{"id":5557,"date":"2025-12-19T08:17:10","date_gmt":"2025-12-19T08:17:10","guid":{"rendered":"https:\/\/korea-transmission.com\/?p=5557"},"modified":"2025-12-19T08:17:10","modified_gmt":"2025-12-19T08:17:10","slug":"mechanical-performance-standards-for-nuts-gb-t-3098-2-2015","status":"publish","type":"post","link":"https:\/\/korea-transmission.com\/vi\/blog\/mechanical-performance-standards-for-nuts-gb-t-3098-2-2015\/","title":{"rendered":"Ti\u00eau chu\u1ea9n v\u1ec1 t\u00ednh ch\u1ea5t c\u01a1 h\u1ecdc c\u1ee7a \u0111ai \u1ed1c: GB\/T 3098.2-2015"},"content":{"rendered":"
\n

Ti\u00eau chu\u1ea9n GB\/T 3098.2-2015 quy \u0111\u1ecbnh c\u00e1c \u0111\u1eb7c t\u00ednh c\u01a1 h\u1ecdc c\u1ee7a \u0111ai \u1ed1c ren th\u00f4 l\u00e0m t\u1eeb th\u00e9p cacbon v\u00e0 th\u00e9p h\u1ee3p kim, \u00e1p d\u1ee5ng cho c\u00e1c m\u1ee5c \u0111\u00edch k\u1ef9 thu\u1eadt chung. Ti\u00eau chu\u1ea9n n\u00e0y ph\u00f9 h\u1ee3p ch\u1eb7t ch\u1ebd v\u1edbi c\u00e1c ti\u00eau chu\u1ea9n qu\u1ed1c t\u1ebf nh\u01b0 ISO 898-2, \u0111\u1ea3m b\u1ea3o t\u00ednh t\u01b0\u01a1ng th\u00edch trong c\u00e1c h\u1ec7 th\u1ed1ng l\u1eafp gh\u00e9p. N\u00f3 bao g\u1ed3m c\u00e1c c\u1ea5p hi\u1ec7u su\u1ea5t t\u1eeb \u200b\u200b4 \u0111\u1ebfn 12, t\u1eadp trung v\u00e0o t\u1ea3i tr\u1ecdng th\u1eed, th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc, \u0111\u1ed9 c\u1ee9ng v\u00e0 kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch v\u1edbi bu l\u00f4ng, v\u00edt ho\u1eb7c \u0111inh t\u00e1n. D\u01b0\u1edbi \u0111\u00e2y, c\u00e1c kh\u00eda c\u1ea1nh ch\u00ednh \u0111\u01b0\u1ee3c tr\u00ecnh b\u00e0y chi ti\u1ebft v\u1edbi d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c tr\u00edch d\u1eabn t\u1eeb ti\u00eau chu\u1ea9n \u0111\u1ec3 tham kh\u1ea3o ch\u00ednh x\u00e1c.<\/p>\n

Gi\u00e1 tr\u1ecb t\u1ea3i tr\u1ecdng th\u1eed nghi\u1ec7m cho \u0111ai \u1ed1c ren th\u00f4<\/h2>\n

