{"id":5554,"date":"2025-12-19T08:13:58","date_gmt":"2025-12-19T08:13:58","guid":{"rendered":"https:\/\/korea-transmission.com\/?p=5554"},"modified":"2025-12-19T08:14:35","modified_gmt":"2025-12-19T08:14:35","slug":"technical-standards-for-set-screws-according-to-gb-t-3098-3-2016","status":"publish","type":"post","link":"https:\/\/korea-transmission.com\/vi\/blog\/technical-standards-for-set-screws-according-to-gb-t-3098-3-2016\/","title":{"rendered":"Ti\u00eau chu\u1ea9n k\u1ef9 thu\u1eadt cho v\u00edt \u0111\u1ecbnh v\u1ecb theo GB\/T 3098.3-2016"},"content":{"rendered":"<div style=\"font-family: Arial, sans-serif; line-height: 1.6; max-width: 1200px; margin: 0 auto; padding: 20px; background-color: #f9f9f9; border-radius: 8px; box-shadow: 0 2px 10px rgba(0,0,0,0.1);\">\n<h2>Gi\u1edbi thi\u1ec7u<\/h2>\n<p>V\u1edbi kinh nghi\u1ec7m d\u00e0y d\u1eb7n trong l\u0129nh v\u1ef1c v\u1eadt li\u1ec7u c\u01a1 kh\u00ed, t\u00f4i \u0111\u00e3 l\u00e0m vi\u1ec7c s\u00e2u r\u1ed9ng v\u1edbi c\u00e1c ti\u00eau chu\u1ea9n qu\u1ed1c gia v\u00e0 qu\u1ed1c t\u1ebf v\u1ec1 \u1ed1c v\u00edt, bao g\u1ed3m c\u1ea3 c\u00e1c ti\u00eau chu\u1ea9n quy \u0111\u1ecbnh v\u1ec1 v\u00edt \u0111\u1ecbnh v\u1ecb. Ti\u00eau chu\u1ea9n qu\u1ed1c gia quan tr\u1ecdng c\u1ee7a Trung Qu\u1ed1c, GB\/T 3098.3-2016, quy \u0111\u1ecbnh c\u00e1c \u0111\u1eb7c t\u00ednh c\u01a1 h\u1ecdc c\u1ee7a v\u00edt \u0111\u1ecbnh v\u1ecb, \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 tin c\u1eady c\u1ee7a ch\u00fang trong nhi\u1ec1u \u1ee9ng d\u1ee5ng c\u00f4ng nghi\u1ec7p kh\u00e1c nhau nh\u01b0 l\u1eafp r\u00e1p m\u00e1y m\u00f3c, linh ki\u1ec7n \u00f4 t\u00f4 v\u00e0 k\u1ef9 thu\u1eadt ch\u00ednh x\u00e1c. Ti\u00eau chu\u1ea9n n\u00e0y ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c th\u00f4ng l\u1ec7 to\u00e0n c\u1ea7u, t\u01b0\u01a1ng \u0111\u1ed3ng v\u1edbi ISO 898-5, v\u00e0 t\u1eadp trung v\u00e0o c\u00e1c c\u1ea5p \u0111\u1ed9 c\u1ee9ng, th\u00e0nh ph\u1ea7n v\u1eadt li\u1ec7u v\u00e0 ti\u00eau ch\u00ed hi\u1ec7u su\u1ea5t \u0111\u1ec3 ng\u0103n ng\u1eeba h\u01b0 h\u1ecfng d\u01b0\u1edbi t\u1ea3i tr\u1ecdng.<\/p>\n<p>Trong b\u00e0i vi\u1ebft n\u00e0y, t\u00f4i t\u1ed1i \u01b0u h\u00f3a v\u00e0 m\u1edf r\u1ed9ng c\u00e1c y\u1ebfu t\u1ed1 c\u1ed1t l\u00f5i c\u1ee7a ti\u00eau chu\u1ea9n, k\u1ebft h\u1ee3p c\u00e1c gi\u1ea3i th\u00edch chi ti\u1ebft v\u1ec1 th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc v\u00e0 t\u00ednh ch\u1ea5t c\u01a1 h\u1ecdc d\u1ef1a tr\u00ean d\u1eef li\u1ec7u \u0111\u00e3 \u0111\u01b0\u1ee3c ki\u1ec3m ch\u1ee9ng. \u0110i\u1ec1u n\u00e0y \u0111\u1ea3m b\u1ea3o tu\u00e2n th\u1ee7 c\u00e1c th\u1ef1c ti\u1ec5n t\u1ed1t nh\u1ea5t trong ng\u00e0nh, nh\u1ea5n m\u1ea1nh c\u00e1c kh\u00eda c\u1ea1nh nh\u01b0 x\u1eed l\u00fd nhi\u1ec7t, gi\u1edbi h\u1ea1n kh\u1eed cacbon v\u00e0 ph\u01b0\u01a1ng ph\u00e1p ki\u1ec3m tra \u0111\u1ed9 c\u1ee9ng.