{"id":5876,"date":"2025-12-26T00:55:18","date_gmt":"2025-12-26T00:55:18","guid":{"rendered":"https:\/\/korea-transmission.com\/?p=5876"},"modified":"2025-12-26T00:55:18","modified_gmt":"2025-12-26T00:55:18","slug":"stainless-steel-screw-galling-causes-solutions","status":"publish","type":"post","link":"https:\/\/korea-transmission.com\/vi\/blog\/stainless-steel-screw-galling-causes-solutions\/","title":{"rendered":"Hi\u1ec7n t\u01b0\u1ee3ng k\u1eb9t v\u00edt th\u00e9p kh\u00f4ng g\u1ec9: Nguy\u00ean nh\u00e2n v\u00e0 gi\u1ea3i ph\u00e1p"},"content":{"rendered":"<article>\n<h2 style=\"font-size: 1.8em; border-bottom: 2px solid #ccc; padding-bottom: 10px;\">Gi\u1edbi thi\u1ec7u v\u1ec1 hi\u1ec7n t\u01b0\u1ee3ng k\u1eb9t v\u00edt b\u1eb1ng th\u00e9p kh\u00f4ng g\u1ec9<\/h2>\n<p style=\"text-align: justify;\">C\u00e1c lo\u1ea1i \u1ed1c v\u00edt v\u00e0 \u0111ai \u1ed1c b\u1eb1ng th\u00e9p kh\u00f4ng g\u1ec9 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong nhi\u1ec1u ng\u00e0nh c\u00f4ng nghi\u1ec7p, t\u1eeb h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5 \u0111\u1ebfn h\u00e0ng h\u1ea3i, nh\u1edd kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n v\u00e0 \u0111\u1ed9 b\u1ec1n tuy\u1ec7t v\u1eddi. Tuy nhi\u00ean, m\u1ed9t th\u00e1ch th\u1ee9c th\u01b0\u1eddng g\u1eb7p l\u00e0 hi\u1ec7n t\u01b0\u1ee3ng k\u1eb9t ren, c\u00f2n \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 b\u00f3 ren ho\u1eb7c h\u00e0n ngu\u1ed9i. Hi\u1ec7n t\u01b0\u1ee3ng n\u00e0y x\u1ea3y ra khi c\u00e1c ren gh\u00e9p n\u1ed1i d\u00ednh ch\u1eb7t v\u00e0o nhau d\u01b0\u1edbi \u00e1p l\u1ef1c v\u00e0 ma s\u00e1t, d\u1eabn \u0111\u1ebfn kh\u00f3a v\u0129nh vi\u1ec5n. Hi\u1ec7n t\u01b0\u1ee3ng k\u1eb9t ren \u0111\u1eb7c bi\u1ec7t ph\u1ed5 bi\u1ebfn \u1edf c\u00e1c lo\u1ea1i th\u00e9p kh\u00f4ng g\u1ec9 Austenit nh\u01b0 th\u00e9p 304 v\u00e0 316, theo \u0111\u1ecbnh ngh\u0129a c\u1ee7a c\u00e1c ti\u00eau chu\u1ea9n nh\u01b0 ASTM A193 v\u00e0 ISO 3506. Hi\u1ec3u r\u00f5 v\u1ec1 hi\u1ec7n t\u01b0\u1ee3ng k\u1eb9t ren r\u1ea5t quan tr\u1ecdng \u0111\u1ed1i v\u1edbi c\u00e1c k\u1ef9 s\u01b0 v\u00e0 k\u1ef9 thu\u1eadt vi\u00ean \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o vi\u1ec7c l\u1eafp r\u00e1p v\u00e0 b\u1ea3o tr\u00ec \u0111\u00e1ng tin c\u1eady. B\u00e0i vi\u1ebft n\u00e0y s\u1ebd \u0111i s\u00e2u v\u00e0o c\u00e1c nguy\u00ean nh\u00e2n, \u0111i\u1ec1u ki\u1ec7n r\u1ee7i ro cao v\u00e0 c\u00e1c chi\u1ebfn l\u01b0\u1ee3c gi\u1ea3m thi\u1ec3u \u0111\u00e3 \u0111\u01b0\u1ee3c ch\u1ee9ng minh, d\u1ef1a tr\u00ean c\u00e1c nguy\u00ean t\u1eafc k\u1ef9 thu\u1eadt c\u01a1 kh\u00ed v\u00e0 d\u1eef li\u1ec7u khoa h\u1ecdc v\u1eadt li\u1ec7u \u0111\u00e3 \u0111\u01b0\u1ee3c thi\u1ebft l\u1eadp.