{"id":5567,"date":"2025-12-19T08:44:19","date_gmt":"2025-12-19T08:44:19","guid":{"rendered":"https:\/\/korea-transmission.com\/?p=5567"},"modified":"2025-12-19T08:44:19","modified_gmt":"2025-12-19T08:44:19","slug":"technical-standards-for-fasteners-in-the-temperature-range-of-200%e2%84%83-to-700%e2%84%83-according-to-gb-t-3098-8","status":"publish","type":"post","link":"https:\/\/korea-transmission.com\/vi\/blog\/technical-standards-for-fasteners-in-the-temperature-range-of-200%e2%84%83-to-700%e2%84%83-according-to-gb-t-3098-8\/","title":{"rendered":"Ti\u00eau chu\u1ea9n k\u1ef9 thu\u1eadt cho c\u00e1c lo\u1ea1i \u1ed1c v\u00edt trong ph\u1ea1m vi nhi\u1ec7t \u0111\u1ed9 t\u1eeb -200\u2103 \u0111\u1ebfn +700\u2103 theo GB\/T 3098.8"},"content":{"rendered":"
\n

<\/h1>\n
\n

Gi\u1edbi thi\u1ec7u<\/h2>\n

Ti\u00eau chu\u1ea9n GB\/T 3098.8 quy \u0111\u1ecbnh c\u00e1c \u0111\u1eb7c t\u00ednh c\u01a1 h\u1ecdc, v\u1eadt li\u1ec7u, th\u1eed nghi\u1ec7m, d\u1ea5u hi\u1ec7u nh\u1eadn d\u1ea1ng v\u00e0 k\u00fd hi\u1ec7u cho c\u00e1c chi ti\u1ebft l\u1eafp gh\u00e9p \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c m\u1ed1i n\u1ed1i bu l\u00f4ng ho\u1ea1t \u0111\u1ed9ng trong ph\u1ea1m vi nhi\u1ec7t \u0111\u1ed9 t\u1eeb -200\u2103 \u0111\u1ebfn +700\u2103. Ti\u00eau chu\u1ea9n n\u00e0y \u00e1p d\u1ee5ng cho bu l\u00f4ng, v\u00edt, \u0111inh t\u00e1n v\u00e0 \u0111ai \u1ed1c \u0111\u01b0\u1ee3c l\u00e0m t\u1eeb th\u00e9p kh\u00f4ng g\u1ec9 Austenit, th\u00e9p v\u00e0 h\u1ee3p kim niken, \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 tin c\u1eady trong m\u00f4i tr\u01b0\u1eddng nhi\u1ec7t \u0111\u1ed9 kh\u1eafc nghi\u1ec7t nh\u01b0 c\u00e1c \u1ee9ng d\u1ee5ng \u0111\u00f4ng l\u1ea1nh v\u00e0 m\u00f4i tr\u01b0\u1eddng c\u00f4ng nghi\u1ec7p nhi\u1ec7t \u0111\u1ed9 cao.<\/p>\n

Ti\u00eau chu\u1ea9n n\u00e0y nh\u1ea5n m\u1ea1nh vi\u1ec7c tu\u00e2n th\u1ee7 c\u00e1c t\u00e0i li\u1ec7u li\u00ean quan nh\u01b0 GB\/T 3098.6, GB\/T 3098.15 v\u00e0 DIN EN 10269 v\u1ec1 hi\u1ec7u su\u1ea5t v\u1eadt li\u1ec7u v\u00e0 \u0111i\u1ec1u ki\u1ec7n x\u1eed l\u00fd nhi\u1ec7t. N\u00f3 cung c\u1ea5p c\u00e1c h\u01b0\u1edbng d\u1eabn v\u1ec1 c\u1ea5p \u0111\u1ed9 hi\u1ec7u su\u1ea5t c\u01a1 h\u1ecdc, ph\u01b0\u01a1ng ph\u00e1p ki\u1ec3m tra v\u00e0 c\u00e1c c\u1eb7p v\u1eadt li\u1ec7u t\u01b0\u01a1ng th\u00edch \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c kh\u1ea3 n\u0103ng ch\u1ecbu t\u1ea3i t\u1ed1i \u0111a trong c\u00e1c c\u1ee5m chi ti\u1ebft l\u1eafp gh\u00e9p.<\/p>\n<\/section>\n

