{"id":1856,"date":"2025-08-11T02:44:56","date_gmt":"2025-08-11T02:44:56","guid":{"rendered":"https:\/\/nbaem.com\/?p=1856"},"modified":"2025-08-11T04:25:13","modified_gmt":"2025-08-11T04:25:13","slug":"what-is-a-rare-earth-magnet","status":"publish","type":"post","link":"https:\/\/nbaem.com\/vi\/what-is-a-rare-earth-magnet\/","title":{"rendered":"Nam ch\u00e2m \u0111\u1ea5t hi\u1ebfm l\u00e0 g\u00ec"},"content":{"rendered":"

B\u1ea1n c\u00f3 t\u00f2 m\u00f2 v\u1ec1 nam ch\u00e2m \u0111\u1ea5t hi\u1ebfm l\u00e0 g\u00ec<\/strong> v\u00e0 t\u1ea1i sao n\u00f3 l\u1ea1i xu\u1ea5t hi\u1ec7n trong c\u00e1c thi\u1ebft b\u1ecb c\u00f4ng ngh\u1ec7 cao v\u00e0 \u1ee9ng d\u1ee5ng c\u00f4ng nghi\u1ec7p? N\u1ebfu b\u1ea1n t\u1eebng t\u1ef1 h\u1ecfi \u0111i\u1ec1u g\u00ec l\u00e0m cho nh\u1eefng nam ch\u00e2m n\u00e0y n\u1ed5i b\u1eadt h\u01a1n so v\u1edbi nam ch\u00e2m th\u00f4ng th\u01b0\u1eddng, b\u1ea1n \u0111\u00e3 \u0111\u1ebfn \u0111\u00fang n\u01a1i. Nam ch\u00e2m \u0111\u1ea5t hi\u1ebfm l\u00e0 m\u1ed9t trong nh\u1eefng nam ch\u00e2m v\u0129nh c\u1eedu m\u1ea1nh nh\u1ea5t hi\u1ec7n nay, cung c\u1ea5p n\u0103ng l\u01b0\u1ee3ng cho m\u1ecdi th\u1ee9 t\u1eeb xe \u0111i\u1ec7n \u0111\u1ebfn loa c\u1ee7a \u0111i\u1ec7n tho\u1ea1i th\u00f4ng minh c\u1ee7a b\u1ea1n.<\/p>\n

Trong b\u00e0i vi\u1ebft n\u00e0y, b\u1ea1n s\u1ebd nh\u1eadn \u0111\u01b0\u1ee3c m\u1ed9t gi\u1ea3i th\u00edch r\u00f5 r\u00e0ng, kh\u00f4ng quanh co v\u1ec1 nam ch\u00e2m \u0111\u1ea5t hi\u1ebfm<\/strong>, c\u00e1c lo\u1ea1i c\u1ee7a ch\u00fang, \u0111\u1eb7c t\u00ednh ch\u00ednh, v\u00e0 l\u00fd do t\u1ea1i sao ch\u00fang l\u1ea1i c\u1ea7n thi\u1ebft trong c\u00f4ng ngh\u1ec7 hi\u1ec7n \u0111\u1ea1i. D\u00f9 b\u1ea1n l\u00e0 sinh vi\u00ean, k\u1ef9 s\u01b0, hay ch\u1ec9 \u0111\u01a1n gi\u1ea3n t\u00f2 m\u00f2 v\u1ec1 nam ch\u00e2m, cu\u1ed1i h\u01b0\u1edbng d\u1eabn n\u00e0y b\u1ea1n s\u1ebd hi\u1ec3u t\u1ea1i sao nh\u1eefng nam ch\u00e2m n\u00e0y l\u1ea1i l\u00e0 nh\u1eefng b\u01b0\u1edbc \u0111\u1ed9t ph\u00e1 \u2014 v\u00e0 c\u00e1ch m\u00e0 nh\u00e0 ph\u00e2n ph\u1ed1i nam ch\u00e2m Vi\u1ec7t Nam c\u00f3 th\u1ec3 gi\u00fap b\u1ea1n t\u00ecm ngu\u1ed3n cung \u1ee9ng nam ch\u00e2m ph\u00f9 h\u1ee3p cho d\u1ef1 \u00e1n c\u1ee7a m\u00ecnh.<\/p>\n

