{"id":3069,"date":"2022-03-23T08:41:27","date_gmt":"2022-03-23T01:41:27","guid":{"rendered":"https:\/\/bestray.com\/blog\/?p=3069"},"modified":"2024-02-27T16:18:07","modified_gmt":"2024-02-27T09:18:07","slug":"coc-tiep-dia-la-gi-vai-tro-va-ung-dung-cua-coc-tiep-dia","status":"publish","type":"post","link":"https:\/\/bestray.com\/blog\/coc-tiep-dia-la-gi-vai-tro-va-ung-dung-cua-coc-tiep-dia\/","title":{"rendered":"C\u1ecdc ti\u1ebfp \u0111\u1ecba l\u00e0 g\u00ec? Vai tr\u00f2 v\u00e0 \u1ee9ng d\u1ee5ng c\u1ee7a c\u1ecdc ti\u1ebfp \u0111\u1ecba"},"content":{"rendered":"

C\u1ecdc ti\u1ebfp \u0111\u1ecba<\/strong> gi\u00fap ch\u1ed1ng s\u00e9t hi\u1ec7u qu\u1ea3 v\u00e0 h\u1ea1n ch\u1ebf thi\u1ec7t h\u1ea1i do s\u00e9t g\u00e2y ra, nh\u01b0ng h\u1ec7 th\u1ed1ng ti\u1ebfp \u0111\u1ecba ch\u1ed1ng s\u00e9t c\u1ea7n \u0111\u01b0\u1ee3c thi c\u00f4ng c\u1ea9n th\u1eadn, \u0111\u00fang quy tr\u00ecnh. Vi\u1ec7c n\u1eafm r\u00f5 c\u00f4ng d\u1ee5ng c\u0169ng nh\u01b0 \u0111\u1eb7c t\u00ednh k\u1ef9 thu\u1eadt c\u1ee7a thi\u1ebft b\u1ecb n\u00e0y s\u1ebd gi\u00fap b\u1ea1n thi c\u00f4ng, gi\u00e1m s\u00e1t v\u00e0 \u0111\u1ea3m b\u1ea3o an to\u00e0n cho ng\u00f4i nh\u00e0, c\u00f4ng tr\u00ecnh x\u00e2y d\u1ef1ng. V\u1eady c\u1ecdc ti\u1ebfp \u0111\u1ecba l\u00e0 g\u00ec, c\u00e1c ti\u00eau chu\u1ea9n c\u0169ng nh\u01b0 quy \u0111\u1ecbnh khi thi c\u00f4ng nh\u01b0 th\u1ebf n\u00e0o? Bestray m\u1eddi b\u1ea1n c\u00f9ng t\u00ecm l\u1eddi gi\u1ea3i \u0111\u00e1p chi ti\u1ebft trong b\u00e0i vi\u1ebft sau.<\/span><\/p>\n

1. C\u1ecdc ti\u1ebfp \u0111\u1ecba l\u00e0 g\u00ec? C\u1ea5u t\u1ea1o v\u00e0 ch\u1ee9c n\u0103ng<\/b><\/h2>\n

C\u1ecdc ti\u1ebfp \u0111\u1ecba<\/strong> l\u00e0 m\u1ed9t thanh kim lo\u1ea1i \u0111\u01b0\u1ee3c m\u00e0i m\u1ed9t \u0111\u1ea7u \u0111\u1ec3 c\u00f3 th\u1ec3 c\u1eafm s\u00e2u xu\u1ed1ng \u0111\u1ea5t, \u0111\u1ea7u c\u00f2n l\u1ea1i \u0111\u01b0\u1ee3c l\u00e0m \u0111\u1ec3 \u0111\u00f3ng ch\u00f9y. \u0110\u1ea7u c\u1ecdc c\u00f3 th\u1ec3 \u0111i d\u00e2y \u0111\u1ec3 ti\u1ec7n cho vi\u1ec7c li\u00ean k\u1ebft 2 c\u1ecdc v\u1edbi nhau. \u0110\u00e2y l\u00e0 v\u1eadt li\u1ec7u ch\u1ed1ng s\u00e9t \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng trong vi\u1ec7c ti\u1ebfp \u0111\u1ea5t ch\u1ed1ng s\u00e9t ti\u00eau chu\u1ea9n.\u00a0<\/span><\/p>\n

