{"id":7120,"date":"2021-06-10T18:58:46","date_gmt":"2021-06-10T10:58:46","guid":{"rendered":"https:\/\/xzfastener.com\/?p=7120"},"modified":"2026-06-23T19:00:35","modified_gmt":"2026-06-23T11:00:35","slug":"decarburization-testing-in-high-strength-bolts-buyers-guide","status":"publish","type":"post","link":"https:\/\/xzfastener.com\/vi\/decarburization-testing-in-high-strength-bolts-buyers-guide\/","title":{"rendered":"Th\u1eed nghi\u1ec7m kh\u1eed cacbon \u1edf bu l\u00f4ng c\u01b0\u1eddng \u0111\u1ed9 cao: H\u01b0\u1edbng d\u1eabn cho ng\u01b0\u1eddi mua"},"content":{"rendered":"<p>Th\u1eed nghi\u1ec7m kh\u1eed cacbon \u1edf bu l\u00f4ng c\u01b0\u1eddng \u0111\u1ed9 cao kh\u00f4ng ph\u1ea3i l\u00e0 ch\u1ee7 \u0111\u1ec1 m\u00e0 h\u1ea7u h\u1ebft ng\u01b0\u1eddi mua h\u1ecfi \u0111\u1ebfn trong l\u1ea7n \u0111\u1ea7u ti\u00ean. H\u1ecd th\u01b0\u1eddng h\u1ecfi v\u1ec1 k\u00edch th\u01b0\u1edbc, c\u1ea5p \u0111\u1ed9, l\u1edbp ph\u1ee7, gi\u00e1 c\u1ea3 v\u00e0 th\u1eddi gian giao h\u00e0ng. \u0110i\u1ec1u \u0111\u00f3 c\u00f3 th\u1ec3 hi\u1ec3u \u0111\u01b0\u1ee3c. Nh\u01b0ng khi bu l\u00f4ng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong m\u00e1y m\u00f3c h\u1ea1ng n\u1eb7ng, k\u1ebft c\u1ea5u th\u00e9p, thi\u1ebft b\u1ecb ch\u1ecbu \u00e1p l\u1ef1c, h\u1ec7 th\u1ed1ng khai th\u00e1c m\u1ecf, n\u0103ng l\u01b0\u1ee3ng gi\u00f3 ho\u1eb7c c\u00e1c t\u1ed5 h\u1ee3p ch\u1ecbu t\u1ea3i cao kh\u00e1c, th\u00ec t\u00ecnh tr\u1ea1ng b\u1ec1 m\u1eb7t c\u1ee7a bu l\u00f4ng r\u1ea5t quan tr\u1ecdng. (RFQ)<\/p>\n\n\n\n<p>Bu l\u00f4ng c\u00f3 th\u1ec3 v\u01b0\u1ee3t qua c\u00e1c b\u01b0\u1edbc ki\u1ec3m tra k\u00edch th\u01b0\u1edbc c\u01a1 b\u1ea3n v\u00e0 v\u1eabn ti\u1ec1m \u1ea9n r\u1ee7i ro n\u1ebfu b\u1ec1 m\u1eb7t ren b\u1ecb suy y\u1ebfu trong qu\u00e1 tr\u00ecnh x\u1eed l\u00fd nhi\u1ec7t. \u0110\u00f3 l\u00e0 l\u00fac vi\u1ec7c th\u1eed nghi\u1ec7m kh\u1eed cacbon tr\u1edf n\u00ean quan tr\u1ecdng.<\/p>\n\n\n\n<p>\u0110\u1ed1i v\u1edbi ng\u01b0\u1eddi mua t\u00ecm ngu\u1ed3n cung \u1ee9ng s\u1ea3n ph\u1ea9m c\u00f3 t\u1ea3i tr\u1ecdng cao, XZ Fastener <a href=\"https:\/\/xzfastener.com\/vi\/products-category\/high-strength-fasteners\/\">\u1ed1c v\u00edt c\u01b0\u1eddng \u0111\u1ed9 cao<\/a> trang n\u00e0y l\u00e0 \u0111i\u1ec3m kh\u1edfi \u0111\u1ea7u thi\u1ebft th\u1ef1c \u0111\u1ec3 xem x\u00e9t c\u00e1c danh m\u1ee5c s\u1ea3n ph\u1ea9m ph\u1ed5 bi\u1ebfn.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Qu\u00e1 tr\u00ecnh kh\u1eed cacbon trong bu l\u00f4ng l\u00e0 g\u00ec?<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">M\u1ed9t v\u1ea5n \u0111\u1ec1 b\u1ec1 m\u1eb7t \u0111\u01b0\u1ee3c t\u1ea1o ra trong qu\u00e1 tr\u00ecnh x\u1eed l\u00fd nhi\u1ec7t<\/h3>\n\n\n\n<p>Qu\u00e1 tr\u00ecnh kh\u1eed cacbon x\u1ea3y ra khi carbon b\u1ecb m\u1ea5t kh\u1ecfi l\u1edbp b\u1ec1 m\u1eb7t th\u00e9p trong qu\u00e1 tr\u00ecnh nung. \u1ede bu l\u00f4ng c\u01b0\u1eddng \u0111\u1ed9 cao, \u0111i\u1ec1u n\u00e0y th\u01b0\u1eddng li\u00ean quan \u0111\u1ebfn m\u00f4i tr\u01b0\u1eddng x\u1eed l\u00fd nhi\u1ec7t, \u0111i\u1ec1u khi\u1ec3n l\u00f2, nhi\u1ec7t \u0111\u1ed9 v\u00e0 th\u1eddi gian x\u1eed l\u00fd.