{"id":5831,"date":"2025-12-25T02:43:31","date_gmt":"2025-12-25T02:43:31","guid":{"rendered":"https:\/\/korea-transmission.com\/?p=5831"},"modified":"2025-12-25T02:43:31","modified_gmt":"2025-12-25T02:43:31","slug":"stainless-steel-u-bolts-guide","status":"publish","type":"post","link":"https:\/\/korea-transmission.com\/vi\/blog\/stainless-steel-u-bolts-guide\/","title":{"rendered":"H\u01b0\u1edbng d\u1eabn s\u1eed d\u1ee5ng bu l\u00f4ng ch\u1eef U b\u1eb1ng th\u00e9p kh\u00f4ng g\u1ec9"},"content":{"rendered":"

Gi\u1edbi thi\u1ec7u v\u1ec1 bu l\u00f4ng ch\u1eef U b\u1eb1ng th\u00e9p kh\u00f4ng g\u1ec9<\/h2>\n
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Bu l\u00f4ng ch\u1eef U b\u1eb1ng th\u00e9p kh\u00f4ng g\u1ec9 l\u00e0 lo\u1ea1i \u1ed1c v\u00edt chuy\u00ean d\u1ee5ng \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 c\u1ed1 \u0111\u1ecbnh \u1ed1ng, \u0111\u01b0\u1eddng \u1ed1ng v\u00e0 c\u00e1c v\u1eadt th\u1ec3 h\u00ecnh tr\u1ee5 kh\u00e1c v\u00e0o k\u1ebft c\u1ea5u. \u0110\u1eb7c tr\u01b0ng b\u1edfi th\u00e2n h\u00ecnh ch\u1eef U v\u1edbi c\u00e1c ch\u00e2n ren, nh\u1eefng bu l\u00f4ng n\u00e0y cung c\u1ea5p l\u1ef1c k\u1eb9p \u0111\u00e1ng tin c\u1eady trong m\u00f4i tr\u01b0\u1eddng \u0103n m\u00f2n. Theo ti\u00eau chu\u1ea9n JB\/ZQ4321-97, ch\u00fang r\u1ea5t c\u1ea7n thi\u1ebft trong c\u00e1c ng\u00e0nh c\u00f4ng nghi\u1ec7p \u0111\u00f2i h\u1ecfi kh\u1ea3 n\u0103ng ch\u1ed1ng oxy h\u00f3a v\u00e0 ti\u1ebfp x\u00fac h\u00f3a ch\u1ea5t cao, ch\u1eb3ng h\u1ea1n nh\u01b0 h\u00e0ng h\u1ea3i, ch\u1ebf bi\u1ebfn h\u00f3a ch\u1ea5t v\u00e0 s\u1ea3n xu\u1ea5t th\u1ef1c ph\u1ea9m.<\/p>\n

Ch\u1ee9c n\u0103ng ch\u00ednh c\u1ee7a bu l\u00f4ng ch\u1eef U l\u00e0 t\u1ea1o ra l\u1ef1c gi\u1eef ch\u1eafc ch\u1eafn, c\u00f3 th\u1ec3 \u0111i\u1ec1u ch\u1ec9nh xung quanh c\u00e1c chi ti\u1ebft h\u00ecnh tr\u1ee5 m\u00e0 kh\u00f4ng c\u1ea7n xuy\u00ean th\u1ee7ng tr\u1ef1c ti\u1ebfp, ph\u00e2n b\u1ed5 t\u1ea3i tr\u1ecdng \u0111\u1ec1u \u0111\u1ec3 ng\u0103n ng\u1eeba bi\u1ebfn d\u1ea1ng. Th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng k\u1ebft h\u1ee3p v\u1edbi \u0111ai \u1ed1c, v\u00f2ng \u0111\u1ec7m ph\u1eb3ng v\u00e0 v\u00f2ng \u0111\u1ec7m l\u00f2 xo, ch\u00fang t\u1ea1o th\u00e0nh m\u1ed9t c\u1ee5m l\u1eafp r\u00e1p ho\u00e0n ch\u1ec9nh gi\u00fap t\u0103ng c\u01b0\u1eddng kh\u1ea3 n\u0103ng ch\u1ed1ng rung v\u00e0 kh\u1ea3 n\u0103ng ch\u1ecbu t\u1ea3i. H\u01b0\u1edbng d\u1eabn n\u00e0y s\u1ebd tr\u00ecnh b\u00e0y chi ti\u1ebft h\u01a1n v\u1ec1 c\u00e1c \u0111\u1eb7c t\u00ednh k\u1ef9 thu\u1eadt c\u1ee7a ch\u00fang, \u0111\u1ea3m b\u1ea3o tu\u00e2n th\u1ee7 c\u00e1c ti\u00eau chu\u1ea9n qu\u1ed1c t\u1ebf nh\u01b0 ISO 898 v\u1ec1 t\u00ednh ch\u1ea5t c\u01a1 h\u1ecdc v\u00e0 ASTM A380 v\u1ec1 qu\u00e1 tr\u00ecnh th\u1ee5 \u0111\u1ed9ng h\u00f3a.<\/p>\n

