{"id":7017,"date":"2021-12-09T13:12:20","date_gmt":"2021-12-09T05:12:20","guid":{"rendered":"https:\/\/xzfastener.com\/?p=7017"},"modified":"2026-06-23T13:14:02","modified_gmt":"2026-06-23T05:14:02","slug":"flat-washers-and-loosening-why-load-distribution-still-matters","status":"publish","type":"post","link":"https:\/\/xzfastener.com\/vi\/flat-washers-and-loosening-why-load-distribution-still-matters\/","title":{"rendered":"V\u00f2ng \u0111\u1ec7m ph\u1eb3ng v\u00e0 n\u1edbi l\u1ecfng: T\u1ea1i sao ph\u00e2n ph\u1ed1i t\u1ea3i v\u1eabn l\u00e0 v\u1ea5n \u0111\u1ec1"},"content":{"rendered":"<p>Tr\u00ean c\u00e1c c\u00f4ng tr\u01b0\u1eddng, t\u00f4i v\u1eabn nghe th\u1ea5y c\u00e2u h\u1ecfi n\u00e0y: \u201cLi\u1ec7u v\u00f2ng \u0111\u1ec7m ph\u1eb3ng c\u00f3 ng\u0103n \u0111\u01b0\u1ee3c bu l\u00f4ng b\u1ecb l\u1ecfng kh\u00f4ng?\u201d C\u00e2u tr\u1ea3 l\u1eddi ng\u1eafn g\u1ecdn l\u00e0 kh\u00f4ng, kh\u00f4ng ph\u1ea3i t\u1ef1 n\u00f3.<\/p>\n\n\n\n<p>V\u00f2ng \u0111\u1ec7m ph\u1eb3ng kh\u00f4ng ph\u1ea3i l\u00e0 v\u00f2ng \u0111\u1ec7m kh\u00f3a. C\u00f4ng vi\u1ec7c ch\u00ednh c\u1ee7a n\u00f3 l\u00e0 ph\u00e2n ph\u1ed1i t\u1ea3i. Nh\u01b0ng \u0111i\u1ec1u \u0111\u00f3 kh\u00f4ng l\u00e0m cho n\u00f3 kh\u00f4ng quan tr\u1ecdng. Trong nhi\u1ec1u m\u1ed1i n\u1ed1i b\u1eaft v\u00edt, v\u00f2ng \u0111\u1ec7m ph\u1eb3ng ph\u00f9 h\u1ee3p s\u1ebd gi\u00fap b\u1ea3o v\u1ec7 t\u1ea3i tr\u01b0\u1edbc, gi\u1ea3m h\u01b0 h\u1ecfng b\u1ec1 m\u1eb7t v\u00e0 ng\u0103n ch\u1eb7n s\u1ef1 l\u1eafng \u0111\u1ecdng nh\u1ecf th\u01b0\u1eddng g\u00e2y ra v\u1ea5n \u0111\u1ec1 l\u1ecfng l\u1ebbo.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">V\u00f2ng \u0111\u1ec7m ph\u1eb3ng th\u1ef1c s\u1ef1 l\u00e0m \u0111\u01b0\u1ee3c nh\u1eefng g\u00ec<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">N\u00f3 ki\u1ec3m so\u00e1t b\u1ec1 m\u1eb7t \u1ed5 tr\u1ee5c<\/h3>\n\n\n\n<p>Khi m\u1ed9t bu l\u00f4ng ho\u1eb7c \u0111ai \u1ed1c \u0111\u01b0\u1ee3c si\u1ebft ch\u1eb7t, l\u1ef1c k\u1eb9p s\u1ebd truy\u1ec1n qua m\u1ed9t v\u00f9ng ch\u1ecbu l\u1ef1c nh\u1ecf. N\u1ebfu b\u1ec1 m\u1eb7t \u0111\u00f3 m\u1ec1m, nh\u00e1m, c\u00f3 r\u00e3nh, s\u01a1n, m\u1ea1 k\u1ebdm ho\u1eb7c kh\u00f4ng b\u1eb1ng ph\u1eb3ng th\u00ec m\u1ed1i n\u1ed1i c\u00f3 th\u1ec3 b\u1ecb l\u00fan ho\u1eb7c l\u00fan sau khi si\u1ebft ch\u1eb7t.