2n \u0111i\u1ec7n h\u00f3a v\u00e0 \u1ed1).<br \/>\n&#8211; Long \u0111en\/\u0111\u1ec7m c\u00e1ch \u0111i\u1ec7n: Nylon\/PTFE\/EPDM gi\u1eefa inox v\u00e0 kim lo\u1ea1i kh\u00e1c (nh\u00f4m, th\u00e9p) \u0111\u1ec3 ng\u0103n pin \u0111i\u1ec7n h\u00f3a.<br \/>\n&#8211; Ch\u00e2n \u0111\u1ebf\/\u0111\u1ec7m s\u00e0n: D\u00f9ng ch\u00e2n nh\u1ef1a\/PU c\u00f3 l\u1ed7 tho\u00e1t; tr\u00e1nh t\u00edch t\u1ee5 n\u01b0\u1edbc d\u01b0\u1edbi ch\u00e2n.<br \/>\n&#8211; Keo tr\u00e1m: Silicone trung t\u00ednh; tr\u00e1nh silicone c\u00f3 chloride.<br \/>\n&#8211; V\u1eadt li\u1ec7u k\u1ebft h\u1ee3p: N\u1ebfu g\u1eafn v\u1edbi g\u1ed7\/\u0111\u00e1, \u0111\u1ea3m b\u1ea3o tho\u00e1t n\u01b0\u1edbc \u1edf b\u1ec1 m\u1eb7t ti\u1ebfp x\u00fac v\u00e0 d\u00f9ng keo\/\u0111\u1ec7m ch\u1ed1ng \u1ea9m.<\/p>\n<h2 id=\"toc-5-thiet-ke-de-thoat-nuoc-va-han-che-khe-ban\">Thi\u1ebft k\u1ebf \u0111\u1ec3 tho\u00e1t n\u01b0\u1edbc v\u00e0 h\u1ea1n ch\u1ebf khe b\u1ea9n<\/h2>\n<p>&#8211; Tr\u00e1nh \u201cb\u1eaby n\u01b0\u1edbc\u201d: H\u00e0n k\u00edn \u0111\u1ea7u \u1ed1ng, b\u1ed1 tr\u00ed l\u1ed7 tho\u00e1t \u1edf m\u1eb7t d\u01b0\u1edbi, nghi\u00eang m\u1eb7t ph\u1eb3ng 1\u20132\u00b0.<br \/>\n&#8211; Gi\u1ea3m khe gh\u00e9p <0.5 mm ho\u1eb7c >2 mm \u0111\u1ec3 d\u1ec5 l\u00e0m s\u1ea1ch; b\u1ecbt n\u1eafp \u0111\u1ea7u \u1ed1ng b\u1eb1ng n\u1eafp inox ho\u1eb7c nh\u1ef1a UV.<br \/>\n&#8211; B\u1ec1 m\u1eb7t ch\u1ea3i v\u00e2n: \u0110\u1eb7t v\u00e2n theo chi\u1ec1u \u00edt \u0111\u1ecdng b\u1ea9n; bo tr\u00f2n c\u1ea1nh R\u22651 mm gi\u1ea3m s\u1eafc c\u1ea1nh v\u00e0 b\u00e1m b\u1ea9n.<br \/>\n&#8211; Th\u00f4ng h\u01a1i khi h\u00e0n: T\u1ea1o l\u1ed7 th\u00f4ng nh\u1ecf tr\u00e1nh n\u1ed5 do gi\u00e3n n\u1edf kh\u00ed, sau \u0111\u00f3 b\u1ecbt k\u00edn.<\/p>\n<h2 id=\"toc-6-bao-tri-theo-moi-truong\">B\u1ea3o tr\u00ec theo m\u00f4i tr\u01b0\u1eddng<\/h2>\n<p>&#8211; T\u1ea7n su\u1ea5t v\u1ec7 sinh khuy\u1ebfn ngh\u1ecb:<br \/>\n  &#8211; N\u1ed9i \u0111\u1ecba, \u00edt \u00f4 nhi\u1ec5m: 2\u20133 th\u00e1ng\/l\u1ea7n.<br \/>\n  &#8211; \u0110\u00f4 th\u1ecb ven bi\u1ec3n 1\u20135 km: 2\u20134 tu\u1ea7n\/l\u1ea7n.