<\/p>\n\n\n\n<p>Carbon l\u00e0 m\u1ed9t trong nh\u1eefng nguy\u00ean t\u1ed1 quan tr\u1ecdng gi\u00fap th\u00e9p \u0111\u1ea1t \u0111\u01b0\u1ee3c \u0111\u1ed9 c\u1ee9ng v\u00e0 \u0111\u1ed9 b\u1ec1n c\u1ea7n thi\u1ebft sau khi t\u00f4i v\u00e0 t\u00f4i. N\u1ebfu carbon b\u1ecb gi\u1ea3m g\u1ea7n b\u1ec1 m\u1eb7t, l\u1edbp b\u00ean ngo\u00e0i c\u00f3 th\u1ec3 tr\u1edf n\u00ean m\u1ec1m h\u01a1n d\u1ef1 \u0111\u1ecbnh. \u0110\u1ed1i v\u1edbi bu l\u00f4ng, \u0111i\u1ec1u n\u00e0y \u0111\u1eb7c bi\u1ec7t nh\u1ea1y c\u1ea3m xung quanh ren v\u00ec g\u1ed1c ren v\u1ed1n l\u00e0 v\u00f9ng t\u1eadp trung \u1ee9ng su\u1ea5t.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>k\u1ef3 h\u1ea1n<\/th><th>\u00dd ngh\u0129a<\/th><th>T\u1ea1i sao ng\u01b0\u1eddi mua n\u00ean quan t\u00e2m<\/th><\/tr><\/thead><tbody><tr><td>Decarburization<\/td><td>S\u1ef1 m\u1ea5t cacbon tr\u00ean b\u1ec1 m\u1eb7t th\u00e9p<\/td><td>C\u00f3 th\u1ec3 l\u00e0m gi\u1ea3m \u0111\u1ed9 c\u1ee9ng b\u1ec1 m\u1eb7t<\/td><\/tr><tr><td>Qu\u00e1 tr\u00ecnh kh\u1eed cacbon ho\u00e0n to\u00e0n<\/td><td>M\u1ea5t carbon nghi\u00eam tr\u1ecdng v\u1edbi l\u1edbp ferit<\/td><td>R\u1ee7i ro cao h\u01a1n \u1edf c\u00e1c b\u1ed9 ph\u1eadn c\u00f3 \u0111\u1ed9 b\u1ec1n cao<\/td><\/tr><tr><td>Kh\u1eed cacbon m\u1ed9t ph\u1ea7n<\/td><td>Gi\u1ea3m carbon nh\u01b0ng kh\u00f4ng ho\u00e0n to\u00e0n ferritic<\/td><td>V\u1eabn c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn hi\u1ec7u su\u1ea5t c\u1ee7a lu\u1ed3ng<\/td><\/tr><tr><td>Carburization<\/td><td>Carbon d\u01b0 th\u1eeba tr\u00ean b\u1ec1 m\u1eb7t<\/td><td>C\u00f3 th\u1ec3 l\u00e0m cho b\u1ec1 m\u1eb7t qu\u00e1 c\u1ee9ng ho\u1eb7c gi\u00f2n<\/td><\/tr><tr><td>Ch\u1ee7 \u0111\u1ec1 g\u1ed1c<\/td><td>\u0110i\u1ec3m th\u1ea5p nh\u1ea5t c\u1ee7a bi\u00ean d\u1ea1ng ren<\/td><td>V\u00f9ng t\u1eadp trung \u1ee9ng su\u1ea5t t\u1edbi h\u1ea1n<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>\u0110\u1ed1i v\u1edbi ph\u1ea7n c\u1ee9ng th\u00f4ng th\u01b0\u1eddng c\u00f3 r\u1ee7i ro th\u1ea5p, \u0111\u00e2y c\u00f3 th\u1ec3 kh\u00f4ng ph\u1ea3i l\u00e0 m\u1ed1i quan t\u00e2m l\u1edbn khi mua h\u00e0ng. \u0110\u1ed1i v\u1edbi bu l\u00f4ng c\u00f3 \u0111\u1ed9 b\u1ec1n cao th\u00ec kh\u00f4ng n\u00ean b\u1ecf qua.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">T\u1ea1i sao qu\u00e1 tr\u00ecnh kh\u1eed cacbon l\u1ea1i quan tr\u1ecdng \u1edf bu l\u00f4ng c\u01b0\u1eddng \u0111\u1ed9 cao<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">S\u1ee3i ch\u1ec9 ch\u1ecbu \u1ee9ng su\u1ea5t, kh\u00f4ng ch\u1ec9 h\u00ecnh d\u1ea1ng<\/h3>\n\n\n\n<p>Khi m\u1ed9t bu l\u00f4ng \u0111\u01b0\u1ee3c si\u1ebft ch\u1eb7t, t\u1ea3i tr\u1ecdng kh\u00f4ng \u0111\u01b0\u1ee3c chia \u0111\u1ec1u tr\u00ean m\u1ed7i s\u1ee3i. C\u00e1c lu\u1ed3ng tham gia \u0111\u1ea7u ti\u00ean mang m\u1ed9t ph\u1ea7n l\u1edbn t\u1ea3i. G\u1ed1c lu\u1ed3ng c\u0169ng ch\u1ecbu \u1ee9ng su\u1ea5t c\u1ee5c b\u1ed9 cao.