{"id":16000,"date":"2024-09-07T09:00:00","date_gmt":"2024-09-07T01:00:00","guid":{"rendered":"https:\/\/www.witcoolmachining-com-608971.hostingersite.com\/?p=16000"},"modified":"2024-09-05T13:46:50","modified_gmt":"2024-09-05T05:46:50","slug":"passivation-metal-treatment","status":"publish","type":"post","link":"https:\/\/wit.cool\/vn\/passivation-metal-treatment\/","title":{"rendered":"Th\u1ee5 \u0111\u1ed9ng h\u00f3a: T\u0103ng c\u01b0\u1eddng \u0111\u1ed9 b\u1ec1n c\u1ee7a kim lo\u1ea1i v\u00e0 kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n"},"content":{"rendered":"

th\u1ee5 \u0111\u1ed9ng h\u00f3a <\/a>l\u00e0 m\u1ed9t qu\u00e1 tr\u00ecnh x\u1eed l\u00fd h\u00f3a h\u1ecdc quan tr\u1ecdng ch\u1ee7 y\u1ebfu \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 t\u0103ng kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n c\u1ee7a kim lo\u1ea1i, \u0111\u1eb7c bi\u1ec7t l\u00e0 th\u00e9p kh\u00f4ng g\u1ec9.<\/p>\n\n\n\n

Qu\u00e1 tr\u00ecnh n\u00e0y bao g\u1ed3m vi\u1ec7c t\u1ea1o ra m\u1ed9t l\u1edbp oxit b\u1ea3o v\u1ec7 tr\u00ean b\u1ec1 m\u1eb7t kim lo\u1ea1i, gi\u00fap gi\u1ea3m \u0111\u00e1ng k\u1ec3 kh\u1ea3 n\u0103ng ph\u1ea3n \u1ee9ng c\u1ee7a kim lo\u1ea1i v\u1edbi c\u00e1c y\u1ebfu t\u1ed1 m\u00f4i tr\u01b0\u1eddng.<\/p>\n\n\n\n

\"Process
<\/figcaption><\/figure>\n\n\n\n

\u0110\u1ecbnh ngh\u0129a v\u00e0 C\u01a1 ch\u1ebf<\/h2>\n\n\n\n

Ph\u01b0\u01a1ng ph\u00e1p n\u00e0y bao g\u1ed3m vi\u1ec7c x\u1eed l\u00fd b\u1ec1 m\u1eb7t kim lo\u1ea1i b\u1eb1ng axit \u0111\u1ec3 lo\u1ea1i b\u1ecf ch\u1ea5t g\u00e2y \u00f4 nhi\u1ec5m, gi\u00fap ph\u1ee5c h\u1ed3i l\u1edbp oxit m\u1ecfng b\u1ea3o v\u1ec7.<\/p>\n\n\n\n

L\u1edbp oxit n\u00e0y ho\u1ea1t \u0111\u1ed9ng nh\u01b0 m\u1ed9t r\u00e0o c\u1ea3n, ng\u0103n kh\u00f4ng cho kim lo\u1ea1i ph\u1ea3n \u1ee9ng v\u1edbi \u0111\u1ed9 \u1ea9m v\u00e0 oxy - nh\u1eefng t\u00e1c nh\u00e2n ch\u00ednh g\u00e2y ra s\u1ef1 \u0103n m\u00f2n.<\/p>\n\n\n\n

S\u1ef1 th\u1ee5 \u0111\u1ed9ng h\u00f3a l\u00e0 g\u00ec?<\/h2>\n\n\n\n

Th\u1ee5 \u0111\u1ed9ng h\u00f3a l\u00e0 m\u1ed9t qu\u00e1 tr\u00ecnh h\u00f3a h\u1ecdc \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 lo\u1ea1i b\u1ecf s\u1eaft t\u1ef1 do v\u00e0 c\u00e1c ch\u1ea5t g\u00e2y \u00f4 nhi\u1ec5m kh\u00e1c kh\u1ecfi b\u1ec1 m\u1eb7t kim lo\u1ea1i, \u0111\u1eb7c bi\u1ec7t l\u00e0 th\u00e9p kh\u00f4ng g\u1ec9. Trong qu\u00e1 tr\u00ecnh s\u1ea3n xu\u1ea5t, c\u00e1c b\u1ed9 ph\u1eadn kim lo\u1ea1i ti\u1ebfp x\u00fac v\u1edbi c\u00e1c th\u00e0nh ph\u1ea7n nh\u01b0 m\u1ee1, d\u1ea7u v\u00e0 c\u00e1c h\u1ea1t s\u1eaft, c\u00f3 th\u1ec3 g\u00e2y \u00f4 nhi\u1ec5m b\u1ec1 m\u1eb7t. Qu\u00e1 tr\u00ecnh th\u1ee5 \u0111\u1ed9ng h\u00f3a l\u00e0m s\u1ea1ch kim lo\u1ea1i v\u00e0 t\u1ea1o ra l\u1edbp oxit b\u1ea3o v\u1ec7 gi\u00fap t\u0103ng kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n.<\/p>\n\n\n\n

S\u1ef1 th\u1ee5 \u0111\u1ed9ng ho\u1ea1t \u0111\u1ed9ng nh\u01b0 th\u1ebf n\u00e0o<\/h2>\n\n\n\n