<\/p>\n<h2>M\u1ee5c l\u1ee5c<\/h2>\n<ul style=\"list-style-type: disc; padding-left: 20px;\">\n<li><a style=\"color: #007bff; text-decoration: none;\" href=\"#chemical-composition\">Th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc c\u1ee7a v\u1eadt li\u1ec7u v\u00edt \u0111\u1ecbnh v\u1ecb<\/a><\/li>\n<li><a style=\"color: #007bff; text-decoration: none;\" href=\"#mechanical-properties\">T\u00ednh ch\u1ea5t c\u01a1 h\u1ecdc c\u1ee7a v\u00edt \u0111\u1ecbnh v\u1ecb<\/a><\/li>\n<li><a style=\"color: #007bff; text-decoration: none;\" href=\"#faq\">C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p (FAQ)<\/a><\/li>\n<\/ul>\n<div id=\"chemical-composition\">\n<h2>Th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc c\u1ee7a v\u1eadt li\u1ec7u v\u00edt \u0111\u1ecbnh v\u1ecb<\/h2>\n<p>\u1ed0c v\u00edt \u0111\u1ecbnh v\u1ecb ph\u1ea3i \u0111\u00e1p \u1ee9ng c\u00e1c y\u00eau c\u1ea7u v\u1ec1 th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc c\u1ee5 th\u1ec3 \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c \u0111\u1ed9 c\u1ee9ng v\u00e0 \u0111\u1ed9 b\u1ec1n c\u01a1 h\u1ecdc mong mu\u1ed1n. Ti\u00eau chu\u1ea9n n\u00e0y ph\u00e2n lo\u1ea1i v\u1eadt li\u1ec7u theo c\u1ea5p \u0111\u1ed9 c\u1ee9ng (14H, 22H, 33H v\u00e0 45H), quy \u0111\u1ecbnh gi\u1edbi h\u1ea1n h\u00e0m l\u01b0\u1ee3ng cacbon (C), ph\u1ed1t pho (P) v\u00e0 l\u01b0u hu\u1ef3nh (S). C\u00e1c quy tr\u00ecnh x\u1eed l\u00fd nhi\u1ec7t nh\u01b0 t\u00f4i v\u00e0 ram l\u00e0 b\u1eaft bu\u1ed9c \u0111\u1ed1i v\u1edbi c\u00e1c lo\u1ea1i \u1ed1c v\u00edt c\u00f3 \u0111\u1ed9 c\u1ee9ng cao h\u01a1n \u0111\u1ec3 t\u0103ng c\u01b0\u1eddng \u0111\u1ed9 b\u1ec1n. L\u01b0u \u00fd r\u1eb1ng vi\u1ec7c l\u00e0m c\u1ee9ng b\u1ec1 m\u1eb7t kh\u00f4ng \u0111\u01b0\u1ee3c ph\u00e9p, v\u00e0 trong tr\u01b0\u1eddng h\u1ee3p tranh ch\u1ea5p, c\u1ea7n ph\u1ea3i ph\u00e2n t\u00edch s\u1ea3n ph\u1ea9m ho\u00e0n thi\u1ec7n.<\/p>\n<table style=\"width: 100%; border-collapse: collapse; margin: 20px 0; box-shadow: 0 1px 3px rgba(0,0,0,0.2);\">\n<thead>\n<tr style=\"background-color: #007bff; color: white;\">\n<th style=\"padding: 10px; border: 1px solid #ddd; text-align: center;\" colspan=\"2\">\u0110\u1ed9 c\u1ee9ng<\/th>\n<th style=\"padding: 10px; border: 1px solid #ddd; text-align: center;\">\u0110\u1ed9 c\u1ee9ng Vickers HV t\u1ed1i thi\u1ec3u<\/th>\n<th style=\"padding: 10px; border: 1px solid #ddd; text-align: center;\">V\u1eadt li\u1ec7u<\/th>\n<th style=\"padding: 10px; border: 1px solid #ddd; text-align: center;\">X\u1eed l\u00fd nhi\u1ec7t\u00b9<\/th>\n<th style=\"padding: 10px; border: 1px solid #ddd; text-align: center;\">C%, max\u00b2<\/th>\n<th style=\"padding: 10px; border: 1px solid #ddd; text-align: center;\">C%, min\u00b2<\/th>\n<th style=\"padding: 10px; border: 1px solid #ddd; text-align: center;\">P%, max\u00b2<\/th>\n<th style=\"padding: 10px; border: 1px solid #ddd; text-align: center;\">S%, max\u00b2<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"padding: 10px; border: 1px solid #ddd; text-align: center;\" colspan=\"2\">14 gi\u1edd<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd; text-align: center;\">140<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd; text-align: center;\">Th\u00e9p cacbon\u00b3<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd; text-align: center;\">\/<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd; text-align: center;\">0.5<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd; text-align: center;\">\/<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd; text-align: center;\">0.11<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd; text-align: center;\">0.15<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 10px; border: 1px solid #ddd; text-align: center;\" colspan=\"2\">22 