{"id":5702,"date":"2025-12-24T01:32:43","date_gmt":"2025-12-24T01:32:43","guid":{"rendered":"https:\/\/korea-transmission.com\/?p=5702"},"modified":"2025-12-24T01:32:43","modified_gmt":"2025-12-24T01:32:43","slug":"gb-t-3098-5-2016-self-tapping-screws-mechanical-properties","status":"publish","type":"post","link":"https:\/\/korea-transmission.com\/vi\/blog\/gb-t-3098-5-2016-self-tapping-screws-mechanical-properties\/","title":{"rendered":"GB\/T 3098.5-2016: \u0110\u1eb7c t\u00ednh c\u01a1 h\u1ecdc c\u1ee7a v\u00edt t\u1ef1 ren"},"content":{"rendered":"<section>\n<h2 dir=\"auto\">Gi\u1edbi thi\u1ec7u v\u1ec1 Ti\u00eau chu\u1ea9n GB\/T 3098.5-2016<\/h2>\n<p dir=\"auto\">Ti\u00eau chu\u1ea9n GB\/T 3098.5-2016 quy \u0111\u1ecbnh c\u00e1c \u0111\u1eb7c t\u00ednh c\u01a1 h\u1ecdc c\u1ee7a v\u00edt t\u1ef1 ren, m\u1ed9t lo\u1ea1i \u1ed1c v\u00edt thi\u1ebft y\u1ebfu \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 t\u1ef1 t\u1ea1o ren trong c\u00e1c v\u1eadt li\u1ec7u nh\u01b0 kim lo\u1ea1i, nh\u1ef1a v\u00e0 g\u1ed7 m\u00e0 kh\u00f4ng c\u1ea7n khoan l\u1ed7 tr\u01b0\u1edbc. Ti\u00eau chu\u1ea9n n\u00e0y \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 tin c\u1eady trong c\u00e1c \u1ee9ng d\u1ee5ng t\u1eeb l\u1eafp r\u00e1p \u00f4 t\u00f4 \u0111\u1ebfn x\u00e2y d\u1ef1ng v\u00e0 s\u1ea3n xu\u1ea5t \u0111i\u1ec7n t\u1eed.<\/p>\n<p dir=\"auto\">L\u00e0 t\u00e0i li\u1ec7u tham kh\u1ea3o quan tr\u1ecdng cho c\u00e1c k\u1ef9 s\u01b0 v\u00e0 nh\u00e0 s\u1ea3n xu\u1ea5t, ti\u00eau chu\u1ea9n n\u00e0y n\u00eau r\u00f5 c\u00e1c y\u00eau c\u1ea7u v\u1ec1 \u0111\u1ed9 c\u1ee9ng b\u1ec1 m\u1eb7t, \u0111\u1ed9 s\u00e2u t\u00f4i c\u1ee9ng, \u0111\u1ed9 c\u1ee9ng l\u00f5i v\u00e0 hi\u1ec7u su\u1ea5t trong c\u00e1c th\u1eed nghi\u1ec7m ren. Tu\u00e2n th\u1ee7 c\u00e1c th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt n\u00e0y \u0111\u1ea3m b\u1ea3o r\u1eb1ng v\u00edt c\u00f3 th\u1ec3 ch\u1ecbu \u0111\u01b0\u1ee3c t\u1ea3i tr\u1ecdng quy \u0111\u1ecbnh m\u00e0 kh\u00f4ng b\u1ecb h\u1ecfng, g\u00f3p ph\u1ea7n \u0111\u1ea3m b\u1ea3o an to\u00e0n v\u00e0 \u0111\u1ed9 b\u1ec1n cho s\u1ea3n ph\u1ea9m cu\u1ed1i c\u00f9ng.<\/p>\n<ul dir=\"auto\">\n<li>X\u00e1c \u0111\u1ecbnh c\u00e1c gi\u00e1 tr\u1ecb t\u1ed1i thi\u1ec3u v\u00e0 t\u1ed1i \u0111a cho c\u00e1c thu\u1ed9c t\u00ednh c\u01a1 h\u1ecdc ch\u00ednh \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o ch\u1ea5t l\u01b0\u1ee3ng \u1ed5n \u0111\u1ecbnh.