{"id":6575,"date":"2021-12-09T18:04:12","date_gmt":"2021-12-09T10:04:12","guid":{"rendered":"https:\/\/xzfastener.com\/?p=6575"},"modified":"2026-06-17T18:05:50","modified_gmt":"2026-06-17T10:05:50","slug":"zinc-plating-and-hydrogen-embrittlement-risk-in-high-strength-bolts","status":"publish","type":"post","link":"https:\/\/xzfastener.com\/vi\/zinc-plating-and-hydrogen-embrittlement-risk-in-high-strength-bolts\/","title":{"rendered":"R\u1ee7i ro m\u1ea1 k\u1ebdm v\u00e0 hi\u1ec7n t\u01b0\u1ee3ng gi\u00f2n hydro \u1edf bu l\u00f4ng c\u01b0\u1eddng \u0111\u1ed9 cao"},"content":{"rendered":"<p>M\u1ea1 k\u1ebdm \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i v\u00ec n\u00f3 mang l\u1ea1i cho c\u00e1c \u1ed1c v\u00edt b\u1eb1ng th\u00e9p carbon v\u1ebb ngo\u00e0i s\u1ea1ch s\u1ebd v\u00e0 kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n c\u01a1 b\u1ea3n v\u1edbi chi ph\u00ed h\u1ee3p l\u00fd. \u0110\u1ed1i v\u1edbi nhi\u1ec1u bu l\u00f4ng \u0111a n\u0103ng, n\u00f3 ho\u1ea1t \u0111\u1ed9ng t\u1ed1t.<\/p>\n\n\n\n<p>M\u1ed1i lo ng\u1ea1i b\u1eaft \u0111\u1ea7u khi m\u1ea1 k\u1ebdm \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng cho bu l\u00f4ng c\u01b0\u1eddng \u0111\u1ed9 cao.<\/p>\n\n\n\n<p>Trong c\u00e1c lo\u1ea1i nh\u01b0 10.9 v\u00e0 12.9, ho\u1eb7c c\u00e1c lo\u1ea1i \u1ed1c v\u00edt b\u1eb1ng th\u00e9p c\u00f3 \u0111\u1ed9 c\u1ee9ng cao kh\u00e1c, hi\u1ec7n t\u01b0\u1ee3ng gi\u00f2n do hydro tr\u1edf th\u00e0nh m\u1ed9t r\u1ee7i ro th\u1ef1c s\u1ef1. Bu l\u00f4ng c\u00f3 th\u1ec3 v\u01b0\u1ee3t qua ki\u1ec3m tra k\u00edch th\u01b0\u1edbc, tr\u00f4ng s\u00e1ng s\u1ee7a, s\u1ea1ch s\u1ebd v\u00e0 l\u1eafp r\u00e1p ch\u00ednh x\u00e1c. Sau \u0111\u00f3 n\u00f3 c\u00f3 th\u1ec3 b\u1ecb n\u1ee9t ho\u1eb7c g\u00e3y sau n\u00e0y khi ch\u1ecbu t\u1ea3i.<\/p>\n\n\n\n<p>\u0110\u00f3 l\u00e0 l\u00fd do t\u1ea1i sao ng\u01b0\u1eddi mua n\u00ean coi vi\u1ec7c m\u1ea1 k\u1ebdm tr\u00ean bu l\u00f4ng c\u01b0\u1eddng \u0111\u1ed9 cao nh\u01b0 m\u1ed9t quy tr\u00ecnh \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t ch\u1ee9 kh\u00f4ng ph\u1ea3i l\u00e0 vi\u1ec7c ho\u00e0n thi\u1ec7n b\u1ec1 m\u1eb7t \u0111\u01a1n gi\u1ea3n.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u0110\u1ed9 gi\u00f2n hydro l\u00e0 g\u00ec?