gi\u1edd<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd; text-align: center;\">220<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd; text-align: center;\">Th\u00e9p cacbon\u2074<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd; text-align: center;\">T\u00f4i luy\u1ec7n v\u00e0 ram<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd; text-align: center;\">0.5<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd; text-align: center;\">0.19<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd; text-align: center;\">0.05<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd; text-align: center;\">0.05<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 10px; border: 1px solid #ddd; text-align: center;\" colspan=\"2\">33 gi\u1edd<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd; text-align: center;\">330<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd; text-align: center;\">Th\u00e9p cacbon\u2074<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd; text-align: center;\">T\u00f4i luy\u1ec7n v\u00e0 ram<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd; text-align: center;\">0.5<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd; text-align: center;\">0.19<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd; text-align: center;\">0.05<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd; text-align: center;\">0.05<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 10px; border: 1px solid #ddd; text-align: center;\">–<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd; text-align: center;\" rowspan=\"3\">45 gi\u1edd<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd; text-align: center;\">450<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd; text-align: center;\">Th\u00e9p cacbon\u2074,\u2075<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd; text-align: center;\">T\u00f4i luy\u1ec7n v\u00e0 ram<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd; text-align: center;\">0.5<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd; text-align: center;\">0.45<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd; text-align: center;\">0.05<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd; text-align: center;\">0.05<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 10px; border: 1px solid #ddd; text-align: center;\">–<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd; text-align: center;\">450<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd; text-align: center;\">Th\u00e9p cacbon c\u00f3 th\u00eam c\u00e1c nguy\u00ean t\u1ed1\u2074 (bo, mangan ho\u1eb7c crom)<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd; text-align: center;\">T\u00f4i luy\u1ec7n v\u00e0 ram<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd; text-align: center;\">0.5<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd; text-align: center;\">0.28<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd; text-align: center;\">0.05<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd; text-align: center;\">0.05<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 10px; border: 1px solid #ddd; text-align: center;\">–<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd; text-align: center;\">450<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd; text-align: center;\">Th\u00e9p h\u1ee3p