{"id":5714,"date":"2025-12-24T02:27:54","date_gmt":"2025-12-24T02:27:54","guid":{"rendered":"https:\/\/korea-transmission.com\/?p=5714"},"modified":"2025-12-24T02:27:54","modified_gmt":"2025-12-24T02:27:54","slug":"gb-t-3098-3-2016-set-screws-standard-mechanical-properties","status":"publish","type":"post","link":"https:\/\/korea-transmission.com\/vi\/blog\/gb-t-3098-3-2016-set-screws-standard-mechanical-properties\/","title":{"rendered":"Ti\u00eau chu\u1ea9n GB\/T 3098.3-2016 v\u1ec1 v\u00edt \u0111\u1ecbnh v\u1ecb: T\u00ednh ch\u1ea5t c\u01a1 h\u1ecdc"},"content":{"rendered":"

Gi\u1edbi thi\u1ec7u v\u1ec1 Ti\u00eau chu\u1ea9n GB\/T 3098.3-2016<\/h2>\n
\n

B\u00e0i vi\u1ebft n\u00e0y cung c\u1ea5p t\u1ed5ng quan chi ti\u1ebft v\u1ec1 ti\u00eau chu\u1ea9n 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 thu\u1ed9c nh\u00f3m ph\u1ee5 ki\u1ec7n l\u1eafp gh\u00e9p. N\u00f3 bao g\u1ed3m c\u00e1c kh\u00eda c\u1ea1nh thi\u1ebft y\u1ebfu nh\u01b0 th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc v\u00e0 y\u00eau c\u1ea7u v\u1ec1 hi\u1ec7u su\u1ea5t c\u01a1 h\u1ecdc, \u0111\u1ea3m b\u1ea3o tu\u00e2n th\u1ee7 trong s\u1ea3n xu\u1ea5t v\u00e0 \u1ee9ng d\u1ee5ng trong k\u1ef9 thu\u1eadt c\u01a1 kh\u00ed. Hi\u1ec3u r\u00f5 c\u00e1c th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt n\u00e0y r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u v\u00e0 ph\u01b0\u01a1ng ph\u00e1p x\u1eed l\u00fd nhi\u1ec7t ph\u00f9 h\u1ee3p nh\u1eb1m \u0111\u1ea1t \u0111\u01b0\u1ee3c \u0111\u1ed9 b\u1ec1n v\u00e0 \u0111\u1ed9 ch\u1eafc ch\u1eafn mong mu\u1ed1n trong h\u1ec7 th\u1ed1ng l\u1eafp gh\u00e9p.<\/p>\n<\/div>\n

M\u1ee5c l\u1ee5c<\/h2>\n
    \n
  • Th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc<\/li>\n
  • T\u00ednh ch\u1ea5t c\u01a1 h\u1ecdc<\/li>\n
  • C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p (FAQ)<\/li>\n<\/ul>\n
    \n