\n

T\u00ednh ch\u1ea5t c\u01a1 h\u1ecdc<\/h2>\n

\u0110\u1ed1i v\u1edbi c\u00e1c lo\u1ea1i \u1ed1c v\u00edt b\u1eb1ng th\u00e9p austenit c\u00f3 kh\u1ea3 n\u0103ng ho\u1ea1t \u0111\u1ed9ng \u1edf nhi\u1ec7t \u0111\u1ed9 t\u1ed1i thi\u1ec3u xu\u1ed1ng \u0111\u1ebfn -200\u2103, B\u1ea3ng 1 n\u00eau r\u00f5 c\u00e1c nh\u00f3m th\u00e9p v\u00e0 c\u1ea5p hi\u1ec7u su\u1ea5t. C\u00e1c \u0111\u1eb7c t\u00ednh v\u1eadt li\u1ec7u ph\u1ea3i ph\u00f9 h\u1ee3p v\u1edbi ti\u00eau chu\u1ea9n GB\/T 3098.6 v\u00e0 GB\/T 3098.15.<\/p>\n\n\n\n\n\n\n\n\n\n\n
Nhi\u1ec7t \u0111\u1ed9 ho\u1ea1t \u0111\u1ed9ng li\u00ean t\u1ee5c t\u1ed1i thi\u1ec3u (x\u1ea5p x\u1ec9)<\/th>\nT\u1eadp \u0111o\u00e0n th\u00e9pM\u1ed9t<\/sup><\/th>\nLo\u1ea1i hi\u1ec7u n\u0103ng cao \u2013 Bu l\u00f4ng<\/th>\nLo\u1ea1i cao c\u1ea5p \u2013 \u0110ai \u1ed1c<\/th>\n<\/tr>\n<\/thead>\n
-60\u2103b<\/sup><\/td>\nA2L<\/td>\n50<\/td>\n50<\/td>\n<\/tr>\n
A2<\/td>\n<\/tr>\n
A3<\/td>\n70<\/td>\n<\/tr>\n
-200\u2103c<\/sup><\/td>\nA4L<\/td>\n70<\/td>\n<\/tr>\n
A4<\/td>\n80<\/td>\n<\/tr>\n
A5<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

L\u01b0u \u00fd: Nhi\u1ec7t \u0111\u1ed9 v\u01b0\u1ee3t qu\u00e1 gi\u1edbi h\u1ea1n n\u00e0y kh\u00f4ng \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn vi\u1ec7c s\u1eed d\u1ee5ng. D\u01b0\u1edbi gi\u1edbi h\u1ea1n n\u00e0y, c\u1ea7n ti\u1ebfn h\u00e0nh c\u00e1c b\u00e0i ki\u1ec3m tra hi\u1ec7u n\u0103ng d\u1ef1a tr\u00ean \u0111i\u1ec1u ki\u1ec7n th\u1ef1c t\u1ebf.
\nM\u1ed9t<\/sup> H\u00e0m l\u01b0\u1ee3ng \u0111\u1ed3ng \u22641% (theo GB\/T 3098.6 v\u00e0 GB\/T 3098.15).
\nb<\/sup> D\u00f9ng cho bu l\u00f4ng c\u00f3 \u0111\u1ea7u.
\nc<\/sup> D\u00f9ng cho \u0111inh t\u00e1n.<\/p>\n

