{"id":7180,"date":"2024-12-02T04:26:31","date_gmt":"2024-12-02T04:26:31","guid":{"rendered":"https:\/\/protech-transfer.com\/2024\/12\/02\/discoloration-the-firestain-problem-in-sterling-silver\/"},"modified":"2025-12-24T13:28:35","modified_gmt":"2025-12-24T13:28:35","slug":"discoloration-the-firestain-problem-in-sterling-silver","status":"publish","type":"post","link":"https:\/\/protech-transfer.com\/vi\/2024\/12\/02\/discoloration-the-firestain-problem-in-sterling-silver\/","title":{"rendered":"S\u1ef1 \u0111\u1ed5i m\u00e0u: V\u1ea5n \u0111\u1ec1 Firestain trong b\u1ea1c Sterling"},"content":{"rendered":"<h3><b>Firestain l\u00e0 g\u00ec?<\/b><\/h3>\n<p>Fire Stain l\u00e0 m\u1ed9t l\u1ed7i \u0111\u1ed5i m\u00e0u ph\u1ed5 bi\u1ebfn xu\u1ea5t hi\u1ec7n tr\u00ean trang s\u1ee9c b\u1ea1c sterling (Ag925). V\u1ea5n \u0111\u1ec1 n\u00e0y x\u1ea3y ra khi h\u00e0m l\u01b0\u1ee3ng \u0111\u1ed3ng trong b\u1ea1c b\u1ecb oxi ho\u00e1 trong qu\u00e1 tr\u00ecnh ngu\u1ed9i sau khi \u0111\u00fac. K\u1ebft qu\u1ea3 l\u00e0 xu\u1ea5t hi\u1ec7n c\u00e1c v\u00f9ng x\u00e1m ho\u1eb7c t\u1ed1i tr\u00ean b\u1ec1 m\u1eb7t, r\u1ea5t kh\u00f3 lo\u1ea1i b\u1ecf ngay c\u1ea3 khi \u0111\u00e1nh b\u00f3ng.<br \/>\nVi\u1ec7c hi\u1ec3u r\u00f5 nguy\u00ean nh\u00e2n g\u00e2y ra Firestain l\u00e0 \u0111i\u1ec1u quan tr\u1ecdng \u0111\u1ed1i v\u1edbi th\u1ee3 kim ho\u00e0n v\u00e0 nh\u00e0 s\u1ea3n xu\u1ea5t mu\u1ed1n c\u1ea3i thi\u1ec7n ch\u1ea5t l\u01b0\u1ee3ng s\u1ea3n ph\u1ea9m b\u1ea1c c\u1ee7a h\u1ecd. Protech Transfer cung c\u1ea5p c\u00e1c thi\u1ebft b\u1ecb \u0111\u00fac hi\u1ec7n \u0111\u1ea1i c\u00f3 th\u1ec3 gi\u00fap tr\u00e1nh nh\u1eefng v\u1ea5n \u0111\u1ec1 n\u00e0y trong qu\u00e1 tr\u00ecnh s\u1ea3n xu\u1ea5t.<\/p>\n<h3>Nguy\u00ean nh\u00e2n g\u00e2y Firestain trong b\u1ea1c Sterling<\/h3>\n<ol>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-family: arial, helvetica, sans-serif;\"><b>Ti\u1ebfp x\u00fac v\u1edbi oxy<\/b><b><br \/>\n<\/b>Khi b\u1ea1c n\u00f3ng ti\u1ebfp x\u00fac v\u1edbi kh\u00f4ng kh\u00ed trong ho\u1eb7c sau c\u00f4ng \u0111o\u1ea1n \u0111\u00fac, b\u1ea1c h\u1ea5p th\u1ee5 oxy v\u00e0 truy\u1ec1n oxy v\u00e0o \u0111\u1ed3ng. S\u1ef1 ti\u1ebfp x\u00fac n\u00e0y g\u00e2y ra hi\u1ec7n t\u01b0\u1ee3ng oxi ho\u00e1 b\u00ean trong c\u1ee7a \u0111\u1ed3ng, d\u1eabn \u0111\u1ebfn Fire Stain. Vi\u1ec7c s\u1eed d\u1ee5ng c\u00e1c m\u00e1y m\u00f3c t\u1eeb Protech Transfer c\u00f3 kh\u1ea3 n\u0103ng ki\u1ec3m so\u00e1t m\u00f4i tr\u01b0\u1eddng \u0111\u00fac c\u00f3 th\u1ec3 gi\u00fap gi\u1ea3m thi\u1ec3u v\u1ea5n \u0111\u1ec1 n\u00e0y.