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

    Th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc c\u1ee7a v\u1eadt li\u1ec7u d\u00f9ng cho v\u00edt \u0111\u1ecbnh v\u1ecb theo ti\u00eau chu\u1ea9n GB\/T 3098.3-2016 r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o c\u00e1c t\u00ednh ch\u1ea5t c\u01a1 h\u1ecdc c\u1ea7n thi\u1ebft sau khi x\u1eed l\u00fd nhi\u1ec7t. Ph\u1ea7n n\u00e0y n\u00eau r\u00f5 gi\u1edbi h\u1ea1n cho ph\u00e9p \u0111\u1ed1i v\u1edbi cacbon, ph\u1ed1t pho, l\u01b0u hu\u1ef3nh v\u00e0 c\u00e1c nguy\u00ean t\u1ed1 kh\u00e1c nhau \u1edf c\u00e1c c\u1ea5p \u0111\u1ed9 c\u1ee9ng kh\u00e1c nhau. Vi\u1ec7c l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u ph\u00f9 h\u1ee3p d\u1ef1a tr\u00ean th\u00e0nh ph\u1ea7n n\u00e0y gi\u00fap ng\u0103n ng\u1eeba c\u00e1c v\u1ea5n \u0111\u1ec1 nh\u01b0 gi\u00f2n ho\u1eb7c kh\u1ea3 n\u0103ng t\u00f4i c\u1ee9ng kh\u00f4ng \u0111\u1ee7. V\u00ed d\u1ee5, h\u00e0m l\u01b0\u1ee3ng cacbon cao h\u01a1n trong c\u00e1c c\u1ea5p \u0111\u1ed9 c\u1ee9ng cao h\u01a1n h\u1ed7 tr\u1ee3 c\u00e1c qu\u00e1 tr\u00ecnh t\u00f4i v\u00e0 ram \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c \u0111\u1ed9 b\u1ec1n v\u01b0\u1ee3t tr\u1ed9i.<\/p>\n\n\n\n\n\n\n\n\n\n\n
    \u0110\u1ed9 c\u1ee9ng<\/th>\n\u0110\u1ed9 c\u1ee9ng Vickers HV t\u1ed1i thi\u1ec3u<\/th>\nV\u1eadt li\u1ec7u<\/th>\nX\u1eed l\u00fd nhi\u1ec7t\u00b9<\/th>\nC%, max\u00b2<\/th>\nC%, min\u00b2<\/th>\nP%, max\u00b2<\/th>\nS%, max\u00b2<\/th>\n<\/tr>\n<\/thead>\n
    14 gi\u1edd<\/td>\n140<\/td>\nTh\u00e9p cacbonc<\/sup><\/td>\n\/<\/td>\n0.5<\/td>\n\/<\/td>\n0.11<\/td>\n0.15<\/td>\n<\/tr>\n
    22 gi\u1edd<\/td>\n220<\/td>\nTh\u00e9p cacbond<\/sup><\/td>\nT\u00f4i luy\u1ec7n v\u00e0 ram<\/td>\n0.5<\/td>\n0.19<\/td>\n0.05<\/td>\n0.05<\/td>\n<\/tr>\n
    33 gi\u1edd<\/td>\n330<\/td>\nTh\u00e9p cacbond<\/sup><\/td>\nT\u00f4i luy\u1ec7n v\u00e0 ram<\/td>\n0.5<\/td>\n0.19<\/td>\n0.05<\/td>\n0.05<\/td>\n<\/tr>\n
    –<\/td>\n45 gi\u1edd<\/td>\n450<\/td>\nTh\u00e9p cacbond,e<\/sup><\/td>\nT\u00f4i luy\u1ec7n v\u00e0 ram<\/td>\n0.5<\/td>\n0.45<\/td>\n0.05<\/td>\n0.05<\/td>\n<\/tr>\n
    –<\/td>\n450<\/td>\nTh\u00e9p cacbon c\u00f3 th\u00eam c\u00e1c nguy\u00ean t\u1ed1d<\/sup> (bo, mangan ho\u1eb7c crom, v.v.)<\/td>\nT\u00f4i luy\u1ec7n v\u00e0 ram<\/td>\n0.5<\/td>\n0.28<\/td>\n0.05<\/td>\n0.05<\/td>\n<\/tr>\n
    –<\/td>\n450<\/td>\nTh\u00e9p h\u1ee3p kimd.f<\/sup><\/td>\nT\u00f4i luy\u1ec7n v\u00e0 ram<\/td>\n0.5<\/td>\n0.3<\/td>\n0.05<\/td>\n0.05<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
    \n
      \n
    • Kh\u00f4ng \u0111\u01b0\u1ee3c ph\u00e9p l\u00e0m c\u1ee9ng b\u1ec1 m\u1eb7t.<\/li>\n
    • Trong tr\u01b0\u1eddng h\u1ee3p c\u00f3 tranh ch\u1ea5p, vi\u1ec7c ph\u00e2n t\u00edch s\u1ea3n ph\u1ea9m s\u1ebd \u0111\u01b0\u1ee3c ti\u1ebfn h\u00e0nh.<\/li>\n
    • C\u00f3 th\u1ec3 s\u1eed d\u1ee5ng th\u00e9p d\u1ec5 c\u1eaft g\u1ecdt, v\u1edbi h\u00e0m l\u01b0\u1ee3ng t\u1ed1i \u0111a c\u00e1c ch\u1ea5t sau: ch\u00ec 0,35%, ph\u1ed1t pho 0,11%, l\u01b0u hu\u1ef3nh 0,34%.<\/li>\n
    • C\u00f3 th\u1ec3 s\u1eed d\u1ee5ng th\u00e9p c\u00f3 h\u00e0m l\u01b0\u1ee3ng ch\u00ec t\u1ed1i \u0111a l\u00e0 0,35%.<\/li>\n
    • Ch\u1ec9 \u00e1p d\u1ee5ng cho d \u2264 M16.<\/li>\n
    • C\u00e1c lo\u1ea1i th\u00e9p h\u1ee3p kim n\u00e0y ph\u1ea3i ch\u1ee9a \u00edt nh\u1ea5t m\u1ed9t trong c\u00e1c nguy\u00ean t\u1ed1 sau v\u1edbi h\u00e0m l\u01b0\u1ee3ng t\u1ed1i thi\u1ec3u: crom 0,30%, niken 0,30%, molypden 0,20%, vanadi 0,10%. Khi c\u00f3 hai, ba ho\u1eb7c b\u1ed1n nguy\u00ean t\u1ed1 h\u1ee3p kim, t\u1ed5ng h\u00e0m l\u01b0\u1ee3ng kh\u00f4ng \u0111\u01b0\u1ee3c nh\u1ecf h\u01a1n 70% so v\u1edbi t\u1ed5ng h\u00e0m l\u01b0\u1ee3ng t\u1ed1i thi\u1ec3u c\u1ee7a t\u1eebng nguy\u00ean t\u1ed1.<\/li>\n<\/ul>\n

