{"id":1867,"date":"2026-04-05T12:35:49","date_gmt":"2026-04-05T05:35:49","guid":{"rendered":"https:\/\/inoxcuongthinh.com\/phun-cat-phun-bi-inox-be-mat-mo-dong-nhat-va-ung-dung\/"},"modified":"2026-04-05T12:35:49","modified_gmt":"2026-04-05T05:35:49","slug":"phun-cat-phun-bi-inox-be-mat-mo-dong-nhat-va-ung-dung","status":"publish","type":"post","link":"https:\/\/inoxcuongthinh.com\/phun-cat-phun-bi-inox-be-mat-mo-dong-nhat-va-ung-dung\/","title":{"rendered":"Phun c\u00e1t, phun bi Inox: b\u1ec1 m\u1eb7t m\u1edd \u0111\u1ed3ng nh\u1ea5t v\u00e0 \u1ee9ng d\u1ee5ng"},"content":{"rendered":"<div class=\"custom-toc\">\n<h3>N\u1ed9i dung ch\u00ednh<\/h3>\n<ul>\n<li><a href=\"#toc-0-phan-biet-phun-cat-va-phun-bi-tren-inox\">Ph\u00e2n bi\u1ec7t phun c\u00e1t v\u00e0 phun bi tr\u00ean Inox<\/a><\/li>\n<li><a href=\"#toc-1-chon-vat-lieu-hat-anh-huong-truc-tiep-den-do-mo-va\">Ch\u1ecdn v\u1eadt li\u1ec7u h\u1ea1t: \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn \u0111\u1ed9 m\u1edd v\u00e0 s\u1ea1ch g\u1ec9<\/a><\/li>\n<li><a href=\"#toc-2-thong-so-cong-nghe-quyet-dinh-do-mo-dong-nhat\">Th\u00f4ng s\u1ed1 c\u00f4ng ngh\u1ec7 quy\u1ebft \u0111\u1ecbnh \u201c\u0111\u1ed9 m\u1edd \u0111\u1ed3ng nh\u1ea5t\u201d<\/a><\/li>\n<li><a href=\"#toc-3-do-nham-muc-tieu-theo-ung-dung\">\u0110\u1ed9 nh\u00e1m m\u1ee5c ti\u00eau theo \u1ee9ng d\u1ee5ng<\/a><\/li>\n<li><a href=\"#toc-4-quy-trinh-8-buoc-de-dat-be-mat-mo-dong-nhat\">Quy tr\u00ecnh 8 b\u01b0\u1edbc \u0111\u1ec3 \u0111\u1ea1t b\u1ec1 m\u1eb7t m\u1edd \u0111\u1ed3ng nh\u1ea5t<\/a><\/li>\n<li><a href=\"#toc-5-ung-dung-dien-hinh-trong-cong-nghiep\">\u1ee8ng d\u1ee5ng \u0111i\u1ec3n h\u00ecnh trong c\u00f4ng nghi\u1ec7p<\/a><\/li>\n<li><a href=\"#toc-6-kiem-soat-rui-ro-va-loi-thuong-gap\">Ki\u1ec3m so\u00e1t r\u1ee7i ro v\u00e0 l\u1ed7i th\u01b0\u1eddng g\u1eb7p<\/a><\/li>\n<li><a href=\"#toc-7-so-sanh-nhanh-voi-cac-hoan-thien-inox-pho-bien\">So s\u00e1nh nhanh v\u1edbi c\u00e1c ho\u00e0n thi\u1ec7n Inox ph\u1ed5 bi\u1ebfn<\/a><\/li>\n<li><a href=\"#toc-8-lua-chon-he-thong-thiet-bi-cho-xuong-tai-ha-noi\">L\u1ef1a ch\u1ecdn h\u1ec7 th\u1ed1ng thi\u1ebft b\u1ecb cho x\u01b0\u1edfng t\u1ea1i H\u00e0 N\u1ed9i<\/a><\/li>\n<li><a href=\"#toc-9-vi-du-tham-khao-thong-so-thuc-te\">V\u00ed d\u1ee5 tham kh\u1ea3o th\u00f4ng s\u1ed1 th\u1ef1c t\u1ebf<\/a><\/li>\n<li><a href=\"#toc-10-cau-hoi-thuong-gap\">C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p<\/a><\/li>\n<li><a href=\"#toc-11-tieu-chuan-va-tai-lieu-tham-khao\">Ti\u00eau chu\u1ea9n v\u00e0 t\u00e0i li\u1ec7u tham kh\u1ea3o<\/a><\/li>\n<li><a href=\"#toc-12-ket-luan\">K\u1ebft lu\u1eadn<\/a><\/li>\n<\/ul>\n<\/div>\n<p>Trong ho\u00e0n thi\u1ec7n b\u1ec1 m\u1eb7t Inox, phun c\u00e1t v\u00e0 phun bi l\u00e0 hai k\u1ef9 thu\u1eadt t\u1ea1o l\u1edbp m\u1edd (satin\/matte) \u0111\u1ed3ng nh\u1ea5t, che khuy\u1ebft \u0111i\u1ec3m h\u00e0n, gi\u1ea3m ch\u00f3i v\u00e0 chu\u1ea9n b\u1ecb cho s\u01a1n\/ph\u1ee7. B\u00e0i vi\u1ebft n\u00e0y l\u00e0 h\u01b0\u1edbng d\u1eabn \u0111\u1ea7y \u0111\u1ee7: nguy\u00ean l\u00fd, v\u1eadt li\u1ec7u h\u1ea1t, th\u00f4ng s\u1ed1 c\u00f4ng ngh\u1ec7, quy tr\u00ecnh ki\u1ec3m so\u00e1t ch\u1ea5t l\u01b0\u1ee3ng, l\u1ed7i th\u01b0\u1eddng g\u1eb7p v\u00e0 \u1ee9ng d\u1ee5ng th\u1ef1c t\u1ebf trong s\u1ea3n xu\u1ea5t t\u1ea1i Vi\u1ec7t Nam.<\/p>\n<h2 id=\"toc-0-phan-biet-phun-cat-va-phun-bi-tren-inox\">Ph\u00e2n bi\u1ec7t phun c\u00e1t v\u00e0 phun bi tr\u00ean Inox<\/h2>\n<h3>Phun c\u00e1t (abrasive blasting)<\/h3>\n<p>&#8211; M\u1ee5c ti\u00eau ch\u00ednh: l\u00e0m s\u1ea1ch, t\u1ea1o nh\u00e1m\/\u0111\u1ed9 m\u1edd \u0111\u1ed3ng nh\u1ea5t, t\u1ea1o \u201cch\u00eca kh\u00f3a b\u00e1m d\u00ednh\u201d cho s\u01a1n\/ph\u1ee7.<br \/>\n&#8211; C\u01a1 ch\u1ebf: h\u1ea1t m\u00e0i c\u00f3 c\u1ea1nh s\u1eafc (aluminium oxide, garnet) ho\u1eb7c h\u1ea1t tr\u00f2n (glass\/ceramic bead) va \u0111\u1eadp b\u1ec1 m\u1eb7t, t\u1ea1o topography Ra x\u00e1c \u0111\u1ecbnh.<br \/>\n&#8211; Th\u00e0nh ph\u1ea9m th\u01b0\u1eddng g\u1ecdi \u201cglass bead finish\u201d ho\u1eb7c \u201csatin bead blasted\u201d khi d\u00f9ng bi th\u1ee7y tinh.<\/p>\n<h3>Phun bi (bead blasting vs. shot peening)<\/h3>\n<p>&#8211; Bead blasting: d\u00f9ng bi tr\u00f2n (th\u1ee7y tinh\/g\u1ed1m\/Inox) \u0111\u1ec3 t\u1ea1o m\u1edd \u0111\u1ed3ng \u0111\u1ec1u, \u00edt v\u1ebft x\u01b0\u1edbc \u0111\u1ecbnh h\u01b0\u1edbng, \u0111\u1ed9 ph\u1ea3n x\u1ea1 d\u1ecbu.<br \/>\n&#8211; Shot peening: d\u00f9ng bi (th\u00e9p\/Inox\/ceramic) v\u1edbi c\u01b0\u1eddng \u0111\u1ed9 ki\u1ec3m so\u00e1t \u0111\u1ec3 t\u1ea1o \u1ee9ng su\u1ea5t n\u00e9n t\u0103ng b\u1ec1n m\u1ecfi. Tr\u00ean Inox m\u1ecfng c\u1ea7n th\u1eadn tr\u1ecdng v\u00ec c\u00f3 th\u1ec3 bi\u1ebfn d\u1ea1ng. Theo SAE J443\/J442, c\u01b0\u1eddng \u0111\u1ed9 \u0111\u01b0\u1ee3c \u0111o b\u1eb1ng d\u1ea3i Almen.<\/p>\n<p>Ghi ch\u00fa thu\u1eadt ng\u1eef t\u1ea1i x\u01b0\u1edfng:<br \/>\n&#8211; \u201cPhun c\u00e1t\u201d th\u01b0\u1eddng \u00e1m ch\u1ec9 d\u00f9ng h\u1ea1t m\u00e0i g\u00f3c (Al2O3, garnet).<br \/>\n&#8211; \u201cPhun bi\u201d trong th\u1ef1c t\u1ebf c\u00f3 th\u1ec3 l\u00e0 bead blasting (bi tr\u00f2n) ho\u1eb7c shot peening. V\u1edbi m\u1ee5c ti\u00eau b\u1ec1 m\u1eb7t m\u1edd \u0111\u1ed3ng nh\u1ea5t, \u01b0u ti\u00ean bead blasting b\u1eb1ng bi th\u1ee7y tinh\/g\u1ed1m ho\u1eb7c bi Inox.<\/p>\n<h2 id=\"toc-1-chon-vat-lieu-hat-anh-huong-truc-tiep-den-do-mo-va\">Ch\u1ecdn v\u1eadt li\u1ec7u h\u1ea1t: \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn \u0111\u1ed9 m\u1edd v\u00e0 s\u1ea1ch g\u1ec9<\/h2>\n<p>&#8211; Bi th\u1ee7y tinh (glass bead, 90\u2013300 \u00b5m): t\u1ea1o m\u1edd tinh t\u1ebf, \u00edt x\u01b0\u1edbc, Ra \u0111i\u1ec3n h\u00ecnh 0,8\u20131,6 \u00b5m t\u00f9y k\u00edch c\u1ee1\/\u00e1p su\u1ea5t. Kh\u00f4ng g\u00e2y nhi\u1ec5m s\u1eaft. T\u00e1i s\u1eed d\u1ee5ng 20\u201330 chu k\u1ef3.