{"id":5867,"date":"2025-12-26T00:47:11","date_gmt":"2025-12-26T00:47:11","guid":{"rendered":"https:\/\/korea-transmission.com\/?p=5867"},"modified":"2025-12-26T00:47:11","modified_gmt":"2025-12-26T00:47:11","slug":"stainless-steel-screw-strength-standards","status":"publish","type":"post","link":"https:\/\/korea-transmission.com\/vi\/blog\/stainless-steel-screw-strength-standards\/","title":{"rendered":"Ti\u00eau chu\u1ea9n \u0111\u1ed9 b\u1ec1n c\u1ee7a v\u00edt th\u00e9p kh\u00f4ng g\u1ec9"},"content":{"rendered":"

Gi\u1edbi thi\u1ec7u v\u1ec1 c\u00e1c ti\u00eau chu\u1ea9n hi\u1ec7u su\u1ea5t c\u1ee7a v\u00edt th\u00e9p kh\u00f4ng g\u1ec9<\/h2>\n

\u1ed0c v\u00edt b\u1eb1ng th\u00e9p kh\u00f4ng g\u1ec9 l\u00e0 lo\u1ea1i \u1ed1c v\u00edt thi\u1ebft y\u1ebfu trong c\u00e1c ng\u00e0nh c\u00f4ng nghi\u1ec7p \u0111\u00f2i h\u1ecfi kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n, ch\u1eb3ng h\u1ea1n nh\u01b0 h\u00e0ng h\u1ea3i, ch\u1ebf bi\u1ebfn h\u00f3a ch\u1ea5t v\u00e0 thi\u1ebft b\u1ecb th\u1ef1c ph\u1ea9m. B\u00e0i vi\u1ebft n\u00e0y tr\u00ecnh b\u00e0y chi ti\u1ebft c\u00e1c ti\u00eau chu\u1ea9n v\u1ec1 hi\u1ec7u su\u1ea5t c\u01a1 h\u1ecdc cho \u1ed1c v\u00edt l\u00e0m t\u1eeb th\u00e9p kh\u00f4ng g\u1ec9 Austenit SUS304 v\u00e0 SUS316, kh\u00f4ng bao g\u1ed3m c\u00e1c k\u00edch th\u01b0\u1edbc \u0111\u01b0\u1ee3c quy \u0111\u1ecbnh trong c\u00e1c ti\u00eau chu\u1ea9n nh\u01b0 ISO 3506 ho\u1eb7c GB\/T 3098.6. C\u00e1c \u0111\u1eb7c t\u00ednh ch\u00ednh bao g\u1ed3m th\u00e0nh ph\u1ea7n v\u1eadt li\u1ec7u, \u0111\u1ed9 b\u1ec1n k\u00e9o (kh\u1ea3 n\u0103ng ch\u1ecbu l\u1ef1c k\u00e9o), m\u00f4 men xo\u1eafn (\u0111\u1ed9 b\u1ec1n xo\u1eafn tr\u01b0\u1edbc khi h\u1ecfng), \u1ee9ng su\u1ea5t ch\u1ea3y (t\u1ea3i tr\u1ecdng kh\u00f4ng g\u00e2y bi\u1ebfn d\u1ea1ng v\u0129nh vi\u1ec5n), gi\u1edbi h\u1ea1n ch\u1ea3y (\u0111i\u1ec3m bi\u1ebfn d\u1ea1ng d\u1ebbo) v\u00e0 c\u00e1c ch\u1ec9 s\u1ed1 li\u00ean quan.<\/p>\n

C\u00e1c ti\u00eau chu\u1ea9n n\u00e0y \u0111\u01b0\u1ee3c r\u00fat ra t\u1eeb c\u00e1c ti\u00eau chu\u1ea9n qu\u1ed1c t\u1ebf nh\u01b0 ISO 3506 v\u00e0 ti\u00eau chu\u1ea9n Trung Qu\u1ed1c GB\/T 3098.6, \u0111\u01b0\u1ee3c \u0111\u01a1n gi\u1ea3n h\u00f3a \u1edf \u0111\u00e2y cho c\u00e1c k\u1ef9 s\u01b0, chuy\u00ean gia mua s\u1eafm v\u00e0 ng\u01b0\u1eddi m\u1edbi. \u0110\u1ec3 bi\u1ebft c\u00e1c quy tr\u00ecnh th\u1eed nghi\u1ec7m ch\u00ednh x\u00e1c, h\u00e3y tham kh\u1ea3o c\u00e1c t\u00e0i li\u1ec7u ch\u00ednh th\u1ee9c nh\u01b0 GB\/T 3098.6-2014. L\u01b0u \u00fd r\u1eb1ng c\u00e1c qu\u00e1 tr\u00ecnh gia c\u00f4ng nh\u01b0 gia c\u00f4ng ngu\u1ed9i gi\u00fap t\u0103ng c\u01b0\u1eddng c\u00e1c \u0111\u1eb7c t\u00ednh v\u01b0\u1ee3t xa gi\u00e1 tr\u1ecb c\u1ee7a nguy\u00ean li\u1ec7u th\u00f4.<\/p>\n