H\u1ec7 th\u1ed1ng ti\u1ebfp \u0111\u1ecba bao g\u1ed3m:\u00a0<\/span><\/p>\n

    \n
  • C\u1ecdc ti\u1ebfp \u0111\u1ecba<\/span><\/li>\n
  • D\u00e2y li\u00ean k\u1ebft<\/span><\/li>\n
  • M\u1ed1i n\u1ed1i li\u00ean k\u1ebft<\/span><\/li>\n
  • H\u1ed9p n\u1ed1i \u0111\u1ea5t v\u00e0 ki\u1ec3m tra<\/span><\/li>\n<\/ul>\n

    C\u1ecdc ti\u1ebfp \u0111\u1ecba \u0111\u01b0\u1ee3c coi l\u00e0 b\u1ed9 ph\u1eadn c\u1ed1t l\u00f5i c\u1ee7a h\u1ec7 th\u1ed1ng ch\u1ed1ng s\u00e9t, n\u00f3 gi\u00fap h\u1ec7 th\u1ed1ng ch\u1ed1ng s\u00e9t ho\u1ea1t \u0111\u1ed9ng hi\u1ec7u qu\u1ea3.<\/span><\/p>\n

    2. \u0110\u1eb7c \u0111i\u1ec3m c\u1ee7a c\u1ecdc ti\u1ebfp \u0111\u1ecba<\/b><\/h2>\n

    C\u1ecdc ti\u1ebfp \u0111\u1ecba<\/strong> c\u00f3 m\u1ed9t s\u1ed1 \u0111i\u1ec3m v\u01b0\u1ee3t tr\u1ed9i m\u00e0 b\u1ea1n c\u1ea7n n\u1eafm b\u1eaft nh\u01b0 sau:<\/span><\/p>\n

      \n
    • \u0110\u01b0\u1ee3c l\u00e0m b\u1eb1ng \u0111\u1ed3ng v\u00e0 th\u00e9p m\u1ea1 \u0111\u1ed3ng n\u00ean c\u1ee9ng, ch\u1eafc ch\u1ecbu \u0111\u01b0\u1ee3c ch\u1ea5n \u0111\u1ed9ng m\u1ea1nh v\u00e0 c\u00f3 th\u1ec3 d\u1ec5 d\u00e0ng h\u1ea1 xu\u1ed1ng \u0111\u1ea5t b\u1eb1ng tay, b\u00faa.<\/span><\/li>\n
    • \u0110\u1eb7c bi\u1ec7t kh\u00f4ng b\u1ecb han g\u1ec9, oxi h\u00f3a hay hao m\u00f2n theo th\u1eddi gian.<\/span><\/li>\n
    • L\u1edbp m\u1ea1 \u0111\u1ed3ng b\u00ean ngo\u00e0i th\u01b0\u1eddng r\u1ea5t s\u00e1ng v\u00e0 b\u00f3ng, kh\u00f4ng d\u1ec5 tr\u1ea7y x\u01b0\u1edbc k\u1ec3 c\u1ea3 khi \u0111\u00f3ng n\u1eafp l\u1ea1i.<\/span><\/li>\n
    • C\u1ed9t thu l\u00f4i ti\u1ebfp \u0111\u1ea5t \u0111\u01b0\u1ee3c s\u1ea3n xu\u1ea5t theo ti\u00eau chu\u1ea9n BS 6651:1999.<\/span><\/li>\n
    • Hai \u0111\u1ea7u c\u1ecdc \u0111\u1ec1u c\u00f3 r\u0103ng c\u01b0a khi ti\u1ebfp x\u00fac c\u00f3 th\u1ec3 si\u1ebft ch\u1eb7t c\u1ecdc v\u00e0 d\u00e2y n\u1ed1i \u0111\u1ea5t c\u0169ng nh\u01b0 d\u1ec5 d\u00e0ng k\u1ebft n\u1ed1i theo chi\u1ec1u d\u00e0i c\u1ee7a c\u1ecdc.<\/span><\/li>\n
    • \u0110\u1ed9 d\u00e0y l\u1edbp m\u1ea1 \u0111\u1ed3ng trung b\u00ecnh c\u1ee7a thanh n\u1ed1i \u0111\u1ea5t l\u00e0 250 micron.<\/span><\/li>\n
    • \u0110\u1ec3 ph\u00e1t huy t\u1ed1i \u0111a hi\u1ec7u qu\u1ea3 s\u1eed d\u1ee5ng c\u1ecdc ti\u1ebfp \u0111\u1ecba c\u0169ng nh\u01b0 ho\u00e0n thi\u1ec7n h\u1ec7 th\u1ed1ng ch\u1ed1ng s\u00e9t, b\u1ea1n ph\u1ea3i trang b\u1ecb th\u00eam m\u1ed9t s\u1ed1 ph\u1ee5 ki\u1ec7n nh\u01b0: thanh \u0111\u1ed3ng, d\u00e2y ch\u1ed1ng s\u00e9t, c\u00e1p \u0111\u1ed3ng tr\u1ea7n trong qu\u00e1 tr\u00ecnh thi c\u00f4ng.\u00a0<\/span><\/li>\n<\/ul>\n