<\/h2>\n\n\n\n<p>Hi\u1ec7n t\u01b0\u1ee3ng gi\u00f2n hydro x\u1ea3y ra khi hydro x\u00e2m nh\u1eadp v\u00e0o th\u00e9p c\u01b0\u1eddng \u0111\u1ed9 cao v\u00e0 l\u00e0m gi\u1ea3m kh\u1ea3 n\u0103ng ch\u1ecbu \u1ee9ng su\u1ea5t c\u1ee7a th\u00e9p. Chi ti\u1ebft si\u1ebft ch\u1eb7t c\u00f3 th\u1ec3 tr\u1edf n\u00ean gi\u00f2n h\u01a1n v\u00e0 c\u00f3 th\u1ec3 b\u1ecb h\u1ecfng \u0111\u1ed9t ng\u1ed9t d\u01b0\u1edbi t\u1ea3i tr\u1ecdng k\u00e9o d\u00e0i.<\/p>\n\n\n\n<p>S\u1ef1 th\u1ea5t b\u1ea1i n\u00e0y c\u00f3 th\u1ec3 b\u1ecb tr\u00ec ho\u00e3n. Trong m\u1ed9t s\u1ed1 tr\u01b0\u1eddng h\u1ee3p, bu-l\u00f4ng b\u1ecb g\u00e3y v\u00e0i gi\u1edd ho\u1eb7c v\u00e0i ng\u00e0y sau khi l\u1eafp \u0111\u1eb7t.<\/p>\n\n\n\n<p>\u0110\u1ed1i v\u1edbi ng\u01b0\u1eddi mua t\u00ecm ngu\u1ed3n cung \u1ee9ng <a href=\"https:\/\/xzfastener.com\/vi\/products-category\/high-strength-fasteners\/\">\u1ed1c v\u00edt c\u01b0\u1eddng \u0111\u1ed9 cao<\/a>, r\u1ee7i ro n\u00e0y c\u1ea7n \u0111\u01b0\u1ee3c th\u1ea3o lu\u1eadn tr\u01b0\u1edbc khi s\u1ea3n xu\u1ea5t, \u0111\u1eb7c bi\u1ec7t khi c\u00f3 y\u00eau c\u1ea7u m\u1ea1 \u0111i\u1ec7n.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">T\u1ea1i sao m\u1ea1 k\u1ebdm c\u00f3 th\u1ec3 l\u00e0m t\u0103ng r\u1ee7i ro<\/h2>\n\n\n\n<p>M\u1ea1 \u0111i\u1ec7n k\u1ebdm th\u01b0\u1eddng bao g\u1ed3m l\u00e0m s\u1ea1ch, t\u1ea9y axit, l\u1eafng \u0111\u1ecdng \u0111i\u1ec7n h\u00f3a v\u00e0 x\u1eed l\u00fd sau. Trong c\u00e1c b\u01b0\u1edbc n\u00e0y, hydro c\u00f3 th\u1ec3 x\u00e2m nh\u1eadp v\u00e0o b\u1ec1 m\u1eb7t th\u00e9p.<\/p>\n\n\n\n<p>Bu l\u00f4ng c\u01b0\u1eddng \u0111\u1ed9 cao nh\u1ea1y c\u1ea3m h\u01a1n v\u00ec \u0111\u1ed9 c\u1ee9ng v\u00e0 \u0111\u1ed9 b\u1ec1n k\u00e9o c\u1ee7a ch\u00fang khi\u1ebfn kh\u1ea3 n\u0103ng ch\u1ecbu \u0111\u1ef1ng v\u1ebft n\u1ee9t li\u00ean quan \u0111\u1ebfn hydro \u00edt h\u01a1n.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">C\u00e1c y\u1ebfu t\u1ed1 r\u1ee7i ro ch\u00ednh<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Y\u1ebfu t\u1ed1 r\u1ee7i ro<\/th><th>T\u1ea1i sao n\u00f3 quan tr\u1ecdng<\/th><\/tr><\/thead><tbody><tr><td>\u0110\u1ed9 b\u1ec1n ho\u1eb7c \u0111\u1ed9 c\u1ee9ng c\u1ee7a bu l\u00f4ng cao<\/td><td>T\u0103ng kh\u1ea3 n\u0103ng b\u1ecb n\u1ee9t ch\u1eadm<\/td><\/tr><tr><td>L\u00e0m s\u1ea1ch b\u1eb1ng axit ho\u1eb7c t\u1ea9y chua<\/td><td>C\u00f3 th\u1ec3 gi\u1edbi thi\u1ec7u hydro