<\/li>\n<li>\u00c1p d\u1ee5ng cho c\u00e1c lo\u1ea1i v\u00edt t\u1ef1 ren b\u1eb1ng th\u00e9p carbon v\u1edbi nhi\u1ec1u k\u00edch c\u1ee1 ren kh\u00e1c nhau t\u1eeb ST2.2 \u0111\u1ebfn ST9.5.<\/li>\n<li>T\u00edch h\u1ee3p c\u00e1c quy tr\u00ecnh ki\u1ec3m tra v\u1ec1 hi\u1ec7u su\u1ea5t g\u00f5 v\u00e0 \u0111\u1ed9 b\u1ec1n xo\u1eafn.<\/li>\n<\/ul>\n<p dir=\"auto\">Ti\u00eau chu\u1ea9n n\u00e0y l\u00e0 m\u1ed9t ph\u1ea7n c\u1ee7a b\u1ed9 ti\u00eau chu\u1ea9n GB\/T 3098 r\u1ed9ng h\u01a1n v\u1ec1 c\u00e1c \u0111\u1eb7c t\u00ednh c\u01a1 h\u1ecdc c\u1ee7a v\u1eadt li\u1ec7u l\u1eafp gh\u00e9p, ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c ti\u00eau chu\u1ea9n qu\u1ed1c t\u1ebf nh\u01b0 ISO 2702 \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch to\u00e0n c\u1ea7u.<\/p>\n<\/section>\n<section>\n<h2 dir=\"auto\">Y\u00eau c\u1ea7u v\u1ec1 t\u00ednh ch\u1ea5t c\u01a1 h\u1ecdc<\/h2>\n<p dir=\"auto\">Ti\u00eau chu\u1ea9n n\u00e0y m\u00f4 t\u1ea3 chi ti\u1ebft c\u00e1c \u0111\u1eb7c t\u00ednh c\u01a1 h\u1ecdc ch\u00ednh x\u00e1c c\u1ee7a v\u00edt t\u1ef1 ren v\u1edbi c\u00e1c lo\u1ea1i ren kh\u00e1c nhau. Ch\u00fang bao g\u1ed3m \u0111\u1ed9 c\u1ee9ng b\u1ec1 m\u1eb7t \u0111o b\u1eb1ng \u0111\u01a1n v\u1ecb Vickers (HV), \u0111\u1ed9 s\u00e2u l\u1edbp th\u1ea5m cacbon, ph\u1ea1m vi \u0111\u1ed9 c\u1ee9ng l\u00f5i, \u0111\u1ed9 d\u00e0y t\u1ea5m th\u1eed nghi\u1ec7m ti\u00eau chu\u1ea9n v\u00e0 \u0111\u01b0\u1eddng k\u00ednh l\u1ed7 \u0111\u1ec3 ki\u1ec3m tra hi\u1ec7u su\u1ea5t ren, v\u00e0 gi\u00e1 tr\u1ecb m\u00f4-men xo\u1eafn ph\u00e1 v\u1ee1 t\u1ed1i thi\u1ec3u.<\/p>\n<p dir=\"auto\">\u0110\u1ed9 c\u1ee9ng b\u1ec1 m\u1eb7t \u0111\u1ea3m b\u1ea3o kh\u1ea3 n\u0103ng xuy\u00ean th\u1ea5u v\u00e0 t\u1ea1o ren hi\u1ec7u qu\u1ea3 c\u1ee7a v\u00edt. \u0110\u1ed9 s\u00e2u l\u1edbp t\u00f4i ki\u1ec3m so\u00e1t \u0111\u1ed9 d\u00e0y c\u1ee7a l\u1edbp t\u00f4i, c\u00e2n b\u1eb1ng gi\u1eefa \u0111\u1ed9 b\u1ec1n v\u00e0 kh\u1ea3 n\u0103ng ch\u1ed1ng m\u00e0i m\u00f2n. \u0110\u1ed9 c\u1ee9ng l\u00f5i cung c\u1ea5p \u0111\u1ed9 b\u1ec1n b\u00ean trong \u0111\u1ec3 ng\u0103n ng\u1eeba g\u00e3y gi\u00f2n. C\u00e1c th\u1eed nghi\u1ec7m t\u1ea1o ren m\u00f4 ph\u1ecfng vi\u1ec7c l\u1eafp \u0111\u1eb7t th\u1ef1c t\u1ebf, trong khi m\u00f4-men xo\u1eafn ph\u00e1 v\u1ee1 x\u00e1c minh t\u00ednh to\u00e0n v\u1eb9n xo\u1eafn.