      Nh\u1eefng h\u01b0\u1edbng d\u1eabn n\u00e0y \u0111\u1ea3m b\u1ea3o r\u1eb1ng v\u00edt \u0111\u1ecbnh v\u1ecb duy tr\u00ec \u0111\u1ed9 b\u1ec1n d\u01b0\u1edbi t\u1ea3i tr\u1ecdng. C\u00e1c k\u1ef9 s\u01b0 n\u00ean ki\u1ec3m tra th\u00e0nh ph\u1ea7n th\u00f4ng qua c\u00e1c th\u1eed nghi\u1ec7m \u0111\u01b0\u1ee3c ch\u1ee9ng nh\u1eadn \u0111\u1ec3 tu\u00e2n th\u1ee7 c\u00e1c ti\u00eau chu\u1ea9n ng\u00e0nh, \u0111\u1eb7c bi\u1ec7t l\u00e0 trong c\u00e1c \u1ee9ng d\u1ee5ng ch\u1ecbu t\u1ea3i tr\u1ecdng cao nh\u01b0 l\u1eafp r\u00e1p m\u00e1y m\u00f3c.<\/p>\n<\/div>\n

      \n

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

      C\u00e1c \u0111\u1eb7c t\u00ednh c\u01a1 h\u1ecdc \u0111\u01b0\u1ee3c \u0111\u1ecbnh ngh\u0129a trong ti\u00eau chu\u1ea9n GB\/T 3098.3-2016 bao g\u1ed3m c\u00e1c gi\u00e1 tr\u1ecb \u0111\u1ed9 c\u1ee9ng \u0111\u01b0\u1ee3c \u0111o b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p Vickers, Brinell v\u00e0 Rockwell, c\u00f9ng v\u1edbi gi\u1edbi h\u1ea1n kh\u1eed cacbon v\u00e0 \u0111\u1ed9 c\u1ee9ng b\u1ec1 m\u1eb7t. Nh\u1eefng \u0111\u1eb7c t\u00ednh n\u00e0y r\u1ea5t c\u1ea7n thi\u1ebft \u0111\u1ec3 \u0111\u00e1nh gi\u00e1 s\u1ef1 ph\u00f9 h\u1ee3p c\u1ee7a v\u00edt \u0111\u1ecbnh v\u1ecb trong c\u00e1c m\u00f4i tr\u01b0\u1eddng kh\u00e1c nhau, \u0111\u1ea3m b\u1ea3o ch\u00fang c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng bi\u1ebfn d\u1ea1ng v\u00e0 h\u01b0 h\u1ecfng. V\u00ed d\u1ee5, c\u00e1c lo\u1ea1i v\u00edt c\u00f3 \u0111\u1ed9 c\u1ee9ng cao h\u01a1n nh\u01b0 45H r\u1ea5t l\u00fd t\u01b0\u1edfng cho c\u00e1c \u0111i\u1ec1u ki\u1ec7n kh\u1eafc nghi\u1ec7t, nh\u01b0ng c\u1ea7n ki\u1ec3m so\u00e1t c\u1ea9n th\u1eadn qu\u00e1 tr\u00ecnh kh\u1eed cacbon \u0111\u1ec3 duy tr\u00ec \u0111\u1ed9 b\u1ec1n c\u1ee7a ren.<\/p>\n\n\n\n\n\n\n\n\n
      \u0110\u1ed9 c\u1ee9ng<\/th>\n\u0110\u1ed9 c\u1ee9ng Vickers HV10 t\u1ed1i \u0111a<\/th>\n\u0110\u1ed9 c\u1ee9ng Brinell HBW F=30D\u00b2 t\u1ed1i thi\u1ec3u<\/th>\n\u0110\u1ed9 c\u1ee9ng Brinell HBW F=30D\u00b2 t\u1ed1i \u0111a<\/th>\n\u0110\u1ed9 c\u1ee9ng Rockwell HRB t\u1ed1i thi\u1ec3u<\/th>\n\u0110\u1ed9 c\u1ee9ng Rockwell HRB t\u1ed1i \u0111a<\/th>\n\u0110\u1ed9 c\u1ee9ng Rockwell HRC t\u1ed1i thi\u1ec3u<\/th>\n\u0110\u1ed9 c\u1ee9ng Rockwell HRC t\u1ed1i \u0111a<\/th>\nChi\u1ec1u cao l\u1edbp kh\u00f4ng kh\u1eed cacbon c\u1ee7a ren E\/mm t\u1ed1i thi\u1ec3u<\/th>\nChi\u1ec1u cao l\u1edbp kh\u1eed cacbon to\u00e0n ph\u1ea7n c\u1ee7a ren (G\/mm t\u1ed1i \u0111a)<\/th>\n\u0110\u1ed9 c\u1ee9ng b\u1ec1 m\u1eb7t HV0.3 t\u1ed1i \u0111a<\/th>\nKh\u00f4ng th\u1ea5m cacbon HV0.3 t\u1ed1i \u0111a<\/th>\n<\/tr>\n<\/thead>\n