tr\u01b0\u1edbc khi m\u1ea1<\/td><\/tr><tr><td>Qu\u00e1 tr\u00ecnh m\u1ea1 \u0111i\u1ec7n<\/td><td>C\u00f3 th\u1ec3 th\u00eam nhi\u1ec1u hydro h\u01a1n trong qu\u00e1 tr\u00ecnh l\u1eafng \u0111\u1ecdng<\/td><\/tr><tr><td>T\u1ea3i tr\u01b0\u1edbc \u0111\u1ed9 th\u1eaft ch\u1eb7t cao<\/td><td>Th\u00eam c\u0103ng th\u1eb3ng k\u00e9o d\u00e0i<\/td><\/tr><tr><td>Ki\u1ec3m so\u00e1t n\u01b0\u1edbng k\u00e9m<\/td><td>Hydro c\u00f3 th\u1ec3 kh\u00f4ng \u0111\u01b0\u1ee3c gi\u1ea3i ph\u00f3ng \u0111\u00fang c\u00e1ch<\/td><\/tr><tr><td>L\u1ef1a ch\u1ecdn l\u1edbp ph\u1ee7 sai<\/td><td>C\u00f3 th\u1ec3 l\u00e0m t\u0103ng r\u1ee7i ro cho \u1ee9ng d\u1ee5ng<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>\u0110i\u1ec1u nguy hi\u1ec3m l\u00e0 kh\u00f4ng ph\u1ea3i l\u00fac n\u00e0o c\u0169ng c\u00f3 th\u1ec3 nh\u00ecn th\u1ea5y \u0111\u01b0\u1ee3c s\u1ef1 gi\u00f2n do hydro. M\u1ed9t bu l\u00f4ng m\u1ea1 c\u00f3 th\u1ec3 tr\u00f4ng ch\u1ea5p nh\u1eadn \u0111\u01b0\u1ee3c nh\u01b0ng v\u1eabn \u1ea9n ch\u1ee9a r\u1ee7i ro.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Bu l\u00f4ng n\u00e0o c\u1ea7n \u0111\u01b0\u1ee3c ch\u00fa \u00fd th\u00eam?<\/h2>\n\n\n\n<p>Kh\u00f4ng ph\u1ea3i m\u1ecdi chi ti\u1ebft si\u1ebft ch\u1eb7t m\u1ea1 k\u1ebdm \u0111\u1ec1u c\u00f3 m\u1ee9c \u0111\u1ed9 r\u1ee7i ro nh\u01b0 nhau. Bu l\u00f4ng th\u00f4ng th\u01b0\u1eddng c\u00f3 \u0111\u1ed9 b\u1ec1n th\u1ea5p th\u01b0\u1eddng \u00edt nh\u1ea1y c\u1ea3m h\u01a1n. Ch\u1ed1t c\u00f3 \u0111\u1ed9 b\u1ec1n cao v\u00e0 c\u1ee9ng \u0111\u00f2i h\u1ecfi ph\u1ea3i ki\u1ec3m so\u00e1t nhi\u1ec1u h\u01a1n.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">So s\u00e1nh r\u1ee7i ro th\u1ef1c t\u1ebf<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Lo\u1ea1i chi ti\u1ebft si\u1ebft ch\u1eb7t<\/th><th>M\u1ee9c \u0111\u1ed9 r\u1ee7i ro \u0111i\u1ec3n h\u00ecnh<\/th><th>H\u00e0nh \u0111\u1ed9ng c\u1ee7a ng\u01b0\u1eddi mua<\/th><\/tr><\/thead><tbody><tr><td>L\u1edbp 4.8 \/ 5.8 bu l\u00f4ng<\/td><td>Th\u1ea5p<\/td><td>Ki\u1ec3m so\u00e1t m\u1ea1 ti\u00eau chu\u1ea9n th\u01b0\u1eddng l\u00e0 \u0111\u1ee7<\/td><\/tr><tr><td>L\u1edbp 8.8 bu l\u00f4ng<\/td><td>Moderate<\/td><td>Ki\u1ec3m tra qu\u00e1 tr\u00ecnh \u1ee9ng d\u1ee5ng v\u00e0 m\u1ea1<\/td><\/tr><tr><td>L\u1edbp 10.9 bu l\u00f4ng<\/td><td>Cao<\/td><td>Y\u00eau c\u1ea7u k\u1ebf