T\u1ea3i tr\u1ecdng th\u1eed nghi\u1ec7m th\u1ec3 hi\u1ec7n t\u1ea3i tr\u1ecdng t\u1ed1i \u0111a m\u00e0 \u0111ai \u1ed1c c\u00f3 th\u1ec3 ch\u1ecbu \u0111\u01b0\u1ee3c m\u00e0 kh\u00f4ng b\u1ecb bi\u1ebfn d\u1ea1ng v\u0129nh vi\u1ec5n, v\u1ec1 c\u01a1 b\u1ea3n l\u00e0 \u0111\u1ed9 b\u1ec1n k\u00e9o t\u1ed1i thi\u1ec3u m\u00e0 n\u00f3 ph\u1ea3i ch\u1ecbu \u0111\u1ef1ng. \u0110\u01a1n v\u1ecb l\u00e0 Newton (N). B\u1ea3ng sau cung c\u1ea5p c\u00e1c gi\u00e1 tr\u1ecb t\u1ea3i tr\u1ecdng th\u1eed nghi\u1ec7m cho c\u00e1c k\u00edch th\u01b0\u1edbc ren v\u00e0 c\u1ea5p \u0111\u1ed9 hi\u1ec7u su\u1ea5t kh\u00e1c nhau.<\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Ch\u1ee7 \u0111\u1ec1<\/th>\nS\u00e2n b\u00f3ng \u0111\u00e1<\/th>\nL\u1edbp 04 (N)<\/th>\nL\u1edbp 05 (N)<\/th>\nL\u1edbp 5 (N)<\/th>\nL\u1edbp 6 (N)<\/th>\nL\u1edbp 8 (N)<\/th>\nL\u1edbp 10 (N)<\/th>\nL\u1edbp 12 (N)<\/th>\n<\/tr>\n<\/thead>\n
M5<\/td>\n0.8<\/td>\n5400<\/td>\n7100<\/td>\n8250<\/td>\n9500<\/td>\n12140<\/td>\n14800<\/td>\n16300<\/td>\n<\/tr>\n
M6<\/td>\n1<\/td>\n7640<\/td>\n10000<\/td>\n11700<\/td>\n13500<\/td>\n17200<\/td>\n20900<\/td>\n23100<\/td>\n<\/tr>\n
M7<\/td>\n1<\/td>\n11000<\/td>\n14500<\/td>\n16800<\/td>\n19400<\/td>\n24700<\/td>\n30100<\/td>\n33200<\/td>\n<\/tr>\n
M8<\/td>\n1.25<\/td>\n13900<\/td>\n18300<\/td>\n21600<\/td>\n24900<\/td>\n31800<\/td>\n38100<\/td>\n42500<\/td>\n<\/tr>\n
M10<\/td>\n1.5<\/td>\n22000<\/td>\n29000<\/td>\n34200<\/td>\n39400<\/td>\n50500<\/td>\n60300<\/td>\n67300<\/td>\n<\/tr>\n
M12<\/td>\n1.75<\/td>\n32000<\/td>\n42200<\/td>\n51400<\/td>\n59000<\/td>\n74200<\/td>\n88500<\/td>\n100300<\/td>\n<\/tr>\n
M14<\/td>\n2<\/td>\n43700<\/td>\n57500<\/td>\n70200<\/td>\n80500<\/td>\n101200<\/td>\n120800<\/td>\n136900<\/td>\n<\/tr>\n
M16<\/td>\n2<\/td>\n59700<\/td>\n78500<\/td>\n95800<\/td>\n109900<\/td>\n138200<\/td>\n164900<\/td>\n186800<\/td>\n<\/tr>\n
M18<\/td>\n2.5<\/td>\n73000<\/td>\n96000<\/td>\n121000<\/td>\n138200<\/td>\n176600<\/td>\n203500<\/td>\n230400<\/td>\n<\/tr>\n
M20<\/td>\n2.5<\/td>\n93100<\/td>\n122500<\/td>\n154400<\/td>\n176400<\/td>\n225400<\/td>\n259700<\/td>\n294000<\/td>\n<\/tr>\n
M22<\/td>\n2.5<\/td>\n115100<\/td>\n151500<\/td>\n190900<\/td>\n218200<\/td>\n278800<\/td>\n321200<\/td>\n363600<\/td>\n<\/tr>\n
M24<\/td>\n3<\/td>\n134100<\/td>\n176500<\/td>\n222400<\/td>\n254200<\/td>\n324800<\/td>\n374200<\/td>\n423600<\/td>\n<\/tr>\n
M27<\/td>\n3<\/td>\n174400<\/td>\n229500<\/td>\n289200<\/td>\n330500<\/td>\n422300<\/td>\n486500<\/td>\n550800<\/td>\n<\/tr>\n
M30<\/td>\n3.5<\/td>\n213200<\/td>\n280500<\/td>\n353400<\/td>\n403900<\/td>\n516100<\/td>\n594700<\/td>\n673200<\/td>\n<\/tr>\n
M33<\/td>\n3.5<\/td>\n263700<\/td>\n347000<\/td>\n437200<\/td>\n499700<\/td>\n638500<\/td>\n735600<\/td>\n832800<\/td>\n<\/tr>\n
M36<\/td>\n4<\/td>\n310500<\/td>\n408500<\/td>\n514700<\/td>\n588200<\/td>\n751600<\/td>\n866000<\/td>\n980400<\/td>\n<\/tr>\n
M39<\/td>\n4<\/td>\n370900<\/td>\n488000<\/td>\n614900<\/td>\n702700<\/td>\n897900<\/td>\n1035000<\/td>\n1171000<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