H\u00e3y b\u1eaft \u0111\u1ea7u n\u00e0o!<\/p>\n

\"\u0111\u1ea5t

\u0111\u1ea5t hi\u1ebfm<\/p><\/div>\n

Ch\u00ednh x\u00e1c Magnet \u0110\u1ea5t Hi\u1ebfm l\u00e0 g\u00ec<\/h2>\n

\u0110\u1ecbnh ngh\u0129a v\u1ec1 nam ch\u00e2m \u0111\u1ea5t hi\u1ebfm<\/h3>\n

N\u1ebfu b\u1ea1n \u0111ang h\u1ecfi nam ch\u00e2m \u0111\u1ea5t hi\u1ebfm l\u00e0 g\u00ec, c\u00e2u tr\u1ea3 l\u1eddi ng\u1eafn g\u1ecdn l\u00e0: m\u1ed9t nam ch\u00e2m v\u0129nh c\u1eedu l\u00e0m t\u1eeb h\u1ee3p kim ch\u1ee9a c\u00e1c nguy\u00ean t\u1ed1 \u0111\u1ea5t hi\u1ebfm, ph\u1ed5 bi\u1ebfn nh\u1ea5t l\u00e0 neodymium ho\u1eb7c samarium. Hai lo\u1ea1i ch\u00ednh l\u00e0 neodymium- s\u1eaft - boron (NdFeB) v\u00e0 samarium - cobalt (SmCo). Nh\u1eefng nam ch\u00e2m n\u00e0y t\u1ea1o ra tr\u01b0\u1eddng t\u1eeb m\u1ea1nh h\u01a1n nhi\u1ec1u so v\u1edbi c\u00e1c nam ch\u00e2m v\u0129nh c\u1eedu th\u00f4ng th\u01b0\u1eddng c\u00f9ng k\u00edch th\u01b0\u1edbc.<\/strong><\/p>\n

\u00dd ngh\u0129a c\u1ee7a thu\u1eadt ng\u1eef \u0111\u1ea5t hi\u1ebfm<\/h3>\n

\u201c\u0110\u1ea5t hi\u1ebfm\u201d \u0111\u1ec1 c\u1eadp \u0111\u1ebfn chu\u1ed7i c\u00e1c nguy\u00ean t\u1ed1 lanthanide trong b\u1ea3ng tu\u1ea7n ho\u00e0n \u2014 nh\u01b0 neodymium (Nd) v\u00e0 samarium (Sm). M\u1eb7c d\u00f9 t\u00ean g\u1ecdi, c\u00e1c nguy\u00ean t\u1ed1 n\u00e0y kh\u00f4ng nh\u1ea5t thi\u1ebft c\u1ef1c k\u1ef3 hi\u1ebfm trong v\u1ecf tr\u00e1i \u0111\u1ea5t; ch\u00fang ch\u1ec9 hi\u1ebfm g\u1eb7p trong c\u00e1c m\u1ecf t\u1eadp trung v\u00e0 c\u1ea7n x\u1eed l\u00fd \u0111\u1eb7c bi\u1ec7t. \u0110\u00f3 l\u00e0 l\u00fd do t\u1ea1i sao ngu\u1ed3n cung v\u00e0 sourcing l\u1ea1i quan tr\u1ecdng \u0111\u1ed1i v\u1edbi hi\u1ec7u su\u1ea5t t\u1eeb v\u00e0 chi ph\u00ed.<\/p>\n

Ch\u00fang kh\u00e1c bi\u1ec7t nh\u01b0 th\u1ebf n\u00e0o so v\u1edbi nam ch\u00e2m truy\u1ec1n th\u1ed1ng<\/h3>\n

Nam ch\u00e2m kim lo\u1ea1i \u0111\u1ea5t hi\u1ebfm n\u1ed5i b\u1eadt so v\u1edbi c\u00e1c lo\u1ea1i nam ch\u00e2m c\u0169 h\u01a1n:<\/p>\n

    \n
  • \u0110\u1ed9 m\u1ea1nh: Nam ch\u00e2m NdFeB c\u00f3 s\u1ea3n ph\u1ea9m n\u0103ng l\u01b0\u1ee3ng (\u0111\u1ed9 m\u1ea1nh t\u1eeb) cao nh\u1ea5t trong c\u00e1c nam ch\u00e2m v\u0129nh c\u1eedu ph\u1ed5 bi\u1ebfn.<\/li>\n
  • H\u00e0nh vi nhi\u1ec7t \u0111\u1ed9: SmCo cung c\u1ea5p \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh t\u1ed1t h\u01a1n \u1edf nhi\u1ec7t \u0111\u1ed9 cao so v\u1edbi NdFeB; ferrite v\u00e0 alnico thay \u0111\u1ed5i nh\u01b0ng th\u01b0\u1eddng y\u1ebfu h\u01a1n.<\/li>\n
  • \u0102n m\u00f2n v\u00e0 d\u1ec5 v\u1ee1: NdFeB m\u1ea1nh nh\u01b0ng d\u1ec5 b\u1ecb \u0103n m\u00f2n h\u01a1n v\u00e0 c\u00f3 th\u1ec3 gi\u00f2n; l\u1edbp ph\u1ee7 v\u00e0 x\u1eed l\u00fd l\u00e0 ph\u1ed5 bi\u1ebfn. SmCo ch\u1ed1ng \u0103n m\u00f2n t\u1ed1t h\u01a1n.<\/li>\n
  • Chi ph\u00ed v\u00e0 ngu\u1ed3n cung: Nam ch\u00e2m \u0111\u1ea5t hi\u1ebfm \u0111\u1eaft h\u01a1n v\u00e0 nh\u1ea1y c\u1ea3m v\u1edbi ngu\u1ed3n cung h\u01a1n so v\u1edbi ferrite (g\u1ed1m) v\u00e0 alnico.<\/li>\n<\/ul>\n