<\/p>\n<p style=\"text-align: justify;\">Hi\u1ec7n t\u01b0\u1ee3ng k\u1eb9t \u1ed1c v\u00edt kh\u00f4ng ch\u1ec9 g\u00e2y kh\u00f3 ch\u1ecbu cho ng\u01b0\u1eddi d\u00f9ng ban \u0111\u1ea7u m\u00e0 c\u00f2n ti\u1ec1m \u1ea9n r\u1ee7i ro \u0111\u00e1ng k\u1ec3 trong c\u00e1c \u1ee9ng d\u1ee5ng quan tr\u1ecdng \u0111\u00f2i h\u1ecfi th\u00e1o l\u1eafp. V\u00ed d\u1ee5, trong thi\u1ebft b\u1ecb d\u01b0\u1ee3c ph\u1ea9m ho\u1eb7c m\u00e1y m\u00f3c ch\u1ebf bi\u1ebfn th\u1ef1c ph\u1ea9m, \u1ed1c v\u00edt b\u1ecb k\u1eb9t c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn th\u1eddi gian ng\u1eebng ho\u1ea1t \u0111\u1ed9ng v\u00e0 chi ph\u00ed s\u1eeda ch\u1eefa t\u1ed1n k\u00e9m. B\u1eb1ng c\u00e1ch tu\u00e2n th\u1ee7 c\u00e1c ti\u00eau chu\u1ea9n ng\u00e0nh nh\u01b0 ASME B18.2.1 cho \u1ed1c v\u00edt v\u00e0 ASME B18.2.2 cho \u0111ai \u1ed1c, c\u00e1c chuy\u00ean gia c\u00f3 th\u1ec3 gi\u1ea3m thi\u1ec3u nh\u1eefng v\u1ea5n \u0111\u1ec1 n\u00e0y th\u00f4ng qua vi\u1ec7c l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u v\u00e0 quy tr\u00ecnh l\u1eafp \u0111\u1eb7t \u0111\u00fang c\u00e1ch.<\/p>\n<h2 style=\"font-size: 1.8em; border-bottom: 2px solid #ccc; padding-bottom: 10px;\">C\u00e1c t\u00ecnh hu\u1ed1ng r\u1ee7i ro cao g\u00e2y k\u00edch \u1ee9ng ni\u00eam m\u1ea1c mi\u1ec7ng<\/h2>\n<p style=\"text-align: justify;\">M\u1ed9t s\u1ed1 \u0111i\u1ec1u ki\u1ec7n l\u1eafp \u0111\u1eb7t nh\u1ea5t \u0111\u1ecbnh l\u00e0m t\u0103ng kh\u1ea3 n\u0103ng x\u1ea3y ra hi\u1ec7n t\u01b0\u1ee3ng k\u1eb9t ren \u1edf c\u00e1c \u1ed1c v\u00edt b\u1eb1ng th\u00e9p kh\u00f4ng g\u1ec9. Nh\u1eadn bi\u1ebft \u0111\u01b0\u1ee3c nh\u1eefng tr\u01b0\u1eddng h\u1ee3p n\u00e0y cho ph\u00e9p th\u1ef1c hi\u1ec7n c\u00e1c bi\u1ec7n ph\u00e1p ch\u1ee7 \u0111\u1ed9ng.<\/p>\n<ul style=\"list-style-type: disc; padding-left: 20px;\">\n<li><strong>L\u1eafp \u0111\u1eb7t d\u1ee5ng c\u1ee5 \u0111i\u1ec7n:<\/strong> Vi\u1ec7c s\u1eed d\u1ee5ng c\u00e1c d\u1ee5ng c\u1ee5 \u0111i\u1ec7n ho\u1eb7c kh\u00ed n\u00e9n \u0111\u1ec3 l\u1eafp r\u00e1p nhanh c\u00e1c \u1ed1c v\u00edt kh\u00f4ng ph\u1ee7 l\u1edbp b\u1ea3o v\u1ec7 b\u1eb1ng th\u00e9p kh\u00f4ng g\u1ec9 304 ho\u1eb7c 316 ch\u1eafc ch\u1eafn s\u1ebd d\u1eabn \u0111\u1ebfn hi\u1ec7n t\u01b0\u1ee3ng k\u1eb9t ren. X\u00e1c su\u1ea5t x\u1ea3y ra hi\u1ec7n t\u01b0\u1ee3ng n\u00e0y t\u0103ng l\u00ean theo t\u1ed1c \u0111\u1ed9 quay c\u1ee7a d\u1ee5ng c\u1ee5; \u1edf t\u1ed1c \u0111\u1ed9 quay cao, t\u1ef7 l\u1ec7 k\u1eb9t ren c\u00f3 th\u1ec3 l\u00ean t\u1edbi 100%, \u0111\u1eb7c bi\u1ec7t l\u00e0 v\u1edbi c\u00e1c lo\u1ea1i \u0111ai \u1ed1c kh\u00f3a nh\u01b0 lo\u1ea1i c\u00f3 ch\u00e8n nylon ho\u1eb7c lo\u1ea1i ho\u00e0n to\u00e0n b\u1eb1ng kim lo\u1ea1i. Tuy nhi\u00ean, vi\u1ec7c l\u1eafp \u0111\u1eb7t th\u1ee7 c\u00f4ng hi\u1ebfm khi g\u00e2y ra v\u1ea5n \u0111\u1ec1, cho th\u1ea5y m\u1ed1i t\u01b0\u01a1ng quan v\u1edbi nhi\u1ec7t l\u01b0\u1ee3ng sinh ra do ma s\u00e1t t\u1eeb qu\u00e1 tr\u00ecnh quay \u1edf t\u1ed1c \u0111\u1ed9 cao.<\/li>\n<li><strong>L\u1eafp r\u00e1p m\u00f4-men xo\u1eafn cao, kh\u00f4ng c\u00e2n b\u1eb1ng ho\u1eb7c l\u1ec7ch tr\u1ee5c:<\/strong> C\u00e1c \u1ee9ng d\u1ee5ng nh\u01b0 k\u1ebft n\u1ed1i m\u1eb7t b\u00edch th\u01b0\u1eddng li\u00ean quan \u0111\u1ebfn m\u00f4-men xo\u1eafn qu\u00e1 l\u1edbn n\u1ebfu kh\u00f4ng s\u1eed d\u1ee5ng c\u1edd l\u00ea l\u1ef1c, d\u1eabn \u0111\u1ebfn \u00e1p su\u1ea5t kh\u00f4ng \u0111\u1ec1u. C\u00e1c ti\u00eau chu\u1ea9n nh\u01b0 API 6A d\u00e0nh cho m\u1eb7t b\u00edch khuy\u1ebfn ngh\u1ecb tr\u00ecnh t\u1ef1 si\u1ebft bu l\u00f4ng \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t \u0111\u1ec3 tr\u00e1nh \u0111i\u1ec1u n\u00e0y. S\u1ef1 l\u1ec7ch t\u00e2m, sai l\u1ec7ch tr\u1ee5c ho\u1eb7c l\u1eafp \u0111\u1eb7t nghi\u00eang c\u00e0ng l\u00e0m t\u0103ng nguy c\u01a1 bi\u1ebfn d\u1ea1ng v\u00e0 d\u00ednh ren.