<\/p>\n\n\n\n<p>N\u1ebfu l\u1edbp b\u1ec1 m\u1eb7t qu\u00e1 m\u1ec1m do qu\u00e1 tr\u00ecnh kh\u1eed cacbon, bu l\u00f4ng c\u00f3 th\u1ec3 m\u1ea5t kh\u1ea3 n\u0103ng ch\u1ed1ng m\u1ecfi, \u0111\u1ed9 b\u1ec1n ren v\u00e0 t\u00ednh nh\u1ea5t qu\u00e1n v\u1ec1 hi\u1ec7u su\u1ea5t. N\u1ebfu b\u1ec1 m\u1eb7t qu\u00e1 c\u1ee9ng do ki\u1ec3m so\u00e1t quy tr\u00ecnh kh\u00f4ng \u0111\u00fang c\u00e1ch, \u0111\u1ed9 gi\u00f2n c\u00f3 th\u1ec3 tr\u1edf th\u00e0nh m\u1ed9t r\u1ee7i ro kh\u00e1c.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>S\u1ef1 c\u1ed1 c\u00f3 th\u1ec3 x\u1ea3y ra<\/th><th>K\u1ebft qu\u1ea3 th\u1ef1c t\u1ebf<\/th><\/tr><\/thead><tbody><tr><td>B\u1ec1 m\u1eb7t ren \u0111\u01b0\u1ee3c kh\u1eed cacbon m\u1ec1m<\/td><td>Kh\u1ea3 n\u0103ng ch\u1ed1ng m\u1ecfi th\u1ea5p h\u01a1n<\/td><\/tr><tr><td>X\u1eed l\u00fd nhi\u1ec7t kh\u00f4ng \u0111\u1ed3ng \u0111\u1ec1u<\/td><td>Hi\u1ec7u su\u1ea5t h\u00e0ng lo\u1ea1t kh\u00f4ng nh\u1ea5t qu\u00e1n<\/td><\/tr><tr><td>B\u1ec1 m\u1eb7t qu\u00e1 c\u1ee9ng<\/td><td>Nguy c\u01a1 n\u1ee9t cao h\u01a1n<\/td><\/tr><tr><td>Ki\u1ec3m so\u00e1t l\u00f2 k\u00e9m<\/td><td>Nhi\u1ec1u bi\u1ebfn th\u1ec3 h\u01a1n gi\u1eefa c\u00e1c l\u00f4<\/td><\/tr><tr><td>Kh\u00f4ng c\u00f3 h\u1ed3 s\u01a1 ki\u1ec3m tra<\/td><td>Kh\u00f3 ch\u1ee9ng minh s\u1ef1 tu\u00e2n th\u1ee7<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>\u0110\u00e2y l\u00e0 l\u00fd do t\u1ea1i sao m\u1ed9t nh\u00e0 cung c\u1ea5p nghi\u00eam t\u00fac kh\u00f4ng coi x\u1eed l\u00fd nhi\u1ec7t l\u00e0 h\u1ed9p \u0111en. Qu\u00e1 tr\u00ecnh n\u00e0y ph\u1ea3i \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t v\u00e0 x\u00e1c minh.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Nh\u1eefng bu l\u00f4ng n\u00e0o c\u1ea7n th\u1eed nghi\u1ec7m kh\u1eed cacbon?<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">T\u1eadp trung v\u00e0o c\u1ea5p \u0111\u1ed9 s\u1ee9c m\u1ea1nh v\u00e0 r\u1ee7i ro \u1ee9ng d\u1ee5ng<\/h3>\n\n\n\n<p>Kh\u00f4ng ph\u1ea3i m\u1ecdi \u0111\u01a1n \u0111\u1eb7t h\u00e0ng chi ti\u1ebft si\u1ebft ch\u1eb7t \u0111\u1ec1u c\u1ea7n b\u00e1o c\u00e1o qu\u00e1 tr\u00ecnh gi\u1ea3i m\u00e3 cacbon. Nhu c\u1ea7u ph\u1ee5 thu\u1ed9c v\u00e0o c\u1ea5p \u0111\u1ed9, ti\u00eau chu\u1ea9n, \u0111i\u1ec1u ki\u1ec7n d\u1ecbch v\u1ee5 v\u00e0 th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt c\u1ee7a ng\u01b0\u1eddi mua.