<br \/>\n  &#8211; S\u00e1t bi\u1ec3n\/phun s\u00f3ng, h\u1ed3 b\u01a1i: H\u00e0ng tu\u1ea7n, x\u1ea3 n\u01b0\u1edbc ng\u1ecdt sau m\u1ed7i ng\u00e0y.<br \/>\n&#8211; Quy tr\u00ecnh:<br \/>\n  &#8211; R\u1eeda n\u01b0\u1edbc ng\u1ecdt, d\u00f9ng x\u00e0 ph\u00f2ng pH trung t\u00ednh, kh\u0103n m\u1ec1m\/mi\u1ebfng ch\u00e0 s\u1ee3i nylon, ch\u00e0 theo chi\u1ec1u v\u00e2n.<br \/>\n  &#8211; Tr\u00e1nh tuy\u1ec7t \u0111\u1ed1i: Javel\/Clorua, HCl, t\u1ea9y r\u1eeda ch\u1ee9a chloride, len th\u00e9p.<br \/>\n  &#8211; Lo\u1ea1i b\u1ecf tea staining: D\u00f9ng dung d\u1ecbch t\u1ea9y chuy\u00ean d\u1ee5ng cho inox, sau \u0111\u00f3 r\u1eeda k\u1ef9 v\u00e0 passivation gel n\u1ebfu c\u00f3.<br \/>\n  &#8211; B\u1ea3o v\u1ec7: C\u00f3 th\u1ec3 ph\u1ee7 sealant nano cho inox \u1edf v\u00f9ng bi\u1ec3n \u0111\u1ec3 gi\u1ea3m b\u00e1m mu\u1ed1i (b\u1ea3o tr\u00ec \u0111\u1ecbnh k\u1ef3).<\/p>\n<h2 id=\"toc-7-chi-phi-vong-doi-vi-sao-316-thuong-re-hon-ve-lau-d\">Chi ph\u00ed v\u00f2ng \u0111\u1eddi: v\u00ec sao 316 th\u01b0\u1eddng \u201cr\u1ebb\u201d h\u01a1n v\u1ec1 l\u00e2u d\u00e0i<\/h2>\n<p>&#8211; Chi ph\u00ed \u0111\u1ea7u t\u01b0: 316\/316L cao h\u01a1n 304 kho\u1ea3ng 20\u201340% v\u00e0 cao h\u01a1n 201 \u0111\u00e1ng k\u1ec3.<br \/>\n&#8211; Chi ph\u00ed v\u1eadn h\u00e0nh: 316 gi\u1ea3m t\u1ea7n su\u1ea5t v\u1ec7 sinh, h\u1ea1n ch\u1ebf thay th\u1ebf s\u1edbm do \u1ed1\/r\u1ed7.<br \/>\n&#8211; V\u00ed d\u1ee5 kh\u00e1i ni\u1ec7m: N\u1ebfu 304 \u1edf ven bi\u1ec3n c\u1ea7n thay\/\u0111\u00e1nh b\u00f3ng l\u1edbn sau 2\u20133 n\u0103m, c\u00f2n 316 duy tr\u00ec ngo\u1ea1i quan 5\u20137 n\u0103m v\u1edbi b\u1ea3o tr\u00ec ti\u00eau chu\u1ea9n, t\u1ed5ng chi ph\u00ed v\u00f2ng \u0111\u1eddi 316 th\u01b0\u1eddng th\u1ea5p h\u01a1n cho c\u00e1c d\u1ef1 \u00e1n kh\u00e1ch s\u1ea1n\/khu c\u00f4ng c\u1ed9ng.<\/p>\n<h2 id=\"toc-8-tieu-chuan-vat-lieu-va-kiem-tra-nen-ap-dung\">Ti\u00eau chu\u1ea9n v\u1eadt li\u1ec7u v\u00e0 ki\u1ec3m tra n\u00ean \u00e1p d\u1ee5ng<\/h2>\n<p>&#8211; T\u1ea5m\/cu\u1ed9n: ASTM A240 (304\/316\/316L); \u0111\u1ed9 d\u00e0y theo ASTM A480.<br \/>\n&#8211; \u1ed0ng c\u01a1 kh\u00ed: ASTM A554 (\u0111\u1ed9 th\u1eb3ng, ho\u00e0n thi\u1ec7n, c\u01a1 t\u00ednh); \u1ed1ng h\u00e0n trang tr\u00ed d\u00f9ng nhi\u1ec1u cho b\u00e0n gh\u1ebf.