{"id":5857,"date":"2025-12-25T04:00:33","date_gmt":"2025-12-25T04:00:33","guid":{"rendered":"https:\/\/korea-transmission.com\/?p=5857"},"modified":"2025-12-25T04:00:33","modified_gmt":"2025-12-25T04:00:33","slug":"male-female-screw-standards-in-china","status":"publish","type":"post","link":"https:\/\/korea-transmission.com\/vi\/blog\/male-female-screw-standards-in-china\/","title":{"rendered":"Ti\u00eau chu\u1ea9n v\u00edt \u0111\u1ef1c-c\u00e1i \u1edf Trung Qu\u1ed1c"},"content":{"rendered":"
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Gi\u1edbi thi\u1ec7u<\/h2>\n

\u1ed0c v\u00edt \u0111\u1ef1c-c\u00e1i l\u00e0 lo\u1ea1i \u1ed1c v\u00edt \u0111a n\u0103ng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong c\u00e1c ng\u00e0nh c\u00f4ng nghi\u1ec7p nh\u01b0 \u0111i\u1ec7n t\u1eed, l\u1eafp r\u00e1p khung g\u1ea7m v\u00e0 m\u00e1y m\u00f3c. C\u00e1c b\u1ed9 ph\u1eadn n\u00e0y c\u00f3 m\u1ed9t \u0111\u1ea7u ren \u0111\u1ef1c v\u00e0 m\u1ed9t \u0111\u1ea7u ren c\u00e1i, cho ph\u00e9p k\u1ebft n\u1ed1i ch\u1eafc ch\u1eafn v\u00e0 \u0111\u1ecbnh v\u1ecb ch\u00ednh x\u00e1c trong c\u00e1c c\u1ee5m l\u1eafp r\u00e1p. M\u1eb7c d\u00f9 ph\u1ed5 bi\u1ebfn, m\u1ed9t c\u00e2u h\u1ecfi quan tr\u1ecdng \u0111\u1eb7t ra l\u00e0: ti\u00eau chu\u1ea9n qu\u1ed1c gia (GB) cho lo\u1ea1i \u1ed1c v\u00edt n\u00e0y \u1edf Trung Qu\u1ed1c l\u00e0 g\u00ec? B\u00e0i vi\u1ebft n\u00e0y s\u1ebd \u0111i s\u00e2u v\u00e0o ch\u1ee7 \u0111\u1ec1 n\u00e0y, n\u00eau b\u1eadt b\u1ed1i c\u1ea3nh ti\u00eau chu\u1ea9n h\u00f3a hi\u1ec7n t\u1ea1i, c\u00e1c th\u1ef1c ti\u1ec5n trong ng\u00e0nh v\u00e0 h\u01b0\u1edbng d\u1eabn th\u1ef1c ti\u1ec5n cho c\u00e1c k\u1ef9 s\u01b0 v\u00e0 nh\u00e0 s\u1ea3n xu\u1ea5t. D\u1ef1a tr\u00ean c\u00e1c nguy\u00ean t\u1eafc k\u1ef9 thu\u1eadt c\u01a1 kh\u00ed \u0111\u00e3 \u0111\u01b0\u1ee3c thi\u1ebft l\u1eadp v\u00e0 c\u00e1c chu\u1ea9n m\u1ef1c qu\u1ed1c t\u1ebf t\u01b0\u01a1ng \u0111\u01b0\u01a1ng, ch\u00fang t\u00f4i cung c\u1ea5p m\u1ed9t c\u00e1i nh\u00ecn t\u1ed5ng quan to\u00e0n di\u1ec7n \u0111\u1ec3 h\u1ed7 tr\u1ee3 trong thi\u1ebft k\u1ebf, l\u1ef1a ch\u1ecdn v\u00e0 \u1ee9ng d\u1ee5ng. M\u1eb7c d\u00f9 kh\u00f4ng c\u00f3 ti\u00eau chu\u1ea9n GB ch\u00ednh th\u1ee9c n\u00e0o d\u00e0nh ri\u00eang cho \u1ed1c v\u00edt \u0111\u1ef1c-c\u00e1i, vi\u1ec7c hi\u1ec3u c\u00e1c ti\u00eau chu\u1ea9n t\u01b0\u01a1ng t\u1ef1 v\u00e0 c\u00e1c th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt n\u1ed9i b\u1ed9 \u0111\u1ea3m b\u1ea3o tu\u00e2n th\u1ee7 c\u00e1c y\u00eau c\u1ea7u v\u1ec1 ch\u1ea5t l\u01b0\u1ee3ng v\u00e0 an to\u00e0n trong m\u00f4i tr\u01b0\u1eddng chuy\u00ean nghi\u1ec7p.<\/p>\n

Vi\u1ec7c thi\u1ebfu m\u1ed9t ti\u00eau chu\u1ea9n qu\u1ed1c gia chuy\u00ean d\u1ee5ng kh\u00f4ng l\u00e0m gi\u1ea3m t\u1ea7m quan tr\u1ecdng c\u1ee7a c\u00e1c lo\u1ea1i \u1ed1c v\u00edt n\u00e0y. Thay v\u00e0o \u0111\u00f3, n\u00f3 nh\u1ea5n m\u1ea1nh s\u1ef1 ph\u1ee5 thu\u1ed9c v\u00e0o c\u00e1c h\u01b0\u1edbng d\u1eabn c\u1ee5 th\u1ec3 c\u1ee7a doanh nghi\u1ec7p ho\u1eb7c s\u1ef1 \u0111\u1ed3ng thu\u1eadn c\u1ee7a ng\u00e0nh, th\u01b0\u1eddng ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c ti\u00eau chu\u1ea9n \u1ed1c v\u00edt r\u1ed9ng h\u01a1n nh\u01b0 GB\/T 5782 cho bu l\u00f4ng l\u1ee5c gi\u00e1c ho\u1eb7c c\u00e1c ti\u00eau chu\u1ea9n t\u01b0\u01a1ng \u0111\u01b0\u01a1ng ISO 4014. H\u01b0\u1edbng d\u1eabn n\u00e0y nh\u1eb1m m\u1ee5c \u0111\u00edch thu h\u1eb9p kho\u1ea3ng c\u00e1ch \u0111\u00f3 b\u1eb1ng c\u00e1ch cung c\u1ea5p nh\u1eefng hi\u1ec3u bi\u1ebft chi ti\u1ebft, c\u00e1c khuy\u1ebfn ngh\u1ecb v\u1ec1 k\u00edch th\u01b0\u1edbc v\u00e0 c\u00e1c chi\u1ebfn l\u01b0\u1ee3c t\u1ed1i \u01b0u h\u00f3a, cho ph\u00e9p ng\u01b0\u1eddi d\u00f9ng \u0111\u1ea1t \u0111\u01b0\u1ee3c hi\u1ec7u su\u1ea5t \u0111\u00e1ng tin c\u1eady trong c\u00e1c \u1ee9ng d\u1ee5ng \u0111a d\u1ea1ng.<\/p>\n<\/section>\n