      14 gi\u1edd<\/td>\n290<\/td>\n133<\/td>\n276<\/td>\n75<\/td>\n105<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n<\/tr>\n
      22 gi\u1edd<\/td>\n300<\/td>\n209<\/td>\n285<\/td>\n95<\/td>\nM\u1ed9t<\/td>\nM\u1ed9t<\/td>\n30<\/td>\n1\/2 gi\u1edd1<\/sub><\/td>\n0.015<\/td>\n320<\/td>\nc<\/td>\n<\/tr>\n
      33 gi\u1edd<\/td>\n440<\/td>\n314<\/td>\n418<\/td>\n–<\/td>\n–<\/td>\n33<\/td>\n44<\/td>\n2\/3 gi\u1edd1<\/sub><\/td>\n0.015<\/td>\n450<\/td>\nc<\/td>\n<\/tr>\n
      45 gi\u1edd<\/td>\n560<\/td>\n428<\/td>\n532<\/td>\n–<\/td>\n–<\/td>\n45<\/td>\n53<\/td>\n3\/4 gi\u1edd1<\/sub><\/td>\nb<\/td>\n580<\/td>\nc<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
      \n
        \n
      • \u0110\u1ed1i v\u1edbi th\u00e9p c\u1ea5p 22H, khi th\u1ef1c hi\u1ec7n ph\u00e9p th\u1eed \u0111\u1ed9 c\u1ee9ng Rockwell, h\u00e3y s\u1eed d\u1ee5ng gi\u00e1 tr\u1ecb t\u1ed1i thi\u1ec3u HRB v\u00e0 gi\u00e1 tr\u1ecb t\u1ed1i \u0111a HRC.<\/li>\n
      • \u0110\u1ed1i v\u1edbi 45H, kh\u00f4ng \u0111\u01b0\u1ee3c ph\u00e9p c\u00f3 l\u1edbp kh\u1eed cacbon ho\u00e0n to\u00e0n.<\/li>\n
      • Khi \u0111o \u0111\u1ed9 c\u1ee9ng b\u1ec1 m\u1eb7t v\u00e0 \u0111\u1ed9 c\u1ee9ng l\u00f5i b\u1eb1ng m\u00e1y 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.<\/li>\n<\/ul>\n

        Tu\u00e2n th\u1ee7 c\u00e1c \u0111\u1eb7c t\u00ednh c\u01a1 h\u1ecdc n\u00e0y l\u00e0 r\u1ea5t quan tr\u1ecdng \u0111\u1ed1i v\u1edbi vi\u1ec7c ki\u1ec3m so\u00e1t ch\u1ea5t l\u01b0\u1ee3ng. Vi\u1ec7c ki\u1ec3m tra th\u01b0\u1eddng xuy\u00ean b\u1eb1ng c\u00e1c ph\u01b0\u01a1ng ph\u00e1p ti\u00eau chu\u1ea9n c\u00f3 th\u1ec3 gi\u00fap c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t t\u1ed1i \u01b0u h\u00f3a quy tr\u00ecnh s\u1ea3n xu\u1ea5t, ch\u1eb3ng h\u1ea1n nh\u01b0 chu k\u1ef3 x\u1eed l\u00fd nhi\u1ec7t, \u0111\u1ec3 \u0111\u00e1p \u1ee9ng k\u1ef3 v\u1ecdng v\u1ec1 hi\u1ec7u su\u1ea5t trong c\u00e1c \u1ee9ng d\u1ee5ng th\u1ef1c t\u1ebf.<\/p>\n<\/div>\n