<\/li>\n<li><strong>C\u00e1c m\u00f4i tr\u01b0\u1eddng kh\u00e1c:<\/strong> Theo h\u01b0\u1edbng d\u1eabn ISO 898-1 v\u1ec1 t\u00ednh ch\u1ea5t c\u01a1 h\u1ecdc c\u1ee7a c\u00e1c chi ti\u1ebft l\u1eafp gh\u00e9p, m\u00f4i tr\u01b0\u1eddng rung \u0111\u1ed9ng, h\u1ec7 th\u1ed1ng \u00e1p su\u1ea5t cao ho\u1eb7c m\u00f4i tr\u01b0\u1eddng c\u00f3 ch\u1ea5t g\u00e2y \u00f4 nhi\u1ec5m c\u00f3 th\u1ec3 l\u00e0m t\u0103ng nguy c\u01a1.<\/li>\n<\/ul>\n<p style=\"text-align: justify;\">V\u00ed d\u1ee5, trong c\u00e1c l\u1eafp \u0111\u1eb7t m\u1eb7t b\u00edch, vi\u1ec7c si\u1ebft qu\u00e1 ch\u1eb7t v\u01b0\u1ee3t qu\u00e1 gi\u00e1 tr\u1ecb khuy\u1ebfn c\u00e1o (v\u00ed d\u1ee5: gi\u1edbi h\u1ea1n ch\u1ea3y 50-70% \u0111\u1ed1i v\u1edbi th\u00e9p kh\u00f4ng g\u1ec9 304) s\u1ebd t\u1ea1o ra c\u00e1c \u0111i\u1ec3m \u1ee9ng su\u1ea5t c\u1ee5c b\u1ed9 d\u1ec5 b\u1ecb m\u00e0i m\u00f2n.<\/p>\n<h2 style=\"font-size: 1.8em; border-bottom: 2px solid #ccc; padding-bottom: 10px;\">Nguy\u00ean nh\u00e2n c\u01a1 b\u1ea3n g\u00e2y ra hi\u1ec7n t\u01b0\u1ee3ng vi\u00eam lo\u00e9t mi\u1ec7ng<\/h2>\n<p style=\"text-align: justify;\">Nguy\u00ean nh\u00e2n ch\u00ednh g\u00e2y ra hi\u1ec7n t\u01b0\u1ee3ng m\u00e0i m\u00f2n kh\u00f4ng \u0111\u1ec1u \u1edf th\u00e9p kh\u00f4ng g\u1ec9 l\u00e0 s\u1ef1 b\u00e1m d\u00ednh v\u00e0 sinh nhi\u1ec7t. Th\u00e9p kh\u00f4ng g\u1ec9 Austenit c\u00f3 \u0111\u1ed9 d\u1ebbo cao, t\u1ea1o \u0111i\u1ec1u ki\u1ec7n thu\u1eadn l\u1ee3i cho s\u1ef1 truy\u1ec1n v\u1eadt li\u1ec7u gi\u1eefa c\u00e1c ren d\u01b0\u1edbi t\u1ea3i tr\u1ecdng. K\u1ebft h\u1ee3p v\u1edbi kh\u1ea3 n\u0103ng d\u1eabn nhi\u1ec7t k\u00e9m, nhi\u1ec7t ma s\u00e1t t\u00edch t\u1ee5, ph\u00e1 h\u1ee7y c\u00e1c l\u1edbp oxit b\u1ea3o v\u1ec7 v\u00e0 g\u00e2y ra hi\u1ec7n t\u01b0\u1ee3ng h\u00e0n ngu\u1ed9i.<\/p>\n<ul style=\"list-style-type: disc; padding-left: 20px;\">\n<li><strong>\u0110\u1ed9 b\u00e1m d\u00ednh:<\/strong> Nh\u1edd \u0111\u1ed9 d\u1ebbo cao, \u0111\u01b0\u1ee3c \u0111o b\u1eb1ng \u0111\u1ed9 gi\u00e3n d\u00e0i v\u00e0 \u0111\u1ed9 gi\u1ea3m di\u1ec7n t\u00edch trong c\u00e1c th\u1eed nghi\u1ec7m k\u00e9o theo ti\u00eau chu\u1ea9n ASTM E8.<\/li>\n<li><strong>Nhi\u1ec7t:<\/strong> \u0110\u1ed9 d\u1eabn nhi\u1ec7t th\u1ea5p gi\u1eef nhi\u1ec7t t\u1ea1i c\u00e1c \u0111i\u1ec3m ti\u1ebfp x\u00fac, \u0111\u1ea9y nhanh qu\u00e1 tr\u00ecnh k\u1ebft d\u00ednh.