C\u00e1c chuy\u00ean gia c\u1ea7n l\u01b0u \u00fd r\u1eb1ng vi\u1ec7c l\u1ef1a ch\u1ecdn ph\u00f9 h\u1ee3p d\u1ef1a tr\u00ean \u0111\u01b0\u1eddng k\u00ednh \u1ed1ng v\u00e0 \u0111i\u1ec1u ki\u1ec7n m\u00f4i tr\u01b0\u1eddng l\u00e0 r\u1ea5t quan tr\u1ecdng \u0111\u1ed1i v\u1edbi tu\u1ed5i th\u1ecd v\u00e0 s\u1ef1 an to\u00e0n. V\u00ed d\u1ee5, trong m\u00f4i tr\u01b0\u1eddng c\u00f3 \u0111\u1ed9 \u1ea9m cao, bu l\u00f4ng ch\u1eef U b\u1eb1ng th\u00e9p kh\u00f4ng g\u1ec9 gi\u00fap ng\u0103n ng\u1eeba c\u00e1c h\u01b0 h\u1ecfng do g\u1ec9 s\u00e9t th\u01b0\u1eddng g\u1eb7p \u1edf c\u00e1c lo\u1ea1i bu l\u00f4ng b\u1eb1ng th\u00e9p carbon.<\/p>\n

<\/div>\n<\/div>\n

Ti\u00eau chu\u1ea9n v\u00e0 th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt v\u1eadt li\u1ec7u<\/h2>\n
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Bu l\u00f4ng ch\u1eef U b\u1eb1ng th\u00e9p kh\u00f4ng g\u1ec9 tu\u00e2n th\u1ee7 ti\u00eau chu\u1ea9n Trung Qu\u1ed1c JB\/ZQ4321-97, quy \u0111\u1ecbnh k\u00edch th\u01b0\u1edbc, dung sai v\u00e0 ph\u01b0\u01a1ng ph\u00e1p th\u1eed nghi\u1ec7m. V\u1eadt li\u1ec7u ch\u1ee7 y\u1ebfu l\u00e0 SUS304 (AISI 304) ho\u1eb7c SUS316 (AISI 316), c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n tuy\u1ec7t v\u1eddi. SUS304 c\u00f3 \u0111\u1ed9 b\u1ec1n t\u1ed1t trong \u0111i\u1ec1u ki\u1ec7n s\u1eed d\u1ee5ng th\u00f4ng th\u01b0\u1eddng v\u1edbi h\u00e0m l\u01b0\u1ee3ng crom 18% v\u00e0 niken 8%, ph\u00f9 h\u1ee3p v\u1edbi m\u00f4i tr\u01b0\u1eddng \u0103n m\u00f2n nh\u1eb9. SUS316, v\u1edbi h\u00e0m l\u01b0\u1ee3ng molypden (2-3%) \u0111\u01b0\u1ee3c b\u1ed5 sung, ho\u1ea1t \u0111\u1ed9ng t\u1ed1t trong m\u00f4i tr\u01b0\u1eddng gi\u00e0u clorua, ch\u1eb3ng h\u1ea1n nh\u01b0 khu v\u1ef1c ven bi\u1ec3n ho\u1eb7c nh\u00e0 m\u00e1y h\u00f3a ch\u1ea5t, theo ti\u00eau chu\u1ea9n ASTM A276.<\/p>\n

