{"id":1503,"date":"2026-01-02T12:34:10","date_gmt":"2026-01-02T05:34:10","guid":{"rendered":"https:\/\/inoxcuongthinh.com\/meo-xu-ly-vet-o-vang-can-canxi-vet-chay-tren-inox-hieu-qua\/"},"modified":"2026-01-02T12:34:10","modified_gmt":"2026-01-02T05:34:10","slug":"meo-xu-ly-vet-o-vang-can-canxi-vet-chay-tren-inox-hieu-qua","status":"publish","type":"post","link":"https:\/\/inoxcuongthinh.com\/meo-xu-ly-vet-o-vang-can-canxi-vet-chay-tren-inox-hieu-qua\/","title":{"rendered":"M\u1eb9o x\u1eed l\u00fd v\u1ebft \u1ed1 v\u00e0ng, c\u1eb7n canxi, v\u1ebft ch\u00e1y tr\u00ean inox hi\u1ec7u qu\u1ea3"},"content":{"rendered":"<div class=\"custom-toc\">\n<h3>N\u1ed9i dung ch\u00ednh<\/h3>\n<ul>\n<li><a href=\"#toc-0-nhan-dien-nhanh-ban-dang-gap-vet-gi\">Nh\u1eadn di\u1ec7n nhanh: b\u1ea1n \u0111ang g\u1eb7p v\u1ebft g\u00ec?<\/a><\/li>\n<li><a href=\"#toc-1-nguyen-tac-vang-truoc-khi-xu-ly\">Nguy\u00ean t\u1eafc v\u00e0ng tr\u01b0\u1edbc khi x\u1eed l\u00fd<\/a><\/li>\n<li><a href=\"#toc-2-quy-trinh-tong-quat-10-buoc\">Quy tr\u00ecnh t\u1ed5ng qu\u00e1t 10 b\u01b0\u1edbc<\/a><\/li>\n<li><a href=\"#toc-3-xu-ly-vet-o-vang-tren-inox\">X\u1eed l\u00fd v\u1ebft \u1ed1 v\u00e0ng tr\u00ean inox<\/a><\/li>\n<li><a href=\"#toc-4-xu-ly-can-canxi-limescale-tren-inox\">X\u1eed l\u00fd c\u1eb7n canxi (limescale) tr\u00ean inox<\/a><\/li>\n<li><a href=\"#toc-5-xu-ly-vet-chay-tren-inox\">X\u1eed l\u00fd v\u1ebft ch\u00e1y tr\u00ean inox<\/a><\/li>\n<li><a href=\"#toc-6-khuyen-nghi-theo-mac-inox-va-hoan-thien-be-mat\">Khuy\u1ebfn ngh\u1ecb theo m\u00e1c inox v\u00e0 ho\u00e0n thi\u1ec7n b\u1ec1 m\u1eb7t<\/a><\/li>\n<li><a href=\"#toc-7-phong-ngua-tai-ban-va-o-mau\">Ph\u00f2ng ng\u1eeba t\u00e1i b\u1ea9n v\u00e0 \u1ed1 m\u00e0u<\/a><\/li>\n<li><a href=\"#toc-8-cau-hoi-thuong-gap\">C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p<\/a><\/li>\n<li><a href=\"#toc-9-tai-lieu-tham-khao\">T\u00e0i li\u1ec7u tham kh\u1ea3o<\/a><\/li>\n<li><a href=\"#toc-10-ket-luan\">K\u1ebft lu\u1eadn<\/a><\/li>\n<\/ul>\n<\/div>\n<p>B\u00e0i vi\u1ebft n\u00e0y cung c\u1ea5p quy tr\u00ecnh v\u00e0 m\u1eb9o x\u1eed l\u00fd chuy\u00ean s\u00e2u cho ba d\u1ea1ng v\u1ebft b\u1ea9n c\u1ee9ng \u0111\u1ea7u th\u01b0\u1eddng g\u1eb7p tr\u00ean inox: v\u1ebft \u1ed1 v\u00e0ng, c\u1eb7n canxi v\u00e0 v\u1ebft ch\u00e1y. \u0110\u00e2y l\u00e0 n\u1ed9i dung thi\u1ebft y\u1ebfu trong b\u1ea3o d\u01b0\u1ee1ng \u2013 v\u1ec7 sinh \u2013 ph\u1ee5c h\u1ed3i s\u1ea3n ph\u1ea9m inox, gi\u00fap duy tr\u00ec \u0111\u1ed9 b\u1ec1n, th\u1ea9m m\u1ef9 v\u00e0 kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n c\u1ee7a v\u1eadt li\u1ec7u.