{"id":5685,"date":"2025-12-24T00:40:41","date_gmt":"2025-12-24T00:40:41","guid":{"rendered":"https:\/\/korea-transmission.com\/?p=5685"},"modified":"2025-12-24T00:40:41","modified_gmt":"2025-12-24T00:40:41","slug":"gb-t-3098-15-2014-stainless-steel-nuts-mechanical-properties","status":"publish","type":"post","link":"https:\/\/korea-transmission.com\/vi\/blog\/gb-t-3098-15-2014-stainless-steel-nuts-mechanical-properties\/","title":{"rendered":"\u0110\u1eb7c t\u00ednh c\u01a1 h\u1ecdc c\u1ee7a \u0111ai \u1ed1c th\u00e9p kh\u00f4ng g\u1ec9 theo ti\u00eau chu\u1ea9n GB\/T 3098.15-2014."},"content":{"rendered":"

Gi\u1edbi thi\u1ec7u v\u1ec1 Ti\u00eau chu\u1ea9n GB\/T 3098.15-2014<\/h2>\n
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Ti\u00eau chu\u1ea9n GB\/T 3098.15-2014 quy \u0111\u1ecbnh c\u00e1c \u0111\u1eb7c t\u00ednh c\u01a1 h\u1ecdc c\u1ee7a \u0111ai \u1ed1c th\u00e9p kh\u00f4ng g\u1ec9 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c lo\u1ea1i \u1ed1c v\u00edt. Ti\u00eau chu\u1ea9n n\u00e0y \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 tin c\u1eady trong nhi\u1ec1u \u1ee9ng d\u1ee5ng c\u00f4ng nghi\u1ec7p kh\u00e1c nhau b\u1eb1ng c\u00e1ch x\u00e1c \u0111\u1ecbnh c\u00e1c y\u00eau c\u1ea7u v\u1ec1 ghi nh\u00e3n, th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc, hi\u1ec7u su\u1ea5t c\u01a1 h\u1ecdc v\u00e0 th\u1eed nghi\u1ec7m. N\u00f3 \u00e1p d\u1ee5ng cho c\u00e1c lo\u1ea1i \u0111ai \u1ed1c \u0111\u01b0\u1ee3c l\u00e0m t\u1eeb th\u00e9p kh\u00f4ng g\u1ec9 austenit, martensit v\u00e0 ferrit, bao g\u1ed3m c\u00e1c c\u1ea5p hi\u1ec7u su\u1ea5t ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c kh\u1ea3 n\u0103ng ch\u1ecbu t\u1ea3i v\u00e0 \u0111i\u1ec1u ki\u1ec7n m\u00f4i tr\u01b0\u1eddng kh\u00e1c nhau. Vi\u1ec7c tu\u00e2n th\u1ee7 ti\u00eau chu\u1ea9n n\u00e0y \u0111\u1ea3m b\u1ea3o r\u1eb1ng c\u00e1c \u0111ai \u1ed1c \u0111\u00e1p \u1ee9ng c\u00e1c ti\u00eau ch\u00ed nghi\u00eam ng\u1eb7t v\u1ec1 \u0111\u1ed9 b\u1ec1n, kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n v\u00e0 \u0111\u1ed9 b\u1ec1n l\u00e2u, do \u0111\u00f3 r\u1ea5t c\u1ea7n thi\u1ebft cho c\u00e1c k\u1ef9 s\u01b0 trong thi\u1ebft k\u1ebf v\u00e0 s\u1ea3n xu\u1ea5t c\u01a1 kh\u00ed.<\/p>\n<\/div>\n

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\u0110\u00e1nh d\u1ea5u, nh\u1eadn d\u1ea1ng v\u00e0 ho\u00e0n thi\u1ec7n b\u1ec1 m\u1eb7t<\/h2>\n