C\u00e1c v\u1eadt li\u1ec7u n\u00e0y \u0111\u1ea3m b\u1ea3o \u0111\u00e1p \u1ee9ng c\u00e1c y\u00eau c\u1ea7u v\u1ec1 t\u00ednh ch\u1ea5t c\u01a1 h\u1ecdc: \u0111\u1ed9 b\u1ec1n k\u00e9o t\u1eeb 520-700 MPa \u0111\u1ed1i v\u1edbi SUS304 v\u00e0 515-690 MPa \u0111\u1ed1i v\u1edbi SUS316, v\u1edbi t\u1ef7 l\u1ec7 gi\u00e3n d\u00e0i v\u01b0\u1ee3t qu\u00e1 40% \u0111\u1ec3 ch\u1ecbu \u0111\u01b0\u1ee3c u\u1ed1n cong m\u00e0 kh\u00f4ng b\u1ecb g\u00e3y. C\u00e1c ph\u01b0\u01a1ng ph\u00e1p x\u1eed l\u00fd b\u1ec1 m\u1eb7t nh\u01b0 th\u1ee5 \u0111\u1ed9ng h\u00f3a theo ti\u00eau chu\u1ea9n ASTM A967 gi\u00fap t\u0103ng c\u01b0\u1eddng kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n r\u1ed7 v\u00e0 \u0103n m\u00f2n khe h\u1edf.<\/p>\n

H\u01b0\u1edbng d\u1eabn l\u1ef1a ch\u1ecdn: \u0110\u00e1nh gi\u00e1 \u0111\u1ed9 pH, nhi\u1ec7t \u0111\u1ed9 v\u00e0 m\u1ee9c \u0111\u1ed9 ti\u1ebfp x\u00fac v\u1edbi mu\u1ed1i trong m\u00f4i tr\u01b0\u1eddng ho\u1ea1t \u0111\u1ed9ng. \u0110\u1ed1i v\u1edbi c\u00e1c \u1ee9ng d\u1ee5ng h\u00e0ng h\u1ea3i, \u01b0u ti\u00ean SUS316 \u0111\u1ec3 gi\u1ea3m thi\u1ec3u hi\u1ec7n t\u01b0\u1ee3ng n\u1ee9t do \u0103n m\u00f2n \u1ee9ng su\u1ea5t. Lu\u00f4n ki\u1ec3m tra ch\u1ee9ng ch\u1ec9 v\u1eadt li\u1ec7u \u0111\u1ec3 x\u00e1c nh\u1eadn tu\u00e2n th\u1ee7 c\u00e1c ti\u00eau chu\u1ea9n, ng\u0103n ng\u1eeba hi\u1ec7u su\u1ea5t k\u00e9m trong c\u00e1c h\u1ec7 th\u1ed1ng l\u1eafp \u0111\u1eb7t quan tr\u1ecdng.<\/p>\n

<\/div>\n

S\u1ea3n ph\u1ea9m \u0111\u01b0\u1ee3c s\u1ea3n xu\u1ea5t t\u1eeb \u200b\u200bthanh th\u00e9p kh\u00f4ng g\u1ec9 SUS304 ho\u1eb7c SUS316, v\u1edbi \u0111\u1ea7y \u0111\u1ee7 c\u00e1c th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt theo h\u1ec7 m\u00e9t v\u00e0 h\u1ec7 inch. K\u00edch th\u01b0\u1edbc kh\u00f4ng ti\u00eau chu\u1ea9n c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c t\u00f9y ch\u1ec9nh, v\u00e0 c\u00e1c b\u1ed9 ph\u1eadn l\u1eafp r\u00e1p (bu l\u00f4ng + \u0111ai \u1ed1c + v\u00f2ng \u0111\u1ec7m) \u0111\u01b0\u1ee3c cung c\u1ea5p \u0111\u1ec3 thu\u1eadn ti\u1ec7n cho kh\u00e1ch h\u00e0ng.<\/p>\n<\/div>\n