C\u00e1c gi\u00e1 tr\u1ecb n\u00e0y r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 l\u1ef1a ch\u1ecdn \u0111ai \u1ed1c trong c\u00e1c \u1ee9ng d\u1ee5ng m\u00e0 kh\u1ea3 n\u0103ng ch\u1ecbu t\u1ea3i l\u00e0 y\u1ebfu t\u1ed1 t\u1ed1i quan tr\u1ecdng, ch\u1eb3ng h\u1ea1n nh\u01b0 trong c\u00e1c c\u1ea5u ki\u1ec7n k\u1ebft c\u1ea5u ho\u1eb7c m\u00e1y m\u00f3c.<\/p>\n

Y\u00eau c\u1ea7u v\u1ec1 th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc<\/h2>\n

Ti\u00eau chu\u1ea9n n\u00e0y quy \u0111\u1ecbnh gi\u1edbi h\u1ea1n h\u00f3a h\u1ecdc cho \u0111ai \u1ed1c th\u00e9p cacbon \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o x\u1eed l\u00fd nhi\u1ec7t v\u00e0 hi\u1ec7u su\u1ea5t ph\u00f9 h\u1ee3p. Gi\u00e1 tr\u1ecb t\u1ed1i \u0111a cho cacbon (C), ph\u1ed1t pho (P) v\u00e0 l\u01b0u hu\u1ef3nh (S), c\u00f9ng v\u1edbi mangan (Mn) t\u1ed1i thi\u1ec3u, \u0111\u01b0\u1ee3c n\u00eau r\u00f5 b\u00ean d\u01b0\u1edbi. C\u00e1c lo\u1ea1i x\u1eed l\u00fd nhi\u1ec7t bao g\u1ed3m t\u00f4i v\u00e0 ram t\u00f9y ch\u1ecdn cho c\u00e1c lo\u1ea1i th\u00e9p c\u1ea5p th\u1ea5p h\u01a1n v\u00e0 b\u1eaft bu\u1ed9c \u0111\u1ed1i v\u1edbi c\u00e1c lo\u1ea1i th\u00e9p c\u1ea5p cao h\u01a1n.<\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n
C\u1ea5p \u0111\u1ed9 hi\u1ec7u n\u0103ng<\/th>\nV\u1eadt li\u1ec7u<\/th>\nX\u1eed l\u00fd nhi\u1ec7t<\/th>\nC (%) t\u1ed1i \u0111a<\/th>\nMn (%) ph\u00fat<\/th>\nP (%) t\u1ed1i \u0111a<\/th>\nS (%) t\u1ed1i \u0111a<\/th>\n<\/tr>\n<\/thead>\n
4<\/td>\nTh\u00e9p cacbon<\/td>\nKh\u00f4ng b\u1eaft bu\u1ed9c<\/td>\n0.58<\/td>\n0.25<\/td>\n0.060<\/td>\n0.150<\/td>\n<\/tr>\n
5<\/td>\nTh\u00e9p cacbon<\/td>\nT\u00f4i luy\u1ec7n v\u00e0 ram<\/td>\n0.58<\/td>\n0.30<\/td>\n0.048<\/td>\n0.058<\/td>\n<\/tr>\n
5<\/td>\nTh\u00e9p cacbon<\/td>\nKh\u00f4ng b\u1eaft bu\u1ed9c<\/td>\n0.58<\/td>\n–<\/td>\n0.060<\/td>\n0.150<\/td>\n<\/tr>\n
6<\/td>\nTh\u00e9p cacbon<\/td>\nKh\u00f4ng b\u1eaft bu\u1ed9c<\/td>\n0.58<\/td>\n–<\/td>\n0.060<\/td>\n0.150<\/td>\n<\/tr>\n
8<\/td>\nH\u1ea1t cao (Ki\u1ec3u 2)<\/td>\nKh\u00f4ng b\u1eaft bu\u1ed9c<\/td>\n0.58<\/td>\n0.25<\/td>\n0.060<\/td>\n0.150<\/td>\n<\/tr>\n
8<\/td>\n\u0110ai \u1ed1c ti\u00eau chu\u1ea9n (Ki\u1ec3u 1) D \u2264 M16<\/td>\nKh\u00f4ng b\u1eaft bu\u1ed9c<\/td>\n0.58<\/td>\n0.25<\/td>\n0.060<\/td>\n0.150<\/td>\n<\/tr>\n
8<\/td>\n\u0110ai \u1ed1c ti\u00eau chu\u1ea9n (Ki\u1ec3u 1) D > M16<\/td>\nT\u00f4i luy\u1ec7n v\u00e0 ram<\/td>\n0.58<\/td>\n0.30<\/td>\n0.048<\/td>\n0.058<\/td>\n<\/tr>\n
10<\/td>\nTh\u00e9p cacbon<\/td>\nT\u00f4i luy\u1ec7n v\u00e0 ram<\/td>\n0.58<\/td>\n0.30<\/td>\n0.048<\/td>\n0.058<\/td>\n<\/tr>\n
12<\/td>\nTh\u00e9p cacbon<\/td>\nT\u00f4i luy\u1ec7n v\u00e0 ram<\/td>\n0.58<\/td>\n0.45<\/td>\n0.048<\/td>\n0.058<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