<br \/>\n&#8211; Bi g\u1ed1m (ceramic bead, 100\u2013300 \u00b5m): tu\u1ed5i th\u1ecd cao h\u01a1n th\u1ee7y tinh, b\u1ec1 m\u1eb7t s\u1eafc n\u00e9t h\u01a1n \u0111\u00f4i ch\u00fat, \u1ed5n \u0111\u1ecbnh tr\u00ean s\u1ea3n l\u01b0\u1ee3ng l\u1edbn.<br \/>\n&#8211; Oxit nh\u00f4m (aluminium oxide, 60\u2013120 mesh): c\u1eaft nhanh, nh\u00e1m cao h\u01a1n, Ra 1,5\u20133,5 \u00b5m; h\u1ee3p khi c\u1ea7n \u0111\u1ed9 b\u00e1m s\u01a1n cao. Kh\u00f4ng ch\u1ee9a s\u1eaft, c\u00f3 th\u1ec3 t\u1ea1o b\u1ec1 m\u1eb7t \u201cm\u1edd s\u00e2u\u201d.<br \/>\n&#8211; Garnet (80\u2013120 mesh): t\u1ed1c \u0111\u1ed9 kh\u00e1, b\u1ee5i \u00edt h\u01a1n c\u00e1t s\u00f4ng, c\u00f3 th\u1ec3 t\u00e1i s\u1eed d\u1ee5ng v\u00e0i chu k\u1ef3; ph\u00f9 h\u1ee3p x\u1eed l\u00fd ngo\u00e0i tr\u1eddi.<br \/>\n&#8211; Bi Inox (stainless shot): d\u00f9ng khi mu\u1ed1n peen nh\u1eb9 ho\u1eb7c c\u1ea7n t\u00e1i s\u1eed d\u1ee5ng nhi\u1ec1u; tr\u00e1nh nhi\u1ec5m s\u1eaft.<br \/>\n&#8211; Tr\u00e1nh: bi th\u00e9p carbon\/c\u00e1t silic cho Inox v\u00ec nguy c\u01a1 nh\u00fang nhi\u1ec5m s\u1eaft (tea-staining) v\u00e0 b\u1ee5i silica (an to\u00e0n lao \u0111\u1ed9ng).<\/p>\n<p>Tham chi\u1ebfu ti\u00eau chu\u1ea9n v\u1eadt li\u1ec7u h\u1ea1t: ISO 11126\/11127 (y\u00eau c\u1ea7u v\u00e0 th\u1eed nghi\u1ec7m h\u1ea1t phun).<\/p>\n<h2 id=\"toc-2-thong-so-cong-nghe-quyet-dinh-do-mo-dong-nhat\">Th\u00f4ng s\u1ed1 c\u00f4ng ngh\u1ec7 quy\u1ebft \u0111\u1ecbnh \u201c\u0111\u1ed9 m\u1edd \u0111\u1ed3ng nh\u1ea5t\u201d<\/h2>\n<p>C\u00e1c bi\u1ebfn s\u1ed1 ch\u00ednh v\u00e0 khuy\u1ebfn ngh\u1ecb \u0111i\u1ec3m kh\u1edfi \u0111\u1ea7u cho Inox 304\/316 (t\u1ea5m 1\u20133 mm, m\u1ed1i h\u00e0n TIG\/MIG \u0111\u00e3 l\u00e0m s\u1ea1ch d\u1ea7u m\u1ee1):<br \/>\n&#8211; K\u00edch c\u1ee1 h\u1ea1t:<br \/>\n  &#8211; Bead th\u1ee7y tinh 100\u2013170 mesh (90\u2013150 \u00b5m): Ra 0,8\u20131,4 \u00b5m.<br \/>\n  &#8211; Bead th\u1ee7y tinh 60\u2013100 mesh (150\u2013250 \u00b5m): Ra 1,2\u20132,0 \u00b5m.<br \/>\n  &#8211; Al2O3 80 mesh (~180 \u00b5m): Ra 2,0\u20133,0 \u00b5m.<br \/>\n&#8211; \u00c1p su\u1ea5t bu\u1ed3ng\/n\u00f2ng phun: 3,5\u20136,5 bar (50\u201395 psi). H\u1ea1t c\u00e0ng to, \u00e1p su\u1ea5t c\u00f3 th\u1ec3 th\u1ea5p h\u01a1n \u0111\u1ec3 tr\u00e1nh \u201cover-blast\u201d.<br \/>\n&#8211; Kho\u1ea3ng c\u00e1ch \u0111\u1ea7u phun \u2013 b\u1ec1 m\u1eb7t: 100\u2013200 mm.<br \/>\n&#8211; G\u00f3c phun: 60\u201390\u00b0. V\u1edbi bead tr\u00f2n, 80\u201390\u00b0 cho \u0111\u1ed9 m\u1edd \u0111\u1ed3ng \u0111\u1ec1u nh\u1ea5t.<br \/>\n&#8211; T\u1ed1c \u0111\u1ed9\/bi\u00ean d\u1ea1ng qu\u00e9t: ch\u1ed3ng l\u1ea5p 50% \u2013 70%, qu\u00e9t ch\u00e9o 2 h\u01b0\u1edbng (cross-hatch) \u0111\u1ec3 tri\u1ec7t \u201cv\u1eb1n c\u1ecdp\u201d.