\u0110\u1eb7c \u0111i\u1ec3m thi\u1ebft k\u1ebf v\u00e0 d\u1eef li\u1ec7u k\u00edch th\u01b0\u1edbc<\/h2>\n
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Thi\u1ebft k\u1ebf bu l\u00f4ng ch\u1eef U b\u1eb1ng th\u00e9p kh\u00f4ng g\u1ec9 \u0111\u01b0\u1ee3c t\u1ed1i \u01b0u h\u00f3a cho vi\u1ec7c c\u1ed1 \u0111\u1ecbnh \u1ed1ng, v\u1edbi c\u00e1c th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt d\u1ef1a tr\u00ean \u0111\u01b0\u1eddng k\u00ednh \u1ed1ng (Da). C\u00e1c k\u00edch th\u01b0\u1edbc ch\u00ednh bao g\u1ed3m b\u00e1n k\u00ednh (R), \u0111\u01b0\u1eddng k\u00ednh ren (d), t\u1ed5ng chi\u1ec1u d\u00e0i, chi\u1ec1u r\u1ed9ng b\u00ean trong (a), chi\u1ec1u d\u00e0i ch\u00e2n (b) v\u00e0 chi\u1ec1u d\u00e0i ren (m). B\u1ea3ng sau, \u0111\u01b0\u1ee3c tr\u00edch t\u1eeb JB\/ZQ4321-97, cung c\u1ea5p c\u00e1c gi\u00e1 tr\u1ecb tham kh\u1ea3o t\u00ednh b\u1eb1ng mm cho c\u00e1c k\u00edch th\u01b0\u1edbc th\u00f4ng d\u1ee5ng:<\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Da<\/th>\nR<\/th>\nd<\/th>\nT\u1ed5ng chi\u1ec1u d\u00e0i<\/th>\nM\u1ed9t<\/th>\nb<\/th>\nm<\/th>\n<\/tr>\n<\/thead>\n
14<\/td>\n8<\/td>\nM6<\/td>\n98<\/td>\n33<\/td>\n22<\/td>\n22<\/td>\n<\/tr>\n
18<\/td>\n10<\/td>\n108<\/td>\n35<\/td>\n26<\/td>\n<\/tr>\n
22<\/td>\n12<\/td>\nM10<\/td>\n135<\/td>\n42<\/td>\n28<\/td>\n34<\/td>\n<\/tr>\n
25<\/td>\n14<\/td>\n143<\/td>\n44<\/td>\n38<\/td>\n<\/tr>\n
33<\/td>\n18<\/td>\n160<\/td>\n48<\/td>\n46<\/td>\n<\/tr>\n
38<\/td>\n20<\/td>\nM12<\/td>\n192<\/td>\n55<\/td>\n32<\/td>\n52<\/td>\n<\/tr>\n
42<\/td>\n22<\/td>\n202<\/td>\n57<\/td>\n56<\/td>\n<\/tr>\n
45<\/td>\n24<\/td>\n210<\/td>\n59<\/td>\n60<\/td>\n<\/tr>\n
48<\/td>\n25<\/td>\n220<\/td>\n60<\/td>\n62<\/td>\n<\/tr>\n
51<\/td>\n27<\/td>\n225<\/td>\n62<\/td>\n66<\/td>\n<\/tr>\n
57<\/td>\n31<\/td>\n240<\/td>\n66<\/td>\n74<\/td>\n<\/tr>\n
60<\/td>\n32<\/td>\n250<\/td>\n67<\/td>\n76<\/td>\n<\/tr>\n
76<\/td>\n40<\/td>\n289<\/td>\n75<\/td>\n92<\/td>\n<\/tr>\n
83<\/td>\n43<\/td>\n310<\/td>\n78<\/td>\n98<\/td>\n<\/tr>\n
89<\/td>\n46<\/td>\n325<\/td>\n81<\/td>\n104<\/td>\n<\/tr>\n
102<\/td>\n53<\/td>\nM16<\/td>\n365<\/td>\n93<\/td>\n38<\/td>\n122<\/td>\n<\/tr>\n
108<\/td>\n56<\/td>\n390<\/td>\n96<\/td>\n128<\/td>\n<\/tr>\n
114<\/td>\n59<\/td>\n405<\/td>\n99<\/td>\n134<\/td>\n<\/tr>\n
133<\/td>\n69<\/td>\n450<\/td>\n108<\/td>\n154<\/td>\n<\/tr>\n
140<\/td>\n72<\/td>\n470<\/td>\n112<\/td>\n160<\/td>\n<\/tr>\n
159<\/td>\n82<\/td>\n520<\/td>\n122<\/td>\n180<\/td>\n<\/tr>\n
165<\/td>\n85<\/td>\n538<\/td>\n125<\/td>\n186<\/td>\n<\/tr>\n
219<\/td>\n112<\/td>\n680<\/td>\n152<\/td>\n240<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Vi\u1ec7c \u0111\u00e1nh d\u1ea5u tu\u00e2n theo c\u00e1c quy \u01b0\u1edbc trong \u0111\u00f3 Da bi\u1ec3u th\u1ecb \u0111\u01b0\u1eddng k\u00ednh \u1ed1ng (v\u00ed d\u1ee5: 25 mm ch\u1ec9 \u0111\u1ecbnh bu l\u00f4ng ch\u1eef U cho \u1ed1ng 25 mm). Ren tu\u00e2n th\u1ee7 ti\u00eau chu\u1ea9n ISO 262, \u0111\u1ea3m b\u1ea3o t\u00ednh t\u01b0\u01a1ng th\u00edch. \u0110\u1ed1i v\u1edbi k\u00edch th\u01b0\u1edbc t\u00f9y ch\u1ec9nh, vui l\u00f2ng li\u00ean h\u1ec7 nh\u00e0 s\u1ea3n xu\u1ea5t \u0111\u1ec3 duy tr\u00ec t\u00ednh to\u00e0n v\u1eb9n c\u1ea5u tr\u00fac.<\/p>\n