<\/p>\n\n\n\n<p>Vi\u1ec7c gi\u1ea3i quy\u1ebft \u0111\u00f3 l\u00e0m gi\u1ea3m t\u1ea3i tr\u01b0\u1edbc. Sau khi t\u1ea3i tr\u01b0\u1edbc gi\u1ea3m xu\u1ed1ng, rung \u0111\u1ed9ng v\u00e0 chuy\u1ec3n \u0111\u1ed9ng b\u00ean c\u00f3 th\u1ec3 b\u1eaft \u0111\u1ea7u l\u00e0m l\u1ecfng c\u1ee5m.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Ch\u1ee9c n\u0103ng gi\u1eb7t ph\u1eb3ng<\/th><th>Hi\u1ec7u qu\u1ea3 th\u1ef1c t\u1ebf<\/th><\/tr><\/thead><tbody><tr><td>T\u1ea3i tr\u1ea3i \u0111\u1ec1u<\/td><td>Gi\u1ea3m s\u1ef1 nghi\u1ec1n n\u00e1t b\u1ec1 m\u1eb7t c\u1ee5c b\u1ed9<\/td><\/tr><tr><td>B\u1ea3o v\u1ec7 l\u1edbp ph\u1ee7<\/td><td>H\u1ea1n ch\u1ebf h\u01b0 h\u1ecfng d\u01b0\u1edbi \u0111ai \u1ed1c ho\u1eb7c \u0111\u1ea7u bu l\u00f4ng<\/td><\/tr><tr><td>C\u1ea3i thi\u1ec7n ch\u1ed7 ng\u1ed3i<\/td><td>Cung c\u1ea5p m\u1ed9t m\u1eb7t ch\u1ecbu l\u1ef1c \u1ed5n \u0111\u1ecbnh h\u01a1n<\/td><\/tr><tr><td>C\u1ea7u l\u1ed7 l\u1edbn h\u01a1n<\/td><td>Tr\u1ee3 gi\u00fap v\u1ec1 c\u00e1c khe ho\u1eb7c l\u1ed7 qu\u00e1 kh\u1ed5 khi \u0111\u01b0\u1ee3c ch\u1ec9 \u0111\u1ecbnh<\/td><\/tr><tr><td>H\u1ed7 tr\u1ee3 th\u1eaft ch\u1eb7t t\u00ednh nh\u1ea5t qu\u00e1n<\/td><td>Gi\u1ea3m s\u1ef1 bi\u1ebfn \u0111\u1ed5i do b\u1ec1 m\u1eb7t g\u1ed3 gh\u1ec1 g\u00e2y ra<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>\u0110\u1ed1i v\u1edbi lo\u1ea1i v\u00e0 ch\u1ea5t li\u1ec7u v\u00f2ng \u0111\u1ec7m ti\u00eau chu\u1ea9n, ng\u01b0\u1eddi mua c\u00f3 th\u1ec3 xem x\u00e9t s\u1eb5n <a href=\"https:\/\/xzfastener.com\/vi\/fastener-type\/washers\/\">v\u00f2ng \u0111\u1ec7m c\u00f4ng nghi\u1ec7p<\/a>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">T\u1ea1i sao ph\u00e2n ph\u1ed1i t\u1ea3i \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn vi\u1ec7c n\u1edbi l\u1ecfng<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">M\u1ea5t t\u1ea3i tr\u01b0\u1edbc th\u01b0\u1eddng b\u1eaft \u0111\u1ea7u nh\u1ecf<\/h3>\n\n\n\n<p>Trong c\u00f4ng t\u00e1c ki\u1ec3m tra, nh\u1eefng bu l\u00f4ng b\u1ecb l\u1ecfng hi\u1ebfm khi k\u1ec3 l\u1ea1i to\u00e0n b\u1ed9 c\u00e2u chuy\u1ec7n. \u0110ai \u1ed1c c\u00f3 th\u1ec3 v\u1eabn c\u00f2n tr\u00ean s\u1ee3i ch\u1ec9. V\u00f2ng \u0111\u1ec7m c\u00f3 th\u1ec3 v\u1eabn c\u00f2n \u1edf \u0111\u00fang v\u1ecb tr\u00ed. Nh\u01b0ng kh\u1edbp \u0111\u00e3 m\u1ea5t l\u1ef1c k\u1eb9p.