{"id":1420,"date":"2025-12-12T12:35:49","date_gmt":"2025-12-12T05:35:49","guid":{"rendered":"https:\/\/inoxcuongthinh.com\/phun-cat-phun-bi-inox-tao-be-mat-mo-dong-nhat-dung-ky-thuat\/"},"modified":"2025-12-12T12:35:49","modified_gmt":"2025-12-12T05:35:49","slug":"phun-cat-phun-bi-inox-tao-be-mat-mo-dong-nhat-dung-ky-thuat","status":"publish","type":"post","link":"https:\/\/inoxcuongthinh.com\/phun-cat-phun-bi-inox-tao-be-mat-mo-dong-nhat-dung-ky-thuat\/","title":{"rendered":"Phun c\u00e1t &#038; phun bi Inox: T\u1ea1o b\u1ec1 m\u1eb7t m\u1edd \u0111\u1ed3ng nh\u1ea5t, \u0111\u00fang 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-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-yeu-cau-ky-thuat-cua-be-mat-mo-dong-nhat\">Y\u00eau c\u1ea7u k\u1ef9 thu\u1eadt c\u1ee7a b\u1ec1 m\u1eb7t m\u1edd \u0111\u1ed3ng nh\u1ea5t<\/a><\/li>\n<li><a href=\"#toc-2-lua-chon-hat-mai-anh-huong-truc-tiep-toi-do-mo-va-\">L\u1ef1a ch\u1ecdn h\u1ea1t m\u00e0i: \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp t\u1edbi \u0111\u1ed9 m\u1edd v\u00e0 \u0111\u1ed3ng nh\u1ea5t<\/a><\/li>\n<li><a href=\"#toc-3-thiet-bi-va-thong-so-van-hanh-khuyen-nghi\">Thi\u1ebft b\u1ecb v\u00e0 th\u00f4ng s\u1ed1 v\u1eadn h\u00e0nh khuy\u1ebfn ngh\u1ecb<\/a><\/li>\n<li><a href=\"#toc-4-quy-trinh-dat-be-mat-mo-dong-nhat-tung-buoc\">Quy tr\u00ecnh \u0111\u1ea1t b\u1ec1 m\u1eb7t m\u1edd \u0111\u1ed3ng nh\u1ea5t: t\u1eebng b\u01b0\u1edbc<\/a><\/li>\n<li><a href=\"#toc-5-kiem-soat-chat-luong-va-phep-thu-nen-ap-dung\">Ki\u1ec3m so\u00e1t ch\u1ea5t l\u01b0\u1ee3ng v\u00e0 ph\u00e9p th\u1eed n\u00ean \u00e1p d\u1ee5ng<\/a><\/li>\n<li><a href=\"#toc-6-loi-thuong-gap-va-cach-khac-phuc\">L\u1ed7i th\u01b0\u1eddng g\u1eb7p v\u00e0 c\u00e1ch kh\u1eafc ph\u1ee5c<\/a><\/li>\n<li><a href=\"#toc-7-ung-dung-tieu-bieu\">\u1ee8ng d\u1ee5ng ti\u00eau bi\u1ec3u<\/a><\/li>\n<li><a href=\"#toc-8-chi-phi-nang-suat-va-an-toan-moi-truong\">Chi ph\u00ed, n\u0103ng su\u1ea5t v\u00e0 an to\u00e0n m\u00f4i tr\u01b0\u1eddng<\/a><\/li>\n<li><a href=\"#toc-9-phun-bi-tang-ben-shot-peening-cho-inox-khi-nao-dun\">Phun bi t\u0103ng b\u1ec1n (shot peening) cho inox: khi n\u00e0o d\u00f9ng?<\/a><\/li>\n<li><a href=\"#toc-10-faq-nhanh\">FAQ nhanh<\/a><\/li>\n<li><a href=\"#toc-11-nguon-tham-khao\">Ngu\u1ed3n tham kh\u1ea3o<\/a><\/li>\n<li><a href=\"#toc-12-ket-luan-va-khuyen-nghi-thuc-hanh\">K\u1ebft lu\u1eadn v\u00e0 khuy\u1ebfn ngh\u1ecb th\u1ef1c h\u00e0nh<\/a><\/li>\n<\/ul>\n<\/div>\n<p>Ho\u00e0n thi\u1ec7n b\u1ec1 m\u1eb7t m\u1edd (matte\/satin) \u0111\u1ed3ng nh\u1ea5t cho inox b\u1eb1ng phun c\u00e1t ho\u1eb7c phun bi l\u00e0 l\u1ef1a ch\u1ecdn t\u1ed1i \u01b0u khi b\u1ea1n c\u1ea7n gi\u1ea3m ph\u1ea3n x\u1ea1, che v\u1ebft h\u00e0n nh\u1eb9, \u0111\u1ed3ng