<\/p>\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>\u01afu ti\u00ean ki\u1ec3m tra<\/th><\/tr><\/thead><tbody><tr><td>Bu l\u00f4ng th\u00f4ng th\u01b0\u1eddng b\u1eb1ng th\u00e9p carbon th\u1ea5p<\/td><td>Th\u01b0\u1eddng c\u00f3 m\u1ee9c \u0111\u1ed9 \u01b0u ti\u00ean th\u1ea5p<\/td><\/tr><tr><td>L\u1edbp 8.8 bu l\u00f4ng<\/td><td>Ki\u1ec3m tra n\u1ebfu \u0111\u01b0\u1ee3c y\u00eau c\u1ea7u theo ti\u00eau chu\u1ea9n ho\u1eb7c d\u1ef1 \u00e1n<\/td><\/tr><tr><td>L\u1edbp 10.9 bu l\u00f4ng<\/td><td>Th\u01b0\u1eddng quan tr\u1ecdng \u0111\u1ed1i v\u1edbi vi\u1ec7c cung c\u1ea5p \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t<\/td><\/tr><tr><td>L\u1edbp 12.9 bu l\u00f4ng<\/td><td>M\u1ee9c \u0111\u1ed9 \u01b0u ti\u00ean cao<\/td><\/tr><tr><td>Bu l\u00f4ng k\u1ebft c\u1ea5u<\/td><td>Th\u1ef1c hi\u1ec7n theo c\u00e1c y\u00eau c\u1ea7u c\u1ee7a d\u1ef1 \u00e1n v\u00e0 ti\u00eau chu\u1ea9n<\/td><\/tr><tr><td>Bu l\u00f4ng \u00f4 t\u00f4 ho\u1eb7c m\u00e1y m\u00f3c<\/td><td>Th\u01b0\u1eddng \u0111\u01b0\u1ee3c y\u00eau c\u1ea7u b\u1edfi c\u00e1c th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt<\/td><\/tr><tr><td>Bu l\u00f4ng c\u01b0\u1eddng \u0111\u1ed9 cao t\u00f9y ch\u1ec9nh<\/td><td>R\u1ea5t khuy\u1ebfn kh\u00edch<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>N\u1ebfu bu l\u00f4ng li\u00ean quan \u0111\u1ebfn an to\u00e0n, ch\u1ecbu m\u1ecfi, ch\u1ecbu va \u0111\u1eadp ho\u1eb7c \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong m\u1ed9t t\u1ed5 h\u1ee3p quan tr\u1ecdng, ng\u01b0\u1eddi mua n\u00ean x\u00e1c nh\u1eadn xem c\u00f3 c\u1ea7n ph\u1ea3i th\u1eed nghi\u1ec7m kh\u1eed cacbon tr\u01b0\u1edbc khi \u0111\u1eb7t h\u00e0ng hay kh\u00f4ng.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">C\u00e1ch ki\u1ec3m tra qu\u00e1 tr\u00ecnh kh\u1eed cacbon<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Th\u1eed nghi\u1ec7m th\u01b0\u1eddng l\u00e0 luy\u1ec7n kim<\/h3>\n\n\n\n<p>Ki\u1ec3m tra kh\u1eed cacbon kh\u00f4ng ph\u1ea3i l\u00e0 ki\u1ec3m tra tr\u1ef1c quan \u0111\u01a1n gi\u1ea3n. C\u00e1ch ti\u1ebfp c\u1eadn ph\u1ed5 bi\u1ebfn l\u00e0 c\u1eaft, g\u1eafn, \u0111\u00e1nh b\u00f3ng, kh\u1eafc v\u00e0 ki\u1ec3m tra m\u1eabu d\u01b0\u1edbi \u0111\u1ed9 ph\u00f3ng \u0111\u1ea1i. Ng\u01b0\u1eddi ki\u1ec3m tra nh\u00ecn v\u00e0o l\u1edbp b\u1ec1 m\u1eb7t, \u0111\u1eb7c bi\u1ec7t l\u00e0 v\u00f9ng ren, \u0111\u1ec3 \u0111\u00e1nh gi\u00e1 l\u01b0\u1ee3ng carbon th\u1ea5t tho\u00e1t ho\u1eb7c c\u1ea5u tr\u00fac b\u1ea5t th\u01b0\u1eddng.<\/p>\n\n\n\n<p>Ki\u1ec3m tra bi\u00ean d\u1ea1ng \u0111\u1ed9 c\u1ee9ng c\u0169ng c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng t\u00f9y thu\u1ed9c v\u00e0o th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Ph\u01b0\u01a1ng ph\u00e1p ki\u1ec3m tra<\/th><th>N\u00f3 ki\u1ec3m tra nh\u1eefng g\u00ec<\/th><th>L\u01b0u \u00fd c\u1ee7a ng\u01b0\u1eddi mua<\/th><\/tr><\/thead><tbody><tr><td>Ki\u1ec3m tra kim lo\u1ea1i<\/td><td>C\u1ea5u tr\u00fac vi m\u00f4 b\u1ec1 m\u1eb7t v\u00e0 \u0111\u1ed9 s\u00e2u gi\u1ea3i cacbon<\/td><td>Ph\u1ed5 bi\u1ebfn \u0111\u1ec3 \u0111\u00e1nh gi\u00e1 ch\u1ee7 \u0111\u1ec1<\/td><\/tr><tr><td>H\u1ed3 s\u01a1 \u0111\u1ed9 c\u1ee9ng