Hi\u1ec7u su\u1ea5t thay \u0111\u1ed5i t\u00f9y thu\u1ed9c v\u00e0o c\u1ea5p \u0111\u1ed9 v\u00e0 k\u00edch th\u01b0\u1edbc; v\u00ed d\u1ee5, c\u00e1c lo\u1ea1i \u1ed1c v\u00edt nh\u1ecf h\u01a1n (M4 tr\u1edf xu\u1ed1ng) c\u00f3 th\u1ec3 kh\u00f4ng \u0111\u1ea1t \u0111\u01b0\u1ee3c c\u1ea5p \u0111\u1ed9 cao h\u01a1n do gi\u1edbi h\u1ea1n s\u1ea3n xu\u1ea5t. Lu\u00f4n lu\u00f4n x\u00e1c nh\u1eadn v\u1edbi nh\u00e0 cung c\u1ea5p \u0111\u1ed1i v\u1edbi c\u00e1c \u1ee9ng d\u1ee5ng t\u00f9y ch\u1ec9nh.<\/p>\n

Th\u00e0nh ph\u1ea7n v\u1eadt li\u1ec7u: SUS304 v\u00e0 SUS316<\/h2>\n

SUS304 v\u00e0 SUS316 l\u00e0 hai lo\u1ea1i th\u00e9p kh\u00f4ng g\u1ec9 austenit ph\u1ed5 bi\u1ebfn nh\u1ea5t \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho \u1ed1c v\u00edt, mang l\u1ea1i kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n tuy\u1ec7t v\u1eddi. SUS304 ph\u00f9 h\u1ee3p v\u1edbi m\u00f4i tr\u01b0\u1eddng th\u00f4ng th\u01b0\u1eddng, trong khi SUS316 cung c\u1ea5p kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n v\u01b0\u1ee3t tr\u1ed9i trong m\u00f4i tr\u01b0\u1eddng gi\u00e0u clorua nh\u1edd b\u1ed5 sung molypden. C\u00e1c bi\u1ebfn th\u1ec3 kh\u00e1c nh\u01b0 304L (h\u00e0m l\u01b0\u1ee3ng cacbon th\u1ea5p) ho\u1eb7c 316L \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 d\u1ec5 h\u00e0n nh\u01b0ng \u00edt ph\u1ed5 bi\u1ebfn h\u01a1n trong c\u00e1c lo\u1ea1i \u1ed1c v\u00edt ti\u00eau chu\u1ea9n.<\/p>\n

Tr\u00e1nh s\u1eed d\u1ee5ng c\u00e1c v\u1eadt li\u1ec7u g\u00e2y hi\u1ec3u nh\u1ea7m nh\u01b0 lo\u1ea1i 201 ho\u1eb7c 668, v\u00ec ch\u00fang thi\u1ebfu kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n c\u1ee7a c\u00e1c lo\u1ea1i th\u00e9p austenit th\u1ef1c s\u1ef1. C\u00e1c lo\u1ea1i th\u00e9p mactenit nh\u01b0 SUS410 kh\u00f4ng \u0111\u01b0\u1ee3c \u0111\u1ec1 c\u1eadp \u1edf \u0111\u00e2y v\u00ec ch\u00fang thu\u1ed9c lo\u1ea1i th\u00e9p kh\u00f4ng g\u1ec9.<\/p>\n

S\u1ef1 kh\u00e1c bi\u1ec7t ch\u00ednh: SUS316 c\u00f3 h\u00e0m l\u01b0\u1ee3ng niken (10-14%), crom (16-18%) cao h\u01a1n v\u00e0 bao g\u1ed3m c\u1ea3 molypden (2-3%), gi\u00fap t\u0103ng c\u01b0\u1eddng kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n r\u1ed7.<\/p>\n