ho\u1ea1ch ki\u1ec3m tra v\u00e0 ki\u1ec3m so\u00e1t \u0111\u1ed9 gi\u00f2n<\/td><\/tr><tr><td>L\u1edbp 12.9 bu l\u00f4ng<\/td><td>R\u1ea5t cao<\/td><td>Xem x\u00e9t c\u00e1c l\u1ef1a ch\u1ecdn thay th\u1ebf ho\u1eb7c ki\u1ec3m so\u00e1t quy tr\u00ecnh nghi\u00eam ng\u1eb7t<\/td><\/tr><tr><td>V\u00edt \u0111\u01b0\u1ee3c l\u00e0m c\u1ee9ng b\u1ec1 m\u1eb7t<\/td><td>Cao<\/td><td>X\u00e1c nh\u1eadn c\u00e1c y\u00eau c\u1ea7u v\u1ec1 m\u1ea1 v\u00e0 ch\u1ea1m n\u1ed5i<\/td><\/tr><tr><td>Bu l\u00f4ng ch\u1ecbu t\u1ea3i quan tr\u1ecdng<\/td><td>Cao<\/td><td>X\u00e1c \u0111\u1ecbnh ki\u1ec3m tra v\u00e0 t\u00e0i li\u1ec7u tr\u01b0\u1edbc khi \u0111\u1eb7t h\u00e0ng<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>N\u1ebfu \u1ee9ng d\u1ee5ng c\u00f3 t\u1ea3i tr\u1ecdng quan tr\u1ecdng, nh\u1ea1y c\u1ea3m v\u1edbi \u0111\u1ed9 rung ho\u1eb7c li\u00ean quan \u0111\u1ebfn an to\u00e0n, kh\u00f4ng ch\u1ea5p nh\u1eadn vi\u1ec7c m\u1ea1 k\u1ebdm m\u1ed9t c\u00e1ch t\u00f9y ti\u1ec7n.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">N\u01b0\u1edbng sau khi m\u1ea1<\/h2>\n\n\n\n<p>N\u01b0\u1edbng th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 gi\u1ea3m nguy c\u01a1 gi\u00f2n do hydro sau khi m\u1ea1. N\u00f3 th\u01b0\u1eddng \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n ngay sau khi m\u1ea1 v\u00e0 tr\u01b0\u1edbc khi c\u00e1c b\u1ed9 ph\u1eadn \u0111\u01b0\u1ee3c \u0111\u01b0a v\u00e0o s\u1eed d\u1ee5ng.<\/p>\n\n\n\n<p>Nhi\u1ec7t \u0111\u1ed9, th\u1eddi gian v\u00e0 th\u1eddi gian n\u01b0\u1edbng ch\u00ednh x\u00e1c ph\u1ea3i tu\u00e2n theo ti\u00eau chu\u1ea9n hi\u1ec7n h\u00e0nh, \u0111i\u1ec1u ki\u1ec7n v\u1eadt li\u1ec7u, c\u1ea5p chi ti\u1ebft si\u1ebft ch\u1eb7t v\u00e0 y\u00eau c\u1ea7u c\u1ee7a d\u1ef1 \u00e1n.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Nh\u1eefng g\u00ec ng\u01b0\u1eddi mua n\u00ean x\u00e1c nh\u1eadn<\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Li\u1ec7u vi\u1ec7c n\u01b0\u1edbng c\u00f3 c\u1ea7n thi\u1ebft cho c\u1ea5p \u0111\u1ed9 bu l\u00f4ng hay kh\u00f4ng.<\/li>\n\n\n\n<li>Bao l\u00e2u th\u00ec n\u01b0\u1edbng xong sau khi m\u1ea1.<\/li>\n\n\n\n<li>Nhi\u1ec7t \u0111\u1ed9 v\u00e0 th\u1eddi gian n\u01b0\u1edbng.<\/li>\n\n\n\n<li>Cho d\u00f9 h\u1ed3 s\u01a1 c\u00f3 s\u1eb5n.<\/li>\n\n\n\n<li>Li\u1ec7u l\u00f4 m\u1ea1 c\u00f3 th\u1ec3 truy nguy\u00ean \u0111\u01b0\u1ee3c hay kh\u00f4ng.