<\/p>\n\n\n\n<p>C\u00e1c nguy\u00ean nh\u00e2n ph\u1ed5 bi\u1ebfn bao g\u1ed3m:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>S\u01a1n ho\u1eb7c l\u1edbp ph\u1ee7 b\u1ecb nghi\u1ec1n n\u00e1t d\u01b0\u1edbi t\u1ea3i<\/li>\n\n\n\n<li>Nh\u00fang v\u1eadt li\u1ec7u n\u1ec1n m\u1ec1m<\/li>\n\n\n\n<li>Burrs ph\u1eb3ng sau khi c\u00e0i \u0111\u1eb7t<\/li>\n\n\n\n<li>\u0110\u1ed9 c\u1ee9ng c\u1ee7a v\u00f2ng \u0111\u1ec7m qu\u00e1 th\u1ea5p so v\u1edbi c\u1ea5p \u0111\u1ed9 bu l\u00f4ng<\/li>\n\n\n\n<li>L\u1ed7 qu\u00e1 kh\u1ed5 cho ph\u00e9p di chuy\u1ec3n kh\u1edbp<\/li>\n\n\n\n<li>Ti\u1ebfp x\u00fac k\u00e9m gi\u1eefa \u0111ai \u1ed1c, v\u00f2ng \u0111\u1ec7m v\u00e0 b\u1ec1 m\u1eb7t<\/li>\n<\/ul>\n\n\n\n<p>V\u00f2ng \u0111\u1ec7m ph\u1eb3ng kh\u00f4ng \u201ckh\u00f3a\u201d ch\u1ec9. N\u00f3 gi\u00fap kh\u1edbp gi\u1eef \u0111\u01b0\u1ee3c t\u00ecnh tr\u1ea1ng ch\u1ecbu l\u1ef1c \u1ed5n \u0111\u1ecbnh \u0111\u1ec3 t\u1ea3i tr\u01b0\u1edbc bu l\u00f4ng c\u00f3 c\u01a1 h\u1ed9i gi\u1eef nguy\u00ean v\u1ecb tr\u00ed d\u1ef1 \u0111\u1ecbnh t\u1ed1t h\u01a1n.<\/p>\n\n\n\n<p>\u0110\u1ec3 c\u00f3 c\u00e1i nh\u00ecn r\u1ed9ng h\u01a1n v\u1ec1 nguy\u00ean nh\u00e2n n\u1edbi l\u1ecfng, h\u00e3y xem h\u01b0\u1edbng d\u1eabn n\u00e0y v\u1ec1 <a href=\"https:\/\/xzfastener.com\/vi\/how-to-prevent-bolt-loosening-a-comprehensive-guide-to-fastener-security\/\">L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 ng\u0103n ch\u1eb7n vi\u1ec7c n\u1edbi l\u1ecfng bu l\u00f4ng<\/a>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">V\u00f2ng \u0111\u1ec7m ph\u1eb3ng \u1edf \u0111\u00e2u quan tr\u1ecdng nh\u1ea5t<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u1ee8ng d\u1ee5ng hi\u1ec7n tr\u01b0\u1eddng<\/h3>\n\n\n\n<p>V\u00f2ng \u0111\u1ec7m ph\u1eb3ng c\u00f3 gi\u00e1 tr\u1ecb nh\u1ea5t khi b\u1ec1 m\u1eb7t \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i c\u1ea7n \u0111\u01b0\u1ee3c b\u1ea3o v\u1ec7 ho\u1eb7c ph\u00e2n b\u1ed5 t\u1ea3i tr\u1ecdng.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u1ee8ng d\u1ee5ng<\/th><th>M\u1ed1i quan t\u00e2m v\u1ec1 v\u00f2ng \u0111\u1ec7m<\/th><\/tr><\/thead><tbody><tr><td>K\u1ebft c\u1ea5u th\u00e9p<\/td><td>\u0110\u1ed9 c\u1ee9ng c\u1ee7a v\u00f2ng \u0111\u1ec7m v\u00e0 lo\u1ea1i l\u1ed7<\/td><\/tr><tr><td>C\u0103n c\u1ee9 m\u00e1y m\u00f3c<\/td><td>Ch\u1ed7 ng\u1ed3i ph\u1eb3ng v\u00e0 ki\u1ec3m so\u00e1t \u0111\u1ed9 rung<\/td><\/tr><tr><td>g\u1eafn n\u0103ng l\u01b0\u1ee3ng m\u1eb7t tr\u1eddi<\/td><td>B\u1ea3o v\u1ec7 b\u1ec1 m\u1eb7t nh\u00f4m<\/td><\/tr><tr><td>Guardrails<\/td><td>HDG