L\u01b0u \u00fd: \u0110\u1ed1i v\u1edbi c\u00e1c m\u00e1c th\u00e9p y\u00eau c\u1ea7u t\u00f4i v\u00e0 ram, v\u1eadt li\u1ec7u ph\u1ea3i c\u00f3 kh\u1ea3 n\u0103ng t\u00f4i c\u1ee9ng \u0111\u1ee7 \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c mactenxit x\u1ea5p x\u1ec9 90% trong ph\u1ea7n ren tr\u01b0\u1edbc khi ram. Vi\u1ec7c \u0111\u00e1nh gi\u00e1 th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc c\u1ea7n tu\u00e2n theo c\u00e1c ti\u00eau chu\u1ea9n li\u00ean quan.<\/p>\n

Y\u00eau c\u1ea7u v\u1ec1 \u0111\u1ed9 c\u1ee9ng<\/h2>\n

\u0110\u1ed9 c\u1ee9ng \u0111\u01b0\u1ee3c \u0111o b\u1eb1ng thang Vickers (HV), Brinell (HB) v\u00e0 Rockwell C (HRC), v\u1edbi ph\u1ea1m vi kh\u00e1c nhau t\u00f9y thu\u1ed9c v\u00e0o k\u00edch th\u01b0\u1edbc v\u00e0 c\u1ea5p \u0111\u1ed9 c\u1ee7a \u0111ai \u1ed1c. \u0110i\u1ec1u n\u00e0y \u0111\u1ea3m b\u1ea3o kh\u1ea3 n\u0103ng ch\u1ed1ng bi\u1ebfn d\u1ea1ng c\u1ee7a \u0111ai \u1ed1c d\u01b0\u1edbi t\u1ea3i tr\u1ecdng.<\/p>\n\n\n\n\n\n\n\n\n\n\n\n
K\u00edch th\u01b0\u1edbc s\u1ee3i<\/th>\nL\u1edbp 04<\/th>\nL\u1edbp 05<\/th>\nL\u1edbp 5<\/th>\nL\u1edbp 6<\/th>\nL\u1edbp 8<\/th>\nL\u1edbp 10<\/th>\nL\u1edbp 12<\/th>\n<\/tr>\n
<\/th>\nT\u1ec9 l\u1ec7<\/th>\nT\u1ed1i thi\u1ec3u<\/th>\nT\u1ed1i \u0111a<\/th>\nT\u1ed1i thi\u1ec3u<\/th>\nT\u1ed1i \u0111a<\/th>\nT\u1ed1i thi\u1ec3u<\/th>\nT\u1ed1i \u0111a<\/th>\nT\u1ed1i thi\u1ec3u<\/th>\nT\u1ed1i \u0111a<\/th>\nT\u1ed1i thi\u1ec3u<\/th>\nT\u1ed1i \u0111a<\/th>\nT\u1ed1i thi\u1ec3u<\/th>\nT\u1ed1i \u0111a<\/th>\nT\u1ed1i thi\u1ec3u<\/th>\nT\u1ed1i \u0111a<\/th>\n<\/tr>\n<\/thead>\n