    T\u00f3m l\u1ea1i, nam ch\u00e2m \u0111\u1ea5t hi\u1ebfm mang l\u1ea1i t\u1ef7 l\u1ec7 s\u1ee9c m\u1ea1nh tr\u00ean k\u00edch th\u01b0\u1edbc cao h\u01a1n nhi\u1ec1u so v\u1edbi c\u00e1c l\u1ef1a ch\u1ecdn g\u1ed1m, ferrite ho\u1eb7c alnico, \u0111\u00f3 l\u00e0 l\u00fd do t\u1ea1i sao ch\u00fang l\u00e0 l\u1ef1a ch\u1ecdn h\u00e0ng \u0111\u1ea7u khi k\u00edch th\u01b0\u1edbc nh\u1ecf g\u1ecdn v\u00e0 hi\u1ec7u su\u1ea5t cao l\u00e0 quan tr\u1ecdng.<\/p>\n

    nam ch\u00e2m \u0111\u1ea5t hi\u1ebfm lo\u1ea1i n\u00e0o<\/h2>\n

    Nam ch\u00e2m Neodymium NdFeB<\/h3>\n
      \n
    • Th\u00e0nh ph\u1ea7n: neodymium, s\u1eaft, boron (NdFeB).<\/li>\n
    • T\u1ea1i sao ch\u00fang quan tr\u1ecdng: nam ch\u00e2m v\u0129nh c\u1eedu ph\u1ed5 bi\u1ebfn m\u1ea1nh nh\u1ea5t<\/strong> \u2014 \u0111\u1ed9 m\u1ea1nh t\u1eeb t\u1ed1t nh\u1ea5t cho k\u00edch th\u01b0\u1edbc.<\/li>\n
    • C\u00e1c c\u1ea5p \u0111\u1ed9 ph\u1ed5 bi\u1ebfn: N35, N42, N52 (s\u1ed1 c\u00e0ng cao c\u00e0ng m\u1ea1nh).<\/li>\n
    • \u0110\u1eb7c \u0111i\u1ec3m \u0111i\u1ec3n h\u00ecnh: nh\u1eb9, ti\u1ebft ki\u1ec7m chi ph\u00ed, ph\u00f9 h\u1ee3p cho thi\u1ebft k\u1ebf nh\u1ecf g\u1ecdn; c\u00f3 th\u1ec3 b\u1ecb \u0103n m\u00f2n<\/strong> v\u00e0 c\u1ea7n l\u1edbp ph\u1ee7 (niken, epoxy).<\/li>\n
    • Ph\u1ea1m vi nhi\u1ec7t \u0111\u1ed9: ho\u1ea1t \u0111\u1ed9ng t\u1ed1t \u1edf nhi\u1ec7t \u0111\u1ed9 ph\u00f2ng, nhi\u1ec1u lo\u1ea1i c\u00f3 th\u1ec3 ho\u1ea1t \u0111\u1ed9ng kho\u1ea3ng 80\u2013150\u00b0C; c\u00e1c lo\u1ea1i ch\u1ecbu nhi\u1ec7t cao v\u00e0 ph\u1ee5 gia m\u1edf r\u1ed9ng ph\u1ea1m vi \u0111\u00f3.<\/li>\n
    • \u1ee8ng d\u1ee5ng ph\u1ed5 bi\u1ebfn: loa, \u1ed5 c\u1ee9ng, \u0111\u1ed9ng c\u01a1 nh\u1ecf, tai nghe, linh ki\u1ec7n xe \u0111i\u1ec7n.<\/li>\n<\/ul>\n