<\/li>\n\n\n\n<li>Li\u1ec7u c\u00f3 c\u1ea7n ph\u1ea3i ki\u1ec3m tra \u0111\u1ed9 gi\u00f2n hay kh\u00f4ng.<\/li>\n<\/ol>\n\n\n\n<p>N\u01b0\u1edbng b\u00e1nh gi\u00fap gi\u1ea3m r\u1ee7i ro nh\u01b0ng kh\u00f4ng l\u00e0m cho m\u1ecdi quy tr\u00ecnh t\u1ef1 \u0111\u1ed9ng tr\u1edf n\u00ean an to\u00e0n. V\u1eabn c\u1ea7n ph\u1ea3i ki\u1ec3m so\u00e1t t\u1ed1t v\u1eadt li\u1ec7u, chu\u1ea9n b\u1ecb b\u1ec1 m\u1eb7t, ki\u1ec3m so\u00e1t l\u1edbp m\u1ea1 v\u00e0 ki\u1ec3m tra.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">M\u1ea1 k\u1ebdm v\u00e0 c\u00e1c l\u1edbp ph\u1ee7 thay th\u1ebf<\/h2>\n\n\n\n<p>\u0110\u1ed1i v\u1edbi m\u1ed9t s\u1ed1 \u1ee9ng d\u1ee5ng bu l\u00f4ng c\u01b0\u1eddng \u0111\u1ed9 cao, ng\u01b0\u1eddi mua c\u00f3 th\u1ec3 xem x\u00e9t c\u00e1c l\u1edbp ph\u1ee7 kh\u00e1c ngo\u00e0i m\u1ea1 \u0111i\u1ec7n k\u1ebdm truy\u1ec1n th\u1ed1ng.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Ho\u00e0n thi\u1ec7n \/ L\u1edbp ph\u1ee7<\/th><th>S\u1eed d\u1ee5ng \u0111i\u1ec3n h\u00ecnh<\/th><th>M\u1ed1i quan t\u00e2m c\u1ee7a ng\u01b0\u1eddi mua<\/th><\/tr><\/thead><tbody><tr><td>M\u1ea1 k\u1ebdm<\/td><td>B\u1ea3o v\u1ec7 ch\u1ed1ng \u0103n m\u00f2n chung<\/td><td>C\u1ea7n ki\u1ec3m so\u00e1t \u0111\u1ed9 gi\u00f2n hydro<\/td><\/tr><tr><td>M\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng<\/td><td>K\u1ebft c\u1ea5u th\u00e9p ngo\u00e0i tr\u1eddi<\/td><td>\u0110\u1ed9 v\u1eeba v\u1eb7n c\u1ee7a ren v\u00e0 \u0111\u1ed9 d\u00e0y l\u1edbp ph\u1ee7<\/td><\/tr><tr><td>L\u1edbp m\u1ea1 k\u1ebdm\/l\u1edbp ph\u1ee7 d\u1ea1ng Dacromet<\/td><td>\u1ed0c v\u00edt c\u01b0\u1eddng \u0111\u1ed9 cao ch\u1ed1ng \u0103n m\u00f2n<\/td><td>Ki\u1ec3m so\u00e1t th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt ma s\u00e1t v\u00e0 l\u1edbp ph\u1ee7<\/td><\/tr><tr><td>Photphat v\u00e0 d\u1ea7u<\/td><td>S\u1eed d\u1ee5ng trong nh\u00e0 c\u00f3 ki\u1ec3m so\u00e1t<\/td><td>Kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n h\u1ea1n ch\u1ebf<\/td><\/tr><tr><td>\u0110\u1ed3ng b\u1eb1ng\/c\u00f3 d\u1ea7u<\/td><td>B\u1ea3o v\u1ec7 t\u1ea1m th\u1eddi ho\u1eb7c trong nh\u00e0<\/td><td>Kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n l\u00e2u d\u00e0i k\u00e9m<\/td><\/tr><tr><td>Th\u00e9p kh\u00f4ng g\u1ec9<\/td><td>M\u00f4i tr\u01b0\u1eddng nh\u1ea1y