th\u1eddi t\u0103ng \u0111\u1ed9 \u0111\u1ed3ng \u0111\u1ec1u th\u1ecb gi\u00e1c tr\u01b0\u1edbc khi l\u1eafp d\u1ef1ng ho\u1eb7c ph\u1ee7 b\u1ea3o v\u1ec7. B\u00e0i vi\u1ebft n\u00e0y \u0111i th\u1eb3ng v\u00e0o k\u1ef9 thu\u1eadt, th\u00f4ng s\u1ed1 v\u00e0 ki\u1ec3m so\u00e1t ch\u1ea5t l\u01b0\u1ee3ng \u0111\u1ec3 gi\u00fap b\u1ea1n \u0111\u1ea1t b\u1ec1 m\u1eb7t m\u1edd chu\u1ea9n c\u00f4ng nghi\u1ec7p tr\u00ean inox 201\/304\/316 v\u00e0 c\u00e1c m\u00e1c kh\u00e1c.<\/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<p>&#8211; Phun c\u00e1t (abrasive\/grit blasting): d\u00f9ng h\u1ea1t m\u00e0i c\u00f3 c\u1ea1nh s\u1eafc (alumina, garnet\u2026) \u0111\u1ec3 c\u1eaft g\u1ecdt c\u01a1 h\u1ecdc b\u1ec1 m\u1eb7t. Cho \u0111\u1ed9 nh\u00e1m cao h\u01a1n, b\u1ecf l\u1edbp \u00f4x\u00edt\/scale nhanh, nh\u01b0ng d\u1ec5 \u0111\u1ec3 l\u1ea1i b\u1ec1 m\u1eb7t \u201ch\u1ea1t cam\u201d n\u1ebfu qu\u00e1 tay.<br \/>\n&#8211; Phun bi (bead\/shot blasting): d\u00f9ng h\u1ea1t d\u1ea1ng c\u1ea7u (bi th\u1ee7y tinh, bi g\u1ed1m, bi inox). Bi th\u1ee7y tinh\/g\u1ed1m cho b\u1ec1 m\u1eb7t satin m\u1ecbn, \u0111\u1ed3ng nh\u1ea5t, \u00edt khuy\u1ebft t\u1eadt th\u1ecb gi\u00e1c; bi inox\/shot th\u00edch h\u1ee3p cho peening t\u0103ng b\u1ec1n.<\/p>\n<p>Khi m\u1ee5c ti\u00eau l\u00e0 \u201cm\u1edd \u0111\u1ed3ng nh\u1ea5t, trang tr\u00ed\u201d: \u01b0u ti\u00ean bi th\u1ee7y tinh ho\u1eb7c g\u1ed1m. Khi c\u1ea7n l\u00e0m s\u1ea1ch m\u1ea1nh, t\u0103ng \u0111\u1ed9 b\u00e1m ph\u1ee7: ch\u1ecdn h\u1ea1t g\u00f3c c\u1ea1nh nh\u01b0 alumina ho\u1eb7c garnet, sau \u0111\u00f3 c\u00f3 th\u1ec3 \u201ctinh\u201d l\u1ea1i b\u1eb1ng bi \u0111\u1ec3 \u0111\u1ed3ng \u0111\u1ec1u th\u1ea9m m\u1ef9.<\/p>\n<h2 id=\"toc-1-yeu-cau-ky-thuat-cua-be-mat-mo-dong-nhat\">Y\u00eau c\u1ea7u k\u1ef9 thu\u1eadt c\u1ee7a b\u1ec1 m\u1eb7t m\u1edd \u0111\u1ed3ng nh\u1ea5t<\/h2>\n<p>&#8211; \u0110\u1ed9 nh\u00e1m \u0111\u00edch tham kh\u1ea3o (Ra):<br \/>\n  + Satin trang tr\u00ed: 0,8\u20131,6 \u00b5m (bi th\u1ee7y tinh\/g\u1ed1m, \u01b0\u1edbt ho\u1eb7c kh\u00f4).<br \/>\n  + Chu\u1ea9n b\u1ecb s\u01a1n\/ph\u1ee7: 2,0\u20134,0 \u00b5m (alumina\/garnet).<br \/>\n&#8211; \u0110\u1ed9 b\u00f3ng (60\u00b0 gloss): th\u01b0\u1eddng 3\u201310 GU cho satin m\u1edd gi\u1ea3m ch\u00f3i.<br \/>\n&#8211; Kh\u00f4ng nhi\u1ec5m s\u1eaft ngo\u1ea1i lai (free iron), kh\u00f4ng s\u1ecdc ch\u1ed3ng l\u1edbp, kh\u00f4ng \u201cmap\u201d v\u1ebft h\u00e0n.<br \/>\n&#8211; Mu\u1ed1i h\u00f2a tan (Cl-) th\u1ea5p \u0111\u1ec3 h\u1ea1n ch\u1ebf tea-staining trong m\u00f4i tr\u01b0\u1eddng bi\u1ec3n (<5 \u00b5g\/cm\u00b2 n\u1ebfu y\u00eau c\u1ea7u cao).