<\/p>\n<div>\n<div>\n<div>\n<div><\/div>\n<\/div>\n<div dir=\"auto\">\n<div><\/div>\n<table dir=\"auto\">\n<thead>\n<tr>\n<th data-col-size=\"xl\">Thu\u1ed9c t\u00ednh \/ Ch\u1ee7 \u0111\u1ec1<\/th>\n<th data-col-size=\"lg\">ST2.2<\/th>\n<th data-col-size=\"lg\">ST2.6<\/th>\n<th data-col-size=\"lg\">ST2.9<\/th>\n<th data-col-size=\"sm\">ST3.3<\/th>\n<th data-col-size=\"sm\">ST3.5<\/th>\n<th data-col-size=\"sm\">ST3.9<\/th>\n<th data-col-size=\"sm\">ST4.2<\/th>\n<th data-col-size=\"lg\">ST4.8<\/th>\n<th data-col-size=\"lg\">ST5.5<\/th>\n<th data-col-size=\"lg\">ST6.3<\/th>\n<th data-col-size=\"sm\">ST8<\/th>\n<th data-col-size=\"sm\">ST9.5<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td data-col-size=\"xl\">\u0110\u1ed9 c\u1ee9ng b\u1ec1 m\u1eb7t (t\u1ed1i thi\u1ec3u)<\/td>\n<td data-col-size=\"lg\">450 HV 0.3<\/td>\n<td data-col-size=\"lg\">450 HV 0.3<\/td>\n<td data-col-size=\"lg\">450 HV 0.3<\/td>\n<td data-col-size=\"sm\">450 HV 0.3<\/td>\n<td data-col-size=\"sm\">450 HV 0.3<\/td>\n<td data-col-size=\"sm\">450 HV 0.3<\/td>\n<td data-col-size=\"sm\">450 HV 0.3<\/td>\n<td data-col-size=\"lg\">450 HV 0.3<\/td>\n<td data-col-size=\"lg\">450 HV 0.3<\/td>\n<td data-col-size=\"lg\">450 HV 0.3<\/td>\n<td data-col-size=\"sm\">450 HV 0.3<\/td>\n<td data-col-size=\"sm\">450 HV 0.3<\/td>\n<\/tr>\n<tr>\n<td data-col-size=\"xl\">\u0110\u1ed9 s\u00e2u v\u1ecf (ph\u00fat)<\/td>\n<td data-col-size=\"lg\">0.04<\/td>\n<td data-col-size=\"lg\">0.04<\/td>\n<td data-col-size=\"lg\">0.05<\/td>\n<td data-col-size=\"sm\">0.05<\/td>\n<td data-col-size=\"sm\">0.05<\/td>\n<td data-col-size=\"sm\">0.1<\/td>\n<td data-col-size=\"sm\">0.1<\/td>\n<td data-col-size=\"lg\">0.1<\/td>\n<td data-col-size=\"lg\">0.1<\/td>\n<td data-col-size=\"lg\">0.15<\/td>\n<td data-col-size=\"sm\">0.15<\/td>\n<td data-col-size=\"sm\">0.15<\/td>\n<\/tr>\n<tr>\n<td data-col-size=\"xl\">\u0110\u1ed9 s\u00e2u v\u1ecf (t\u1ed1i \u0111a)<\/td>\n<td data-col-size=\"lg\">0.1<\/td>\n<td data-col-size=\"lg\">0.1<\/td>\n<td data-col-size=\"lg\">0.18<\/td>\n<td data-col-size=\"sm\">0.18<\/td>\n<td data-col-size=\"sm\">0.18<\/td>\n<td data-col-size=\"sm\">0.23<\/td>\n<td data-col-size=\"sm\">0.23<\/td>\n<td