{"id":5812,"date":"2025-12-25T01:55:36","date_gmt":"2025-12-25T01:55:36","guid":{"rendered":"https:\/\/korea-transmission.com\/?p=5812"},"modified":"2025-12-25T01:55:56","modified_gmt":"2025-12-25T01:55:56","slug":"embedded-brass-nut-installation-problems-fixes","status":"publish","type":"post","link":"https:\/\/korea-transmission.com\/vi\/blog\/embedded-brass-nut-installation-problems-fixes\/","title":{"rendered":"C\u00e1c v\u1ea5n \u0111\u1ec1 v\u00e0 c\u00e1ch kh\u1eafc ph\u1ee5c khi l\u1eafp \u0111\u1eb7t \u0111ai \u1ed1c b\u1eb1ng \u0111\u1ed3ng thau \u00e2m t\u01b0\u1eddng"},"content":{"rendered":"

Gi\u1edbi thi\u1ec7u<\/h2>\n
\n

\u0110ai \u1ed1c b\u1eb1ng \u0111\u1ed3ng thau d\u1ea1ng ch\u00ecm, c\u00f2n \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 \u0111ai \u1ed1c ch\u00e8n, \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong \u00e9p phun nh\u1ef1a \u0111\u1ec3 t\u1ea1o ra c\u00e1c m\u1ed1i n\u1ed1i ren ch\u1eafc ch\u1eafn v\u00e0 c\u00f3 th\u1ec3 t\u00e1i s\u1eed d\u1ee5ng. C\u00e1c \u0111ai \u1ed1c n\u00e0y th\u01b0\u1eddng \u0111\u01b0\u1ee3c ch\u00e8n v\u00e0o c\u00e1c g\u1edd ho\u1eb7c tr\u1ee5 nh\u1ef1a trong ho\u1eb7c sau qu\u00e1 tr\u00ecnh \u00e9p khu\u00f4n. Tuy nhi\u00ean, c\u00e1c v\u1ea5n \u0111\u1ec1 nh\u01b0 ph\u1ed3ng r\u1ed9p, n\u1ee9t v\u1ee1, l\u1ef1c k\u00e9o ho\u1eb7c m\u00f4-men xo\u1eafn th\u1ea5p, l\u1ec7ch tr\u1ee5c, ch\u00e1y b\u1ec1 m\u1eb7t v\u00e0 bavia c\u00f3 th\u1ec3 ph\u00e1t sinh do t\u00ednh ch\u1ea5t v\u1eadt li\u1ec7u, l\u1ed7i thi\u1ebft k\u1ebf ho\u1eb7c th\u00f4ng s\u1ed1 quy tr\u00ecnh. B\u00e0i vi\u1ebft n\u00e0y n\u00eau ra nh\u1eefng v\u1ea5n \u0111\u1ec1 n\u00e0y v\u00e0 \u0111\u01b0a ra c\u00e1c gi\u1ea3i ph\u00e1p \u0111\u00e3 \u0111\u01b0\u1ee3c ch\u1ee9ng minh d\u1ef1a tr\u00ean c\u00e1c nguy\u00ean t\u1eafc k\u1ef9 thu\u1eadt c\u01a1 kh\u00ed, nh\u1ea5n m\u1ea1nh v\u00e0o vi\u1ec7c t\u1ed1i \u01b0u h\u00f3a c\u1ea5u tr\u00fac v\u00e0 xem x\u00e9t v\u1eadt li\u1ec7u \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c c\u00e1c c\u1ee5m l\u1eafp r\u00e1p ch\u1ea5t l\u01b0\u1ee3ng cao v\u00e0 b\u1ec1n b\u1ec9.<\/p>\n

Tu\u00e2n th\u1ee7 c\u00e1c ti\u00eau chu\u1ea9n nh\u01b0 ISO 965 v\u1ec1 ren v\u00e0 ASTM D638 v\u1ec1 th\u1eed nghi\u1ec7m \u0111\u1ed9 b\u1ec1n k\u00e9o \u0111\u1ea3m b\u1ea3o c\u00e1c thi\u1ebft b\u1ecb l\u1eafp \u0111\u1eb7t \u0111\u00e1p \u1ee9ng y\u00eau c\u1ea7u c\u1ee7a ng\u00e0nh. X\u1eed l\u00fd \u0111\u00fang c\u00e1ch c\u00e1c v\u1ea5n \u0111\u1ec1 n\u00e0y kh\u00f4ng ch\u1ec9 ng\u0103n ng\u1eeba h\u1ecfng h\u00f3c m\u00e0 c\u00f2n t\u0103ng tu\u1ed5i th\u1ecd s\u1ea3n ph\u1ea9m trong c\u00e1c \u1ee9ng d\u1ee5ng t\u1eeb thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed ti\u00eau d\u00f9ng \u0111\u1ebfn ph\u1ee5 t\u00f9ng \u00f4 t\u00f4.<\/p>\n<\/div>\n