<\/p>\n<h2 id=\"toc-0-nhan-dien-nhanh-ban-dang-gap-vet-gi\">Nh\u1eadn di\u1ec7n nhanh: b\u1ea1n \u0111ang g\u1eb7p v\u1ebft g\u00ec?<\/h2>\n<p>&#8211; V\u1ebft \u1ed1 v\u00e0ng (tea staining\/\u1ed1 m\u00e0u): M\u00e0u v\u00e0ng r\u01a1m \u0111\u1ebfn n\u00e2u nh\u1ea1t, loang theo chi\u1ec1u ch\u1ea3y n\u01b0\u1edbc ho\u1eb7c quanh m\u1ed1i gh\u00e9p. Th\u01b0\u1eddng do \u00f4 nhi\u1ec5m chloride, \u1ea9m cao, b\u1ec1 m\u1eb7t k\u00e9m th\u1ee5 \u0111\u1ed9ng, ho\u1eb7c b\u1ee5i s\u1eaft b\u00e1m.<br \/>\n&#8211; C\u1eb7n canxi (limescale): M\u00e0u tr\u1eafng \u0111\u1ee5c\/kem, c\u1ee9ng gi\u00f2n, b\u00e1m n\u01a1i ti\u1ebfp x\u00fac n\u01b0\u1edbc c\u1ee9ng (v\u00f2i, b\u1ed3n, \u1ea5m \u0111un). C\u00f3 th\u1ec3 k\u00e8m v\u1ec7t loang khi kh\u00f4.<br \/>\n&#8211; V\u1ebft ch\u00e1y:<br \/>\n  &#8211; Ch\u00e1y h\u1eefu c\u01a1 (d\u1ea7u m\u1ee1\/th\u1ee9c \u0103n ch\u00e1y): V\u1ec7t n\u00e2u \u0111en, d\u00ednh, c\u00f3 m\u00f9i kh\u00e9t, th\u01b0\u1eddng \u1edf ch\u1ea3o, b\u1ebfp, m\u1eb7t b\u00e0n gia c\u00f4ng.<br \/>\n  &#8211; Ch\u00e1y nhi\u1ec7t\/heat tint (m\u00e0u xanh t\u00edm\/n\u00e2u tr\u00ean v\u00f9ng h\u00e0n ho\u1eb7c b\u1ecb nung): Do \u00f4xy h\u00f3a crom tr\u00ean b\u1ec1 m\u1eb7t khi nhi\u1ec7t cao; l\u00e0m suy gi\u1ea3m l\u1edbp th\u1ee5 \u0111\u1ed9ng n\u1ebfu kh\u00f4ng x\u1eed l\u00fd.<\/p>\n<h2 id=\"toc-1-nguyen-tac-vang-truoc-khi-xu-ly\">Nguy\u00ean t\u1eafc v\u00e0ng tr\u01b0\u1edbc khi x\u1eed l\u00fd<\/h2>\n<p>&#8211; Lu\u00f4n th\u1eed \u1edf v\u00f9ng nh\u1ecf, khu\u1ea5t tr\u01b0\u1edbc khi l\u00e0m to\u00e0n b\u1ed9.<br \/>\n&#8211; D\u00f9ng g\u0103ng, k\u00ednh, kh\u1ea9u trang; th\u00f4ng gi\u00f3 t\u1ed1t. \u0110\u1ecdc SDS c\u1ee7a h\u00f3a ch\u1ea5t.<br \/>\n&#8211; Kh\u00f4ng d\u00f9ng: axit clohydric (HCl, \u201caxit muriatic\u201d), thu\u1ed1c t\u1ea9y Javen\/NaClO, len th\u00e9p (steel wool). Ch\u00fang g\u00e2y r\u1ed7, g\u1ec9 v\u00e0 nhi\u1ec5m s\u1eaft.<br \/>\n&#8211; Ch\u00e0 theo h\u01b0\u1edbng v\u00e2n (HL\/No.4). V\u1edbi b\u1ec1 m\u1eb7t g\u01b0\u01a1ng (BA\/No.8): tr\u00e1nh m\u00e0i m\u00f2n; \u01b0u ti\u00ean h\u00f3a ch\u1ea5t nh\u1eb9 v\u00e0 kh\u0103n s\u1ee3i nh\u1ecf.<br \/>\n&#8211; Sau m\u1ecdi b\u01b0\u1edbc h\u00f3a ch\u1ea5t: trung h\u00f2a r\u1ed3i x\u1ea3 n\u01b0\u1edbc s\u1ea1ch d\u1ed3i d\u00e0o, lau kh\u00f4 ngay \u0111\u1ec3 tr\u00e1nh \u1ed1 ng\u01b0\u1ee3c.<br \/>\n&#8211; V\u1edbi inox 201 nh\u1ea1y clorua h\u01a1n 304\/316: h\u1ea1 n\u1ed3ng \u0111\u1ed9, r\u00fat ng\u1eafn th\u1eddi gian ti\u1ebfp x\u00fac, r\u1eeda k\u1ef9 h\u01a1n.