L\u1eddi khuy\u00ean chuy\u00ean nghi\u1ec7p: S\u1eed d\u1ee5ng ph\u00e2n t\u00edch ph\u1ea7n t\u1eed h\u1eefu h\u1ea1n (FEA) \u0111\u1ec3 ki\u1ec3m tra s\u1ef1 ph\u00e2n b\u1ed1 t\u1ea3i tr\u1ecdng \u0111\u1ed1i v\u1edbi c\u00e1c thi\u1ebft k\u1ebf kh\u00f4ng ti\u00eau chu\u1ea9n, \u0111\u1ea3m b\u1ea3o tu\u00e2n th\u1ee7 ti\u00eau chu\u1ea9n ASME B31.3 cho h\u1ec7 th\u1ed1ng \u0111\u01b0\u1eddng \u1ed1ng.<\/p>\n<\/div>\n

H\u01b0\u1edbng d\u1eabn \u1ee9ng d\u1ee5ng v\u00e0 c\u00e0i \u0111\u1eb7t<\/h2>\n
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Bu l\u00f4ng ch\u1eef U b\u1eb1ng th\u00e9p kh\u00f4ng g\u1ec9 ch\u1ee7 y\u1ebfu \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 c\u1ed1 \u0111\u1ecbnh c\u00e1c \u0111\u01b0\u1eddng \u1ed1ng ho\u1eb7c \u1ed1ng th\u00e9p kh\u00f4ng g\u1ec9 trong x\u00e2y d\u1ef1ng, h\u1ec7 th\u1ed1ng \u0111\u01b0\u1eddng \u1ed1ng v\u00e0 c\u00f4ng nghi\u1ec7p. Ch\u00fang gi\u00fap c\u1ed1 \u0111\u1ecbnh c\u00e1c chi ti\u1ebft v\u00e0o d\u1ea7m, t\u01b0\u1eddng ho\u1eb7c gi\u00e1 \u0111\u1ee1, mang l\u1ea1i s\u1ef1 \u1ed5n \u0111\u1ecbnh ch\u1ed1ng l\u1ea1i rung \u0111\u1ed9ng v\u00e0 gi\u00e3n n\u1edf nhi\u1ec7t.<\/p>\n

C\u00e1c b\u01b0\u1edbc l\u1eafp \u0111\u1eb7t theo quy tr\u00ecnh ti\u00eau chu\u1ea9n:<\/p>\n

    \n
  1. \u0110\u1eb7t bu l\u00f4ng ch\u1eef U xung quanh \u1ed1ng, c\u0103n ch\u1ec9nh c\u00e1c ch\u00e2n xuy\u00ean qua c\u00e1c l\u1ed7 l\u1eafp \u0111\u1eb7t.<\/li>\n
  2. G\u1eafn th\u00eam c\u00e1c v\u00f2ng \u0111\u1ec7m ph\u1eb3ng v\u00e0 v\u00f2ng \u0111\u1ec7m l\u00f2 xo \u0111\u1ec3 ph\u00e2n b\u1ed5 t\u1ea3i tr\u1ecdng v\u00e0 h\u1ea5p th\u1ee5 ch\u1ea5n \u0111\u1ed9ng.<\/li>\n
  3. V\u1eb7n \u0111ai \u1ed1c v\u00e0o ch\u00e2n v\u00e0 si\u1ebft ch\u1eb7t theo gi\u00e1 tr\u1ecb quy \u0111\u1ecbnh (v\u00ed d\u1ee5: 20-30 Nm cho M10, theo ti\u00eau chu\u1ea9n ISO 898).<\/li>\n
  4. \u0110\u1ea3m b\u1ea3o si\u1ebft ch\u1eb7t \u0111\u1ec1u \u0111\u1ec3 tr\u00e1nh bi\u1ebfn d\u1ea1ng \u1ed1ng.<\/li>\n<\/ol>\n