M5 \u2264 D \u2264 M16<\/td>\n\u0110i\u1ec7n \u00e1p cao<\/td>\n188<\/td>\n302<\/td>\n272<\/td>\n353<\/td>\n130<\/td>\n302<\/td>\n150<\/td>\n302<\/td>\n200<\/td>\n302<\/td>\n272<\/td>\n353<\/td>\n295<\/td>\n353<\/td>\n<\/tr>\n
M16 < D \u2264 M39<\/td>\n\u0110i\u1ec7n \u00e1p cao<\/td>\n188<\/td>\n302<\/td>\n272<\/td>\n353<\/td>\n146<\/td>\n302<\/td>\n170<\/td>\n302<\/td>\n233<\/td>\n353<\/td>\n272<\/td>\n353<\/td>\n272<\/td>\n353<\/td>\n<\/tr>\n
M5 \u2264 D \u2264 M16<\/td>\nHB<\/td>\n179<\/td>\n287<\/td>\n259<\/td>\n336<\/td>\n124<\/td>\n287<\/td>\n143<\/td>\n287<\/td>\n190<\/td>\n287<\/td>\n259<\/td>\n336<\/td>\n280<\/td>\n336<\/td>\n<\/tr>\n
M16 < D \u2264 M39<\/td>\nHB<\/td>\n179<\/td>\n287<\/td>\n259<\/td>\n336<\/td>\n139<\/td>\n287<\/td>\n162<\/td>\n287<\/td>\n221<\/td>\n336<\/td>\n259<\/td>\n336<\/td>\n259<\/td>\n336<\/td>\n<\/tr>\n
M5 \u2264 D \u2264 M16<\/td>\nHRC<\/td>\n–<\/td>\n30<\/td>\n26<\/td>\n36<\/td>\n–<\/td>\n30<\/td>\n–<\/td>\n30<\/td>\n–<\/td>\n30<\/td>\n26<\/td>\n36<\/td>\n29<\/td>\n36<\/td>\n<\/tr>\n
M16 < D \u2264 M39<\/td>\nHRC<\/td>\n–<\/td>\n30<\/td>\n26<\/td>\n36<\/td>\n–<\/td>\n30<\/td>\n–<\/td>\n30<\/td>\n–<\/td>\n36<\/td>\n26<\/td>\n36<\/td>\n26<\/td>\n36<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Ch\u00fa th\u00edch: \u0110\u1ed1i v\u1edbi \u0111ai \u1ed1c cao (Ki\u1ec3u 2) c\u1ea5p 8, \u0111\u1ed9 c\u1ee9ng t\u1ed1i thi\u1ec3u l\u00e0 180 HV (171 HB). \u0110\u1ed1i v\u1edbi \u0111ai \u1ed1c cao c\u1ea5p 8, \u0111\u1ed9 c\u1ee9ng t\u1ed1i \u0111a l\u00e0 302 HV (287 HB, 30 HRC). \u0110\u1ed1i v\u1edbi \u0111ai \u1ed1c cao c\u1ea5p 12, \u0111\u1ed9 c\u1ee9ng t\u1ed1i thi\u1ec3u l\u00e0 272 HV (259 HB, 26 HRC).<\/p>\n

T\u01b0\u01a1ng th\u00edch v\u1edbi bu l\u00f4ng, \u1ed1c v\u00edt ho\u1eb7c \u0111inh t\u00e1n<\/h2>\n