\u0110\u1ec1 c\u01b0\u01a1ng b\u00e0i vi\u1ebft<\/h2>\n
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    \n
  1. C\u00e1c v\u1ea5n \u0111\u1ec1 th\u01b0\u1eddng g\u1eb7p khi l\u1eafp \u0111\u1eb7t v\u1eadt li\u1ec7u nh\u00fang trong nh\u1ef1a<\/li>\n
  2. Chi\u1ebfn l\u01b0\u1ee3c t\u1ed1i \u01b0u h\u00f3a c\u1ea5u tr\u00fac<\/li>\n
  3. Y\u00eau c\u1ea7u \u0111\u1ed1i v\u1edbi l\u1ed7 b\u1eaft v\u00edt b\u1eb1ng nh\u1ef1a<\/li>\n
  4. C\u00e1c v\u1ea5n \u0111\u1ec1 n\u1ee9t v\u1ee1 \u1edf nh\u1ef1a PC v\u00e0 nh\u1ef1a gia c\u01b0\u1eddng s\u1ee3i th\u1ee7y tinh<\/li>\n
  5. C\u00e1c gi\u1ea3i ph\u00e1p ph\u00f2ng ng\u1eeba n\u1ee9t v\u1ee1<\/li>\n
  6. Ki\u1ec3m th\u1eed v\u00e0 \u0110\u1ea3m b\u1ea3o ch\u1ea5t l\u01b0\u1ee3ng<\/li>\n
  7. C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p<\/li>\n<\/ol>\n

    B\u1ea3n t\u00f3m t\u1eaft n\u00e0y c\u1ea5u tr\u00fac cu\u1ed9c th\u1ea3o lu\u1eadn theo tr\u00ecnh t\u1ef1 logic, t\u1eeb vi\u1ec7c x\u00e1c \u0111\u1ecbnh v\u1ea5n \u0111\u1ec1 \u0111\u1ebfn vi\u1ec7c tri\u1ec3n khai th\u1ef1c ti\u1ec5n, \u0111\u1ea3m b\u1ea3o ng\u01b0\u1eddi \u0111\u1ecdc c\u00f3 th\u1ec3 \u00e1p d\u1ee5ng h\u01b0\u1edbng d\u1eabn m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3 trong quy tr\u00ecnh l\u00e0m vi\u1ec7c k\u1ef9 thu\u1eadt c\u1ee7a h\u1ecd.<\/p>\n<\/div>\n

    C\u00e1c v\u1ea5n \u0111\u1ec1 th\u01b0\u1eddng g\u1eb7p khi l\u1eafp \u0111\u1eb7t v\u1eadt li\u1ec7u nh\u00fang trong nh\u1ef1a<\/h2>\n
    \n

    Trong qu\u00e1 tr\u00ecnh \u00e9p phun nh\u1ef1a v\u1edbi c\u00e1c \u0111ai \u1ed1c b\u1eb1ng \u0111\u1ed3ng thau \u0111\u01b0\u1ee3c nh\u00fang b\u00ean trong, m\u1ed9t s\u1ed1 v\u1ea5n \u0111\u1ec1 th\u01b0\u1eddng xuy\u00ean x\u1ea3y ra, \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn \u0111\u1ed9 b\u1ec1n v\u00e0 ch\u1ee9c n\u0103ng c\u1ee7a s\u1ea3n ph\u1ea9m cu\u1ed1i c\u00f9ng. Ch\u00fang bao g\u1ed3m ph\u1ed3ng g\u1edd, n\u1ee9t, l\u1ef1c k\u00e9o v\u00e0 m\u00f4-men xo\u1eafn th\u1ea5p, l\u1eafp \u0111\u1eb7t kh\u00f4ng ho\u00e0n ch\u1ec9nh, ch\u00e1y b\u1ec1 m\u1eb7t v\u00e0 tr\u00e0n bavia. M\u1eb7c d\u00f9 m\u1ed9t s\u1ed1 v\u1ea5n \u0111\u1ec1 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c gi\u1ea3m thi\u1ec3u th\u00f4ng qua \u0111i\u1ec1u ch\u1ec9nh quy tr\u00ecnh nh\u01b0 nhi\u1ec7t \u0111\u1ed9, \u00e1p su\u1ea5t ho\u1eb7c th\u1eddi gian chu k\u1ef3, nh\u01b0ng m\u1ed9t s\u1ed1 v\u1ea5n \u0111\u1ec1 kh\u00e1c \u0111\u00f2i h\u1ecfi nh\u1eefng thay \u0111\u1ed5i thi\u1ebft k\u1ebf c\u01a1 b\u1ea3n \u0111\u1ec3 gi\u1ea3i quy\u1ebft tri\u1ec7t \u0111\u1ec3.<\/p>\n

    V\u00ed d\u1ee5, hi\u1ec7n t\u01b0\u1ee3ng ph\u1ed3ng r\u1ed9p v\u00e0 n\u1ee9t n\u1ebb th\u01b0\u1eddng b\u1eaft ngu\u1ed3n t\u1eeb s\u1ef1 gi\u00e3n n\u1edf nhi\u1ec7t kh\u00f4ng ph\u00f9 h\u1ee3p gi\u1eefa \u0111ai \u1ed1c b\u1eb1ng \u0111\u1ed3ng thau v\u00e0 nh\u1ef1a, d\u1eabn \u0111\u1ebfn s\u1ef1 t\u1eadp trung \u1ee9ng su\u1ea5t. L\u1ef1c k\u00e9o ra th\u1ea5p cho th\u1ea5y s\u1ef1 li\u00ean k\u1ebft kh\u00f4ng \u0111\u1ee7 ho\u1eb7c \u0111\u1ed9 s\u00e2u r\u00e3nh kh\u00eda kh\u00f4ng \u0111\u1ee7, l\u00e0m gi\u1ea3m s\u1ef1 \u0103n kh\u1edbp c\u01a1 h\u1ecdc. Hi\u1ec7n t\u01b0\u1ee3ng ch\u00e1y b\u1ec1 m\u1eb7t l\u00e0 do nhi\u1ec7t \u0111\u1ed9 qu\u00e1 cao trong qu\u00e1 tr\u00ecnh l\u1eafp \u0111\u1eb7t, trong khi hi\u1ec7n t\u01b0\u1ee3ng bavia x\u1ea3y ra do k\u00edch th\u01b0\u1edbc l\u1ed7 ho\u1eb7c k\u00edch th\u01b0\u1edbc \u0111ai \u1ed1c kh\u00f4ng ph\u00f9 h\u1ee3p.<\/p>\n