    Trong m\u00f4i tr\u01b0\u1eddng \u0103n m\u00f2n, h\u00e3y k\u1ebft h\u1ee3p v\u1edbi c\u00e1c h\u1ee3p ch\u1ea5t ch\u1ed1ng k\u1eb9t \u0111\u1ec3 t\u1ea1o \u0111i\u1ec1u ki\u1ec7n thu\u1eadn l\u1ee3i cho vi\u1ec7c th\u00e1o l\u1eafp trong t\u01b0\u01a1ng lai. \u0110\u1ed1i v\u1edbi c\u00e1c \u1ee9ng d\u1ee5ng ch\u1ecbu t\u1ea3i tr\u1ecdng cao, h\u00e3y xem x\u00e9t c\u1ea5u h\u00ecnh \u0111ai \u1ed1c k\u00e9p \u0111\u1ec3 kh\u00f3a. H\u01b0\u1edbng d\u1eabn: Th\u01b0\u1eddng xuy\u00ean ki\u1ec3m tra c\u00e1c d\u1ea5u hi\u1ec7u m\u1ecfi, thay th\u1ebf n\u1ebfu \u0111\u1ed9 gi\u00e3n d\u00e0i v\u01b0\u1ee3t qu\u00e1 5% chi\u1ec1u d\u00e0i ban \u0111\u1ea7u \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o c\u00e1c ti\u00eau chu\u1ea9n an to\u00e0n nh\u01b0 OSHA 1910.179.<\/p>\n<\/div>\n

    Quy tr\u00ecnh s\u1ea3n xu\u1ea5t v\u00e0 \u0111\u1ea3m b\u1ea3o ch\u1ea5t l\u01b0\u1ee3ng<\/h2>\n
    \n

    Qu\u00e1 tr\u00ecnh s\u1ea3n xu\u1ea5t b\u1eaft \u0111\u1ea7u b\u1eb1ng vi\u1ec7c u\u1ed1n ngu\u1ed9i c\u00e1c thanh SUS304 ho\u1eb7c SUS316 \u0111\u1ec3 t\u1ea1o th\u00e0nh h\u00ecnh ch\u1eef U, sau \u0111\u00f3 l\u00e0 gia c\u00f4ng ren theo ti\u00eau chu\u1ea9n ISO 965. C\u00f3 th\u1ec3 \u00e1p d\u1ee5ng x\u1eed l\u00fd nhi\u1ec7t \u0111\u1ec3 t\u0103ng \u0111\u1ed9 d\u1ebbo, v\u00e0 ho\u00e0n thi\u1ec7n b\u1ec1 m\u1eb7t b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p \u0111i\u1ec7n ph\u00e2n \u0111\u1ec3 c\u1ea3i thi\u1ec7n kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n theo ti\u00eau chu\u1ea9n ASTM B912.<\/p>\n

    \u0110\u1ea3m b\u1ea3o ch\u1ea5t l\u01b0\u1ee3ng bao g\u1ed3m ki\u1ec3m tra k\u00edch th\u01b0\u1edbc b\u1eb1ng th\u01b0\u1edbc k\u1eb9p v\u00e0 th\u01b0\u1edbc \u0111o, th\u1eed nghi\u1ec7m \u0111\u1ed9 b\u1ec1n k\u00e9o \u0111\u1ec3 x\u00e1c nh\u1eadn \u0111\u1ed9 b\u1ec1n, v\u00e0 th\u1eed nghi\u1ec7m phun mu\u1ed1i (ASTM B117) \u0111\u1ec3 ki\u1ec3m tra kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n. C\u00e1c l\u00f4 s\u1ea3n ph\u1ea9m \u0111\u01b0\u1ee3c ch\u1ee9ng nh\u1eadn v\u1edbi kh\u1ea3 n\u0103ng truy xu\u1ea5t ngu\u1ed3n g\u1ed1c \u0111\u1ebfn t\u1eebng l\u00f4 nguy\u00ean li\u1ec7u th\u00f4.<\/p>\n

    Khuy\u1ebfn ngh\u1ecb: Ch\u1ecdn ngu\u1ed3n cung t\u1eeb c\u00e1c nh\u00e0 cung c\u1ea5p \u0111\u1ea1t ch\u1ee9ng nh\u1eadn ISO 9001. \u0110\u1ed1i v\u1edbi c\u00e1c s\u1ea3n ph\u1ea9m \u0111\u1eb7t l\u00e0m ri\u00eang, c\u1ea7n cung c\u1ea5p b\u1ea3n v\u1ebd chi ti\u1ebft ch\u1ec9 r\u00f5 dung sai (\u00b10,5 mm cho chi\u1ec1u d\u00e0i) \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 ch\u00ednh x\u00e1c.<\/p>\n<\/div>\n

