{"id":1874,"date":"2026-04-07T00:33:56","date_gmt":"2026-04-06T17:33:56","guid":{"rendered":"https:\/\/inoxcuongthinh.com\/bao-duong-phuc-hoi-be-mat-inox-guong-xuoc-mo-chuan-ky-thuat\/"},"modified":"2026-04-07T00:33:56","modified_gmt":"2026-04-06T17:33:56","slug":"bao-duong-phuc-hoi-be-mat-inox-guong-xuoc-mo-chuan-ky-thuat","status":"publish","type":"post","link":"https:\/\/inoxcuongthinh.com\/bao-duong-phuc-hoi-be-mat-inox-guong-xuoc-mo-chuan-ky-thuat\/","title":{"rendered":"B\u1ea3o d\u01b0\u1ee1ng &#038; ph\u1ee5c h\u1ed3i b\u1ec1 m\u1eb7t Inox: g\u01b0\u01a1ng, x\u01b0\u1edbc, m\u1edd chu\u1ea9n k\u1ef9 thu\u1eadt"},"content":{"rendered":"<div class=\"custom-toc\">\n<h3>N\u1ed9i dung ch\u00ednh<\/h3>\n<ul>\n<li><a href=\"#toc-0-phan-loai-be-mat-inox-va-rui-ro-thuong-gap\">Ph\u00e2n lo\u1ea1i b\u1ec1 m\u1eb7t inox v\u00e0 r\u1ee7i ro th\u01b0\u1eddng g\u1eb7p<\/a><\/li>\n<li><a href=\"#toc-1-nguyen-tac-vang-khi-bao-duong-inox\">Nguy\u00ean t\u1eafc v\u00e0ng khi b\u1ea3o d\u01b0\u1ee1ng inox<\/a><\/li>\n<li><a href=\"#toc-2-lich-bao-tri-goi-y-theo-ung-dung\">L\u1ecbch b\u1ea3o tr\u00ec g\u1ee3i \u00fd theo \u1ee9ng d\u1ee5ng<\/a><\/li>\n<li><a href=\"#toc-3-quy-trinh-chuan-cho-tung-loai-be-mat\">Quy tr\u00ecnh chu\u1ea9n cho t\u1eebng lo\u1ea1i b\u1ec1 m\u1eb7t<\/a><\/li>\n<li><a href=\"#toc-4-xu-ly-o-vangtea-staining-va-ri-be-mat\">X\u1eed l\u00fd \u1ed1 v\u00e0ng\/\u201ctea-staining\u201d v\u00e0 r\u1ec9 b\u1ec1 m\u1eb7t<\/a><\/li>\n<li><a href=\"#toc-5-bao-ve-sau-phuc-hoi-lop-phu-va-lua-chon-vat-lieu\">B\u1ea3o v\u1ec7 sau ph\u1ee5c h\u1ed3i: l\u1edbp ph\u1ee7 v\u00e0 l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u<\/a><\/li>\n<li><a href=\"#toc-6-vat-tu-va-dung-cu-de-xuat-cho-xuongdoi-thi-cong\">V\u1eadt t\u01b0 v\u00e0 d\u1ee5ng c\u1ee5 \u0111\u1ec1 xu\u1ea5t cho x\u01b0\u1edfng\/\u0111\u1ed9i thi c\u00f4ng<\/a><\/li>\n<li><a href=\"#toc-7-an-toan-hoa-chat-va-moi-truong\">An to\u00e0n h\u00f3a ch\u1ea5t v\u00e0 m\u00f4i tr\u01b0\u1eddng<\/a><\/li>\n<li><a href=\"#toc-8-cac-loi-pho-bien-va-cach-tranh\">C\u00e1c l\u1ed7i ph\u1ed5 bi\u1ebfn v\u00e0 c\u00e1ch tr\u00e1nh<\/a><\/li>\n<li><a href=\"#toc-9-truong-hop-dien-hinh-va-thoi-luong-tham-khao\">Tr\u01b0\u1eddng h\u1ee3p \u0111i\u1ec3n h\u00ecnh v\u00e0 th\u1eddi l\u01b0\u1ee3ng tham kh\u1ea3o<\/a><\/li>\n<li><a href=\"#toc-10-tai-lieu-tham-khao\">T\u00e0i li\u1ec7u tham kh\u1ea3o<\/a><\/li>\n<li><a href=\"#toc-11-ket-luan\">K\u1ebft lu\u1eadn<\/a><\/li>\n<\/ul>\n<\/div>\n<p>B\u1ea3o d\u01b0\u1ee1ng v\u00e0 ph\u1ee5c h\u1ed3i b\u1ec1 m\u1eb7t inox (g\u01b0\u01a1ng, x\u01b0\u1edbc, m\u1edd) \u0111\u00f2i h\u1ecfi hi\u1ec3u r\u00f5 \u0111\u1eb7c t\u00ednh t\u1eebng ho\u00e0n thi\u1ec7n v\u00e0 \u00e1p d\u1ee5ng \u0111\u00fang quy tr\u00ecnh, v\u1eadt t\u01b0, ti\u00eau chu\u1ea9n. B\u00e0i vi\u1ebft n\u00e0y l\u00e0 h\u01b0\u1edbng d\u1eabn th\u1ef1c h\u00e0nh chi ti\u1ebft, gi\u00fap k\u1ef9 s\u01b0, th\u1ea7u thi c\u00f4ng, x\u01b0\u1edfng gia c\u00f4ng x\u1eed l\u00fd t\u1ed1i \u01b0u t\u1eeb v\u1ec7 sinh \u0111\u1ecbnh k\u1ef3 \u0111\u1ebfn ph\u1ee5c h\u1ed3i chuy\u00ean s\u00e2u, \u0111\u1ec3 b\u1ec1 m\u1eb7t \u0111\u1ea1t th\u1ea9m m\u1ef9 v\u00e0 b\u1ec1n \u0103n m\u00f2n nh\u01b0 ban \u0111\u1ea7u. Ch\u1ee7 \u0111\u1ec1 n\u00e0y n\u1eb1m trong ngh\u1ec7 thu\u1eadt ho\u00e0n thi\u1ec7n b\u1ec1 m\u1eb7t inox (\u0111\u00e1nh b\u00f3ng, \u0111\u00e1nh x\u01b0\u1edbc v\u00e0 l\u1edbp ph\u1ee7), nh\u01b0ng n\u1ed9i dung d\u01b0\u1edbi \u0111\u00e2y ho\u00e0n to\u00e0n \u0111\u1ed9c l\u1eadp v\u00e0 \u0111i th\u1eb3ng v\u00e0o c\u00e1ch l\u00e0m chu\u1ea9n cho t\u1eebng lo\u1ea1i b\u1ec1 m\u1eb7t.<\/p>\n<h2 id=\"toc-0-phan-loai-be-mat-inox-va-rui-ro-thuong-gap\">Ph\u00e2n lo\u1ea1i b\u1ec1 m\u1eb7t inox v\u00e0 r\u1ee7i ro th\u01b0\u1eddng g\u1eb7p<\/h2>\n<p>&#8211; G\u01b0\u01a1ng (BA\/No.8): \u0110\u1ed9 ph\u1ea3n chi\u1ebfu cao, Ra ~0.05\u20130.1 \u00b5m. D\u1ec5 l\u1ed9 xo\u00e1y, x\u01b0\u1edbc t\u00f3c, \u1ed1 n\u01b0\u1edbc v\u00e0 v\u1ebft lau. Y\u00eau c\u1ea7u h\u00f3a ch\u1ea5t kh\u00f4ng m\u00e0i m\u00f2n v\u00e0 k\u1ef9 thu\u1eadt \u0111\u00e1nh b\u00f3ng tinh.<br \/>\n&#8211; X\u01b0\u1edbc (No.4 Satin 180\u2013240 grit; Hairline HL 320\u2013400 grit): C\u00f3 h\u01b0\u1edbng h\u1ea1t. \u01afu \u0111i\u1ec3m che d\u1ea5u v\u1ebft tay; nh\u01b0\u1ee3c \u0111i\u1ec3m d\u1ec5 l\u1ed9 x\u01b0\u1edbc ng\u01b0\u1ee3c h\u1ea1t, kh\u00f3 \u201cch\u1eafp v\u00e1\u201d n\u1ebfu l\u00e0m sai h\u01b0\u1edbng.<br \/>\n&#8211; M\u1edd (2B c\u00e1n ngu\u1ed9i, ho\u1eb7c m\u1edd do phun bi\/phun c\u00e1t): Ph\u1ea3n x\u1ea1 khu\u1ebfch t\u00e1n, \u00edt ch\u00f3i. 2B c\u00f3 v\u00e2n c\u00e1n nh\u1eb9; bead-blast \u0111\u1ed3ng nh\u1ea5t nh\u01b0ng r\u1ea5t kh\u00f3 s\u1eeda c\u1ee5c b\u1ed9, th\u01b0\u1eddng ph\u1ea3i x\u1eed l\u00fd to\u00e0n t\u1ea5m.<\/p>\n<p>R\u1ee7i ro theo m\u00f4i tr\u01b0\u1eddng:<br \/>\n&#8211; Trong nh\u00e0 \u1ea9m: d\u1ec5 \u1ed1 n\u01b0\u1edbc, v\u1ec7t canxi.<br \/>\n&#8211; Ngo\u00e0i tr\u1eddi \u0111\u00f4 th\u1ecb (H\u00e0 N\u1ed9i): SOx\/NOx, b\u1ee5i m\u1ecbn, m\u01b0a axit g\u00e2y \u201ctea-staining\u201d.<br \/>\n&#8211; Ven bi\u1ec3n: Clo trong s\u01b0\u01a1ng mu\u1ed1i l\u00e0m n\u00e2u \u0111\u1ecf b\u1ec1 m\u1eb7t (nh\u1ea5t l\u00e0 201\/304 kh\u00f4ng passivate\/electropolish).<\/p>\n<h2 id=\"toc-1-nguyen-tac-vang-khi-bao-duong-inox\">Nguy\u00ean t\u1eafc v\u00e0ng khi b\u1ea3o d\u01b0\u1ee1ng inox<\/h2>\n<p>&#8211; Kh\u00f4ng d\u00f9ng h\u00f3a ch\u1ea5t ch\u1ee9a Clo (Javen\/NaClO, HCl), ch\u1ea5t t\u1ea9y g\u1ec9 th\u00e9p carbon, b\u00e0n ch\u1ea3i th\u00e9p; tr\u00e1nh l\u1eabn b\u1ee5i s\u1eaft.<br \/>\n&#8211; \u01afu ti\u00ean ch\u1ea5t t\u1ea9y trung t\u00ednh (pH 6\u20138), dung d\u1ecbch citric\/oxalic lo\u00e3ng \u0111\u1ec3 kh\u1eed \u1ed1 nh\u1eb9; tr\u00e1ng l\u1ea1i b\u1eb1ng n\u01b0\u1edbc \u00edt kho\u00e1ng\/DI v\u00e0 lau kh\u00f4 microfiber.<br \/>\n&#8211; Th\u1eed tr\u00ean m\u1eabu\/ti\u1ebfp gi\u00e1p khu\u1ea5t tr\u01b0\u1edbc khi \u00e1p d\u1ee5ng to\u00e0n di\u1ec7n.<br \/>\n&#8211; Lu\u00f4n \u0111i theo h\u01b0\u1edbng h\u1ea1t v\u1edbi b\u1ec1 m\u1eb7t x\u01b0\u1edbc; c\u1ed1 \u0111\u1ecbnh t\u1ed1c \u0111\u1ed9, \u00e1p l\u1ef1c, v\u00e0 d\u00f9ng \u0111\u1ebf l\u01b0ng c\u1ee9ng khi ch\u00e0 nh\u00e1m.