kim\u2074,\u2076<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd; text-align: center;\">T\u00f4i luy\u1ec7n v\u00e0 ram<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd; text-align: center;\">0.5<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd; text-align: center;\">0.3<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd; text-align: center;\">0.05<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd; text-align: center;\">0.05<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p style=\"font-size: 14px; color: #666;\"><strong>Ghi ch\u00fa:<\/strong><br \/>\n\u00b9 Kh\u00f4ng \u0111\u01b0\u1ee3c ph\u00e9p l\u00e0m c\u1ee9ng b\u1ec1 m\u1eb7t.<br \/>\n\u00b2 Trong tr\u01b0\u1eddng h\u1ee3p c\u00f3 tranh ch\u1ea5p, h\u00e3y ti\u1ebfn h\u00e0nh ph\u00e2n t\u00edch s\u1ea3n ph\u1ea9m ho\u00e0n thi\u1ec7n.<br \/>\n\u00b3 Th\u00e9p d\u1ec5 gia c\u00f4ng c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng v\u1edbi h\u00e0m l\u01b0\u1ee3ng Pb t\u1ed1i \u0111a 0,35%, P 0,11%, S 0,34%.<br \/>\n\u2074 C\u00f3 th\u1ec3 s\u1eed d\u1ee5ng th\u00e9p c\u00f3 h\u00e0m l\u01b0\u1ee3ng Pb t\u1ed1i \u0111a l\u00e0 0,35%.<br \/>\n\u2075 Ch\u1ec9 \u00e1p d\u1ee5ng cho d \u2264 M16.<br \/>\n\u2076 Th\u00e9p h\u1ee3p kim ph\u1ea3i ch\u1ee9a \u00edt nh\u1ea5t m\u1ed9t trong c\u00e1c nguy\u00ean t\u1ed1 sau: Cr 0,30%, Ni 0,30%, Mo 0,20%, V 0,10%. \u0110\u1ed1i v\u1edbi nhi\u1ec1u nguy\u00ean t\u1ed1, t\u1ed5ng h\u00e0m l\u01b0\u1ee3ng ph\u1ea3i \u0111\u1ea1t \u00edt nh\u1ea5t 70% so v\u1edbi t\u1ed5ng h\u00e0m l\u01b0\u1ee3ng t\u1ed1i thi\u1ec3u c\u1ee7a t\u1eebng nguy\u00ean t\u1ed1 ri\u00eang l\u1ebb.<\/p>\n<p>Tr\u00ean th\u1ef1c t\u1ebf, c\u00e1c th\u00e0nh ph\u1ea7n n\u00e0y \u0111\u1ea3m b\u1ea3o v\u00edt \u0111\u1ecbnh v\u1ecb ch\u1ecbu \u0111\u01b0\u1ee3c l\u1ef1c c\u1eaft v\u00e0 duy tr\u00ec \u0111\u1ed9 b\u1ec1n trong m\u00f4i tr\u01b0\u1eddng rung \u0111\u1ed9ng cao. V\u00ed d\u1ee5, h\u00e0m l\u01b0\u1ee3ng carbon cao h\u01a1n trong c\u00e1c lo\u1ea1i th\u00e9p 45H c\u1ea3i thi\u1ec7n kh\u1ea3 n\u0103ng t\u00f4i c\u1ee9ng nh\u01b0ng \u0111\u00f2i h\u1ecfi s\u1ef1 ki\u1ec3m so\u00e1t ch\u00ednh x\u00e1c \u0111\u1ec3 tr\u00e1nh b\u1ecb gi\u00f2n.<\/p>\n<\/div>\n<div id=\"mechanical-properties\">\n<h2>T\u00ednh ch\u1ea5t c\u01a1 h\u1ecdc c\u1ee7a v\u00edt \u0111\u1ecbnh v\u1ecb<\/h2>\n<p>C\u00e1c \u0111\u1eb7c t\u00ednh c\u01a1 h\u1ecdc \u0111\u01b0\u1ee3c n\u00eau trong ti\u00eau chu\u1ea9n GB\/T 3098.3-2016 bao g\u1ed3m ph\u1ea1m vi \u0111\u1ed9 c\u1ee9ng \u0111\u01b0\u1ee3c \u0111o b\u1eb1ng c\u00e1c ph\u01b0\u01a1ng ph\u00e1p Vickers (HV), Brinell (HBW) v\u00e0 Rockwell (HRB\/HRC), c\u00f9ng v\u1edbi gi\u1edbi h\u1ea1n kh\u1eed cacbon v\u00e0 \u0111\u1ed9 c\u1ee9ng b\u1ec1 m\u1eb7t. Nh\u1eefng \u0111i\u1ec1u n\u00e0y \u0111\u1ea3m b\u1ea3o v\u00edt \u0111\u1ecbnh v\u1ecb ho\u1ea1t \u0111\u1ed9ng d\u01b0\u1edbi t\u1ea3i tr\u1ecdng d\u1ecdc tr\u1ee5c m\u00e0 kh\u00f4ng b\u1ecb bi\u1ebfn d\u1ea1ng ho\u1eb7c h\u01b0 h\u1ecfng. Vi\u1ec7c ki\u1ec3m tra \u0111\u01b0\u1ee3c ti\u1ebfn h\u00e0nh tr\u00ean c\u00e1c s\u1ea3n ph\u1ea9m ho\u00e0n thi\u1ec7n \u0111\u1ec3 x\u00e1c minh s\u1ef1 tu\u00e2n th\u1ee7.