vi m\u00f4<\/td><td>\u0110\u1ed9 c\u1ee9ng thay \u0111\u1ed5i t\u1eeb b\u1ec1 m\u1eb7t v\u00e0o trong<\/td><td>H\u1eefu \u00edch cho vi\u1ec7c x\u00e1c nh\u1eadn qu\u00e1 tr\u00ecnh<\/td><\/tr><tr><td>Ki\u1ec3m tra \u0111\u1ed9 c\u1ee9ng l\u00f5i<\/td><td>\u0110i\u1ec1u ki\u1ec7n x\u1eed l\u00fd nhi\u1ec7t t\u1ed5ng th\u1ec3<\/td><td>Kh\u00f4ng thay th\u1ebf vi\u1ec7c xem x\u00e9t b\u1ec1 m\u1eb7t<\/td><\/tr><tr><td>Ki\u1ec3m tra \u0111\u1ed9 b\u1ec1n k\u00e9o<\/td><td>Hi\u1ec7u su\u1ea5t s\u1ee9c m\u1ea1nh chung<\/td><td>C\u00f3 th\u1ec3 kh\u00f4ng ph\u00e1t hi\u1ec7n qu\u00e1 tr\u00ecnh kh\u1eed cacbon c\u1ee5c b\u1ed9<\/td><\/tr><tr><td>Ki\u1ec3m tra n\u00eam<\/td><td>H\u00e0nh vi s\u1ee9c m\u1ea1nh \u0111\u1ea7u v\u00e0 th\u00e2n<\/td><td>Kh\u00f4ng ph\u1ea3i l\u00e0 th\u1eed nghi\u1ec7m kh\u1eed cacbon tr\u1ef1c ti\u1ebfp<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>M\u1ed9t bu l\u00f4ng c\u00f3 th\u1ec3 v\u01b0\u1ee3t qua b\u00e0i ki\u1ec3m tra \u0111\u1ed9 b\u1ec1n k\u00e9o nh\u01b0ng v\u1eabn cho th\u1ea5y hi\u1ec7n t\u01b0\u1ee3ng kh\u1eed cacbon tr\u00ean b\u1ec1 m\u1eb7t. \u0110\u00f3 l\u00e0 l\u00fd do t\u1ea1i sao ng\u01b0\u1eddi mua kh\u00f4ng n\u00ean cho r\u1eb1ng m\u1ed9t th\u1eed nghi\u1ec7m s\u1ebd gi\u1ea3i quy\u1ebft \u0111\u01b0\u1ee3c m\u1ecdi r\u1ee7i ro.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Ti\u00eau chu\u1ea9n v\u00e0 t\u00e0i li\u1ec7u<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u0110\u1eb7t y\u00eau c\u1ea7u v\u00e0o RFQ<\/h3>\n\n\n\n<p>C\u00e1c ch\u1ed1t c\u01b0\u1eddng \u0111\u1ed9 cao c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t theo ISO, ASTM, SAE, DIN, ho\u1eb7c c\u00e1c ti\u00eau chu\u1ea9n d\u00e0nh ri\u00eang cho d\u1ef1 \u00e1n. M\u1ed9t s\u1ed1 ti\u00eau chu\u1ea9n bao g\u1ed3m c\u00e1c gi\u1edbi h\u1ea1n kh\u1eed cacbon ho\u1eb7c tham kh\u1ea3o c\u00e1c ph\u01b0\u01a1ng ph\u00e1p th\u1eed nghi\u1ec7m. OEM b\u1ea3n v\u1ebd c\u0169ng c\u00f3 th\u1ec3 x\u00e1c \u0111\u1ecbnh ti\u00eau ch\u00ed ch\u1ea5p nh\u1eadn c\u1ee5 th\u1ec3.<\/p>\n\n\n\n<p>\u0110i\u1ec3m m\u1ea5u ch\u1ed1t r\u1ea5t \u0111\u01a1n gi\u1ea3n: kh\u00f4ng y\u00eau c\u1ea7u th\u1eed nghi\u1ec7m kh\u1eed cacbon sau khi s\u1ea3n xu\u1ea5t n\u1ebfu n\u00f3 kh\u00f4ng c\u00f3 trong \u0111\u01a1n \u0111\u1eb7t h\u00e0ng. Nh\u00e0 cung c\u1ea5p ph\u1ea3i bi\u1ebft y\u00eau c\u1ea7u tr\u01b0\u1edbc khi l\u1eadp k\u1ebf ho\u1ea1ch ki\u1ec3m tra v\u00e0 x\u1eed l\u00fd nhi\u1ec7t.<\/p>\n\n\n\n<p>M\u1ed9t RFQ th\u00edch h\u1ee3p n\u00ean n\u00eau r\u00f5:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Ti\u00eau chu\u1ea9n v\u00e0 c\u1ea5p \u0111\u1ed9 bu l\u00f4ng.<\/li>\n\n\n\n<li>Y\u00eau c\u1ea7u x\u1eed l\u00fd nhi\u1ec7t.<\/li>\n\n\n\n<li>Ph\u01b0\u01a1ng ph\u00e1p th\u1eed kh\u1eed cacbon ho\u1eb7c ti\u00eau chu\u1ea9n qu\u1ea3n l\u00fd.<\/li>\n\n\n\n<li>Gi\u1edbi h\u1ea1n ch\u1ea5p nh\u1eadn<\/li>\n\n\n\n<li>S\u1ed1 l\u01b0\u1ee3ng m\u1eabu ho\u1eb7c t\u1ea7n su\u1ea5t ki\u1ec3m tra.