<br \/>\n&#8211; L\u01b0u l\u01b0\u1ee3ng\/h\u1ed3i l\u01b0u h\u1ea1t: gi\u1eef \u1ed5n \u0111\u1ecbnh \u0111\u1ec3 tr\u00e1nh thay \u0111\u1ed5i Ra trong ca s\u1ea3n xu\u1ea5t.<br \/>\n&#8211; \u0110\u1ed9 kh\u00f4 kh\u00ed n\u00e9n: \u0111i\u1ec3m s\u01b0\u01a1ng th\u1ea5p h\u01a1n nhi\u1ec7t \u0111\u1ed9 m\u00f4i tr\u01b0\u1eddng \u22653\u00b0C \u0111\u1ec3 tr\u00e1nh \u201c\u1ed1 mu\u1ed1i\u201d [ISO 8502].<br \/>\n&#8211; B\u00e9c phun: boron carbide\/tungsten carbide; m\u00f2n b\u00e9c l\u00e0m thay \u0111\u1ed5i g\u00f3c tia v\u00e0 \u0111\u1ed9 \u0111\u1ed3ng \u0111\u1ec1u \u2013 ki\u1ec3m tra \u0111\u1ecbnh k\u1ef3.<\/p>\n<p>N\u1ebfu m\u1ee5c ti\u00eau l\u00e0 shot peening t\u0103ng b\u1ec1n m\u1ecfi:<br \/>\n&#8211; C\u01b0\u1eddng \u0111\u1ed9 Almen A: 0,006\u20130,012 A cho chi ti\u1ebft m\u1ecfng Inox; 0,010\u20130,016 A cho chi ti\u1ebft d\u00e0y h\u01a1n.<br \/>\n&#8211; Ph\u1ee7 k\u00edn (coverage): \u2265100%, \u1ee9ng d\u1ee5ng trang tr\u00ed c\u00f3 th\u1ec3 d\u00f9ng 150\u2013200% \u0111\u1ec3 \u0111\u1ec1u m\u00e0u; \u0111o theo SAE J443\/J444.<\/p>\n<h2 id=\"toc-3-do-nham-muc-tieu-theo-ung-dung\">\u0110\u1ed9 nh\u00e1m m\u1ee5c ti\u00eau theo \u1ee9ng d\u1ee5ng<\/h2>\n<p>&#8211; M\u1edd trang tr\u00ed cao c\u1ea5p (ki\u1ebfn tr\u00fac, \u0111\u1ed3 n\u1ed9i th\u1ea5t): Ra 0,8\u20131,6 \u00b5m b\u1eb1ng bead th\u1ee7y tinh\/g\u1ed1m.<br \/>\n&#8211; M\u1edd s\u00e2u, ch\u1ed1ng ch\u00f3i (thi\u1ebft b\u1ecb ngo\u00e0i tr\u1eddi, khu c\u00f4ng c\u1ed9ng): Ra 1,5\u20132,5 \u00b5m.<br \/>\n&#8211; Neo b\u00e1m cho s\u01a1n b\u1ed9t\/PU\/epoxy: Ra 2,5\u20134,0 \u00b5m (th\u01b0\u1eddng d\u00f9ng Al2O3\/garnet).<br \/>\n\u0110o theo ISO 4287\/ISO 8503-4 b\u1eb1ng m\u00e1y \u0111o nh\u00e1m ti\u1ebfp x\u00fac ho\u1eb7c b\u0103ng replica.<\/p>\n<h2 id=\"toc-4-quy-trinh-8-buoc-de-dat-be-mat-mo-dong-nhat\">Quy tr\u00ecnh 8 b\u01b0\u1edbc \u0111\u1ec3 \u0111\u1ea1t b\u1ec1 m\u1eb7t m\u1edd \u0111\u1ed3ng nh\u1ea5t<\/h2>\n<p>1) Kh\u1eed d\u1ea7u m\u1ee1: t\u1ea9y r\u1eeda ki\u1ec1m ho\u1eb7c dung m\u00f4i, tr\u00e1ng DI; d\u1ea7u m\u1ee1 l\u00e0m t\u1ee5 h\u1ea1t, g\u00e2y loang m\u00e0u.<br \/>\n2) Che ch\u1eafn (masking): b\u1ea3o v\u1ec7 b\u1ec1 m\u1eb7t kh\u00f4ng phun, ren, l\u1ed7 chu\u1ea9n.<br \/>\n3) Ch\u1ecdn h\u1ea1t\/th\u00f4ng s\u1ed1: x\u00e1c l\u1eadp tr\u00ean t\u1ea5m m\u1eabu c\u00f9ng m\u00e1c Inox v\u00e0 l\u1ecbch s\u1eed nhi\u1ec7t (\u0111\u1eb7c bi\u1ec7t v\u00f9ng HAZ).<br \/>\n4) Phun th\u1eed \u2013 t\u1ed1i \u01b0u: \u0111i\u1ec1u ch\u1ec9nh \u00e1p su\u1ea5t, g\u00f3c, t\u1ed1c \u0111\u1ed9 \u0111\u1ec3 \u0111\u1ea1t Ra, m\u00e0u v\u00e0 \u0111\u1ed9 \u0111\u1ed3ng \u0111\u1ec1u mong mu\u1ed1n.<br \/>\n5) Phun s\u1ea3n xu\u1ea5t: qu\u00e9t ch\u00e9o, ch\u1ed3ng l\u1ea5p 50\u201370%, gi\u1eef kho\u1ea3ng c\u00e1ch\/\u00e1p su\u1ea5t \u1ed5n \u0111\u1ecbnh, thay b\u00e9c khi m\u00f2n.