c\u1ea3m v\u1edbi \u0103n m\u00f2n<\/td><td>S\u1ee9c m\u1ea1nh v\u00e0 s\u1ef1 phi th\u01b0\u1eddng ph\u1ea3i \u0111\u01b0\u1ee3c xem x\u00e9t l\u1ea1i<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>\u0110\u1ed1i v\u1edbi m\u00f4i tr\u01b0\u1eddng ngo\u00e0i tr\u1eddi ho\u1eb7c kh\u1eafc nghi\u1ec7t, ng\u01b0\u1eddi mua n\u00ean so s\u00e1nh <a href=\"https:\/\/xzfastener.com\/vi\/products-category\/various-coated-fasteners\/\">\u1ed1c v\u00edt tr\u00e1ng<\/a> tr\u01b0\u1edbc khi quy\u1ebft \u0111\u1ecbnh k\u1ebft th\u00fac.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Nh\u1eefng sai l\u1ea7m ph\u1ed5 bi\u1ebfn c\u1ee7a ng\u01b0\u1eddi mua<\/h2>\n\n\n\n<p>H\u1ea7u h\u1ebft c\u00e1c v\u1ea5n \u0111\u1ec1 \u0111\u1ec1u b\u1eaft \u0111\u1ea7u \u1edf giai \u0111o\u1ea1n RFQ.<\/p>\n\n\n\n<p>H\u00e3y tr\u00e1nh nh\u1eefng sai l\u1ea7m sau:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Y\u00eau c\u1ea7u \u201cbu l\u00f4ng m\u1ea1 k\u1ebdm\u201d m\u00e0 kh\u00f4ng th\u1ea3o lu\u1eadn v\u1ec1 nguy c\u01a1 gi\u00f2n do hydro. (12.9)<\/li>\n\n\n\n<li>Ch\u1ecdn m\u1ea1 ch\u1ec9 v\u00ec n\u00f3 r\u1ebb h\u01a1n c\u00e1c lo\u1ea1i s\u01a1n kh\u00e1c.<\/li>\n\n\n\n<li>B\u1ecf qua h\u1ed3 s\u01a1 n\u01b0\u1edbng b\u00e1nh.<\/li>\n\n\n\n<li>Kh\u00f4ng x\u00e1c \u0111\u1ecbnh \u0111\u1ed9 c\u1ee9ng, c\u1ea5p \u0111\u1ed9 ho\u1eb7c th\u1eed nghi\u1ec7m c\u01a1 h\u1ecdc.<\/li>\n\n\n\n<li>S\u1eed d\u1ee5ng c\u00e1c gi\u00e1 tr\u1ecb m\u00f4-men xo\u1eafn chung m\u00e0 kh\u00f4ng xem x\u00e9t ma s\u00e1t l\u1edbp ph\u1ee7.<\/li>\n\n\n\n<li>Tr\u1ed9n c\u00e1c bu l\u00f4ng c\u01b0\u1eddng \u0111\u1ed9 cao \u0111\u01b0\u1ee3c m\u1ea1 v\u1edbi c\u00e1c \u0111ai \u1ed1c ho\u1eb7c v\u00f2ng \u0111\u1ec7m kh\u00f4ng kh\u1edbp.<\/li>\n\n\n\n<li>Ph\u00ea duy\u1ec7t s\u1ea3n xu\u1ea5t m\u00e0 kh\u00f4ng x\u00e1c nh\u1eadn ki\u1ec3m so\u00e1t quy tr\u00ecnh.<\/li>\n<\/ul>\n\n\n\n<p>\u0110\u1ed1i v\u1edbi c\u00e1c y\u00eau c\u1ea7u \u0111\u1eb7c bi\u1ec7t, <a href=\"https:\/\/xzfastener.com\/vi\/products-category\/custom-non-standard-fasteners\/\">\u1ed1c v\u00edt phi ti\u00eau chu\u1ea9n t\u00f9y ch\u1ec9nh<\/a> ph\u1ea3i \u0111\u01b0\u1ee3c tr\u00edch d\u1eabn v\u1edbi c\u00e1c y\u00eau c\u1ea7u r\u00f5 r\u00e0ng v\u1ec1 v\u1eadt li\u1ec7u, c\u1ea5p \u0111\u1ed9, \u0111\u1ed9 ho\u00e0n thi\u1ec7n, th\u1eed nghi\u1ec7m v\u00e0 truy xu\u1ea5t ngu\u1ed3n g\u1ed1c.