data-col-size=\"lg\">0.23<\/td>\n<td data-col-size=\"lg\">0.23<\/td>\n<td data-col-size=\"lg\">0.28<\/td>\n<td data-col-size=\"sm\">0.28<\/td>\n<td data-col-size=\"sm\">0.28<\/td>\n<\/tr>\n<tr>\n<td data-col-size=\"xl\">\u0110\u1ed9 c\u1ee9ng l\u00f5i (kho\u1ea3ng)<\/td>\n<td data-col-size=\"lg\">270 HV 5 \u0111\u1ebfn 370 HV 5<\/td>\n<td data-col-size=\"lg\">270 HV 5 \u0111\u1ebfn 370 HV 5<\/td>\n<td data-col-size=\"lg\">270 HV 5 \u0111\u1ebfn 370 HV 5<\/td>\n<td data-col-size=\"sm\">270 HV 5 \u0111\u1ebfn 370 HV 5<\/td>\n<td data-col-size=\"sm\">270 HV 5 \u0111\u1ebfn 370 HV 5<\/td>\n<td data-col-size=\"sm\">270 HV 5 \u0111\u1ebfn 370 HV 5<\/td>\n<td data-col-size=\"sm\">270 HV 10 \u0111\u1ebfn 370 HV 10<\/td>\n<td data-col-size=\"lg\">270 HV 10 \u0111\u1ebfn 370 HV 10<\/td>\n<td data-col-size=\"lg\">270 HV 10 \u0111\u1ebfn 370 HV 10<\/td>\n<td data-col-size=\"lg\">270 HV 10 \u0111\u1ebfn 370 HV 10<\/td>\n<td data-col-size=\"sm\">270 HV 10 \u0111\u1ebfn 370 HV 10<\/td>\n<td data-col-size=\"sm\">270 HV 10 \u0111\u1ebfn 370 HV 10<\/td>\n<\/tr>\n<tr>\n<td data-col-size=\"xl\">\u0110\u1ed9 d\u00e0y t\u1ea5m th\u1eed nghi\u1ec7m (t\u1ed1i thi\u1ec3u)<\/td>\n<td data-col-size=\"lg\">1.17<\/td>\n<td data-col-size=\"lg\">1.17<\/td>\n<td data-col-size=\"lg\">1.17<\/td>\n<td data-col-size=\"sm\">1.17<\/td>\n<td data-col-size=\"sm\">1.85<\/td>\n<td data-col-size=\"sm\">1.85<\/td>\n<td data-col-size=\"sm\">1.85<\/td>\n<td data-col-size=\"lg\">3.1<\/td>\n<td data-col-size=\"lg\">3.1<\/td>\n<td data-col-size=\"lg\">4.67<\/td>\n<td data-col-size=\"sm\">4.67<\/td>\n<td data-col-size=\"sm\">4.67<\/td>\n<\/tr>\n<tr>\n<td data-col-size=\"xl\">\u0110\u1ed9 d\u00e0y t\u1ea5m th\u1eed nghi\u1ec7m (t\u1ed1i \u0111a)<\/td>\n<td data-col-size=\"lg\">1.3<\/td>\n<td data-col-size=\"lg\">1.3<\/td>\n<td data-col-size=\"lg\">1.3<\/td>\n<td data-col-size=\"sm\">1.3<\/td>\n<td data-col-size=\"sm\">2.06<\/td>\n<td data-col-size=\"sm\">2.06<\/td>\n<td data-col-size=\"sm\">2.06<\/td>\n<td data-col-size=\"lg\">3.23<\/td>\n<td data-col-size=\"lg\">3.23<\/td>\n<td data-col-size=\"lg\">5.05<\/td>\n<td data-col-size=\"sm\">5.05<\/td>\n<td data-col-size=\"sm\">5.05<\/td>\n<\/tr>\n<tr>\n<td data-col-size=\"xl\">\u0110\u01b0\u1eddng k\u00ednh l\u1ed7 tr\u00ean t\u1ea5m th\u1eed nghi\u1ec7m (t\u1ed1i thi\u1ec3u)<\/td>\n<td