\n\nL\u01b0u \u00fd: Kh\u00f4ng c\u00f3 \u201cm\u00e3 s\u1ed1 finish\u201d qu\u1ed1c t\u1ebf th\u1ed1ng nh\u1ea5t cho b\u1ec1 m\u1eb7t phun; h\u00e3y ch\u1ed1t m\u1eabu chu\u1ea9n (control coupon) v\u1edbi kh\u00e1ch h\u00e0ng.\n\n\n\n<h2 id=\"toc-2-lua-chon-hat-mai-anh-huong-truc-tiep-toi-do-mo-va-\">L\u1ef1a ch\u1ecdn h\u1ea1t m\u00e0i: \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp t\u1edbi \u0111\u1ed9 m\u1edd v\u00e0 \u0111\u1ed3ng nh\u1ea5t<\/h2>\n<p>&#8211; Bi th\u1ee7y tinh (glass bead): l\u1ef1a ch\u1ecdn s\u1ed1 1 cho satin \u0111\u1ed3ng \u0111\u1ec1u tr\u00ean 304\/316; t\u00e1i s\u1eed d\u1ee5ng 20\u201330 v\u00f2ng; \u00edt nguy c\u01a1 nhi\u1ec5m s\u1eaft.<br \/>\n  + C\u1ee1 h\u1ea1t: 70\u2013140 mesh (\u2248106\u2013212 \u00b5m) cho satin m\u1ecbn; 40\u201370 mesh (\u2248212\u2013425 \u00b5m) cho m\u1edd th\u00f4.<br \/>\n&#8211; Bi g\u1ed1m (ceramic bead): b\u1ec1n h\u01a1n th\u1ee7y tinh, t\u1ea1o b\u1ec1 m\u1eb7t \u0111\u1ed3ng \u0111\u1ec1u, \u00edt v\u1ee1; \u0111\u1ea7u t\u01b0 ban \u0111\u1ea7u cao h\u01a1n.<br \/>\n&#8211; \u00d4x\u00edt nh\u00f4m (aluminum oxide): r\u1ea5t s\u1eafc, b\u00f3c l\u1edbp nhanh, t\u1ea1o Ra cao; c\u1ea7n ki\u1ec3m so\u00e1t \u0111\u1ec3 kh\u00f4ng qu\u00e1 th\u00f4.<br \/>\n  + C\u1ee1 80\u2013120 grit d\u00f9ng ph\u1ed5 bi\u1ebfn cho chu\u1ea9n b\u1ecb ph\u1ee7.<br \/>\n&#8211; Garnet: \u00edt b\u1ee5i, c\u1eaft \u1ed5n \u0111\u1ecbnh, th\u00e2n thi\u1ec7n m\u00f4i tr\u01b0\u1eddng h\u01a1n \u201cc\u00e1t s\u00f4ng\u201d.<br \/>\n&#8211; Bi inox\/shot inox (cho peening): tr\u00e1nh nhi\u1ec5m s\u1eaft; t\u00e1i s\u1eed d\u1ee5ng \u0111\u1ebfn h\u00e0ng ngh\u00ecn v\u00f2ng.<\/p>\n<p>Tuy\u1ec7t \u0111\u1ed1i kh\u00f4ng d\u00f9ng bi\/b\u1ed9t th\u00e9p carbon ho\u1eb7c c\u00e1t s\u00f4ng ch\u1ee9a silica t\u1ef1 do cho inox trang tr\u00ed v\u00ec:<br \/>\n&#8211; Nguy c\u01a1 nhi\u1ec5m s\u1eaft g\u00e2y r\u1ec9 n\u00e2u (tea-staining).<br \/>\n&#8211; R\u1ee7i ro b\u1ee5i silica t\u1ef1 do cho ng\u01b0\u1eddi v\u1eadn h\u00e0nh.<\/p>\n<h2 id=\"toc-3-thiet-bi-va-thong-so-van-hanh-khuyen-nghi\">Thi\u1ebft b\u1ecb v\u00e0 th\u00f4ng s\u1ed1 v\u1eadn h\u00e0nh khuy\u1ebfn ngh\u1ecb<\/h2>\n<p>&#8211; H\u1ec7 th\u1ed1ng:<br \/>\n  + Phun kh\u00ed n\u00e9n trong bu\u1ed3ng k\u00edn: linh ho\u1ea1t, ki\u1ec3m so\u00e1t t\u1ed1t, ph\u00f9 h\u1ee3p t\u1ea5m, \u1ed1ng, k\u1ebft c\u1ea5u.<br \/>\n  + Phun b\u00e1nh c\u00f4ng t\u00e1c (wheel blast): n\u0103ng su\u1ea5t cao cho linh ki\u1ec7n s\u1ed1 l\u01b0\u1ee3ng l\u1edbn, d\u00f9ng bi inox khi l\u00e0m inox.<br \/>\n  + Phun \u01b0\u1edbt (wet\/vapor): gi\u1ea3m b\u1ee5i, b\u1ec1 m\u1eb7t m\u1ecbn h\u01a1n, h\u1ea1n ch\u1ebf nhi\u1ec5m mu\u1ed1i; l\u00fd t\u01b0\u1edfng cho satin trang tr\u00ed v\u00e0 l\u00e0m s\u1ea1ch v\u00f9ng nhi\u1ec7t m\u00e0u sau h\u00e0n TIG.