\u0110ai \u1ed1c ph\u1ea3i ph\u00f9 h\u1ee3p v\u1edbi c\u1ea5p \u0111\u1ed9 bu l\u00f4ng \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 ch\u1eafc ch\u1eafn c\u1ee7a m\u1ed1i n\u1ed1i. B\u1ea3ng d\u01b0\u1edbi \u0111\u00e2y hi\u1ec3n th\u1ecb c\u00e1c ki\u1ec3u \u0111ai \u1ed1c, \u0111\u01b0\u1eddng k\u00ednh danh ngh\u0129a v\u00e0 c\u1ea5p \u0111\u1ed9 bu l\u00f4ng t\u01b0\u01a1ng th\u00edch.<\/p>\n\n\n\n\n\n\n\n\n
Ki\u1ec3u h\u1ea1t<\/th>\nL\u1edbp 04<\/th>\nL\u1edbp 05<\/th>\nL\u1edbp 5<\/th>\nL\u1edbp 6<\/th>\nL\u1edbp 8<\/th>\nL\u1edbp 10<\/th>\nL\u1edbp 12<\/th>\n<\/tr>\n<\/thead>\n
Ti\u00eau chu\u1ea9n (Ki\u1ec3u 1)<\/td>\n–<\/td>\n–<\/td>\nM5 \u223c D \u2219 M39 \/ M8x1 \u2219 D \u2219 M39x3<\/td>\nM5 \u223c D \u2219 M39 \/ M8x1 \u2219 D \u2219 M39x3<\/td>\nM5 \u223c D \u2219 M39 \/ M8x1 \u2219 D \u2219 M39x3<\/td>\nM5 \u2264 D \u2264 M39 \/ M8x1 \u2264 D \u2264 M16x1.5<\/td>\nM5 \u2264 D \u2264 M16<\/td>\n<\/tr>\n
Cao (Ki\u1ec3u 2)<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\nM16 \u2264 D \u2264 M39 \/ M8x1 \u2264 D \u2264 M16x1.5<\/td>\nM5 \u223c D \u2219 M39 \/ M8x1 \u2219 D \u2219 M39x3<\/td>\nM5 \u2264 D \u2264 M39 \/ M8x1 \u2264 D \u2264 M16x1.5<\/td>\n<\/tr>\n
M\u1ecfng (Ki\u1ec3u 0)<\/td>\nM5 \u223c D \u2219 M39 \/ M8x1 \u2219 D \u2219 M39x3<\/td>\nM5 \u223c D \u2219 M39 \/ M8x1 \u2219 D \u2219 M39x3<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n<\/tr>\n
C\u1ea5p \u0111\u1ed9 bu l\u00f4ng t\u01b0\u01a1ng th\u00edch (T\u1ed1i \u0111a)<\/td>\n–<\/td>\n–<\/td>\n5.8<\/td>\n6.8<\/td>\n8.8<\/td>\n10.9<\/td>\n12.9<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

T\u00ednh t\u01b0\u01a1ng th\u00edch n\u00e0y \u0111\u1ea3m b\u1ea3o r\u1eb1ng \u0111ai \u1ed1c kh\u00f4ng b\u1ecb h\u1ecfng tr\u01b0\u1edbc khi bu l\u00f4ng ch\u1ecbu l\u1ef1c c\u0103ng, duy tr\u00ec \u0111\u1ed9 an to\u00e0n khi l\u1eafp r\u00e1p.<\/p>\n

C\u00e1c y\u1ebfu t\u1ed1 c\u1ea7n xem x\u00e9t v\u1ec1 m\u00f4-men xo\u1eafn<\/h2>\n

Ti\u00eau chu\u1ea9n GB\/T 3098.2-2015 kh\u00f4ng quy \u0111\u1ecbnh m\u00f4-men xo\u1eafn g\u00e2y h\u1ecfng cho \u0111ai \u1ed1c, v\u00ec gi\u00e1 tr\u1ecb m\u00f4-men xo\u1eafn b\u1ecb \u1ea3nh h\u01b0\u1edfng b\u1edfi ma s\u00e1t, b\u00f4i tr\u01a1n v\u00e0 \u0111i\u1ec1u ki\u1ec7n l\u1eafp r\u00e1p. Thay v\u00e0o \u0111\u00f3, h\u00e3y t\u1eadp trung v\u00e0o t\u1ea3i tr\u1ecdng th\u1eed v\u00e0 t\u1ea3i tr\u1ecdng tr\u01b0\u1edbc khi thi\u1ebft k\u1ebf. Tr\u00ean th\u1ef1c t\u1ebf, m\u00f4-men xo\u1eafn t\u00e1c d\u1ee5ng l\u00ean \u0111ai \u1ed1c chuy\u1ec3n \u0111\u1ed5i m\u1ed9t ph\u1ea7n th\u00e0nh l\u1ef1c k\u1eb9p, th\u01b0\u1eddng \u0111\u1ea1t hi\u1ec7u su\u1ea5t kho\u1ea3ng 20% t\u00f9y thu\u1ed9c v\u00e0o c\u00e1c y\u1ebfu t\u1ed1 nh\u01b0 \u0111\u1ed9 nh\u1eb5n b\u1ec1 m\u1eb7t. \u0110\u1ec3 tham kh\u1ea3o, h\u00e3y xem c\u00e1c gi\u00e1 tr\u1ecb m\u00f4-men xo\u1eafn bu l\u00f4ng t\u01b0\u01a1ng \u1ee9ng t\u1eeb c\u00e1c ti\u00eau chu\u1ea9n nh\u01b0 GB\/T 3098.1, nh\u01b0ng lu\u00f4n lu\u00f4n ki\u1ec3m tra l\u1ea1i th\u00f4ng qua th\u1eed nghi\u1ec7m cho c\u00e1c \u1ee9ng d\u1ee5ng c\u1ee5 th\u1ec3.<\/p>\n