      Samarium cobalt SmCo<\/h3>\n
        \n
      • Th\u00e0nh ph\u1ea7n: samari v\u00e0 coban.<\/li>\n
      • T\u1ea1i sao ch\u00fang quan tr\u1ecdng: r\u1ea5t \u1ed5n \u0111\u1ecbnh \u1edf nhi\u1ec7t \u0111\u1ed9 cao<\/strong> v\u00e0 t\u1ef1 nhi\u00ean ch\u1ed1ng \u0103n m\u00f2n.<\/li>\n
      • \u0110\u1eb7c \u0111i\u1ec3m \u0111i\u1ec3n h\u00ecnh: gi\u00f2n h\u01a1n v\u00e0 \u0111\u1eaft h\u01a1n NdFeB, nh\u01b0ng gi\u1eef \u0111\u01b0\u1ee3c t\u1eeb t\u00ednh \u1edf nhi\u1ec7t \u0111\u1ed9 cao h\u01a1n.<\/li>\n
      • Ph\u1ea1m vi nhi\u1ec7t \u0111\u1ed9: th\u01b0\u1eddng \u1ed5n \u0111\u1ecbnh \u0111\u1ebfn 250\u2013350\u00b0C t\u00f9y theo lo\u1ea1i.<\/li>\n
      • \u1ee8ng d\u1ee5ng ph\u1ed5 bi\u1ebfn: h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5, qu\u00e2n s\u1ef1, c\u1ea3m bi\u1ebfn nhi\u1ec7t \u0111\u1ed9 cao, m\u1ed9t s\u1ed1 \u0111\u1ed9ng c\u01a1 y t\u1ebf v\u00e0 c\u00f4ng nghi\u1ec7p.<\/li>\n<\/ul>\n

        So s\u00e1nh nhanh NdFeB v\u00e0 SmCo<\/h3>\n
          \n
        • \u0110\u1ed9 m\u1ea1nh: NdFeB > SmCo<\/strong> (NdFeB cho \u0111\u1ed9 m\u1ea1nh t\u1eeb tr\u01b0\u1eddng cao nh\u1ea5t).<\/li>\n
        • \u1ed4n \u0111\u1ecbnh nhi\u1ec7t \u0111\u1ed9: SmCo > NdFeB<\/strong> (SmCo gi\u1eef hi\u1ec7u su\u1ea5t \u1edf nhi\u1ec7t \u0111\u1ed9 cao h\u01a1n).<\/li>\n
        • Ch\u1ed1ng \u0103n m\u00f2n: SmCo t\u1ed1t h\u01a1n<\/strong>; NdFeB th\u01b0\u1eddng c\u1ea7n l\u1edbp ph\u1ee7.<\/li>\n
        • Chi ph\u00ed: SmCo \u0111\u1eaft h\u01a1n<\/strong>; NdFeB n\u00f3i chung r\u1ebb h\u01a1n v\u00e0 ph\u1ed5 bi\u1ebfn r\u1ed9ng r\u00e3i.<\/li>\n
        • C\u00e1c tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng: ch\u1ecdn NdFeB \u0111\u1ec3 k\u00edch th\u01b0\u1edbc\/m\u1ea1nh m\u1ebd v\u00e0 chi ph\u00ed; ch\u1ecdn SmCo cho nhi\u1ec7t \u0111\u1ed9 cao, m\u00f4i tr\u01b0\u1eddng \u0103n m\u00f2n ho\u1eb7c \u0111\u00f2i h\u1ecfi kh\u1eaft khe.<\/li>\n<\/ul>\n