\u0110\u1ed1i v\u1edbi c\u00e1c lo\u1ea1i \u1ed1c v\u00edt b\u1eb1ng th\u00e9p v\u00e0 h\u1ee3p kim niken th\u00edch h\u1ee3p cho nhi\u1ec7t \u0111\u1ed9 cao l\u00ean \u0111\u1ebfn +700\u2103, B\u1ea3ng 2 n\u00eau chi ti\u1ebft nhi\u1ec7t \u0111\u1ed9 ho\u1ea1t \u0111\u1ed9ng \u00e1p d\u1ee5ng theo ti\u00eau chu\u1ea9n DIN EN 10269. C\u00e1c \u0111\u1eb7c t\u00ednh v\u1eadt li\u1ec7u ph\u1ea3i ph\u00f9 h\u1ee3p v\u1edbi B\u1ea3ng 4 c\u1ee7a ti\u00eau chu\u1ea9n DIN EN 10269 v\u1ec1 tr\u1ea1ng th\u00e1i x\u1eed l\u00fd nhi\u1ec7t. D\u1eef li\u1ec7u tham kh\u1ea3o v\u1ec1 \u1ee9ng su\u1ea5t gi\u1edbi h\u1ea1n \u0111\u00e0n h\u1ed3i 0,2% \u1edf nhi\u1ec7t \u0111\u1ed9 cao, \u0111\u1ed9 b\u1ec1n \u0111\u1ee9t do t\u1eeb bi\u1ebfn v\u00e0 c\u00e1c \u0111\u1eb7c t\u00ednh gi\u00e3n n\u1edf \u0111\u01b0\u1ee3c cung c\u1ea5p trong B\u1ea3ng 5, C.1 v\u00e0 D.1 c\u1ee7a ti\u00eau chu\u1ea9n DIN EN 10269.<\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
ph\u00fat<\/th>\nNg\u1eafn h\u1ea1nM\u1ed9t<\/sup> t\u1ed1i \u0111a<\/th>\nD\u00e0i h\u1ea1nb<\/sup> t\u1ed1i \u0111a<\/th>\nVi\u1ebft t\u1eaft<\/th>\nCon s\u1ed1<\/th>\nC\u1ea5p<\/th>\nT\u00ecnh tr\u1ea1ng<\/th>\n\u0110\u1ed9 c\u1ee9ng\/\u0111\u1ed9 c\u1ee9ng c\u1ee7a bu l\u00f4ng v\u00e0\/ho\u1eb7c \u0111ai \u1ed1c (HV)<\/th>\n<\/tr>\n
ph\u00fat<\/th>\nt\u1ed1i \u0111a<\/th>\n<\/tr>\n<\/thead>\n
-120\u2103<\/td>\n\/<\/td>\n\/<\/td>\nKB<\/td>\n1.568<\/td>\nX12Ni5<\/td>\n+NT<\/td>\n157<\/td>\n203<\/td>\n<\/tr>\n
+QT<\/td>\n173<\/td>\n235<\/td>\n<\/tr>\n
\/<\/td>\n400\u2103<\/td>\n500\u2103<\/td>\nYd<\/td>\n1.1181<\/td>\nC35E<\/td>\n+N<\/td>\n150<\/td>\n200<\/td>\n<\/tr>\n
\/<\/td>\n400\u2103<\/td>\n500\u2103<\/td>\nYK<\/td>\n1.1181<\/td>\nC35E<\/td>\n+QT<\/td>\n165<\/td>\n210<\/td>\n<\/tr>\n
\/<\/td>\n400\u2103<\/td>\n\/<\/td>\nYB<\/td>\n1.5511<\/td>\n35B2g<\/sup><\/td>\n+QT<\/td>\n165<\/td>\n210<\/td>\n<\/tr>\n
-60\u2103<\/td>\n500\u2103<\/td>\n550\u2103<\/td>\nKG<\/td>\n1.7218<\/td>\n25CrMo4<\/td>\n+QT<\/td>\n195<\/td>\n240<\/td>\n<\/tr>\n
-100\u2103<\/td>\n500\u2103<\/td>\n\/<\/td>\nGC<\/td>\n1.7225<\/td>\n42CrMo4<\/td>\n+QT<\/td>\n275<\/td>\n337<\/td>\n<\/tr>\n
\/<\/td>\n500\u2103<\/td>\n550\u2103<\/td>\nGA<\/td>\n1.7709<\/td>\n21CrMoV5-7<\/td>\n+QT<\/td>\n225<\/td>\n272<\/td>\n<\/tr>\n