<br \/>\n<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-family: arial, helvetica, sans-serif;\"><b>V\u1ea5n \u0111\u1ec1 v\u1ec1 l\u00e0m ngu\u1ed9i<\/b><b><br \/>\n<\/b>Ph\u01b0\u01a1ng ph\u00e1p l\u00e0m ngu\u1ed9i kh\u00f4ng ph\u00f9 h\u1ee3p l\u00e0m t\u0103ng kh\u1ea3 n\u0103ng oxi ho\u00e1. \u0110\u1ec3 v\u1eadt \u0111\u00fac ti\u1ebfp x\u00fac v\u1edbi kh\u00f4ng kh\u00ed qu\u00e1 l\u00e2u ho\u1eb7c l\u1ea5y ra kh\u1ecfi bu\u1ed3ng nung qu\u00e1 s\u1edbm \u0111\u1ec1u l\u00e0m t\u0103ng nguy c\u01a1 Fire Stain.<br \/>\n<\/span><\/li>\n<\/ol>\n<h3>C\u00e1ch tr\u00e1nh Firestain tr\u00ean trang s\u1ee9c b\u1ea1c<\/h3>\n<p>\u0110\u1ec3 ng\u0103n ng\u1eeba v\u1ebft \u1ed1 do l\u1eeda, h\u00e3y c\u00e2n nh\u1eafc c\u00e1c k\u1ef9 thu\u1eadt hi\u1ec7u qu\u1ea3 sau:<\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-family: arial, helvetica, sans-serif;\"><b>N\u1ea5u ch\u1ea3y d\u01b0\u1edbi ch\u00e2n kh\u00f4ng<br \/>\n<\/b>N\u1ea5u ch\u1ea3y b\u1ea1c trong m\u00f4i tr\u01b0\u1eddng ch\u00e2n kh\u00f4ng lo\u1ea1i b\u1ecf oxy, r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 ng\u0103n Firestain h\u00ecnh th\u00e0nh trong qu\u00e1 tr\u00ecnh \u0111\u00fac. Thi\u1ebft b\u1ecb n\u1ea5u ch\u1ea3y ti\u00ean ti\u1ebfn t\u1eeb Protech Transfer (<a href=\"https:\/\/indutherm.de\/en\/\" target=\"_blank\" rel=\"noopener\">indutherm.de<\/a>) \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 h\u1ed7 tr\u1ee3 hi\u1ec7u qu\u1ea3 ph\u01b0\u01a1ng ph\u00e1p n\u00e0y.<br \/>\n<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-family: arial, helvetica, sans-serif;\"><b>K\u1ef9 thu\u1eadt l\u00e0m ngu\u1ed9i \u0111\u00fang c\u00e1ch<br \/>\n<\/b>Gi\u1eef flask trong bu\u1ed3ng kho\u1ea3ng 4 ph\u00fat v\u00e0 s\u1eed d\u1ee5ng kh\u00ed b\u1ea3o v\u1ec7 nh\u01b0 argon ho\u1eb7c nitrogen khi l\u00e0m ngu\u1ed9i c\u00f3 th\u1ec3 gi\u1ea3m \u0111\u00e1ng k\u1ec3 s\u1ef1 oxi ho\u00e1. Ngo\u00e0i ra, d\u1eadp flask v\u00e0o n\u01b0\u1edbc ngay sau khi l\u1ea5y kh\u1ecfi bu\u1ed3ng nung c\u0169ng gi\u00fap h\u1ea1n ch\u1ebf Fire Stain.