H\u1ec7 th\u1ed1ng k\u00fd hi\u1ec7u cho \u0111ai \u1ed1c th\u00e9p kh\u00f4ng g\u1ec9 bao g\u1ed3m nh\u00f3m th\u00e9p v\u00e0 c\u1ea5p \u0111\u1ed9 b\u1ec1n, \u0111\u01b0\u1ee3c ph\u00e2n t\u00e1ch b\u1eb1ng d\u1ea5u g\u1ea1ch ngang. Ph\u1ea7n \u0111\u1ea7u ti\u00ean ch\u1ec9 nh\u00f3m th\u00e9p (A cho th\u00e9p austenit, C cho th\u00e9p mactenit, F cho th\u00e9p ferrit), ti\u1ebfp theo l\u00e0 m\u1ed9t con s\u1ed1 bi\u1ec3u th\u1ecb ph\u1ea1m vi th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc. Ph\u1ea7n th\u1ee9 hai bi\u1ec3u th\u1ecb c\u1ea5p \u0111\u1ed9 b\u1ec1n, \u0111\u01b0\u1ee3c bi\u1ec3u th\u1ecb b\u1eb1ng 1\/10 c\u1ee7a gi\u1edbi h\u1ea1n ch\u1ea3y (MPa) \u0111\u1ed1i v\u1edbi \u0111ai \u1ed1c c\u00f3 chi\u1ec1u cao m \u2265 0,8D, ho\u1eb7c c\u00f3 s\u1ed1 0 \u0111\u1ee9ng tr\u01b0\u1edbc \u0111\u1ed1i v\u1edbi \u0111ai \u1ed1c m\u1ecfng h\u01a1n (0,5D \u2264 m < 0,8D).<\/p>\n

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  • V\u00ed d\u1ee5: A2-70 \u2013 Th\u00e9p Austenit, gia c\u00f4ng ngu\u1ed9i, gi\u1edbi h\u1ea1n ch\u1ea3y t\u1ed1i thi\u1ec3u 700 MPa (\u0111\u1ed1i v\u1edbi \u0111ai \u1ed1c c\u00f3 m \u2265 0,8D).<\/li>\n
  • V\u00ed d\u1ee5: C4-70 \u2013 Th\u00e9p mactenxit, t\u00f4i v\u00e0 ram, gi\u1edbi h\u1ea1n ch\u1ea3y t\u1ed1i thi\u1ec3u 700 MPa.<\/li>\n
  • V\u00ed d\u1ee5: A2-035 \u2013 Th\u00e9p Austenit, gia c\u00f4ng ngu\u1ed9i, gi\u1edbi h\u1ea1n ch\u1ea3y t\u1ed1i thi\u1ec3u 350 MPa (d\u00e0nh cho \u0111ai \u1ed1c m\u1ecfng h\u01a1n).<\/li>\n<\/ul>\n

    Th\u00e9p austenit cacbon th\u1ea5p (C \u2264 0,03%) c\u00f3 th\u1ec3 th\u00eam k\u00fd hi\u1ec7u \u201cL\u201d (v\u00ed d\u1ee5: A4L-80). B\u1ec1 m\u1eb7t \u0111\u01b0\u1ee3c th\u1ee5 \u0111\u1ed9ng h\u00f3a theo ti\u00eau chu\u1ea9n GB\/T 5267.4 th\u00eam k\u00fd hi\u1ec7u \u201cP\u201d (v\u00ed d\u1ee5: A4-80P). \u0110ai \u1ed1c c\u00f3 \u0111\u01b0\u1eddng k\u00ednh danh ngh\u0129a D \u2265 5 mm ph\u1ea3i \u0111\u01b0\u1ee3c \u0111\u00e1nh d\u1ea5u r\u00f5 r\u00e0ng tr\u00ean m\u1ed9t m\u1eb7t ho\u1eb7c c\u1ea1nh ch\u1ecbu l\u1ef1c. Vi\u1ec7c x\u00e1c \u0111\u1ecbnh nh\u00e0 s\u1ea3n xu\u1ea5t l\u00e0 b\u1eaft bu\u1ed9c n\u1ebfu c\u00f3 th\u1ec3. Bao b\u00ec ph\u1ea3i bao g\u1ed3m d\u1ea5u hi\u1ec7u c\u1ee7a nh\u00e0 s\u1ea3n xu\u1ea5t, nh\u00f3m th\u00e9p, c\u1ea5p hi\u1ec7u su\u1ea5t v\u00e0 s\u1ed1 l\u00f4 theo ti\u00eau chu\u1ea9n GB\/T 90.3. Tr\u1eeb khi c\u00f3 quy \u0111\u1ecbnh kh\u00e1c, \u0111ai \u1ed1c \u0111\u01b0\u1ee3c l\u00e0m s\u1ea1ch v\u00e0 \u0111\u00e1nh b\u00f3ng; vi\u1ec7c th\u1ee5 \u0111\u1ed9ng h\u00f3a \u0111\u01b0\u1ee3c khuy\u1ebfn ngh\u1ecb \u0111\u1ec3 t\u0103ng c\u01b0\u1eddng kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n.<\/p>\n<\/div>\n

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    Th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc<\/h2>\n