<\/p>\n<h2 id=\"toc-2-quy-trinh-tong-quat-10-buoc\">Quy tr\u00ecnh t\u1ed5ng qu\u00e1t 10 b\u01b0\u1edbc<\/h2>\n<p>1) Lo\u1ea1i b\u1ecf d\u1ea7u m\u1ee1 b\u1ec1 m\u1eb7t: dung d\u1ecbch t\u1ea9y r\u1eeda trung t\u00ednh pH 6\u20138 + n\u01b0\u1edbc \u1ea5m, l\u00e2u 2\u20135 ph\u00fat, lau s\u1ea1ch.<br \/>\n2) X\u00e1c \u0111\u1ecbnh lo\u1ea1i v\u1ebft (\u1ed1 v\u00e0ng\/canxi\/ch\u00e1y).<br \/>\n3) Ch\u1ecdn h\u00f3a ch\u1ea5t ph\u00f9 h\u1ee3p (xem c\u00e1c ph\u1ea7n b\u00ean d\u01b0\u1edbi).<br \/>\n4) Pha \u0111\u00fang t\u1ec9 l\u1ec7, chu\u1ea9n b\u1ecb d\u1ee5ng c\u1ee5: kh\u0103n microfiber, mi\u1ebfng pad s\u1ee3i nylon (tr\u1eafng\/maroon), ch\u1ed5i nylon m\u1ec1m.<br \/>\n5) Thoa\/nh\u00fang, canh th\u1eddi gian t\u00e1c d\u1ee5ng.<br \/>\n6) Khu\u1ea5y\/\u0111\u00e1nh nh\u1eb9 b\u1ec1 m\u1eb7t; kh\u00f4ng d\u00f9ng v\u1eadt li\u1ec7u s\u1eaft.<br \/>\n7) Trung h\u00f2a:<br \/>\n   &#8211; Sau axit: dung d\u1ecbch NaHCO3 1\u20132% (baking soda) 1\u20132 ph\u00fat.<br \/>\n   &#8211; Sau ki\u1ec1m: gi\u1ea5m \u0103n 2\u20135% 1\u20132 ph\u00fat.<br \/>\n8) X\u1ea3 n\u01b0\u1edbc s\u1ea1ch th\u1eadt k\u1ef9 (\u01b0u ti\u00ean n\u01b0\u1edbc m\u1ec1m\/DI), lau kh\u00f4.<br \/>\n9) Ki\u1ec3m tra; l\u1eb7p l\u1ea1i n\u1ebfu c\u1ea7n, t\u0103ng d\u1ea7n \u201c\u0111\u1ed9 m\u1ea1nh\u201d c\u00f3 ki\u1ec3m so\u00e1t.<br \/>\n10) T\u00f9y tr\u01b0\u1eddng h\u1ee3p: th\u1ee5 \u0111\u1ed9ng h\u00f3a (citric) \u0111\u1ec3 ph\u1ee5c h\u1ed3i l\u1edbp b\u1ea3o v\u1ec7.<\/p>\n<h2 id=\"toc-3-xu-ly-vet-o-vang-tren-inox\">X\u1eed l\u00fd v\u1ebft \u1ed1 v\u00e0ng tr\u00ean inox<\/h2>\n<h3>Nguy\u00ean nh\u00e2n ch\u00ednh<\/h3>\n<p>&#8211; L\u1edbp th\u1ee5 \u0111\u1ed9ng suy y\u1ebfu do gia c\u00f4ng c\u01a1 kh\u00ed, h\u00e0n, ho\u1eb7c m\u00f4i tr\u01b0\u1eddng chloride (g\u1ea7n bi\u1ec3n, h\u00f3a ch\u1ea5t t\u1ea9y r\u1eeda ch\u1ee9a Cl).<br \/>\n&#8211; N\u01b0\u1edbc \u0111\u1ecdng k\u00e9o d\u00e0i tr\u00ean b\u1ec1 m\u1eb7t nh\u00e1m\/kh\u00f4ng \u0111\u1ed3ng \u0111\u1ec1u.<\/p>\n<h3>Ph\u00e1c \u0111\u1ed3 x\u1eed l\u00fd t\u1eeb nh\u1eb9 \u0111\u1ebfn m\u1ea1nh<\/h3>\n<p>&#8211; M\u1ee9c 1 \u2013 V\u1ebft nh\u1eb9\/\u1ed1 m\u1edbi:<br \/>\n  &#8211; Dung d\u1ecbch x\u00e0 ph\u00f2ng trung t\u00ednh + kh\u0103n microfiber.<br \/>\n  &#8211; N\u1ebfu c\u00f2n: Isopropyl alcohol 70% lau degrease, r\u1ed3i r\u1eeda n\u01b0\u1edbc.<br \/>\n&#8211; M\u1ee9c 2 \u2013 \u1ed0 m\u00e0u r\u00f5:<br \/>\n  &#8211; Axit citric 5\u201310% (50\u2013100 g b\u1ed9t citric h\u00f2a 1 L n\u01b0\u1edbc \u1ea5m). Thoa 5\u201310 ph\u00fat; ch\u00e0 nh\u1eb9 pad tr\u1eafng; trung h\u00f2a, x\u1ea3, lau kh\u00f4.<br \/>\n  &#8211; Ho\u1eb7c axit oxalic 5\u201310% d\u1ea1ng kem\/b\u1ed9t (nh\u01b0 nh\u00f3m ch\u1ea5t trong \u201coxalic cleanser\u201d): b\u00f4i 1\u20133 ph\u00fat; kh\u00f4ng \u0111\u1ec3 kh\u00f4; ch\u00e0 nh\u1eb9; r\u1eeda k\u1ef9.