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T\u00ecm hi\u1ec3u v\u1ec1 \u1ed1c v\u00edt \u0111\u1ef1c-c\u00e1i<\/h2>\n

\u1ed0c v\u00edt \u0111\u1ef1c-c\u00e1i, c\u00f2n \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 tr\u1ee5 \u0111\u1ee1 ho\u1eb7c mi\u1ebfng \u0111\u1ec7m ren, bao g\u1ed3m m\u1ed9t th\u00e2n h\u00ecnh tr\u1ee5 v\u1edbi ren ngo\u00e0i \u1edf m\u1ed9t \u0111\u1ea7u (\u0111\u1ea7u \u0111\u1ef1c) v\u00e0 ren trong \u1edf \u0111\u1ea7u kia (\u0111\u1ea7u c\u00e1i). Thi\u1ebft k\u1ebf n\u00e0y gi\u00fap vi\u1ec7c x\u1ebfp ch\u1ed3ng, \u0111\u1ecbnh kho\u1ea3ng c\u00e1ch v\u00e0 c\u1ed1 \u0111\u1ecbnh c\u00e1c linh ki\u1ec7n d\u1ec5 d\u00e0ng h\u01a1n, \u0111\u1eb7c bi\u1ec7t l\u00e0 trong c\u00e1c b\u1ea3ng m\u1ea1ch in (PCB), v\u1ecf h\u1ed9p v\u00e0 c\u00e1c c\u1ee5m k\u1ebft c\u1ea5u. V\u1eadt li\u1ec7u th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng bao g\u1ed3m th\u00e9p carbon, th\u00e9p kh\u00f4ng g\u1ec9 (v\u00ed d\u1ee5: SUS304), \u0111\u1ed3ng thau ho\u1eb7c nh\u00f4m, \u0111\u01b0\u1ee3c l\u1ef1a ch\u1ecdn d\u1ef1a tr\u00ean c\u00e1c y\u1ebfu t\u1ed1 m\u00f4i tr\u01b0\u1eddng nh\u01b0 kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n ho\u1eb7c \u0111\u1ed9 d\u1eabn \u0111i\u1ec7n. V\u00ed d\u1ee5, c\u00e1c lo\u1ea1i \u0111\u1ed3ng thau \u0111\u01b0\u1ee3c \u01b0a chu\u1ed9ng trong ng\u00e0nh \u0111i\u1ec7n t\u1eed v\u00ec \u0111\u1eb7c t\u00ednh kh\u00f4ng t\u1eeb t\u00ednh v\u00e0 d\u1ec5 gia c\u00f4ng.<\/p>\n

V\u1ec1 m\u1eb7t ch\u1ee9c n\u0103ng, c\u00e1c lo\u1ea1i v\u00edt n\u00e0y cho ph\u00e9p \u0111i\u1ec1u ch\u1ec9nh chi\u1ec1u cao v\u00e0 l\u1eafp \u0111\u1eb7t ch\u1eafc ch\u1eafn m\u00e0 kh\u00f4ng c\u1ea7n th\u00eam \u0111ai \u1ed1c ho\u1eb7c bu l\u00f4ng, gi\u1ea3m \u0111\u1ed9 ph\u1ee9c t\u1ea1p khi l\u1eafp r\u00e1p. C\u00e1c d\u00f2ng v\u00edt th\u00f4ng d\u1ee5ng bao g\u1ed3m M3, M4 v\u00e0 M6, v\u1edbi th\u00e2n h\u00ecnh l\u1ee5c gi\u00e1c gi\u00fap t\u0103ng c\u01b0\u1eddng l\u1ef1c si\u1ebft trong qu\u00e1 tr\u00ecnh l\u1eafp \u0111\u1eb7t. Bi\u1ebfn th\u1ec3 tr\u1ee5 c\u00e1ch ly h\u00ecnh l\u1ee5c gi\u00e1c, th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong v\u1ecf m\u00e1y t\u00ednh, l\u00e0 m\u1ed9t v\u00ed d\u1ee5 \u0111i\u1ec3n h\u00ecnh v\u1edbi kh\u1ea3 n\u0103ng b\u00e1m ch\u1eafc v\u00e0 c\u0103n ch\u1ec9nh t\u1ed1t. Hi\u1ec3u r\u00f5 b\u01b0\u1edbc ren, chi\u1ec1u d\u00e0i v\u00e0 \u0111\u01b0\u1eddng k\u00ednh l\u00e0 r\u1ea5t quan tr\u1ecdng, v\u00ec s\u1ef1 kh\u00f4ng kh\u1edbp c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn h\u1ecfng h\u00f3c c\u01a1 h\u1ecdc ho\u1eb7c k\u00e9m hi\u1ec7u qu\u1ea3 trong qu\u00e1 tr\u00ecnh l\u1eafp r\u00e1p. T\u01b0\u01a1ng t\u1ef1 nh\u01b0 c\u00e1c \u0111inh t\u00e1n hai \u0111\u1ea7u trong ti\u00eau chu\u1ea9n GB\/T 901, v\u00edt \u0111\u1ef1c-c\u00e1i m\u1edf r\u1ed9ng kh\u00e1i ni\u1ec7m n\u00e0y cho c\u00e1c nhu c\u1ea7u kho\u1ea3ng c\u00e1ch chuy\u00ean bi\u1ec7t.<\/p>\n