          C\u00e1c l\u1ef1a ch\u1ecdn v\u00e0 bi\u1ebfn th\u1ec3 \u0111\u1ea5t hi\u1ebfm kh\u00e1c<\/h3>\n
            \n
          • C\u00e1c ph\u1ee5 gia nh\u01b0 dysprosium<\/strong> v\u00e0 terbium \u0111\u01b0\u1ee3c pha tr\u1ed9n v\u00e0o NdFeB \u0111\u1ec3 t\u0103ng kh\u1ea3 n\u0103ng ch\u1ecbu nhi\u1ec7t v\u00e0 \u0111\u1ed9 c\u1ee9ng t\u1eeb.<\/li>\n
          • Nam ch\u00e2m \u0111\u1ea5t hi\u1ebfm li\u00ean k\u1ebft (pha nh\u1ef1a) cung c\u1ea5p h\u00ecnh d\u1ea1ng ph\u1ee9c t\u1ea1p v\u00e0 d\u1ec5 x\u1eed l\u00fd h\u01a1n nh\u01b0ng \u0111\u1ed9 m\u1ea1nh th\u1ea5p h\u01a1n so v\u1edbi lo\u1ea1i nung k\u1ebft.<\/li>\n
          • Nam ch\u00e2m \u0111\u1ea5t hi\u1ebfm m\u1ecfng v\u00e0 ch\u1ebf t\u1ea1o vi m\u00f4 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u1ea3m bi\u1ebfn v\u00e0 \u0111i\u1ec7n t\u1eed ch\u00ednh x\u00e1c.<\/li>\n
          • So v\u1edbi nam ch\u00e2m s\u1eaft v\u00e0 alnico, nam ch\u00e2m kim lo\u1ea1i \u0111\u1ea5t hi\u1ebfm mang l\u1ea1i c\u01b0\u1eddng \u0111\u1ed9 t\u1eeb cao h\u01a1n nhi\u1ec1u cho c\u00f9ng k\u00edch th\u01b0\u1edbc, \u0111\u00f3 l\u00e0 l\u00fd do t\u1ea1i sao ch\u00fang chi\u1ebfm \u01b0u th\u1ebf trong \u0111i\u1ec7n t\u1eed hi\u1ec7n \u0111\u1ea1i, xe \u0111i\u1ec7n v\u00e0 c\u00f4ng ngh\u1ec7 s\u1ea1ch.<\/li>\n<\/ul>\n

            Thu\u1ed9c t\u00ednh v\u00e0 \u0111\u1eb7c \u0111i\u1ec3m c\u1ee7a nam ch\u00e2m \u0111\u1ea5t hi\u1ebfm<\/h2>\n

            T\u00f4i s\u1ebd ph\u00e2n t\u00edch c\u00e1c \u0111\u1eb7c \u0111i\u1ec3m ch\u00ednh b\u1ea1n c\u1ea7n bi\u1ebft khi ch\u1ecdn nam ch\u00e2m kim lo\u1ea1i \u0111\u1ea5t hi\u1ebfm nh\u01b0 neodymium v\u00e0 samarium cobalt.<\/p>\n

            \u0110\u1ed9 m\u1ea1nh t\u1eeb v\u00e0 kh\u1ea3 n\u0103ng ch\u1ed1ng t\u1eeb<\/h3>\n
              \n
            • C\u01b0\u1eddng \u0111\u1ed9 t\u1eeb (Remanence Br)<\/strong> \u2014 \u0111\u1ed9 m\u1ea1nh c\u1ee7a nam ch\u00e2m khi ho\u1ea1t \u0111\u1ed9ng \u0111\u1ed9c l\u1eadp. \u0110\u01b0\u1ee3c \u0111o b\u1eb1ng Tesla (T) ho\u1eb7c Gauss. Nam ch\u00e2m neodymium l\u00e0 lo\u1ea1i ph\u1ed5 bi\u1ebfn m\u1ea1nh nh\u1ea5t (thu\u1ed9c t\u00ednh nam ch\u00e2m neodymium th\u01b0\u1eddng cho th\u1ea5y Br kho\u1ea3ng 1.2\u20131.4 T), v\u00ec v\u1eady b\u1ea1n c\u00f3 th\u1ec3 \u0111\u1ea1t l\u1ef1c k\u00e9o cao trong m\u1ed9t k\u00edch th\u01b0\u1edbc nh\u1ecf.<\/li>\n
            • Kh\u00e1ng t\u1eeb (kh\u1ea3 n\u0103ng ch\u1ed1ng m\u1ea5t t\u1eeb)<\/strong> \u2014 kh\u1ea3 n\u0103ng c\u1ee7a nam ch\u00e2m ch\u1ed1ng l\u1ea1i vi\u1ec7c m\u1ea5t t\u1eeb do c\u00e1c tr\u01b0\u1eddng \u0111\u1ed1i l\u1eadp ho\u1eb7c nhi\u1ec7t \u0111\u1ed9 cao. Kh\u00e1ng t\u1eeb cao quan tr\u1ecdng \u0111\u1ed1i v\u1edbi \u0111\u1ed9ng c\u01a1 v\u00e0 c\u1ea3m bi\u1ebfn n\u01a1i c\u00f3 c\u00e1c tr\u01b0\u1eddng nhi\u1ec5u ho\u1eb7c t\u1ea3i \u0111\u1ea3o chi\u1ec1u. SmCo th\u01b0\u1eddng c\u00f3 kh\u00e1ng t\u1eeb cao h\u01a1n so v\u1edbi NdFeB ti\u00eau chu\u1ea9n.<\/li>\n<\/ul>\n