<br \/>\n&#8211; M\u1ee9c 3 \u2013 \u1ed0 dai, c\u00f3 nhi\u1ec5m s\u1eaft b\u1ec1 m\u1eb7t:<br \/>\n  &#8211; Dung d\u1ecbch t\u1ea9y g\u1ec9\/chelating kh\u00f4ng clorua (g\u1ed1c citric\/oxalic + ch\u1ea5t t\u1ea1o ph\u1ee9c). Th\u1ef1c hi\u1ec7n theo h\u01b0\u1edbng d\u1eabn NSX; sau \u0111\u00f3 th\u1ee5 \u0111\u1ed9ng h\u00f3a citric 4\u201310% trong 10\u201330 ph\u00fat \u0111\u1ec3 ph\u1ee5c h\u1ed3i l\u1edbp th\u1ee5 \u0111\u1ed9ng Cr2O3.<\/p>\n<p>L\u01b0u \u00fd: Tr\u00e1nh d\u00f9ng s\u1ea3n ph\u1ea9m c\u00f3 clo. N\u1ebfu b\u1ec1 m\u1eb7t l\u00e0 g\u01b0\u01a1ng BA, \u01b0u ti\u00ean dung d\u1ecbch citric\/oxalic lo\u00e3ng v\u00e0 kh\u0103n m\u1ec1m; kh\u00f4ng d\u00f9ng pad m\u00e0i.<\/p>\n<h2 id=\"toc-4-xu-ly-can-canxi-limescale-tren-inox\">X\u1eed l\u00fd c\u1eb7n canxi (limescale) tr\u00ean inox<\/h2>\n<h3>Nguy\u00ean t\u1eafc<\/h3>\n<p>C\u1eb7n canxi l\u00e0 mu\u1ed1i carbonate\/sulfate kim lo\u1ea1i; tan t\u1ed1t trong axit y\u1ebfu. Tr\u00e1nh HCl v\u00ec g\u00e2y r\u1ed7 inox.<\/p>\n<h3>Quy tr\u00ecnh \u0111\u1ec1 xu\u1ea5t<\/h3>\n<p>&#8211; B\u01b0\u1edbc 1: L\u00e0m \u01b0\u1edbt b\u1ec1 m\u1eb7t, lo\u1ea1i b\u1ecf b\u1ee5i\/r\u00e1c.<br \/>\n&#8211; B\u01b0\u1edbc 2: Ch\u1ecdn axit y\u1ebfu:<br \/>\n  &#8211; Gi\u1ea5m \u0103n 5\u20138% axit acetic: cho v\u1ebft m\u1ecfng\/n\u00f4ng.<br \/>\n  &#8211; Axit citric 5\u201310%: hi\u1ec7u qu\u1ea3 v\u00e0 an to\u00e0n h\u01a1n cho inox, \u00edt m\u00f9i.<br \/>\n  &#8211; V\u1edbi c\u1eb7n d\u00e0y: ch\u1ea5t t\u1ea9y c\u1eb7n g\u1ed1c axit phosphoric 10\u201320% (descaler kh\u00f4ng ch\u1ee9a Cl).<br \/>\n&#8211; B\u01b0\u1edbc 3: Thoa\/nh\u00fang 5\u201315 ph\u00fat (phosphoric 3\u201310 ph\u00fat). Kh\u00f4ng \u0111\u1ec3 kh\u00f4; c\u00f3 th\u1ec3 \u0111\u1eafp kh\u0103n th\u1ea5m dung d\u1ecbch \u0111\u1ec3 gi\u1eef \u1ea9m.<br \/>\n&#8211; B\u01b0\u1edbc 4: Ch\u00e0 nh\u1eb9 b\u1eb1ng b\u00e0n ch\u1ea3i nylon ho\u1eb7c pad tr\u1eafng theo h\u01b0\u1edbng v\u00e2n.<br \/>\n&#8211; B\u01b0\u1edbc 5: Trung h\u00f2a b\u1eb1ng NaHCO3 1\u20132%, x\u1ea3 n\u01b0\u1edbc s\u1ea1ch nhi\u1ec1u l\u1ea7n, lau kh\u00f4.<\/p>\n<p>M\u1eb9o n\u00e2ng cao:<br \/>\n&#8211; C\u1eb7n \u1edf m\u00e9p v\u00f2i\/b\u1ed3n: qu\u1ea5n kh\u0103n gi\u1ea5y th\u1ea5m citric 10% quanh v\u1ecb tr\u00ed 15\u201330 ph\u00fat, sau \u0111\u00f3 ch\u00e0 \u2013 r\u1eeda.<br \/>\n&#8211; V\u1ec7t loang n\u01b0\u1edbc c\u1ee9ng tr\u00ean m\u1eb7t t\u1ee7 b\u1ebfp\/thi\u1ebft b\u1ecb: phun citric 5%, lau \u0111\u1ec1u; r\u1eeda \u2013 lau kh\u00f4 ngay \u0111\u1ec3 tr\u00e1nh v\u1ec7t m\u1edbi.