        \n

        C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p (FAQ)<\/h2>\n
        \n
        M\u1ee5c \u0111\u00edch c\u1ee7a ti\u00eau chu\u1ea9n GB\/T 3098.3-2016 l\u00e0 g\u00ec?<\/dt>\n
        Ti\u00eau chu\u1ea9n n\u00e0y 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 ch\u00fang \u0111\u00e1p \u1ee9ng c\u00e1c y\u00eau c\u1ea7u v\u1ec1 \u0111\u1ed9 c\u1ee9ng, th\u00e0nh ph\u1ea7n v\u1eadt li\u1ec7u v\u00e0 \u0111\u1ed9 b\u1ec1n b\u1ec1 m\u1eb7t trong c\u00e1c \u1ee9ng d\u1ee5ng l\u1eafp gh\u00e9p. N\u00f3 h\u01b0\u1edbng d\u1eabn c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t trong vi\u1ec7c t\u1ea1o ra c\u00e1c b\u1ed9 ph\u1eadn \u0111\u00e1ng tin c\u1eady cho c\u00e1c h\u1ec7 th\u1ed1ng c\u01a1 kh\u00ed.<\/dd>\n
        <\/dd>\n
        L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 ch\u1ecdn c\u1ea5p \u0111\u1ed9 c\u1ee9ng ph\u00f9 h\u1ee3p cho v\u00edt \u0111\u1ecbnh v\u1ecb?<\/dt>\n
        H\u00e3y l\u1ef1a ch\u1ecdn d\u1ef1a tr\u00ean y\u00eau c\u1ea7u \u1ee9ng d\u1ee5ng: 14H cho c\u00e1c \u1ee9ng d\u1ee5ng ch\u1ecbu t\u1ea3i th\u1ea5p, 22H ho\u1eb7c 33H cho t\u1ea3i tr\u1ecdng trung b\u00ecnh, v\u00e0 45H cho nhu c\u1ea7u \u0111\u1ed9 b\u1ec1n cao. C\u00e2n nh\u1eafc c\u00e1c y\u1ebfu t\u1ed1 nh\u01b0 kh\u1ea3 n\u0103ng ch\u1ecbu t\u1ea3i v\u00e0 \u0111i\u1ec1u ki\u1ec7n m\u00f4i tr\u01b0\u1eddng \u0111\u1ec3 l\u1ef1a ch\u1ecdn lo\u1ea1i th\u00e9p ph\u00f9 h\u1ee3p v\u1edbi \u0111\u1eb7c t\u00ednh c\u01a1 h\u1ecdc c\u1ee7a th\u00e9p.<\/dd>\n
        <\/dd>\n
        C\u00e1c nguy\u00ean t\u1ed1 h\u1ee3p kim ch\u00ednh n\u00e0o \u0111\u01b0\u1ee3c ph\u00e9p s\u1eed d\u1ee5ng trong th\u00e9p h\u1ee3p kim c\u1ea5p 45H?<\/dt>\n
        Th\u00e9p h\u1ee3p kim ph\u1ea3i ch\u1ee9a \u00edt nh\u1ea5t m\u1ed9t trong c\u00e1c nguy\u00ean t\u1ed1 sau: crom (t\u1ed1i thi\u1ec3u 0,30%), niken (t\u1ed1i thi\u1ec3u 0,30%), molypden (t\u1ed1i thi\u1ec3u 0,20%) ho\u1eb7c vanadi (t\u1ed1i thi\u1ec3u 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.<\/dd>\n
        <\/dd>\n
        Gi\u1edbi h\u1ea1n kh\u1eed cacbon l\u00e0 g\u00ec v\u00e0 t\u1ea1i sao ch\u00fang l\u1ea1i quan tr\u1ecdng?<\/dt>\n
        C\u00e1c gi\u1edbi h\u1ea1n bao g\u1ed3m chi\u1ec1u cao t\u1ed1i thi\u1ec3u c\u1ee7a l\u1edbp kh\u00f4ng b\u1ecb kh\u1eed cacbon (v\u00ed d\u1ee5: 3\/4 H).1<\/sub> (\u0111\u1ed1i v\u1edbi ren 45H) v\u00e0 \u0111\u1ed9 kh\u1eed cacbon t\u1ed1i \u0111a (0,015 mm \u0111\u1ed1i v\u1edbi ren 22H v\u00e0 33H). \u0110i\u1ec1u n\u00e0y ng\u0103n ng\u1eeba s\u1ef1 suy y\u1ebfu c\u1ee7a ren, \u0111\u1ea3m b\u1ea3o kh\u1ea3 n\u0103ng gi\u1eef m\u00f4-men xo\u1eafn v\u00e0 kh\u1ea3 n\u0103ng ch\u1ed1ng m\u1ecfi trong qu\u00e1 tr\u00ecnh s\u1eed d\u1ee5ng.<\/dd>\n