<br \/>\n<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-family: arial, helvetica, sans-serif;\"><b>H\u1ee3p kim ch\u1ed1ng Firestain<br \/>\n<\/b>S\u1eed d\u1ee5ng c\u00e1c h\u1ee3p kim ch\u1ed1ng Firestain c\u00f3 ch\u1ee9a c\u00e1c nguy\u00ean t\u1ed1 nh\u01b0 k\u1ebdm ho\u1eb7c silicon c\u00f3 th\u1ec3 ng\u0103n \u0111\u1ed3ng b\u1ecb oxi ho\u00e1 ho\u00e0n to\u00e0n. C\u00e1c gi\u1ea3i ph\u00e1p \u0111\u00fac c\u1ee7a Protech Transfer h\u1ed7 tr\u1ee3 t\u1ed1t nh\u1eefng v\u1eadt li\u1ec7u n\u00e0y, gi\u00fap th\u1ee3 kim ho\u00e0n t\u1ea1o ra c\u00e1c s\u1ea3n ph\u1ea9m \u00edt b\u1ecb \u0111\u1ed5i m\u00e0u h\u01a1n.<br \/>\n<\/span><\/li>\n<\/ul>\n<h3>K\u1ebft lu\u1eadn<\/h3>\n<p>B\u1eb1ng c\u00e1ch hi\u1ec3u nguy\u00ean nh\u00e2n v\u00e0 ph\u01b0\u01a1ng ph\u00e1p ph\u00f2ng tr\u00e1nh Firestain, th\u1ee3 kim ho\u00e0n c\u00f3 th\u1ec3 n\u00e2ng cao ch\u1ea5t l\u01b0\u1ee3ng trang s\u1ee9c b\u1ea1c sterling. Vi\u1ec7c s\u1eed d\u1ee5ng m\u00e1y m\u00f3c ti\u00ean ti\u1ebfn t\u1eeb Protech Transfer v\u00e0 \u00e1p d\u1ee5ng c\u00e1c k\u1ef9 thu\u1eadt \u0111\u00fac ph\u00f9 h\u1ee3p c\u00f3 th\u1ec3 mang l\u1ea1i k\u1ebft qu\u1ea3 t\u1ed1t h\u01a1n, gi\u1ea3m thi\u1ec3u s\u1ef1 xu\u1ea5t hi\u1ec7n c\u1ee7a l\u1ed7i \u0111\u1ed5i m\u00e0u n\u00e0y.<\/p>\n<p>&nbsp;<\/p>\n<p><strong>M\u00c1Y M\u00d3C T\u1ed0T NH\u1ea4T \u2013 D\u1ecaCH V\u1ee4 T\u1ed0T NH\u1ea4T<\/strong><br \/>\n\u0110\u01b0\u1eddng d\u00e2y n\u00f3ng b\u00e1n h\u00e0ng: +66 8 6332 9347<br \/>\nID LINE b\u00e1n h\u00e0ng: @pttsales<br \/>\n\u0110\u01b0\u1eddng d\u00e2y n\u00f3ng d\u1ecbch v\u1ee5 24\/7: +66 8 9227 9154<br \/>\nID LINE h\u1ed7 tr\u1ee3 d\u1ecbch v\u1ee5: @pttsupport<br \/>\n<a href=\"https:\/\/protech-transfer.com\/vi\/\" target=\"_blank\" rel=\"noopener\">Xem t\u1ea5t c\u1ea3 m\u00e1y m\u00f3c<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Firestain l\u00e0 g\u00ec? Fire Stain l\u00e0 m\u1ed9t l\u1ed7i \u0111\u1ed5i m\u00e0u ph\u1ed5 bi\u1ebfn xu\u1ea5t hi\u1ec7n tr\u00ean trang s\u1ee9c b\u1ea1c sterling (Ag925). V\u1ea5n \u0111\u1ec1 n\u00e0y x\u1ea3y ra khi h\u00e0m l\u01b0\u1ee3ng \u0111\u1ed3ng trong b\u1ea1c b\u1ecb oxi ho\u00e1 trong qu\u00e1 tr\u00ecnh ngu\u1ed9i sau khi \u0111\u00fac. K\u1ebft qu\u1ea3 l\u00e0 xu\u1ea5t hi\u1ec7n c\u00e1c v\u00f9ng x\u00e1m ho\u1eb7c t\u1ed1i tr\u00ean b\u1ec1 m\u1eb7t, r\u1ea5t kh\u00f3 lo\u1ea1i b\u1ecf