<\/p>\n<table style=\"width: 100%; border-collapse: collapse; margin: 20px 0; box-shadow: 0 1px 3px rgba(0,0,0,0.2);\">\n<thead>\n<tr style=\"background-color: #007bff; color: white;\">\n<th style=\"padding: 10px; border: 1px solid #ddd; text-align: center;\">\u0110\u1ed9 c\u1ee9ng<\/th>\n<th style=\"padding: 10px; border: 1px solid #ddd; text-align: center;\">\u0110\u1ed9 c\u1ee9ng Vickers HV10 t\u1ed1i \u0111a<\/th>\n<th style=\"padding: 10px; border: 1px solid #ddd; text-align: center;\">\u0110\u1ed9 c\u1ee9ng Brinell HBW F=30D\u00b2 t\u1ed1i thi\u1ec3u<\/th>\n<th style=\"padding: 10px; border: 1px solid #ddd; text-align: center;\">\u0110\u1ed9 c\u1ee9ng Brinell HBW F=30D\u00b2 t\u1ed1i \u0111a<\/th>\n<th style=\"padding: 10px; border: 1px solid #ddd; text-align: center;\">\u0110\u1ed9 c\u1ee9ng Rockwell HRB t\u1ed1i thi\u1ec3u<\/th>\n<th style=\"padding: 10px; border: 1px solid #ddd; text-align: center;\">\u0110\u1ed9 c\u1ee9ng Rockwell HRB t\u1ed1i \u0111a<\/th>\n<th style=\"padding: 10px; border: 1px solid #ddd; text-align: center;\">\u0110\u1ed9 c\u1ee9ng Rockwell HRC t\u1ed1i thi\u1ec3u<\/th>\n<th style=\"padding: 10px; border: 1px solid #ddd; text-align: center;\">\u0110\u1ed9 c\u1ee9ng Rockwell HRC t\u1ed1i \u0111a<\/th>\n<th style=\"padding: 10px; border: 1px solid #ddd; text-align: center;\">Chi\u1ec1u cao l\u1edbp kh\u00f4ng kh\u1eed cacbon c\u1ee7a ren E\/mm t\u1ed1i thi\u1ec3u<\/th>\n<th style=\"padding: 10px; border: 1px solid #ddd; text-align: center;\">Chi\u1ec1u cao l\u1edbp kh\u1eed cacbon to\u00e0n ph\u1ea7n c\u1ee7a ren (G\/mm t\u1ed1i \u0111a)<\/th>\n<th style=\"padding: 10px; border: 1px solid #ddd; text-align: center;\">\u0110\u1ed9 c\u1ee9ng b\u1ec1 m\u1eb7t HV0.3 t\u1ed1i \u0111a<\/th>\n<th style=\"padding: 10px; border: 1px solid #ddd; text-align: center;\">Kh\u00f4ng th\u1ea5m cacbon HV0.3 t\u1ed1i \u0111a<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"padding: 10px; border: 1px solid #ddd; text-align: center;\">14 gi\u1edd<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd; text-align: center;\">290<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd; text-align: center;\">133<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd; text-align: center;\">276<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd; text-align: center;\">75<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd; text-align: center;\">105<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd; text-align: center;\">–<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd; text-align: center;\">–<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd; text-align: center;\">–<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd; text-align: center;\">–<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd; text-align: center;\">–<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd; text-align: center;\">–<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 10px; border: 1px solid #ddd; text-align: center;\">22 gi\u1edd<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd; text-align: center;\">300<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd; text-align: center;\">209<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd; text-align: center;\">285<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd; text-align: center;\">95<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd; text-align: center;\">M\u1ed9t<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd; text-align: center;\">M\u1ed9t<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd; text-align: center;\">30<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd; text-align: center;\">1\/2 H\u2081<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd; text-align: center;\">0.015<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd; text-align: center;\">320<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd; text-align: center;\">c<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 10px; border: 1px solid #ddd; text-align: center;\">33 gi\u1edd<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd; text-align: center;\">440<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd; text-align: center;\">314<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd; text-align: center;\">418<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd; text-align: center;\">–<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd; text-align: center;\">–<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd; text-align: center;\">33<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd; text-align: center;\">44<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd; text-align: center;\">2\/3 H\u2081<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd; text-align: center;\">0.015<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd; text-align: center;\">450<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd; text-align: center;\">c<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 10px; border: 1px solid #ddd; text-align: center;\">45 gi\u1edd<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd; text-align: center;\">560<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd; text-align: center;\">428<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd; text-align: center;\">532<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd; text-align: center;\">–<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd; text-align: center;\">–<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd; text-align: center;\">45<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd; text-align: center;\">53<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd; text-align: center;\">3\/4 H\u2081<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd; text-align: center;\">b<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd; text-align: center;\">580<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd; text-align: center;\">c<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p style=\"font-size: 14px; color: #666;\"><strong>Ghi ch\u00fa:<\/strong><br \/>\na. \u0110\u1ed1i v\u1edbi th\u00e9p c\u1ea5p 22H, s\u1eed d\u1ee5ng gi\u00e1 tr\u1ecb HRB t\u1ed1i thi\u1ec3u v\u00e0 HRC t\u1ed1i \u0111a n\u1ebfu ti\u1ebfn h\u00e0nh th\u1eed nghi\u1ec7m \u0111\u1ed9 c\u1ee9ng Rockwell.<br \/>\nb. Kh\u00f4ng \u0111\u01b0\u1ee3c ph\u00e9p c\u00f3 l\u1edbp kh\u1eed cacbon ho\u00e0n to\u00e0n \u0111\u1ed1i v\u1edbi 45H.<br \/>\nc. Khi \u0111o b\u1eb1ng HV0.3, \u0111\u1ed9 c\u1ee9ng b\u1ec1 m\u1eb7t kh\u00f4ng \u0111\u01b0\u1ee3c v\u01b0\u1ee3t qu\u00e1 \u0111\u1ed9 c\u1ee9ng l\u00f5i qu\u00e1 30 \u0111\u01a1n v\u1ecb HV.