      3. \u1ee8ng d\u1ee5ng c\u1ee7a c\u1ecdc ti\u1ebfp \u0111\u1ecba<\/b><\/h2>\n

      C\u00e1c c\u1ecdc ti\u1ebfp<\/strong> \u0111\u1ecba \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 ph\u00e2n t\u00e1n m\u1ed9t l\u01b0\u1ee3ng l\u1edbn n\u0103ng l\u01b0\u1ee3ng t\u1eeb tia s\u00e9t v\u00e0 truy\u1ec1n n\u00f3 xu\u1ed1ng m\u1eb7t \u0111\u1ea5t. M\u1ee5c \u0111\u00edch l\u00e0 b\u1ea3o v\u1ec7 t\u00ednh m\u1ea1ng, t\u00e0i s\u1ea3n v\u00e0 c\u00f4ng tr\u00ecnh c\u1ee7a con ng\u01b0\u1eddi. \u0110\u1ed3ng th\u1eddi, tr\u00e1nh h\u01b0 h\u1ecfng c\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec7n, \u0111i\u1ec7n t\u1eed v.v.<\/span><\/p>\n

      Thanh n\u1ed1i \u0111\u1ea5t d\u1eabn d\u00f2ng xung s\u00e9t t\u1eeb c\u00e1c thi\u1ebft b\u1ecb b\u1ea3o v\u1ec7 xu\u1ed1ng \u0111\u1ea5t. Sau \u0111\u00f3 l\u00e0m ti\u00eau tan n\u0103ng l\u01b0\u1ee3ng c\u1ee7a c\u00e1c xung \u0111\u1ed9ng n\u00e0y. N\u1ebfu thi\u1ebft b\u1ecb ch\u1ed1ng s\u00e9t c\u00f3 \u0111i\u1ec7n tr\u1edf \u0111\u1ea5t cao (n\u1ed1i \u0111\u1ea5t kh\u00f4ng t\u1ed1t) th\u00ec khi s\u00e9t \u0111\u00e1nh v\u00e0o l\u01b0\u1edbi \u0111i\u1ec7n s\u1ebd g\u00e2y ra nh\u1eefng thi\u1ec7t h\u1ea1i v\u00e0 h\u1eadu qu\u1ea3 kh\u00f3 l\u01b0\u1eddng. T\u00f9y theo y\u00eau c\u1ea7u ti\u1ebfp \u0111\u1ea5t v\u00e0 \u0111i\u1ec7n tr\u1edf ti\u1ebfp \u0111\u1ea5t c\u1ee7a c\u00f4ng tr\u00ecnh, c\u00f3 th\u1ec3 l\u1eafp \u0111\u1eb7t h\u1ec7 th\u1ed1ng ti\u1ebfp \u0111\u1ecba b\u1eb1ng khoan h\u1ed1 \u0111\u1ec3 \u0111\u1eb7t c\u1ecdc, ho\u1eb7c \u0111\u00f3ng c\u1ecdc v\u1edbi s\u1ed1 l\u01b0\u1ee3ng c\u1ecdc th\u00edch h\u1ee3p.<\/span><\/p>\n

      4. \u01afu nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a c\u1ecdc ti\u1ebfp \u0111\u1ecba<\/b><\/h2>\n