    Th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc c\u1ee7a th\u00e9p kh\u00f4ng g\u1ec9 d\u00f9ng cho \u0111ai \u1ed1c \u0111\u01b0\u1ee3c tr\u00ecnh b\u00e0y chi ti\u1ebft trong B\u1ea3ng 1, ph\u00f9 h\u1ee3p v\u1edbi ti\u00eau chu\u1ea9n GB\/T 3098.6-2014. C\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t l\u1ef1a ch\u1ecdn th\u00e0nh ph\u1ea7n trong c\u00e1c nh\u00f3m tr\u1eeb khi c\u00f3 th\u1ecfa thu\u1eadn kh\u00e1c. \u0110\u1ed1i v\u1edbi nguy c\u01a1 \u0103n m\u00f2n gi\u1eefa c\u00e1c h\u1ea1t, c\u1ea7n ki\u1ec3m tra theo ti\u00eau chu\u1ea9n GB\/T 4334; khuy\u1ebfn ngh\u1ecb s\u1eed d\u1ee5ng th\u00e9p A3\/A5 \u1ed5n \u0111\u1ecbnh ho\u1eb7c th\u00e9p A2\/A4 c\u00f3 h\u00e0m l\u01b0\u1ee3ng cacbon th\u1ea5p (C \u2264 0,03%).<\/p>\n

    \n
    \n
    \n
    <\/div>\n<\/div>\n
    \n
    \n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
    Lo\u1ea1i<\/th>\nNh\u00f3m<\/th>\nTh\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc (ph\u1ea7n tr\u0103m kh\u1ed1i l\u01b0\u1ee3ng)\/%<\/th>\nGhi ch\u00fa<\/th>\n<\/tr>\n
    C<\/th>\nSi<\/th>\nMn<\/th>\nP<\/th>\nS<\/th>\nN<\/th>\nCr<\/th>\nMo<\/th>\nNi<\/th>\n\u0110\u1ed3ng<\/th>\nNg\u01b0\u1eddi kh\u00e1c<\/th>\n<\/th>\n<\/tr>\n<\/thead>\n
    Austenit<\/td>\nA1<\/td>\n0.12<\/td>\n1<\/td>\n6.5<\/td>\n0.2<\/td>\n0.15~0.35<\/td>\n\u2014<\/td>\n16~19<\/td>\n0.7<\/td>\n5~10<\/td>\n1.75~2.25<\/td>\n\u2014<\/td>\nb, c, d<\/td>\n<\/tr>\n
    A2<\/td>\n0.1<\/td>\n1<\/td>\n2<\/td>\n0.05<\/td>\n0.03<\/td>\n\u2014<\/td>\n15~20<\/td>\n\u2014 e<\/td>\n8~19<\/td>\n4<\/td>\n\u2014<\/td>\nf,g<\/td>\n<\/tr>\n
    A3<\/td>\n0.08<\/td>\n1<\/td>\n2<\/td>\n0.045<\/td>\n0.03<\/td>\n\u2014<\/td>\n17~19<\/td>\n\u2014 e<\/td>\n9~12<\/td>\n1<\/td>\n\u2014<\/td>\nh<\/td>\n<\/tr>\n
    A4<\/td>\n0.08<\/td>\n1<\/td>\n2<\/td>\n0.045<\/td>\n0.03<\/td>\n\u2014<\/td>\n16~18.5<\/td>\n2~3<\/td>\n10~15<\/td>\n4<\/td>\n\u2014<\/td>\ng,i<\/td>\n<\/tr>\n
    A5<\/td>\n0.08<\/td>\n1<\/td>\n2<\/td>\n0.045<\/td>\n0.03<\/td>\n\u2014<\/td>\n16~18.5<\/td>\n2~3<\/td>\n10.5~14<\/td>\n1<\/td>\n\u2014<\/td>\nCH\u00c0O<\/td>\n<\/tr>\n
    Martensitic<\/td>\nC1<\/td>\n0.09~0.15<\/td>\n1<\/td>\n1<\/td>\n0.05<\/td>\n0.03<\/td>\n\u2014<\/td>\n11.5~14<\/td>\n\u2014<\/td>\n1<\/td>\n\u2014<\/td>\n\u2014<\/td>\nT\u00f4i<\/td>\n<\/tr>\n
    C3<\/td>\n0.17~0.25<\/td>\n1<\/td>\n1<\/td>\n0.04<\/td>\n0.03<\/td>\n\u2014<\/td>\n16~18<\/td>\n\u2014<\/td>\n1.5~2.5<\/td>\n\u2014<\/td>\n\u2014<\/td>\n\u2014<\/td>\n<\/tr>\n
    C4<\/td>\n0.08~0.15<\/td>\n1<\/td>\n1.5<\/td>\n0.06<\/td>\n0.15~0.35<\/td>\n\u2014<\/td>\n12~14<\/td>\n0.6<\/td>\n1<\/td>\n\u2014<\/td>\n\u2014<\/td>\nb,i<\/td>\n<\/tr>\n
    S\u1eaft(III)<\/td>\nF1<\/td>\n0.12<\/td>\n1<\/td>\n1<\/td>\n0.04<\/td>\n0.03<\/td>\n\u2014<\/td>\n15~18<\/td>\n\u2014 j<\/td>\n1<\/td>\n\u2014<\/td>\n\u2014<\/td>\nk,l<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n