<br \/>\n&#8211; Sau s\u1eeda ch\u1eefa c\u01a1 h\u1ecdc n\u00ean passivate (citric) \u0111\u1ec3 ph\u1ee5c h\u1ed3i l\u1edbp th\u1ee5 \u0111\u1ed9ng.<br \/>\n&#8211; V\u1edbi phun bi\/phun c\u00e1t: tr\u00e1nh \u201cv\u00e1 c\u1ee5c b\u1ed9\u201d; l\u00e0m l\u1ea1i to\u00e0n v\u00f9ng \u0111\u1ec3 \u0111\u1ed3ng nh\u1ea5t.<\/p>\n<h2 id=\"toc-2-lich-bao-tri-goi-y-theo-ung-dung\">L\u1ecbch b\u1ea3o tr\u00ec g\u1ee3i \u00fd theo \u1ee9ng d\u1ee5ng<\/h2>\n<p>&#8211; B\u1ebfp c\u00f4ng nghi\u1ec7p, thang m\u00e1y n\u1ed9i th\u1ea5t: lau 1\u20133 l\u1ea7n\/tu\u1ea7n b\u1eb1ng dung d\u1ecbch trung t\u00ednh; x\u1eed l\u00fd \u1ed1 n\u01b0\u1edbc h\u00e0ng th\u00e1ng; \u0111\u00e1nh b\u00f3ng tinh g\u01b0\u01a1ng 3\u20136 th\u00e1ng\/l\u1ea7n (n\u1ebfu c\u1ea7n).<br \/>\n&#8211; Ngo\u00e0i tr\u1eddi H\u00e0 N\u1ed9i: r\u1eeda n\u01b0\u1edbc s\u1ea1ch + x\u00e0 ph\u00f2ng trung t\u00ednh 1\u20132 th\u00e1ng\/l\u1ea7n; kh\u1eed \u201ctea-staining\u201d khi xu\u1ea5t hi\u1ec7n; ph\u1ee7 ch\u1ed1ng b\u00e1m v\u00e2n tay\/nano 6\u201312 th\u00e1ng\/l\u1ea7n.<br \/>\n&#8211; Ven bi\u1ec3n (Qu\u1ea3ng Ninh, H\u1ea3i Ph\u00f2ng): ch\u1ecdn 316\/316L, r\u1eeda ng\u1ecdt h\u00e0ng tu\u1ea7n; passivation \u0111\u1ecbnh k\u1ef3 6\u201312 th\u00e1ng; c\u00e2n nh\u1eafc electropolish ho\u1eb7c coating b\u1ec1n UV.<\/p>\n<h2 id=\"toc-3-quy-trinh-chuan-cho-tung-loai-be-mat\">Quy tr\u00ecnh chu\u1ea9n cho t\u1eebng lo\u1ea1i b\u1ec1 m\u1eb7t<\/h2>\n<h3>B\u1ec1 m\u1eb7t g\u01b0\u01a1ng (BA\/No.8): l\u00e0m s\u1ea1ch v\u00e0 ph\u1ee5c h\u1ed3i ph\u1ea3n chi\u1ebfu<\/h3>\n<p>1) L\u00e0m s\u1ea1ch s\u01a1 b\u1ed9<br \/>\n&#8211; D\u1ee5ng c\u1ee5: kh\u0103n microfiber, b\u1ecdt bi\u1ec3n m\u1ec1m, b\u00ecnh x\u1ecbt n\u01b0\u1edbc DI\/RO, ch\u1ea5t t\u1ea9y trung t\u00ednh kh\u00f4ng m\u00e0i m\u00f2n.<br \/>\n&#8211; Quy tr\u00ecnh: x\u1ecbt \u01b0\u1edbt \u2013 lau \u2013 tr\u00e1ng n\u01b0\u1edbc \u2013 lau kh\u00f4. V\u1ebft \u1ed1 kho\u00e1ng: \u0111\u1eafp gel citric 5\u201310% ho\u1eb7c b\u1ed9t oxalic nh\u1eb9 (v\u00ed d\u1ee5 Bar Keepers Friend) 2\u20135 ph\u00fat, ch\u00e0 b\u1eb1ng pad m\u00fat m\u1ec1m, tr\u00e1ng nhi\u1ec1u n\u01b0\u1edbc, lau kh\u00f4.<\/p>\n<p>2) X\u1eed l\u00fd xo\u00e1y nh\u1eb9\/v\u1ebft m\u1edd<br \/>\n&#8211; D\u00f9ng h\u1ee3p ch\u1ea5t \u0111\u00e1nh b\u00f3ng si\u00eau m\u1ecbn (finishing compound) v\u1edbi m\u00e1y \u0111\u00e1nh b\u00f3ng qu\u1ef9 \u0111\u1ea1o k\u00e9p (DA) + pad foam m\u1ec1m.<br \/>\n&#8211; T\u1ed1c \u0111\u1ed9 th\u1ea5p\u2013trung b\u00ecnh, \u00e1p l\u1ef1c nh\u1eb9, h\u00e0nh tr\u00ecnh ch\u1ed3ng l\u1ea5n 50%. Ki\u1ec3m tra d\u01b0\u1edbi \u00e1nh s\u00e1ng xi\u00ean. L\u1eb7p t\u1ed1i \u0111a 2\u20133 pass.<\/p>\n<p>3) X\u00f3a x\u01b0\u1edbc n\u00f4ng \u2013 s\u00e2u c\u00f3 ki\u1ec3m so\u00e1t<br \/>\n&#8211; Che ch\u1eafn vi\u1ec1n b\u1eb1ng b\u0103ng keo, v\u1ec7 sinh s\u1ea1ch b\u1ee5i m\u00e0i.<br \/>\n&#8211; M\u00e0i tu\u1ea7n t\u1ef1 \u01b0\u1edbt ho\u1eb7c kh\u00f4 c\u00f3 ki\u1ec3m so\u00e1t nhi\u1ec7t, lu\u00f4n d\u00f9ng \u0111\u1ebf l\u01b0ng ph\u1eb3ng:<br \/>\n  &#8211; X\u01b0\u1edbc n\u00f4ng: P1500 \u2192 P2000 \u2192 P3000 phim m\u00e0i.