<br \/>\n&#8211; N\u1ebfu c\u1eb7n c\u00f3 l\u1eabn g\u1ec9 n\u00e2u: d\u00f9ng oxalic 5% tr\u01b0\u1edbc \u0111\u1ec3 nh\u1ea5c g\u1ec9, r\u1ed3i chuy\u1ec3n sang citric\/phosphoric cho ph\u1ea7n kho\u00e1ng.<\/p>\n<h2 id=\"toc-5-xu-ly-vet-chay-tren-inox\">X\u1eed l\u00fd v\u1ebft ch\u00e1y tr\u00ean inox<\/h2>\n<h3>Ch\u00e1y h\u1eefu c\u01a1 (d\u1ea7u m\u1ee1\/th\u1ee9c \u0103n ch\u00e1y, l\u1edbp than \u0111en)<\/h3>\n<p>&#8211; B\u01b0\u1edbc 1: Ng\u00e2m n\u00f3ng (n\u1ebfu c\u00f3 th\u1ec3) v\u1edbi dung d\u1ecbch ki\u1ec1m nh\u1eb9:<br \/>\n  &#8211; Baking soda 30\u201350 g\/L + n\u01b0\u1edbc n\u00f3ng 60\u201380\u00b0C trong 20\u201340 ph\u00fat; ho\u1eb7c<br \/>\n  &#8211; Ch\u1ea5t t\u1ea9y d\u1ea7u m\u1ee1 ki\u1ec1m nh\u1eb9 (non-caustic degreaser) theo h\u01b0\u1edbng d\u1eabn.<br \/>\n&#8211; B\u01b0\u1edbc 2: C\u1ea1o m\u1ec1m b\u1eb1ng th\u00eca g\u1ed7\/nh\u1ef1a; tuy\u1ec7t \u0111\u1ed1i kh\u00f4ng d\u00f9ng dao th\u00e9p.<br \/>\n&#8211; B\u01b0\u1edbc 3: B\u00f4i kem oxalic 5\u201310% 1\u20133 ph\u00fat cho v\u1ec7t n\u00e2u c\u00f2n l\u1ea1i; ch\u00e0 pad tr\u1eafng.<br \/>\n&#8211; B\u01b0\u1edbc 4: R\u1eeda, trung h\u00f2a (gi\u1ea5m 2\u20135%), x\u1ea3, lau kh\u00f4.<\/p>\n<p>M\u1eb9o: V\u1edbi xoong n\u1ed3i ch\u00e1y kh\u00e9t d\u00e0y, \u0111un s\u00f4i dung d\u1ecbch baking soda 10\u201320 g\/L 10\u201315 ph\u00fat tr\u01b0\u1edbc khi ch\u00e0. C\u00f3 th\u1ec3 th\u00eam v\u00e0i gi\u1ecdt ch\u1ea5t r\u1eeda ch\u00e9n \u0111\u1ec3 nh\u0169 h\u00f3a d\u1ea7u.<\/p>\n<h3>Ch\u00e1y nhi\u1ec7t\/heat tint (\u0111\u1ed5i m\u00e0u xanh t\u00edm\/n\u00e2u quanh m\u1ed1i h\u00e0n ho\u1eb7c v\u00f9ng b\u1ecb nung)<\/h3>\n<p>Th\u1ee9 t\u1ef1 \u01b0u ti\u00ean an to\u00e0n \u2013 hi\u1ec7u qu\u1ea3:<br \/>\n&#8211; C\u1ea5p 1: C\u01a1 \u2013 h\u00f3a nh\u1eb9<br \/>\n  &#8211; Kem oxalic 5\u201310% b\u00f4i 2\u20135 ph\u00fat; l\u1eb7p 2\u20133 chu k\u1ef3.<br \/>\n  &#8211; Ch\u00e0 c\u01a1 h\u1ecdc c\u00f3 ki\u1ec3m so\u00e1t b\u1eb1ng pad s\u1ee3i kh\u00f4ng d\u1ec7t (3M Scotch-Brite maroon\/grey), h\u1ea1t m\u1ecbn, theo h\u01b0\u1edbng v\u00e2n. Tr\u00e1nh gi\u1ea5y nh\u00e1m th\u00f4 l\u00e0m h\u1eb1n.<br \/>\n&#8211; C\u1ea5p 2: H\u00f3a ch\u1ea5t th\u1ee5 \u0111\u1ed9ng\/lo\u1ea1i b\u1ecf \u00f4xy h\u00f3a n\u1eb7ng<br \/>\n  &#8211; Gel\/ph\u1ed1i tr\u1ed9n g\u1ed1c phosphoric ho\u1eb7c citric chuy\u00ean d\u1ee5ng cho heat tint. Th\u1eddi gian 5\u201320 ph\u00fat t\u00f9y NSX.<br \/>\n  &#8211; Sau l\u00e0m s\u1ea1ch, th\u1ef1c hi\u1ec7n b\u01b0\u1edbc th\u1ee5 \u0111\u1ed9ng h\u00f3a citric 4\u201310% trong 10\u201330 ph\u00fat \u0111\u1ec3 t\u00e1i t\u1ea1o l\u1edbp Cr2O3.