    Ghi ch\u00fa: a Gi\u00e1 tr\u1ecb t\u1ed1i \u0111a tr\u1eeb khi c\u00f3 quy \u0111\u1ecbnh kh\u00e1c. b L\u01b0u hu\u1ef3nh c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c thay th\u1ebf b\u1eb1ng selen. c N\u1ebfu Ni 8%, kh\u00f4ng c\u00f3 gi\u1edbi h\u1ea1n Cu t\u1ed1i thi\u1ec3u. e Mo t\u00f9y ch\u1ecdn theo nh\u00e0 s\u1ea3n xu\u1ea5t. f N\u1ebfu Cr < 17%, Ni t\u1ed1i thi\u1ec3u = 12%. g \u0110\u1ed1i v\u1edbi C t\u1ed1i \u0111a = 0,03%, N t\u1ed1i \u0111a = 0,22%. h Ti \u2265 5\u00d7C% \u0111\u1ebfn 0,8%, ho\u1eb7c Nb\/Ta \u2265 10\u00d7C% \u0111\u1ebfn 1,0%. i \u0110\u1ed1i v\u1edbi \u0111\u01b0\u1eddng k\u00ednh l\u1edbn h\u01a1n, C cao h\u01a1n l\u00ean \u0111\u1ebfn 0,12% cho th\u00e9p austenit. j Mo t\u00f9y ch\u1ecdn. k Ti \u2265 5\u00d7C% \u0111\u1ebfn 0,8%. l Nb\/Ta \u2265 10\u00d7C% \u0111\u1ebfn 1,0%.<\/p>\n

    Th\u00e0nh ph\u1ea7n n\u00e0y \u0111\u1ea3m b\u1ea3o kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n v\u00e0 \u0111\u1ed9 b\u1ec1n c\u01a1 h\u1ecdc t\u1ed1i \u01b0u, k\u00e8m theo ph\u1ee5 l\u1ee5c cung c\u1ea5p c\u00e1c v\u00ed d\u1ee5 t\u1eeb ti\u00eau chu\u1ea9n ISO cho c\u00e1c \u1ee9ng d\u1ee5ng chuy\u00ean bi\u1ec7t.<\/p>\n<\/div>\n

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

    C\u00e1c \u0111\u1eb7c t\u00ednh c\u01a1 h\u1ecdc ph\u1ea3i \u0111\u00e1p \u1ee9ng B\u1ea3ng 2 v\u00e0 3 \u0111\u1ec3 \u0111\u01b0\u1ee3c ch\u1ea5p nh\u1eadn, bao g\u1ed3m \u0111\u1ed9 c\u1ee9ng (\u0111\u1ed1i v\u1edbi lo\u1ea1i C1, C3, C4 \u0111\u01b0\u1ee3c t\u00f4i\/rau) v\u00e0 c\u00e1c th\u1eed nghi\u1ec7m t\u1ea3i tr\u1ecdng ch\u1ecbu l\u1ef1c. Kh\u00f4ng ph\u1ea3i t\u1ea5t c\u1ea3 c\u00e1c lo\u1ea1i \u0111\u1ec1u \u00e1p d\u1ee5ng cho t\u1ea5t c\u1ea3 c\u00e1c lo\u1ea1i \u0111ai \u1ed1c; h\u00e3y tham kh\u1ea3o ti\u00eau chu\u1ea9n s\u1ea3n ph\u1ea9m.<\/p>\n