Th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc c\u1ee7a SUS304 (D\u1ef1a tr\u00ean ti\u00eau chu\u1ea9n GB\/T 1220-2007 v\u00e0 c\u00e1c ti\u00eau chu\u1ea9n t\u01b0\u01a1ng \u0111\u01b0\u01a1ng)<\/p>\n

Nguy\u00ean t\u1ed1: Cacbon (C) Mangan (Mn) Silic (Si) Ph\u1ed1t pho (P) L\u01b0u hu\u1ef3nh (S) Niken (Ni) Crom (Cr) \u0110\u1ed3ng (Cu) Molypden (Mo) Ph\u1ea1m vi ti\u00eau chu\u1ea9n (%) \u22640,08 \u22642,00 \u22641,00 \u22640,04 5 \u22640,03 0 8,00-11,00 18,00-20,00 \u22641,00-<\/p>\n

C\u00e1c \u0111\u1eb7c t\u00ednh c\u01a1 h\u1ecdc \u0111i\u1ec3n h\u00ecnh c\u1ee7a v\u00edt SUS304 \u0111\u00e3 qua x\u1eed l\u00fd: \u0110\u1ed9 b\u1ec1n k\u00e9o t\u1ed1i thi\u1ec3u 515 MPa, \u0111\u1ed9 gi\u00e3n d\u00e0i 40%, \u0111\u1ed9 c\u1ee9ng l\u00ean \u0111\u1ebfn HRB 92.<\/p>\n

\n\n\n\n\n\n
Th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc c\u1ee7a SUS316 (D\u1ef1a tr\u00ean ti\u00eau chu\u1ea9n JIS G4303 v\u00e0 c\u00e1c ti\u00eau chu\u1ea9n t\u01b0\u01a1ng \u0111\u01b0\u01a1ng)<\/caption>\n
Y\u1ebfu t\u1ed1<\/th>\nCacbon (C)<\/th>\nMangan (Mn)<\/th>\nSilicon (Si)<\/th>\nPh\u1ed1t pho (P)<\/th>\nL\u01b0u hu\u1ef3nh (S)<\/th>\nNiken (Ni)<\/th>\nCrom (Cr)<\/th>\nMolypden (Mo)<\/th>\n\u0110\u1ed3ng (Cu)<\/th>\n<\/tr>\n<\/thead>\n
D\u00f2ng s\u1ea3n ph\u1ea9m ti\u00eau chu\u1ea9n (%)<\/td>\n\u22640,08<\/td>\n\u22642,00<\/td>\n\u22641,00<\/td>\n\u22640,045<\/td>\n\u22640,030<\/td>\n10.00-14.00<\/td>\n16.00-18.00<\/td>\n2.00-3.00<\/td>\n–<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

C\u00e1c \u0111\u1eb7c t\u00ednh c\u01a1 h\u1ecdc \u0111i\u1ec3n h\u00ecnh c\u1ee7a v\u00edt SUS316 \u0111\u00e3 qua x\u1eed l\u00fd: \u0110\u1ed9 b\u1ec1n k\u00e9o t\u1ed1i thi\u1ec3u 515 MPa, \u0111\u1ed9 b\u1ec1n ch\u1ea3y 205 MPa, \u0111\u1ed9 gi\u00e3n d\u00e0i 40%.<\/p>\n

\u0110i\u1ec3m v\u00e0 x\u1ebfp lo\u1ea1i th\u00e0nh t\u00edch<\/h2>\n

\u1ed0c v\u00edt b\u1eb1ng th\u00e9p kh\u00f4ng g\u1ec9 \u0111\u01b0\u1ee3c \u0111\u00e1nh d\u1ea5u b\u1eb1ng c\u00e1c c\u1ea5p \u0111\u1ed9 nh\u01b0 A2-50, A2-70, A4-70, A4-80 tr\u00ean \u0111\u1ea7u v\u00edt, cho bi\u1ebft v\u1eadt li\u1ec7u v\u00e0 c\u1ea5p \u0111\u1ed9 b\u1ec1n theo ti\u00eau chu\u1ea9n ISO 3506.<\/p>\n