        <\/dd>\n
        Theo ti\u00eau chu\u1ea9n n\u00e0y, th\u00e9p cacbon v\u00e0 th\u00e9p h\u1ee3p kim kh\u00e1c nhau \u1edf \u0111i\u1ec3m n\u00e0o?<\/dt>\n
        Th\u00e9p cacbon d\u1ef1a v\u00e0o h\u00e0m l\u01b0\u1ee3ng cacbon \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c \u0111\u1ed9 c\u1ee9ng mong mu\u1ed1n, trong khi th\u00e9p h\u1ee3p kim k\u1ebft h\u1ee3p c\u00e1c nguy\u00ean t\u1ed1 nh\u01b0 Cr, Ni \u0111\u1ec3 t\u0103ng c\u01b0\u1eddng c\u00e1c \u0111\u1eb7c t\u00ednh. C\u00e1c lo\u1ea1i th\u00e9p h\u1ee3p kim c\u00f3 \u0111\u1ed9 c\u1ee9ng 45H mang l\u1ea1i \u0111\u1ed9 d\u1ebbo dai v\u00e0 kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n t\u1ed1t h\u01a1n cho c\u00e1c m\u00f4i tr\u01b0\u1eddng kh\u1eafc nghi\u1ec7t.<\/dd>\n
        <\/dd>\n
        N\u00ean gi\u1ea3i quy\u1ebft tranh ch\u1ea5p v\u1ec1 th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc nh\u01b0 th\u1ebf n\u00e0o?<\/dt>\n
        Trong tr\u01b0\u1eddng h\u1ee3p c\u00f3 tranh c\u00e3i, h\u00e3y ti\u1ebfn h\u00e0nh ph\u00e2n t\u00edch s\u1ea3n ph\u1ea9m theo h\u01b0\u1edbng d\u1eabn c\u1ee7a ti\u00eau chu\u1ea9n \u0111\u1ec3 x\u00e1c minh s\u1ef1 tu\u00e2n th\u1ee7 c\u00e1c gi\u1edbi h\u1ea1n quy \u0111\u1ecbnh \u0111\u1ed1i v\u1edbi c\u00e1c nguy\u00ean t\u1ed1 nh\u01b0 C, P v\u00e0 S.<\/dd>\n<\/dl>\n<\/div>\n<\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"

        Introduction to GB\/T 3098.3-2016 Standard This article provides a detailed overview of the GB\/T 3098.3-2016 standard, which specifies the mechanical properties of set screws as part of the fasteners series. It covers essential aspects such as chemical composition and mechanical performance requirements, ensuring compliance for manufacturing and application in mechanical engineering. Understanding these specifications is […]<\/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-5714","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\/5714","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=5714"}],"version-history":[{"count":2,"href":"https:\/\/korea-transmission.com\/vi\/wp-json\/wp\/v2\/posts\/5714\/revisions"}],"predecessor-version":[{"id":5716,"href":"https:\/\/korea-transmission.com\/vi\/wp-json\/wp\/v2\/posts\/5714\/revisions\/5716"}],"wp:attachment":[{"href":"https:\/\/korea-transmission.com\/vi\/wp-json\/wp\/v2\/media?parent=5714"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/korea-transmission.com\/vi\/wp-json\/wp\/v2\/categories?post=5714"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/korea-transmission.com\/vi\/wp-json\/wp\/v2\/tags?post=5714"}],"curies":[{"name":"trang web","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}