    B\u1ea3ng 2: T\u00ednh ch\u1ea5t c\u01a1 h\u1ecdc \u2013 C\u00e1c nh\u00f3m th\u00e9p Austenit<\/h3>\n
    \n
    \n
    \n
    <\/div>\n<\/div>\n
    \n
    \n\n\n\n\n\n\n\n\n\n
    Lo\u1ea1i<\/th>\nNh\u00f3m<\/th>\nC\u1ea5p \u0111\u1ed9 hi\u1ec7u n\u0103ng<\/th>\n\u1ee8ng su\u1ea5t gi\u1edbi h\u1ea1n SP\/MPa t\u1ed1i thi\u1ec3u<\/th>\n<\/tr>\n
    <\/th>\n<\/tr>\n
    C\u00e1c lo\u1ea1i h\u1ea1t m\u22650,8D<\/th>\nC\u00e1c lo\u1ea1i h\u1ea1t 0,5D\u2264m<0,8D<\/th>\nC\u00e1c lo\u1ea1i h\u1ea1t m\u22650,8D<\/th>\nC\u00e1c lo\u1ea1i h\u1ea1t 0,5D\u2264m<0,8D<\/th>\n<\/tr>\n<\/thead>\n
    Austenit<\/td>\nA1, A2, A3, A4, A5<\/td>\n50<\/td>\n025<\/td>\n500<\/td>\n250<\/td>\n<\/tr>\n
    70<\/td>\n035<\/td>\n700<\/td>\n350<\/td>\n<\/tr>\n
    80<\/td>\n040<\/td>\n800<\/td>\n400<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
    <\/div>\n<\/div>\n<\/div>\n<\/div>\n

    B\u1ea3ng 3: T\u00ednh ch\u1ea5t c\u01a1 h\u1ecdc \u2013 Nh\u00f3m th\u00e9p mactenxit v\u00e0 ferit<\/h3>\n
    \n
    \n
    \n
    <\/div>\n<\/div>\n
    \n
    \n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
    Lo\u1ea1i<\/th>\nNh\u00f3m<\/th>\nC\u1ea5p \u0111\u1ed9 hi\u1ec7u n\u0103ng<\/th>\n\u1ee8ng su\u1ea5t gi\u1edbi h\u1ea1n SP\/MPa t\u1ed1i thi\u1ec3u<\/th>\n\u0110\u1ed9 c\u1ee9ng<\/th>\n<\/tr>\n
    <\/th>\n<\/tr>\n
    C\u00e1c lo\u1ea1i h\u1ea1t m\u22650,8D<\/th>\nC\u00e1c lo\u1ea1i h\u1ea1t 0,5D\u2264m<0,8D<\/th>\nC\u00e1c lo\u1ea1i h\u1ea1t m\u22650,8D<\/th>\nC\u00e1c lo\u1ea1i h\u1ea1t 0,5D\u2264m<0,8D<\/th>\nHB<\/th>\nHRC<\/th>\n\u0110i\u1ec7n \u00e1p cao<\/th>\n<\/tr>\n<\/thead>\n
    Martensitic<\/td>\nC1<\/td>\n50<\/td>\n025<\/td>\n500<\/td>\n250<\/td>\n147~209<\/td>\n\u2014<\/td>\n155~220<\/td>\n<\/tr>\n
    70<\/td>\n\u2014<\/td>\n700<\/td>\n\u2014<\/td>\n209~314<\/td>\n20~34<\/td>\n220~330<\/td>\n<\/tr>\n
    110 a<\/td>\n055 a<\/td>\n1100<\/td>\n550<\/td>\n\u2014<\/td>\n36~45<\/td>\n350~440<\/td>\n<\/tr>\n
    C3<\/td>\n80<\/td>\n040<\/td>\n800<\/td>\n400<\/td>\n228~323<\/td>\n21~35<\/td>\n240~340<\/td>\n<\/tr>\n
    C4<\/td>\n50<\/td>\n\u2014<\/td>\n500<\/td>\n\u2014<\/td>\n147~209<\/td>\n\u2014<\/td>\n155~220<\/td>\n<\/tr>\n
    70<\/td>\n035<\/td>\n700<\/td>\n350<\/td>\n209~314<\/td>\n20~34<\/td>\n220~330<\/td>\n<\/tr>\n
    S\u1eaft(III)<\/td>\nF1 b<\/td>\n45<\/td>\n020<\/td>\n450<\/td>\n200<\/td>\n128~209<\/td>\n\u2014<\/td>\n135~220<\/td>\n<\/tr>\n
    60<\/td>\n030<\/td>\n600<\/td>\n300<\/td>\n171~271<\/td>\n\u2014<\/td>\n180~285<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n

    a T\u00f4i v\u00e0 ram, nhi\u1ec7t \u0111\u1ed9 ram t\u1ed1i thi\u1ec3u 275\u00b0C, D\u226424 mm. b L\u00e0m m\u1ec1m.<\/p>\n