<br \/>\n&#8211; C\u1ea5p 3: Gi\u1ea3i ph\u00e1p chuy\u00ean nghi\u1ec7p (khi heat tint r\u1ed9ng\/s\u00e2u, y\u00eau c\u1ea7u \u0111\u1ed3ng \u0111\u1ec1u th\u1ea9m m\u1ef9)<br \/>\n  &#8211; L\u00e0m s\u1ea1ch \u0111i\u1ec7n h\u00f3a (electrochemical weld cleaning) d\u00f9ng \u0111i\u1ec7n gi\u1ea3i g\u1ed1c phosphoric: hi\u1ec7u qu\u1ea3, \u0111\u1ed3ng \u0111\u1ec1u, \u00edt x\u00e2m th\u1ef1c.<br \/>\n  &#8211; T\u1ea9y m\u1ed1i h\u00e0n\/pickling paste g\u1ed1c h\u1ed7n h\u1ee3p nitric + hydrofluoric ch\u1ec9 do \u0111\u01a1n v\u1ecb \u0111\u01b0\u1ee3c \u0111\u00e0o t\u1ea1o th\u1ef1c hi\u1ec7n; tu\u00e2n th\u1ee7 nghi\u00eam an to\u00e0n v\u00e0 quy \u0111\u1ecbnh x\u1ea3 th\u1ea3i.<\/p>\n<p>Ghi ch\u00fa: Heat tint th\u1ef1c ch\u1ea5t l\u00e0 l\u1edbp \u00f4x\u00edt crom d\u00e0y h\u00f3a \u2013 n\u1ebfu kh\u00f4ng lo\u1ea1i b\u1ecf tri\u1ec7t \u0111\u1ec3 v\u00e0 th\u1ee5 \u0111\u1ed9ng l\u1ea1i, v\u00f9ng n\u00e0y d\u1ec5 \u0103n m\u00f2n \u0111i\u1ec3m trong m\u00f4i tr\u01b0\u1eddng chloride.<\/p>\n<h2 id=\"toc-6-khuyen-nghi-theo-mac-inox-va-hoan-thien-be-mat\">Khuy\u1ebfn ngh\u1ecb theo m\u00e1c inox v\u00e0 ho\u00e0n thi\u1ec7n b\u1ec1 m\u1eb7t<\/h2>\n<p>&#8211; Inox 201: Kh\u00e1ng chloride k\u00e9m nh\u1ea5t trong nh\u00f3m th\u00f4ng d\u1ee5ng; r\u00fat ng\u1eafn th\u1eddi gian ti\u1ebfp x\u00fac h\u00f3a ch\u1ea5t, tr\u00e1nh m\u00f4i tr\u01b0\u1eddng \u1ea9m + mu\u1ed1i; t\u0103ng t\u1ea7n su\u1ea5t v\u1ec7 sinh.<br \/>\n&#8211; Inox 304: C\u00e2n b\u1eb1ng chi ph\u00ed \u2013 b\u1ec1n; ph\u00f9 h\u1ee3p \u0111a s\u1ed1 \u1ee9ng d\u1ee5ng trong nh\u00e0\/x\u01b0\u1edfng kh\u00f4; ch\u00fa \u00fd tr\u00e1nh NaClO\/HCl.<br \/>\n&#8211; Inox 316: \u01afu ti\u00ean cho m\u00f4i tr\u01b0\u1eddng ven bi\u1ec3n\/h\u00f3a ch\u1ea5t chloride; d\u1ec5 b\u1ea3o to\u00e0n th\u1ea9m m\u1ef9 h\u01a1n khi v\u1ec7 sinh axit nh\u1eb9.<br \/>\n&#8211; Ho\u00e0n thi\u1ec7n b\u1ec1 m\u1eb7t:<br \/>\n  &#8211; Hairline\/No.4: ch\u00e0 theo v\u00e2n; d\u00f9ng pad h\u1ea1t m\u1ecbn.<br \/>\n  &#8211; 2B: d\u1ec5 v\u1ec7 sinh; h\u1ea1n ch\u1ebf m\u00e0i.<br \/>\n  &#8211; BA\/No.8 (g\u01b0\u01a1ng): ch\u1ec9 d\u00f9ng h\u00f3a ch\u1ea5t nh\u1eb9, kh\u0103n m\u1ec1m; tuy\u1ec7t \u0111\u1ed1i tr\u00e1nh m\u00e0i.<\/p>\n<h2 id=\"toc-7-phong-ngua-tai-ban-va-o-mau\">Ph\u00f2ng ng\u1eeba t\u00e1i b\u1ea9n v\u00e0 \u1ed1 m\u00e0u<\/h2>\n<p>&#8211; R\u1eeda \u2013 lau kh\u00f4: Sau ti\u1ebfp x\u00fac n\u01b0\u1edbc, \u0111\u1eb7c bi\u1ec7t n\u01b0\u1edbc c\u1ee9ng, lau kh\u00f4 ngay b\u1eb1ng microfiber.<br \/>\n&#8211; N\u01b0\u1edbc: N\u1ebfu c\u00f3 th\u1ec3, d\u00f9ng n\u01b0\u1edbc m\u1ec1m\/DI cho l\u1ea7n x\u1ea3 cu\u1ed1i.