<br \/>\n6) V\u1ec7 sinh sau phun: th\u1ed5i kh\u00ed s\u1ea1ch, rung\/si\u00eau \u00e2m, tr\u00e1ng DI \u0111\u1ec3 lo\u1ea1i b\u1ee5i m\u1ecbn.<br \/>\n7) Th\u1ee5 \u0111\u1ed9ng h\u00f3a (passivation): theo ASTM A967\/A380 \u2013 dung d\u1ecbch citric 4\u201310% \u1edf 49\u201360\u00b0C trong 20\u201330 ph\u00fat (ho\u1eb7c nitric theo \u0111i\u1ec1u ki\u1ec7n), tr\u00e1ng DI v\u00e0 s\u1ea5y kh\u00f4; b\u01b0\u1edbc n\u00e0y lo\u1ea1i b\u1ecf s\u1eaft t\u1ef1 do, \u1ed5n \u0111\u1ecbnh l\u1edbp oxit Cr.<br \/>\n8) Ki\u1ec3m tra ch\u1ea5t l\u01b0\u1ee3ng:<br \/>\n   &#8211; Ra\/Rz (ISO 4287), so v\u1edbi m\u1eabu chu\u1ea9n.<br \/>\n   &#8211; \u0110\u1ed9 b\u00f3ng GU \u1edf 60\u00b0 (m\u1ee5c ti\u00eau m\u1edd: ~5\u201320 GU, t\u00f9y \u00fd \u0111\u1ed3).<br \/>\n   &#8211; S\u1eaft t\u1ef1 do: th\u1eed CuSO4 theo ASTM A967 (kh\u00f4ng xu\u1ea5t hi\u1ec7n l\u1edbp \u0111\u1ed3ng).<br \/>\n   &#8211; Mu\u1ed1i h\u00f2a tan tr\u01b0\u1edbc khi s\u01a1n: Bresle ISO 8502-6\/-9.<br \/>\n   &#8211; M\u00e0u s\u1eafc\/\u0111\u1ed3ng \u0111\u1ec1u: \u00e1nh s\u00e1ng khu\u1ebfch t\u00e1n \u1edf 2000\u20134000 lux \u0111\u1ec3 so th\u1ecb sai.<\/p>\n<h2 id=\"toc-5-ung-dung-dien-hinh-trong-cong-nghiep\">\u1ee8ng d\u1ee5ng \u0111i\u1ec3n h\u00ecnh trong c\u00f4ng nghi\u1ec7p<\/h2>\n<p>&#8211; Ki\u1ebfn tr\u00fac \u2013 n\u1ed9i\/ngo\u1ea1i th\u1ea5t: \u1ed1p t\u01b0\u1eddng, thang m\u00e1y, kiosk, \u0111\u1ed3 n\u1ed9i th\u1ea5t m\u1edd cao c\u1ea5p, gi\u1ea3m ch\u00f3i \u0111\u00e8n.<br \/>\n&#8211; Thi\u1ebft b\u1ecb th\u1ef1c ph\u1ea9m\/d\u01b0\u1ee3c: v\u1ecf m\u00e1y, ph\u1ec5u, \u1ed1ng, y\u00eau c\u1ea7u b\u1ec1 m\u1eb7t k\u00edn, d\u1ec5 v\u1ec7 sinh; \u01b0u ti\u00ean bead g\u1ed1m\/th\u1ee7y tinh + passivation.<br \/>\n&#8211; C\u01a1 kh\u00ed \u2013 h\u00e0n k\u1ebft c\u1ea5u Inox: x\u00f3a v\u1ebft nhi\u1ec7t, \u0111\u1ed3ng b\u1ed9 m\u00e0u v\u00f9ng HAZ.<br \/>\n&#8211; S\u01a1n\/ph\u1ee7: t\u1ea1o neo b\u00e1m \u0111\u1ed3ng \u0111\u1ec1u tr\u01b0\u1edbc s\u01a1n b\u1ed9t\/PU tr\u00ean khung, lan can, \u0111\u1ed3 ngo\u1ea1i th\u1ea5t.<br \/>\n&#8211; H\u00e0ng h\u1ea3i\/ngo\u00e0i tr\u1eddi: b\u1ec1 m\u1eb7t m\u1edd gi\u1ea3m l\u00f3a, \u00edt th\u1ea5y d\u1ea5u tay, ch\u1ed1ng \u201ctea-staining\u201d khi passivation \u0111\u00fang.<\/p>\n<h2 id=\"toc-6-kiem-soat-rui-ro-va-loi-thuong-gap\">Ki\u1ec3m so\u00e1t r\u1ee7i ro v\u00e0 l\u1ed7i th\u01b0\u1eddng g\u1eb7p<\/h2>\n<p>&#8211; Nhi\u1ec5m s\u1eaft (tea-staining): do d\u00f9ng bi th\u00e9p carbon ho\u1eb7c chung thi\u1ebft b\u1ecb v\u1edbi th\u00e9p \u0111en. Kh\u1eafc ph\u1ee5c: h\u1ea1t phi s\u1eaft, thi\u1ebft b\u1ecb\/ch\u1ed5i h\u00fat ri\u00eang cho Inox, passivation ASTM A967.