<\/li>\n<\/ul>\n<h2 style=\"font-size: 1.8em; border-bottom: 2px solid #ccc; padding-bottom: 10px;\">So s\u00e1nh t\u00ednh ch\u1ea5t v\u1eadt li\u1ec7u<\/h2>\n<p style=\"text-align: justify;\">\u0110\u1ec3 minh h\u1ecda, h\u00e3y so s\u00e1nh th\u00e9p kh\u00f4ng g\u1ec9 304 v\u1edbi th\u00e9p cacbon 10B21, lo\u1ea1i th\u00e9p th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho c\u00e1c lo\u1ea1i \u1ed1c v\u00edt. C\u00e1c ch\u1ec9 s\u1ed1 v\u1ec1 \u0111\u1ed9 d\u1ebbo t\u1eeb b\u1ea3ng d\u1eef li\u1ec7u v\u1eadt li\u1ec7u ti\u00eau chu\u1ea9n cho th\u1ea5y s\u1ef1 kh\u00e1c bi\u1ec7t \u0111\u00e1ng k\u1ec3:<\/p>\n<div style=\"overflow-x: auto;\">\n<table style=\"border-collapse: collapse; width: 100%; margin: 20px 0;\">\n<thead>\n<tr>\n<th style=\"border: 1px solid #ddd; padding: 8px; background-color: #f2f2f2;\">T\u00e0i s\u1ea3n<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; background-color: #f2f2f2;\">Th\u00e9p kh\u00f4ng g\u1ec9 304 (%)<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; background-color: #f2f2f2;\">Th\u00e9p cacbon 10B21 (%)<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; background-color: #f2f2f2;\">S\u1ef1 kh\u00e1c bi\u1ec7t<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">\u0110\u1ed9 gi\u00e3n d\u00e0i khi \u0111\u1ee9t<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">62<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">27<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">230%<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">Gi\u1ea3m di\u1ec7n t\u00edch<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">78<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">60<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">30%<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p style=\"text-align: justify;\">\u0110\u1ed9 d\u1eabn nhi\u1ec7t c\u0169ng thay \u0111\u1ed5i:<\/p>\n<div style=\"overflow-x: auto;\">\n<table style=\"border-collapse: collapse; width: 100%; margin: 20px 0;\">\n<thead>\n<tr>\n<th style=\"border: 1px solid #ddd; padding: 8px; background-color: #f2f2f2;\">V\u1eadt li\u1ec7u<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; background-color: #f2f2f2;\">\u0110\u1ed9 d\u1eabn nhi\u1ec7t (W\/m\u00b7K)<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">Th\u00e9p kh\u00f4ng g\u1ec9<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">16.2<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">Th\u00e9p cacbon<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">45<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">\u0110\u1ed3ng<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">383<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p style=\"text-align: justify;\">Nh\u1eefng \u0111\u1eb7c t\u00ednh n\u00e0y gi\u1ea3i th\u00edch t\u1ea1i sao th\u00e9p kh\u00f4ng g\u1ec9 d\u1ec5 b\u1ecb h\u01b0 h\u1ecfng h\u01a1n: \u0111\u1ed9 d\u1ebbo cao cho ph\u00e9p bi\u1ebfn d\u1ea1ng d\u1ebbo, trong khi \u0111\u1ed9 d\u1eabn nhi\u1ec7t th\u1ea5p gi\u1eef nhi\u1ec7t, theo d\u1eef li\u1ec7u t\u1eeb S\u1ed5 tay ASM T\u1eadp 1.<\/p>\n<h2 style=\"font-size: 1.8em; border-bottom: 2px solid #ccc; padding-bottom: 10px;\">C\u01a1 ch\u1ebf t\u1eebng b\u01b0\u1edbc c\u1ee7a hi\u1ec7n t\u01b0\u1ee3ng s\u01b0ng t\u1ea5y m\u00f4 m\u1ec1m<\/h2>\n<ol style=\"list-style-type: decimal; padding-left: 20px;\">\n<li>Vi\u1ec7c si\u1ebft ch\u1eb7t ban \u0111\u1ea7u t\u1ea1o ra \u00e1p l\u1ef1c v\u00e0 ma s\u00e1t gi\u1eefa c\u00e1c ren.