<br \/>\n&#8211; \u1ed0ng d\u1eabn\/\u1ed1ng \u00e1p l\u1ef1c (n\u1ebfu d\u00f9ng): ASTM A312.<br \/>\n&#8211; Que d\u00e2y h\u00e0n: ER308L cho 304, ER316L cho 316; ki\u1ec3m so\u00e1t nhi\u1ec7t \u0111\u1ec3 gi\u1ea3m m\u00e0u nhi\u1ec7t.<br \/>\n&#8211; Bul\u00f4ng: ISO 3506 (A2\/A4, c\u1ea5p b\u1ec1n 70\/80).<br \/>\n&#8211; Ki\u1ec3m tra b\u1ec1 m\u1eb7t: RA\/\u0111\u1ed9 b\u00f3ng, ki\u1ec3m th\u1ea9m th\u1ea5u m\u1ed1i h\u00e0n (PT) v\u1edbi k\u1ebft c\u1ea5u ch\u1ecbu l\u1ef1c.<br \/>\n&#8211; Ki\u1ec3m ch\u1ee9ng ch\u1ecbu m\u1eb7n\/l\u1edbp ph\u1ee7: Phun s\u01b0\u01a1ng mu\u1ed1i ASTM B117 ph\u1ee5c v\u1ee5 so s\u00e1nh t\u01b0\u01a1ng \u0111\u1ed1i gi\u1eefa c\u00e1c ho\u00e0n thi\u1ec7n\/coating (kh\u00f4ng thay th\u1ebf th\u1eed nghi\u1ec7m th\u1ef1c \u0111\u1ecba).<\/p>\n<h2 id=\"toc-9-bo-thong-so-mau-theo-kich-ban-moi-truong\">B\u1ed9 th\u00f4ng s\u1ed1 m\u1eabu theo k\u1ecbch b\u1ea3n m\u00f4i tr\u01b0\u1eddng<\/h2>\n<p>&#8211; \u0110\u00f4 th\u1ecb n\u1ed9i \u0111\u1ecba (c\u00f3 m\u01b0a axit nh\u1eb9, \u00edt mu\u1ed1i):<br \/>\n  &#8211; M\u00e1c: 304 (khung\/m\u1eb7t kim lo\u1ea1i).<br \/>\n  &#8211; \u0110\u1ed9 d\u00e0y: Gh\u1ebf 1.2\u20131.5 mm; b\u00e0n 1.5\u20132.0 mm.<br \/>\n  &#8211; Ho\u00e0n thi\u1ec7n: No.4\/HL; passivation sau h\u00e0n.<br \/>\n  &#8211; Bul\u00f4ng: A2-70; \u0111\u1ec7m nylon.<br \/>\n  &#8211; B\u1ea3o tr\u00ec: 2\u20133 th\u00e1ng\/l\u1ea7n.<br \/>\n&#8211; Ven bi\u1ec3n 1\u20135 km:<br \/>\n  &#8211; M\u00e1c: 316L to\u00e0n b\u1ed9 khung nh\u00ecn th\u1ea5y; ph\u1ee5 ki\u1ec7n A4-70.<br \/>\n  &#8211; Ho\u00e0n thi\u1ec7n: HL ho\u1eb7c \u0111i\u1ec7n \u0111\u00e1nh b\u00f3ng chi ti\u1ebft h\u1edf mu\u1ed1i; b\u1ecbt k\u00edn m\u1ed1i h\u00e0n.<br \/>\n  &#8211; B\u1ea3o tr\u00ec: 2\u20134 tu\u1ea7n\/l\u1ea7n, r\u1eeda n\u01b0\u1edbc ng\u1ecdt \u0111\u1ecbnh k\u1ef3.<br \/>\n&#8211; S\u00e1t bi\u1ec3n\/phun s\u00f3ng, h\u1ed3 b\u01a1i n\u01b0\u1edbc m\u1eb7n:<br \/>\n  &#8211; M\u00e1c: 316L ho\u1eb7c Duplex 2205 cho b\u1ed9 ph\u1eadn th\u01b0\u1eddng xuy\u00ean \u01b0\u1edbt m\u1eb7n.