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">RFQ Danh s\u00e1ch ki\u1ec3m tra cho bu l\u00f4ng c\u01b0\u1eddng \u0111\u1ed9 cao m\u1ea1 k\u1ebdm<\/h2>\n\n\n\n<p>Tr\u01b0\u1edbc khi \u0111\u1eb7t h\u00e0ng, h\u00e3y x\u00e1c nh\u1eadn:<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>RFQ M\u1ee5c<\/th><th>Nh\u1eefng g\u00ec c\u1ea7n ch\u1ec9 \u0111\u1ecbnh<\/th><\/tr><\/thead><tbody><tr><td>Ti\u00eau chu\u1ea9n<\/td><td>DIN, ISO, ASTM, ANSI, ho\u1eb7c b\u1ea3n v\u1ebd<\/td><\/tr><tr><td>L\u1edbp bu l\u00f4ng<\/td><td>8.8, 10.9, 12.9, B7, ho\u1eb7c c\u1ea5p \u0111\u1ed9 d\u1ef1 \u00e1n<\/td><\/tr><tr><td>V\u1eadt li\u1ec7u<\/td><td>Lo\u1ea1i th\u00e9p cacbon ho\u1eb7c th\u00e9p h\u1ee3p kim<\/td><\/tr><tr><td>B\u1ec1 m\u1eb7t ho\u00e0n thi\u1ec7n<\/td><td>Lo\u1ea1i m\u1ea1 k\u1ebdm v\u00e0 x\u1eed l\u00fd sau<\/td><\/tr><tr><td>Y\u00eau c\u1ea7u n\u01b0\u1edbng b\u00e1nh<\/td><td>Nhi\u1ec7t \u0111\u1ed9, th\u1eddi gian v\u00e0 th\u1eddi gian sau khi m\u1ea1<\/td><\/tr><tr><td>Ki\u1ec3m tra<\/td><td>\u0110\u1ed9 c\u1ee9ng, \u0111\u1ed9 b\u1ec1n k\u00e9o, \u0111\u1ed9 d\u00e0y l\u1edbp ph\u1ee7, ki\u1ec3m tra \u0111\u1ed9 gi\u00f2n n\u1ebfu \u0111\u01b0\u1ee3c y\u00eau c\u1ea7u<\/td><\/tr><tr><td>Assembly<\/td><td>Ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c lo\u1ea1i \u0111ai \u1ed1c, v\u00f2ng \u0111\u1ec7m v\u00e0 t\u00ecnh tr\u1ea1ng m\u00f4-men xo\u1eafn<\/td><\/tr><tr><td>\u1ee8ng d\u1ee5ng<\/td><td>T\u1ea3i tr\u1ecdng, \u0111\u1ed9 rung, \u0103n m\u00f2n v\u00e0 m\u1ee9c \u0111\u1ed9 an to\u00e0n<\/td><\/tr><tr><td>Documentation<\/td><td>MTC, bi\u00ean b\u1ea3n ki\u1ec3m tra, bi\u00ean b\u1ea3n m\u1ea1, bi\u00ean b\u1ea3n n\u01b0\u1edbng<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>Ng\u01b0\u1eddi mua c\u0169ng c\u00f3 th\u1ec3 xem l\u1ea1i to\u00e0n b\u1ed9 <a href=\"https:\/\/xzfastener.com\/vi\/home\/products\/\">s\u1ea3n ph\u1ea9m chi ti\u1ebft si\u1ebft ch\u1eb7t<\/a> ph\u1ea1m vi khi so s\u00e1nh bu l\u00f4ng, \u0111ai \u1ed1c, v\u00f2ng \u0111\u1ec7m, \u1ed1c v\u00edt, neo v\u00e0 thanh ren \u0111\u1ec3 l\u1eafp r\u00e1p ho\u00e0n ch\u1ec9nh.