<br \/>\n  &#8211; X\u01b0\u1edbc s\u00e2u: P600 \u2192 P800 \u2192 P1200 \u2192 P1500 \u2192 P2000 \u2192 P3000.<br \/>\n&#8211; \u0110\u00e1nh b\u00f3ng nhi\u1ec1u b\u01b0\u1edbc:<br \/>\n  &#8211; C\u1eaft: b\u00e1nh n\u1ec9 + compound \u201ccut\u201d (g\u1ed1c alumina\/diamond).<br \/>\n  &#8211; Ho\u00e0n thi\u1ec7n: pad foam + compound \u0111\u00e1nh b\u00f3ng tinh (g\u1ed1c chromium oxide).<br \/>\n&#8211; L\u00e0m s\u1ea1ch b\u1eb1ng IPA 70% gi\u1eefa c\u00e1c b\u01b0\u1edbc; gi\u1eef nhi\u1ec7t b\u1ec1 m\u1eb7t <50\u00b0C \u0111\u1ec3 tr\u00e1nh bi\u1ebfn m\u00e0u.\n\n4) Sau h\u00e0n\/tempering m\u00e0u\n- \u01afu ti\u00ean lo\u1ea1i b\u1ecf c\u01a1 h\u1ecdc v\u1ebft nhi\u1ec7t (m\u00e0i d\u1ea3i m\u00e0u \u0111\u1ebfn n\u1ec1n s\u00e1ng), sau \u0111\u00f3 passivate b\u1eb1ng citric.\n- N\u1ebfu ph\u1ea3i t\u1ea9y g\u1ec9\/pickling gel HNO3+HF: ch\u1ec9 do th\u1ee3 \u0111\u01b0\u1ee3c \u0111\u00e0o t\u1ea1o, ki\u1ec3m so\u00e1t PPE, trung h\u00f2a, x\u1eed l\u00fd th\u1ea3i \u0111\u00fang quy \u0111\u1ecbnh; thay th\u1ebf an to\u00e0n l\u00e0 citric c\u00f3 th\u1eddi gian l\u01b0u d\u00e0i h\u01a1n.\n- Passivation (theo ASTM A967): dung d\u1ecbch citric 4\u201310% \u1edf 25\u201360\u00b0C, 20\u201330 ph\u00fat; tr\u00e1ng n\u01b0\u1edbc DI, s\u1ea5y kh\u00f4.\n\nSai l\u1ea7m th\u01b0\u1eddng g\u1eb7p c\u1ea7n tr\u00e1nh\n- D\u00f9ng b\u1ed9t m\u00e0i\/g\u1ed1i c\u01b0\u1edbc l\u00e0m m\u1edd g\u01b0\u01a1ng v\u0129nh vi\u1ec5n.\n- B\u1ecf qua b\u01b0\u1edbc passivate sau m\u00e0i: d\u1ec5 \u201ctea-staining\u201d.\n- Lau kh\u00f4 k\u00e9m: \u0111\u1ec3 l\u1ea1i v\u00f2ng \u1ed1 tr\u1eafng.\n\n\n\n<h3>B\u1ec1 m\u1eb7t x\u01b0\u1edbc (No.4, HL): gi\u1eef \u0111\u00fang h\u01b0\u1edbng h\u1ea1t v\u00e0 \u0111\u1ed9 m\u1ecbn<\/h3>\n<p>X\u00e1c \u0111\u1ecbnh ho\u00e0n thi\u1ec7n ban \u0111\u1ea7u<br \/>\n&#8211; No.4 Satin: th\u01b0\u1eddng 180\u2013240 grit, \u00e1nh m\u1edd \u0111\u1ec1u.<br \/>\n&#8211; Hairline (HL): 320\u2013400 grit, x\u01b0\u1edbc d\u00e0i, h\u1eb9p, \u201cs\u1ee3i t\u00f3c\u201d.<br \/>\n&#8211; \u0110o ho\u1eb7c so m\u1eabu chu\u1ea9n tr\u01b0\u1edbc khi s\u1eeda.<\/p>\n<p>Quy tr\u00ecnh s\u1eeda c\u1ee5c b\u1ed9 c\u00f3 ki\u1ec3m so\u00e1t<br \/>\n&#8211; B\u01b0\u1edbc 1 \u2013 L\u00e0m s\u1ea1ch\/ph\u1ee7 b\u0103ng keo m\u00e9p.<br \/>\n&#8211; B\u01b0\u1edbc 2 \u2013 C\u00e2n b\u1eb1ng v\u1ebft x\u01b0\u1edbc:<br \/>\n  &#8211; D\u00f9ng m\u00e1y ch\u00e0 tuy\u1ebfn t\u00ednh\/burnishing ho\u1eb7c \u0111\u1ebf tay d\u00e0i, lu\u00f4n theo h\u01b0\u1edbng h\u1ea1t.<br \/>\n  &#8211; B\u1eaft \u0111\u1ea7u b\u1eb1ng grit t\u01b0\u01a1ng \u0111\u01b0\u01a1ng ho\u1eb7c th\u1ea5p h\u01a1n 1 c\u1ea5p so v\u1edbi n\u1ec1n:<br \/>\n    &#8211; No.4: 180 \u2192 240 \u2192 nonwoven A-MED\/A-VF.<br \/>\n    &#8211; HL: 320 \u2192 400 \u2192 finishing nonwoven S-VF.<br \/>\n  &#8211; T\u1ea1o ch\u1ed3ng l\u1ea5n \u0111\u1ec1u, gi\u1eef t\u1ed1c \u0111\u1ed9 2.000\u20134.000 sfpm (m\u00e1y tay) \u0111\u1ec3 kh\u00f4ng \u201cch\u00e1y\u201d v\u00e2n.