    Hi\u1ec3u r\u00f5 nh\u1eefng v\u1ea5n \u0111\u1ec1 n\u00e0y l\u00e0 \u0111i\u1ec1u v\u00f4 c\u00f9ng quan tr\u1ecdng \u0111\u1ed1i v\u1edbi c\u00e1c k\u1ef9 s\u01b0 \u0111\u1ec3 l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u v\u00e0 thi\u1ebft k\u1ebf ph\u00f9 h\u1ee3p, \u0111\u1ea3m b\u1ea3o tu\u00e2n th\u1ee7 c\u00e1c ti\u00eau chu\u1ea9n c\u01a1 kh\u00ed v\u00e0 ng\u0103n ng\u1eeba s\u1ef1 c\u1ed1 trong qu\u00e1 tr\u00ecnh s\u1eed d\u1ee5ng.<\/p>\n<\/div>\n

    Chi\u1ebfn l\u01b0\u1ee3c t\u1ed1i \u01b0u h\u00f3a c\u1ea5u tr\u00fac<\/h2>\n
    \n

    \u0110\u1ec3 gi\u1ea3i quy\u1ebft c\u00e1c v\u1ea5n \u0111\u1ec1 dai d\u1eb3ng nh\u01b0 ph\u1ed3ng r\u1ed9p, n\u1ee9t v\u1ee1 v\u00e0 l\u1ef1c k\u00e9o ra y\u1ebfu, vi\u1ec7c t\u1ed1i \u01b0u h\u00f3a thi\u1ebft k\u1ebf c\u1ea5u tr\u00fac c\u1ee7a c\u1ea3 \u0111ai \u1ed1c v\u00e0 ph\u1ea7n nh\u00f4 ra b\u1eb1ng nh\u1ef1a l\u00e0 r\u1ea5t c\u1ea7n thi\u1ebft. C\u00e1c chi\u1ebfn l\u01b0\u1ee3c sau \u0111\u00e2y \u0111\u01b0\u1ee3c r\u00fat ra t\u1eeb kinh nghi\u1ec7m k\u1ef9 thu\u1eadt th\u1ef1c ti\u1ec5n v\u00e0 ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c th\u1ef1c ti\u1ec5n t\u1ed1t nh\u1ea5t trong thi\u1ebft k\u1ebf c\u00e1c b\u1ed9 ph\u1eadn b\u1eb1ng nh\u1ef1a.<\/p>\n

    T\u1ed1i \u01b0u h\u00f3a cho hi\u1ec7n t\u01b0\u1ee3ng ph\u1ed3ng v\u00e0 n\u1ee9t<\/h3>\n
      \n
    • T\u0103ng \u0111\u01b0\u1eddng k\u00ednh l\u1ed7 l\u1eafp ph\u00f4i \u0111\u1ec3 gi\u1ea3m \u00e1p l\u1ef1c khi l\u1eafp v\u00e0 gi\u1ea3m thi\u1ec3u \u1ee9ng su\u1ea5t xuy\u00ean t\u00e2m.<\/li>\n
    • Gi\u1ea3m \u0111\u01b0\u1eddng k\u00ednh ngo\u00e0i v\u00e0 chi\u1ec1u d\u00e0i c\u1ee7a \u0111ai \u1ed1c xu\u1ed1ng k\u00edch th\u01b0\u1edbc ph\u00f9 h\u1ee3p, c\u00e2n b\u1eb1ng gi\u1eefa \u0111\u1ed9 b\u1ec1n v\u00e0 \u0111\u1ed9 d\u1ec5 l\u1eafp \u0111\u1eb7t.<\/li>\n
    • M\u1edf r\u1ed9ng \u0111\u01b0\u1eddng k\u00ednh ngo\u00e0i c\u1ee7a ph\u1ea7n nh\u00f4 ra \u0111\u1ec3 t\u0103ng c\u01b0\u1eddng \u0111\u1ed9 ch\u1eafc ch\u1eafn c\u1ee7a v\u1eadt li\u1ec7u v\u00e0 ph\u00e2n b\u1ed1 \u1ee9ng su\u1ea5t \u0111\u1ed3ng \u0111\u1ec1u h\u01a1n.<\/li>\n
    • L\u00e0m s\u00e2u th\u00eam c\u00e1c \u0111\u01b0\u1eddng kh\u00eda ho\u1eb7c k\u1ebft c\u1ea5u h\u00e0n b\u00ean ngo\u00e0i c\u1ee7a \u0111ai \u1ed1c \u0111\u1ec3 t\u0103ng c\u01b0\u1eddng \u0111\u1ed9 b\u00e1m c\u01a1 h\u1ecdc v\u00e0 kh\u1ea3 n\u0103ng t\u1ea3n nhi\u1ec7t trong qu\u00e1 tr\u00ecnh l\u1eafp \u0111\u1eb7t.<\/li>\n<\/ul>\n

