{"id":3800,"date":"2019-10-08T07:56:19","date_gmt":"2019-10-08T07:56:19","guid":{"rendered":"https:\/\/www.mcctcarbide.com\/?p=3800"},"modified":"2020-05-06T03:05:28","modified_gmt":"2020-05-06T03:05:28","slug":"what-to-know-about-surface-roughness","status":"publish","type":"post","link":"https:\/\/www.meetyoucarbide.com\/vi\/dieu-can-biet-ve-do-nham-be-mat\/","title":{"rendered":"Nh\u1eefng \u0111i\u1ec1u c\u1ea7n bi\u1ebft v\u1ec1 \u0111\u1ed9 nh\u00e1m b\u1ec1 m\u1eb7t"},"content":{"rendered":"
Ch\u00fang t\u00f4i nh\u1eadn th\u1ee9c \u0111\u01b0\u1ee3c r\u1eb1ng \u0111\u1ed9 nh\u00e1m b\u1ec1 m\u1eb7t c\u00f3 ngh\u0129a l\u00e0 r\u1ea5t nhi\u1ec1u trong ng\u00e0nh s\u1ea3n xu\u1ea5t. Khi kh\u00e1i ni\u1ec7m \u0111\u01b0\u1ee3c g\u1ee3i l\u1ea1i trong t\u00e2m tr\u00ed c\u1ee7a b\u1ea1n, ph\u1ea3i c\u00f3 m\u1ed9t s\u1ed1 k\u1ebft c\u1ea5u ph\u1ed5 bi\u1ebfn tr\u00ean c\u00e1c b\u1ed9 ph\u1eadn gia c\u00f4ng, ch\u1eb3ng h\u1ea1n nh\u01b0 b\u1ec1 m\u1eb7t g\u01b0\u01a1ng s\u00e1ng, m\u1edd v\u00e0 \u0111\u00e1nh b\u00f3ng x\u1ec9n. Ch\u00fang l\u00e0 nh\u1eefng g\u00ec m\u00e0 \u0111\u1ed9 nh\u00e1m b\u1ec1 m\u1eb7t kh\u00e1c nhau th\u1ec3 hi\u1ec7n trong \u0111i\u1ec1u ki\u1ec7n v\u0129 m\u00f4. <\/strong><\/strong><\/p>\n\n\n\n Nh\u01b0 ch\u00fang ta \u0111\u00e3 bi\u1ebft, asperity c\u1ee7a m\u1ed9t ph\u1ea7n<\/strong>'<\/strong>B\u1ec1 m\u1eb7t c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u0111\u1ecbnh h\u00ecnh l\u00e0 m\u1ed9t lo\u1ea1t c\u00e1c thung l\u0169ng l\u1edfm ch\u1edfm trong \u0111\u00f3 c\u00f3 \u0111\u1ec9nh, xuy\u00ean qua v\u00e0 kho\u1ea3ng c\u00e1ch gi\u1eefa ch\u00fang. <\/strong><\/strong><\/p>\n\n\n\n Nh\u01b0 m\u1ed9t kh\u00e1i ni\u1ec7m m\u00f4 t\u1ea3 b\u1ec1 m\u1eb7t<\/strong>'<\/strong>C\u1ea5u tr\u00fac k\u00ednh hi\u1ec3n vi, \u0111\u1ed9 nh\u00e1m b\u1ec1 m\u1eb7t tr\u00ean th\u1ef1c t\u1ebf l\u00e0 chi\u1ec1u d\u00e0i S gi\u1eefa c\u00e1c \u0111\u1ec9nh n\u00e0y (ho\u1eb7c m\u00e1ng, th\u01b0\u1eddng d\u01b0\u1edbi 1mm) v\u00e0 \u0111\u1ed9 s\u00e2u Z t\u1eeb m\u00e1ng \u0111\u1ebfn \u0111\u1ec9nh th\u1ec3 hi\u1ec7n trong s\u01a1 \u0111\u1ed3 sau.<\/strong><\/strong><\/p>\n\n\n\n N\u00f3i chung, ch\u00fang t\u00f4i ph\u00e2n bi\u1ec7t \u0111i\u1ec1u ki\u1ec7n b\u1ec1 m\u1eb7t kh\u00e1c nhau t\u00f9y theo ph\u1ea1m vi c\u1ee7a S.<\/p>\n\n\n\n S \uff1c 1mm, \u0111\u1ed9 ch\u1ee5m \u0111\u01b0\u1ee3c coi l\u00e0 \u0111\u1ed9 nh\u00e1m b\u1ec1 m\u1eb7t,<\/p>\n\n\n\n 1\u2264Smm10mm, n\u00f3 \u0111\u01b0\u1ee3c coi l\u00e0 waviness,<\/p>\n\n\n\n S \uff1e 10 mm, n\u00f3 \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 kh\u00f4ng \u0111\u1ed3ng \u0111\u1ec1u h\u00ecnh h\u1ecdc. <\/p>\n\n\n\n\u0110\u1ecbnh ngh\u0129a \u0111\u1ed9 nh\u00e1m b\u1ec1 m\u1eb7t<\/strong><\/strong><\/h2>\n\n\n\n