\/<\/td>\n600\u2103<\/td>\n550\u2103<\/td>\nGB<\/td>\n1.7711<\/td>\n40CrMoV46<\/td>\n+QT<\/td>\n272<\/td>\n320<\/td>\n<\/tr>\n
\/<\/td>\n550\u2103<\/td>\n600\u2103<\/td>\nVe<\/td>\n1.4923<\/td>\nX22CrMoV12-1<\/td>\n+QT1e<\/sup><\/td>\n256<\/td>\n303<\/td>\n<\/tr>\n
\/<\/td>\n550\u2103<\/td>\n600\u2103<\/td>\nVHf<\/sup><\/td>\n1.4923<\/td>\nX22CrMoV12-1<\/td>\n+QT2f<\/sup><\/td>\n287<\/td>\n367<\/td>\n<\/tr>\n
\/<\/td>\n600\u2103<\/td>\n600\u2103<\/td>\nVW<\/td>\n1.4913<\/td>\nX19CrMoNbVN11-1<\/td>\n+QT<\/td>\n287<\/td>\n367<\/td>\n<\/tr>\n
\/<\/td>\n650\u2103<\/td>\n670\u2103<\/td>\nS<\/td>\n1.4986<\/td>\nX7CrNiMoBNb16-16<\/td>\n+WW+P<\/td>\n210<\/td>\n272<\/td>\n<\/tr>\n
-196\u2103<\/td>\n650\u2103<\/td>\n650\u2103<\/td>\nSD<\/td>\n1.498<\/td>\nX6NiCrTiMoVB25-15-2<\/td>\n+AT+P<\/td>\n287<\/td>\n367<\/td>\n<\/tr>\n
-196\u2103<\/td>\n650\u2103<\/td>\n800\u2103<\/td>\nSB<\/td>\n2.4952<\/td>\nNiCr20TiAl<\/td>\n+AT+P<\/td>\n320<\/td>\n417<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Ghi ch\u00fa:
\nM\u1ed9t<\/sup> Gi\u1edbi h\u1ea1n nhi\u1ec7t \u0111\u1ed9 t\u1ed1i \u0111a cho \u0111\u1ed9 b\u1ec1n k\u00e9o v\u00e0 \u0111\u1ed9 b\u1ec1n ch\u1ea3y.
\nb<\/sup> Gi\u1edbi h\u1ea1n nhi\u1ec7t \u0111\u1ed9 t\u1ed1i \u0111a cho hi\u1ec7n t\u01b0\u1ee3ng r\u00e3o v\u00e0 \u0111\u1ed9 b\u1ec1n \u0111\u1ee9t.
\n\u0110i\u1ec1u ki\u1ec7n theo b\u1ea3ng 4 c\u1ee7a ti\u00eau chu\u1ea9n DIN EN 10269: +N (chu\u1ea9n h\u00f3a); +NT (chu\u1ea9n h\u00f3a v\u00e0 ram); +QT (t\u00f4i v\u00e0 ram); +WW (gia c\u00f4ng n\u00f3ng); +AT (\u1ee7 dung d\u1ecbch); +P (l\u00e0m c\u1ee9ng b\u1eb1ng k\u1ebft t\u1ee7a).
\nd<\/sup> Ch\u1ec9 d\u00f9ng cho c\u00e1c lo\u1ea1i h\u1ea1t.
\ne<\/sup> K\u00fd hi\u1ec7u vi\u1ebft t\u1eaft V theo ti\u00eau chu\u1ea9n DIN EN 10269, v\u1eadt li\u1ec7u X22CrMoV12-1, \u1ee9ng su\u1ea5t k\u00e9o 0,2% Rp0.2<\/sub> \u2265 600 N\/mm\u00b2 (+QT1).
\nf<\/sup> K\u00fd hi\u1ec7u vi\u1ebft t\u1eaft VH theo ti\u00eau chu\u1ea9n DIN EN 10269, v\u1eadt li\u1ec7u X22CrMoV12-1, \u1ee9ng su\u1ea5t k\u00e9o 0,2% Rp0.2<\/sub> \u2265 600 N\/mm\u00b2 (+QT2).
\ng<\/sup> Xem th\u00eam b\u1ea3ng th\u00f4ng tin v\u1eadt li\u1ec7u VdT\u00dcV WB 490.<\/p>\n<\/section>\n