<br \/>\n&#8211; B\u01b0\u1edbc 3 \u2013 H\u00f2a tr\u1ed9n v\u00f9ng s\u1eeda:<br \/>\n  &#8211; M\u1edf r\u1ed9ng v\u00f9ng 30\u201350 mm quanh \u0111i\u1ec3m s\u1eeda b\u1eb1ng pad nonwoven \u0111\u1ec3 \u0111\u1ed3ng \u0111\u1ec1u \u0111\u1ed9 b\u00f3ng.<br \/>\n  &#8211; Lau s\u1ea1ch b\u1ee5i m\u00e0i b\u1eb1ng kh\u0103n kh\u00f4ng s\u1ee3i + IPA.<\/p>\n<p>M\u1eb9o th\u1ef1c h\u00e0nh<br \/>\n&#8211; D\u00f9ng th\u01b0\u1edbc d\u1eabn\/h\u01b0\u1edbng d\u1eabn th\u1eb3ng \u0111\u1ec3 gi\u1eef \u0111\u01b0\u1eddng h\u1ea1t kh\u00f4ng \u201cl\u1eafc\u201d.<br \/>\n&#8211; V\u1edbi \u1ed1ng\/h\u1ed9p, d\u00f9ng b\u00e1nh n\u1ec9\/burnishing c\u00f3 b\u1ec7 \u0111\u1ee1 cong.<br \/>\n&#8211; N\u1ebfu v\u1ebft x\u01b0\u1edbc c\u1eaft ngang h\u1ea1t qu\u00e1 s\u00e2u: c\u00e2n nh\u1eafc t\u00e1i ho\u00e0n thi\u1ec7n to\u00e0n t\u1ea5m ho\u1eb7c chuy\u1ec3n sang ho\u00e0n thi\u1ec7n h\u1ea1t m\u1ecbn h\u01a1n \u0111\u1ec3 \u201cnu\u1ed1t\u201d khuy\u1ebft.<\/p>\n<h3>B\u1ec1 m\u1eb7t m\u1edd (2B, bead-blast\/phun bi): l\u00e0m s\u1ea1ch v\u00e0 t\u00e1i ho\u00e0n thi\u1ec7n<\/h3>\n<p>2B c\u00e1n ngu\u1ed9i<br \/>\n&#8211; L\u00e0m s\u1ea1ch: dung d\u1ecbch trung t\u00ednh, pad vi s\u1ee3i; kh\u1eed \u1ed1 kho\u00e1ng b\u1eb1ng citric\/oxalic nh\u1eb9.<br \/>\n&#8211; X\u01b0\u1edbc nh\u1eb9: c\u00f3 th\u1ec3 \u201cl\u00ec\u201d l\u1ea1i b\u1eb1ng pad nonwoven r\u1ea5t m\u1ecbn (S-VF) theo \u0111\u01b0\u1eddng c\u00e1n. R\u1ee7i ro thay \u0111\u1ed5i \u00e1nh m\u1edd; n\u00ean th\u1eed ch\u1ed7 khu\u1ea5t. V\u1edbi x\u01b0\u1edbc th\u1ea5y r\u00f5, gi\u1ea3i ph\u00e1p th\u1ea9m m\u1ef9 th\u01b0\u1eddng l\u00e0 t\u00e1i \u0111\u00e1nh No.4 to\u00e0n t\u1ea5m.<\/p>\n<p>Bead-blast\/phun bi<br \/>\n&#8211; Kh\u00f4ng th\u1ec3 \u201cv\u00e1\u201d c\u1ee5c b\u1ed9 m\u00e0 kh\u00f4ng l\u1ed9 vi\u1ec1n. Gi\u1ea3i ph\u00e1p: che ch\u1eafn, phun l\u1ea1i to\u00e0n v\u00f9ng b\u1ec1 m\u1eb7t v\u1edbi c\u00f9ng c\u1ee1 h\u1ea1t (k\u00ednh\/ceramic) v\u00e0 \u00e1p l\u1ef1c.<br \/>\n  &#8211; Tham s\u1ed1 tham kh\u1ea3o: h\u1ea1t k\u00ednh 80\u2013120 mesh, \u00e1p 3.5\u20135.5 bar, kho\u1ea3ng c\u00e1ch 200\u2013300 mm, g\u00f3c 60\u201390\u00b0, h\u00e0nh tr\u00ecnh ch\u1ed3ng l\u1ea5n 50%.<br \/>\n&#8211; Sau phun: r\u1eeda k\u1ef9, s\u1ea5y kh\u00f4, passivation citric \u0111\u1ec3 ph\u1ee5c h\u1ed3i l\u1edbp th\u1ee5 \u0111\u1ed9ng.<\/p>\n<h2 id=\"toc-4-xu-ly-o-vangtea-staining-va-ri-be-mat\">X\u1eed l\u00fd \u1ed1 v\u00e0ng\/\u201ctea-staining\u201d v\u00e0 r\u1ec9 b\u1ec1 m\u1eb7t<\/h2>\n<p>Nguy\u00ean nh\u00e2n<br \/>\n&#8211; Mu\u1ed1i Clo, m\u01b0a axit, h\u1ea1t s\u1eaft ngo\u1ea1i lai, b\u1ec1 m\u1eb7t th\u00f4 (Ra cao) gi\u1eef \u1ea9m.<\/p>\n<p>C\u00e1ch x\u1eed l\u00fd ti\u00eau chu\u1ea9n<br \/>\n&#8211; B\u01b0\u1edbc 1: R\u1eeda \u01b0\u1edbt + ch\u1ea5t t\u1ea9y trung t\u00ednh, lo\u1ea1i d\u1ea7u\/m\u1ed3 h\u00f4i.<br \/>\n&#8211; B\u01b0\u1edbc 2: \u0110\u1eafp gel citric 6\u201310% ho\u1eb7c oxalic 3\u20135% trong 10\u201320 ph\u00fat; ch\u00e0 nylon m\u1ec1m.<br \/>\n&#8211; B\u01b0\u1edbc 3: Tr\u00e1ng n\u01b0\u1edbc DI; ki\u1ec3m tra. V\u1edbi \u201ctea-staining\u201d n\u1eb7ng, l\u1eb7p l\u1ea1i ho\u1eb7c chuy\u1ec3n c\u01a1 h\u1ecdc nh\u1eb9 \u0111\u1ec3 lo\u1ea1i l\u1edbp \u00f4 nhi\u1ec5m b\u00e1m ch\u1eb7t.