<\/p>\n<p>Nh\u1eefng \u0111\u1eb7c t\u00ednh n\u00e0y r\u1ea5t c\u1ea7n thi\u1ebft cho c\u00e1c \u1ee9ng d\u1ee5ng \u0111\u00f2i h\u1ecfi kh\u1ea3 n\u0103ng ch\u1ecbu momen xo\u1eafn cao. V\u00ed d\u1ee5, trong v\u00edt \u0111\u1ecbnh v\u1ecb 45H, vi\u1ec7c ki\u1ec3m so\u00e1t kh\u1eed cacbon nghi\u00eam ng\u1eb7t ng\u0103n ng\u1eeba s\u1ef1 suy y\u1ebfu c\u1ee7a ren, \u0111i\u1ec1u n\u00e0y r\u1ea5t quan tr\u1ecdng trong m\u00e1y m\u00f3c h\u1ea1ng n\u1eb7ng.<\/p>\n<\/div>\n<div id=\"faq\">\n<h2>C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p (FAQ)<\/h2>\n<dl style=\"margin: 20px 0;\">\n<dt style=\"font-weight: bold; margin-top: 10px;\">1. S\u1ef1 kh\u00e1c bi\u1ec7t ch\u00ednh gi\u1eefa c\u00e1c c\u1ea5p \u0111\u1ed9 c\u1ee9ng trong ti\u00eau chu\u1ea9n GB\/T 3098.3-2016 l\u00e0 g\u00ec?<\/dt>\n<dd>C\u00e1c m\u00e1c th\u00e9p (t\u1eeb 14H \u0111\u1ebfn 45H) c\u00f3 \u0111\u1ed9 c\u1ee9ng t\u1ed1i thi\u1ec3u v\u00e0 y\u00eau c\u1ea7u x\u1eed l\u00fd nhi\u1ec7t t\u0103ng d\u1ea7n, v\u1edbi c\u00e1c m\u00e1c cao h\u01a1n nh\u01b0 45H s\u1eed d\u1ee5ng th\u00e9p h\u1ee3p kim \u0111\u1ec3 c\u00f3 \u0111\u1ed9 b\u1ec1n v\u01b0\u1ee3t tr\u1ed9i trong c\u00e1c \u1ee9ng d\u1ee5ng \u0111\u00f2i h\u1ecfi cao, trong khi c\u00e1c m\u00e1c th\u1ea5p h\u01a1n nh\u01b0 14H \u0111\u1ee7 d\u00f9ng cho m\u1ee5c \u0111\u00edch th\u00f4ng th\u01b0\u1eddng.<\/dd>\n<dt style=\"font-weight: bold; margin-top: 10px;\">2. T\u1ea1i sao vi\u1ec7c t\u00f4i c\u1ee9ng b\u1ec1 m\u1eb7t b\u1ecb c\u1ea5m trong ti\u00eau chu\u1ea9n n\u00e0y?<\/dt>\n<dd>Qu\u00e1 tr\u00ecnh t\u00f4i c\u1ee9ng b\u1ec1 m\u1eb7t c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn ph\u00e2n b\u1ed1 \u1ee9ng su\u1ea5t kh\u00f4ng \u0111\u1ed3ng \u0111\u1ec1u v\u00e0 kh\u1ea3 n\u0103ng n\u1ee9t v\u1ee1 d\u01b0\u1edbi t\u1ea3i tr\u1ecdng. Ti\u00eau chu\u1ea9n quy \u0111\u1ecbnh t\u00f4i v\u00e0 ram \u0111\u1ed3ng \u0111\u1ec1u \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o c\u00e1c \u0111\u1eb7c t\u00ednh c\u01a1 h\u1ecdc nh\u1ea5t qu\u00e1n tr\u00ean to\u00e0n b\u1ed9 v\u00edt \u0111\u1ecbnh v\u1ecb.<\/dd>\n<dt style=\"font-weight: bold; margin-top: 10px;\">3. Qu\u00e1 tr\u00ecnh kh\u1eed cacbon \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn hi\u1ec7u su\u1ea5t c\u1ee7a v\u00edt \u0111\u1ecbnh v\u1ecb nh\u01b0 th\u1ebf n\u00e0o?<\/dt>\n<dd>Qu\u00e1 tr\u00ecnh kh\u1eed cacbon l\u00e0m gi\u1ea3m h\u00e0m l\u01b0\u1ee3ng cacbon tr\u00ean b\u1ec1 m\u1eb7t, l\u00e0m y\u1ebfu ren v\u00e0 t\u0103ng nguy c\u01a1 h\u1ecfng h\u00f3c. Ti\u00eau chu\u1ea9n quy \u0111\u1ecbnh gi\u1edbi h\u1ea1n \u0111i\u1ec1u n\u00e0y (v\u00ed d\u1ee5: t\u1ed1i \u0111a 0,015 mm \u0111\u1ed1i v\u1edbi ren 22H v\u00e0 33H) \u0111\u1ec3 duy tr\u00ec \u0111\u1ed9 b\u1ec1n c\u1ee7a ren.<\/dd>\n<dt style=\"font-weight: bold; margin-top: 10px;\">4. C\u00f3 th\u1ec3 s\u1eed d\u1ee5ng th\u00e9p d\u1ec5 gia c\u00f4ng cho t\u1ea5t c\u1ea3 c\u00e1c c\u1ea5p \u0111\u1ed9 c\u1ee9ng kh\u00f4ng?<\/dt>\n<dd>Th\u00e9p d\u1ec5 c\u1eaft g\u1ecdt \u0111\u01b0\u1ee3c ph\u00e9p s\u1eed d\u1ee5ng cho th\u00e9p 14H v\u1edbi gi\u1edbi h\u1ea1n t\u1ea1p ch\u1ea5t quy \u0111\u1ecbnh, nh\u01b0ng \u0111\u1ed1i v\u1edbi c\u00e1c m\u00e1c th\u00e9p cao h\u01a1n, c\u1ea7n s\u1eed d\u1ee5ng th\u00e9p cacbon v\u00e0 th\u00e9p h\u1ee3p kim \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c \u0111\u1ed9 c\u1ee9ng c\u1ea7n thi\u1ebft m\u00e0 kh\u00f4ng \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn kh\u1ea3 n\u0103ng gia c\u00f4ng.