<br \/>\n&#8211; Tr\u00e1nh clo: Kh\u00f4ng d\u00f9ng thu\u1ed1c t\u1ea9y Javen\/ch\u1ea5t c\u00f3 clorua; n\u1ebfu b\u1eaft bu\u1ed9c (m\u00f4i tr\u01b0\u1eddng s\u00e1t khu\u1ea9n), ti\u1ebfp x\u00fac th\u1eadt ng\u1eafn, r\u1eeda n\u01b0\u1edbc k\u1ef9, lau kh\u00f4.<br \/>\n&#8211; T\u00e1ch bi\u1ec7t d\u1ee5ng c\u1ee5: Kh\u00f4ng d\u00f9ng b\u00e0n ch\u1ea3i\/len th\u00e9p; tr\u00e1nh tia l\u1eeda, b\u1ee5i s\u1eaft b\u1eafn l\u00ean b\u1ec1 m\u1eb7t inox.<br \/>\n&#8211; B\u1ea3o d\u01b0\u1ee1ng \u0111\u1ecbnh k\u1ef3: V\u1ec7 sinh nh\u1eb9 h\u00e0ng tu\u1ea7n; th\u1ee5 \u0111\u1ed9ng h\u00f3a citric \u0111\u1ecbnh k\u1ef3 6\u201312 th\u00e1ng cho b\u1ec1 m\u1eb7t l\u00e0m vi\u1ec7c n\u1eb7ng\/ven bi\u1ec3n.<br \/>\n&#8211; B\u1ea3o v\u1ec7 b\u1ec1 m\u1eb7t: C\u00f3 th\u1ec3 ph\u1ee7 l\u1edbp b\u1ea3o v\u1ec7 m\u1ecfng g\u1ed1c polymer\/silicone chuy\u00ean d\u1ee5ng cho inox \u0111\u1ec3 gi\u1ea3m b\u00e1m n\u01b0\u1edbc v\u00e0 v\u1ebft tay (theo h\u01b0\u1edbng d\u1eabn NSX).<\/p>\n<h2 id=\"toc-8-cau-hoi-thuong-gap\">C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p<\/h2>\n<p>&#8211; C\u00f3 c\u1ea7n trung h\u00f2a sau khi d\u00f9ng axit y\u1ebfu nh\u01b0 gi\u1ea5m\/citric? C\u00f3. B\u01b0\u1edbc trung h\u00f2a nhanh b\u1eb1ng NaHCO3 1\u20132% gi\u00fap d\u1eebng ph\u1ea3n \u1ee9ng v\u00e0 gi\u1ea3m nguy c\u01a1 \u1ed1 ng\u01b0\u1ee3c, \u0111\u1eb7c bi\u1ec7t tr\u00ean 201\/304.<br \/>\n&#8211; V\u00ec sao d\u00f9ng HCl l\u1ea1i h\u1ecfng inox? Ion Cl- g\u00e2y \u0103n m\u00f2n r\u1ed7, ph\u00e1 l\u1edbp th\u1ee5 \u0111\u1ed9ng; HCl th\u00e2m nh\u1eadp s\u00e2u, kh\u00f3 trung h\u00f2a ho\u00e0n to\u00e0n.<br \/>\n&#8211; L\u00e0m sao bi\u1ebft c\u00f3 nhi\u1ec5m s\u1eaft b\u1ec1 m\u1eb7t? D\u1ea5u \u1ed1 n\u00e2u t\u00e1i ph\u00e1t nhanh sau v\u1ec7 sinh; test nhanh b\u1eb1ng dung d\u1ecbch ph\u00e1t hi\u1ec7n s\u1eaft (ferroxyl). Khi \u0111\u00f3 d\u00f9ng t\u1ea9y g\u1ec9\/chelating v\u00e0 th\u1ee5 \u0111\u1ed9ng h\u00f3a.<br \/>\n&#8211; Khi n\u00e0o c\u1ea7n g\u1ecdi chuy\u00ean gia? Heat tint r\u1ed9ng \u1edf k\u1ebft c\u1ea5u h\u00e0n, b\u1ec1 m\u1eb7t g\u01b0\u01a1ng gi\u00e1 tr\u1ecb cao, ho\u1eb7c khi \u0111\u00e3 xu\u1ea5t hi\u1ec7n pitting\/r\u1ed7 li ti.<\/p>\n<h2 id=\"toc-9-tai-lieu-tham-khao\">T\u00e0i li\u1ec7u tham kh\u1ea3o<\/h2>\n<p>&#8211; ASTM A380\/A380M \u2013 Cleaning, Descaling, and Passivation of Stainless Steel Parts (\u0111\u1ecbnh h\u01b0\u1edbng quy tr\u00ecnh v\u1ec7 sinh v\u00e0 th\u1ee5 \u0111\u1ed9ng h\u00f3a).<br \/>\n&#8211; ASTM A967\/A967M \u2013 Chemical Passivation Treatments for Stainless Steel.