<br \/>\n&#8211; B\u01b0\u1edbc 4: Passivation citric theo ASTM A967; s\u1ea5y kh\u00f4 ho\u00e0n to\u00e0n.<br \/>\n&#8211; B\u01b0\u1edbc 5: Ph\u1ee7 b\u1ea3o v\u1ec7 (anti-fingerprint\/nano) n\u1ebfu v\u1ecb tr\u00ed nhi\u1ec1u tay ch\u1ea1m ho\u1eb7c ngo\u00e0i tr\u1eddi.<\/p>\n<p>L\u01b0u \u00fd: N\u1ebfu xu\u1ea5t hi\u1ec7n bong r\u1ec9 \u0111\u1ecf lan r\u1ed9ng c\u00f3 th\u1ec3 do l\u1eabn h\u1ea1t s\u1eaft ho\u1eb7c ch\u1ecdn sai m\u00e1c inox cho m\u00f4i tr\u01b0\u1eddng; c\u1ea7n \u0111\u00e1nh gi\u00e1 l\u1ea1i v\u1eadt li\u1ec7u (\u01b0u ti\u00ean 316\/316L cho h\u01a1i mu\u1ed1i) ho\u1eb7c electropolish.<\/p>\n<h2 id=\"toc-5-bao-ve-sau-phuc-hoi-lop-phu-va-lua-chon-vat-lieu\">B\u1ea3o v\u1ec7 sau ph\u1ee5c h\u1ed3i: l\u1edbp ph\u1ee7 v\u00e0 l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u<\/h2>\n<p>&#8211; L\u1edbp ph\u1ee7 ch\u1ed1ng v\u00e2n tay (AFP): m\u00e0ng h\u1eefu c\u01a1 m\u1ecfng, gi\u1ea3m b\u00e1m b\u1ea9n, d\u1ec5 lau. Ph\u00f9 h\u1ee3p thang m\u00e1y, n\u1ed9i th\u1ea5t.<br \/>\n&#8211; Nano SiO2\/ceramic: t\u0103ng ch\u1ed1ng b\u00e1m n\u01b0\u1edbc\/\u00f4 nhi\u1ec5m; ch\u1ecdn lo\u1ea1i ch\u1ecbu UV cho ngo\u00e0i tr\u1eddi.<br \/>\n&#8211; S\u00e1p vi s\u1ee3i (microcrystalline wax): gi\u1ea3i ph\u00e1p kinh t\u1ebf trong nh\u00e0; c\u1ea7n t\u00e1i ph\u1ee7 \u0111\u1ecbnh k\u1ef3.<br \/>\n&#8211; Electropolishing: t\u1ed1i \u01b0u ch\u1ed1ng \u0103n m\u00f2n ngo\u00e0i tr\u1eddi, ven bi\u1ec3n.<br \/>\n&#8211; V\u1eadt li\u1ec7u: khu v\u1ef1c \u1ea9m mu\u1ed1i\/axit \u2013 d\u00f9ng 316\/316L thay 201\/304; v\u1edbi h\u1ed3 b\u01a1i (Cl-) c\u1ea7n \u0111\u00e1nh gi\u00e1 k\u1ef9 ho\u1eb7c d\u00f9ng duplex.<\/p>\n<h2 id=\"toc-6-vat-tu-va-dung-cu-de-xuat-cho-xuongdoi-thi-cong\">V\u1eadt t\u01b0 v\u00e0 d\u1ee5ng c\u1ee5 \u0111\u1ec1 xu\u1ea5t cho x\u01b0\u1edfng\/\u0111\u1ed9i thi c\u00f4ng<\/h2>\n<p>&#8211; L\u00e0m s\u1ea1ch: kh\u0103n microfiber, x\u00e0 ph\u00f2ng pH trung t\u00ednh, n\u01b0\u1edbc RO\/DI, IPA 70%, gel citric\/oxalic nh\u1eb9.<br \/>\n&#8211; M\u00e0i \u2013 \u0111\u00e1nh b\u00f3ng:<br \/>\n  &#8211; Phim m\u00e0i P600\u2013P3000; nonwoven A-MED\/A-VF\/S-VF; b\u00e1nh n\u1ec9; pad foam.<br \/>\n  &#8211; M\u00e1y: qu\u1ef9 \u0111\u1ea1o k\u00e9p (DA) 5\u20138 mm, m\u00e1y ch\u00e0 tuy\u1ebfn t\u00ednh\/burnishing, m\u00e1y m\u00e0i t\u1ed1c \u0111\u1ed9 bi\u1ebfn thi\u00ean.<br \/>\n  &#8211; H\u1ee3p ch\u1ea5t: compound c\u1eaft (alumina\/diamond), compound ho\u00e0n thi\u1ec7n (chromium oxide).<br \/>\n&#8211; Phun bi: bu\u1ed3ng k\u00edn, h\u1ea1t k\u00ednh 80\u2013120 mesh, m\u00e1y n\u00e9n \u1ed5n \u00e1p, thi\u1ebft b\u1ecb h\u00fat b\u1ee5i.<br \/>\n&#8211; Passivation: dung d\u1ecbch citric c\u00f4ng nghi\u1ec7p, b\u1ed3n\/khay ng\u00e2m ho\u1eb7c gel b\u00f4i; gi\u1ea5y qu\u1ef3\/pH \u0111\u1ec3 ki\u1ec3m tra trung h\u00f2a sau x\u1eed l\u00fd.<br \/>\n&#8211; PPE: g\u0103ng nitrile, k\u00ednh che m\u1eb7t, kh\u1ea9u trang l\u1ecdc b\u1ee5i m\u1ecbn\/axit, t\u1ea1p d\u1ec1 ch\u1ed1ng h\u00f3a ch\u1ea5t, th\u00f4ng gi\u00f3 c\u1ee5c b\u1ed9.