<\/li>\n<li>Nhi\u1ec7t \u0111\u1ed9 cao s\u1ebd ph\u00e1 h\u1ee7y l\u1edbp oxit crom th\u1ee5 \u0111\u1ed9ng tr\u00ean b\u1ec1 m\u1eb7t th\u00e9p kh\u00f4ng g\u1ec9.<\/li>\n<li>S\u1ef1 ti\u1ebfp x\u00fac tr\u1ef1c ti\u1ebfp gi\u1eefa kim lo\u1ea1i v\u1edbi kim lo\u1ea1i d\u1eabn \u0111\u1ebfn hi\u1ec7n t\u01b0\u1ee3ng c\u1eaft v\u00e0 t\u1eafc ngh\u1ebdn t\u1ea1i c\u00e1c \u0111i\u1ec3m ti\u1ebfp x\u00fac.<\/li>\n<li>Hi\u1ec7n t\u01b0\u1ee3ng b\u00e1m d\u00ednh x\u1ea3y ra, lan truy\u1ec1n d\u1ecdc theo s\u1ee3i ch\u1ec9 (th\u01b0\u1eddng trong m\u1ed9t v\u00f2ng xo\u1eafn ho\u00e0n ch\u1ec9nh).<\/li>\n<li>Vi\u1ec7c k\u1eb9t c\u1ee9ng ho\u00e0n to\u00e0n s\u1ebd ng\u0103n c\u1ea3n vi\u1ec7c xoay ho\u1eb7c th\u00e1o r\u1eddi th\u00eam.<\/li>\n<\/ol>\n<p style=\"text-align: justify;\">Quy tr\u00ecnh n\u00e0y ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c nghi\u00ean c\u1ee9u v\u1ec1 ma s\u00e1t h\u1ecdc trong ti\u00eau chu\u1ea9n ASTM G98 v\u1ec1 th\u1eed nghi\u1ec7m kh\u1ea3 n\u0103ng ch\u1ed1ng m\u00e0i m\u00f2n.<\/p>\n<h2 style=\"font-size: 1.8em; border-bottom: 2px solid #ccc; padding-bottom: 10px;\">Ph\u00f2ng ng\u1eeba v\u00e0 gi\u1ea3i ph\u00e1p hi\u1ec7u qu\u1ea3<\/h2>\n<p style=\"text-align: justify;\">Ng\u0103n ng\u1eeba hi\u1ec7n t\u01b0\u1ee3ng k\u1eb9t l\u01b0\u1ee1i \u0111\u00f2i h\u1ecfi s\u1ef1 h\u1ee3p t\u00e1c gi\u1eefa nh\u00e0 s\u1ea3n xu\u1ea5t v\u00e0 ng\u01b0\u1eddi s\u1eed d\u1ee5ng.<\/p>\n<h3 style=\"font-size: 1.4em;\">D\u00e0nh cho c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t:<\/h3>\n<ul style=\"list-style-type: disc; padding-left: 20px;\">\n<li>\u00c1p d\u1ee5ng c\u00e1c l\u1edbp ph\u1ee7 ch\u1ed1ng m\u00e0i m\u00f2n nh\u01b0 ch\u1ea5t b\u00f4i tr\u01a1n kh\u00f4 (v\u00ed d\u1ee5: molypden disulfua theo ti\u00eau chu\u1ea9n MIL-PRF-46010) ho\u1eb7c s\u00e1p \u0111\u1ec3 t\u0103ng c\u01b0\u1eddng kh\u1ea3 n\u0103ng b\u00f4i tr\u01a1n v\u00e0 t\u1ea3n nhi\u1ec7t.<\/li>\n<li>S\u1eed d\u1ee5ng c\u00e1c v\u1eadt li\u1ec7u kh\u00e1c nhau, ch\u1eb3ng h\u1ea1n nh\u01b0 k\u1ebft h\u1ee3p bu l\u00f4ng th\u00e9p kh\u00f4ng g\u1ec9 v\u1edbi \u0111ai \u1ed1c th\u00e9p carbon, m\u1eb7c d\u00f9 \u0111i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 l\u00e0m gi\u1ea3m kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n.<\/li>\n<\/ul>\n<h3 style=\"font-size: 1.4em;\">D\u00e0nh cho ng\u01b0\u1eddi d\u00f9ng:<\/h3>\n<ul style=\"list-style-type: disc; padding-left: 20px;\">\n<li>Theo h\u01b0\u1edbng d\u1eabn si\u1ebft bu l\u00f4ng ISO 16047, h\u00e3y gi\u1ea3m t\u1ed1c \u0111\u1ed9 c\u1ee7a d\u1ee5ng c\u1ee5 \u0111i\u1ec7n v\u00e0 s\u1eed d\u1ee5ng c\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec1u khi\u1ec3n m\u00f4-men xo\u1eafn \u0111\u1ec3 tr\u00e1nh si\u1ebft qu\u00e1 ch\u1eb7t.<\/li>\n<li>S\u1eed d\u1ee5ng c\u00e1c h\u1ee3p ch\u1ea5t ch\u1ed1ng k\u1eb9t (v\u00ed d\u1ee5: g\u1ed1c niken cho nhi\u1ec7t \u0111\u1ed9 cao) tr\u1ef1c ti\u1ebfp l\u00ean ren trong c\u00e1c \u1ee9ng d\u1ee5ng \u0111\u00f2i h\u1ecfi kh\u1eaft khe nh\u01b0 m\u1eb7t b\u00edch.<\/li>\n<li>\u0110\u1ea3m b\u1ea3o s\u1ef1 th\u1eb3ng h\u00e0ng v\u00e0 c\u00e2n b\u1eb1ng trong qu\u00e1 tr\u00ecnh l\u1eafp r\u00e1p \u0111\u1ec3 gi\u1ea3m thi\u1ec3u t\u1ea3i tr\u1ecdng l\u1ec7ch t\u00e2m.