              Kh\u1ea3 n\u0103ng ch\u1ecbu nhi\u1ec7t<\/h3>\n
                \n
              • Nhi\u1ec7t \u0111\u1ed9 l\u00e0m gi\u1ea3m c\u01b0\u1eddng \u0111\u1ed9 t\u1eeb. T\u00f4i lu\u00f4n ki\u1ec3m tra nhi\u1ec7t \u0111\u1ed9 t\u1ed1i \u0111a ho\u1ea1t \u0111\u1ed9ng tr\u01b0\u1edbc khi \u0111\u1eb7t h\u00e0ng.<\/li>\n
              • Ph\u1ea1m vi \u0111i\u1ec3n h\u00ecnh:\n
                  \n
                • NdFeB: c\u00e1c lo\u1ea1i ti\u00eau chu\u1ea9n kho\u1ea3ng 80\u00b0C, c\u00e1c lo\u1ea1i \u0111\u1eb7c bi\u1ec7t ch\u1ecbu nhi\u1ec7t cao l\u00ean t\u1edbi kho\u1ea3ng 150\u2013200\u00b0C.<\/li>\n
                • SmCo: \u1ed5n \u0111\u1ecbnh h\u01a1n \u1edf nhi\u1ec7t \u0111\u1ed9 cao, th\u01b0\u1eddng s\u1eed d\u1ee5ng \u0111\u01b0\u1ee3c t\u1edbi kho\u1ea3ng 250\u00b0C ho\u1eb7c cao h\u01a1n.<\/li>\n<\/ul>\n<\/li>\n
                • V\u01b0\u1ee3t qu\u00e1 gi\u1edbi h\u1ea1n c\u00f3 th\u1ec3 g\u00e2y m\u1ea5t m\u1ed9t ph\u1ea7n ho\u1eb7c to\u00e0n b\u1ed9 \u0111\u1ed9 m\u1ea1nh.<\/li>\n<\/ul>\n

                  \u0102n m\u00f2n v\u00e0 m\u1ea5t t\u1eeb t\u00ednh<\/h3>\n
                    \n
                  • NdFeB ch\u1ee9a s\u1eaft n\u00ean d\u1ec5 b\u1ecb \u0103n m\u00f2n n\u1ebfu kh\u00f4ng \u0111\u01b0\u1ee3c ph\u1ee7 l\u1edbp b\u1ea3o v\u1ec7. C\u00e1c l\u1edbp ph\u1ee7 ph\u1ed5 bi\u1ebfn: Ni-Cu-Ni (k\u1ebdm), epoxy, m\u1ea1 k\u1ebdm v\u00e0 m\u1ea1 v\u00e0ng<\/strong>L\u1edbp ph\u1ee7 b\u1ea3o v\u1ec7 ch\u1ed1ng g\u1ec9 s\u00e9t v\u00e0 n\u00e2ng cao tu\u1ed5i th\u1ecd.
                    \n-Co t\u1ef1 nhi\u00ean c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n cao h\u01a1n v\u00e0 c\u1ea7n \u00edt l\u1edbp ph\u1ee7 h\u01a1n.<\/li>\n
                  • S\u1ed1c c\u01a1 h\u1ecdc, tr\u01b0\u1eddng \u0111\u1ed1i l\u1eadp m\u1ea1nh ho\u1eb7c l\u01b0u tr\u1eef kh\u00f4ng \u0111\u00fang c\u00e1ch c\u00f3 th\u1ec3 l\u00e0m m\u1ea5t t\u1eeb t\u00ednh c\u1ee7a nam ch\u00e2m.<\/li>\n<\/ul>\n

                    Nam ch\u00e2m \u0111\u1ea5t hi\u1ebfm \u0111\u01b0\u1ee3c s\u1ea3n xu\u1ea5t nh\u01b0 th\u1ebf n\u00e0o nam ch\u00e2m \u0111\u1ea5t hi\u1ebfm l\u00e0 g\u00ec<\/h2>\n

                    T\u00f4i s\u1ebd h\u01b0\u1edbng d\u1eabn b\u1ea1n quy tr\u00ecnh s\u1ea3n xu\u1ea5t nam ch\u00e2m \u0111\u1ea5t hi\u1ebfm b\u1eb1ng nh\u1eefng thu\u1eadt ng\u1eef \u0111\u01a1n gi\u1ea3n \u0111\u1ec3 b\u1ea1n hi\u1ec3u r\u00f5 nh\u1eefng g\u00ec t\u1ea1o th\u00e0nh nam ch\u00e2m \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong m\u1ecdi th\u1ee9 t\u1eeb \u0111\u1ed9ng c\u01a1 xe \u0111i\u1ec7n \u0111\u1ebfn tai nghe.<\/p>\n