<br \/>\n&#8211; V\u00f2i phun: 6\u20138 mm (l\u00e0m vi\u1ec7c \u0111a d\u1ee5ng); v\u1eadt li\u1ec7u boron carbide cho tu\u1ed5i th\u1ecd cao.<br \/>\n&#8211; \u00c1p l\u1ef1c t\u1ea1i v\u00f2i:<br \/>\n  + Bi th\u1ee7y tinh\/g\u1ed1m: 3,5\u20135,5 bar.<br \/>\n  + \u00d4x\u00edt nh\u00f4m\/garnet: 4,5\u20137,0 bar.<br \/>\n&#8211; Kho\u1ea3ng c\u00e1ch: 150\u2013250 mm cho t\u1ea5m ph\u1eb3ng; 100\u2013150 mm cho chi ti\u1ebft nh\u1ecf.<br \/>\n&#8211; G\u00f3c phun: 70\u201390\u00b0 \u0111\u1ec3 \u0111\u1ea1t b\u1ec1 m\u1eb7t \u0111\u1ec1u; 60\u201375\u00b0 khi l\u00e0m v\u00f9ng h\u00e0n \u0111\u1ec3 h\u1ea1n ch\u1ebf \u201c\u0111\u00e0o r\u00e3nh\u201d.<br \/>\n&#8211; Qu\u1ef9 \u0111\u1ea1o: \u0111\u01b0\u1eddng \u0111i \u0111\u1ec1u, ch\u1ed3ng l\u1ea5p 30\u201350%, t\u1ed1c \u0111\u1ed9 t\u1ecbnh ti\u1ebfn \u1ed5n \u0111\u1ecbnh; \u0111\u1ea3o h\u01b0\u1edbng m\u1ed7i l\u01b0\u1ee3t \u0111\u1ec3 tr\u00e1nh \u201cv\u00e2n m\u01b0a\u201d.<\/p>\n<h2 id=\"toc-4-quy-trinh-dat-be-mat-mo-dong-nhat-tung-buoc\">Quy tr\u00ecnh \u0111\u1ea1t b\u1ec1 m\u1eb7t m\u1edd \u0111\u1ed3ng nh\u1ea5t: t\u1eebng b\u01b0\u1edbc<\/h2>\n<p>1) Ti\u1ec1n x\u1eed l\u00fd<br \/>\n&#8211; T\u1ea9y d\u1ea7u b\u1eb1ng ki\u1ec1m nh\u1eb9 (pH 10\u201312), tr\u00e1ng s\u1ea1ch; lo\u1ea1i b\u1ecf nh\u00e3n d\u00e1n\/keo.<br \/>\n&#8211; Che ch\u1eafn (masking) khu v\u1ef1c kh\u00f4ng phun b\u1eb1ng b\u0103ng keo PU, n\u00fat silicon (l\u1ed7 ren).  <\/p>\n<p>2) Ch\u1ecdn h\u1ea1t v\u00e0 test nhanh<br \/>\n&#8211; T\u1ea1o 2\u20133 coupon 100\u00d7100 mm v\u1edbi c\u1ee1 h\u1ea1t\/\u00e1p l\u1ef1c kh\u00e1c nhau; \u0111o Ra, \u0111\u00e1nh gi\u00e1 \u0111\u1ed9 \u0111\u1ed3ng \u0111\u1ec1u v\u00e0 m\u00e0u.<br \/>\n&#8211; Kh\u00f3a tham s\u1ed1 qua m\u1eabu chu\u1ea9n \u0111\u00e3 duy\u1ec7t.<\/p>\n<p>3) Phun th\u00f4 (n\u1ebfu c\u1ea7n)<br \/>\n&#8211; D\u00f9ng alumina\/garnet \u0111\u1ec3 g\u1ee1 scale, v\u1ea9y h\u00e0n; kh\u00f4ng \u201c\u0111\u00e1nh\u201d qu\u00e1 k\u1ef9 tr\u00ean t\u1ea5m m\u1ecfng \u0111\u1ec3 tr\u00e1nh bi\u1ebfn d\u1ea1ng.<\/p>\n<p>4) Phun tinh t\u1ea1o satin<br \/>\n&#8211; \u0110\u1ed5i sang bi th\u1ee7y tinh\/g\u1ed1m; ki\u1ec3m so\u00e1t \u00e1p l\u1ef1c 3,5\u20135,0 bar, kho\u1ea3ng c\u00e1ch 200 mm, ch\u1ed3ng l\u1edbp 40%; gi\u1eef nhi\u1ec7t b\u1ec1 m\u1eb7t m\u00e1t tay.<br \/>\n&#8211; V\u1edbi phun \u01b0\u1edbt: c\u00f9ng c\u1ee1 h\u1ea1t s\u1ebd cho Ra th\u1ea5p h\u01a1n ~10\u201320%; \u0111i\u1ec1u ch\u1ec9nh \u00e1p v\u00e0 t\u1ed1c \u0111\u1ed9 \u0111\u1ec3 \u0111\u1ea1t Ra m\u1ee5c ti\u00eau.<\/p>\n<p>5) L\u00e0m s\u1ea1ch sau phun<br \/>\n&#8211; Th\u1ed5i kh\u00ed s\u1ea1ch (l\u1ecdc d\u1ea7u\/n\u01b0\u1edbc), r\u1eeda n\u01b0\u1edbc kh\u1eed ion (DI) n\u1ebfu m\u00f4i tr\u01b0\u1eddng bi\u1ec3n\/ngo\u00e0i tr\u1eddi, s\u1ea5y kh\u00f4 ngay.  <\/p>\n<p>6) Th\u1ee5 \u0111\u1ed9ng h\u00f3a (khuy\u00ean d\u00f9ng)<br \/>\n&#8211; Passivation theo ASTM A967: dung d\u1ecbch axit citric 4\u201310% \u1edf 49\u201360\u00b0C trong 20\u201330 ph\u00fat; tr\u00e1ng DI, s\u1ea5y.<br \/>\n&#8211; Ki\u1ec3m tra nhi\u1ec5m s\u1eaft t\u1ef1 do b\u1eb1ng th\u1eed CuSO4 theo ASTM A380 (khi y\u00eau c\u1ea7u cao).<\/p>\n<p>7) Ki\u1ec3m tra ch\u1ea5t l\u01b0\u1ee3ng<br \/>\n&#8211; \u0110o Ra b\u1eb1ng m\u00e1y \u0111o nh\u00e1m ti\u1ebfp x\u00fac (ISO 4287); ki\u1ec3m tra gloss n\u1ebfu c\u00f3 y\u00eau c\u1ea7u th\u1ea9m m\u1ef9.<br \/>\n&#8211; So m\u00e0u\/\u0111\u1ed9 \u0111\u1ed3ng \u0111\u1ec1u v\u1edbi coupon \u0111\u00e3 duy\u1ec7t d\u01b0\u1edbi \u00e1nh s\u00e1ng 500\u20131000 lux.<\/p>\n<p>8) \u0110\u00f3ng g\u00f3i<br \/>\n&#8211; B\u1ecdc gi\u1ea5y trung t\u00ednh kh\u00f4ng ch\u1ee9a clo, t\u00fai PE s\u1ea1ch; tr\u00e1nh ti\u1ebfp x\u00fac th\u00e9p carbon trong v\u1eadn chuy\u1ec3n\/l\u01b0u kho.<\/p>\n<h2 id=\"toc-5-kiem-soat-chat-luong-va-phep-thu-nen-ap-dung\">Ki\u1ec3m so\u00e1t ch\u1ea5t l\u01b0\u1ee3ng v\u00e0 ph\u00e9p th\u1eed n\u00ean \u00e1p d\u1ee5ng<\/h2>\n<p>&#8211; \u0110\u1ed9 nh\u00e1m: Ra, Rz theo ISO 4287; 3 \u0111i\u1ec3m \u0111o\/m\u00b2.<br \/>\n&#8211; Mu\u1ed1i h\u00f2a tan: test Bresle (ISO 8502-6\/9) n\u1ebfu chu\u1ea9n b\u1ecb s\u01a1n \u1edf m\u00f4i tr\u01b0\u1eddng bi\u1ec3n.<br \/>\n&#8211; Nhi\u1ec5m s\u1eaft: th\u1eed CuSO4 (ASTM A380) ho\u1eb7c test nhanh b\u1ec1 m\u1eb7t b\u1eb1ng gi\u1ea5y chuy\u00ean d\u1ee5ng.<br \/>\n&#8211; M\u1eabu chu\u1ea9n: l\u01b0u gi\u1eef coupon v\u00e0 nh\u1eadt k\u00fd tham s\u1ed1 (\u00e1p l\u1ef1c, c\u1ee1 h\u1ea1t, s\u1ed1 chu k\u1ef3 t\u00e1i s\u1eed d\u1ee5ng).<br \/>\n&#8211; H\u1ea1t m\u00e0i: ki\u1ec3m tra \u0111\u1ed9 \u1ea9m <0,5%; l\u1ecdc lo\u1ea1i m\u1ea1t v\u1ee1 \u0111\u1ecbnh k\u1ef3; v\u1edbi bi th\u1ee7y tinh\/g\u1ed1m, thay m\u1edbi khi t\u1ef7 l\u1ec7 h\u1ea1t v\u1ee1 >30%.<\/p>\n<h2 id=\"toc-6-loi-thuong-gap-va-cach-khac-phuc\">L\u1ed7i th\u01b0\u1eddng g\u1eb7p v\u00e0 c\u00e1ch kh\u1eafc ph\u1ee5c<\/h2>\n<p>&#8211; B\u1ec1 m\u1eb7t loang\/\u201c\u0111\u00e1m m\u00e2y\u201d: t\u1ed1c \u0111\u1ed9 tay kh\u00f4ng \u0111\u1ec1u ho\u1eb7c \u00e1p l\u1ef1c dao \u0111\u1ed9ng. Kh\u1eafc ph\u1ee5c: c\u1ed1 \u0111\u1ecbnh \u00e1p l\u1ef1c; d\u00f9ng robot\/rail ho\u1eb7c jig \u0111\u1ec3 gi\u1eef qu\u1ef9 \u0111\u1ea1o \u1ed5n \u0111\u1ecbnh.<br \/>\n&#8211; S\u1ecdc ch\u1ed3ng l\u1edbp: ch\u1ed3ng l\u1ea5p qu\u00e1 th\u1ea5p ho\u1eb7c g\u00f3c phun h\u1eb9p. Kh\u1eafc ph\u1ee5c: t\u0103ng overlap l\u00ean 40\u201350%; \u0111\u1ed5i g\u00f3c.