    \n
  • A2 k\u00fd hi\u1ec7u v\u1eadt li\u1ec7u SUS304.<\/li>\n
  • A4 bi\u1ec3u th\u1ecb v\u1eadt li\u1ec7u SUS316.<\/li>\n
  • Con s\u1ed1 (v\u00ed d\u1ee5: 70) bi\u1ec3u th\u1ecb \u0111\u1ed9 b\u1ec1n k\u00e9o t\u1ed1i thi\u1ec3u theo b\u1ed9i s\u1ed1 c\u1ee7a 10 MPa (v\u00ed d\u1ee5: 700 MPa \u0111\u1ed1i v\u1edbi 70).<\/li>\n<\/ul>\n

    Kh\u00f4ng ph\u1ea3i t\u1ea5t c\u1ea3 c\u00e1c k\u00edch th\u01b0\u1edbc \u0111\u1ec1u \u0111\u1ea1t \u0111\u01b0\u1ee3c c\u1ea5p \u0111\u1ed9 b\u1ec1n t\u1ed1i \u0111a; v\u00ed d\u1ee5, bu l\u00f4ng l\u1ee5c gi\u00e1c SUS316 th\u01b0\u1eddng \u0111\u1ea1t c\u1ea5p \u0111\u1ed9 A4-70, trong khi \u0111ai \u1ed1c c\u00f3 th\u1ec3 \u0111\u1ea1t \u0111\u1ebfn A4-80. H\u01b0\u1edbng d\u1eabn \u00e1p d\u1ee5ng trong ng\u00e0nh:<\/p>\n

    <\/div>\n

    V\u1eadt li\u1ec7uC\u1ea5p \u0111\u1ed9K\u00edch th\u01b0\u1edbc v\u00e0 lo\u1ea1i \u00e1p d\u1ee5ngSUS304A2-50V\u00edt m\u00e1y, bu l\u00f4ng M5 tr\u1edf xu\u1ed1ngA2-70Bu l\u00f4ng v\u00e0 \u0111ai \u1ed1c l\u00ean \u0111\u1ebfn M24SUS316A4-70Bu l\u00f4ng l\u00ean \u0111\u1ebfn M24A4-80Bu l\u00f4ng v\u00e0 \u0111ai \u1ed1c l\u00ean \u0111\u1ebfn M24<\/p>\n

    \u0110\u1ed1i v\u1edbi \u0111\u01b0\u1eddng k\u00ednh l\u1edbn h\u01a1n M24, vui l\u00f2ng tham kh\u1ea3o th\u1ecfa thu\u1eadn v\u1edbi nh\u00e0 cung c\u1ea5p v\u00ec c\u00e1c ti\u00eau chu\u1ea9n c\u00f3 th\u1ec3 kh\u00f4ng quy \u0111\u1ecbnh c\u1ee5 th\u1ec3.<\/p>\n

    T\u00ednh ch\u1ea5t c\u01a1 h\u1ecdc: \u0110\u1ed9 b\u1ec1n k\u00e9o, gi\u1edbi h\u1ea1n ch\u1ea3y, \u1ee9ng su\u1ea5t ch\u1ea3y v\u00e0 \u0111\u1ed9 gi\u00e3n d\u00e0i.<\/h2>\n

    C\u00e1c \u0111\u1eb7c t\u00ednh n\u00e0y x\u00e1c \u0111\u1ecbnh hi\u1ec7u su\u1ea5t c\u1ee7a v\u00edt d\u01b0\u1edbi t\u1ea3i tr\u1ecdng. \u0110\u1ed9 b\u1ec1n k\u00e9o l\u00e0 \u1ee9ng su\u1ea5t t\u1ed1i \u0111a tr\u01b0\u1edbc khi g\u00e3y; gi\u1edbi h\u1ea1n ch\u1ea3y l\u00e0 \u1ee9ng su\u1ea5t t\u1ea1i 0,2% bi\u1ebfn d\u1ea1ng d\u1ebbo; \u1ee9ng su\u1ea5t gi\u1edbi h\u1ea1n \u0111\u00e0n h\u1ed3i t\u01b0\u01a1ng t\u1ef1 nh\u01b0ng \u0111\u1ed1i v\u1edbi \u0111\u1ed9 gi\u00e3n kh\u00f4ng t\u1ef7 l\u1ec7 thu\u1eadn; \u0111\u1ed9 gi\u00e3n d\u00e0i \u0111o \u0111\u1ed9 d\u1ebbo.<\/p>\n