    C\u00e1c y\u1ebfu t\u1ed1 c\u1ea7n xem x\u00e9t v\u1ec1 b\u1ea3o tr\u00ec v\u00e0 hi\u1ec7u su\u1ea5t<\/h2>\n
    \n

    Vi\u1ec7c b\u1ea3o tr\u00ec bao g\u1ed3m ki\u1ec3m tra m\u00f4-men xo\u1eafn \u0111\u1ecbnh k\u1ef3 v\u00e0 ki\u1ec3m tra tr\u1ef1c quan xem c\u00f3 b\u1ecb \u0103n m\u00f2n ho\u1eb7c m\u00e0i m\u00f2n hay kh\u00f4ng. Trong m\u00f4i tr\u01b0\u1eddng kh\u1eafc nghi\u1ec7t, c\u1ea7n ph\u1ee7 l\u1edbp b\u1ea3o v\u1ec7 tu\u00e2n th\u1ee7 ti\u00eau chu\u1ea9n NACE MR0175. C\u00e1c y\u1ebfu t\u1ed1 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn hi\u1ec7u su\u1ea5t: C\u1ea7n t\u00ednh \u0111\u1ebfn h\u1ec7 s\u1ed1 gi\u00e3n n\u1edf nhi\u1ec7t (16-18 \u00d7 10^{-6}\/K \u0111\u1ed1i v\u1edbi th\u00e9p kh\u00f4ng g\u1ec9) \u0111\u1ec3 tr\u00e1nh b\u1ecb l\u1ecfng.<\/p>\n

    \u0110\u1ed9 tin c\u1eady l\u00e2u d\u00e0i ph\u1ee5 thu\u1ed9c v\u00e0o vi\u1ec7c tr\u00e1nh \u0103n m\u00f2n \u0111i\u1ec7n h\u00f3a b\u1eb1ng c\u00e1ch l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u ph\u00f9 h\u1ee3p. S\u1eed d\u1ee5ng c\u00e1c t\u1ea5m c\u00e1ch ly cho c\u00e1c kim lo\u1ea1i kh\u00e1c nhau. L\u1eddi khuy\u00ean chuy\u00ean nghi\u1ec7p: Th\u1ef1c hi\u1ec7n b\u1ea3o tr\u00ec d\u1ef1 \u0111o\u00e1n b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng ph\u00e2n t\u00edch rung \u0111\u1ed9ng \u0111\u1ec3 ph\u00e1t hi\u1ec7n s\u1edbm c\u00e1c s\u1ef1 c\u1ed1, ph\u00f9 h\u1ee3p v\u1edbi ti\u00eau chu\u1ea9n API 570 v\u1ec1 t\u00ednh to\u00e0n v\u1eb9n c\u1ee7a \u0111\u01b0\u1eddng \u1ed1ng.<\/p>\n<\/div>\n

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

    Bu l\u00f4ng ch\u1eef U b\u1eb1ng th\u00e9p kh\u00f4ng g\u1ec9 SUS304 v\u00e0 SUS316 c\u00f3 g\u00ec kh\u00e1c nhau?<\/h3>\n

    Th\u00e9p kh\u00f4ng g\u1ec9 SUS304 c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n n\u00f3i chung, trong khi SUS316 cung c\u1ea5p kh\u1ea3 n\u0103ng b\u1ea3o v\u1ec7 v\u01b0\u1ee3t tr\u1ed9i ch\u1ed1ng l\u1ea1i clorua nh\u1edd h\u00e0m l\u01b0\u1ee3ng molypden, l\u00fd t\u01b0\u1edfng cho c\u00e1c \u1ee9ng d\u1ee5ng h\u00e0ng h\u1ea3i ho\u1eb7c h\u00f3a ch\u1ea5t.<\/p>\n

    T\u00f4i n\u00ean ch\u1ecdn k\u00edch th\u01b0\u1edbc bu l\u00f4ng ch\u1eef U n\u00e0o cho \u0111\u01b0\u1eddng \u1ed1ng c\u1ee7a m\u00ecnh?<\/h3>\n