<br \/>\n&#8211; \u201cV\u1eb1n c\u1ecdp\u201d\/loang m\u00e0u: do ch\u1ed3ng l\u1ea5p kh\u00f4ng \u0111\u1ec1u, h\u1ea1t m\u00f2n kh\u00f4ng \u0111\u1ed3ng nh\u1ea5t, g\u00f3c\/kh\u00f3a \u00e1p su\u1ea5t dao \u0111\u1ed9ng. Kh\u1eafc ph\u1ee5c: qu\u00e9t ch\u00e9o, ki\u1ec3m so\u00e1t b\u00e9c v\u00e0 \u00e1p, s\u00e0ng h\u1ea1t \u0111\u1ecbnh k\u1ef3.<br \/>\n&#8211; Qu\u00e1 nh\u00e1m\/\u201corange peel\u201d: \u00e1p su\u1ea5t cao, h\u1ea1t l\u1edbn, kho\u1ea3ng c\u00e1ch qu\u00e1 g\u1ea7n. Gi\u1ea3m \u00e1p, t\u0103ng kho\u1ea3ng c\u00e1ch, h\u1ea1t m\u1ecbn h\u01a1n.<br \/>\n&#8211; Bi\u1ebfn d\u1ea1ng t\u1ea5m m\u1ecfng: do nhi\u1ec7t\/\u1ee9ng su\u1ea5t va \u0111\u1eadp. D\u00f9ng \u00e1p su\u1ea5t th\u1ea5p, bead tr\u00f2n m\u1ecbn, phun 2 m\u1eb7t c\u00e2n b\u1eb1ng ho\u1eb7c ch\u1ecdn wet\/vapor blasting.<br \/>\n&#8211; C\u1eb7n mu\u1ed1i\/chloride: d\u1eabn t\u1edbi \u1ed1 n\u00e2u sau th\u1eddi gian. R\u1eeda DI, th\u1eed Bresle tr\u01b0\u1edbc khi s\u01a1n, b\u1ea3o qu\u1ea3n kh\u00f4.<br \/>\n&#8211; An to\u00e0n s\u1ee9c kh\u1ecfe: kh\u00f4ng d\u00f9ng c\u00e1t silic; d\u00f9ng h\u00fat b\u1ee5i HEPA, PPE \u0111\u1ea1t chu\u1ea9n; tu\u00e2n th\u1ee7 quy \u0111\u1ecbnh v\u1ec1 b\u1ee5i h\u00f4 h\u1ea5p (xem h\u01b0\u1edbng d\u1eabn NIOSH\/OSHA).<\/p>\n<h2 id=\"toc-7-so-sanh-nhanh-voi-cac-hoan-thien-inox-pho-bien\">So s\u00e1nh nhanh v\u1edbi c\u00e1c ho\u00e0n thi\u1ec7n Inox ph\u1ed5 bi\u1ebfn<\/h2>\n<p>&#8211; No.2B\/BA (c\u00e1n ngu\u1ed9i\/\u00e1nh g\u01b0\u01a1ng BA): b\u1ec1 m\u1eb7t ph\u1eb3ng, ph\u1ea3n x\u1ea1 cao; d\u1ec5 l\u1ed9 v\u1ebft x\u01b0\u1edbc, ch\u00f3i.<br \/>\n&#8211; Hairline\/No.4: v\u00e2n x\u01b0\u1edbc \u0111\u1ecbnh h\u01b0\u1edbng, sang tr\u1ecdng; l\u1ed9 v\u1ebft x\u01b0\u1edbc khi s\u1eed d\u1ee5ng sai h\u01b0\u1edbng.<br \/>\n&#8211; Phun c\u00e1t\/bi (matte\/satin): ph\u1ea3n x\u1ea1 khu\u1ebfch t\u00e1n, \u0111\u1ed3ng \u0111\u1ec1u \u1edf m\u1ecdi h\u01b0\u1edbng, \u00edt l\u1ed9 d\u1ea5u tay, th\u00e2n thi\u1ec7n \u00e1nh s\u00e1ng c\u00f4ng c\u1ed9ng; c\u00f3 th\u1ec3 \u0111\u1ea1t nh\u00e1m \u0111\u1ee7 b\u00e1m s\u01a1n.<\/p>\n<h2 id=\"toc-8-lua-chon-he-thong-thiet-bi-cho-xuong-tai-ha-noi\">L\u1ef1a ch\u1ecdn h\u1ec7 th\u1ed1ng thi\u1ebft b\u1ecb cho x\u01b0\u1edfng t\u1ea1i H\u00e0 N\u1ed9i<\/h2>\n<p>&#8211; T\u1ee7 phun h\u00fat (suction) vs. \u00e1p l\u1ef1c (pressure): suction ph\u00f9 h\u1ee3p chi ti\u1ebft nh\u1ecf, \u00e1o nh\u00e1m nh\u1eb9; pressure cho n\u0103ng su\u1ea5t cao\/nh\u00e1m s\u00e2u\/\u0111\u1ed3ng \u0111\u1ec1u t\u1ed1t h\u01a1n.<br \/>\n&#8211; Bu\u1ed3ng phun t\u00e1i tu\u1ea7n ho\u00e0n h\u1ea1t + thu b\u1ee5i cartridge: \u1ed5n \u0111\u1ecbnh ch\u1ea5t l\u01b0\u1ee3ng l\u00f4 l\u1edbn, gi\u1ea3m b\u1ee5i m\u00f4i tr\u01b0\u1eddng.<br \/>\n&#8211; Wheel blast (m\u00e1y c\u00e1nh v\u0103ng): cho s\u1ea3n l\u01b0\u1ee3ng l\u1edbn, ph\u00f4i \u0111\u00fac\/\u0111\u00f9n; \u00edt linh ho\u1ea1t khi c\u1ea7n ho\u00e0n thi\u1ec7n trang tr\u00ed cao c\u1ea5p.