C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p (FAQ)<\/h2>\n
\n
1. T\u1ea3i tr\u1ecdng th\u1eed nghi\u1ec7m trong ti\u00eau chu\u1ea9n GB\/T 3098.2-2015 l\u00e0 bao nhi\u00eau?<\/dt>\n
T\u1ea3i tr\u1ecdng th\u1eed nghi\u1ec7m l\u00e0 l\u1ef1c k\u00e9o d\u1ecdc tr\u1ee5c m\u00e0 \u0111ai \u1ed1c ph\u1ea3i ch\u1ecbu \u0111\u01b0\u1ee3c m\u00e0 kh\u00f4ng b\u1ecb bi\u1ebfn d\u1ea1ng v\u0129nh vi\u1ec5n, d\u00f9ng \u0111\u1ec3 \u0111o kh\u1ea3 n\u0103ng ch\u1ecbu t\u1ea3i c\u1ee7a n\u00f3.<\/dd>\n
2. X\u1eed l\u00fd nhi\u1ec7t \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn hi\u1ec7u su\u1ea5t c\u1ee7a \u0111ai \u1ed1c nh\u01b0 th\u1ebf n\u00e0o?<\/dt>\n
T\u00f4i v\u00e0 ram l\u00e0 c\u1ea7n thi\u1ebft \u0111\u1ed1i v\u1edbi c\u00e1c m\u00e1c th\u00e9p cao h\u01a1n (v\u00ed d\u1ee5: 8 \u0111\u1ed1i v\u1edbi D > M16, 10, 12) \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c \u0111\u1ed9 c\u1ee9ng v\u00e0 \u0111\u1ed9 b\u1ec1n c\u1ea7n thi\u1ebft, \u0111\u1ea3m b\u1ea3o c\u1ea5u tr\u00fac mactenxit \u00edt nh\u1ea5t l\u00e0 90% tr\u01b0\u1edbc khi ram.<\/dd>\n
3. C\u00f3 th\u1ec3 s\u1eed d\u1ee5ng \u0111ai \u1ed1c c\u1ea5p 8 v\u1edbi bu l\u00f4ng c\u1ea5p 10.9 kh\u00f4ng?<\/dt>\n
\u0110\u00fang v\u1eady, \u0111ai \u1ed1c c\u1ea5p 8 t\u01b0\u01a1ng th\u00edch v\u1edbi bu l\u00f4ng c\u1ea5p 8.8, nh\u01b0ng \u0111\u1ed1i v\u1edbi bu l\u00f4ng c\u1ea5p 10.9, h\u00e3y s\u1eed d\u1ee5ng \u0111ai \u1ed1c c\u1ea5p 10 \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 b\u1ec1n t\u01b0\u01a1ng \u0111\u01b0\u01a1ng v\u00e0 tr\u00e1nh h\u1ecfng \u0111ai \u1ed1c.<\/dd>\n
4. T\u1ea1i sao gi\u1edbi h\u1ea1n h\u00e0m l\u01b0\u1ee3ng ph\u1ed1t pho v\u00e0 l\u01b0u hu\u1ef3nh l\u1ea1i nghi\u00eam ng\u1eb7t h\u01a1n \u0111\u1ed1i v\u1edbi c\u00e1c lo\u1ea1i h\u1ecdc sinh c\u00f3 h\u1ecdc l\u1ef1c cao h\u01a1n?<\/dt>\n
H\u00e0m l\u01b0\u1ee3ng P v\u00e0 S th\u1ea5p h\u01a1n (v\u00ed d\u1ee5: t\u1ed1i \u0111a 0,048% \u0111\u1ed1i v\u1edbi P \u1edf c\u1ea5p 10) l\u00e0m gi\u1ea3m nguy c\u01a1 gi\u00f2n, c\u1ea3i thi\u1ec7n \u0111\u1ed9 b\u1ec1n v\u00e0 \u0111\u1ed9 tin c\u1eady trong c\u00e1c \u1ee9ng d\u1ee5ng ch\u1ecbu t\u1ea3i cao.<\/dd>\n
5. N\u00ean ki\u1ec3m tra \u0111\u1ed9 c\u1ee9ng c\u1ee7a c\u00e1c lo\u1ea1i h\u1ea1t nh\u01b0 th\u1ebf n\u00e0o?<\/dt>\n