ngay c\u1ea3 khi \u0111\u00e1nh b\u00f3ng. Vi\u1ec7c hi\u1ec3u r\u00f5 nguy\u00ean nh\u00e2n g\u00e2y ra Firestain l\u00e0 \u0111i\u1ec1u quan tr\u1ecdng \u0111\u1ed1i v\u1edbi th\u1ee3 kim ho\u00e0n v\u00e0 nh\u00e0 s\u1ea3n xu\u1ea5t mu\u1ed1n c\u1ea3i thi\u1ec7n ch\u1ea5t l\u01b0\u1ee3ng s\u1ea3n ph\u1ea9m b\u1ea1c c\u1ee7a h\u1ecd. Protech Transfer cung c\u1ea5p c\u00e1c thi\u1ebft b\u1ecb \u0111\u00fac hi\u1ec7n \u0111\u1ea1i c\u00f3 th\u1ec3 gi\u00fap tr\u00e1nh nh\u1eefng v\u1ea5n \u0111\u1ec1 n\u00e0y trong qu\u00e1 tr\u00ecnh s\u1ea3n xu\u1ea5t. Nguy\u00ean nh\u00e2n g\u00e2y Firestain trong b\u1ea1c Sterling Ti\u1ebfp x\u00fac v\u1edbi oxy Khi b\u1ea1c n\u00f3ng ti\u1ebfp x\u00fac v\u1edbi kh\u00f4ng kh\u00ed trong ho\u1eb7c sau c\u00f4ng \u0111o\u1ea1n \u0111\u00fac, b\u1ea1c h\u1ea5p th\u1ee5 oxy v\u00e0 truy\u1ec1n oxy v\u00e0o \u0111\u1ed3ng. S\u1ef1 ti\u1ebfp x\u00fac n\u00e0y g\u00e2y ra hi\u1ec7n t\u01b0\u1ee3ng oxi ho\u00e1 b\u00ean trong c\u1ee7a \u0111\u1ed3ng, d\u1eabn \u0111\u1ebfn Fire Stain. Vi\u1ec7c s\u1eed d\u1ee5ng c\u00e1c m\u00e1y m\u00f3c t\u1eeb Protech Transfer c\u00f3 kh\u1ea3 n\u0103ng ki\u1ec3m so\u00e1t m\u00f4i tr\u01b0\u1eddng \u0111\u00fac c\u00f3 th\u1ec3 gi\u00fap gi\u1ea3m thi\u1ec3u v\u1ea5n \u0111\u1ec1 n\u00e0y. V\u1ea5n \u0111\u1ec1 v\u1ec1 l\u00e0m ngu\u1ed9i Ph\u01b0\u01a1ng ph\u00e1p l\u00e0m ngu\u1ed9i kh\u00f4ng ph\u00f9 h\u1ee3p l\u00e0m t\u0103ng kh\u1ea3 n\u0103ng oxi ho\u00e1. \u0110\u1ec3 v\u1eadt \u0111\u00fac ti\u1ebfp x\u00fac v\u1edbi kh\u00f4ng kh\u00ed qu\u00e1 l\u00e2u ho\u1eb7c l\u1ea5y ra kh\u1ecfi bu\u1ed3ng nung qu\u00e1 s\u1edbm \u0111\u1ec1u l\u00e0m t\u0103ng nguy c\u01a1 Fire Stain. C\u00e1ch tr\u00e1nh Firestain tr\u00ean trang s\u1ee9c b\u1ea1c \u0110\u1ec3 ng\u0103n ng\u1eeba v\u1ebft \u1ed1 do l\u1eeda, h\u00e3y c\u00e2n nh\u1eafc c\u00e1c k\u1ef9 thu\u1eadt hi\u1ec7u qu\u1ea3 sau: N\u1ea5u ch\u1ea3y d\u01b0\u1edbi ch\u00e2n kh\u00f4ng N\u1ea5u ch\u1ea3y b\u1ea1c trong m\u00f4i tr\u01b0\u1eddng ch\u00e2n kh\u00f4ng lo\u1ea1i b\u1ecf oxy, r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 ng\u0103n Firestain h\u00ecnh th\u00e0nh trong qu\u00e1 tr\u00ecnh \u0111\u00fac. Thi\u1ebft b\u1ecb n\u1ea5u ch\u1ea3y ti\u00ean ti\u1ebfn t\u1eeb Protech Transfer (indutherm.de) \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 h\u1ed7 