l\u1edbp ph\u1ee7 v\u00e0 \u0103n m\u00f2n ngo\u00e0i tr\u1eddi<\/td><\/tr><tr><td>L\u1ed7 c\u00f3 r\u00e3nh<\/td><td>\u0110\u00fang OD v\u00e0 \u0111\u1ed9 d\u00e0y<\/td><\/tr><tr><td>Ch\u1ea5t li\u1ec7u g\u1ed7 ho\u1eb7c m\u1ec1m<\/td><td>C\u00f3 th\u1ec3 c\u1ea7n v\u00f2ng \u0111\u1ec7m OD ho\u1eb7c ch\u1eafn b\u00f9n l\u1edbn<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>Tr\u00ean c\u00e1c m\u1ed1i n\u1ed1i k\u1ebft c\u1ea5u c\u00f3 \u0111\u1ed9 b\u1ec1n cao, vi\u1ec7c l\u1ef1a ch\u1ecdn v\u00f2ng \u0111\u1ec7m kh\u00f4ng ph\u1ea3i l\u00e0 \u0111i\u1ec1u d\u1ec5 d\u00e0ng. V\u00ed d\u1ee5, v\u00f2ng \u0111\u1ec7m c\u1ee9ng th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng v\u1edbi c\u00e1c h\u1ec7 th\u1ed1ng bu l\u00f4ng k\u1ebft c\u1ea5u. \u0110\u1ed1i v\u1edbi c\u00f4ng vi\u1ec7c nh\u1eb9 nh\u00e0ng th\u00f4ng th\u01b0\u1eddng, v\u00f2ng \u0111\u1ec7m ph\u1eb3ng ASTM F844 ho\u1eb7c DIN\/ISO c\u00f3 th\u1ec3 l\u00e0 \u0111\u1ee7, t\u00f9y thu\u1ed9c v\u00e0o thi\u1ebft k\u1ebf. (ASTM F436)<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Ch\u1ecdn v\u00f2ng \u0111\u1ec7m ph\u1eb3ng ph\u00f9 h\u1ee3p<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Gh\u00e9p V\u00f2ng \u0111\u1ec7m v\u1edbi Bu l\u00f4ng v\u00e0 B\u1ec1 m\u1eb7t<\/h3>\n\n\n\n<p>Kh\u00f4ng ch\u1ecdn v\u00f2ng \u0111\u1ec7m ch\u1ec9 theo \u0111\u01b0\u1eddng k\u00ednh trong. Ki\u1ec3m tra \u0111\u1ed9 c\u1ee9ng, \u0111\u01b0\u1eddng k\u00ednh ngo\u00e0i, \u0111\u1ed9 d\u00e0y, v\u1eadt li\u1ec7u v\u00e0 l\u1edbp ph\u1ee7.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Y\u1ebfu t\u1ed1 l\u1ef1a ch\u1ecdn<\/th><th>Nh\u1eefng g\u00ec c\u1ea7n ki\u1ec3m tra<\/th><\/tr><\/thead><tbody><tr><td>\u0110\u01b0\u1eddng k\u00ednh trong<\/td><td>Ph\u00f9 h\u1ee3p v\u1edbi bu l\u00f4ng m\u00e0 kh\u00f4ng c\u00f3 khe h\u1edf qu\u00e1 m\u1ee9c<\/td><\/tr><tr><td>\u0110\u01b0\u1eddng k\u00ednh ngo\u00e0i<\/td><td>Che l\u1ed7 v\u00e0 tr\u1ea3i t\u1ea3i \u0111\u00fang c\u00e1ch<\/td><\/tr><tr><td>Thickness<\/td><td>Ch\u1ed1ng u\u1ed1n cong ho\u1eb7c bi\u1ebfn d\u1ea1ng<\/td><\/tr><tr><td>Hardness<\/td><td>Ph\u00f9 h\u1ee3p v\u1edbi c\u01b0\u1eddng \u0111\u1ed9 bu l\u00f4ng v\u00e0 m\u1ee9c t\u1ea3i tr\u01b0\u1edbc<\/td><\/tr><tr><td>V\u1eadt li\u1ec7u<\/td><td>T\u01b0\u01a1ng th\u00edch v\u1edbi bu l\u00f4ng v\u00e0 v\u1eadt li\u1ec7u c\u01a1 b\u1ea3n<\/td><\/tr><tr><td>L\u1edbp