      T\u1ed1i \u01b0u h\u00f3a \u0111\u1ec3 gi\u1ea3m l\u1ef1c k\u00e9o ra v\u00e0 m\u00f4-men xo\u1eafn.<\/h3>\n
        \n
      • L\u00e0m s\u00e2u th\u00eam ph\u1ea7n kh\u00eda b\u00ean ngo\u00e0i \u0111\u1ec3 t\u0103ng \u0111\u1ed9 b\u00e1m d\u00ednh v\u1edbi nh\u1ef1a.<\/li>\n
      • Thay \u0111\u1ed5i h\u01b0\u1edbng kh\u00eda (v\u00ed d\u1ee5: t\u1eeb h\u01b0\u1edbng tr\u1ee5c sang h\u01b0\u1edbng xo\u1eafn \u1ed1c) \u0111\u1ec3 t\u0103ng kh\u1ea3 n\u0103ng ch\u1ed1ng l\u1ea1i l\u1ef1c xoay.<\/li>\n
      • T\u0103ng ho\u1eb7c l\u00e0m s\u00e2u th\u00eam c\u00e1c r\u00e3nh ch\u1ed1ng k\u00e9o tr\u00ean \u0111ai \u1ed1c \u0111\u1ec3 t\u1ea1o th\u00eam \u0111i\u1ec3m neo gi\u1eef.<\/li>\n<\/ul>\n

        C\u00e1c t\u1ed1i \u01b0u h\u00f3a n\u00e0y c\u1ea7n \u0111\u01b0\u1ee3c ki\u1ec3m ch\u1ee9ng th\u00f4ng qua ph\u00e2n t\u00edch ph\u1ea7n t\u1eed h\u1eefu h\u1ea1n (FEA) \u0111\u1ec3 d\u1ef1 \u0111o\u00e1n s\u1ef1 ph\u00e2n b\u1ed1 \u1ee9ng su\u1ea5t v\u00e0 \u0111\u1ea3m b\u1ea3o thi\u1ebft k\u1ebf ch\u1ecbu \u0111\u01b0\u1ee3c t\u1ea3i tr\u1ecdng v\u1eadn h\u00e0nh m\u00e0 kh\u00f4ng \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn t\u00ednh to\u00e0n v\u1eb9n c\u1ee7a nh\u1ef1a.<\/p>\n<\/div>\n

        Y\u00eau c\u1ea7u \u0111\u1ed1i v\u1edbi l\u1ed7 b\u1eaft v\u00edt b\u1eb1ng nh\u1ef1a<\/h2>\n
        \n

        Thi\u1ebft k\u1ebf l\u1ed7 \u0111\u1ecbnh h\u00ecnh b\u1eb1ng nh\u1ef1a r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 vi\u1ec7c l\u1eafp \u0111\u1eb7t \u0111ai \u1ed1c th\u00e0nh c\u00f4ng. C\u00e1c h\u01b0\u1edbng d\u1eabn ti\u00eau chu\u1ea9n khuy\u1ebfn ngh\u1ecb c\u00e1c th\u00f4ng s\u1ed1 sau \u0111\u1ec3 ng\u0103n ng\u1eeba tr\u00e0n, l\u1eafp \u0111\u1eb7t kh\u00f4ng ho\u00e0n ch\u1ec9nh v\u00e0 c\u00e1c \u0111i\u1ec3m y\u1ebfu v\u1ec1 c\u1ea5u tr\u00fac:<\/p>\n

          \n
        • \u0110\u01b0\u1eddng k\u00ednh l\u1ed7 b\u00ean trong n\u00ean nh\u1ecf h\u01a1n \u0111\u01b0\u1eddng k\u00ednh ngo\u00e0i t\u1ed1i \u0111a c\u1ee7a \u0111ai \u1ed1c kho\u1ea3ng 0,25 mm \u0111\u1ebfn 0,3 mm \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 kh\u00edt.<\/li>\n
        • C\u1ea7n c\u00f3 \u0111\u1ed9 s\u00e2u t\u1ed1i thi\u1ec3u 0,5 mm b\u00ean d\u01b0\u1edbi m\u1eb7t \u0111\u00e1y c\u1ee7a \u0111ai \u1ed1c \u0111\u1ec3 khoang ch\u1ee9a nh\u1ef1a c\u00f3 \u0111\u1ee7 kh\u00f4ng gian cho d\u00f2ng ch\u1ea3y v\u1eadt li\u1ec7u.<\/li>\n
        • \u0110\u1ed1i v\u1edbi \u0111ai \u1ed1c c\u00f3 k\u00edch th\u01b0\u1edbc M1.4 tr\u1edf l\u00ean, c\u1ea7n duy tr\u00ec \u0111\u1ed9 d\u00e0y th\u00e0nh g\u1edd t\u1ed1i thi\u1ec3u 1.0 mm \u0111\u1ec3 ch\u1ecbu \u0111\u01b0\u1ee3c t\u1ea3i tr\u1ecdng m\u00e0 kh\u00f4ng b\u1ecb bi\u1ebfn d\u1ea1ng.<\/li>\n
        • Thi\u1ebft k\u1ebf l\u1ed7 c\u00f3 h\u00ecnh d\u1ea1ng thu\u00f4n d\u1ea7n (l\u1edbn h\u01a1n \u1edf ph\u00eda tr\u00ean, nh\u1ecf h\u01a1n \u1edf ph\u00eda d\u01b0\u1edbi) v\u1edbi g\u00f3c nghi\u00eang t\u1eeb 0,5\u00b0 \u0111\u1ebfn 2\u00b0 \u0111\u1ec3 d\u1ec5 d\u00e0ng t\u00e1ch khu\u00f4n.<\/li>\n
        • T\u00ednh \u0111\u1ebfn s\u1ef1 co ng\u00f3t c\u1ee7a nh\u1ef1a trong thi\u1ebft k\u1ebf khu\u00f4n; \u0111\u01b0\u1eddng k\u00ednh l\u1ed7 n\u00ean d\u1ef1a tr\u00ean gi\u1edbi h\u1ea1n d\u01b0\u1edbi sau khi \u0111\u00fac \u0111\u1ec3 tr\u00e1nh t\u00ecnh tr\u1ea1ng l\u1ed7 nh\u1ecf h\u01a1n k\u00edch th\u01b0\u1edbc chu\u1ea9n v\u00e0 hi\u1ec7n t\u01b0\u1ee3ng bavia sau \u0111\u00f3.<\/li>\n<\/ul>\n