\n

Kh\u1ea3 n\u0103ng ch\u1ecbu t\u1ea3i c\u1ee7a c\u00e1c m\u1ed1i n\u1ed1i bu l\u00f4ng<\/h2>\n

Y\u00eau c\u1ea7u chung<\/h3>\n

M\u1ed9t c\u1ee5m bu l\u00f4ng-\u0111ai \u1ed1c \u0111\u01b0\u1ee3c coi l\u00e0 c\u00f3 kh\u1ea3 n\u0103ng ch\u1ecbu t\u1ea3i t\u1ed1i \u0111a n\u1ebfu \u0111\u00e1p \u1ee9ng c\u00e1c \u0111i\u1ec1u ki\u1ec7n sau:
\n\u2013 C\u1ea3 bu l\u00f4ng v\u00e0 \u0111ai \u1ed1c \u0111\u1ec1u ch\u1ecbu t\u1ea3i tr\u1ecdng t\u1ed1i \u0111a, v\u1edbi chi\u1ec1u cao \u0111ai \u1ed1c kh\u00f4ng nh\u1ecf h\u01a1n lo\u1ea1i 1 \u0111\u1ed1i v\u1edbi ren th\u00f4 ho\u1eb7c lo\u1ea1i 2 \u0111\u1ed1i v\u1edbi ren m\u1ecbn.
\n\u2013 Dung sai ren ph\u00f9 h\u1ee3p, v\u00ed d\u1ee5: 6H\/6g.
\n\u2013 \u0110\u1ed9 b\u1ec1n k\u00e9o c\u1ee7a v\u1eadt li\u1ec7u \u0111ai \u1ed1c ph\u1ea3i \u0111\u1ea1t \u00edt nh\u1ea5t 70%, t\u01b0\u01a1ng \u0111\u01b0\u01a1ng v\u1edbi \u0111\u1ed9 b\u1ec1n k\u00e9o c\u1ee7a v\u1eadt li\u1ec7u bu l\u00f4ng.
\n\u2013 L\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u ph\u00f9 h\u1ee3p theo B\u1ea3ng 3.
\nL\u01b0u \u00fd: N\u1ebfu s\u1eed d\u1ee5ng \u1ed1ng l\u00f3t ch\u1ecbu l\u1ef1c, n\u00ean ch\u1ecdn v\u1eadt li\u1ec7u gi\u1ed1ng v\u1edbi bu l\u00f4ng.<\/p>\n

L\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u bu l\u00f4ng v\u00e0 \u0111ai \u1ed1c ph\u00f9 h\u1ee3p h\u1ee3p l\u00fd<\/h3>\n\n\n\n\n\n<\/p>\n\n\n\n\n\n
<\/th>\nBu l\u00f4ng<\/th>\nCh\u1ed1ng c\u0103ng th\u1eb3ngM\u1ed9t<\/sup> SP<\/sub> \/ (N\/mm\u00b2)<\/th>\n<\/tr>\n
C\u00e1c lo\u1ea1i th\u00e9p kh\u00f4ng g\u1ec9 Austenit hi\u1ec7u n\u0103ng cao<\/th>\nTh\u00e9p v\u00e0 h\u1ee3p kim niken<\/th>\nLo\u1ea1i ren th\u00f4 1<\/th>\nLo\u1ea1i ren m\u1ecbn s\u1ed1 2<\/th>\n<\/tr>\n
C\u00e1c lo\u1ea1i h\u1ea1t<\/th>\nLo\u1ea1i<\/th>\n50<\/th>\n70<\/th>\nKB<\/th>\nYK<\/th>\nYB<\/th>\nKG<\/th>\nGA<\/th>\nGB<\/th>\nGC<\/th>\nV<\/th>\nVH<\/th>\nVW<\/th>\nS<\/th>\nSD<\/th>\nSB<\/th>\nTh\u00f4<\/th>\nKh\u1ecfe<\/th>\n<\/tr>\n<\/thead>\n
C\u00e1c lo\u1ea1i th\u00e9p kh\u00f4ng g\u1ec9 Austenit hi\u1ec7u n\u0103ng cao<\/td>\n50<\/td>\n\u25cb<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n629b<\/sup><\/td>\n725b<\/sup><\/td>\n<\/tr>\n

<\/p>\n

70<\/td>\n\u25cb<\/td>\n\u25cb<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n800b<\/sup><\/td>\n875b<\/sup><\/td>\n<\/tr>\n
80<\/td>\n\u25cf<\/td>\n\u25cf<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n886b<\/sup><\/td>\n950b<\/sup><\/td>\n<\/tr>\n