ph\u1ee7<\/td><td>Ph\u00f9 h\u1ee3p v\u1edbi m\u00f4i tr\u01b0\u1eddng \u0103n m\u00f2n<\/td><\/tr><tr><td>Ti\u00eau chu\u1ea9n<\/td><td>DIN 125, ISO 7089, ISO 7090, ASTM F436, ASTM F844<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>\u0110\u1ed1i v\u1edbi c\u00e1c m\u1ed1i n\u1ed1i ch\u1ecbu t\u1ea3i n\u1eb7ng, h\u00e3y so s\u00e1nh c\u00e1c y\u00eau c\u1ea7u v\u1ec1 v\u00f2ng \u0111\u1ec7m v\u1edbi <a href=\"https:\/\/xzfastener.com\/vi\/products-category\/high-strength-fasteners\/\">\u1ed1c v\u00edt c\u01b0\u1eddng \u0111\u1ed9 cao<\/a> tr\u01b0\u1edbc khi ph\u00ea duy\u1ec7t \u0111\u1ea1i h\u1ed9i.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Nh\u1eefng sai l\u1ea7m ph\u1ed5 bi\u1ebfn t\u00f4i th\u1ea5y trong l\u0129nh v\u1ef1c n\u00e0y<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">V\u00f2ng \u0111\u1ec7m ph\u1eb3ng l\u1ea1m d\u1ee5ng<\/h3>\n\n\n\n<p>Sai l\u1ea7m ph\u1ed5 bi\u1ebfn nh\u1ea5t l\u00e0 s\u1eed d\u1ee5ng v\u00f2ng \u0111\u1ec7m m\u1ec1m d\u01b0\u1edbi bu l\u00f4ng c\u01b0\u1eddng \u0111\u1ed9 cao. V\u00f2ng \u0111\u1ec7m bi\u1ebfn d\u1ea1ng trong qu\u00e1 tr\u00ecnh si\u1ebft ch\u1eb7t ho\u1eb7c sau chu k\u1ef3 t\u1ea3i. Tr\u00ecnh c\u00e0i \u0111\u1eb7t nh\u00ecn th\u1ea5y gi\u00e1 tr\u1ecb m\u00f4-men xo\u1eafn, nh\u01b0ng sau \u0111\u00f3 kh\u1edbp s\u1ebd m\u1ea5t t\u1ea3i tr\u01b0\u1edbc.<\/p>\n\n\n\n<p>C\u00e1c sai l\u1ea7m kh\u00e1c bao g\u1ed3m:<\/p>\n\n\n\n<ol start=\"1\" class=\"wp-block-list\">\n<li>S\u1eed d\u1ee5ng v\u00f2ng \u0111\u1ec7m m\u1ecfng tr\u00ean c\u00e1c l\u1ed7 c\u00f3 r\u00e3nh l\u1edbn.<\/li>\n\n\n\n<li>Tr\u1ed9n v\u00f2ng \u0111\u1ec7m m\u1ea1 k\u1ebdm v\u1edbi bu l\u00f4ng m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng.<\/li>\n\n\n\n<li>Ch\u1ec9 l\u1eafp \u0111\u1eb7t v\u00f2ng \u0111\u1ec7m \u1edf m\u1ed9t b\u00ean khi b\u1ea3n v\u1ebd y\u00eau c\u1ea7u c\u1ea3 hai.<\/li>\n\n\n\n<li>T\u00e1i s\u1eed d\u1ee5ng v\u00f2ng \u0111\u1ec7m b\u1ecb khum ho\u1eb7c h\u01b0 h\u1ecfng.<\/li>\n\n\n\n<li>Gi\u1ea3 s\u1eed v\u00f2ng \u0111\u1ec7m ph\u1eb3ng thay th\u1ebf \u0111ai \u1ed1c kh\u00f3a, v\u00f2ng \u0111\u1ec7m kh\u00f3a ho\u1eb7c ph\u01b0\u01a1ng ph\u00e1p \u0111i\u1ec1u khi\u1ec3n t\u1ea3i tr\u01b0\u1edbc.<\/li>\n\n\n\n<li>B\u1ecf qua \u0111\u1ed9 c\u1ee9ng c\u1ee7a v\u00f2ng \u0111\u1ec7m trong c\u00e1c m\u1ed1i n\u1ed1i k\u1ebft c\u1ea5u.