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">L\u1eddi khuy\u00ean cu\u1ed1i c\u00f9ng<\/h2>\n\n\n\n<p>M\u1ea1 k\u1ebdm r\u1ea5t h\u1eefu \u00edch nh\u01b0ng kh\u00f4ng ph\u1ea3i l\u00fac n\u00e0o c\u0169ng l\u00e0 l\u1ef1a ch\u1ecdn an to\u00e0n nh\u1ea5t cho bu l\u00f4ng c\u00f3 \u0111\u1ed9 b\u1ec1n cao. \u0110\u1ed9 b\u1ec1n v\u00e0 \u0111\u1ed9 c\u1ee9ng c\u00e0ng cao th\u00ec qu\u00e1 tr\u00ecnh m\u1ea1 c\u00e0ng ph\u1ea3i \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t c\u1ea9n th\u1eadn.<\/p>\n\n\n\n<p>\u0110\u1ed1i v\u1edbi c\u00e1c \u1ee9ng d\u1ee5ng quan tr\u1ecdng, ng\u01b0\u1eddi mua n\u00ean x\u00e1c \u0111\u1ecbnh c\u1ea5p \u0111\u1ed9 bu l\u00f4ng, v\u1eadt li\u1ec7u, l\u1edbp ph\u1ee7, y\u00eau c\u1ea7u n\u01b0\u1edbng, k\u1ebf ho\u1ea1ch ki\u1ec3m tra v\u00e0 t\u00e0i li\u1ec7u tr\u01b0\u1edbc khi s\u1ea3n xu\u1ea5t. M\u1ed9t b\u1ec1 m\u1eb7t m\u1ea1 s\u00e1ng l\u00e0 kh\u00f4ng \u0111\u1ee7. Chi ti\u1ebft si\u1ebft ch\u1eb7t ph\u1ea3i an to\u00e0n d\u01b0\u1edbi t\u1ea3i th\u1ef1c, m\u00f4-men xo\u1eafn th\u1ef1c v\u00e0 \u0111i\u1ec1u ki\u1ec7n s\u1eed d\u1ee5ng th\u1ef1c.<\/p>","protected":false},"excerpt":{"rendered":"<p>Zinc plating is widely used because it gives carbon steel fasteners a clean appearance and basic corrosion protection at a reasonable cost. For many general-purpose bolts, it works well. The concern begins when zinc plating is applied to high-strength bolts. In classes such as 10.9 and 12.9, or other high-hardness steel fasteners, hydrogen embrittlement becomes [&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":[504],"class_list":["post-6575","post","type-post","status-publish","format-standard","hentry","category-fastener-knowledge-library","tag-strength-grades-mechanical-properties"],"acf":[],"_links":{"self":[{"href":"https:\/\/xzfastener.com\/vi\/wp-json\/wp\/v2\/posts\/6575","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=6575"}],"version-history":[{"count":1,"href":"https:\/\/xzfastener.com\/vi\/wp-json\/wp\/v2\/posts\/6575\/revisions"}],"predecessor-version":[{"id":6576,"href":"https:\/\/xzfastener.com\/vi\/wp-json\/wp\/v2\/posts\/6575\/revisions\/6576"}],"wp:attachment":[{"href":"https:\/\/xzfastener.com\/vi\/wp-json\/wp\/v2\/media?parent=6575"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/xzfastener.com\/vi\/wp-json\/wp\/v2\/categories?post=6575"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/xzfastener.com\/vi\/wp-json\/wp\/v2\/tags?post=6575"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}