<\/p>\n<h2 id=\"toc-7-an-toan-hoa-chat-va-moi-truong\">An to\u00e0n h\u00f3a ch\u1ea5t v\u00e0 m\u00f4i tr\u01b0\u1eddng<\/h2>\n<p>&#8211; Tr\u00e1nh d\u00f9ng HCl, NaClO. Ch\u1ec9 s\u1eed d\u1ee5ng gel pickling c\u00f3 HF khi b\u1eaft bu\u1ed9c v\u00e0 b\u1edfi nh\u00e2n s\u1ef1 \u0111\u01b0\u1ee3c \u0111\u00e0o t\u1ea1o, trang b\u1ecb PPE \u0111\u1ea7y \u0111\u1ee7; c\u00f4 l\u1eadp khu v\u1ef1c thi c\u00f4ng.<br \/>\n&#8211; \u01afu ti\u00ean passivation citric theo ASTM A967 v\u00ec an to\u00e0n h\u01a1n HF\/HNO3 v\u00e0 th\u00e2n thi\u1ec7n m\u00f4i tr\u01b0\u1eddng h\u01a1n.<br \/>\n&#8211; Trung h\u00f2a, thu gom, x\u1eed l\u00fd n\u01b0\u1edbc th\u1ea3i theo quy \u0111\u1ecbnh hi\u1ec7n h\u00e0nh; kh\u00f4ng x\u1ea3 tr\u1ef1c ti\u1ebfp ra c\u1ed1ng tho\u00e1t.<\/p>\n<h2 id=\"toc-8-cac-loi-pho-bien-va-cach-tranh\">C\u00e1c l\u1ed7i ph\u1ed5 bi\u1ebfn v\u00e0 c\u00e1ch tr\u00e1nh<\/h2>\n<p>&#8211; D\u00f9ng mi\u1ebfng c\u1ecd th\u00e9p: g\u00e2y nhi\u1ec5m s\u1eaft v\u00e0 r\u1ec9 n\u00e2u nhanh ch\u00f3ng. Thay b\u1eb1ng nylon\/nonwoven.<br \/>\n&#8211; T\u1ea9y \u1ed1 b\u1eb1ng dung d\u1ecbch ch\u1ee9a Clo: \u0111\u1ec3 l\u1ea1i v\u1ebft x\u1ec9n, r\u1ed7. Thay b\u1eb1ng citric\/oxalic nh\u1eb9.<br \/>\n&#8211; \u0110\u00e1nh x\u01b0\u1edbc ng\u01b0\u1ee3c h\u1ea1t: t\u1ea1o \u201cm\u1eaft c\u00e1\u201d. Lu\u00f4n d\u00f2 h\u01b0\u1edbng h\u1ea1t tr\u01b0\u1edbc.<br \/>\n&#8211; \u0110\u00e1nh b\u00f3ng g\u01b0\u01a1ng qu\u00e1 n\u00f3ng: g\u00e2y bi\u1ebfn m\u00e0u. Ki\u1ec3m so\u00e1t t\u1ed1c \u0111\u1ed9, \u00e1p l\u1ef1c v\u00e0 l\u00e0m m\u00e1t.<br \/>\n&#8211; S\u1eeda c\u1ee5c b\u1ed9 b\u1ec1 m\u1eb7t phun bi: lu\u00f4n \u0111\u1ec3 l\u1ed9 \u201cvi\u1ec1n v\u00e1\u201d. C\u1ea7n phun l\u1ea1i to\u00e0n v\u00f9ng.<\/p>\n<h2 id=\"toc-9-truong-hop-dien-hinh-va-thoi-luong-tham-khao\">Tr\u01b0\u1eddng h\u1ee3p \u0111i\u1ec3n h\u00ecnh v\u00e0 th\u1eddi l\u01b0\u1ee3ng tham kh\u1ea3o<\/h2>\n<p>&#8211; T\u1ea5m inox g\u01b0\u01a1ng 1 m\u00b2 b\u1ecb xo\u00e1y lau: 1\u20132 gi\u1edd v\u1edbi DA + compound tinh, kh\u00f4ng m\u00e0i nh\u00e1m.<br \/>\n&#8211; Tay v\u1ecbn No.4 tr\u1ea7y 30 cm: 30\u201360 ph\u00fat v\u1edbi burnishing 180\u2192240 + nonwoven VF.<br \/>\n&#8211; T\u1ee7 2B c\u00f3 x\u01b0\u1edbc khu tr\u00fa: 0.5\u20131.5 gi\u1edd; n\u1ebfu kh\u00f4ng \u0111\u1ed3ng m\u00e0u, c\u00e2n nh\u1eafc chuy\u1ec3n No.4 to\u00e0n c\u00e1nh.<br \/>\n&#8211; V\u00e1ch phun bi 2 m\u00b2 c\u00f3 \u1ed1 v\u00e0 x\u01b0\u1edbc: 0.5\u20131 gi\u1edd l\u00e0m s\u1ea1ch; 1\u20132 gi\u1edd phun l\u1ea1i v\u00e0 passivation.<\/p>\n<h2 id=\"toc-10-tai-lieu-tham-khao\">T\u00e0i li\u1ec7u tham kh\u1ea3o<\/h2>\n<p>&#8211; ASTM A380 \u2013 Cleaning, Descaling, and Passivation of Stainless Steel Parts.<br \/>\n&#8211; ASTM A967 \u2013 Chemical Passivation Treatments for Stainless Steel Parts.<br \/>\n&#8211; EN 10088 \u2013 Stainless steels (m\u00f4 t\u1ea3 ho\u00e0n thi\u1ec7n b\u1ec1 m\u1eb7t).<br \/>\n&#8211; Nickel Institute \u2013 Care and Maintenance of Stainless Steel; Cleaning and Descaling Stainless Steels.<br \/>\n&#8211; ASSDA (Australian Stainless Steel Development Association) \u2013 Tea staining: causes, prevention and cure.