<\/li>\n<\/ul>\n<p style=\"text-align: justify;\">Vi\u1ec7c th\u1ef1c hi\u1ec7n c\u00e1c bi\u1ec7n ph\u00e1p n\u00e0y c\u00f3 th\u1ec3 gi\u1ea3m s\u1ed1 v\u1ee5 m\u00e0i m\u00f2n t\u1edbi 90% trong c\u00e1c th\u1eed nghi\u1ec7m c\u00f3 ki\u1ec3m so\u00e1t.<\/p>\n<h2 style=\"font-size: 1.8em; border-bottom: 2px solid #ccc; padding-bottom: 10px;\">Hi\u1ec7n t\u01b0\u1ee3ng m\u00e0i m\u00f2n \u1edf c\u00e1c v\u1eadt li\u1ec7u kh\u00e1c: \u0110\u1ed3ng, nh\u00f4m, titan v\u00e0 th\u00e9p carbon.<\/h2>\n<p style=\"text-align: justify;\">Hi\u1ec7n t\u01b0\u1ee3ng m\u00e0i m\u00f2n kh\u00f4ng ch\u1ec9 x\u1ea3y ra v\u1edbi th\u00e9p kh\u00f4ng g\u1ec9. C\u00e1c chi ti\u1ebft b\u1eb1ng \u0111\u1ed3ng, v\u1edbi \u0111\u1ed9 d\u1ebbo cao nh\u01b0ng d\u1eabn nhi\u1ec7t tuy\u1ec7t v\u1eddi (383 W\/m\u00b7K), \u00edt b\u1ecb m\u00e0i m\u00f2n h\u01a1n do nhi\u1ec7t t\u1ea3n ra nhanh ch\u00f3ng. \u0110\u1ed3ng c\u00f3 \u0111\u1ed9 tinh khi\u1ebft cao d\u1ec5 b\u1ecb m\u00e0i m\u00f2n h\u01a1n so v\u1edbi c\u00e1c h\u1ee3p kim c\u00f3 ch\u00ec, v\u1ed1n \u0111\u00f3ng vai tr\u00f2 nh\u01b0 ch\u1ea5t b\u00f4i tr\u01a1n. Nh\u00f4m v\u00e0 titan, \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c \u1ee9ng d\u1ee5ng nh\u1eb9 theo ti\u00eau chu\u1ea9n AMS, c\u0169ng g\u1eb7p c\u00e1c v\u1ea5n \u0111\u1ec1 t\u01b0\u01a1ng t\u1ef1 do s\u1ef1 ph\u00e1 v\u1ee1 l\u1edbp oxit v\u00e0 \u0111\u1ed9 d\u1ebbo. Tuy nhi\u00ean, th\u00e9p carbon hi\u1ebfm khi b\u1ecb m\u00e0i m\u00f2n; thay v\u00e0o \u0111\u00f3, n\u00f3 c\u00f3 xu h\u01b0\u1edbng b\u1ecb g\u00e3y do \u0111\u1ed9 d\u1ebbo th\u1ea5p h\u01a1n (v\u00ed d\u1ee5: \u0111\u1ed9 gi\u00e3n d\u00e0i c\u1ee7a 27% \u0111\u1ed1i v\u1edbi 10B21). M\u1eb7c d\u00f9 \u0111\u1ed9 d\u1ebbo cao c\u00f3 l\u1ee3i cho kh\u1ea3 n\u0103ng ch\u1ed1ng m\u1ecfi do rung \u0111\u1ed9ng (theo ASTM F606), nh\u01b0ng n\u00f3 l\u1ea1i g\u00f3p ph\u1ea7n l\u00e0m t\u0103ng nguy c\u01a1 m\u00e0i m\u00f2n.<\/p>\n<h2 style=\"font-size: 1.8em; border-bottom: 2px solid #ccc; padding-bottom: 10px;\">Th\u00e1o c\u00e1c \u1ed1c v\u00edt b\u1ecb k\u1eb9t<\/h2>\n<p style=\"text-align: justify;\">N\u1ebfu hi\u1ec7n t\u01b0\u1ee3ng k\u1eb9t x\u1ea3y ra \u1edf b\u1ec1 m\u1eb7t, h\u00e3y b\u00f4i d\u1ea7u b\u00f4i tr\u01a1n v\u00e0 si\u1ebft ch\u1eb7t l\u1ea1i c\u1ea9n th\u1eadn. \u0110\u1ed1i v\u1edbi tr\u01b0\u1eddng h\u1ee3p k\u1eb9t s\u00e2u, n\u00ean d\u00f9ng c\u01b0a ho\u1eb7c m\u00e1y m\u00e0i \u0111\u1ec3 c\u1eaft bu l\u00f4ng nh\u1eb1m tr\u00e1nh l\u00e0m h\u1ecfng c\u00e1c b\u1ed9 ph\u1eadn xung quanh. Trong tr\u01b0\u1eddng h\u1ee3p nghi\u00eam tr\u1ecdng, h\u00e3y s\u1eed d\u1ee5ng c\u00e1c d\u1ee5ng c\u1ee5 th\u00e1o chuy\u00ean d\u1ee5ng, nh\u01b0ng ph\u00f2ng ng\u1eeba v\u1eabn l\u00e0 l\u1ef1a ch\u1ecdn t\u1ed1t h\u01a1n.<\/p>\n<h2 style=\"font-size: 1.8em; border-bottom: 2px solid #ccc; padding-bottom: 10px;\">C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p (FAQ)<\/h2>\n<div class=\"faq\">\n<h3 style=\"font-size: 1.4em;\">S\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa hi\u1ec7n t\u01b0\u1ee3ng k\u1eb9t v\u00e0 b\u00f3 c\u1ee9ng \u1edf \u1ed1c v\u00edt l\u00e0 g\u00ec?