    Theo ti\u00eau chu\u1ea9n GB\/T 3098.6, gi\u00e1 tr\u1ecb t\u1ed1i thi\u1ec3u:<\/p>\n

      \n
    • A2-50: \u0110\u1ed9 b\u1ec1n k\u00e9o 500 MPa, \u0110\u1ed9 b\u1ec1n n\u00e9n 210 MPa, \u0110\u1ed9 gi\u00e3n d\u00e0i 0,6d (d = \u0111\u01b0\u1eddng k\u00ednh).<\/li>\n
    • A2-70: \u0110\u1ed9 b\u1ec1n k\u00e9o 700 MPa, \u0110\u1ed9 b\u1ec1n n\u00e9n 450 MPa, \u0110\u1ed9 gi\u00e3n d\u00e0i 0,4d.<\/li>\n
    • A4-70: \u0110\u1ed9 b\u1ec1n k\u00e9o 700 MPa, \u0110\u1ed9 b\u1ec1n ch\u1ea3y 450 MPa, \u0110\u1ed9 gi\u00e3n d\u00e0i 0,4d.<\/li>\n
    • A4-80: \u0110\u1ed9 b\u1ec1n k\u00e9o 800 MPa, \u0110\u1ed9 b\u1ec1n ch\u1ea3y 600 MPa, \u0110\u1ed9 gi\u00e3n d\u00e0i 0,3d.<\/li>\n<\/ul>\n

      Gia c\u00f4ng ngu\u1ed9i l\u00e0m t\u0103ng c\u00e1c th\u00f4ng s\u1ed1 n\u00e0y t\u1eeb m\u1ee9c c\u1ee7a nguy\u00ean li\u1ec7u th\u00f4 (v\u00ed d\u1ee5, th\u00e9p 304 th\u00f4 c\u00f3 \u0111\u1ed9 b\u1ec1n k\u00e9o kho\u1ea3ng 500 MPa l\u00ean 700 MPa trong \u1ed1c v\u00edt).<\/p>\n

      Ti\u00eau chu\u1ea9n m\u00f4-men xo\u1eafn v\u00e0 ti\u00eau ch\u00ed h\u1ecfng h\u00f3c<\/h2>\n

      M\u00f4-men xo\u1eafn (m\u00f4-men xo\u1eafn ph\u00e1 v\u1ee1) r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 l\u1eafp \u0111\u1eb7t m\u00e0 kh\u00f4ng b\u1ecb h\u1ecfng. Ti\u00eau chu\u1ea9n GB\/T 3098.6 cung c\u1ea5p c\u00e1c gi\u00e1 tr\u1ecb m\u00f4-men xo\u1eafn ph\u00e1 v\u1ee1 t\u1ed1i thi\u1ec3u cho c\u00e1c k\u00edch th\u01b0\u1edbc v\u00e0 c\u1ea5p \u0111\u1ed9 kh\u00e1c nhau.<\/p>\n

      V\u00ed d\u1ee5: \u0110\u1ed1i v\u1edbi v\u00edt l\u1ee5c gi\u00e1c M6 A2-70, m\u00f4-men xo\u1eafn ph\u00e1 v\u1ee1 t\u1ed1i thi\u1ec3u x\u1ea5p x\u1ec9 13 N\u00b7m. Tham kh\u1ea3o c\u00e1c b\u1ea3ng chi ti\u1ebft \u0111\u1ec3 c\u00f3 gi\u00e1 tr\u1ecb ch\u00ednh x\u00e1c, v\u00ec ch\u00fang thay \u0111\u1ed5i t\u00f9y thu\u1ed9c v\u00e0o lo\u1ea1i ren v\u00e0 chi\u1ec1u d\u00e0i.<\/p>\n

      C\u00e1ch th\u1ef1c hi\u1ec7n: X\u00e1c \u0111\u1ecbnh c\u1ea5p \u0111\u1ed9 bu l\u00f4ng, sau \u0111\u00f3 tham kh\u1ea3o b\u1ea3ng m\u00f4-men xo\u1eafn. \u200b\u200bSi\u1ebft qu\u00e1 ch\u1eb7t c\u00f3 nguy c\u01a1 l\u00e0m h\u1ecfng ren ho\u1eb7c g\u00e3y ren.<\/p>\n