Ph\u01b0\u01a1ng ph\u00e1p x\u1eed l\u00fd n\u00e0y th\u01b0\u1eddng bao g\u1ed3m vi\u1ec7c nh\u00fang kim lo\u1ea1i v\u00e0o dung d\u1ecbch axit, nh\u01b0 axit nitric ho\u1eb7c axit citric, \u0111\u1ec3 lo\u1ea1i b\u1ecf c\u00e1c ch\u1ea5t g\u00e2y \u00f4 nhi\u1ec5m b\u1ec1 m\u1eb7t. Sau \u0111\u00e2y l\u00e0 b\u1ea3n ph\u00e2n t\u00edch \u0111\u01a1n gi\u1ea3n v\u1ec1 c\u00e1c b\u01b0\u1edbc li\u00ean quan \u0111\u1ebfn qu\u00e1 tr\u00ecnh th\u1ee5 \u0111\u1ed9ng h\u00f3a:<\/p>\n\n\n\n

    \n
  1. V\u1ec7 sinh:<\/strong> B\u1ec1 m\u1eb7t kim lo\u1ea1i \u0111\u01b0\u1ee3c l\u00e0m s\u1ea1ch k\u1ef9 l\u01b0\u1ee1ng \u0111\u1ec3 lo\u1ea1i b\u1ecf d\u1ea7u m\u1ee1, b\u1ee5i b\u1ea9n v\u00e0 c\u00e1c ch\u1ea5t g\u00e2y \u00f4 nhi\u1ec5m b\u1ec1 m\u1eb7t kh\u00e1c.<\/li>\n\n\n\n
  2. Axit<\/strong> B\u1ed3n t\u1eafm:<\/strong> Kim lo\u1ea1i \u0111\u00e3 \u0111\u01b0\u1ee3c l\u00e0m s\u1ea1ch s\u1ebd \u0111\u01b0\u1ee3c ng\u00e2m trong b\u1ec3 axit \u0111\u1ec3 lo\u1ea1i b\u1ecf c\u00e1c h\u1ea1t s\u1eaft t\u1ef1 do v\u00e0 c\u00e1c t\u1ea1p ch\u1ea5t kim lo\u1ea1i kh\u00e1c.<\/li>\n\n\n\n
  3. R\u1eeda s\u1ea1ch:<\/strong> Sau khi ng\u00e2m trong axit, kim lo\u1ea1i \u0111\u01b0\u1ee3c r\u1eeda s\u1ea1ch b\u1eb1ng n\u01b0\u1edbc \u0111\u1ec3 lo\u1ea1i b\u1ecf c\u00e1c axit v\u00e0 ch\u1ea5t g\u00e2y \u00f4 nhi\u1ec5m c\u00f2n s\u00f3t l\u1ea1i.<\/li>\n\n\n\n
  4. S\u1ea5y kh\u00f4:<\/strong> B\u01b0\u1edbc cu\u1ed1i c\u00f9ng l\u00e0 l\u00e0m kh\u00f4 kim lo\u1ea1i \u0111\u1ec3 tr\u00e1nh b\u1ea5t k\u1ef3 v\u1ebft n\u01b0\u1edbc ho\u1eb7c nhi\u1ec5m b\u1ea9n th\u00eam.<\/li>\n<\/ol>\n\n\n\n

    Qu\u00e1 tr\u00ecnh n\u00e0y kh\u00f4ng ch\u1ec9 l\u00e0m s\u1ea1ch kim lo\u1ea1i m\u00e0 c\u00f2n th\u00fac \u0111\u1ea9y s\u1ef1 h\u00ecnh th\u00e0nh m\u1ed9t l\u1edbp oxit m\u1ecfng, trong su\u1ed1t. L\u1edbp oxit n\u00e0y b\u1ea3o v\u1ec7 b\u1ec1 m\u1eb7t kim lo\u1ea1i kh\u1ecfi ph\u1ea3n \u1ee9ng v\u1edbi m\u00f4i tr\u01b0\u1eddng, gi\u1ea3m nguy c\u01a1 \u0103n m\u00f2n.<\/p>\n\n\n\n

    C\u1ea7n l\u01b0u \u00fd r\u1eb1ng th\u1ee5 \u0111\u1ed9ng h\u00f3a kh\u00e1c v\u1edbi t\u1ea9y r\u1eeda. T\u1ea9y r\u1eeda ch\u1ee7 y\u1ebfu lo\u1ea1i b\u1ecf l\u1edbp oxit v\u00e0 c\u00e1c ch\u1ea5t l\u1eafng \u0111\u1ecdng kh\u00e1c tr\u00ean b\u1ec1 m\u1eb7t kim lo\u1ea1i th\u00f4ng qua axit m\u1ea1nh, trong khi ph\u01b0\u01a1ng ph\u00e1p n\u00e0y t\u0103ng c\u01b0\u1eddng kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n c\u1ee7a kim lo\u1ea1i b\u1eb1ng c\u00e1ch h\u00ecnh th\u00e0nh l\u1edbp b\u1ea3o v\u1ec7 m\u1edbi.<\/p>\n\n\n\n

    C\u00e1c lo\u1ea1i th\u1ee5 \u0111\u1ed9ng<\/strong><\/h2>\n\n\n\n