<\/p>\n

Bu l\u00f4ng<\/td>\n\u0110\u1ed9 b\u1ec1n k\u00e9o Rm<\/sub> \/ (N\/mm\u00b2)<\/td>\nt\u1ed1i \u0111a<\/td>\n–<\/td>\n–<\/td>\n710<\/td>\n650<\/td>\n650<\/td>\n750<\/td>\n850<\/td>\n1000<\/td>\n1060<\/td>\n950<\/td>\n1050<\/td>\n1050<\/td>\n850<\/td>\n1150<\/td>\n1300<\/td>\n<\/td>\n<\/tr>\n
ph\u00fat<\/td>\n500<\/td>\n700<\/td>\n530<\/td>\n500<\/td>\n500<\/td>\n600<\/td>\n700<\/td>\n850<\/td>\n860<\/td>\n800<\/td>\n900<\/td>\n900<\/td>\n650<\/td>\n900<\/td>\n1000<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

L\u01b0u \u00fd: \u25cf Ph\u00f9 h\u1ee3p \u01b0u ti\u00ean; \u25cb Ph\u00f9 h\u1ee3p \u0111\u01b0\u1ee3c ch\u1ea5p nh\u1eadn; \u2013 Kh\u00f4ng khuy\u1ebfn kh\u00edch.
\nM\u1ed9t<\/sup> \u1ee8ng su\u1ea5t th\u1eed nghi\u1ec7m xem x\u00e9t \u0111\u1ed9 c\u1ee9ng c\u1ee7a tr\u1ee5c th\u1eed cao h\u01a1n \u0111\u1ed9 c\u1ee9ng c\u1ee7a bu l\u00f4ng t\u01b0\u01a1ng \u1ee9ng, nh\u01b0ng l\u1edbn h\u01a1n \u0111\u1ed9 b\u1ec1n k\u00e9o t\u1ed1i thi\u1ec3u c\u1ee7a bu l\u00f4ng c\u1ea5p cao nh\u1ea5t.
\nb<\/sup> \u1ee8ng su\u1ea5t th\u1eed nghi\u1ec7m cao \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh \u0111ai \u1ed1c ch\u1ecbu t\u1ea3i to\u00e0n ph\u1ea7n theo ti\u00eau chu\u1ea9n GB\/T 3098.15.<\/p>\n

T\u1ea3i tr\u1ecdng k\u00e9o t\u1ed1i thi\u1ec3u \u0111\u1ed1i v\u1edbi bu l\u00f4ng ren th\u00f4 (B\u1ea3ng 4a)<\/h3>\n\n\n\n\n<\/p>\n\n
K\u00edch th\u01b0\u1edbc ren d<\/th>\nV\u00f9ng ch\u1ecbu \u00e1p l\u1ef1c As,nom<\/sub> \/ mm\u00b2<\/th>\nC\u00e1c lo\u1ea1i th\u00e9p kh\u00f4ng g\u1ec9 Austenit<\/th>\nTh\u00e9p v\u00e0 h\u1ee3p kim niken<\/th>\n<\/tr>\n
50<\/th>\n70<\/th>\nKB<\/th>\nYK\/YB<\/th>\nKG<\/th>\nGA<\/th>\nGB<\/th>\nGC<\/th>\nV<\/th>\nVH\/VW<\/th>\nS<\/th>\nSD<\/th>\nSB<\/th>\n<\/tr>\n<\/thead>\n
M3<\/td>\n5.03<\/td>\n2.52<\/td>\n3.52<\/td>\n2.67<\/td>\n2.52<\/td>\n3.02<\/td>\n3.52<\/td>\n4.28<\/td>\n4.33<\/td>\n4.02<\/td>\n4.53<\/td>\n3.27<\/td>\n4.53<\/td>\n5.03<\/td>\n<\/tr>\n