<br \/>\n&#8211; Wet\/vapor blasting: b\u1ec1 m\u1eb7t m\u1ecbn, \u00edt b\u1ee5i, gi\u1ea3m nhi\u1ec7t v\u00e0 bi\u1ebfn d\u1ea1ng \u2013 ph\u00f9 h\u1ee3p t\u1ea5m m\u1ecfng, khu v\u1ef1c d\u00e2n c\u01b0.<br \/>\n&#8211; Qu\u1ea3n l\u00fd h\u1ea1t: s\u00e0ng l\u1ecdc, t\u00e1ch b\u1ee5i, b\u1ed5 sung h\u1ea1t m\u1edbi \u0111\u1ec3 gi\u1eef ph\u00e2n b\u1ed1 k\u00edch c\u1ee1 \u1ed5n \u0111\u1ecbnh.<\/p>\n<h2 id=\"toc-9-vi-du-tham-khao-thong-so-thuc-te\">V\u00ed d\u1ee5 tham kh\u1ea3o th\u00f4ng s\u1ed1 th\u1ef1c t\u1ebf<\/h2>\n<p>B\u1ed1i c\u1ea3nh: \u1ed0p kiosk b\u1eb1ng Inox 304 d\u00e0y 1,5 mm, y\u00eau c\u1ea7u m\u1edd trang tr\u00ed \u0111\u1ed3ng \u0111\u1ec1u, \u00edt l\u1ed9 d\u1ea5u tay.<br \/>\n&#8211; H\u1ea1t: bead th\u1ee7y tinh 150\u2013250 \u00b5m.<br \/>\n&#8211; \u00c1p su\u1ea5t: 4,5 bar; kho\u1ea3ng c\u00e1ch b\u00e9c 150 mm; g\u00f3c 85\u201390\u00b0.<br \/>\n&#8211; Qu\u00e9t ch\u00e9o, ch\u1ed3ng l\u1ea5p 60%; passivation citric 7% \u1edf 55\u00b0C trong 25 ph\u00fat.<br \/>\n&#8211; K\u1ebft qu\u1ea3: Ra ~1,2 \u00b5m; \u0111\u1ed9 b\u00f3ng 10\u201312 GU (60\u00b0); m\u00e0u \u0111\u1ed3ng \u0111\u1ec1u gi\u1eefa v\u00f9ng n\u1ec1n v\u00e0 HAZ.<\/p>\n<h2 id=\"toc-10-cau-hoi-thuong-gap\">C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p<\/h2>\n<p>&#8211; C\u00f3 n\u00ean d\u00f9ng bi th\u00e9p carbon \u0111\u1ec3 gi\u1ea3m chi ph\u00ed? Kh\u00f4ng. Nguy c\u01a1 nhi\u1ec5m s\u1eaft g\u00e2y \u1ed1 n\u00e2u r\u1ea5t cao tr\u00ean Inox, nh\u1ea5t l\u00e0 ngo\u00e0i tr\u1eddi.<br \/>\n&#8211; Phun bi th\u1ee7y tinh kh\u00e1c phun c\u00e1t th\u1ebf n\u00e0o? Bead th\u1ee7y tinh t\u1ea1o m\u1edd m\u1ecbn, \u00edt x\u01b0\u1edbc \u0111\u1ecbnh h\u01b0\u1edbng; h\u1ea1t m\u00e0i g\u00f3c t\u1ea1o nh\u00e1m s\u00e2u h\u01a1n \u0111\u1ec3 b\u00e1m s\u01a1n.<br \/>\n&#8211; C\u00f3 c\u1ea7n passivation sau phun? Khuy\u1ebfn ngh\u1ecb m\u1ea1nh, \u0111\u1eb7c bi\u1ec7t khi l\u1eafp \u0111\u1eb7t ngo\u00e0i tr\u1eddi\/ven bi\u1ec3n ho\u1eb7c sau khi gia c\u00f4ng h\u00e0n\/c\u1eaft.<br \/>\n&#8211; C\u00f3 th\u1ec3 phun Inox 316L? C\u00f3; ch\u1ecdn bead th\u1ee7y tinh\/g\u1ed1m ho\u1eb7c Al2O3; v\u1eabn n\u00ean passivation \u0111\u1ec3 t\u1ed1i \u0111a h\u00f3a b\u1ec1n \u0103n m\u00f2n.<br \/>\n&#8211; B\u1ec1 m\u1eb7t m\u1edd c\u00f3 d\u1ec5 v\u1ec7 sinh? C\u00f3, n\u1ebfu Ra ~0,8\u20131,6 \u00b5m; Ra qu\u00e1 cao d\u1ec5 gi\u1eef b\u1ea9n. Ch\u1ecdn ch\u1ea5t t\u1ea9y kh\u00f4ng ch\u1ee9a chloride m\u1ea1nh.<\/p>\n<h2 id=\"toc-11-tieu-chuan-va-tai-lieu-tham-khao\">Ti\u00eau chu\u1ea9n v\u00e0 t\u00e0i li\u1ec7u tham kh\u1ea3o<\/h2>\n<p>&#8211; ASTM A967\/A967M \u2013 Passivation of Stainless Steel; ASTM A380 \u2013 Cleaning, Descaling, and Passivation.