{"id":4455,"date":"2025-05-22T10:15:59","date_gmt":"2025-05-22T01:15:59","guid":{"rendered":"https:\/\/ohtavn.com\/?post_type=media&p=4455"},"modified":"2025-05-23T19:49:38","modified_gmt":"2025-05-23T10:49:38","slug":"what-are-heat-resistant-and-corrosion-resistant-screws","status":"publish","type":"media","link":"https:\/\/ohtavn.com\/vi\/media\/what-are-heat-resistant-and-corrosion-resistant-screws\/","title":{"rendered":"\u1ed0c v\u00edt ch\u1ecbu nhi\u1ec7t v\u00e0 ch\u1ed1ng \u0103n m\u00f2n l\u00e0 g\u00ec? \u0110\u1eb7c \u0111i\u1ec3m c\u1ee7a s\u1ea3n ph\u1ea9m c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng trong m\u00f4i tr\u01b0\u1eddng kh\u1eafc nghi\u1ec7t"},"content":{"rendered":"
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Gi\u1edbi thi\u1ec7u<\/h3>\n<\/div>\n
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Trong l\u0129nh v\u1ef1c s\u1ea3n xu\u1ea5t, c\u00e1c lo\u1ea1i \u1ed1c v\u00edt \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong m\u00f4i tr\u01b0\u1eddng kh\u1eafc nghi\u1ec7t nh\u01b0 nhi\u1ec7t \u0111\u1ed9 cao ho\u1eb7c ti\u1ebfp x\u00fac v\u1edbi c\u00e1c ch\u1ea5t \u0103n m\u00f2n l\u00e0 kh\u00f4ng th\u1ec3 thi\u1ebfu. Trong nh\u1eefng m\u00f4i tr\u01b0\u1eddng n\u00e0y, \u1ed1c v\u00edt th\u00f4ng th\u01b0\u1eddng kh\u00f4ng th\u1ec3 duy tr\u00ec hi\u1ec7u su\u1ea5t, c\u00f3 th\u1ec3 g\u00e2y ra tai n\u1ea1n nghi\u00eam tr\u1ecdng ho\u1eb7c l\u00e0m gi\u1ea3m ch\u1ea5t l\u01b0\u1ee3ng s\u1ea3n ph\u1ea9m. Do \u0111\u00f3, c\u1ea7n s\u1eed d\u1ee5ng c\u00e1c lo\u1ea1i \u1ed1c v\u00edt \u0111\u1eb7c bi\u1ec7t c\u00f3 kh\u1ea3 n\u0103ng ch\u1ecbu nhi\u1ec7t v\u00e0 ch\u1ed1ng \u0103n m\u00f2n v\u01b0\u1ee3t tr\u1ed9i.<\/p>\n<\/div>\n

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B\u00e0i vi\u1ebft n\u00e0y s\u1ebd gi\u1ea3i th\u00edch chi ti\u1ebft v\u1ec1 c\u00e1c lo\u1ea1i, \u0111\u1eb7c \u0111i\u1ec3m v\u00e0 \u1ee9ng d\u1ee5ng th\u1ef1c t\u1ebf c\u1ee7a \u1ed1c v\u00edt ch\u1ecbu nhi\u1ec7t v\u00e0 ch\u1ed1ng \u0103n m\u00f2n. \u0110\u1eb7c bi\u1ec7t d\u00e0nh cho c\u00e1c k\u1ef9 s\u01b0 v\u00e0 nh\u00e2n vi\u00ean thu mua trong ng\u00e0nh s\u1ea3n xu\u1ea5t, b\u00e0i vi\u1ebft tr\u00ecnh b\u00e0y c\u00e1ch ch\u1ecdn \u1ed1c v\u00edt ph\u00f9 h\u1ee3p, nh\u1eefng \u0111i\u1ec3m c\u1ea7n l\u01b0u \u00fd v\u00e0 c\u00e1c xu h\u01b0\u1edbng c\u00f4ng ngh\u1ec7 m\u1edbi nh\u1ea5t. Qua \u0111\u00f3, ng\u01b0\u1eddi \u0111\u1ecdc c\u00f3 th\u1ec3 trang b\u1ecb ki\u1ebfn th\u1ee9c \u0111\u1ec3 s\u1eed d\u1ee5ng s\u1ea3n ph\u1ea9m m\u1ed9t c\u00e1ch an to\u00e0n v\u00e0 hi\u1ec7u qu\u1ea3 ngay c\u1ea3 trong m\u00f4i tr\u01b0\u1eddng kh\u1eafc nghi\u1ec7t.<\/p>\n<\/div>\n

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Ki\u1ebfn th\u1ee9c c\u01a1 b\u1ea3n v\u1ec1 \u1ed1c v\u00edt ch\u1ecbu nhi\u1ec7t<\/h3>\n<\/div>\n
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V\u1eadt li\u1ec7u v\u00e0 \u0111\u1eb7c t\u00ednh c\u1ee7a \u1ed1c v\u00edt ch\u1ecbu nhi\u1ec7t<\/h4>\n<\/div>\n
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\u1ed0c v\u00edt ch\u1ecbu nhi\u1ec7t \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 s\u1eed d\u1ee5ng trong m\u00f4i tr\u01b0\u1eddng nhi\u1ec7t \u0111\u1ed9 cao, v\u00e0 s\u1eed d\u1ee5ng c\u00e1c v\u1eadt li\u1ec7u \u0111\u1eb7c bi\u1ec7t nh\u01b0 th\u00e9p kh\u00f4ng g\u1ec9, h\u1ee3p kim ch\u1ecbu nhi\u1ec7t, v\u00e0 g\u1ed1m.<\/p>\n<\/div>\n