\u0110\u1ed9 c\u1ee9ng th\u01b0\u1eddng \u0111\u01b0\u1ee3c \u0111o tr\u00ean b\u1ec1 m\u1eb7t ch\u1ecbu l\u1ef1c ho\u1eb7c m\u1eb7t c\u1eaft ngang c\u1ee7a \u0111ai \u1ed1c b\u1eb1ng c\u00e1c ph\u01b0\u01a1ng ph\u00e1p HV, HB ho\u1eb7c HRC, v\u1edbi c\u00e1c gi\u00e1 tr\u1ecb thay \u0111\u1ed5i theo k\u00edch th\u01b0\u1edbc (v\u00ed d\u1ee5: gi\u00e1 tr\u1ecb t\u1ed1i thi\u1ec3u cao h\u01a1n \u0111\u1ed1i v\u1edbi \u0111\u01b0\u1eddng k\u00ednh nh\u1ecf h\u01a1n \u1edf m\u1ed9t s\u1ed1 lo\u1ea1i).<\/dd>\n
6. N\u1ebfu \u0111ai \u1ed1c c\u00f3 \u0111\u1ed9 c\u1ee9ng v\u01b0\u1ee3t qu\u00e1 m\u1ee9c t\u1ed1i \u0111a th\u00ec sao?<\/dt>\n
\u0110\u1ed9 c\u1ee9ng qu\u00e1 m\u1ee9c c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn gi\u00f2n; \u0111ai \u1ed1c ph\u1ea3i n\u1eb1m trong ph\u1ea1m vi quy \u0111\u1ecbnh (v\u00ed d\u1ee5: t\u1ed1i \u0111a 353 HV cho c\u1ea5p 10) \u0111\u1ec3 c\u00e2n b\u1eb1ng gi\u1eefa \u0111\u1ed9 b\u1ec1n v\u00e0 \u0111\u1ed9 d\u1ebbo.<\/dd>\n<\/dl>\n<\/div>","protected":false},"excerpt":{"rendered":"

GB\/T 3098.2-2015 specifies the mechanical properties of coarse thread nuts made from carbon steel and alloy steel, applicable for general engineering purposes. This standard aligns closely with international norms such as ISO 898-2, ensuring compatibility in fastener systems. It covers performance grades from 4 to 12, focusing on proof load, chemical composition, hardness, and compatibility […]<\/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-5557","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\/5557","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=5557"}],"version-history":[{"count":1,"href":"https:\/\/korea-transmission.com\/vi\/wp-json\/wp\/v2\/posts\/5557\/revisions"}],"predecessor-version":[{"id":5558,"href":"https:\/\/korea-transmission.com\/vi\/wp-json\/wp\/v2\/posts\/5557\/revisions\/5558"}],"wp:attachment":[{"href":"https:\/\/korea-transmission.com\/vi\/wp-json\/wp\/v2\/media?parent=5557"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/korea-transmission.com\/vi\/wp-json\/wp\/v2\/categories?post=5557"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/korea-transmission.com\/vi\/wp-json\/wp\/v2\/tags?post=5557"}],"curies":[{"name":"trang web","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}