<\/li>\n\n\n\n<li>\u0110\u1ecbnh d\u1ea1ng b\u00e1o c\u00e1o b\u1eaft bu\u1ed9c.<\/li>\n\n\n\n<li>Truy xu\u1ea5t ngu\u1ed3n g\u1ed1c l\u00f4 h\u00e0ng v\u00e0 ki\u1ec3m so\u00e1t s\u1ed1 nhi\u1ec7t.<\/li>\n\n\n\n<li>Li\u1ec7u c\u00f3 c\u1ea7n th\u1eed nghi\u1ec7m c\u1ee7a b\u00ean th\u1ee9 ba hay kh\u00f4ng.<\/li>\n<\/ol>\n\n\n\n<p>\u0110\u1ed1i v\u1edbi c\u00e1c b\u1ed9 ph\u1eadn d\u1ef1a tr\u00ean b\u1ea3n v\u1ebd ho\u1eb7c c\u1ea5p \u0111\u1eb7c bi\u1ec7t, ng\u01b0\u1eddi mua c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng XZ Fastener's <a href=\"https:\/\/xzfastener.com\/vi\/fastener-drawings-samples-and-rfq-requirements-buyers-checklist\/\">B\u1ea3n v\u1ebd chi ti\u1ebft si\u1ebft ch\u1eb7t, m\u1eabu v\u00e0 c\u00e1c y\u00eau c\u1ea7u (RFQ)<\/a> nh\u01b0 m\u1ed9t t\u00e0i li\u1ec7u tham kh\u1ea3o danh s\u00e1ch ki\u1ec3m tra.<\/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<h3 class=\"wp-block-heading\">Gi\u1ea3 s\u1eed \u201cc\u01b0\u1eddng \u0111\u1ed9 cao\u201d c\u00f3 ngh\u0129a l\u00e0 \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t ho\u00e0n to\u00e0n<\/h3>\n\n\n\n<p>D\u1ea5u 10.9 ho\u1eb7c 12.9 cho b\u1ea1n bi\u1ebft lo\u1ea1i thu\u1ed9c t\u00ednh d\u1ef1 ki\u1ebfn. B\u1ea3n th\u00e2n n\u00f3 kh\u00f4ng ch\u1ee9ng minh r\u1eb1ng m\u1ecdi r\u1ee7i ro luy\u1ec7n kim \u0111\u1ec1u \u0111\u00e3 \u0111\u01b0\u1ee3c xem x\u00e9t cho \u0111\u01a1n \u0111\u0103ng k\u00fd c\u1ee7a b\u1ea1n.<\/p>\n\n\n\n<p>Nh\u1eefng l\u1ed7i ph\u1ed5 bi\u1ebfn bao g\u1ed3m:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Ch\u1ec9 y\u00eau c\u1ea7u \u0111\u1ed9 c\u1ee9ng v\u00e0 \u0111\u1ed9 b\u1ec1n k\u00e9o.<\/li>\n\n\n\n<li>B\u1ecf qua t\u00ecnh tr\u1ea1ng b\u1ec1 m\u1eb7t ren.<\/li>\n\n\n\n<li>Thay \u0111\u1ed5i nh\u00e0 cung c\u1ea5p x\u1eed l\u00fd nhi\u1ec7t m\u00e0 kh\u00f4ng \u0111\u01b0\u1ee3c ph\u00ea duy\u1ec7t.<\/li>\n\n\n\n<li>Kh\u00f4ng t\u00e1ch l\u00f4 s\u1ea3n xu\u1ea5t.<\/li>\n\n\n\n<li>Ch\u1ea5p nh\u1eadn c\u00e1c ch\u1ee9ng ch\u1ec9 kh\u00f4ng r\u00f5 r\u00e0ng.<\/li>\n\n\n\n<li>Th\u00eam y\u00eau c\u1ea7u ki\u1ec3m tra sau khi h\u00e0ng h\u00f3a ho\u00e0n th\u00e0nh.<\/li>\n\n\n\n<li>S\u1eed d\u1ee5ng bu l\u00f4ng c\u01b0\u1eddng \u0111\u1ed9 cao \u0111\u01b0\u1ee3c m\u1ea1 \u0111i\u1ec7n m\u00e0 kh\u00f4ng xem x\u00e9t nguy c\u01a1 gi\u00f2n.<\/li>\n<\/ul>\n\n\n\n<p>\u0110\u1ed1i v\u1edbi c\u00e1c bu l\u00f4ng c\u00f3 \u0111\u1ed9 b\u1ec1n cao \u0111\u01b0\u1ee3c ph\u1ee7 l\u1edbp ph\u1ee7, b\u1ec1 m\u1eb7t ho\u00e0n thi\u1ec7n c\u1ea7n \u0111\u01b0\u1ee3c xem x\u00e9t c\u00f9ng v\u1edbi r\u1ee7i ro c\u01a1 h\u1ecdc. Xem XZ Fastener <a href=\"https:\/\/xzfastener.com\/vi\/products-category\/various-coated-fasteners\/\">\u1ed1c v\u00edt tr\u00e1ng kh\u00e1c nhau<\/a> cho c\u00e1c h\u1ea1ng m\u1ee5c l\u1edbp ph\u1ee7.