<\/h3>\n<p style=\"text-align: justify;\">Hi\u1ec7n t\u01b0\u1ee3ng m\u00e0i m\u00f2n d\u00ednh gi\u1eefa c\u00e1c ren d\u1eabn \u0111\u1ebfn h\u00e0n ngu\u1ed9i, trong khi hi\u1ec7n t\u01b0\u1ee3ng k\u1eb9t th\u01b0\u1eddng \u00e1m ch\u1ec9 s\u1ef1 kh\u00f3a ch\u1eb7t h\u01a1n do \u0103n m\u00f2n ho\u1eb7c m\u1ea3nh v\u1ee5n. Theo thu\u1eadt ng\u1eef ASTM, trong th\u00e9p kh\u00f4ng g\u1ec9, m\u00e0i m\u00f2n d\u00ednh l\u00e0 c\u01a1 ch\u1ebf ch\u1ee7 y\u1ebfu.<\/p>\n<h3 style=\"font-size: 1.4em;\">Li\u1ec7u c\u00f3 th\u1ec3 ng\u0103n ng\u1eeba ho\u00e0n to\u00e0n hi\u1ec7n t\u01b0\u1ee3ng m\u00e0i m\u00f2n \u1edf th\u00e9p kh\u00f4ng g\u1ec9 kh\u00f4ng?<\/h3>\n<p style=\"text-align: justify;\">M\u1eb7c d\u00f9 kh\u00f4ng ph\u1ea3i l\u00fac n\u00e0o c\u0169ng lo\u1ea1i b\u1ecf ho\u00e0n to\u00e0n, vi\u1ec7c s\u1eed d\u1ee5ng ch\u1ea5t b\u00f4i tr\u01a1n, ki\u1ec3m so\u00e1t m\u00f4-men xo\u1eafn v\u00e0 t\u1ed1c \u0111\u1ed9 l\u1eafp r\u00e1p ch\u1eadm h\u01a1n theo ti\u00eau chu\u1ea9n ISO c\u00f3 th\u1ec3 gi\u1ea3m \u0111\u00e1ng k\u1ec3 r\u1ee7i ro, \u0111\u1ea1t \u0111\u01b0\u1ee3c t\u1ef7 l\u1ec7 s\u1ef1 c\u1ed1 g\u1ea7n b\u1eb1ng kh\u00f4ng trong c\u00e1c thi\u1ebft l\u1eadp t\u1ed1i \u01b0u.<\/p>\n<h3 style=\"font-size: 1.4em;\">T\u1ea1i sao vi\u1ec7c l\u1eafp \u0111\u1eb7t th\u1ee7 c\u00f4ng l\u1ea1i tr\u00e1nh \u0111\u01b0\u1ee3c hi\u1ec7n t\u01b0\u1ee3ng k\u1eb9t khu\u00f4n?<\/h3>\n<p style=\"text-align: justify;\">C\u00e1c ph\u01b0\u01a1ng ph\u00e1p th\u1ee7 c\u00f4ng t\u1ea1o ra \u00edt nhi\u1ec7t h\u01a1n v\u00e0 cho ph\u00e9p \u0111i\u1ec1u ch\u1ec9nh t\u1eebng b\u01b0\u1edbc, ng\u0103n ng\u1eeba s\u1ef1 b\u00e1m d\u00ednh nhanh ch\u00f3ng. C\u00e1c d\u1ee5ng c\u1ee5 \u0111i\u1ec7n l\u00e0m t\u0103ng t\u1ed1c \u0111\u1ed9 ma s\u00e1t, \u0111\u1ea9y nhi\u1ec7t \u0111\u1ed9 l\u00ean cao v\u01b0\u1ee3t qu\u00e1 gi\u1edbi h\u1ea1n ch\u1ecbu \u0111\u1ef1ng c\u1ee7a l\u1edbp oxit.<\/p>\n<h3 style=\"font-size: 1.4em;\">C\u00f3 ti\u00eau chu\u1ea9n n\u00e0o \u0111\u1ec3 ki\u1ec3m tra kh\u1ea3 n\u0103ng ch\u1ed1ng m\u00e0i m\u00f2n kh\u00f4ng?<\/h3>\n<p style=\"text-align: justify;\">\u0110\u00fang v\u1eady, ti\u00eau chu\u1ea9n ASTM G98 cung c\u1ea5p ph\u01b0\u01a1ng ph\u00e1p th\u1eed nghi\u1ec7m n\u00fat tr\u00ean kh\u1ed1i \u0111\u1ec3 \u0111\u00e1nh gi\u00e1 ng\u01b0\u1ee1ng \u1ee9ng su\u1ea5t m\u00e0i m\u00f2n c\u1ee7a v\u1eadt li\u1ec7u, h\u1ed7 tr\u1ee3 trong vi\u1ec7c l\u1ef1a ch\u1ecdn \u1ed1c v\u00edt.<\/p>\n<h3 style=\"font-size: 1.4em;\">\u0110\u1ed9 nh\u00e1m b\u1ec1 m\u1eb7t \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn hi\u1ec7n t\u01b0\u1ee3ng k\u1eb9t d\u00ednh nh\u01b0 th\u1ebf n\u00e0o?<\/h3>\n<p style=\"text-align: justify;\">B\u1ec1 m\u1eb7t ho\u00e0n thi\u1ec7n nh\u1eb5n h\u01a1n (v\u00ed d\u1ee5: Ra &lt; 0,8 \u03bcm theo ti\u00eau chu\u1ea9n ISO 1302) l\u00e0m gi\u1ea3m c\u00e1c \u0111i\u1ec3m g\u1ed3 gh\u1ec1 ti\u1ebfp x\u00fac ban \u0111\u1ea7u, gi\u1ea3m kh\u1ea3 n\u0103ng m\u00e0i m\u00f2n b\u1eb1ng c\u00e1ch gi\u1ea3m thi\u1ec3u c\u00e1c \u0111i\u1ec3m \u00e1p l\u1ef1c c\u1ee5c b\u1ed9.