<br \/>\n&#8211; \u201cH\u1ea1t cam\u201d\/th\u00f4 r\u00e1p: h\u1ea1t qu\u00e1 l\u1edbn ho\u1eb7c \u00e1p qu\u00e1 cao. Kh\u1eafc ph\u1ee5c: gi\u1ea3m 1 c\u1ee1 h\u1ea1t ho\u1eb7c gi\u1ea3m 0,5\u20131 bar.<br \/>\n&#8211; Nhi\u1ec5m s\u1eaft\/r\u1ec9 n\u00e2u s\u1edbm: d\u00f9ng nh\u1ea7m bi th\u00e9p carbon, khoang phun d\u00f9ng chung th\u00e9p \u0111en. Kh\u1eafc ph\u1ee5c: t\u00e1ch khu v\u1ef1c\/ph\u1ec5u ch\u1ee9a; passivation theo ASTM A967.<br \/>\n&#8211; Bi\u1ebfn d\u1ea1ng t\u1ea5m m\u1ecfng: n\u0103ng l\u01b0\u1ee3ng phun l\u1edbn g\u00e2y \u1ee9ng su\u1ea5t. Kh\u1eafc ph\u1ee5c: gi\u1ea3m \u00e1p, t\u0103ng kho\u1ea3ng c\u00e1ch, chuy\u1ec3n sang phun \u01b0\u1edbt, ho\u1eb7c k\u00ea \u0111\u1ee1 ch\u1ed1ng v\u00f5ng.<\/p>\n<h2 id=\"toc-7-ung-dung-tieu-bieu\">\u1ee8ng d\u1ee5ng ti\u00eau bi\u1ec3u<\/h2>\n<p>&#8211; Ki\u1ebfn tr\u00fac \u2013 n\u1ed9i ngo\u1ea1i th\u1ea5t: v\u00e1ch, tay v\u1ecbn, m\u1eb7t d\u1ef1ng, h\u1ed9p k\u1ef9 thu\u1eadt (satin \u0111\u1ec1u, ch\u1ed1ng l\u00f3a).<br \/>\n&#8211; Th\u1ef1c ph\u1ea9m \u2013 d\u01b0\u1ee3c: v\u1ecf m\u00e1y, khung \u0111\u1ee1 ngo\u00e0i; kh\u00f4ng d\u00f9ng cho b\u1ec1 m\u1eb7t ti\u1ebfp x\u00fac tr\u1ef1c ti\u1ebfp s\u1ea3n ph\u1ea9m n\u1ebfu ch\u01b0a \u0111\u00e1nh gi\u00e1 v\u1ec7 sinh.<br \/>\n&#8211; H\u00e0ng h\u1ea3i\/ngo\u00e0i tr\u1eddi: gi\u1ea3m ch\u00f3i, \u0111\u1ed3ng th\u1eddi passivation \u0111\u1ec3 ch\u1ed1ng tea-staining.<br \/>\n&#8211; C\u01a1 kh\u00ed ch\u00ednh x\u00e1c: lo\u1ea1i v\u1ebft nhi\u1ec7t m\u00e0u TIG, \u0111\u1ed3ng b\u1ed9 m\u00e0u chi ti\u1ebft l\u00f4 nh\u1ecf.<br \/>\n&#8211; Tr\u01b0\u1edbc khi s\u01a1n\/ph\u1ee7: t\u1ea1o nh\u00e1m ki\u1ec3m so\u00e1t cho s\u01a1n epoxy, s\u01a1n b\u1ed9t, PVD, keo d\u00e1n.<\/p>\n<h2 id=\"toc-8-chi-phi-nang-suat-va-an-toan-moi-truong\">Chi ph\u00ed, n\u0103ng su\u1ea5t v\u00e0 an to\u00e0n m\u00f4i tr\u01b0\u1eddng<\/h2>\n<p>&#8211; N\u0103ng su\u1ea5t: phun b\u00e1nh c\u00f4ng t\u00e1c v\u1edbi bi inox cho linh ki\u1ec7n h\u00e0ng lo\u1ea1t; phun kh\u00ed n\u00e9n ph\u00f9 h\u1ee3p \u0111\u01a1n chi\u1ebfc\/t\u1ea5m l\u1edbn.<br \/>\n&#8211; Tu\u1ed5i th\u1ecd h\u1ea1t m\u00e0i (tham kh\u1ea3o): bi inox 1.000\u20133.000 chu k\u1ef3; bi g\u1ed1m 100\u2013200; bi th\u1ee7y tinh 20\u201330; alumina 5\u201320 (t\u00f9y \u00e1p v\u00e0 thu h\u1ed3i).<br \/>\n&#8211; Thu h\u1ed3i\/b\u1ee5i: d\u00f9ng bu\u1ed3ng k\u00edn c\u00f3 cyclone + cartridge filter; phun \u01b0\u1edbt gi\u1ea3m b\u1ee5i \u0111\u1ebfn m\u1ee9c t\u1ed1i thi\u1ec3u.<br \/>\n&#8211; An to\u00e0n silica: tr\u00e1nh c\u00e1t ch\u1ee9a silica t\u1ef1 do; tu\u00e2n th\u1ee7 ti\u00eau chu\u1ea9n OSHA v\u1ec1 silica h\u00f4 h\u1ea5p (PEL 50 \u00b5g\/m\u00b3 TWA) v\u00e0 th\u00f4ng gi\u00f3, PPE \u0111\u1ea1t chu\u1ea9n.