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  • C\u00e1c bi\u1ebfn th\u1ec3 thi\u1ebft k\u1ebf:<\/strong> Bao g\u1ed3m c\u00e1c tr\u1ee5 n\u1ed1i \u0111\u01a1n \u0111\u1ea7u \u0111\u1ef1c-c\u00e1i, hai \u0111\u1ea7u c\u00e1i ho\u1eb7c tr\u1ee5 h\u00ecnh l\u1ee5c gi\u00e1c \u0111\u1ec3 \u0111\u00e1p \u1ee9ng c\u00e1c y\u00eau c\u1ea7u m\u00f4-men xo\u1eafn c\u1ee5 th\u1ec3.<\/li>\n
  • L\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u:<\/strong> Th\u00e9p kh\u00f4ng g\u1ec9 th\u00edch h\u1ee3p cho m\u00f4i tr\u01b0\u1eddng d\u1ec5 b\u1ecb \u0103n m\u00f2n; nh\u00f4m th\u00edch h\u1ee3p cho c\u00e1c \u1ee9ng d\u1ee5ng c\u1ea7n tr\u1ecdng l\u01b0\u1ee3ng nh\u1eb9.<\/li>\n
  • C\u00e1c ch\u1ec9 s\u1ed1 hi\u1ec7u su\u1ea5t:<\/strong> \u0110\u1ed9 b\u1ec1n k\u00e9o th\u01b0\u1eddng n\u1eb1m trong kho\u1ea3ng 400-800 MPa, t\u00f9y thu\u1ed9c v\u00e0o m\u00e1c th\u00e9p, ph\u00f9 h\u1ee3p v\u1edbi ti\u00eau chu\u1ea9n GB\/T 3098.6 d\u00e0nh cho c\u00e1c lo\u1ea1i \u1ed1c v\u00edt t\u01b0\u01a1ng t\u1ef1.<\/li>\n
  • Quy tr\u00ecnh s\u1ea3n xu\u1ea5t:<\/strong> Gia c\u00f4ng ti\u1ec7n CNC, ti\u1ec7n ren v\u00e0 x\u1eed l\u00fd b\u1ec1 m\u1eb7t nh\u01b0 th\u1ee5 \u0111\u1ed9ng h\u00f3a \u0111\u1ec3 t\u0103ng \u0111\u1ed9 b\u1ec1n.<\/li>\n<\/ul>\n

    C\u00e1c chuy\u00ean gia c\u1ea7n xem x\u00e9t kh\u1ea3 n\u0103ng ch\u1ecbu t\u1ea3i, kh\u1ea3 n\u0103ng ch\u1ed1ng rung v\u00e0 s\u1ef1 gi\u00e3n n\u1edf nhi\u1ec7t khi t\u00edch h\u1ee3p c\u00e1c y\u1ebfu t\u1ed1 n\u00e0y v\u00e0o thi\u1ebft k\u1ebf. V\u00ed d\u1ee5, trong m\u00f4i tr\u01b0\u1eddng c\u00f3 \u0111\u1ed9 rung cao nh\u01b0 thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed \u00f4 t\u00f4, c\u00e1c h\u1ee3p ch\u1ea5t kh\u00f3a ho\u1eb7c m\u1eb7t b\u00edch c\u00f3 r\u0103ng c\u01b0a c\u00f3 th\u1ec3 ng\u0103n ng\u1eeba hi\u1ec7n t\u01b0\u1ee3ng n\u1edbi l\u1ecfng.<\/p>\n<\/section>\n

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    Thi\u1ebfu ti\u00eau chu\u1ea9n qu\u1ed1c gia<\/h2>\n

    T\u1ea1i Trung Qu\u1ed1c, theo c\u00e1c s\u1ed1 li\u1ec7u hi\u1ec7n c\u00f3, \u1ed1c v\u00edt \u0111\u1ef1c-c\u00e1i hi\u1ec7n ch\u01b0a c\u00f3 ti\u00eau chu\u1ea9n qu\u1ed1c gia (GB) ri\u00eang. Kho\u1ea3ng tr\u1ed1ng trong ti\u00eau chu\u1ea9n h\u00f3a n\u00e0y r\u1ea5t \u0111\u00e1ng ch\u00fa \u00fd do ch\u00fang \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong ng\u00e0nh \u0111i\u1ec7n t\u1eed v\u00e0 m\u00e1y m\u00f3c. Kh\u00f4ng gi\u1ed1ng nh\u01b0 c\u00e1c lo\u1ea1i \u1ed1c v\u00edt ti\u00eau chu\u1ea9n kh\u00e1c nh\u01b0 bu l\u00f4ng l\u1ee5c gi\u00e1c (GB\/T 5783) ho\u1eb7c \u0111ai \u1ed1c (GB\/T 6170), c\u00e1c lo\u1ea1i \u1ed1c v\u00edt chuy\u00ean d\u1ee5ng n\u00e0y thu\u1ed9c ti\u00eau chu\u1ea9n ri\u00eang ho\u1eb7c ti\u00eau chu\u1ea9n doanh nghi\u1ec7p. C\u1ee5c Ti\u00eau chu\u1ea9n h\u00f3a Trung Qu\u1ed1c (SAC) ch\u01b0a ban h\u00e0nh m\u00e3 GB c\u1ee5 th\u1ec3 cho \u201c\u1ed1c v\u00edt \u0111\u1ef1c-c\u00e1i\u201d, d\u1eabn \u0111\u1ebfn vi\u1ec7c c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t ph\u1ea3i d\u1ef1a v\u00e0o c\u00e1c quy tr\u00ecnh n\u1ed9i b\u1ed9 ho\u1eb7c tham kh\u1ea3o c\u00e1c ti\u00eau chu\u1ea9n qu\u1ed1c t\u1ebf t\u01b0\u01a1ng \u0111\u01b0\u01a1ng nh\u01b0 ISO 4026 cho \u1ed1c v\u00edt \u0111\u1ecbnh v\u1ecb ho\u1eb7c DIN 913 cho c\u00e1c b\u1ed9 ph\u1eadn c\u00f3 ren t\u01b0\u01a1ng t\u1ef1.<\/p>\n