<\/tbody>\n<\/table>\n

<\/p>\n

Bu l\u00f4ng ch\u1ecbu t\u1ea3i to\u00e0n ph\u1ea7n<\/h3>\n

Bu l\u00f4ng \u0111\u01b0\u1ee3c coi l\u00e0 ch\u1ecbu t\u1ea3i to\u00e0n ph\u1ea7n n\u1ebfu \u0111\u1ea1t \u0111\u01b0\u1ee3c t\u1ea3i tr\u1ecdng k\u00e9o t\u1ed1i thi\u1ec3u theo B\u1ea3ng 4a ho\u1eb7c 5a, v\u1edbi hi\u1ec7n t\u01b0\u1ee3ng g\u00e3y x\u1ea3y ra \u1edf ph\u1ea7n ren t\u1ef1 do ho\u1eb7c ph\u1ea7n th\u00e2n kh\u00f4ng ren theo ti\u00eau chu\u1ea9n GB\/T 3098.1 ho\u1eb7c GB\/T 3098.6.<\/p>\n<\/section>\n

\n

C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p (FAQ)<\/h2>\n
\n
N\u00ean s\u1eed d\u1ee5ng v\u1eadt li\u1ec7u n\u00e0o cho \u1ed1c v\u00edt \u1edf nhi\u1ec7t \u0111\u1ed9 -200\u2103?<\/dt>\n
Th\u00e9p Austenit nh\u01b0 A4L, A4 v\u00e0 A5 v\u1edbi c\u1ea5p \u0111\u1ed9 b\u1ec1n 70 ho\u1eb7c 80, theo B\u1ea3ng 1, \u0111\u1ea3m b\u1ea3o tu\u00e2n th\u1ee7 ti\u00eau chu\u1ea9n GB\/T 3098.6 v\u00e0 GB\/T 3098.15 cho \u0111i\u1ec1u ki\u1ec7n nhi\u1ec7t \u0111\u1ed9 c\u1ef1c th\u1ea5p.<\/dd>\n
L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u bu l\u00f4ng v\u00e0 \u0111ai \u1ed1c ph\u00f9 h\u1ee3p cho c\u00e1c \u1ee9ng d\u1ee5ng nhi\u1ec7t \u0111\u1ed9 cao?<\/dt>\n
Tham kh\u1ea3o B\u1ea3ng 3 \u0111\u1ec3 bi\u1ebft c\u00e1c c\u1eb7p gh\u00e9p n\u1ed1i h\u1ee3p l\u00fd. C\u00e1c c\u1eb7p gh\u00e9p n\u1ed1i \u01b0u ti\u00ean (\u25cf) \u0111\u1ea3m b\u1ea3o hi\u1ec7u su\u1ea5t t\u1ed1i \u01b0u; \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 b\u1ec1n k\u00e9o c\u1ee7a \u0111ai \u1ed1c \u00edt nh\u1ea5t b\u1eb1ng 70% c\u1ee7a bu l\u00f4ng v\u00e0 dung sai ren ph\u00f9 h\u1ee3p nh\u01b0 6H\/6g.<\/dd>\n
C\u1ea7n th\u1ef1c hi\u1ec7n nh\u1eefng th\u1eed nghi\u1ec7m n\u00e0o \u0111\u1ed1i v\u1edbi c\u00e1c lo\u1ea1i \u1ed1c v\u00edt c\u00f3 nhi\u1ec7t \u0111\u1ed9 ho\u1ea1t \u0111\u1ed9ng d\u01b0\u1edbi m\u1ee9c t\u1ed1i thi\u1ec3u quy \u0111\u1ecbnh?<\/dt>\n
C\u00e1c b\u00e0i ki\u1ec3m tra hi\u1ec7u n\u0103ng d\u1ef1a tr\u00ean \u0111i\u1ec1u ki\u1ec7n s\u1eed d\u1ee5ng c\u1ee5 th\u1ec3, bao g\u1ed3m ki\u1ec3m tra va \u0111\u1eadp v\u00e0 \u0111\u1ed9 b\u1ec1n k\u00e9o, nh\u1eb1m x\u00e1c minh t\u00ednh to\u00e0n v\u1eb9n v\u01b0\u1ee3t qu\u00e1 gi\u1edbi h\u1ea1n ti\u00eau chu\u1ea9n.<\/dd>\n
C\u00f3 y\u00eau c\u1ea7u x\u1eed l\u00fd nhi\u1ec7t c\u1ee5 th\u1ec3 n\u00e0o \u0111\u1ed1i v\u1edbi \u1ed1c v\u00edt h\u1ee3p kim niken kh\u00f4ng?<\/dt>\n