<\/li>\n<\/ol>\n\n\n\n<p>L\u1edbp ph\u1ee7 c\u0169ng c\u00f3 v\u1ea5n \u0111\u1ec1. V\u00f2ng \u0111\u1ec7m m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng d\u00e0y c\u00f3 th\u1ec3 ho\u1ea1t \u0111\u1ed9ng kh\u00e1c v\u1edbi v\u00f2ng \u0111\u1ec7m tr\u01a1n ho\u1eb7c m\u1ea1 k\u1ebdm. \u0110\u1ed1i v\u1edbi c\u00e1c t\u1ed5 h\u1ee3p ngo\u00e0i tr\u1eddi, h\u00e3y xem l\u1ea1i <a href=\"https:\/\/xzfastener.com\/vi\/products-category\/various-coated-fasteners\/\">t\u00f9y ch\u1ecdn chi ti\u1ebft si\u1ebft ch\u1eb7t tr\u00e1ng<\/a> tr\u01b0\u1edbc khi ho\u00e0n thi\u1ec7n b\u1ed9 \u1ea3nh.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">V\u00f2ng \u0111\u1ec7m ph\u1eb3ng v\u00e0 thi\u1ebft b\u1ecb kh\u00f3a<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">C\u00f4ng vi\u1ec7c kh\u00e1c nhau, k\u1ebft qu\u1ea3 kh\u00e1c nhau<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Component<\/th><th>M\u1ee5c \u0111\u00edch ch\u00ednh<\/th><th>Vai tr\u00f2 n\u1edbi l\u1ecfng<\/th><\/tr><\/thead><tbody><tr><td>V\u00f2ng \u0111\u1ec7m ph\u1eb3ng<\/td><td>Ph\u00e2n ph\u1ed1i t\u1ea3i v\u00e0 b\u1ea3o v\u1ec7 b\u1ec1 m\u1eb7t<\/td><td>Gi\u00fap duy tr\u00ec t\u1ea3i tr\u01b0\u1edbc m\u1ed9t c\u00e1ch gi\u00e1n ti\u1ebfp<\/td><\/tr><tr><td>V\u00f2ng \u0111\u1ec7m m\u00f9a xu\u00e2n<\/td><td>Th\u00eam hi\u1ec7u \u1ee9ng m\u00f9a xu\u00e2n h\u1ea1n ch\u1ebf<\/td><td>Kh\u00f4ng \u0111\u00e1ng tin c\u1eady cho ri\u00eang rung \u0111\u1ed9ng nghi\u00eam tr\u1ecdng<\/td><\/tr><tr><td>V\u00f2ng \u0111\u1ec7m c\u00f3 r\u0103ng c\u01b0a<\/td><td>C\u1eafn v\u00e0o b\u1ec1 m\u1eb7t<\/td><td>C\u00f3 th\u1ec3 l\u00e0m h\u1ecfng l\u1edbp ph\u1ee7<\/td><\/tr><tr><td>\u0110ai \u1ed1c kh\u00f3a<\/td><td>Th\u00eam m\u00f4-men xo\u1eafn ho\u1eb7c kh\u00f3a c\u01a1 hi\u1ec7n h\u00e0nh<\/td><td>Ch\u1ed1ng n\u1edbi l\u1ecfng tr\u1ef1c ti\u1ebfp<\/td><\/tr><tr><td>V\u00f2ng \u0111\u1ec7m c\u1ee9ng<\/td><td>H\u1ed7 tr\u1ee3 t\u1ea3i tr\u01b0\u1edbc cao<\/td><td>Quan tr\u1ecdng trong c\u00e1c m\u1ed1i n\u1ed1i k\u1ebft c\u1ea5u<\/td><\/tr><tr><td>v\u00f2ng \u0111\u1ec7m DTI<\/td><td>Cho bi\u1ebft \u0111\u1ed9 c\u0103ng c\u1ee7a bu l\u00f4ng<\/td><td>Gi\u00fap x\u00e1c minh t\u1ea3i tr\u01b0\u1edbc c\u00e0i \u0111\u1eb7t<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>N\u1ebfu kh\u1edbp ph\u1ea3i ch\u1ecbu rung, s\u1ed1c ho\u1eb7c t\u1ea3i theo chu k\u1ef3, h\u00e3y s\u1eed d\u1ee5ng chi\u1ebfn l\u01b0\u1ee3c kh\u00f3a th\u00edch h\u1ee3p. V\u00f2ng \u0111\u1ec7m ph\u1eb3ng c\u00f3 th\u1ec3 h\u1ed7 tr\u1ee3 m\u1ed1i n\u1ed1i nh\u01b0ng n\u00f3 kh\u00f4ng ch\u1ecbu tr\u00e1ch nhi\u1ec7m ch\u1ed1ng l\u1ecfng ho\u00e0n to\u00e0n.