    S\u1ef1 thi\u1ebfu v\u1eafng n\u00e0y c\u00f3 th\u1ec3 g\u00e2y ra nh\u1eefng th\u00e1ch th\u1ee9c \u0111\u1ed1i v\u1edbi vi\u1ec7c \u0111\u1ea3m b\u1ea3o ch\u1ea5t l\u01b0\u1ee3ng v\u00e0 kh\u1ea3 n\u0103ng thay th\u1ebf l\u1eabn nhau. V\u00ed d\u1ee5, n\u1ebfu kh\u00f4ng c\u00f3 ti\u00eau chu\u1ea9n GB th\u1ed1ng nh\u1ea5t, k\u00edch th\u01b0\u1edbc s\u1ebd kh\u00e1c nhau gi\u1eefa c\u00e1c nh\u00e0 cung c\u1ea5p, c\u00f3 kh\u1ea3 n\u0103ng g\u00e2y ra c\u00e1c v\u1ea5n \u0111\u1ec1 v\u1ec1 kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch trong chu\u1ed7i cung \u1ee9ng to\u00e0n c\u1ea7u. Nh\u1eefng n\u1ed7 l\u1ef1c \u0111\u1ec1 xu\u1ea5t ti\u00eau chu\u1ea9n, ch\u1eb3ng h\u1ea1n nh\u01b0 c\u00e1c \u0111\u1ec1 xu\u1ea5t g\u1eedi \u0111\u1ebfn Vi\u1ec7n Ti\u00eau chu\u1ea9n h\u00f3a C\u00f4ng nghi\u1ec7p C\u01a1 kh\u00ed Trung Qu\u1ed1c, v\u1eabn ch\u01b0a \u0111\u01b0\u1ee3c th\u00f4ng qua ch\u00ednh th\u1ee9c. Tuy nhi\u00ean, c\u00e1c ti\u00eau chu\u1ea9n li\u00ean quan nh\u01b0 GB\/T 119 cho ch\u1ed1t ho\u1eb7c GB\/T 15389 cho v\u00f2ng \u0111\u1ec7m cung c\u1ea5p h\u01b0\u1edbng d\u1eabn gi\u00e1n ti\u1ebfp v\u1ec1 dung sai v\u00e0 v\u1eadt li\u1ec7u. C\u00e1c k\u1ef9 s\u01b0 \u0111\u01b0\u1ee3c khuy\u1ebfn c\u00e1o n\u00ean ch\u1ec9 \u0111\u1ecbnh c\u00e1c y\u00eau c\u1ea7u t\u00f9y ch\u1ec9nh trong b\u1ea3n v\u1ebd, k\u1ebft h\u1ee3p dung sai theo GB\/T 1804 (dung sai chung) \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 ch\u00ednh x\u00e1c.<\/p>\n

    \u0110\u1ec3 gi\u1ea3m thi\u1ec3u r\u1ee7i ro, h\u00e3y \u0111\u1ed1i chi\u1ebfu v\u1edbi ti\u00eau chu\u1ea9n ASTM F835 cho th\u00e9p h\u1ee3p kim ho\u1eb7c ti\u00eau chu\u1ea9n JIS B 1177 c\u1ee7a Nh\u1eadt B\u1ea3n, v\u1ed1n cung c\u1ea5p khung k\u00edch th\u01b0\u1edbc t\u01b0\u01a1ng t\u1ef1. C\u00e1ch ti\u1ebfp c\u1eadn n\u00e0y duy tr\u00ec \u0111\u1ed9 tin c\u1eady cho \u0111\u1ebfn khi m\u1ed9t ti\u00eau chu\u1ea9n GB ch\u00ednh th\u1ee9c \u0111\u01b0\u1ee3c thi\u1ebft l\u1eadp, nh\u1ea5n m\u1ea1nh s\u1ef1 c\u1ea7n thi\u1ebft c\u1ee7a vi\u1ec7c v\u1eadn \u0111\u1ed9ng ch\u00ednh s\u00e1ch t\u1eeb ng\u00e0nh c\u00f4ng nghi\u1ec7p trong c\u00e1c quy tr\u00ecnh ti\u00eau chu\u1ea9n h\u00f3a.<\/p>\n<\/section>\n

    \n

    C\u00e1c quy t\u1eafc \u1ee9ng x\u1eed trong ng\u00e0nh v\u00e0 ti\u00eau chu\u1ea9n n\u1ed9i b\u1ed9<\/h2>\n

    Trong tr\u01b0\u1eddng h\u1ee3p kh\u00f4ng c\u00f3 ti\u00eau chu\u1ea9n qu\u1ed1c gia, c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t s\u1ebd ph\u00e1t tri\u1ec3n c\u00e1c th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt n\u1ed9i b\u1ed9 ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c \u1ee9ng d\u1ee5ng ph\u1ed5 bi\u1ebfn. Nh\u1eefng th\u00f4ng s\u1ed1 n\u00e0y th\u01b0\u1eddng d\u1ef1a tr\u00ean c\u00e1c thi\u1ebft k\u1ebf \u0111\u00e3 \u0111\u01b0\u1ee3c ch\u1ee9ng minh, \u0111\u1ea3m b\u1ea3o t\u00ednh nh\u1ea5t qu\u00e1n trong s\u1ea3n xu\u1ea5t. \u0110\u1ed1i v\u1edbi v\u00edt \u0111\u1ef1c-c\u00e1i, c\u00e1c ti\u00eau chu\u1ea9n n\u1ed9i b\u1ed9 th\u01b0\u1eddng x\u00e1c \u0111\u1ecbnh c\u00e1c th\u00f4ng s\u1ed1 nh\u01b0 k\u00edch th\u01b0\u1edbc ren, chi\u1ec1u r\u1ed9ng l\u1ee5c gi\u00e1c, chi\u1ec1u d\u00e0i t\u1ed5ng th\u1ec3 v\u00e0 c\u1ea5p v\u1eadt li\u1ec7u. V\u00ed d\u1ee5, m\u1ed9t lo\u1ea1i v\u00edt M3 th\u00f4ng d\u1ee5ng c\u00f3 th\u1ec3 quy \u0111\u1ecbnh chi\u1ec1u r\u1ed9ng l\u1ee5c gi\u00e1c l\u00e0 5 mm, chi\u1ec1u d\u00e0i t\u1eeb 6 mm \u0111\u1ebfn 50 mm v\u00e0 b\u01b0\u1edbc ren l\u00e0 0,5 mm. C\u00e1c ti\u00eau chu\u1ea9n nh\u01b0 v\u1eady ph\u00f9 h\u1ee3p v\u1edbi ti\u00eau chu\u1ea9n GB\/T 3098.1 r\u1ed9ng h\u01a1n v\u1ec1 t\u00ednh ch\u1ea5t c\u01a1 h\u1ecdc, \u0111\u1ea3m b\u1ea3o v\u00edt \u0111\u00e1p \u1ee9ng c\u00e1c y\u00eau c\u1ea7u v\u1ec1 \u0111\u1ed9 b\u1ec1n k\u00e9o v\u00e0 \u0111\u1ed9 b\u1ec1n c\u1eaft t\u1ed1i thi\u1ec3u.<\/p>\n