<\/dd>\n<dt style=\"font-weight: bold; margin-top: 10px;\">5. Nh\u1eefng ph\u01b0\u01a1ng ph\u00e1p ki\u1ec3m tra n\u00e0o \u0111\u01b0\u1ee3c khuy\u1ebfn ngh\u1ecb \u0111\u1ec3 x\u00e1c minh s\u1ef1 tu\u00e2n th\u1ee7?<\/dt>\n<dd>C\u00e1c ph\u00e9p th\u1eed \u0111\u1ed9 c\u1ee9ng Vickers (HV10 ho\u1eb7c HV0.3), Brinell (HBW v\u1edbi F=30D\u00b2) v\u00e0 Rockwell (HRB\/HRC) \u0111\u01b0\u1ee3c quy \u0111\u1ecbnh. Trong c\u00e1c tranh ch\u1ea5p, ph\u00e2n t\u00edch h\u00f3a h\u1ecdc s\u1ea3n ph\u1ea9m ho\u00e0n thi\u1ec7n v\u00e0 ki\u1ec3m tra c\u1ea5u tr\u00fac kim lo\u1ea1i \u0111\u1ec3 ph\u00e1t hi\u1ec7n hi\u1ec7n t\u01b0\u1ee3ng kh\u1eed cacbon l\u00e0 r\u1ea5t c\u1ea7n thi\u1ebft.<\/dd>\n<dt style=\"font-weight: bold; margin-top: 10px;\">6. Ti\u00eau chu\u1ea9n GB\/T 3098.3-2016 so s\u00e1nh nh\u01b0 th\u1ebf n\u00e0o v\u1edbi ti\u00eau chu\u1ea9n ISO 898-5?<\/dt>\n<dd>C\u1ea3 hai ti\u00eau chu\u1ea9n \u0111\u1ec1u t\u01b0\u01a1ng t\u1ef1 nhau v\u1ec1 ph\u00e2n lo\u1ea1i \u0111\u1ed9 c\u1ee9ng v\u00e0 y\u00eau c\u1ea7u v\u1eadt li\u1ec7u, nh\u01b0ng GB\/T 3098.3-2016 bao g\u1ed3m c\u00e1c dung sai c\u1ee5 th\u1ec3 cho c\u00e1c lo\u1ea1i th\u00e9p Trung Qu\u1ed1c v\u00e0 nh\u1ea5n m\u1ea1nh vi\u1ec7c ki\u1ec3m tra s\u1ea3n ph\u1ea9m ho\u00e0n thi\u1ec7n \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o ch\u1ea5t l\u01b0\u1ee3ng.<\/dd>\n<\/dl>\n<\/div>\n<h2>Ph\u1ea7n k\u1ebft lu\u1eadn<\/h2>\n<p>Tu\u00e2n th\u1ee7 ti\u00eau chu\u1ea9n GB\/T 3098.3-2016 \u0111\u1ea3m b\u1ea3o v\u00edt \u0111\u1ecbnh v\u1ecb \u0111\u00e1p \u1ee9ng c\u00e1c ti\u00eau chu\u1ea9n c\u01a1 kh\u00ed v\u00e0 v\u1eadt li\u1ec7u nghi\u00eam ng\u1eb7t, n\u00e2ng cao an to\u00e0n v\u00e0 hi\u1ec7u su\u1ea5t trong c\u00e1c \u1ee9ng d\u1ee5ng k\u1ef9 thu\u1eadt. \u0110\u1ec3 \u0111\u01b0\u1ee3c t\u01b0 v\u1ea5n t\u00f9y ch\u1ec9nh ho\u1eb7c t\u00ecm ngu\u1ed3n cung c\u1ea5p \u1ed1c v\u00edt tu\u00e2n th\u1ee7 ti\u00eau chu\u1ea9n, h\u00e3y li\u00ean h\u1ec7 v\u1edbi nh\u00e0 cung c\u1ea5p \u0111\u01b0\u1ee3c ch\u1ee9ng nh\u1eadn.<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>Introduction As a seasoned mechanical materials expert, I have extensively worked with national and international standards for fasteners, including those governing set screws. GB\/T 3098.3-2016 is a critical Chinese national standard that specifies the mechanical properties of set screws, ensuring their reliability in various industrial applications such as machinery assembly, automotive components, and precision engineering. [&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-5554","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\/5554","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=5554"}],"version-history":[{"count":2,"href":"https:\/\/korea-transmission.com\/vi\/wp-json\/wp\/v2\/posts\/5554\/revisions"}],"predecessor-version":[{"id":5556,"href":"https:\/\/korea-transmission.com\/vi\/wp-json\/wp\/v2\/posts\/5554\/revisions\/5556"}],"wp:attachment":[{"href":"https:\/\/korea-transmission.com\/vi\/wp-json\/wp\/v2\/media?parent=5554"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/korea-transmission.com\/vi\/wp-json\/wp\/v2\/categories?post=5554"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/korea-transmission.com\/vi\/wp-json\/wp\/v2\/tags?post=5554"}],"curies":[{"name":"trang web","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}