          C\u00e1c th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt n\u00e0y ph\u00f9 h\u1ee3p v\u1edbi ti\u00eau chu\u1ea9n \u00e9p phun v\u00e0 gi\u00fap \u0111\u1ea1t \u0111\u01b0\u1ee3c c\u00e1c m\u1ed1i n\u1ed1i c\u00f3 \u0111\u1ed9 b\u1ec1n cao v\u00e0 \u0111\u1ed3ng nh\u1ea5t. Lu\u00f4n lu\u00f4n xem x\u00e9t t\u1ef7 l\u1ec7 co ng\u00f3t c\u1ee7a nh\u1ef1a (th\u01b0\u1eddng l\u00e0 0,5-2% \u0111\u1ed1i v\u1edbi c\u00e1c lo\u1ea1i nh\u1ef1a nhi\u1ec7t d\u1ebbo th\u00f4ng th\u01b0\u1eddng) khi t\u00ednh to\u00e1n \u0111\u01b0\u1eddng k\u00ednh ch\u1ed1t trong khu\u00f4n.<\/p>\n<\/div>\n

          C\u00e1c v\u1ea5n \u0111\u1ec1 n\u1ee9t v\u1ee1 \u1edf nh\u1ef1a PC v\u00e0 nh\u1ef1a gia c\u01b0\u1eddng s\u1ee3i th\u1ee7y tinh<\/h2>\n
          \n

          Nh\u1ef1a polycarbonate (PC) v\u00e0 nh\u1ef1a gia c\u01b0\u1eddng s\u1ee3i th\u1ee7y tinh (v\u00ed d\u1ee5: nylon v\u1edbi s\u1ee3i th\u1ee7y tinh) \u0111\u1eb7t ra nh\u1eefng th\u00e1ch th\u1ee9c ri\u00eang bi\u1ec7t do t\u00ednh ch\u1ea5t v\u1eadt li\u1ec7u c\u1ee7a ch\u00fang. PC l\u00e0 m\u1ed9t lo\u1ea1i nh\u1ef1a nhi\u1ec7t d\u1ebbo kh\u00f4ng k\u1ebft tinh v\u1edbi \u0111\u1ed9 b\u1ec1n c\u01a1 h\u1ecdc tuy\u1ec7t v\u1eddi nh\u01b0ng kh\u1ea3 n\u0103ng ch\u1ea3y k\u00e9m, kh\u1ea3 n\u0103ng gi\u1eef \u1ee9ng su\u1ea5t cao v\u00e0 \u0111\u1ed9 co ng\u00f3t th\u1ea5p. Khi nh\u00fang c\u00e1c \u0111ai \u1ed1c b\u1eb1ng \u0111\u1ed3ng thau, s\u1ef1 kh\u00f4ng ph\u00f9 h\u1ee3p v\u1ec1 nhi\u1ec7t d\u1eabn \u0111\u1ebfn \u1ee9ng su\u1ea5t t\u1ea1i giao di\u1ec7n, g\u00e2y ra c\u00e1c v\u1ebft n\u1ee9t trong qu\u00e1 tr\u00ecnh l\u00e0m ngu\u1ed9i ho\u1eb7c theo th\u1eddi gian.<\/p>\n

          Trong c\u00e1c v\u1eadt li\u1ec7u gia c\u01b0\u1eddng b\u1eb1ng s\u1ee3i th\u1ee7y tinh, c\u00e1c ch\u1ea5t ph\u1ee5 gia nh\u01b0 s\u1ee3i, ch\u1ea5t l\u00e0m t\u0103ng \u0111\u1ed9 b\u1ec1n ho\u1eb7c kho\u00e1ng ch\u1ea5t l\u00e0m t\u0103ng s\u1ef1 t\u1eadp trung \u1ee9ng su\u1ea5t. Hi\u1ec7n t\u01b0\u1ee3ng n\u1ee9t th\u01b0\u1eddng b\u1eaft \u0111\u1ea7u m\u1ed9t c\u00e1ch \u00e2m th\u1ea7m trong qu\u00e1 tr\u00ecnh l\u00e0m ngu\u1ed9i v\u00e0 tr\u1edf n\u00ean r\u00f5 r\u00e0ng sau v\u00e0i ng\u00e0y do s\u1ef1 gi\u1ea3i ph\u00f3ng \u1ee9ng su\u1ea5t v\u00e0 c\u00e1c y\u1ebfu t\u1ed1 m\u00f4i tr\u01b0\u1eddng. \u0110i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn h\u1ecfng h\u00f3c s\u1ea3n ph\u1ea9m sau khi l\u1eafp r\u00e1p, g\u00e2y ra tranh ch\u1ea5p v\u1ec1 ch\u1ea5t l\u01b0\u1ee3ng.<\/p>\n