    C\u00e1c ti\u00eau chu\u1ea9n ng\u00e0nh nh\u1ea5n m\u1ea1nh vi\u1ec7c ki\u1ec3m so\u00e1t ch\u1ea5t l\u01b0\u1ee3ng th\u00f4ng qua ch\u1ee9ng nh\u1eadn ISO 9001, bao g\u1ed3m th\u1eed nghi\u1ec7m v\u1eadt li\u1ec7u theo ti\u00eau chu\u1ea9n GB\/T 228 v\u1ec1 t\u00ednh ch\u1ea5t k\u00e9o v\u00e0 ki\u1ec3m tra \u0111\u1ed9 ho\u00e0n thi\u1ec7n b\u1ec1 m\u1eb7t. C\u00e1c ti\u00eau chu\u1ea9n t\u00f9y ch\u1ec9nh c\u00f3 th\u1ec3 bao g\u1ed3m c\u00e1c t\u00ednh n\u0103ng ch\u1ed1ng n\u1edbi l\u1ecfng nh\u01b0 mi\u1ebfng v\u00e1 nylon, tu\u00e2n th\u1ee7 ti\u00eau chu\u1ea9n GB\/T 889.1. C\u00e1c chuy\u00ean gia n\u00ean y\u00eau c\u1ea7u c\u00e1c ti\u00eau chu\u1ea9n c\u1ee5 th\u1ec3 c\u1ee7a nh\u00e0 cung c\u1ea5p trong qu\u00e1 tr\u00ecnh mua s\u1eafm, x\u00e1c minh th\u00f4ng qua c\u00e1c nguy\u00ean m\u1eabu \u0111\u1ec3 tr\u00e1nh s\u1ef1 kh\u00f4ng ph\u00f9 h\u1ee3p. Th\u1ef1c ti\u1ec5n n\u00e0y th\u00fac \u0111\u1ea9y s\u1ef1 \u0111\u1ed5i m\u1edbi, cho ph\u00e9p \u0111i\u1ec1u ch\u1ec9nh cho c\u00e1c l\u0129nh v\u1ef1c c\u1ee5 th\u1ec3 nh\u01b0 vi\u1ec5n th\u00f4ng, n\u01a1i kh\u1ea3 n\u0103ng ch\u1eafn nhi\u1ec5u \u0111i\u1ec7n t\u1eeb (EMI) l\u00e0 r\u1ea5t quan tr\u1ecdng.<\/p>\n

      \n
    1. Ki\u1ec3m tra v\u1eadt li\u1ec7u:<\/strong> S\u1eed d\u1ee5ng ph\u01b0\u01a1ng ph\u00e1p \u0111o quang ph\u1ed5 \u0111\u1ec3 x\u00e1c nh\u1eadn th\u00e0nh ph\u1ea7n h\u1ee3p kim, theo ti\u00eau chu\u1ea9n GB\/T 11170.<\/li>\n
    2. Ki\u1ec3m tra k\u00edch th\u01b0\u1edbc:<\/strong> S\u1eed d\u1ee5ng th\u01b0\u1edbc k\u1eb9p v\u00e0 th\u01b0\u1edbc \u0111o c\u00f3 dung sai \u00b10,05 mm cho c\u00e1c chi ti\u1ebft quan tr\u1ecdng.<\/li>\n
    3. Ki\u1ec3m th\u1eed hi\u1ec7u n\u0103ng:<\/strong> Ti\u1ebfn h\u00e0nh ki\u1ec3m tra m\u00f4-men xo\u1eafn \u1edf m\u1ee9c 2-5 Nm, t\u00f9y thu\u1ed9c v\u00e0o k\u00edch th\u01b0\u1edbc, \u0111\u1ec3 m\u00f4 ph\u1ecfng \u0111i\u1ec1u ki\u1ec7n l\u1eafp r\u00e1p.<\/li>\n
    4. T\u00e0i li\u1ec7u:<\/strong> Duy tr\u00ec h\u1ed3 s\u01a1 truy xu\u1ea5t ngu\u1ed3n g\u1ed1c, bao g\u1ed3m s\u1ed1 l\u00f4 v\u00e0 b\u00e1o c\u00e1o th\u1eed nghi\u1ec7m.<\/li>\n<\/ol>\n

      B\u1eb1ng c\u00e1ch \u00e1p d\u1ee5ng nh\u1eefng ph\u01b0\u01a1ng ph\u00e1p n\u00e0y, c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t \u0111\u1ea3m b\u1ea3o s\u1ea3n ph\u1ea9m ho\u1ea1t \u0111\u1ed9ng \u0111\u00e1ng tin c\u1eady, ngay c\u1ea3 khi kh\u00f4ng c\u00f3 ti\u00eau chu\u1ea9n GB ch\u00ednh th\u1ee9c.<\/p>\n<\/section>\n

      \n

      Th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt v\u00e0 k\u00edch th\u01b0\u1edbc<\/h2>\n

      M\u1eb7c d\u00f9 kh\u00f4ng c\u00f3 ti\u00eau chu\u1ea9n GB ch\u00ednh th\u1ee9c n\u00e0o, nh\u01b0ng c\u00e1c th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt \u0111i\u1ec3n h\u00ecnh cho \u1ed1c v\u00edt \u0111\u1ef1c-c\u00e1i d\u1ef1a tr\u00ean c\u00e1c k\u00edch th\u01b0\u1edbc th\u00f4ng d\u1ee5ng trong ng\u00e0nh. B\u1ea3ng sau \u0111\u00e2y cung c\u1ea5p c\u00e1c k\u00edch th\u01b0\u1edbc m\u1eabu cho c\u00e1c d\u00f2ng t\u1eeb M3 \u0111\u1ebfn M10, bao g\u1ed3m chi\u1ec1u r\u1ed9ng l\u1ee5c gi\u00e1c, chi\u1ec1u d\u00e0i v\u00e0 chi ti\u1ebft ren. C\u00e1c th\u00f4ng s\u1ed1 n\u00e0y \u0111\u01b0\u1ee3c l\u1ea5y t\u1eeb c\u00e1c th\u1ef1c ti\u1ec5n ph\u1ed5 bi\u1ebfn v\u00e0 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c d\u00f9ng l\u00e0m t\u00e0i li\u1ec7u tham kh\u1ea3o, nh\u01b0ng lu\u00f4n lu\u00f4n x\u00e1c nh\u1eadn v\u1edbi nh\u00e0 cung c\u1ea5p \u0111\u1ec3 bi\u1ebft c\u00e1c ti\u00eau chu\u1ea9n n\u1ed9i b\u1ed9 ch\u00ednh x\u00e1c.<\/p>\n