                    S\u1ea3n xu\u1ea5t b\u1ed9t v\u00e0 n\u00e9n<\/h3>\n
                      \n
                    • Qu\u1eb7ng kim lo\u1ea1i th\u00f4 (th\u01b0\u1eddng ch\u1ee9a neodymium ho\u1eb7c samarium) \u0111\u01b0\u1ee3c tinh ch\u1ebf th\u00e0nh h\u1ee3p kim, sau \u0111\u00f3 phun ho\u1eb7c nghi\u1ec1n th\u00e0nh b\u1ed9t m\u1ecbn.<\/li>\n
                    • B\u1ed9t \u0111\u01b0\u1ee3c \u00e9p v\u00e0o khu\u00f4n trong khi x\u1ebfp h\u00e0ng trong m\u1ed9t tr\u01b0\u1eddng t\u1eeb \u0111\u1ec3 c\u1ea3i thi\u1ec7n h\u01b0\u1edbng h\u1ea1t, t\u1eeb \u0111\u00f3 t\u0103ng c\u01b0\u1eddng s\u1ee9c m\u1ea1nh t\u1eeb t\u00ednh (b\u01b0\u1edbc n\u00e0y quan tr\u1ecdng \u0111\u1ed1i v\u1edbi \u0111\u1eb7c t\u00ednh c\u1ee7a nam ch\u00e2m neodymium).<\/li>\n
                    • \u00c9p c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n theo ph\u01b0\u01a1ng ph\u00e1p \u0111\u1ed3ng nh\u1ea5t (\u00e1p l\u1ef1c \u0111\u1ec1u) ho\u1eb7c b\u1eb1ng \u00e9p khu\u00f4n \u0111\u1ec3 t\u1ea1o h\u00ecnh d\u1ea1ng c\u1ee5 th\u1ec3.<\/li>\n<\/ul>\n

                      Nung k\u1ebft v\u00e0 gia c\u00f4ng<\/h3>\n
                        \n
                      • Nung ch\u1ea3y: c\u00e1c b\u1ed9 ph\u1eadn \u0111\u00e3 \u00e9p \u0111\u01b0\u1ee3c nung \u1edf nhi\u1ec7t \u0111\u1ed9 th\u1ea5p h\u01a1n \u0111i\u1ec3m n\u00f3ng ch\u1ea3y \u0111\u1ec3 li\u00ean k\u1ebft c\u00e1c h\u1ea1t th\u00e0nh m\u1ed9t kh\u1ed1i r\u1eafn \u0111\u1eb7c. Qu\u00e1 tr\u00ecnh n\u00e0y t\u1ea1o ra nam ch\u00e2m nung ch\u1ea3y c\u00f3 s\u1ee9c m\u1ea1nh t\u1eeb cao v\u00e0 \u0111\u1eb7c t\u00ednh c\u01a1 h\u1ecdc t\u1ed1t.<\/li>\n
                      • Sau khi nung ch\u1ea3y, c\u00e1c b\u1ed9 ph\u1eadn \u0111\u01b0\u1ee3c gia c\u00f4ng (m\u00e0i, EDM) \u0111\u1ec3 \u0111\u1ea1t \u0111\u1ed9 ch\u00ednh x\u00e1c cao. Nam ch\u00e2m NdFeB nung ch\u1ea3y d\u1ec5 v\u1ee1, v\u00ec v\u1eady c\u1ea7n gia c\u00f4ng c\u1ea9n th\u1eadn.<\/li>\n<\/ul>\n