data-col-size=\"lg\">1.905<\/td>\n<td data-col-size=\"lg\">2.185<\/td>\n<td data-col-size=\"lg\">2.415<\/td>\n<td data-col-size=\"sm\">2.68<\/td>\n<td data-col-size=\"sm\">2.92<\/td>\n<td data-col-size=\"sm\">3.24<\/td>\n<td data-col-size=\"sm\">3.43<\/td>\n<td data-col-size=\"lg\">4.015<\/td>\n<td data-col-size=\"lg\">4.735<\/td>\n<td data-col-size=\"lg\">5.475<\/td>\n<td data-col-size=\"sm\">6.885<\/td>\n<td data-col-size=\"sm\">8.27<\/td>\n<\/tr>\n<tr>\n<td data-col-size=\"xl\">\u0110\u01b0\u1eddng k\u00ednh l\u1ed7 tr\u00ean t\u1ea5m th\u1eed nghi\u1ec7m (t\u1ed1i \u0111a)<\/td>\n<td data-col-size=\"lg\">1.955<\/td>\n<td data-col-size=\"lg\">2.235<\/td>\n<td data-col-size=\"lg\">2.465<\/td>\n<td data-col-size=\"sm\">2.73<\/td>\n<td data-col-size=\"sm\">2.97<\/td>\n<td data-col-size=\"sm\">3.29<\/td>\n<td data-col-size=\"sm\">3.48<\/td>\n<td data-col-size=\"lg\">4.065<\/td>\n<td data-col-size=\"lg\">4.785<\/td>\n<td data-col-size=\"lg\">5.525<\/td>\n<td data-col-size=\"sm\">6.935<\/td>\n<td data-col-size=\"sm\">8.33<\/td>\n<\/tr>\n<tr>\n<td data-col-size=\"xl\">M\u00f4men xo\u1eafn ph\u00e1 v\u1ee1 (ph\u00fat, N\u00b7m)<\/td>\n<td data-col-size=\"lg\">0.45<\/td>\n<td data-col-size=\"lg\">0.9<\/td>\n<td data-col-size=\"lg\">1.5<\/td>\n<td data-col-size=\"sm\">2<\/td>\n<td data-col-size=\"sm\">2.7<\/td>\n<td data-col-size=\"sm\">3.4<\/td>\n<td data-col-size=\"sm\">4.4<\/td>\n<td data-col-size=\"lg\">6.3<\/td>\n<td data-col-size=\"lg\">10<\/td>\n<td data-col-size=\"lg\">13.6<\/td>\n<td data-col-size=\"sm\">30.5<\/td>\n<td data-col-size=\"sm\">68<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<div><\/div>\n<\/div>\n<\/div>\n<\/div>\n<p dir=\"auto\">L\u01b0u \u00fd: T\u1ea5t c\u1ea3 c\u00e1c k\u00edch th\u01b0\u1edbc \u0111\u1ec1u t\u00ednh b\u1eb1ng milim\u00e9t tr\u1eeb khi c\u00f3 quy \u0111\u1ecbnh kh\u00e1c. Gi\u00e1 tr\u1ecb \u0111\u1ed9 c\u1ee9ng \u0111\u01b0\u1ee3c ki\u1ec3m tra d\u01b0\u1edbi t\u1ea3i tr\u1ecdng quy \u0111\u1ecbnh (v\u00ed d\u1ee5: HV 0.3 bi\u1ec3u th\u1ecb \u0111\u1ed9 c\u1ee9ng Vickers v\u1edbi t\u1ea3i tr\u1ecdng 0,3 kgf).<\/p>\n<ol dir=\"auto\">\n<li>\u0110\u1ea3m b\u1ea3o c\u00e1c \u1ed1c v\u00edt \u0111\u01b0\u1ee3c x\u1eed l\u00fd nhi\u1ec7t \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c \u0111\u1ed9 c\u1ee9ng c\u1ea7n thi\u1ebft nh\u1eb1m t\u1ed1i \u01b0u h\u00f3a hi\u1ec7u su\u1ea5t.