<br \/>\n&#8211; Ch\u1ea5t th\u1ea3i: ph\u00e2n lo\u1ea1i b\u00f9n\/h\u1ea1t \u0111\u00e3 d\u00f9ng; n\u1ebfu d\u00ednh kim lo\u1ea1i n\u1eb7ng t\u1eeb n\u1ec1n c\u0169 c\u1ea7n x\u1eed l\u00fd theo quy \u0111\u1ecbnh m\u00f4i tr\u01b0\u1eddng.<\/p>\n<h2 id=\"toc-9-phun-bi-tang-ben-shot-peening-cho-inox-khi-nao-dun\">Phun bi t\u0103ng b\u1ec1n (shot peening) cho inox: khi n\u00e0o d\u00f9ng?<\/h2>\n<p>&#8211; M\u1ee5c ti\u00eau: t\u1ea1o \u1ee9ng su\u1ea5t n\u00e9n b\u1ec1 m\u1eb7t, t\u0103ng tu\u1ed5i th\u1ecd m\u1ecfi cho l\u00f2 xo inox, tr\u1ee5c, c\u00e1nh b\u01a1m, c\u00e1nh turbine.<br \/>\n&#8211; Tham s\u1ed1: ki\u1ec3m so\u00e1t Almen intensity v\u00e0 \u0111\u1ed9 ph\u1ee7 100\u2013200%. Tr\u00ean inox m\u1ecfng, c\u01b0\u1eddng \u0111\u1ed9 A 0,006\u20130,012 th\u01b0\u1eddng g\u1eb7p; chi ti\u1ebft d\u00e0y c\u00f3 th\u1ec3 0,012\u20130,016.<br \/>\n&#8211; L\u01b0u \u00fd: \u0111\u1ed9 nh\u00e1m t\u0103ng; n\u1ebfu y\u00eau c\u1ea7u satin \u0111\u1eb9p, c\u1ea7n c\u00e2n b\u1eb1ng gi\u1eefa peening v\u00e0 th\u1ea9m m\u1ef9, ho\u1eb7c peen tr\u01b0\u1edbc r\u1ed3i bead-blast tinh nh\u1eb9. D\u00f9ng bi inox\/bi g\u1ed1m \u0111\u1ec3 tr\u00e1nh nhi\u1ec5m s\u1eaft.<\/p>\n<h2 id=\"toc-10-faq-nhanh\">FAQ nhanh<\/h2>\n<p>&#8211; Sau phun c\u00f3 c\u1ea7n th\u1ee5 \u0111\u1ed9ng h\u00f3a?<br \/>\n  + N\u00ean, nh\u1ea5t l\u00e0 m\u00f4i tr\u01b0\u1eddng ngo\u00e0i tr\u1eddi\/bi\u1ec3n. ASTM A967 (axit citric) an to\u00e0n v\u00e0 hi\u1ec7u qu\u1ea3.<br \/>\n&#8211; C\u00f3 th\u1ec3 \u0111\u1ea1t Ra <1,0 \u00b5m b\u1eb1ng phun?  \n  + C\u00f3, v\u1edbi bi th\u1ee7y tinh\/g\u1ed1m h\u1ea1t m\u1ecbn v\u00e0 phun \u01b0\u1edbt; tuy nhi\u00ean \u0111\u1ed3ng nh\u1ea5t ph\u1ee5 thu\u1ed9c tay ngh\u1ec1 v\u00e0 thi\u1ebft b\u1ecb.  \n- Phun c\u00f3 che \u0111\u01b0\u1ee3c x\u01b0\u1edbc s\u00e2u kh\u00f4ng?  \n  + X\u01b0\u1edbc >50\u201380 \u00b5m th\u01b0\u1eddng v\u1eabn \u201cin b\u00f3ng\u201d. C\u1ea7n m\u00e0i ti\u1ec1n x\u1eed l\u00fd tr\u01b0\u1edbc.<br \/>\n&#8211; B\u1ec1 m\u1eb7t phun c\u00f3 b\u00e1m b\u1ea9n nhanh h\u01a1n b\u00f3ng g\u01b0\u01a1ng?<br \/>\n  + \u0110\u00fang, v\u00ec nh\u00e1m cao h\u01a1n. Gi\u1ea3i ph\u00e1p: ch\u1ecdn Ra ph\u00f9 h\u1ee3p v\u00e0 passivation t\u1ed1t.<\/p>\n<h2 id=\"toc-11-nguon-tham-khao\">Ngu\u1ed3n tham kh\u1ea3o<\/h2>\n<p>&#8211; ASTM A380\/A380M \u2013 Standard Practice for Cleaning, Descaling, and Passivation of Stainless Steel Parts<br \/>\n&#8211; ASTM A967\/A967M \u2013 Standard Specification for Chemical Passivation Treatments for Stainless Steel Parts<br \/>\n&#8211; SSPC-SP16 \u2013 Commercial Blast Cleaning of Non-Ferrous Metals (stainless, galvanized, aluminum)<br \/>\n&#8211; Nickel Institute: Guidelines for the Welded