<br \/>\n&#8211; SAE J442\/J443 \u2013 Almen Strips, Shot Peening Practice; SAE J444 \u2013 Coverage and Visual Inspection.<br \/>\n&#8211; ISO 11126\/11127 \u2013 Non-metallic abrasives for blasting and test methods.<br \/>\n&#8211; ISO 8503-4 \u2013 Surface roughness characteristics of blast-cleaned steel substrates (d\u00f9ng nh\u01b0 tham chi\u1ebfu \u0111o profile).<br \/>\n&#8211; ISO 4287 \u2013 Geometrical Product Specifications (GPS) \u2013 Surface texture.<br \/>\n&#8211; ISO 8502-6\/-9 \u2013 Ph\u01b0\u01a1ng ph\u00e1p Bresle ki\u1ec3m tra mu\u1ed1i h\u00f2a tan.<br \/>\n&#8211; H\u01b0\u1edbng d\u1eabn an to\u00e0n b\u1ee5i silica: NIOSH\/OSHA (khuy\u1ebfn c\u00e1o kh\u00f4ng d\u00f9ng c\u00e1t silic).<\/p>\n<h2 id=\"toc-12-ket-luan\">K\u1ebft lu\u1eadn<\/h2>\n<p>\u0110\u1ec3 t\u1ea1o b\u1ec1 m\u1eb7t Inox m\u1edd \u0111\u1ed3ng nh\u1ea5t v\u00e0 b\u1ec1n l\u00e2u:<br \/>\n&#8211; Ch\u1ecdn \u0111\u00fang h\u1ea1t (\u01b0u ti\u00ean bead th\u1ee7y tinh\/g\u1ed1m ho\u1eb7c Al2O3), tr\u00e1nh m\u1ecdi ngu\u1ed3n s\u1eaft.<br \/>\n&#8211; Ki\u1ec3m so\u00e1t th\u00f4ng s\u1ed1 c\u1ed1t l\u00f5i (k\u00edch c\u1ee1 h\u1ea1t, \u00e1p su\u1ea5t, g\u00f3c, kho\u1ea3ng c\u00e1ch, ch\u1ed3ng l\u1ea5p).<br \/>\n&#8211; Chu\u1ea9n h\u00f3a quy tr\u00ecnh s\u1ea1ch \u2013 passivation theo ASTM A967 \u0111\u1ec3 tri\u1ec7t nguy c\u01a1 \u1ed1 n\u00e2u.<br \/>\n&#8211; \u0110o l\u01b0\u1eddng Ra, \u0111\u1ed9 b\u00f3ng v\u00e0 th\u1eed nhi\u1ec5m s\u1eaft \u0111\u1ec3 b\u1ea3o \u0111\u1ea3m l\u1eb7p l\u1ea1i ch\u1ea5t l\u01b0\u1ee3ng.<\/p>\n<p>C\u1ea7n t\u01b0 v\u1ea5n ch\u1ecdn h\u1ea1t, t\u1ed1i \u01b0u th\u00f4ng s\u1ed1 ho\u1eb7c gia c\u00f4ng m\u1eabu theo ti\u00eau chu\u1ea9n? Li\u00ean h\u1ec7 Inox C\u01b0\u1eddng Th\u1ecbnh \u0111\u1ec3 \u0111\u01b0\u1ee3c k\u1ef9 s\u01b0 b\u1ec1 m\u1eb7t 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 phun c\u00e1t v\u00e0 phun bi Inox \u0111\u1ec3 t\u1ea1o b\u1ec1 m\u1eb7t m\u1edd \u0111\u1ed3ng nh\u1ea5t: ch\u1ecdn h\u1ea1t, th\u00f4ng s\u1ed1 Ra, \u00e1p su\u1ea5t, ti\u00eau chu\u1ea9n ki\u1ec3m tra, \u1ee9ng d\u1ee5ng th\u1ef1c t\u1ebf v\u00e0 l\u01b0u \u00fd ch\u1ed1ng g\u1ec9.<\/p>\n","protected":false},"author":7,"featured_media":1036,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[23],"tags":[],"class_list":["post-1867","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\/1867","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=1867"}],"version-history":[{"count":0,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/posts\/1867\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/media\/1036"}],"wp:attachment":[{"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/media?parent=1867"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/categories?post=1867"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/tags?post=1867"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}