      \n\n\n\n\n\n\n\n\n\n\n
      K\u00edch th\u01b0\u1edbc s\u1ee3i<\/th>\nChi\u1ec1u r\u1ed9ng l\u1ee5c gi\u00e1c (mm)<\/th>\nChi\u1ec1u d\u00e0i ren ngo\u00e0i (mm)<\/th>\n\u0110\u1ed9 s\u00e2u ren trong (mm)<\/th>\nKho\u1ea3ng chi\u1ec1u d\u00e0i t\u1ed5ng th\u1ec3 (mm)<\/th>\nC\u00e1c t\u00f9y ch\u1ecdn v\u1eadt li\u1ec7u<\/th>\n<\/tr>\n<\/thead>\n
      M3 x 0.5<\/td>\n5<\/td>\n6-10<\/td>\n8-12<\/td>\n10-50<\/td>\nTh\u00e9p, \u0110\u1ed3ng thau, SS304<\/td>\n<\/tr>\n
      M4 x 0.7<\/td>\n6<\/td>\n8-12<\/td>\n10-15<\/td>\n15-60<\/td>\nNh\u00f4m, SS316<\/td>\n<\/tr>\n
      M5 x 0.8<\/td>\n8<\/td>\n10-15<\/td>\n12-18<\/td>\n20-70<\/td>\nTh\u00e9p, ph\u1ee7 nylon<\/td>\n<\/tr>\n
      M6 x 1.0<\/td>\n10<\/td>\n12-18<\/td>\n15-20<\/td>\n25-80<\/td>\n\u0110\u1ed3ng thau, th\u00e9p m\u1ea1 k\u1ebdm<\/td>\n<\/tr>\n
      M8 x 1.25<\/td>\n12<\/td>\n15-20<\/td>\n18-25<\/td>\n30-100<\/td>\nSS304, Nh\u00f4m<\/td>\n<\/tr>\n
      M10 x 1.5<\/td>\n15<\/td>\n18-25<\/td>\n20-30<\/td>\n40-120<\/td>\nTh\u00e9p, SS316<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

      L\u01b0u \u00fd: K\u00edch th\u01b0\u1edbc ch\u1ec9 mang t\u00ednh ch\u1ea5t \u01b0\u1edbc l\u01b0\u1ee3ng v\u00e0 d\u1ef1a tr\u00ean c\u00e1c ti\u00eau chu\u1ea9n n\u1ed9i b\u1ed9 th\u00f4ng d\u1ee5ng trong ng\u00e0nh. Sai s\u1ed1 th\u01b0\u1eddng tu\u00e2n theo ti\u00eau chu\u1ea9n GB\/T 197 (\u00b10,1 mm \u0111\u1ed1i v\u1edbi chi\u1ec1u d\u00e0i d\u01b0\u1edbi 50 mm). C\u00f3 th\u1ec3 t\u00f9y ch\u1ec9nh theo nhu c\u1ea7u c\u1ee5 th\u1ec3.<\/p>\n

      C\u00e1c th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt n\u00e0y \u0111\u1ea3m b\u1ea3o t\u00ednh t\u01b0\u01a1ng th\u00edch trong c\u00e1c c\u1ee5m l\u1eafp r\u00e1p. \u0110\u1ed1i v\u1edbi c\u00e1c tr\u1ee5 c\u00e1ch ly h\u00ecnh l\u1ee5c gi\u00e1c, chi\u1ec1u r\u1ed9ng c\u1ee7a l\u1ee5c gi\u00e1c cung c\u1ea5p b\u1ec1 m\u1eb7t \u0111\u1ec3 v\u1eb7n, trong khi chi\u1ec1u d\u00e0i ren cho ph\u00e9p x\u1ebfp ch\u1ed3ng. C\u00e1c bi\u1ebfn th\u1ec3 c\u00f3 hai \u0111\u1ea7u n\u1ed1i c\u00e1i mang l\u1ea1i s\u1ef1 linh ho\u1ea1t cho c\u00e1c ph\u1ea7n m\u1edf r\u1ed9ng, v\u1edbi \u0111\u1ed9 s\u00e2u \u0111\u1ea3m b\u1ea3o s\u1ef1 \u0103n kh\u1edbp ho\u00e0n to\u00e0n theo ti\u00eau chu\u1ea9n ren GB\/T 196.<\/p>\n<\/section>\n

      \n

      \u1ee8ng d\u1ee5ng v\u00e0 c\u00e1c ph\u01b0\u01a1ng ph\u00e1p th\u1ef1c h\u00e0nh t\u1ed1t nh\u1ea5t<\/h2>\n

      \u1ed0c v\u00edt \u0111\u1ef1c-c\u00e1i l\u00e0 th\u00e0nh ph\u1ea7n kh\u00f4ng th\u1ec3 thi\u1ebfu trong ng\u00e0nh \u0111i\u1ec7n t\u1eed, d\u00f9ng \u0111\u1ec3 c\u1ed1 \u0111\u1ecbnh c\u00e1c t\u1ea5m m\u1ea1ch in (PCB), ng\u0103n ng\u1eeba \u0111o\u1ea3n m\u1ea1ch v\u00e0 cho ph\u00e9p lu\u1ed3ng kh\u00f4ng kh\u00ed l\u01b0u th\u00f4ng. Trong s\u1ea3n xu\u1ea5t khung g\u1ea7m, ch\u00fang gi\u00fap c\u1ed1 \u0111\u1ecbnh c\u00e1c t\u1ea5m v\u1edbi kho\u1ea3ng c\u00e1ch ch\u00ednh x\u00e1c, t\u0103ng c\u01b0\u1eddng \u0111\u1ed9 b\u1ec1n c\u1ea5u tr\u00fac. \u1ee8ng d\u1ee5ng trong \u00f4 t\u00f4 s\u1eed d\u1ee5ng ch\u00fang \u0111\u1ec3 g\u1eafn c\u1ea3m bi\u1ebfn, n\u01a1i kh\u1ea3 n\u0103ng ch\u1ed1ng rung l\u00e0 y\u1ebfu t\u1ed1 quan tr\u1ecdng. C\u00e1c bi\u1ec7n ph\u00e1p t\u1ed1t nh\u1ea5t bao g\u1ed3m l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u ph\u00f9 h\u1ee3p v\u1edbi \u0111i\u1ec1u ki\u1ec7n m\u00f4i tr\u01b0\u1eddng\u2014v\u00ed d\u1ee5: th\u00e9p kh\u00f4ng g\u1ec9 SS316 cho m\u00f4i tr\u01b0\u1eddng \u1ea9m \u01b0\u1edbt theo th\u1eed nghi\u1ec7m \u0103n m\u00f2n GB\/T 1031. Vi\u1ec7c l\u1eafp \u0111\u1eb7t c\u1ea7n ki\u1ec3m so\u00e1t m\u00f4-men xo\u1eafn (v\u00ed d\u1ee5: 1-3 Nm cho M3) \u0111\u1ec3 tr\u00e1nh l\u00e0m h\u1ecfng ren, s\u1eed d\u1ee5ng c\u00e1c d\u1ee5ng c\u1ee5 tu\u00e2n th\u1ee7 GB\/T 6063.<\/p>\n