<\/li>\n<li>S\u1eed d\u1ee5ng thi\u1ebft b\u1ecb \u0111\u00e3 \u0111\u01b0\u1ee3c hi\u1ec7u chu\u1ea9n \u0111\u1ec3 ki\u1ec3m tra \u0111\u1ed9 c\u1ee9ng v\u00e0 m\u00f4-men xo\u1eafn nh\u1eb1m tu\u00e2n th\u1ee7 ti\u00eau chu\u1ea9n.<\/li>\n<li>C\u1ea7n xem x\u00e9t t\u00ednh t\u01b0\u01a1ng th\u00edch v\u1eadt li\u1ec7u khi l\u1ef1a ch\u1ecdn k\u00edch th\u01b0\u1edbc v\u00edt cho c\u00e1c \u1ee9ng d\u1ee5ng c\u1ee5 th\u1ec3.<\/li>\n<\/ol>\n<\/section>\n<section>\n<h2 dir=\"auto\">Ti\u00eau chu\u1ea9n thay th\u1ebf<\/h2>\n<p dir=\"auto\">\u0110\u1ec3 so s\u00e1nh t\u01b0\u01a1ng \u0111\u01b0\u01a1ng qu\u1ed1c t\u1ebf, h\u00e3y tham kh\u1ea3o ti\u00eau chu\u1ea9n ISO 2702-2011, ti\u00eau chu\u1ea9n n\u00e0y cung c\u1ea5p c\u00e1c th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt t\u01b0\u01a1ng t\u1ef1 cho v\u00edt t\u1ef1 ren b\u1eb1ng th\u00e9p carbon \u0111\u01b0\u1ee3c x\u1eed l\u00fd nhi\u1ec7t. Ti\u00eau chu\u1ea9n n\u00e0y c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng thay th\u1ebf cho nhau trong nhi\u1ec1u b\u1ed1i c\u1ea3nh to\u00e0n c\u1ea7u, \u0111\u1ea3m b\u1ea3o t\u00ednh t\u01b0\u01a1ng th\u00edch ch\u00e9o trong thi\u1ebft k\u1ebf v\u00e0 mua s\u1eafm.<\/p>\n<p>T\u1ea3i xu\u1ed1ng file PDF ti\u00eau chu\u1ea9n ISO 2702-2011<\/section>\n<section>\n<h2 dir=\"auto\">C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p (FAQ)<\/h2>\n<dl>\n<dt>\u0110\u1ed9 c\u1ee9ng b\u1ec1 m\u1eb7t c\u00f3 \u00fd ngh\u0129a g\u00ec \u0111\u1ed1i v\u1edbi v\u00edt t\u1ef1 ren?<\/dt>\n<dd>\u0110\u1ed9 c\u1ee9ng b\u1ec1 m\u1eb7t, \u0111\u01b0\u1ee3c \u0111\u1eb7t \u1edf m\u1ee9c t\u1ed1i thi\u1ec3u 450 HV 0.3, \u0111\u1ea3m b\u1ea3o v\u00edt c\u00f3 th\u1ec3 c\u1eaft v\u00e0 t\u1ea1o ren hi\u1ec7u qu\u1ea3 trong v\u1eadt li\u1ec7u m\u1ee5c ti\u00eau m\u00e0 kh\u00f4ng b\u1ecb bi\u1ebfn d\u1ea1ng ho\u1eb7c m\u00e0i m\u00f2n s\u1edbm, \u0111i\u1ec1u n\u00e0y r\u1ea5t quan tr\u1ecdng \u0111\u1ed1i v\u1edbi vi\u1ec7c si\u1ebft ch\u1eb7t \u0111\u00e1ng tin c\u1eady trong m\u00f4i tr\u01b0\u1eddng ch\u1ecbu t\u1ea3i cao.<\/dd>\n<dd><\/dd>\n<dt>\u0110\u1ed9 s\u00e2u c\u1ee7a v\u1ee5 vi\u1ec7c \u0111\u01b0\u1ee3c \u0111o l\u01b0\u1eddng nh\u01b0 th\u1ebf n\u00e0o v\u00e0 t\u1ea1i sao \u0111i\u1ec1u \u0111\u00f3 l\u1ea1i quan tr\u1ecdng?