      T\u00ednh to\u00e1n di\u1ec7n t\u00edch m\u1eb7t c\u1eaft ngang \u1ee9ng su\u1ea5t hi\u1ec7u d\u1ee5ng<\/h2>\n

      Di\u1ec7n t\u00edch ch\u1ecbu \u1ee9ng su\u1ea5t (As) \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 t\u00ednh to\u00e1n t\u1ea3i tr\u1ecdng th\u1ef1c t\u1ebf: As = \u03c0\/4 * (d \u2013 0,9382*p)^2, trong \u0111\u00f3 d l\u00e0 \u0111\u01b0\u1eddng k\u00ednh danh ngh\u0129a, p l\u00e0 b\u01b0\u1edbc ren (gi\u00e1 tr\u1ecb x\u1ea5p x\u1ec9 cho ren h\u1ec7 m\u00e9t).<\/p>\n

      C\u00e1c gi\u00e1 tr\u1ecb th\u00f4ng th\u01b0\u1eddng (t\u00ednh b\u1eb1ng mm\u00b2):<\/p>\n

      <\/div>\n

      \u0110\u01b0\u1eddng k\u00ednh danh ngh\u0129aM3M4M5M6M8M10M12M16M20Di\u1ec7n t\u00edch ch\u1ecbu l\u1ef1c (mm\u00b2)5.038.7814.220.136.658.084.3157245<\/p>\n

      S\u1eed d\u1ee5ng As \u0111\u1ec3 t\u00ednh t\u1ea3i tr\u1ecdng k\u00e9o: T\u1ea3i tr\u1ecdng = \u0110\u1ed9 b\u1ec1n k\u00e9o * As (\u0111\u01a1n v\u1ecb N).<\/p>\n

      Th\u00f4ng s\u1ed1 hi\u1ec7u n\u0103ng chi ti\u1ebft cho c\u00e1c k\u00edch th\u01b0\u1edbc th\u00f4ng d\u1ee5ng<\/h2>\n

      C\u00e1c th\u00f4ng s\u1ed1 \u0111\u01b0\u1ee3c t\u00ednh to\u00e1n cho kh\u1ed5 gi\u1ea5y A2-70 (v\u00ed d\u1ee5 v\u1ec1 c\u00e1c k\u00edch th\u01b0\u1edbc):<\/p>\n

      <\/div>\n

      K\u00edch th\u01b0\u1edbcDi\u1ec7n t\u00edch ch\u1ecbu l\u1ef1c (mm\u00b2)T\u1ea3i tr\u1ecdng k\u00e9o t\u1ed1i thi\u1ec3u (kN)T\u1ea3i tr\u1ecdng gi\u1edbi h\u1ea1n \u0111\u00e0n h\u1ed3i t\u1ed1i thi\u1ec3u (kN)M620.114.19.0M836.625.616.5M1058.040.626.1<\/p>\n

      T\u01b0\u01a1ng t\u1ef1 \u0111\u1ed1i v\u1edbi A4-80: T\u1ea3i tr\u1ecdng cao h\u01a1n do \u0111\u1ed9 b\u1ec1n k\u00e9o 800 MPa.<\/p>\n

      \u0110\u1ed1i v\u1edbi kh\u1ed5 gi\u1ea5y A4-70 v\u00e0 A4-80, h\u00e3y \u0111i\u1ec1u ch\u1ec9nh d\u1ef1a tr\u00ean h\u1ec7 s\u1ed1 nh\u00e2n \u0111\u1ed9 d\u00e0y.<\/p>\n

      \u1ee8ng d\u1ee5ng v\u00e0 h\u01b0\u1edbng d\u1eabn ng\u00e0nh<\/h2>\n

      Tr\u00ean th\u1ef1c t\u1ebf, h\u00e3y ch\u1ecdn m\u00e1c th\u00e9p d\u1ef1a tr\u00ean m\u00f4i tr\u01b0\u1eddng: SUS304 cho m\u00f4i tr\u01b0\u1eddng trong nh\u00e0\/kh\u00f4 r\u00e1o; SUS316 cho m\u00f4i tr\u01b0\u1eddng bi\u1ec3n\/axit. \u0110\u1ea3m b\u1ea3o c\u00e1c b\u1ed9 ph\u1eadn gh\u00e9p n\u1ed1i c\u00f3 m\u00e1c th\u00e9p ph\u00f9 h\u1ee3p \u0111\u1ec3 tr\u00e1nh \u0103n m\u00f2n \u0111i\u1ec7n h\u00f3a. T\u00ednh to\u00e1n t\u1ea3i tr\u1ecdng tr\u01b0\u1edbc c\u1ea7n t\u00ednh \u0111\u1ebfn \u1ee9ng su\u1ea5t gi\u1edbi h\u1ea1n \u0111\u00e0n h\u1ed3i t\u1eeb 70-80% \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o c\u00e1c m\u1ed1i n\u1ed1i ch\u1eafc ch\u1eafn.<\/p>\n