      C\u1ecdc ti\u1ebfp \u0111\u1ecba<\/strong> c\u0169ng mang l\u1ea1i cho ng\u01b0\u1eddi d\u00f9ng v\u1edbi c\u00e1c \u01b0u v\u00e0 nh\u01b0\u1ee3c \u0111i\u1ec3m ri\u00eang bi\u1ec7t nh\u01b0 sau:<\/span><\/p>\n

      \u01afu \u0111i\u1ec3m:<\/b><\/p>\n

        \n
      • Ch\u1ee9c n\u0103ng ch\u00ednh c\u1ee7a c\u1ecdc l\u00e0 ph\u00e2n t\u00e1n c\u00e1c ngu\u1ed3n n\u0103ng l\u01b0\u1ee3ng tr\u00ean m\u1eb7t \u0111\u1ea5t n\u00ean gi\u00fap \u0111\u1ea3m b\u1ea3o t\u00ednh m\u1ea1ng con ng\u01b0\u1eddi, \u0111\u1ed3ng th\u1eddi h\u1ea1n ch\u1ebf \u1ea3nh h\u01b0\u1edfng c\u1ee7a s\u1ea5m s\u00e9t \u0111\u1ebfn c\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec7n.<\/span><\/li>\n
      • C\u1ecdc ti\u1ebfp \u0111\u1ecba c\u00f3 r\u1ea5t nhi\u1ec1u lo\u1ea1i v\u00e0 \u0111a d\u1ea1ng tr\u00ean th\u1ecb tr\u01b0\u1eddng, \u0111\u00e1p \u1ee9ng nhu c\u1ea7u ti\u00eau d\u00f9ng c\u0169ng nh\u01b0 c\u00e1c c\u00f4ng tr\u00ecnh kh\u00e1c nhau. Do \u0111\u00f3, ng\u01b0\u1eddi d\u00f9ng c\u00f3 th\u1ec3 t\u1ef1 m\u00ecnh l\u1ef1a ch\u1ecdn lo\u1ea1i c\u1ecdc ti\u1ebfp \u0111\u1ecba ph\u00f9 h\u1ee3p nh\u1ea5t, v\u1eeba \u01b0ng \u00fd v\u1eeba ti\u1ebft ki\u1ec7m chi ph\u00ed v\u00e0 nh\u00e2n c\u00f4ng.<\/span><\/li>\n
      • C\u1ecdc \u0111\u01b0\u1ee3c l\u1eafp \u0111\u1eb7t v\u00e0 thi c\u00f4ng d\u1ec5 d\u00e0ng, ch\u1ec9 c\u1ea7n m\u1ed9t th\u1eddi gian ng\u1eafn l\u00e0 h\u1ec7 th\u1ed1ng c\u1ecdc ti\u1ebfp \u0111\u1ecba c\u00f3 th\u1ec3 ho\u00e0n th\u00e0nh, \u0111i\u1ec1u n\u00e0y cho ph\u00e9p ng\u01b0\u1eddi s\u1eed d\u1ee5ng ti\u1ebft ki\u1ec7m t\u1ed1i \u0111a th\u1eddi gian v\u00e0 gi\u1ea3m chi ph\u00ed thi c\u00f4ng r\u1ea5t nhi\u1ec1u.<\/span><\/li>\n
      • Pin c\u00f3 \u0111\u1ed9 b\u1ec1n cao, ho\u1ea1t \u0111\u1ed9ng \u1ed5n \u0111\u1ecbnh trong th\u1eddi gian d\u00e0i n\u00ean ng\u01b0\u1eddi ti\u00eau d\u00f9ng c\u00f3 th\u1ec3 y\u00ean t\u00e2m s\u1eed d\u1ee5ng s\u1ea3n ph\u1ea9m m\u00e0 kh\u00f4ng c\u1ea7n s\u1eeda ch\u1eefa, b\u1ea3o d\u01b0\u1ee1ng.<\/span><\/li>\n<\/ul>\n