<\/dt>\n<dd>\u0110\u1ed9 d\u00e0y l\u1edbp t\u00f4i \u0111\u01b0\u1ee3c \u0111o b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p ki\u1ec3m tra c\u1ea5u tr\u00fac kim lo\u1ea1i sau khi t\u00f4i th\u1ea5m cacbon. \u0110\u1ed9 d\u00e0y n\u00e0y dao \u0111\u1ed9ng t\u1eeb t\u1ed1i thi\u1ec3u 0,04 mm \u0111\u1ed1i v\u1edbi c\u00e1c v\u00edt nh\u1ecf \u0111\u1ebfn 0,15 mm \u0111\u1ed1i v\u1edbi c\u00e1c v\u00edt l\u1edbn h\u01a1n, t\u1ea1o ra m\u1ed9t l\u1edbp ngo\u00e0i c\u1ee9ng ch\u1eafc trong khi v\u1eabn gi\u1eef \u0111\u01b0\u1ee3c l\u00f5i c\u1ee9ng h\u01a1n \u0111\u1ec3 ch\u1ed1ng n\u1ee9t d\u01b0\u1edbi t\u1ea3i tr\u1ecdng.<\/dd>\n<dd><\/dd>\n<dt>Th\u1eed nghi\u1ec7m m\u00f4-men xo\u1eafn ph\u00e1 v\u1ee1 cho th\u1ea5y \u0111i\u1ec1u g\u00ec?<\/dt>\n<dd>Th\u1eed nghi\u1ec7m m\u00f4-men xo\u1eafn ph\u00e1 v\u1ee1, v\u1edbi gi\u00e1 tr\u1ecb t\u1ed1i thi\u1ec3u t\u1eeb 0,45 N\u00b7m \u0111\u1ed1i v\u1edbi ST2.2 \u0111\u1ebfn 68 N\u00b7m \u0111\u1ed1i v\u1edbi ST9.5, x\u00e1c minh \u0111\u1ed9 b\u1ec1n xo\u1eafn c\u1ee7a v\u00edt, \u0111\u1ea3m b\u1ea3o v\u00edt c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c l\u1eafp \u0111\u1eb7t m\u00e0 kh\u00f4ng b\u1ecb g\u00e3y v\u00e0 ch\u1ecbu \u0111\u01b0\u1ee3c m\u00f4-men xo\u1eafn trong qu\u00e1 tr\u00ecnh v\u1eadn h\u00e0nh.<\/dd>\n<dd><\/dd>\n<dt>C\u00f3 \u0111i\u1ec1u ki\u1ec7n ki\u1ec3m tra c\u1ee5 th\u1ec3 n\u00e0o cho hi\u1ec7u su\u1ea5t g\u00f5 ph\u00edm kh\u00f4ng?<\/dt>\n<dd>\u0110\u00fang v\u1eady, c\u00e1c b\u00e0i ki\u1ec3m tra s\u1eed d\u1ee5ng c\u00e1c t\u1ea5m ti\u00eau chu\u1ea9n c\u00f3 \u0111\u1ed9 d\u00e0y x\u00e1c \u0111\u1ecbnh (v\u00ed d\u1ee5: 1,17-1,3 mm cho ST2.2) v\u00e0 \u0111\u01b0\u1eddng k\u00ednh l\u1ed7 (v\u00ed d\u1ee5: 1,905-1,955 mm). Ch\u00fang m\u00f4 ph\u1ecfng c\u00e1c t\u00ecnh hu\u1ed1ng l\u1eafp \u0111\u1eb7t, x\u00e1c nh\u1eadn kh\u1ea3 n\u0103ng c\u1ee7a v\u00edt c\u00f3 th\u1ec3 v\u1eb7n m\u00e0 kh\u00f4ng b\u1ecb tr\u1eddn ren ho\u1eb7c h\u1ecfng.<\/dd>\n<dd><\/dd>\n<dt>Ti\u00eau chu\u1ea9n GB\/T 3098.5-2016 so s\u00e1nh nh\u01b0 th\u1ebf n\u00e0o v\u1edbi ti\u00eau chu\u1ea9n ISO 2702?