      Ki\u1ec3m tra: S\u1eed d\u1ee5ng ph\u01b0\u01a1ng ph\u00e1p k\u00e9o tr\u1ef1c ti\u1ebfp ho\u1eb7c th\u1eed nghi\u1ec7m n\u00eam theo ti\u00eau chu\u1ea9n. Quy \u0111\u1ecbnh trong ng\u00e0nh khuy\u1ebfn ngh\u1ecb gi\u1ea3m t\u1ea3i tr\u1ecdng \u0111\u1ed1i v\u1edbi t\u1ea3i tr\u1ecdng chu k\u1ef3 ho\u1eb7c nhi\u1ec7t \u0111\u1ed9 cao (th\u00e9p austenit s\u1ebd m\u1ec1m \u0111i \u1edf nhi\u1ec7t \u0111\u1ed9 tr\u00ean 400\u00b0C).<\/p>\n

      \u0110\u1ed1i v\u1edbi vi\u1ec7c mua s\u1eafm: X\u00e1c \u0111\u1ecbnh r\u00f5 c\u1ea5p \u0111\u1ed9, k\u00edch th\u01b0\u1edbc v\u00e0 ti\u00eau chu\u1ea9n (v\u00ed d\u1ee5: ISO 3506 A2-70). Ki\u1ec3m tra ch\u1ee9ng nh\u1eadn \u0111\u1ed1i v\u1edbi c\u00e1c \u1ee9ng d\u1ee5ng quan tr\u1ecdng nh\u01b0 h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5 ho\u1eb7c b\u00ecnh ch\u1ecbu \u00e1p l\u1ef1c.<\/p>\n

      C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p (FAQ)<\/h2>\n

      T\u1ea1i sao th\u00e9p kh\u00f4ng g\u1ec9 SUS304 th\u00f4 c\u00f3 \u0111\u1ed9 b\u1ec1n k\u00e9o kho\u1ea3ng 500 MPa, nh\u01b0ng \u1ed1c v\u00edt l\u1ea1i \u0111\u1ea1t \u0111\u1ebfn 700 MPa?<\/p>\n

      Gia c\u00f4ng ngu\u1ed9i trong qu\u00e1 tr\u00ecnh s\u1ea3n xu\u1ea5t g\u00e2y ra hi\u1ec7n t\u01b0\u1ee3ng c\u1ee9ng h\u00f3a do bi\u1ebfn d\u1ea1ng, l\u00e0m t\u0103ng \u0111\u1ed9 b\u1ec1n v\u00e0 \u0111\u1ed9 c\u1ee9ng m\u00e0 kh\u00f4ng c\u1ea7n x\u1eed l\u00fd nhi\u1ec7t.<\/p>\n

       <\/p>\n

      S\u1ef1 kh\u00e1c bi\u1ec7t ch\u00ednh gi\u1eefa SUS304 v\u00e0 SUS316 d\u00f9ng l\u00e0m \u1ed1c v\u00edt l\u00e0 g\u00ec?<\/p>\n

      Th\u00e9p kh\u00f4ng g\u1ec9 SUS316 bao g\u1ed3m molypden 2-3% \u0111\u1ec3 t\u0103ng kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n trong m\u00f4i tr\u01b0\u1eddng ch\u1ee9a clorua, c\u00f9ng v\u1edbi h\u00e0m l\u01b0\u1ee3ng niken cao h\u01a1n m\u1ed9t ch\u00fat v\u00e0 h\u00e0m l\u01b0\u1ee3ng crom \u0111\u01b0\u1ee3c \u0111i\u1ec1u ch\u1ec9nh.<\/p>\n

       <\/p>\n

      L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 t\u00ednh to\u00e1n t\u1ea3i tr\u1ecdng k\u00e9o cho m\u1ed9t k\u00edch th\u01b0\u1edbc v\u00edt c\u1ee5 th\u1ec3?<\/p>\n