      \u0110\u1ec3 \u0111\u1ea1t hi\u1ec7u su\u1ea5t t\u1ed1i \u01b0u, h\u00e3y ti\u1ebfn h\u00e0nh ph\u00e2n t\u00edch ph\u1ea7n t\u1eed h\u1eefu h\u1ea1n (FEA) \u0111\u1ec3 m\u00f4 ph\u1ecfng t\u1ea3i tr\u1ecdng, \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 b\u1ec1n c\u1eaft v\u01b0\u1ee3t qu\u00e1 y\u00eau c\u1ea7u \u1ee9ng d\u1ee5ng. Trong c\u00e1c l\u0129nh v\u1ef1c \u0111\u00f2i h\u1ecfi \u0111\u1ed9 ch\u00ednh x\u00e1c cao nh\u01b0 h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5, h\u00e3y tu\u00e2n th\u1ee7 ti\u00eau chu\u1ea9n GB\/T 16938 \u0111\u1ed1i v\u1edbi c\u00e1c lo\u1ea1i \u1ed1c v\u00edt th\u00f4ng th\u01b0\u1eddng. Vi\u1ec7c b\u1ea3o tr\u00ec bao g\u1ed3m ki\u1ec3m tra \u0111\u1ecbnh k\u1ef3 \u0111\u1ed9 m\u00e0i m\u00f2n, thay th\u1ebf n\u1ebfu \u0111\u1ed9 gi\u00e3n d\u00e0i v\u01b0\u1ee3t qu\u00e1 5%. Nh\u1eefng th\u1ef1c h\u00e0nh n\u00e0y, d\u1ef1a tr\u00ean c\u00e1c ti\u00eau chu\u1ea9n k\u1ef9 thu\u1eadt c\u01a1 kh\u00ed, gi\u00fap t\u1ed1i \u0111a h\u00f3a \u0111\u1ed9 tin c\u1eady v\u00e0 tu\u1ed5i th\u1ecd.<\/p>\n

        \n
      • \u0110i\u1ec7n t\u1eed:<\/strong> N\u00ean b\u1ed1 tr\u00ed c\u00e1c m\u1ea1ch in (PCB) c\u00e1ch nhau 10-20 mm \u0111\u1ec3 t\u1ea3n nhi\u1ec7t t\u1ed1t.<\/li>\n
      • M\u00e1y m\u00f3c:<\/strong> C\u1ed1 \u0111\u1ecbnh c\u00e1c n\u1eafp b\u1eb1ng v\u00edt M6 \u0111\u1ec3 d\u1ec5 d\u00e0ng ti\u1ebfp c\u1eadn.<\/li>\n
      • T\u00f9y ch\u1ec9nh:<\/strong> M\u1ea1 anod nh\u00f4m \u0111\u1ec3 m\u00e3 h\u00f3a m\u00e0u s\u1eafc trong c\u00e1c c\u1ee5m l\u1eafp r\u00e1p.<\/li>\n
      • S\u1ef1 an to\u00e0n:<\/strong> Tr\u00e1nh qu\u00e1 t\u1ea3i; t\u00ednh to\u00e1n d\u1ef1a tr\u00ean c\u00e1c v\u00f9ng ch\u1ecbu \u1ee9ng su\u1ea5t theo ti\u00eau chu\u1ea9n GB\/T 16823.<\/li>\n<\/ul>\n

        B\u1eb1ng c\u00e1ch tu\u00e2n theo c\u00e1c h\u01b0\u1edbng d\u1eabn n\u00e0y, ng\u01b0\u1eddi d\u00f9ng c\u00f3 th\u1ec3 t\u00edch h\u1ee3p c\u00e1c lo\u1ea1i v\u00edt \u0111\u1ef1c-c\u00e1i m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3, b\u00f9 \u0111\u1eafp cho vi\u1ec7c thi\u1ebfu ti\u00eau chu\u1ea9n GB ch\u00ednh th\u1ee9c th\u00f4ng qua c\u00e1c ph\u01b0\u01a1ng ph\u00e1p k\u1ef9 thu\u1eadt nghi\u00eam ng\u1eb7t.<\/p>\n<\/section>\n

        \n

        C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p<\/h2>\n
        \n
        C\u00f3 ti\u00eau chu\u1ea9n ch\u00ednh th\u1ee9c n\u00e0o c\u1ee7a Anh Qu\u1ed1c d\u00e0nh cho \u1ed1c v\u00edt \u0111\u1ef1c-c\u00e1i kh\u00f4ng?<\/dt>\n
        Kh\u00f4ng, hi\u1ec7n t\u1ea1i \u1edf Trung Qu\u1ed1c kh\u00f4ng c\u00f3 ti\u00eau chu\u1ea9n qu\u1ed1c gia (GB) ri\u00eang cho \u1ed1c v\u00edt \u0111\u1ef1c-c\u00e1i; c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t thay v\u00e0o \u0111\u00f3 s\u1eed d\u1ee5ng c\u00e1c h\u01b0\u1edbng d\u1eabn n\u1ed9i b\u1ed9 ho\u1eb7c h\u01b0\u1edbng d\u1eabn ri\u00eang c\u1ee7a ng\u00e0nh.<\/dd>\n