<\/dt>\n<dd>C\u1ea3 hai ti\u00eau chu\u1ea9n \u0111\u1ec1u t\u01b0\u01a1ng \u0111\u1ed3ng v\u1ec1 y\u00eau c\u1ea7u t\u00ednh ch\u1ea5t c\u01a1 h\u1ecdc, nh\u01b0ng GB\/T 3098.5-2016 \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf ri\u00eang cho ng\u00e0nh s\u1ea3n xu\u1ea5t c\u1ee7a Trung Qu\u1ed1c, trong khi ISO 2702 c\u00f3 ph\u1ea1m vi ch\u1ea5p nh\u1eadn qu\u1ed1c t\u1ebf r\u1ed9ng h\u01a1n. Lu\u00f4n lu\u00f4n ki\u1ec3m tra s\u1ef1 t\u01b0\u01a1ng \u0111\u01b0\u01a1ng cho t\u1eebng d\u1ef1 \u00e1n c\u1ee5 th\u1ec3.<\/dd>\n<dd><\/dd>\n<dt>Theo ti\u00eau chu\u1ea9n n\u00e0y, c\u00e1c v\u1eadt li\u1ec7u n\u00e0o th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho \u1ed1c v\u00edt?<\/dt>\n<dd>Ch\u1ee7 y\u1ebfu l\u00e0 th\u00e9p cacbon t\u00f4i c\u1ee9ng, \u0111\u01b0\u1ee3c x\u1eed l\u00fd nhi\u1ec7t \u0111\u1ec3 \u0111\u00e1p \u1ee9ng c\u00e1c th\u00f4ng s\u1ed1 \u0111\u1ed9 c\u1ee9ng. C\u00e1c bi\u1ebfn th\u1ec3 th\u00e9p kh\u00f4ng g\u1ec9 c\u00f3 th\u1ec3 y\u00eau c\u1ea7u c\u00e1c ti\u00eau chu\u1ea9n ri\u00eang, v\u00ec ti\u00eau chu\u1ea9n n\u00e0y t\u1eadp trung v\u00e0o th\u00e9p cacbon d\u00f9ng trong c\u00f4ng nghi\u1ec7p n\u00f3i chung.<\/dd>\n<\/dl>\n<\/section>","protected":false},"excerpt":{"rendered":"<p>Introduction to GB\/T 3098.5-2016 Standard The GB\/T 3098.5-2016 standard specifies the mechanical properties of self-tapping screws, which are essential fasteners designed to form their own threads in materials such as metals, plastics, and wood without the need for pre-drilled holes. This standard ensures reliability in applications ranging from automotive assembly to construction and electronics manufacturing. [&hellip;]<\/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-5702","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\/5702","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=5702"}],"version-history":[{"count":2,"href":"https:\/\/korea-transmission.com\/vi\/wp-json\/wp\/v2\/posts\/5702\/revisions"}],"predecessor-version":[{"id":5704,"href":"https:\/\/korea-transmission.com\/vi\/wp-json\/wp\/v2\/posts\/5702\/revisions\/5704"}],"wp:attachment":[{"href":"https:\/\/korea-transmission.com\/vi\/wp-json\/wp\/v2\/media?parent=5702"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/korea-transmission.com\/vi\/wp-json\/wp\/v2\/categories?post=5702"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/korea-transmission.com\/vi\/wp-json\/wp\/v2\/tags?post=5702"}],"curies":[{"name":"trang web","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}