    C\u00e1c \u0111\u1eb7c t\u00ednh n\u00e0y h\u01b0\u1edbng d\u1eabn vi\u1ec7c l\u1ef1a ch\u1ecdn cho c\u00e1c \u1ee9ng d\u1ee5ng y\u00eau c\u1ea7u m\u1ee9c \u0111\u1ed9 b\u1ec1n c\u1ee5 th\u1ec3, c\u00f3 t\u00ednh \u0111\u1ebfn x\u1eed l\u00fd nhi\u1ec7t v\u00e0 k\u00edch th\u01b0\u1edbc \u0111ai \u1ed1c.<\/p>\n<\/div>\n

    \n

    Ph\u01b0\u01a1ng ph\u00e1p th\u1eed nghi\u1ec7m<\/h2>\n

    C\u00e1c th\u1eed nghi\u1ec7m \u0111\u1ed9 c\u1ee9ng \u0111\u1ed1i v\u1edbi th\u00e9p mactenxit v\u00e0 ferit tu\u00e2n theo ti\u00eau chu\u1ea9n GB\/T 231.1 (HB), GB\/T 230.1 (HRC) ho\u1eb7c GB\/T 4340.1 (HV), v\u1edbi thang \u0111o Vickers l\u00e0m chu\u1ea9n. Quy tr\u00ecnh tu\u00e2n theo ti\u00eau chu\u1ea9n GB\/T 3098.2; c\u00e1c gi\u00e1 tr\u1ecb ph\u1ea3i n\u1eb1m trong ph\u1ea1m vi c\u1ee7a B\u1ea3ng 3. Th\u1eed nghi\u1ec7m t\u1ea3i tr\u1ecdng ch\u1ecbu l\u1ef1c theo ti\u00eau chu\u1ea9n GB\/T 3098.2 \u0111\u1ea3m b\u1ea3o kh\u1ea3 n\u0103ng ch\u1ecbu t\u1ea3i m\u00e0 kh\u00f4ng b\u1ecb h\u1ecfng.<\/p>\n

      \n
    1. Ti\u1ebfn h\u00e0nh \u0111o \u0111\u1ed9 c\u1ee9ng tr\u00ean c\u00e1c b\u1ec1 m\u1eb7t \u0111\u00e3 \u0111\u01b0\u1ee3c chu\u1ea9n b\u1ecb.<\/li>\n
    2. T\u0103ng d\u1ea7n t\u1ea3i tr\u1ecdng th\u1eed v\u00e0 gi\u1eef nguy\u00ean \u0111\u1ec3 ki\u1ec3m tra \u0111\u1ed9 b\u1ec1n.<\/li>\n
    3. H\u00e3y s\u1eed d\u1ee5ng thi\u1ebft b\u1ecb \u0111\u00e3 \u0111\u01b0\u1ee3c hi\u1ec7u chu\u1ea9n \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 ch\u00ednh x\u00e1c.<\/li>\n<\/ol>\n

      C\u00e1c ph\u01b0\u01a1ng ph\u00e1p n\u00e0y cung c\u1ea5p kh\u1ea3 n\u0103ng x\u00e1c minh \u0111\u00e1ng tin c\u1eady v\u1ec1 hi\u1ec7u su\u1ea5t c\u1ee7a \u0111ai \u1ed1c trong c\u00e1c c\u1ee5m l\u1eafp r\u00e1p th\u1ef1c t\u1ebf.<\/p>\n<\/div>\n