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Ki\u1ec3m tra c\u00e0i \u0111\u1eb7t c\u00f3 v\u1ea5n \u0111\u1ec1<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Thanh tra vi\u00ean n\u00ean x\u00e1c nh\u1eadn \u0111i\u1ec1u g\u00ec<\/h3>\n\n\n\n<p>Tr\u01b0\u1edbc khi ch\u1ea5p nh\u1eadn l\u1eafp r\u00e1p b\u1eaft v\u00edt, h\u00e3y ki\u1ec3m tra:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Ti\u00eau chu\u1ea9n v\u00e0 k\u00edch th\u01b0\u1edbc v\u00f2ng \u0111\u1ec7m ph\u00f9 h\u1ee3p v\u1edbi b\u1ea3n v\u1ebd.<\/li>\n\n\n\n<li>\u0110\u1ed9 c\u1ee9ng c\u1ee7a v\u00f2ng \u0111\u1ec7m ph\u00f9 h\u1ee3p v\u1edbi lo\u1ea1i bu l\u00f4ng.<\/li>\n\n\n\n<li>V\u00f2ng \u0111\u1ec7m n\u1eb1m ph\u1eb3ng v\u1edbi s\u1ef1 ti\u1ebfp x\u00fac \u0111\u1ea7y \u0111\u1ee7.<\/li>\n\n\n\n<li>L\u1edbp ph\u1ee7 kh\u00f4ng b\u1ecb d\u1eadp, bong tr\u00f3c ho\u1eb7c h\u01b0 h\u1ecfng n\u1eb7ng.<\/li>\n\n\n\n<li>\u0110ai \u1ed1c ch\u1ea1y t\u1ef1 do tr\u01b0\u1edbc khi si\u1ebft ch\u1eb7t l\u1ea7n cu\u1ed1i.<\/li>\n\n\n\n<li>Ph\u01b0\u01a1ng ph\u00e1p m\u00f4-men xo\u1eafn ho\u1eb7c l\u1ef1c c\u0103ng tu\u00e2n theo quy tr\u00ecnh \u0111\u00e3 \u0111\u01b0\u1ee3c ph\u00ea duy\u1ec7t.<\/li>\n\n\n\n<li>C\u00e1c l\u1ed7 c\u00f3 r\u00e3nh ho\u1eb7c qu\u00e1 kh\u1ed5 s\u1eed d\u1ee5ng lo\u1ea1i v\u00f2ng \u0111\u1ec7m \u0111\u01b0\u1ee3c ch\u1ec9 \u0111\u1ecbnh.<\/li>\n<\/ul>\n\n\n\n<p>\u0110\u1ed1i v\u1edbi c\u00e1c kh\u1edbp nh\u1ea1y c\u1ea3m v\u1edbi t\u1ea3i tr\u01b0\u1edbc, \u0111i\u1ec1u n\u00e0y <a href=\"https:\/\/xzfastener.com\/vi\/understanding-fastener-torque-tension-relationship-best-practices-for-engineers\/\">h\u01b0\u1edbng d\u1eabn c\u0103ng m\u00f4-men xo\u1eafn<\/a> l\u00e0 m\u1ed9t t\u00e0i li\u1ec7u tham kh\u1ea3o h\u1eefu \u00edch.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">B\u00e0i h\u1ecdc cu\u1ed1i c\u00f9ng<\/h2>\n\n\n\n<p>V\u00f2ng \u0111\u1ec7m ph\u1eb3ng kh\u00f4ng ng\u1eebng n\u1edbi l\u1ecfng m\u1ed9t c\u00e1ch k\u1ef3 di\u1ec7u. Ch\u00fang gi\u00fap kh\u1edbp gi\u1eef \u0111\u01b0\u1ee3c b\u1ec1 m\u1eb7t ch\u1ecbu l\u1ef1c \u1ed5n \u0111\u1ecbnh, b\u1ea3o v\u1ec7 v\u1eadt li\u1ec7u \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i v\u00e0 gi\u1ea3m t\u1ed5n th\u1ea5t t\u1ea3i tr\u01b0\u1edbc do nh\u00fang ho\u1eb7c h\u01b0 h\u1ecfng b\u1ec1 m\u1eb7t.