<br \/>\n&#8211; 3M Metal Finishing Guide \u2013 Stainless steel finishing sequences.<\/p>\n<h2 id=\"toc-11-ket-luan\">K\u1ebft lu\u1eadn<\/h2>\n<p>&#8211; B\u1ec1 m\u1eb7t g\u01b0\u01a1ng y\u00eau c\u1ea7u l\u00e0m s\u1ea1ch kh\u00f4ng m\u00e0i m\u00f2n, ki\u1ec3m so\u00e1t nhi\u1ec7t v\u00e0 chu\u1ed7i m\u00e0i\u2013\u0111\u00e1nh b\u00f3ng tinh; m\u1ecdi can thi\u1ec7p c\u01a1 h\u1ecdc ph\u1ea3i \u0111i theo c\u1ea5p h\u1ea1t t\u0103ng d\u1ea7n v\u00e0 k\u1ebft th\u00fac b\u1eb1ng passivation.<br \/>\n&#8211; B\u1ec1 m\u1eb7t x\u01b0\u1edbc s\u1ed1ng c\u00f2n \u1edf vi\u1ec7c gi\u1eef \u0111\u00fang h\u01b0\u1edbng v\u00e0 \u0111\u1ed9 m\u1ecbn h\u1ea1t; s\u1eeda c\u1ee5c b\u1ed9 c\u1ea7n h\u00f2a tr\u1ed9n kh\u00e9o \u0111\u1ec3 \u0111\u1ed3ng nh\u1ea5t \u00e1nh m\u1edd.<br \/>\n&#8211; B\u1ec1 m\u1eb7t m\u1edd 2B cho ph\u00e9p ch\u1ec9nh nh\u1eb9, c\u00f2n bead-blast g\u1ea7n nh\u01b0 bu\u1ed9c x\u1eed l\u00fd l\u1ea1i to\u00e0n v\u00f9ng \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o \u0111\u1ed3ng \u0111\u1ec1u.<br \/>\n&#8211; \u1ed0 v\u00e0ng\/tea-staining x\u1eed l\u00fd hi\u1ec7u qu\u1ea3 b\u1eb1ng citric\/oxalic v\u00e0 passivation; tr\u00e1nh tuy\u1ec7t \u0111\u1ed1i h\u00f3a ch\u1ea5t ch\u1ee9a Clo.<br \/>\n&#8211; L\u1edbp ph\u1ee7 b\u1ea3o v\u1ec7 v\u00e0 l\u1ecbch b\u1ea3o tr\u00ec ph\u00f9 h\u1ee3p m\u00f4i tr\u01b0\u1eddng (\u0111\u1eb7c bi\u1ec7t ngo\u00e0i tr\u1eddi\/ven bi\u1ec3n) quy\u1ebft \u0111\u1ecbnh tu\u1ed5i th\u1ecd th\u1ea9m m\u1ef9 v\u00e0 ch\u1ed1ng \u0103n m\u00f2n.<\/p>\n<p>C\u1ea7n t\u01b0 v\u1ea5n ch\u1ecdn quy tr\u00ecnh, v\u1eadt t\u01b0, ho\u1eb7c d\u1ecbch v\u1ee5 ph\u1ee5c h\u1ed3i t\u1ea1i c\u00f4ng tr\u00ecnh? Li\u00ean h\u1ec7 Inox C\u01b0\u1eddng Th\u1ecbnh \u0111\u1ec3 \u0111\u01b0\u1ee3c k\u1ef9 s\u01b0 c\u1ee7a ch\u00fang t\u00f4i kh\u1ea3o s\u00e1t v\u00e0 \u0111\u1ec1 xu\u1ea5t gi\u1ea3i ph\u00e1p t\u1ed1i \u01b0u, gi\u00e1 t\u1ed1t. Hotline: 0343.417.281. Email: inoxcongnghiep.cuongthinh@gmail.com<\/p>\n","protected":false},"excerpt":{"rendered":"<p>H\u01b0\u1edbng d\u1eabn chi ti\u1ebft v\u1ec7 sinh, kh\u1eed \u1ed1, \u0111\u00e1nh b\u00f3ng v\u00e0 ph\u1ee5c h\u1ed3i inox g\u01b0\u01a1ng, x\u01b0\u1edbc, m\u1edd theo ti\u00eau chu\u1ea9n ASTM\/EN; quy tr\u00ecnh, v\u1eadt t\u01b0, tr\u00e1nh l\u1ed7i v\u00e0 an to\u00e0n h\u00f3a ch\u1ea5t.<\/p>\n","protected":false},"author":7,"featured_media":1027,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[23],"tags":[],"class_list":["post-1874","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\/1874","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=1874"}],"version-history":[{"count":0,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/posts\/1874\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/media\/1027"}],"wp:attachment":[{"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/media?parent=1874"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/categories?post=1874"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/tags?post=1874"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}