      \n

      Ph\u1ee5 l\u1ee5c: Th\u00f4ng tin k\u1ef9 thu\u1eadt b\u1ed5 sung<\/h2>\n

      Ph\u1ea7n ph\u1ee5 l\u1ee5c cung c\u1ea5p th\u00f4ng tin chi ti\u1ebft:<\/p>\n

        \n
      • Ph\u1ee5 l\u1ee5c B: Th\u00e0nh ph\u1ea7n th\u00e9p kh\u00f4ng g\u1ec9 theo ti\u00eau chu\u1ea9n ISO 683-13, k\u00e8m theo v\u00ed d\u1ee5 v\u1ec1 c\u00e1c lo\u1ea1i ferit, mactenit v\u00e0 austenit.<\/li>\n
      • Ph\u1ee5 l\u1ee5c D: C\u00e1c v\u1eadt li\u1ec7u l\u00e0m gi\u1ea3m hi\u1ec7n t\u01b0\u1ee3ng n\u1ee9t \u0103n m\u00f2n do \u1ee9ng su\u1ea5t g\u00e2y ra b\u1edfi clorua, v\u00ed d\u1ee5 nh\u01b0 X2CrNiMoN17-13-5 v\u1edbi th\u00e0nh ph\u1ea7n \u0111\u1eb7c bi\u1ec7t d\u00e0nh cho m\u00f4i tr\u01b0\u1eddng c\u00f3 nguy c\u01a1 cao nh\u01b0 b\u1ec3 b\u01a1i.<\/li>\n
      • Ph\u1ee5 l\u1ee5c E: T\u1ef7 l\u1ec7 c\u01b0\u1eddng \u0111\u1ed9 ch\u1ea3y \u1edf nhi\u1ec7t \u0111\u1ed9 cao (v\u00ed d\u1ee5: A2\/A4 \u1edf 400\u00b0C: 70%) v\u00e0 kh\u1ea3 n\u0103ng \u1ee9ng d\u1ee5ng \u1edf nhi\u1ec7t \u0111\u1ed9 th\u1ea5p (A2\/A3 \u0111\u1ebfn -200\u00b0C).<\/li>\n
      • Ph\u1ee5 l\u1ee5c G: \u0110\u1ed9 th\u1ea9m t\u1eeb t\u01b0\u01a1ng \u0111\u1ed1i (v\u00ed d\u1ee5, A2 \u22481,8, kh\u00f4ng c\u00f3 t\u1eeb t\u00ednh \u1edf tr\u1ea1ng th\u00e1i \u1ee7 dung d\u1ecbch nh\u01b0ng c\u00f3 th\u1ec3 tr\u1edf n\u00ean c\u00f3 t\u1eeb t\u00ednh sau khi gia c\u00f4ng ngu\u1ed9i).<\/li>\n<\/ul>\n

        H\u00e3y tham kh\u1ea3o nh\u1eefng t\u00e0i li\u1ec7u n\u00e0y cho c\u00e1c \u1ee9ng d\u1ee5ng chuy\u00ean bi\u1ec7t, \u0111\u1ea3m b\u1ea3o vi\u1ec7c l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u gi\u00fap gi\u1ea3m thi\u1ec3u c\u00e1c r\u1ee7i ro nh\u01b0 \u0103n m\u00f2n ho\u1eb7c nhi\u1ec5u t\u1eeb.<\/p>\n<\/div>\n