    \u0110i\u1ec1u ch\u1ec9nh k\u00edch th\u01b0\u1edbc Da sao cho ph\u00f9 h\u1ee3p v\u1edbi \u0111\u01b0\u1eddng k\u00ednh ngo\u00e0i c\u1ee7a \u1ed1ng, \u0111\u1ea3m b\u1ea3o chi\u1ec1u d\u00e0i ch\u00e2n (b) ph\u00f9 h\u1ee3p v\u1edbi \u0111\u1ed9 d\u00e0y l\u1eafp \u0111\u1eb7t. Tham kh\u1ea3o b\u1ea3ng k\u00edch th\u01b0\u1edbc \u0111\u1ec3 c\u00f3 s\u1ef1 ph\u00f9 h\u1ee3p ch\u00ednh x\u00e1c.<\/p>\n

    Bu l\u00f4ng ch\u1eef U b\u1eb1ng th\u00e9p kh\u00f4ng g\u1ec9 c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng \u0111\u01b0\u1ee3c trong m\u00f4i tr\u01b0\u1eddng nhi\u1ec7t \u0111\u1ed9 cao kh\u00f4ng?<\/h3>\n

    \u0110\u00fang v\u1eady, c\u00f3 th\u1ec3 ch\u1ecbu \u0111\u01b0\u1ee3c \u0111\u1ebfn 800\u00b0C \u0111\u1ed1i v\u1edbi SUS304 v\u00e0 870\u00b0C \u0111\u1ed1i v\u1edbi SUS316, nh\u01b0ng c\u1ea7n gi\u1ea3m \u0111\u1ed9 b\u1ec1n khi nhi\u1ec7t \u0111\u1ed9 tr\u00ean 400\u00b0C theo h\u01b0\u1edbng d\u1eabn c\u1ee7a ASME \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o an to\u00e0n.<\/p>\n

    Gi\u00e1 tr\u1ecb momen xo\u1eafn n\u00e0o n\u00ean \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng trong qu\u00e1 tr\u00ecnh l\u1eafp \u0111\u1eb7t?<\/h3>\n

    \u00c1p d\u1ee5ng l\u1ef1c si\u1ebft 10-15 Nm cho \u1ed1c M6, 20-30 Nm cho \u1ed1c M10 v\u00e0 40-60 Nm cho \u1ed1c M12, s\u1eed d\u1ee5ng d\u1ee5ng c\u1ee5 \u0111\u00e3 \u0111\u01b0\u1ee3c hi\u1ec7u chu\u1ea9n v\u00e0 tu\u00e2n theo ti\u00eau chu\u1ea9n ISO 898 \u0111\u1ec3 tr\u00e1nh si\u1ebft qu\u00e1 ch\u1eb7t.<\/p>\n

    L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 ng\u0103n ng\u1eeba bi\u1ebfn d\u1ea1ng \u1ed1ng khi s\u1eed d\u1ee5ng bu l\u00f4ng ch\u1eef U?<\/h3>\n

    S\u1eed d\u1ee5ng v\u00f2ng \u0111\u1ec7m ph\u1eb3ng \u0111\u1ec3 ph\u00e2n b\u1ed5 t\u1ea3i tr\u1ecdng v\u00e0 si\u1ebft ch\u1eb7t \u0111\u1ec1u theo h\u00ecnh ch\u1eef th\u1eadp. \u0110\u1ed1i v\u1edbi \u1ed1ng m\u1ec1m, h\u00e3y s\u1eed d\u1ee5ng l\u1edbp l\u00f3t cao su \u0111\u1ec3 l\u00e0m gi\u1ea3m ch\u1ea5n t\u1ea1i c\u00e1c \u0111i\u1ec3m ti\u1ebfp x\u00fac.<\/p>\n<\/div>\n

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

    Introduction to Stainless Steel U-Bolts Stainless steel U-bolts are specialized fasteners designed for securing pipes, tubes, and other cylindrical objects to structures. Characterized by their U-shaped body with threaded legs, these bolts offer reliable clamping force in corrosive environments. According to JB\/ZQ4321-97, they are essential in industries requiring high resistance to oxidation and chemical exposure, […]<\/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-5831","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\/5831","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=5831"}],"version-history":[{"count":2,"href":"https:\/\/korea-transmission.com\/vi\/wp-json\/wp\/v2\/posts\/5831\/revisions"}],"predecessor-version":[{"id":5833,"href":"https:\/\/korea-transmission.com\/vi\/wp-json\/wp\/v2\/posts\/5831\/revisions\/5833"}],"wp:attachment":[{"href":"https:\/\/korea-transmission.com\/vi\/wp-json\/wp\/v2\/media?parent=5831"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/korea-transmission.com\/vi\/wp-json\/wp\/v2\/categories?post=5831"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/korea-transmission.com\/vi\/wp-json\/wp\/v2\/tags?post=5831"}],"curies":[{"name":"trang web","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}