        Nh\u01b0\u1ee3c \u0111i\u1ec3m:<\/b><\/p>\n

        D\u00f2ng s\u1ea3n ph\u1ea9m n\u00e0y th\u01b0\u1eddng c\u00f3 k\u00edch th\u01b0\u1edbc kh\u00e1 to v\u00e0 n\u1eb7ng, n\u00ean kh\u00f3 kh\u0103n trong qu\u00e1 tr\u00ecnh thi c\u00f4ng. B\u1edfi v\u1eady, b\u1ea1n c\u1ea7n ph\u1ea3i th\u1ef1c hi\u1ec7n theo ph\u01b0\u01a1ng ph\u00e1p \u0111\u00f3ng c\u1ecdc.<\/span><\/p>\n

        5. Ph\u00e2n lo\u1ea1i c\u1ecdc ti\u1ebfp \u0111\u1ecba<\/b><\/h2>\n

        \u0110\u1ec3 gi\u00fap b\u1ea1n c\u00f3 th\u1ec3 ph\u00e2n lo\u1ea1i \u0111\u01b0\u1ee3c c\u1ecdc ti\u1ebfp \u0111\u1ecba<\/strong> chu\u1ea9n v\u00e0 ch\u00ednh x\u00e1c. B\u1ea1n c\u00f3 th\u1ec3 d\u1ef1a v\u00e0o: ch\u1ea5t li\u1ec7u, ngu\u1ed3n g\u1ed1c v\u00e0 h\u00ecnh d\u00e1ng. C\u1ee5 th\u1ec3 nh\u01b0 sau:<\/span><\/p>\n

        5.1. Ph\u00e2n lo\u1ea1i theo ch\u1ea5t li\u1ec7u<\/b><\/h3>\n

        Th\u00e9p m\u1ea1 k\u1ebdm: ch\u1ea5t l\u01b0\u1ee3ng cao \u0111\u01b0\u1ee3c nh\u00fang trong b\u1ec3 k\u1ebdm n\u00f3ng.<\/span><\/p>\n

        Th\u00e9p m\u1ea1 \u0111\u1ed3ng: l\u00f5i c\u1ecdc \u0111\u01b0\u1ee3c l\u00e0m b\u1eb1ng th\u00e9p, l\u00e0m t\u0103ng kh\u1ea3 n\u0103ng truy\u1ec1n d\u1eabn c\u1ee7a s\u00e9t. C\u1ecdc \u0111\u01b0\u1ee3c b\u1ecdc m\u1ed9t l\u1edbp \u0111\u1ed3ng m\u1ecfng b\u00ean ngo\u00e0i v\u1edbi h\u00e0m l\u01b0\u1ee3ng \u0111\u1ed3ng th\u1ea5p.<\/span><\/p>\n

        C\u00e1c thanh ti\u1ebfp \u0111\u1ea5t \u0111\u01b0\u1ee3c l\u00e0m b\u1eb1ng \u0111\u1ed3ng \u0111\u1eb7c nguy\u00ean ch\u1ea5t (\u0111\u1ed3ng \u0111\u1ecf ho\u1eb7c \u0111\u1ed3ng v\u00e0ng): c\u00f3 ch\u1ea5t l\u01b0\u1ee3ng t\u1ed1t nh\u1ea5t \u1edf n\u01b0\u1edbc ta v\u1edbi h\u00e0m l\u01b0\u1ee3ng \u0111\u1ed3ng 95 – 99%.<\/span><\/p>\n

        5.2. Ph\u00e2n lo\u1ea1i d\u1ef1a v\u00e0o xu\u1ea5t x\u1ee9<\/b><\/h3>\n

        \u1ede n\u01b0\u1edbc ta, c\u1ecdc ti\u1ebfp \u0111\u1ecba \u0111\u01b0\u1ee3c nh\u1eadp kh\u1ea9u t\u1eeb \u1ea4n \u0110\u1ed9 v\u00e0 trong n\u01b0\u1edbc l\u00e0 hai lo\u1ea1i \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng ph\u1ed5 bi\u1ebfn. C\u1ee5 th\u1ec3 v\u1ec1 2 lo\u1ea1i n\u00e0y nh\u01b0 sau:<\/span><\/p>\n