      Nh\u00e2n c\u01b0\u1eddng \u0111\u1ed9 k\u00e9o t\u1ed1i thi\u1ec3u (v\u00ed d\u1ee5: 700 MPa cho A2-70) v\u1edbi di\u1ec7n t\u00edch ch\u1ecbu \u1ee9ng su\u1ea5t (As) t\u00ednh b\u1eb1ng mm\u00b2, sau \u0111\u00f3 chuy\u1ec3n \u0111\u1ed5i sang kN (chia cho 1000).<\/p>\n

       <\/p>\n

      T\u1ea5t c\u1ea3 c\u00e1c \u1ed1c v\u00edt SUS316 \u0111\u1ec1u \u0111\u1ea1t ti\u00eau chu\u1ea9n A4-80 ph\u1ea3i kh\u00f4ng?<\/p>\n

      Kh\u00f4ng; bu l\u00f4ng l\u1ee5c gi\u00e1c ti\u00eau chu\u1ea9n c\u00f3 c\u01b0\u1eddng \u0111\u1ed9 A4-70 (700 MPa), trong khi \u0111ai \u1ed1c c\u00f3 th\u1ec3 \u0111\u1ea1t A4-80 (800 MPa). Ki\u1ec3m tra k\u00edch th\u01b0\u1edbc v\u00e0 lo\u1ea1i.<\/p>\n

       <\/p>\n

      Ti\u00eau chu\u1ea9n m\u00f4-men xo\u1eafn cho \u1ed1c v\u00edt th\u00e9p kh\u00f4ng g\u1ec9 \u0111\u01b0\u1ee3c quy \u0111\u1ecbnh \u1edf \u0111\u00e2u?<\/p>\n

      Theo ti\u00eau chu\u1ea9n GB\/T 3098.6 ho\u1eb7c ISO 3506, cung c\u1ea5p c\u00e1c gi\u00e1 tr\u1ecb m\u00f4-men xo\u1eafn ph\u00e1 v\u1ee1 t\u1ed1i thi\u1ec3u \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o l\u1eafp \u0111\u1eb7t an to\u00e0n.<\/p>\n

       <\/p>\n

      \u1ed0c v\u00edt b\u1eb1ng th\u00e9p kh\u00f4ng g\u1ec9 c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng \u0111\u01b0\u1ee3c trong c\u00e1c \u1ee9ng d\u1ee5ng nhi\u1ec7t \u0111\u1ed9 cao kh\u00f4ng?<\/p>\n

      C\u00f3, ch\u1ecbu \u0111\u01b0\u1ee3c \u0111\u1ebfn 800\u00b0C trong th\u1eddi gian ng\u1eafn, nh\u01b0ng \u0111\u1ed9 b\u1ec1n s\u1ebd gi\u1ea3m; n\u00ean s\u1eed d\u1ee5ng c\u00e1c lo\u1ea1i th\u00e9p \u1ed5n \u0111\u1ecbnh nh\u01b0 321 n\u1ebfu mu\u1ed1n ch\u1ecbu nhi\u1ec7t trong th\u1eddi gian d\u00e0i.<\/p>\n

       <\/p>","protected":false},"excerpt":{"rendered":"

      Introduction to Stainless Steel Screw Performance Standards Stainless steel screws are essential fasteners in industries requiring corrosion resistance, such as marine, chemical processing, and food equipment. This article details the mechanical performance standards for screws made from austenitic stainless steels SUS304 and SUS316, excluding dimensions which are covered in standards like ISO 3506 or GB\/T […]<\/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-5867","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\/5867","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=5867"}],"version-history":[{"count":2,"href":"https:\/\/korea-transmission.com\/vi\/wp-json\/wp\/v2\/posts\/5867\/revisions"}],"predecessor-version":[{"id":5869,"href":"https:\/\/korea-transmission.com\/vi\/wp-json\/wp\/v2\/posts\/5867\/revisions\/5869"}],"wp:attachment":[{"href":"https:\/\/korea-transmission.com\/vi\/wp-json\/wp\/v2\/media?parent=5867"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/korea-transmission.com\/vi\/wp-json\/wp\/v2\/categories?post=5867"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/korea-transmission.com\/vi\/wp-json\/wp\/v2\/tags?post=5867"}],"curies":[{"name":"trang web","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}