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  • Th\u00e9p kh\u00f4ng g\u1ec9<\/strong>: Th\u00e9p kh\u00f4ng g\u1ec9 d\u1ea1ng ferit ho\u1eb7c austenit c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng oxy h\u00f3a \u1edf nhi\u1ec7t \u0111\u1ed9 cao v\u00e0 gi\u00e1 th\u00e0nh t\u01b0\u01a1ng \u0111\u1ed1i th\u1ea5p. \u0110\u1eb7c bi\u1ec7t, lo\u1ea1i ferit duy tr\u00ec \u0111\u1ed9 b\u1ec1n t\u1ed1t \u1edf nhi\u1ec7t \u0111\u1ed9 cao.<\/li>\n
  • H\u1ee3p kim ch\u1ecbu nhi\u1ec7t<\/strong>: C\u00e1c h\u1ee3p kim g\u1ed1c niken c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng \u1edf nhi\u1ec7t \u0111\u1ed9 r\u1ea5t cao, th\u01b0\u1eddng \u0111\u01b0\u1ee3c d\u00f9ng trong ng\u00e0nh h\u00e0ng kh\u00f4ng v\u00e0 ph\u00e1t \u0111i\u1ec7n.<\/li>\n
  • G\u1ed1m<\/strong>: C\u00e1c lo\u1ea1i g\u1ed1m nh\u01b0 alumina v\u00e0 zirconia c\u00f3 kh\u1ea3 n\u0103ng ch\u1ecbu nhi\u1ec7t r\u1ea5t cao nh\u01b0ng gi\u00f2n, n\u00ean ph\u1ea1m vi \u1ee9ng d\u1ee5ng b\u1ecb h\u1ea1n ch\u1ebf.<\/li>\n<\/ul>\n<\/div>\n
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    C\u00e1c v\u1eadt li\u1ec7u n\u00e0y \u0111\u01b0\u1ee3c l\u1ef1a ch\u1ecdn t\u00f9y theo nhi\u1ec7t \u0111\u1ed9 s\u1eed d\u1ee5ng v\u00e0 m\u00f4i tr\u01b0\u1eddng, t\u1eeb \u0111\u00f3 ch\u1ebf t\u1ea1o ra c\u00e1c lo\u1ea1i \u1ed1c v\u00edt c\u00f3 \u0111\u1eb7c t\u00ednh ph\u00f9 h\u1ee3p.<\/p>\n<\/div>\n

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    Ti\u00eau chu\u1ea9n c\u1ee7a \u1ed1c v\u00edt ch\u1ecbu nhi\u1ec7t<\/h4>\n<\/div>\n
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    \u1ed0c v\u00edt ch\u1ecbu nhi\u1ec7t c\u00f3 c\u00e1c ti\u00eau chu\u1ea9n nh\u1eb1m \u0111\u1ea3m b\u1ea3o hi\u1ec7u su\u1ea5t trong m\u00f4i tr\u01b0\u1eddng nhi\u1ec7t \u0111\u1ed9 cao. Ti\u00eau bi\u1ec3u nh\u01b0 JIS G 3411 (th\u00e9p kh\u00f4ng g\u1ec9 d\u00f9ng cho nhi\u1ec7t \u0111\u1ed9 cao) v\u00e0 JIS G 4901 (thanh h\u1ee3p kim ch\u1ecbu nhi\u1ec7t). Nh\u1eefng ti\u00eau chu\u1ea9n n\u00e0y quy \u0111\u1ecbnh th\u00e0nh ph\u1ea7n v\u1eadt li\u1ec7u, t\u00ednh ch\u1ea5t c\u01a1 h\u1ecdc v\u00e0 hi\u1ec7u su\u1ea5t \u1edf nhi\u1ec7t \u0111\u1ed9 cao, c\u1ea7n l\u1ef1a ch\u1ecdn \u0111\u00fang ti\u00eau chu\u1ea9n ph\u00f9 h\u1ee3p v\u1edbi m\u00f4i tr\u01b0\u1eddng s\u1eed d\u1ee5ng.<\/p>\n<\/div>\n

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    \u1ee8ng d\u1ee5ng trong m\u00f4i tr\u01b0\u1eddng nhi\u1ec7t \u0111\u1ed9 cao<\/h4>\n<\/div>\n
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    \u1ed0c v\u00edt ch\u1ecbu nhi\u1ec7t \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c l\u0129nh v\u1ef1c nh\u01b0 thi\u1ebft b\u1ecb s\u1ea3n xu\u1ea5t ch\u1ea5t b\u00e1n d\u1eabn, ng\u00e0nh h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5, v\u00e0 linh ki\u1ec7n \u00f4 t\u00f4, n\u01a1i ti\u1ebfp x\u00fac v\u1edbi nhi\u1ec7t \u0111\u1ed9 cao.<\/p>\n<\/div>\n

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