<br \/>\n  &#8211; Ho\u00e0n thi\u1ec7n: \u0110i\u1ec7n \u0111\u00e1nh b\u00f3ng; t\u1ed1i thi\u1ec3u mirror c\u1ee5c b\u1ed9 \u1edf v\u00f9ng h\u1ee9ng mu\u1ed1i.<br \/>\n  &#8211; Li\u00ean k\u1ebft: T\u1ed1i \u0111a h\u00f3a chi ti\u1ebft h\u00e0n k\u00edn; h\u1ea1n ch\u1ebf bul\u00f4ng l\u1ed9 thi\u00ean.<br \/>\n  &#8211; B\u1ea3o tr\u00ec: H\u00e0ng tu\u1ea7n, x\u1ea3 n\u01b0\u1edbc ng\u1ecdt m\u1ed7i ng\u00e0y n\u1ebfu c\u00f3 phun s\u00f3ng.<\/p>\n<h2 id=\"toc-10-loi-pho-bien-can-tranh\">L\u1ed7i ph\u1ed5 bi\u1ebfn c\u1ea7n tr\u00e1nh<\/h2>\n<p>&#8211; D\u00f9ng 201 cho ngo\u1ea1i th\u1ea5t ven bi\u1ec3n d\u1eabn \u0111\u1ebfn \u1ed1 nhanh.<br \/>\n&#8211; Tr\u1ed9n inox v\u1edbi v\u00edt th\u00e9p m\u1ea1 k\u1ebdm \u2014 \u0103n m\u00f2n \u0111i\u1ec7n h\u00f3a v\u00e0 \u1ed1 quanh l\u1ed7 v\u00edt.<br \/>\n&#8211; Kh\u00f4ng t\u1ea9y m\u00e0u nhi\u1ec7t m\u1ed1i h\u00e0n v\u00e0 b\u1ecf qua passivation sau gia c\u00f4ng.<br \/>\n&#8211; Ho\u00e0n thi\u1ec7n bead-blast ho\u1eb7c HL th\u00f4 nh\u01b0ng v\u1ec7 sinh th\u01b0a \u1edf v\u00f9ng bi\u1ec3n.<br \/>\n&#8211; Kh\u00f4ng tho\u00e1t n\u01b0\u1edbc cho ch\u00e2n gh\u1ebf, \u0111\u1ec3 n\u01b0\u1edbc t\u00f9 trong \u1ed1ng g\u00e2y r\u1ec9 tr\u00e0 \u1edf m\u00e9p n\u1eafp.<\/p>\n<h2 id=\"toc-11-nguon-cung-va-kiem-soat-chat-luong-tai-ha-noi\">Ngu\u1ed3n cung v\u00e0 ki\u1ec3m so\u00e1t ch\u1ea5t l\u01b0\u1ee3ng t\u1ea1i H\u00e0 N\u1ed9i<\/h2>\n<p>&#8211; Mua \u1ed1ng c\u01a1 kh\u00ed A554, t\u1ea5m A240 c\u00f3 MTC (Mill Test Certificate) ghi r\u00f5 m\u00e1c, th\u00e0nh ph\u1ea7n, c\u01a1 t\u00ednh.<br \/>\n&#8211; Ki\u1ec3m \u0111\u1ed9 d\u00e0y th\u1ef1c v\u00e0 dung sai theo A480; ki\u1ec3m b\u1ec1 m\u1eb7t (v\u1ebft x\u01b0\u1edbc, v\u1ebft c\u00e1n) tr\u01b0\u1edbc gia c\u00f4ng.<br \/>\n&#8211; Y\u00eau c\u1ea7u nh\u00e0 gia c\u00f4ng: H\u00e0n TIG\/MIG chu\u1ea9n, b\u00e0n ch\u1ea3i inox ri\u00eang (kh\u00f4ng d\u00f9ng chung v\u1edbi th\u00e9p cacbon), t\u1ea9y \u2013 th\u1ee5 \u0111\u1ed9ng h\u00f3a sau h\u00e0n, b\u1ea3o v\u1ec7 b\u1ec1 m\u1eb7t b\u1eb1ng film trong v\u1eadn chuy\u1ec3n.