          \n
        • S\u1ea3n xu\u1ea5t t\u1ea1i \u1ea4n \u0110\u1ed9 c\u00f3 ch\u1ea5t l\u01b0\u1ee3ng trung b\u00ecnh v\u00e0 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong c\u00e1c d\u1ef1 \u00e1n v\u1eeba v\u00e0 nh\u1ecf.<\/span><\/li>\n
        • S\u1ea3n xu\u1ea5t t\u1ea1i Vi\u1ec7t Nam r\u1ea5t \u0111a d\u1ea1ng v\u1ec1 gi\u00e1 c\u1ea3, ch\u1ea5t l\u01b0\u1ee3ng, quy c\u00e1ch v\u00e0 v\u1eadt li\u1ec7u. Theo ch\u1ea5t l\u01b0\u1ee3ng s\u1ea3n xu\u1ea5t ph\u00f9 h\u1ee3p v\u1edbi t\u1eebng m\u00f4 h\u00ecnh c\u00f4ng tr\u00ecnh kh\u00e1c nhau.<\/span><\/li>\n<\/ul>\n

          5.3. Ph\u00e2n lo\u1ea1i d\u1ef1a v\u00e0o h\u00ecnh d\u1ea1ng<\/b><\/h3>\n
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          • H\u00ecnh ch\u1eef V – \u0111\u1ed9 d\u00e0y l\u1edbn (V50 ~ V70): lo\u1ea1i n\u00e0y c\u00f3 di\u1ec7n t\u00edch ti\u1ebfp \u0111\u1ea5t l\u1edbn, b\u1ea3n to th\u01b0\u1eddng d\u00f9ng \u0111\u1ec3 ch\u1ed1ng s\u00e9t cho nh\u00e0 x\u01b0\u1edfng, khu v\u1ef1c d\u1ec5 ch\u00e1y n\u1ed5 nh\u01b0 tr\u1ea1m \u0111i\u1ec7n, c\u00e2y x\u0103ng.<\/span><\/li>\n
          • C\u1ecdc n\u1ed1i \u0111\u1ea5t r\u1eafn d\u1ea1ng thanh tr\u00f2n D14 – D20 c\u00f3 thi\u1ebft k\u1ebf nh\u1ecf g\u1ecdn, d\u1ec5 thi c\u00f4ng n\u00ean \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong c\u00e1c c\u00f4ng tr\u00ecnh nh\u1ecf, nh\u00e0 \u1edf.<\/span><\/li>\n<\/ul>\n

            6. Ti\u00eau chu\u1ea9n l\u1ef1a ch\u1ecdn c\u1ecdc ti\u1ebfp \u0111\u1ecba<\/b><\/h2>\n

            B\u1ea5t k\u1ef3 m\u1ed9t thi\u1ebft b\u1ecb n\u00e0o mu\u1ed1n ho\u1ea1t \u0111\u1ed9ng v\u00e0 l\u00e0m t\u1ed1t c\u00f4ng vi\u1ec7c c\u1ee7a n\u00f3 \u0111\u1ec1u ph\u1ea3i \u0111\u1ea1t \u0111\u01b0\u1ee3c nh\u1eefng ti\u00eau chu\u1ea9n nh\u1ea5t \u0111\u1ecbnh. \u0110i\u1ec1u ki\u1ec7n ti\u00ean quy\u1ebft n\u00e0y c\u0169ng \u00e1p d\u1ee5ng cho vi\u1ec7c l\u1eafp \u0111\u1eb7t thanh n\u1ed1i \u0111\u1ea5t. Vi\u1ec7c l\u1eafp \u0111\u1eb7t thi\u1ebft b\u1ecb n\u00e0y c\u1ea7n tu\u00e2n th\u1ee7 c\u00e1c ti\u00eau chu\u1ea9n ch\u1ed1ng s\u00e9t, Quy chu\u1ea9n k\u1ef9 thu\u1eadt Vi\u1ec7t Nam v\u1ec1 c\u1ecdc ti\u1ebfp \u0111\u1ecba<\/strong>, \u0111\u01b0\u1ee3c quy \u0111\u1ecbnh trong TCVN 9358: 2012.<\/span><\/p>\n