<\/p>\n<h3 style=\"font-size: 1.4em;\">Hi\u1ec7n t\u01b0\u1ee3ng m\u00e0i m\u00f2n c\u00f3 ph\u1ed5 bi\u1ebfn h\u01a1n \u1edf m\u1ed9t s\u1ed1 lo\u1ea1i th\u00e9p kh\u00f4ng g\u1ec9 nh\u1ea5t \u0111\u1ecbnh kh\u00f4ng?<\/h3>\n<p style=\"text-align: justify;\">C\u00e1c lo\u1ea1i th\u00e9p Austenit nh\u01b0 304 v\u00e0 316 d\u1ec5 b\u1ecb \u0103n m\u00f2n nh\u1ea5t do c\u1ea5u tr\u00fac vi m\u00f4 c\u1ee7a ch\u00fang; c\u00e1c lo\u1ea1i th\u00e9p Martensit ho\u1eb7c \u0111\u01b0\u1ee3c t\u00f4i c\u1ee9ng b\u1eb1ng k\u1ebft t\u1ee7a c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n t\u1ed1t h\u01a1n nh\u01b0ng kh\u1ea3 n\u0103ng b\u1ea3o v\u1ec7 ch\u1ed1ng \u0103n m\u00f2n th\u1ea5p h\u01a1n.<\/p>\n<\/div>\n<\/article>\n<p>&nbsp;<\/p>","protected":false},"excerpt":{"rendered":"<p>Gi\u1edbi thi\u1ec7u v\u1ec1 hi\u1ec7n t\u01b0\u1ee3ng k\u1eb9t ren tr\u00ean \u1ed1c v\u00edt th\u00e9p kh\u00f4ng g\u1ec9 C\u00e1c lo\u1ea1i \u1ed1c v\u00edt v\u00e0 \u0111ai \u1ed1c b\u1eb1ng th\u00e9p kh\u00f4ng g\u1ec9 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong nhi\u1ec1u ng\u00e0nh c\u00f4ng nghi\u1ec7p, t\u1eeb h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5 \u0111\u1ebfn h\u00e0ng h\u1ea3i, nh\u1edd kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n v\u00e0 \u0111\u1ed9 b\u1ec1n tuy\u1ec7t v\u1eddi. Tuy nhi\u00ean, m\u1ed9t th\u00e1ch th\u1ee9c th\u01b0\u1eddng g\u1eb7p l\u00e0 hi\u1ec7n t\u01b0\u1ee3ng k\u1eb9t ren, c\u00f2n \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 b\u00f3 ren ho\u1eb7c h\u00e0n ngu\u1ed9i. Hi\u1ec7n t\u01b0\u1ee3ng n\u00e0y x\u1ea3y ra khi c\u00e1c ren kh\u1edbp n\u1ed1i b\u1ecb d\u00ednh ch\u1eb7t v\u00e0o nhau [\u2026]<\/p>","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":"","footnotes":""},"categories":[220],"tags":[],"class_list":["post-5876","post","type-post","status-publish","format-standard","hentry","category-technical-documentation-and-references"],"_links":{"self":[{"href":"https:\/\/korea-transmission.com\/vi\/wp-json\/wp\/v2\/posts\/5876","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/korea-transmission.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/korea-transmission.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/korea-transmission.com\/vi\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/korea-transmission.com\/vi\/wp-json\/wp\/v2\/comments?post=5876"}],"version-history":[{"count":2,"href":"https:\/\/korea-transmission.com\/vi\/wp-json\/wp\/v2\/posts\/5876\/revisions"}],"predecessor-version":[{"id":5878,"href":"https:\/\/korea-transmission.com\/vi\/wp-json\/wp\/v2\/posts\/5876\/revisions\/5878"}],"wp:attachment":[{"href":"https:\/\/korea-transmission.com\/vi\/wp-json\/wp\/v2\/media?parent=5876"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/korea-transmission.com\/vi\/wp-json\/wp\/v2\/categories?post=5876"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/korea-transmission.com\/vi\/wp-json\/wp\/v2\/tags?post=5876"}],"curies":[{"name":"trang web","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}