<\/p>\n\n\n\n<p>Trong c\u00e1c h\u1ed9i \u0111\u1ed3ng th\u1ef1c s\u1ef1, \u0111i\u1ec1u \u0111\u00f3 v\u1eabn quan tr\u1ecdng. V\u00f2ng \u0111\u1ec7m ph\u1eb3ng ph\u00f9 h\u1ee3p l\u00e0 m\u1ed9t b\u1ed9 ph\u1eadn nh\u1ecf nh\u01b0ng n\u00f3 h\u1ed7 tr\u1ee3 h\u1ec7 th\u1ed1ng bu\u1ed9c ch\u1eb7t l\u1edbn h\u01a1n. Ch\u1ecdn n\u00f3 theo t\u1ea3i tr\u1ecdng, t\u00ecnh tr\u1ea1ng b\u1ec1 m\u1eb7t, lo\u1ea1i l\u1ed7, c\u1ea5p \u0111\u1ed9 bu l\u00f4ng, l\u1edbp ph\u1ee7 v\u00e0 ti\u00eau chu\u1ea9n. \u0110\u00f3 l\u00e0 c\u00e1ch m\u1ed9t v\u00f2ng \u0111\u1ec7m \u0111\u01a1n gi\u1ea3n gi\u00e0nh \u0111\u01b0\u1ee3c v\u1ecb tr\u00ed c\u1ee7a m\u00ecnh trong m\u1ed9t kh\u1edbp n\u1ed1i quan tr\u1ecdng.<\/p>","protected":false},"excerpt":{"rendered":"<p>On job sites, I still hear this question: \u201cDoes a flat washer stop a bolt from loosening?\u201d The short answer is no, not by itself. A flat washer is not a lock washer. Its main job is load distribution. But that does not make it unimportant. In many bolted joints, a correct flat washer helps [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[479],"tags":[492],"class_list":["post-7017","post","type-post","status-publish","format-standard","hentry","category-fastener-knowledge-library","tag-anti-loosening-vibration-resistance"],"acf":[],"_links":{"self":[{"href":"https:\/\/xzfastener.com\/vi\/wp-json\/wp\/v2\/posts\/7017","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/xzfastener.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/xzfastener.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/xzfastener.com\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/xzfastener.com\/vi\/wp-json\/wp\/v2\/comments?post=7017"}],"version-history":[{"count":1,"href":"https:\/\/xzfastener.com\/vi\/wp-json\/wp\/v2\/posts\/7017\/revisions"}],"predecessor-version":[{"id":7018,"href":"https:\/\/xzfastener.com\/vi\/wp-json\/wp\/v2\/posts\/7017\/revisions\/7018"}],"wp:attachment":[{"href":"https:\/\/xzfastener.com\/vi\/wp-json\/wp\/v2\/media?parent=7017"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/xzfastener.com\/vi\/wp-json\/wp\/v2\/categories?post=7017"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/xzfastener.com\/vi\/wp-json\/wp\/v2\/tags?post=7017"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}