          C\u00e1c c\u01a1 ch\u1ebf ch\u00ednh bao g\u1ed3m \u1ee9ng su\u1ea5t nhi\u1ec7t do h\u1ec7 s\u1ed1 gi\u00e3n n\u1edf nhi\u1ec7t kh\u00e1c nhau (CTE: \u0111\u1ed3ng thau ~18 \u00d7 10^{-6}\/K, PC ~70 \u00d7 10^{-6}\/K) v\u00e0 \u1ee9ng su\u1ea5t d\u01b0 do l\u00e0m ngu\u1ed9i nhanh. C\u00e1c k\u1ef9 s\u01b0 ph\u1ea3i gi\u1ea3i quy\u1ebft nh\u1eefng v\u1ea5n \u0111\u1ec1 n\u00e0y th\u00f4ng qua vi\u1ec7c l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u v\u00e0 ki\u1ec3m so\u00e1t quy tr\u00ecnh \u0111\u1ec3 duy tr\u00ec t\u00ednh to\u00e0n v\u1eb9n c\u1ea5u tr\u00fac.<\/p>\n<\/div>\n

          C\u00e1c gi\u1ea3i ph\u00e1p ph\u00f2ng ng\u1eeba n\u1ee9t v\u1ee1<\/h2>\n
          \n

          C\u00e1c gi\u1ea3i ph\u00e1p hi\u1ec7u qu\u1ea3 \u0111\u1ec3 kh\u1eafc ph\u1ee5c hi\u1ec7n t\u01b0\u1ee3ng n\u1ee9t trong nh\u1ef1a PC ho\u1eb7c nh\u1ef1a gia c\u01b0\u1eddng s\u1ee3i th\u1ee7y tinh bao g\u1ed3m gia nhi\u1ec7t s\u01a1 b\u1ed9, l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u v\u00e0 c\u00e1c ph\u01b0\u01a1ng ph\u00e1p ch\u00e8n thay th\u1ebf, d\u1ef1a tr\u00ean c\u00e1c nguy\u00ean t\u1eafc k\u1ef9 thu\u1eadt nhi\u1ec7t v\u00e0 c\u01a1 h\u1ecdc.<\/p>\n

          L\u00e0m n\u00f3ng tr\u01b0\u1edbc h\u1ea1t<\/h3>\n

          L\u00e0m n\u00f3ng tr\u01b0\u1edbc \u0111ai \u1ed1c b\u1eb1ng \u0111\u1ed3ng thau \u0111\u1ebfn 200\u00b0C (g\u1ea7n v\u1edbi nhi\u1ec7t \u0111\u1ed9 n\u00f3ng ch\u1ea3y c\u1ee7a PC l\u00e0 230-300\u00b0C) \u0111\u1ec3 gi\u1ea3m thi\u1ec3u s\u1ed1c nhi\u1ec7t. \u0110i\u1ec1u n\u00e0y gi\u00fap \u0111\u1ed3ng b\u1ed9 h\u00f3a s\u1ef1 gi\u00e3n n\u1edf v\u00e0 co l\u1ea1i, gi\u1ea3m \u1ee9ng su\u1ea5t t\u1ea1i giao di\u1ec7n. S\u1eed d\u1ee5ng d\u1ee5ng c\u1ee5 c\u00e1ch \u0111i\u1ec7n \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o an to\u00e0n.<\/p>\n

          L\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u<\/h3>\n

          N\u00ean ch\u1ecdn \u0111ai \u1ed1c b\u1eb1ng \u0111\u1ed3ng thay v\u00ec th\u00e9p \u0111\u1ec3 c\u00f3 kh\u1ea3 n\u0103ng d\u1eabn nhi\u1ec7t t\u1ed1t h\u01a1n. Gi\u1ea3m h\u00e0m l\u01b0\u1ee3ng PC ho\u1eb7c s\u1eed d\u1ee5ng h\u1ed7n h\u1ee3p (v\u00ed d\u1ee5: 80% PC + 20% ABS) \u0111\u1ec3 gi\u1ea3m nguy c\u01a1 n\u1ee9t.<\/p>\n

          C\u00e1c quy tr\u00ecnh ch\u00e8n thay th\u1ebf<\/h3>\n
            \n
          1. L\u1eafp gh\u00e9p b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p \u00e9p:<\/strong> \u0110\u1ea7u ti\u00ean, t\u1ea1o h\u00ecnh cho nh\u1ef1a, ch\u1edd 1-2 ng\u00e0y \u0111\u1ec3 \u1ed5n \u0111\u1ecbnh, sau \u0111\u00f3 d\u00f9ng m\u00e1y d\u1eadp n\u00f3ng v\u00e0 \u00e9p \u0111ai \u1ed1c v\u00e0o l\u1ed7 \u0111\u00e3 \u0111\u01b0\u1ee3c t\u1ea1o s\u1eb5n.<\/li>\n
          2. T\u1ef1 g\u00f5:<\/strong> Thi\u1ebft k\u1ebf \u0111ai \u1ed1c c\u00f3 g\u00f3c ren s\u1eafc b\u00e9n 15\u00b0 \u0111\u1ec3 v\u1eb7n tr\u1ef1c ti\u1ebfp v\u00e0o l\u1ed7 nh\u1ef1a b\u1eb1ng d\u1ee5ng c\u1ee5 \u0111i\u1ec7n.<\/li>\n
          3. X\u1eed l\u00fd t\u00f4i luy\u1ec7n:<\/strong> Sau khi l\u1eafp \u0111\u1eb7t, nung n\u00f3ng c\u1ee5m chi ti\u1ebft \u0111\u1ebfn 100-120\u00b0C trong 30-120 ph\u00fat, sau \u0111\u00f3 l\u00e0m ngu\u1ed9i b\u1eb1ng kh\u00f4ng kh\u00ed \u0111\u1ec3 gi\u1ea3i ph\u00f3ng \u1ee9ng su\u1ea5t (v\u00ed d\u1ee5: \u0111\u1ed1i v\u1edbi 30% GF PA).<\/li>\n<\/ol>\n