<br \/>\n&#8211; Nickel Institute \u2013 Care and cleaning of stainless steel: https:\/\/www.nickelinstitute.org<br \/>\n&#8211; Euro Inox \u2013 Care and Maintenance of Stainless Steel: https:\/\/www.worldstainless.org<br \/>\n&#8211; 3M Scotch-Brite Surface Conditioning Technical Data (khuy\u1ebfn ngh\u1ecb pad kh\u00f4ng d\u1ec7t cho inox).<\/p>\n<h2 id=\"toc-10-ket-luan\">K\u1ebft lu\u1eadn<\/h2>\n<p>&#8211; \u1ed0 v\u00e0ng: \u01b0u ti\u00ean citric\/oxalic n\u1ed3ng \u0111\u1ed9 th\u1ea5p, th\u1ee5 \u0111\u1ed9ng h\u00f3a l\u1ea1i khi c\u1ea7n.<br \/>\n&#8211; C\u1eb7n canxi: d\u00f9ng axit y\u1ebfu (citric\/gi\u1ea5m) cho l\u1edbp m\u1ecfng; phosphoric 10\u201320% cho l\u1edbp d\u00e0y; tuy\u1ec7t \u0111\u1ed1i tr\u00e1nh HCl.<br \/>\n&#8211; V\u1ebft ch\u00e1y: ph\u00e2n bi\u1ec7t ch\u00e1y h\u1eefu c\u01a1 (x\u1eed l\u00fd ki\u1ec1m + oxalic) v\u00e0 ch\u00e1y nhi\u1ec7t\/heat tint (oxalic\/phosphoric, c\u01a1 h\u1ecdc nh\u1eb9, ho\u1eb7c l\u00e0m s\u1ea1ch \u0111i\u1ec7n h\u00f3a).<br \/>\nTu\u00e2n th\u1ee7 nguy\u00ean t\u1eafc an to\u00e0n \u2013 th\u1eed \u0111i\u1ec3m \u2013 trung h\u00f2a \u2013 x\u1ea3 s\u1ea1ch \u2013 lau kh\u00f4 s\u1ebd gi\u00fap inox b\u1ec1n \u0111\u1eb9p v\u00e0 gi\u1eef nguy\u00ean kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n.<\/p>\n<p>C\u1ea7n t\u01b0 v\u1ea5n theo v\u1eadt li\u1ec7u th\u1ef1c t\u1ebf (201\/304\/316), ho\u00e0n thi\u1ec7n b\u1ec1 m\u1eb7t v\u00e0 \u1ee9ng d\u1ee5ng t\u1ea1i x\u01b0\u1edfng\/ c\u00f4ng tr\u00ecnh? Li\u00ean h\u1ec7 Inox C\u01b0\u1eddng Th\u1ecbnh \u0111\u1ec3 \u0111\u01b0\u1ee3c k\u1ef9 s\u01b0 h\u1ed7 tr\u1ee3 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>H\u01b0\u1edbng d\u1eabn chu\u1ea9n x\u1eed l\u00fd \u1ed1 v\u00e0ng, c\u1eb7n canxi, v\u1ebft ch\u00e1y tr\u00ean inox: h\u00f3a ch\u1ea5t an to\u00e0n, t\u1ec9 l\u1ec7 pha, th\u1eddi gian, trung h\u00f2a v\u00e0 m\u1eb9o ch\u1ed1ng t\u00e1i b\u1ea9n.<\/p>\n","protected":false},"author":7,"featured_media":1001,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[23],"tags":[],"class_list":["post-1503","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\/1503","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=1503"}],"version-history":[{"count":0,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/posts\/1503\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/media\/1001"}],"wp:attachment":[{"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/media?parent=1503"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/categories?post=1503"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/tags?post=1503"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}