              \n
            • \u0110\u1ea3m b\u1ea3o \u0111i\u1ec7n tr\u1edf n\u1ed1i \u0111\u1ea5t kh\u00f4ng v\u01b0\u1ee3t qu\u00e1 10 \u03a9. Gi\u00e1 tr\u1ecb n\u00e0y th\u1eadm ch\u00ed ph\u1ea3i th\u1ea5p h\u01a1n \u1edf m\u1ed9t s\u1ed1 khu v\u1ef1c c\u1ee5 th\u1ec3. V\u00ed d\u1ee5: c\u00e1c ch\u1ea5t d\u1ec5 ch\u00e1y n\u1ed5 nh\u01b0 c\u00e2y x\u0103ng, \u0111i\u1ec7n l\u1ef1c, nh\u00e0 m\u00e1y h\u00f3a ch\u1ea5t,…<\/span><\/li>\n
            • N\u1ed1i \u0111\u1ea5t b\u1eb1ng thanh kim lo\u1ea1i tr\u00f2n v\u1edbi \u0111i\u1ec7n c\u1ef1c b\u1eb1ng th\u00e9p c\u00f3 \u0111\u01b0\u1eddng k\u00ednh \u00edt nh\u1ea5t l\u00e0 16 mm. \u0110\u1ed1i v\u1edbi \u0111i\u1ec7n c\u1ef1c kim lo\u1ea1i kh\u00f4ng ph\u1ea3i th\u00e9p, kh\u00f4ng nh\u1ecf h\u01a1n 12mm.<\/span><\/li>\n
            • Kh\u00f4ng s\u1eed d\u1ee5ng th\u00e9p c\u00e2y, d\u00e2y th\u00e9p gai l\u00e0m \u0111\u1ea7u n\u1ed1i \u0111\u1ea5t c\u00f3 gai.<\/span><\/li>\n
            • C\u1ecdc n\u1ed1i \u0111\u1ea5t c\u1ee7a \u1ed1ng kim lo\u1ea1i c\u00f3 chi\u1ec1u d\u00e0y \u1ed1ng t\u1ed1i thi\u1ec3u l\u00e0 2,45mm v\u00e0 \u0111\u01b0\u1eddng k\u00ednh trong t\u1ed1i thi\u1ec3u l\u00e0 19mm, \u0111i\u1ec7n c\u1ef1c c\u1ee7a \u1ed1ng th\u00e9p ph\u1ea3i \u0111\u01b0\u1ee3c b\u1ea3o v\u1ec7 ch\u1ed1ng \u0103n m\u00f2n.<\/span><\/li>\n<\/ul>\n

              7. Quy \u0111\u1ecbnh thi c\u00f4ng c\u1ecdc ti\u1ebfp \u0111\u1ecba b\u1ea1n c\u1ea7n bi\u1ebft<\/b><\/h2>\n

              D\u01b0\u1edbi \u0111\u00e2y l\u00e0 m\u1ed9t s\u1ed1 quy \u0111\u1ecbnh v\u1ec1 thi c\u00f4ng c\u1ecdc ti\u1ebfp \u0111\u1ecba<\/strong> t\u1ea1i ph\u1ea7n 5, TCVN 9358:2012. B\u1ea1n c\u1ea7n n\u1eafm b\u1eaft th\u1eadt k\u1ef9 tr\u01b0\u1edbc thi c\u00f4ng lo\u1ea1i s\u1ea3n ph\u1ea9m n\u00e0y nh\u01b0 sau:<\/span><\/p>\n