<br \/>\n&#8211; Ph\u1ee5 ki\u1ec7n \u0111\u1ed3ng b\u1ed9 A2\/A4, \u0111\u1ec7m c\u00e1ch \u0111i\u1ec7n, h\u01b0\u1edbng d\u1eabn v\u1ec7 sinh giao k\u00e8m s\u1ea3n ph\u1ea9m.<\/p>\n<h2 id=\"toc-12-ket-luan\">K\u1ebft lu\u1eadn<\/h2>\n<p>\u0110\u1ed9 b\u1ec1n c\u1ee7a b\u00e0n gh\u1ebf inox ngo\u00e0i tr\u1eddi quy\u1ebft \u0111\u1ecbnh tr\u01b0\u1edbc h\u1ebft b\u1edfi ch\u1ecdn m\u00e1c \u0111\u00fang m\u00f4i tr\u01b0\u1eddng (304 cho n\u1ed9i \u0111\u1ecba, 316\/316L cho ven bi\u1ec3n, duplex cho c\u1ef1c \u0111oan), sau \u0111\u00f3 l\u00e0 ho\u00e0n thi\u1ec7n b\u1ec1 m\u1eb7t m\u1ecbn + x\u1eed l\u00fd sau h\u00e0n, thi\u1ebft k\u1ebf tho\u00e1t n\u01b0\u1edbc kh\u00f4ng khe b\u1ea9n, ph\u1ee5 ki\u1ec7n \u0111\u1ed3ng b\u1ed9 A2\/A4 v\u00e0 m\u1ed9t l\u1ecbch b\u1ea3o tr\u00ec th\u1ef1c t\u1ebf. L\u00e0m \u0111\u00fang nh\u1eefng nguy\u00ean t\u1eafc c\u1ed1t l\u00f5i n\u00e0y s\u1ebd gi\u00fap b\u1ed9 b\u00e0n gh\u1ebf inox gi\u1eef ngo\u1ea1i quan, an to\u00e0n c\u01a1 h\u1ecdc v\u00e0 t\u1ed1i \u01b0u chi ph\u00ed v\u00f2ng \u0111\u1eddi trong kh\u00ed h\u1eadu kh\u1eafc nghi\u1ec7t c\u1ee7a Vi\u1ec7t Nam.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>H\u01b0\u1edbng d\u1eabn ch\u1ecdn m\u00e1c inox, \u0111\u1ed9 d\u00e0y, b\u1ec1 m\u1eb7t v\u00e0 ph\u1ee5 ki\u1ec7n \u0111\u1ec3 b\u00e0n gh\u1ebf ngo\u00e0i tr\u1eddi b\u1ec1n \u0111\u1eb9p tr\u01b0\u1edbc mu\u1ed1i, m\u01b0a axit, UV. So s\u00e1nh 201\/304\/316, b\u1ea3o tr\u00ec v\u00e0 gi\u00e1.<\/p>\n","protected":false},"author":7,"featured_media":1057,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[23],"tags":[],"class_list":["post-1266","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\/1266","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=1266"}],"version-history":[{"count":0,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/posts\/1266\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/media\/1057"}],"wp:attachment":[{"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/media?parent=1266"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/categories?post=1266"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/tags?post=1266"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}