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Ki\u1ec3m so\u00e1t v\u1eadt li\u1ec7u, l\u1edbp ph\u1ee7 v\u00e0 quy tr\u00ecnh<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">To\u00e0n b\u1ed9 qu\u00e1 tr\u00ecnh \u0111\u1ec1u quan tr\u1ecdng<\/h3>\n\n\n\n<p>R\u1ee7i ro kh\u1eed cacbon c\u00f3 li\u00ean quan \u0111\u1ebfn v\u1eadt li\u1ec7u v\u00e0 x\u1eed l\u00fd nhi\u1ec7t, nh\u01b0ng hi\u1ec7u su\u1ea5t cu\u1ed1i c\u00f9ng c\u1ee7a bu l\u00f4ng c\u0169ng ph\u1ee5 thu\u1ed9c v\u00e0o vi\u1ec7c c\u00e1n ren, ph\u1ee7, nung, l\u00e0m s\u1ea1ch v\u00e0 x\u1eed l\u00fd.<\/p>\n\n\n\n<p>Bu l\u00f4ng th\u00e9p cacbon v\u00e0 th\u00e9p h\u1ee3p kim c\u01b0\u1eddng \u0111\u1ed9 cao y\u00eau c\u1ea7u s\u1ea3n xu\u1ea5t \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t. \u0110\u1ed1i v\u1edbi c\u00e1c l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u, XZ Fastener <a href=\"https:\/\/xzfastener.com\/vi\/fastener-material\/carbon-steel\/\">\u1ed1c v\u00edt th\u00e9p carbon<\/a> trang cung c\u1ea5p m\u1ed9t t\u00e0i li\u1ec7u tham kh\u1ea3o h\u1eefu \u00edch.<\/p>\n\n\n\n<p>C\u00e1c bi\u1ec7n ph\u00e1p ki\u1ec3m so\u00e1t quan tr\u1ecdng bao g\u1ed3m:<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>B\u01b0\u1edbc x\u1eed l\u00fd<\/th><th>R\u1ee7i ro c\u1ea7n theo d\u00f5i<\/th><\/tr><\/thead><tbody><tr><td>L\u1ef1a ch\u1ecdn thanh d\u00e2y<\/td><td>H\u00f3a h\u1ecdc sai ho\u1eb7c nhi\u1ec7t kh\u00f4ng ph\u00f9 h\u1ee3p<\/td><\/tr><tr><td>\u0110\u00e1nh \u0111\u1ea7u v\u00e0 l\u0103n<\/td><td>V\u1ebft n\u1ee9t ho\u1eb7c h\u01b0 h\u1ecfng b\u1ec1 m\u1eb7t<\/td><\/tr><tr><td>X\u1eed l\u00fd nhi\u1ec7t<\/td><td>Kh\u1eed cacbon ho\u1eb7c \u0111\u1ed9 c\u1ee9ng qu\u00e1 m\u1ee9c<\/td><\/tr><tr><td>L\u1edbp ph\u1ee7<\/td><td>Nguy c\u01a1 gi\u00f2n hydro trong m\u1ed9t s\u1ed1 quy tr\u00ecnh<\/td><\/tr><tr><td>S\u1eafp x\u1ebfp<\/td><td>L\u00f4 h\u1ed7n h\u1ee3p ho\u1eb7c \u0111\u00e1nh d\u1ea5u sai<\/td><\/tr><tr><td>\u0111\u00f3ng g\u00f3i<\/td><td>H\u01b0 h\u1ecfng ch\u1ec9 trong qu\u00e1 tr\u00ecnh v\u1eadn chuy\u1ec3n<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>K\u1ebft qu\u1ea3 ki\u1ec3m tra t\u1ed1t nh\u1ea5t \u0111\u1ebfn t\u1eeb vi\u1ec7c ki\u1ec3m so\u00e1t qu\u00e1 tr\u00ecnh ch\u1ee9 kh\u00f4ng ph\u1ea3i t\u1eeb vi\u1ec7c c\u1ed1 g\u1eafng n\u1eafm b\u1eaft m\u1ecdi v\u1ea5n \u0111\u1ec1 \u0111\u1ebfn cu\u1ed1i c\u00f9ng.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">L\u1eddi khuy\u00ean cu\u1ed1i c\u00f9ng d\u00e0nh cho ng\u01b0\u1eddi mua<\/h2>\n\n\n\n<p>Th\u1eed nghi\u1ec7m kh\u1eed cacbon \u1edf bu l\u00f4ng c\u01b0\u1eddng \u0111\u1ed9 cao kh\u00f4ng ch\u1ec9 l\u00e0 m\u1ed9t c\u00f4ng vi\u1ec7c chi ti\u1ebft trong ph\u00f2ng th\u00ed nghi\u1ec7m. N\u00f3 l\u00e0 m\u1ed9t ph\u1ea7n c\u1ee7a ki\u1ec3m so\u00e1t r\u1ee7i ro \u0111\u1ed1i v\u1edbi c\u00e1c bu l\u00f4ng ho\u1ea1t \u0111\u1ed9ng d\u01b0\u1edbi c\u00e1c y\u00eau c\u1ea7u v\u1ec1 t\u1ea3i tr\u1ecdng, \u0111\u1ed9 rung, \u0111\u1ed9 m\u1ecfi v\u00e0 an to\u00e0n th\u1ef1c t\u1ebf.