         <\/p>\n

        C\u00e1c lo\u1ea1i \u1ed1c v\u00edt \u0111\u1ef1c-c\u00e1i th\u01b0\u1eddng c\u00f3 k\u00edch th\u01b0\u1edbc n\u00e0o?<\/dt>\n
        C\u00e1c k\u00edch th\u01b0\u1edbc th\u00f4ng d\u1ee5ng bao g\u1ed3m M3 v\u1edbi chi\u1ec1u r\u1ed9ng l\u1ee5c gi\u00e1c 5 mm v\u00e0 chi\u1ec1u d\u00e0i t\u1eeb 10-50 mm; lu\u00f4n lu\u00f4n ch\u1ec9 \u0111\u1ecbnh d\u1ef1a tr\u00ean nhu c\u1ea7u \u1ee9ng d\u1ee5ng v\u00e0 x\u00e1c minh v\u1edbi ti\u00eau chu\u1ea9n c\u1ee7a nh\u00e0 cung c\u1ea5p.<\/dd>\n

         <\/p>\n

        T\u00f4i n\u00ean ch\u1ecdn v\u1eadt li\u1ec7u nh\u01b0 th\u1ebf n\u00e0o cho \u1ed1c v\u00edt \u0111\u1ef1c-c\u00e1i?<\/dt>\n
        Ch\u1ecdn th\u00e9p kh\u00f4ng g\u1ec9 \u0111\u1ec3 ch\u1ed1ng \u0103n m\u00f2n, \u0111\u1ed3ng thau \u0111\u1ec3 d\u1eabn \u0111i\u1ec7n trong l\u0129nh v\u1ef1c \u0111i\u1ec7n t\u1eed, ho\u1eb7c th\u00e9p \u0111\u1ec3 ti\u1ebft ki\u1ec7m chi ph\u00ed, ph\u00f9 h\u1ee3p v\u1edbi ti\u00eau chu\u1ea9n m\u00e1c v\u1eadt li\u1ec7u GB\/T 699.<\/dd>\n

         <\/p>\n

        N\u00ean \u00e1p d\u1ee5ng dung sai n\u00e0o khi kh\u00f4ng c\u00f3 ti\u00eau chu\u1ea9n GB?<\/dt>\n
        S\u1eed d\u1ee5ng dung sai chung t\u1eeb ti\u00eau chu\u1ea9n GB\/T 1804, ch\u1eb3ng h\u1ea1n nh\u01b0 \u00b10,05 mm cho ren ch\u00ednh x\u00e1c, v\u00e0 th\u1ef1c hi\u1ec7n ki\u1ec3m tra ch\u1ea5t l\u01b0\u1ee3ng theo quy tr\u00ecnh ISO 9001.<\/dd>\n

         <\/p>\n

        C\u00f3 th\u1ec3 s\u1eed d\u1ee5ng \u1ed1c v\u00edt \u0111\u1ef1c-c\u00e1i trong m\u00f4i tr\u01b0\u1eddng c\u00f3 \u0111\u1ed9 rung cao kh\u00f4ng?<\/dt>\n
        V\u00e2ng, v\u1edbi c\u00e1c t\u00ednh n\u0103ng kh\u00f3a nh\u01b0 mi\u1ebfng ch\u00e8n nylon theo ti\u00eau chu\u1ea9n GB\/T 889; ki\u1ec3m tra \u0111\u1ed9 c\u1ed9ng h\u01b0\u1edfng b\u1eb1ng ti\u00eau chu\u1ea9n rung \u0111\u1ed9ng GB\/T 11348 \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o t\u00ednh \u1ed5n \u0111\u1ecbnh.<\/dd>\n

         <\/p>\n

        L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o kh\u1ea3 n\u0103ng thay th\u1ebf l\u1eabn nhau m\u00e0 kh\u00f4ng c\u1ea7n ti\u00eau chu\u1ea9n qu\u1ed1c gia?<\/dt>\n
        Ghi r\u00f5 k\u00edch th\u01b0\u1edbc trong b\u1ea3n v\u1ebd k\u1ef9 thu\u1eadt, tham kh\u1ea3o c\u00e1c ti\u00eau chu\u1ea9n qu\u1ed1c t\u1ebf nh\u01b0 ISO 4026 v\u00e0 ti\u1ebfn h\u00e0nh th\u1eed nghi\u1ec7m nguy\u00ean m\u1eabu \u0111\u1ec3 ki\u1ec3m tra \u0111\u1ed9 ph\u00f9 h\u1ee3p v\u00e0 ch\u1ee9c n\u0103ng.<\/dd>\n

         \n<\/dl>\n<\/section>\n

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

        Gi\u1edbi thi\u1ec7u \u1ed0c v\u00edt \u0111\u1ef1c-c\u00e1i l\u00e0 lo\u1ea1i \u1ed1c v\u00edt \u0111a n\u0103ng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong c\u00e1c ng\u00e0nh c\u00f4ng nghi\u1ec7p nh\u01b0 \u0111i\u1ec7n t\u1eed, l\u1eafp r\u00e1p khung g\u1ea7m v\u00e0 m\u00e1y m\u00f3c. C\u00e1c b\u1ed9 ph\u1eadn n\u00e0y c\u00f3 m\u1ed9t \u0111\u1ea7u ren \u0111\u1ef1c v\u00e0 m\u1ed9t \u0111\u1ea7u ren c\u00e1i, cho ph\u00e9p k\u1ebft n\u1ed1i ch\u1eafc ch\u1eafn v\u00e0 \u0111\u1ecbnh v\u1ecb ch\u00ednh x\u00e1c trong c\u00e1c c\u1ee5m l\u1eafp r\u00e1p. M\u1eb7c d\u00f9 ph\u1ed5 bi\u1ebfn, m\u1ed9t c\u00e2u h\u1ecfi quan tr\u1ecdng \u0111\u1eb7t ra l\u00e0: ti\u00eau chu\u1ea9n qu\u1ed1c gia (GB) cho lo\u1ea1i \u1ed1c v\u00edt n\u00e0y \u1edf Trung Qu\u1ed1c l\u00e0 g\u00ec? [\u2026]<\/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-5857","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\/5857","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=5857"}],"version-history":[{"count":2,"href":"https:\/\/korea-transmission.com\/vi\/wp-json\/wp\/v2\/posts\/5857\/revisions"}],"predecessor-version":[{"id":5859,"href":"https:\/\/korea-transmission.com\/vi\/wp-json\/wp\/v2\/posts\/5857\/revisions\/5859"}],"wp:attachment":[{"href":"https:\/\/korea-transmission.com\/vi\/wp-json\/wp\/v2\/media?parent=5857"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/korea-transmission.com\/vi\/wp-json\/wp\/v2\/categories?post=5857"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/korea-transmission.com\/vi\/wp-json\/wp\/v2\/tags?post=5857"}],"curies":[{"name":"trang web","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}