Fabrication of Nickel-Containing Stainless Steels and Cleaning\/Finishing resources (nickelinstitute.org)<br \/>\n&#8211; British Stainless Steel Association (BSSA): Bead blasting stainless steel; Surface finishes (bssa.org.uk)<br \/>\n&#8211; OSHA 29 CFR 1910.1053\/1926.1153 \u2013 Respirable Crystalline Silica Standard<\/p>\n<h2 id=\"toc-12-ket-luan-va-khuyen-nghi-thuc-hanh\">K\u1ebft lu\u1eadn v\u00e0 khuy\u1ebfn ngh\u1ecb th\u1ef1c h\u00e0nh<\/h2>\n<p>&#8211; \u0110\u1ec3 c\u00f3 b\u1ec1 m\u1eb7t m\u1edd \u0111\u1ed3ng nh\u1ea5t tr\u00ean inox, h\u00e3y \u01b0u ti\u00ean bi th\u1ee7y tinh\/g\u1ed1m v\u1edbi \u00e1p l\u1ef1c trung b\u00ecnh, qu\u1ef9 \u0111\u1ea1o \u0111\u1ec1u v\u00e0 ki\u1ec3m so\u00e1t ch\u1ed3ng l\u1edbp.<br \/>\n&#8211; D\u00f9ng h\u1ea1t g\u00f3c c\u1ea1nh (alumina\/garnet) khi c\u1ea7n t\u0103ng nh\u00e1m b\u00e1m ph\u1ee7, sau \u0111\u00f3 tinh l\u1ea1i n\u1ebfu y\u00eau c\u1ea7u th\u1ea9m m\u1ef9.<br \/>\n&#8211; Tr\u00e1nh m\u1ecdi ngu\u1ed3n nhi\u1ec5m s\u1eaft; t\u00e1ch khu v\u1ef1c inox; passivation theo ASTM A967 \u0111\u1ec3 \u1ed5n \u0111\u1ecbnh ch\u1ed1ng \u0103n m\u00f2n.<br \/>\n&#8211; Ch\u1ed1t m\u1eabu chu\u1ea9n ngay t\u1eeb \u0111\u1ea7u; \u0111o Ra\/ki\u1ec3m mu\u1ed1i \u0111\u00fang chu\u1ea9n \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o t\u00e1i l\u1eadp ch\u1ea5t l\u01b0\u1ee3ng.<\/p>\n<p>C\u1ea7n t\u01b0 v\u1ea5n ch\u1ecdn h\u1ea1t, th\u00f4ng s\u1ed1 v\u00e0 gia c\u00f4ng m\u1eabu chu\u1ea9n cho d\u1ef1 \u00e1n t\u1ea1i H\u00e0 N\u1ed9i v\u00e0 mi\u1ec1n B\u1eafc? Li\u00ean h\u1ec7 Inox Cuong Thinh \u0111\u1ec3 \u0111\u01b0\u1ee3c k\u1ef9 s\u01b0 \u1ee9ng d\u1ee5ng 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>So s\u00e1nh phun c\u00e1t v\u00e0 phun bi inox, ch\u1ecdn h\u1ea1t m\u00e0i, th\u00f4ng s\u1ed1 v\u1eadn h\u00e0nh v\u00e0 quy tr\u00ecnh chu\u1ea9n \u0111\u1ec3 \u0111\u1ea1t b\u1ec1 m\u1eb7t m\u1edd \u0111\u1ed3ng nh\u1ea5t, s\u1ea1ch nhi\u1ec5m s\u1eaft, s\u1eb5n s\u00e0ng s\u1eed d\u1ee5ng.<\/p>\n","protected":false},"author":7,"featured_media":1033,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[23],"tags":[],"class_list":["post-1420","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\/1420","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=1420"}],"version-history":[{"count":0,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/posts\/1420\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/media\/1033"}],"wp:attachment":[{"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/media?parent=1420"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/categories?post=1420"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/tags?post=1420"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}