tr\u1ee3 hi\u1ec7u qu\u1ea3 ph\u01b0\u01a1ng ph\u00e1p n\u00e0y. K\u1ef9 thu\u1eadt l\u00e0m ngu\u1ed9i \u0111\u00fang c\u00e1ch Gi\u1eef flask trong bu\u1ed3ng kho\u1ea3ng 4 ph\u00fat v\u00e0 s\u1eed d\u1ee5ng kh\u00ed b\u1ea3o v\u1ec7 nh\u01b0 argon ho\u1eb7c nitrogen khi l\u00e0m ngu\u1ed9i c\u00f3 th\u1ec3 gi\u1ea3m \u0111\u00e1ng k\u1ec3 s\u1ef1 oxi ho\u00e1. Ngo\u00e0i ra, d\u1eadp flask v\u00e0o n\u01b0\u1edbc ngay sau khi l\u1ea5y kh\u1ecfi bu\u1ed3ng nung c\u0169ng gi\u00fap h\u1ea1n ch\u1ebf Fire Stain. H\u1ee3p kim ch\u1ed1ng Firestain S\u1eed d\u1ee5ng c\u00e1c h\u1ee3p kim ch\u1ed1ng Firestain c\u00f3 ch\u1ee9a c\u00e1c nguy\u00ean t\u1ed1 nh\u01b0 k\u1ebdm ho\u1eb7c silicon c\u00f3 th\u1ec3 ng\u0103n \u0111\u1ed3ng b\u1ecb oxi ho\u00e1 ho\u00e0n to\u00e0n. C\u00e1c gi\u1ea3i ph\u00e1p \u0111\u00fac c\u1ee7a Protech Transfer h\u1ed7 tr\u1ee3 t\u1ed1t nh\u1eefng v\u1eadt li\u1ec7u n\u00e0y, gi\u00fap th\u1ee3 kim ho\u00e0n t\u1ea1o ra c\u00e1c s\u1ea3n ph\u1ea9m \u00edt b\u1ecb \u0111\u1ed5i m\u00e0u h\u01a1n. K\u1ebft lu\u1eadn B\u1eb1ng c\u00e1ch hi\u1ec3u nguy\u00ean nh\u00e2n v\u00e0 ph\u01b0\u01a1ng ph\u00e1p ph\u00f2ng tr\u00e1nh Firestain, th\u1ee3 kim ho\u00e0n c\u00f3 th\u1ec3 n\u00e2ng cao ch\u1ea5t l\u01b0\u1ee3ng trang s\u1ee9c b\u1ea1c sterling. Vi\u1ec7c s\u1eed d\u1ee5ng m\u00e1y m\u00f3c ti\u00ean ti\u1ebfn t\u1eeb Protech Transfer v\u00e0 \u00e1p d\u1ee5ng c\u00e1c k\u1ef9 thu\u1eadt \u0111\u00fac ph\u00f9 h\u1ee3p c\u00f3 th\u1ec3 mang l\u1ea1i k\u1ebft qu\u1ea3 t\u1ed1t h\u01a1n, gi\u1ea3m thi\u1ec3u s\u1ef1 xu\u1ea5t hi\u1ec7n c\u1ee7a l\u1ed7i \u0111\u1ed5i m\u00e0u n\u00e0y. &nbsp; M\u00c1Y M\u00d3C T\u1ed0T NH\u1ea4T \u2013 D\u1ecaCH V\u1ee4 T\u1ed0T NH\u1ea4T \u0110\u01b0\u1eddng d\u00e2y n\u00f3ng b\u00e1n h\u00e0ng: +66 8 6332 9347 ID LINE b\u00e1n h\u00e0ng: @pttsales \u0110\u01b0\u1eddng d\u00e2y n\u00f3ng d\u1ecbch v\u1ee5 24\/7: +66 8 9227 9154 ID LINE h\u1ed7 tr\u1ee3 d\u1ecbch v\u1ee5: @pttsupport Xem t\u1ea5t c\u1ea3 m\u00e1y m\u00f3c<\/p>\n","protected":false},"author":3,"featured_media":7181,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[55],"tags":[],"class_list":["post-7180","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-bai-viet-ve-duc"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.9 - 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