            T\u1ed1i \u01b0u h\u00f3a b\u1ed5 sung<\/h3>\n
              \n
            • Th\u1ef1c hi\u1ec7n l\u00e0m ngu\u1ed9i nhi\u1ec1u giai \u0111o\u1ea1n: C\u00e1ch nhi\u1ec7t \u1edf 100-200\u00b0C trong 1 gi\u1edd sau khi \u0111\u00fac.<\/li>\n
            • S\u1eed d\u1ee5ng ch\u1ea5t k\u1ebft d\u00ednh giao di\u1ec7n (g\u1ed1c n\u01b0\u1edbc, m\u1ed9t th\u00e0nh ph\u1ea7n) \u0111\u1ec3 t\u0103ng c\u01b0\u1eddng \u0111\u1ed9 b\u00e1m d\u00ednh, \u0111\u1ea3m b\u1ea3o kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch v\u1edbi nhi\u1ec7t \u0111\u1ed9 cao.<\/li>\n
            • L\u00e0m s\u1ea1ch b\u1ec1 m\u1eb7t \u0111ai \u1ed1c b\u1eb1ng s\u00f3ng si\u00eau \u00e2m \u0111\u1ec3 lo\u1ea1i b\u1ecf ch\u1ea5t b\u1ea9n v\u00e0 c\u1ea3i thi\u1ec7n \u0111\u1ed9 b\u00e1m d\u00ednh.<\/li>\n<\/ul>\n

              Khi k\u1ebft h\u1ee3p v\u1edbi ph\u00e2n t\u00edch ph\u1ea7n t\u1eed h\u1eefu h\u1ea1n (FEA) v\u00e0 th\u1eed nghi\u1ec7m th\u1ef1c nghi\u1ec7m, c\u00e1c ph\u01b0\u01a1ng ph\u00e1p n\u00e0y \u0111\u1ea3m b\u1ea3o c\u00e1c c\u1ee5m l\u1eafp r\u00e1p ch\u1eafc ch\u1eafn, kh\u00f4ng n\u1ee9t v\u1ee1 v\u00e0 \u0111\u00e1p \u1ee9ng c\u00e1c ti\u00eau chu\u1ea9n \u0111\u1ed9 b\u1ec1n c\u1ee7a ng\u00e0nh.<\/p>\n<\/div>\n

              Ki\u1ec3m th\u1eed v\u00e0 \u0110\u1ea3m b\u1ea3o ch\u1ea5t l\u01b0\u1ee3ng<\/h2>\n
              \n

              \u0110\u1ec3 ki\u1ec3m tra ch\u1ea5t l\u01b0\u1ee3ng l\u1eafp \u0111\u1eb7t, h\u00e3y ti\u1ebfn h\u00e0nh c\u00e1c th\u1eed nghi\u1ec7m theo ti\u00eau chu\u1ea9n nh\u01b0 ASTM D1002 v\u1ec1 \u0111\u1ed9 b\u1ec1n c\u1eaft v\u00e0 ISO 11343 v\u1ec1 l\u1ef1c k\u00e9o. \u0110o l\u1ef1c k\u00e9o b\u1eb1ng m\u00e1y th\u1eed \u0111\u1ed9 b\u1ec1n k\u00e9o, h\u01b0\u1edbng \u0111\u1ebfn c\u00e1c gi\u00e1 tr\u1ecb v\u01b0\u1ee3t qu\u00e1 t\u1ea3i tr\u1ecdng \u1ee9ng d\u1ee5ng (v\u00ed d\u1ee5: >100 N \u0111\u1ed1i v\u1edbi \u0111ai \u1ed1c M3 trong \u1ed1ng PC). Ki\u1ec3m tra m\u00f4-men xo\u1eafn theo ISO 898 \u0111\u1ea3m b\u1ea3o t\u00ednh to\u00e0n v\u1eb9n quay. Ki\u1ec3m tra th\u01b0\u1eddng xuy\u00ean c\u00e1c v\u1ebft n\u1ee9t b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p si\u00eau \u00e2m ho\u1eb7c tr\u1ef1c quan, c\u00f9ng v\u1edbi ki\u1ec3m tra k\u00edch th\u01b0\u1edbc, duy tr\u00ec t\u00ednh nh\u1ea5t qu\u00e1n. Ghi l\u1ea1i k\u1ebft qu\u1ea3 \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o kh\u1ea3 n\u0103ng truy xu\u1ea5t ngu\u1ed3n g\u1ed1c trong c\u00e1c h\u1ec7 th\u1ed1ng qu\u1ea3n l\u00fd ch\u1ea5t l\u01b0\u1ee3ng nh\u01b0 ISO 9001.<\/p>\n<\/div>\n

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

              Nguy\u00ean nh\u00e2n n\u00e0o g\u00e2y ra hi\u1ec7n t\u01b0\u1ee3ng ph\u1ed3ng r\u1ed9p \u1edf c\u00e1c \u0111\u1ea7u n\u1ed1i nh\u1ef1a khi si\u1ebft ch\u1eb7t \u0111ai \u1ed1c?<\/h3>\n