                \n
              • \u0110\u1ea5t ph\u1ea3i r\u1eafn ch\u1eafc, \u0111\u01b0\u1ee3c n\u00e9n ch\u1eb7t d\u1ecdc theo to\u00e0n b\u1ed9 chi\u1ec1u d\u00e0i c\u1ee7a c\u1ecdc ti\u1ebfp \u0111\u1ecba. C\u1ecdc ph\u1ea3i \u0111\u01b0\u1ee3c \u0111\u00f3ng ho\u00e0n to\u00e0n v\u00e0o \u0111\u1ea5t.<\/span><\/li>\n
              • D\u00e2y n\u1ed1i gi\u1eefa c\u00e1c c\u1ecdc ti\u1ebfp \u0111\u1ecba ph\u1ea3i c\u00f3 ti\u1ebft di\u1ec7n b\u1eb1ng ho\u1eb7c l\u1edbn h\u01a1n ti\u1ebft di\u1ec7n c\u1ee7a d\u00e2y ti\u1ebfp \u0111\u1ecba ch\u00ednh.<\/span><\/li>\n
              • Chi\u1ec1u d\u00e0i c\u1ecdc ti\u1ebfp \u0111\u1ecba 2,5 m – 3 m. \u0110\u01b0\u1ee3c ph\u00e9p h\u00e0n \u0111\u1ec3 t\u0103ng chi\u1ec1u d\u00e0i trong tr\u01b0\u1eddng h\u1ee3p \u0111i\u1ec7n c\u1ef1c \u0111\u1ea5t c\u1ea7n d\u00e0i h\u01a1n 3m.<\/span><\/li>\n
              • \u0110\u1ed9 s\u00e2u l\u1eafp \u0111\u1eb7t c\u1ee7a \u0111i\u1ec7n c\u1ef1c \u0111\u1ea5t l\u00e0 0,5 m \u0111\u1ebfn 1,2 m.<\/span><\/li>\n
              • Pin n\u1ed1i \u0111\u1ea5t ph\u1ea3i s\u1eed d\u1ee5ng n\u1eafp \u0111\u1ea7u n\u1ed1i chuy\u00ean d\u1ee5ng. N\u1ebfu n\u1ec1n \u0111\u1ea5t qu\u00e1 c\u1ee9ng, c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng m\u0169i khoan c\u00f3 \u0111\u01b0\u1eddng k\u00ednh m\u0169i khoan nh\u1ecf h\u01a1n \u0111\u01b0\u1eddng k\u00ednh c\u1ee7a thanh n\u1ed1i \u0111\u1ea5t.<\/span><\/li>\n<\/ul>\n

                8. T\u1ed5ng k\u1ebft\u00a0\u00a0<\/b><\/h2>\n

                Qua b\u00e0i vi\u1ebft n\u00e0y, b\u1ea1n \u0111\u1ecdc c\u00f3 th\u1ec3 l\u1ef1a ch\u1ecdn \u0111\u01b0\u1ee3c lo\u1ea1i c\u1ecdc ti\u1ebfp \u0111\u1ecba<\/strong> ph\u00f9 h\u1ee3p v\u1edbi nhu c\u1ea7u c\u1ee7a m\u00ecnh. V\u00e0 c\u1ea7n c\u00f3 gi\u1ea3i ph\u00e1p ch\u1ed1ng s\u00e9t ho\u00e0n ch\u1ec9nh \u0111\u1ec3 b\u1ea3o v\u1ec7 thi\u1ebft b\u1ecb, c\u00f4ng tr\u00ecnh. Khi thi c\u00f4ng m\u1ed9t trong nh\u1eefng y\u1ebfu t\u1ed1 quan tr\u1ecdng nh\u1ea5t l\u00e0 c\u1ea7n ph\u1ea3i tu\u00e2n th\u1ee7 c\u00e1c quy \u0111\u1ecbnh, ti\u00eau chu\u1ea9n n\u1ed1i \u0111\u1ea5t v\u00e0 c\u00e1c ti\u00eau chu\u1ea9n ch\u1ed1ng s\u00e9t quy \u0111\u1ecbnh kh\u00e1c. Khi \u0111\u00e3 ch\u1ecdn \u0111\u01b0\u1ee3c c\u1ecdc ti\u1ebfp \u0111\u1ecba ch\u1ea5t l\u01b0\u1ee3ng b\u1ea1n c\u1ea7n tham kh\u1ea3o th\u00eam h\u1ed9p c\u00e1p, m\u00e1ng c\u00e1p, thang c\u00e1p c\u1ee7a Bestray cung c\u1ea5p. \u0110\u1ec3 \u0111\u1ea3m b\u1ea3o h\u1ec7 th\u1ed1ng d\u00e2y d\u1eabn \u0111i\u1ec7n ho\u1ea1t \u0111\u1ed9ng an to\u00e0n v\u00e0 tr\u00e1nh b\u1ecb g\u00e2y \u1ea3nh h\u01b0\u1edfng t\u1eeb m\u00f4i tr\u01b0\u1eddng b\u00ean ngo\u00e0i.<\/span><\/p>\n

                Video T\u00ecm hi\u1ec3u v\u1ec1 thang m\u00e1ng c\u00e1p Bestray<\/strong><\/p>\n