<\/p>\n\n\n\n<p>\u0110\u1ed1i v\u1edbi c\u00e1c \u1ed1c v\u00edt th\u00f4ng th\u01b0\u1eddng, vi\u1ec7c ki\u1ec3m tra k\u00edch th\u01b0\u1edbc v\u00e0 c\u01a1 h\u1ecdc theo ti\u00eau chu\u1ea9n c\u00f3 th\u1ec3 l\u00e0 \u0111\u1ee7. \u0110\u1ed1i v\u1edbi Lo\u1ea1i 10.9, Lo\u1ea1i 12.9, bu l\u00f4ng k\u1ebft c\u1ea5u, bu l\u00f4ng m\u00e1y m\u00f3c, \u1ed1c v\u00edt \u00f4 t\u00f4 ho\u1eb7c c\u00e1c b\u1ed9 ph\u1eadn c\u00f3 \u0111\u1ed9 b\u1ec1n cao t\u00f9y ch\u1ec9nh, ng\u01b0\u1eddi mua n\u00ean s\u1edbm xem x\u00e9t c\u00e1c y\u00eau c\u1ea7u v\u1ec1 kh\u1eed cacbon.<\/p>\n\n\n\n<p>C\u00e1ch ti\u1ebfp c\u1eadn an to\u00e0n nh\u1ea5t l\u00e0 x\u00e1c \u0111\u1ecbnh c\u00e1c y\u00eau c\u1ea7u v\u1ec1 c\u1ea5p \u0111\u1ed9, ti\u00eau chu\u1ea9n, x\u1eed l\u00fd nhi\u1ec7t, ki\u1ec3m tra kh\u1eed cacbon, gi\u1ea5y ch\u1ee9ng nh\u1eadn v\u00e0 truy xu\u1ea5t ngu\u1ed3n g\u1ed1c trong RFQ. N\u1ebfu \u1ee9ng d\u1ee5ng quan tr\u1ecdng, h\u00e3y g\u1eedi b\u1ea3n v\u1ebd, ti\u00eau chu\u1ea9n v\u00e0 \u0111i\u1ec1u ki\u1ec7n l\u00e0m vi\u1ec7c qua <a href=\"https:\/\/xzfastener.com\/vi\/home\/contact-us\/\">XZ Fastener Li\u00ean h\u1ec7 v\u1edbi ch\u00fang t\u00f4i<\/a>. Y\u00eau c\u1ea7u r\u00f5 r\u00e0ng ngay t\u1eeb \u0111\u1ea7u s\u1ebd r\u1ebb h\u01a1n nhi\u1ec1u so v\u1edbi vi\u1ec7c ph\u00e1t hi\u1ec7n ra v\u1ea5n \u0111\u1ec1 x\u1eed l\u00fd nhi\u1ec7t sau khi bu l\u00f4ng \u0111\u00e3 \u0111\u01b0\u1ee3c \u0111\u01b0a v\u00e0o s\u1eed d\u1ee5ng.<\/p>","protected":false},"excerpt":{"rendered":"<p>Decarburization testing in high-strength bolts is not a topic most buyers ask about in the first RFQ. They usually ask for size, grade, coating, price, and delivery time. That is understandable. But when bolts are used in heavy machinery, steel structures, pressure equipment, mining systems, wind power, or other high-load assemblies, the surface condition of [&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":[509],"class_list":["post-7120","post","type-post","status-publish","format-standard","hentry","category-fastener-knowledge-library","tag-quality-inspection-testing"],"acf":[],"_links":{"self":[{"href":"https:\/\/xzfastener.com\/vi\/wp-json\/wp\/v2\/posts\/7120","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=7120"}],"version-history":[{"count":1,"href":"https:\/\/xzfastener.com\/vi\/wp-json\/wp\/v2\/posts\/7120\/revisions"}],"predecessor-version":[{"id":7121,"href":"https:\/\/xzfastener.com\/vi\/wp-json\/wp\/v2\/posts\/7120\/revisions\/7121"}],"wp:attachment":[{"href":"https:\/\/xzfastener.com\/vi\/wp-json\/wp\/v2\/media?parent=7120"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/xzfastener.com\/vi\/wp-json\/wp\/v2\/categories?post=7120"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/xzfastener.com\/vi\/wp-json\/wp\/v2\/tags?post=7120"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}