              Hi\u1ec7n t\u01b0\u1ee3ng ph\u1ed3ng r\u1ed9p x\u1ea3y ra do \u00e1p su\u1ea5t xuy\u00ean t\u00e2m qu\u00e1 m\u1ee9c ho\u1eb7c s\u1ef1 kh\u00f4ng ph\u00f9 h\u1ee3p v\u1ec1 gi\u00e3n n\u1edf nhi\u1ec7t. C\u00e1c gi\u1ea3i ph\u00e1p bao g\u1ed3m t\u0103ng \u0111\u01b0\u1eddng k\u00ednh l\u1ed7 v\u00e0 l\u00e0m s\u00e2u th\u00eam ph\u1ea7n kh\u00eda \u0111\u1ec3 ph\u00e2n b\u1ed1 \u1ee9ng su\u1ea5t t\u1ed1t h\u01a1n.<\/p>\n

              L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 c\u1ea3i thi\u1ec7n l\u1ef1c k\u00e9o ra th\u1ea5p \u1edf c\u00e1c lo\u1ea1i \u0111ai \u1ed1c ch\u00ecm?<\/h3>\n

              C\u1ea3i ti\u1ebfn b\u1eb1ng c\u00e1ch l\u00e0m s\u00e2u th\u00eam c\u00e1c r\u00e3nh ch\u1ed1ng k\u00e9o, thay \u0111\u1ed5i ki\u1ec3u v\u00e2n nh\u00e1m v\u00e0 \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 d\u00e0y th\u00e0nh ph\u00f9 h\u1ee3p. Ki\u1ec3m tra theo ti\u00eau chu\u1ea9n ASTM \u0111\u1ec3 x\u00e1c nh\u1eadn s\u1ef1 c\u1ea3i ti\u1ebfn.<\/p>\n

              T\u1ea1i sao v\u1eadt li\u1ec7u PC l\u1ea1i b\u1ecb n\u1ee9t sau khi l\u1eafp \u0111\u1eb7t?<\/h3>\n

              Do hi\u1ec7n t\u01b0\u1ee3ng qu\u00e1 nhi\u1ec7t v\u00e0 kh\u1ea3 n\u0103ng ph\u00e2n t\u00e1n \u1ee9ng su\u1ea5t k\u00e9m trong PC, c\u1ea7n l\u00e0m n\u00f3ng tr\u01b0\u1edbc c\u00e1c \u1ed1c v\u00edt v\u00e0 s\u1eed d\u1ee5ng h\u1ec7 th\u1ed1ng l\u00e0m m\u00e1t nhi\u1ec1u giai \u0111o\u1ea1n \u0111\u1ec3 gi\u1ea3m thi\u1ec3u hi\u1ec7n t\u01b0\u1ee3ng n\u00e0y.<\/p>\n

              G\u00f3c nghi\u00eang r\u00e3nh tho\u00e1t n\u01b0\u1edbc \u0111\u01b0\u1ee3c khuy\u1ebfn ngh\u1ecb cho l\u1ed7 khoan ch\u00ednh l\u00e0 bao nhi\u00eau?<\/h3>\n

              G\u00f3c nghi\u00eang t\u1eeb 0,5\u00b0 \u0111\u1ebfn 2\u00b0 gi\u00fap d\u1ec5 d\u00e0ng t\u00e1ch khu\u00f4n v\u00e0 ng\u0103n ng\u1eeba bavia. C\u1ea7n t\u00ednh \u0111\u1ebfn s\u1ef1 co ng\u00f3t c\u1ee7a v\u1eadt li\u1ec7u trong qu\u00e1 tr\u00ecnh thi\u1ebft k\u1ebf.<\/p>\n

              Ph\u01b0\u01a1ng ph\u00e1p \u00e9p kh\u1edbp c\u00f3 t\u1ed1t h\u01a1n ph\u01b0\u01a1ng ph\u00e1p l\u1eafp gh\u00e9p tr\u1ef1c ti\u1ebfp v\u00e0o khu\u00f4n \u0111\u1ed1i v\u1edbi nh\u1ef1a GF kh\u00f4ng?<\/h3>\n

              \u0110\u00fang v\u1eady, v\u00ec n\u00f3 cho ph\u00e9p \u1ed5n \u0111\u1ecbnh nh\u1ef1a tr\u01b0\u1edbc khi l\u1eafp \u0111\u1eb7t, gi\u1ea3m \u1ee9ng su\u1ea5t t\u1ee9c th\u1eddi. Ki\u1ec3m ch\u1ee9ng b\u1eb1ng c\u00e1c th\u1eed nghi\u1ec7m m\u00f4-men xo\u1eafn v\u00e0 l\u1ef1c k\u00e9o.<\/p>\n<\/div>\n

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

              Introduction Embedded brass nuts, also known as insert nuts, are widely used in plastic injection molding to provide strong, reusable threaded connections. These nuts are typically inserted into plastic bosses or pillars during or after the molding process. However, issues such as bulging, cracking, low pull-out or torque strength, misalignment, surface burns, and flash can […]<\/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-5812","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\/5812","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=5812"}],"version-history":[{"count":3,"href":"https:\/\/korea-transmission.com\/vi\/wp-json\/wp\/v2\/posts\/5812\/revisions"}],"predecessor-version":[{"id":5815,"href":"https:\/\/korea-transmission.com\/vi\/wp-json\/wp\/v2\/posts\/5812\/revisions\/5815"}],"wp:attachment":[{"href":"https:\/\/korea-transmission.com\/vi\/wp-json\/wp\/v2\/media?parent=5812"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/korea-transmission.com\/vi\/wp-json\/wp\/v2\/categories?post=5812"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/korea-transmission.com\/vi\/wp-json\/wp\/v2\/tags?post=5812"}],"curies":[{"name":"trang web","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}