        \n

        C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p<\/h2>\n
        \n
        \u0110ai \u1ed1c th\u00e9p kh\u00f4ng g\u1ec9 A2 v\u00e0 A4 kh\u00e1c nhau \u1edf \u0111i\u1ec3m n\u00e0o?<\/dt>\n
        Th\u00e9p A2 l\u00e0 lo\u1ea1i th\u00e9p austenit \u0111a d\u1ee5ng c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n t\u1ed1t, trong khi th\u00e9p A4 c\u00f3 ch\u1ee9a molypden \u0111\u1ec3 t\u0103ng c\u01b0\u1eddng kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n trong m\u00f4i tr\u01b0\u1eddng ch\u1ee9a clorua, theo th\u00e0nh ph\u1ea7n trong B\u1ea3ng 1.<\/dd>\n
        <\/dd>\n
        <\/dd>\n
        L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 ch\u1ecdn lo\u1ea1i \u0111ai \u1ed1c c\u00f3 c\u1ea5p \u0111\u1ed9 b\u1ec1n ph\u00f9 h\u1ee3p?<\/dt>\n
        Ch\u1ecdn d\u1ef1a tr\u00ean y\u00eau c\u1ea7u v\u1ec1 \u1ee9ng su\u1ea5t ch\u1ecbu k\u00e9o v\u00e0 chi\u1ec1u cao \u0111ai \u1ed1c; v\u00ed d\u1ee5: c\u1ea5p 70 cho \u0111ai \u1ed1c c\u00f3 \u0111\u1ed9 d\u00e0y 700 MPa v\u00e0 \u0111\u01b0\u1eddng k\u00ednh m \u2265 0,8D, c\u00f3 x\u00e9t \u0111\u1ebfn t\u1ea3i tr\u1ecdng \u1ee9ng d\u1ee5ng v\u00e0 B\u1ea3ng 2\/3.<\/dd>\n
        <\/dd>\n
        <\/dd>\n
        C\u1ea7n th\u1ef1c hi\u1ec7n nh\u1eefng b\u00e0i ki\u1ec3m tra n\u00e0o \u0111\u1ec3 ch\u1ea5p nh\u1eadn \u0111ai \u1ed1c b\u1eb1ng th\u00e9p kh\u00f4ng g\u1ec9?<\/dt>\n
        \u0110\u1ed9 c\u1ee9ng \u0111\u1ed1i v\u1edbi c\u00e1c nh\u00f3m mactenxit\/ferit v\u00e0 t\u1ea3i tr\u1ecdng th\u1eed nghi\u1ec7m \u0111\u1ed1i v\u1edbi t\u1ea5t c\u1ea3, theo ph\u01b0\u01a1ng ph\u00e1p \u1edf m\u1ee5c 3, \u0111\u1ea3m b\u1ea3o tu\u00e2n th\u1ee7 c\u00e1c t\u00ednh ch\u1ea5t c\u01a1 h\u1ecdc \u0111\u00e3 quy \u0111\u1ecbnh.<\/dd>\n
        <\/dd>\n
        <\/dd>\n
        Lo\u1ea1i \u0111ai \u1ed1c n\u00e0y c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng trong c\u00e1c \u1ee9ng d\u1ee5ng nhi\u1ec7t \u0111\u1ed9 cao kh\u00f4ng?<\/dt>\n
        \u0110\u00fang v\u1eady, nh\u01b0ng h\u00e3y tham kh\u1ea3o Ph\u1ee5 l\u1ee5c E \u0111\u1ec3 bi\u1ebft v\u1ec1 \u0111\u1ed9 b\u1ec1n k\u00e9o gi\u1ea3m \u1edf nhi\u1ec7t \u0111\u1ed9 cao; v\u00ed d\u1ee5, A2 v\u1eabn gi\u1eef \u0111\u01b0\u1ee3c 70% \u1edf 400\u00b0C d\u01b0\u1edbi t\u1ea3i tr\u1ecdng kh\u00f4ng tu\u1ea7n ho\u00e0n.<\/dd>\n
        <\/dd>\n
        <\/dd>\n
        L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 gi\u1ea3m thi\u1ec3u \u0103n m\u00f2n gi\u1eefa c\u00e1c h\u1ea1t trong \u0111ai \u1ed1c austenit?<\/dt>\n
        H\u00e3y s\u1eed d\u1ee5ng c\u00e1c bi\u1ebfn th\u1ec3 c\u00f3 h\u00e0m l\u01b0\u1ee3ng carbon th\u1ea5p (v\u00ed d\u1ee5: A4L) ho\u1eb7c A3\/A5 \u1ed5n \u0111\u1ecbnh, \u0111\u01b0\u1ee3c ki\u1ec3m nghi\u1ec7m theo ti\u00eau chu\u1ea9n GB\/T 4334, nh\u01b0 \u0111\u00e3 khuy\u1ebfn ngh\u1ecb trong ph\u1ea7n th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc.<\/dd>\n
        <\/dd>\n
        <\/dd>\n
        Nh\u1eefng k\u00fd hi\u1ec7u n\u00e0o c\u1ea7n \u0111\u01b0\u1ee3c in tr\u00ean bao b\u00ec?<\/dt>\n
        Bao g\u1ed3m m\u00e3 nh\u1eadn d\u1ea1ng nh\u00e0 s\u1ea3n xu\u1ea5t, nh\u00f3m th\u00e9p\/c\u1ea5p \u0111\u1ed9 hi\u1ec7u su\u1ea5t theo H\u00ecnh 1 v\u00e0 s\u1ed1 l\u00f4 theo GB\/T 90.3 \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o kh\u1ea3 n\u0103ng truy xu\u1ea5t ngu\u1ed3n g\u1ed1c.<\/dd>\n<\/dl>\n<\/div>","protected":false},"excerpt":{"rendered":"

        Introduction to the GB\/T 3098.15-2014 Standard GB\/T 3098.15-2014 specifies the mechanical properties of stainless steel nuts used in fasteners. This standard ensures reliability in various industrial applications by defining requirements for marking, chemical composition, mechanical performance, and testing. It applies to nuts made from austenitic, martensitic, and ferritic stainless steels, covering performance grades suitable for […]<\/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-5685","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\/5685","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=5685"}],"version-history":[{"count":2,"href":"https:\/\/korea-transmission.com\/vi\/wp-json\/wp\/v2\/posts\/5685\/revisions"}],"predecessor-version":[{"id":5687,"href":"https:\/\/korea-transmission.com\/vi\/wp-json\/wp\/v2\/posts\/5685\/revisions\/5687"}],"wp:attachment":[{"href":"https:\/\/korea-transmission.com\/vi\/wp-json\/wp\/v2\/media?parent=5685"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/korea-transmission.com\/vi\/wp-json\/wp\/v2\/categories?post=5685"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/korea-transmission.com\/vi\/wp-json\/wp\/v2\/tags?post=5685"}],"curies":[{"name":"trang web","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}