\u0110\u00fang v\u1eady, c\u00e1c \u0111i\u1ec1u ki\u1ec7n nh\u01b0 +AT+P d\u00e0nh cho c\u00e1c lo\u1ea1i nh\u01b0 SB v\u00e0 SD theo b\u1ea3ng 4 c\u1ee7a ti\u00eau chu\u1ea9n DIN EN 10269, v\u1edbi ph\u1ea1m vi \u0111\u1ed9 c\u1ee9ng \u0111\u01b0\u1ee3c quy \u0111\u1ecbnh trong b\u1ea3ng 2.<\/dd>\n
Kh\u1ea3 n\u0103ng ch\u1ecbu t\u1ea3i t\u1ed1i \u0111a c\u1ee7a c\u00e1c c\u1ee5m l\u1eafp r\u00e1p \u0111\u01b0\u1ee3c ki\u1ec3m ch\u1ee9ng nh\u01b0 th\u1ebf n\u00e0o?<\/dt>\n
Th\u00f4ng qua th\u1eed nghi\u1ec7m k\u00e9o \u0111\u1ea1t \u0111\u01b0\u1ee3c t\u1ea3i tr\u1ecdng t\u1ed1i thi\u1ec3u trong B\u1ea3ng 4a\/5a \u0111\u1ed1i v\u1edbi bu l\u00f4ng v\u00e0 t\u1ea3i tr\u1ecdng th\u1eed nghi\u1ec7m trong B\u1ea3ng 4b\/5b \u0111\u1ed1i v\u1edbi \u0111ai \u1ed1c, v\u1edbi vi\u1ec7c ki\u1ec3m tra v\u1ecb tr\u00ed g\u00e3y theo c\u00e1c ti\u00eau chu\u1ea9n GB\/T c\u00f3 li\u00ean quan.<\/dd>\n
\u1ee8ng su\u1ea5t gi\u1edbi h\u1ea1n cao c\u00f3 \u00fd ngh\u0129a g\u00ec \u0111\u1ed1i v\u1edbi \u0111ai \u1ed1c austenit?<\/dt>\n
N\u00f3 cho ph\u00e9p x\u00e1c \u0111\u1ecbnh c\u00e1c lo\u1ea1i \u0111ai \u1ed1c ch\u1ecbu t\u1ea3i to\u00e0n ph\u1ea7n, \u0111\u1eb7c bi\u1ec7t l\u00e0 trong s\u1ea3n xu\u1ea5t theo l\u00f4 nh\u1ecf, b\u00f9 \u0111\u1eafp cho s\u1ef1 kh\u00f4ng \u0111\u1ed3ng nh\u1ea5t v\u1ec1 v\u1eadt li\u1ec7u do gia c\u00f4ng ngu\u1ed9i.<\/dd>\n<\/dl>\n<\/section>\n<\/div>","protected":false},"excerpt":{"rendered":"

Introduction GB\/T 3098.8 specifies the mechanical properties, materials, testing, identification marks, and markings for fasteners used in bolted connections operating within the temperature range of -200\u2103 to +700\u2103. This standard applies to bolts, screws, studs, and nuts made from austenitic stainless steels, steels, and nickel alloys, ensuring reliability in extreme temperature environments such as cryogenic […]<\/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-5567","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\/5567","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=5567"}],"version-history":[{"count":2,"href":"https:\/\/korea-transmission.com\/vi\/wp-json\/wp\/v2\/posts\/5567\/revisions"}],"predecessor-version":[{"id":5570,"href":"https:\/\/korea-transmission.com\/vi\/wp-json\/wp\/v2\/posts\/5567\/revisions\/5570"}],"wp:attachment":[{"href":"https:\/\/korea-transmission.com\/vi\/wp-json\/wp\/v2\/media?parent=5567"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/korea-transmission.com\/vi\/wp-json\/wp\/v2\/categories?post=5567"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/korea-transmission.com\/vi\/wp-json\/wp\/v2\/tags?post=5567"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}