                        Quy tr\u00ecnh nung k\u1ebft so v\u1edbi nam ch\u00e2m li\u00ean k\u1ebft<\/h3>\n
                          \n
                        • Nam ch\u00e2m li\u00ean k\u1ebft s\u1eed d\u1ee5ng b\u1ed9t t\u1eeb \u0111\u01b0\u1ee3c tr\u1ed9n v\u1edbi ch\u1ea5t k\u1ebft d\u00ednh polymer, sau \u0111\u00f3 \u0111\u00fac phun ho\u1eb7c \u0111\u00f9n. Ch\u00fang y\u1ebfu h\u01a1n nam ch\u00e2m nung ch\u1ea3y nh\u01b0ng ph\u00f9 h\u1ee3p cho c\u00e1c h\u00ecnh d\u1ea1ng ph\u1ee9c t\u1ea1p v\u00e0 ph\u1ea7n m\u1ecfng.<\/li>\n
                        • So s\u00e1nh nhanh<\/li>\n<\/ul>\n\n\n\n\n\n\n\n\n\n
                          \u0110\u1eb7c \u0111i\u1ec3m<\/th>\nNam ch\u00e2m nung ch\u1ea3y (NdFeB\/SmCo)<\/th>\nNam Ch\u00e2m Li\u00ean K\u1ebft<\/th>\n<\/tr>\n<\/thead>\n
                          \u0110\u1ed9 m\u1ea1nh t\u1eeb tr\u01b0\u1eddng<\/td>\nR\u1ea5t cao<\/td>\nV\u1eeba ph\u1ea3i<\/td>\n<\/tr>\n
                          \u0110\u1ed9 linh ho\u1ea1t v\u1ec1 h\u00ecnh d\u1ea1ng<\/td>\nH\u1ea1n ch\u1ebf (sau gia c\u00f4ng)<\/td>\nXu\u1ea5t s\u1eafc (h\u00ecnh d\u1ea1ng ph\u1ee9c t\u1ea1p)<\/td>\n<\/tr>\n
                          Gi\u00e1 th\u00e0nh<\/td>\nChi ph\u00ed cao h\u01a1n cho m\u1ed7i b\u1ed9 ph\u1eadn<\/td>\nTh\u1ea5p h\u01a1n \u0111\u1ed1i v\u1edbi c\u00e1c b\u1ed9 ph\u1eadn ph\u1ee9c t\u1ea1p ho\u1eb7c y\u1ebfu<\/td>\n<\/tr>\n
                          \u0110\u1ed9 \u1ed5n \u0111\u1ecbnh nhi\u1ec7t<\/td>\nT\u1ed1t (t\u00f9y theo lo\u1ea1i c\u1ea5p \u0111\u1ed9)<\/td>\nTh\u1ea5p h\u01a1n<\/td>\n<\/tr>\n
                          \u1ee8ng d\u1ee5ng \u0111i\u1ec3n h\u00ecnh<\/td>\n\u0110\u1ed9ng c\u01a1, m\u00e1y ph\u00e1t \u0111i\u1ec7n, thi\u1ebft b\u1ecb ch\u00ednh x\u00e1c<\/td>\nC\u1ea3m bi\u1ebfn, th\u00e0nh ph\u1ea7n \u0111\u00fac, s\u1ea3n ph\u1ea9m ti\u00eau d\u00f9ng<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

                          Ngu\u1ed3n nguy\u00ean li\u1ec7u v\u00e0 ki\u1ec3m so\u00e1t ch\u1ea5t l\u01b0\u1ee3ng<\/h3>\n
                            \n
                          • H\u1ea7u h\u1ebft nam ch\u00e2m \u0111\u1ea5t hi\u1ebfm hi\u1ebfm b\u1eaft \u0111\u1ea7u t\u1eeb qu\u1eb7ng khai th\u00e1c \u1edf m\u1ed9t s\u1ed1 khu v\u1ef1c tr\u00ean to\u00e0n th\u1ebf gi\u1edbi; t\u1eadp trung ngu\u1ed3n cung (\u0111\u1eb7c bi\u1ec7t l\u00e0 Trung Qu\u1ed1c) \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn gi\u00e1 c\u1ea3 v\u00e0 kh\u1ea3 n\u0103ng cung c\u1ea5p.
                            \nCh\u1ea5t l\u01b0\u1ee3ng ho\u1eb7c h\u1ed7n h\u1ee3p h\u1ee3p kim kh\u00f4ng \u0111\u1ed3ng nh\u1ea5t thay \u0111\u1ed5i kh\u1ea3 n\u0103ng ch\u1ed1ng t\u1eeb v\u00e0 d\u00f2ng t\u1eeb\u2014v\u00ec v\u1eady t\u00f4i lu\u00f4n khuy\u00ean nh\u00e0 cung c\u1ea5p cung c\u1ea5p ph\u00e2n t\u00edch h\u00f3a h\u1ecdc v\u00e0 th\u00f4ng s\u1ed1 t\u1eeb t\u00ednh.<\/li>\n
                          • \u0110\u1ed1i v\u1edbi kh\u00e1ch h\u00e0ng t\u1ea1i Vi\u1ec7t Nam, ki\u1ec3m tra ch\u1ee9ng ch\u1ec9, th\u1eed nghi\u1ec7m theo l\u00f4 v\u00e0 kh\u1ea3 n\u0103ng truy xu\u1ea5t ngu\u1ed3n g\u1ed1c \u0111\u1ec3 \u0111\u00e1p \u1ee9ng nhu c\u1ea7u mua s\u1eafm v\u00e0 quy \u0111\u1ecbnh ph\u00e1p lu\u1eadt.<\/li>\n<\/ul>\n

                            Qu\u00e1 tr\u00ecnh x\u1eed l\u00fd sau ph\u1ee7 l\u1edbp t\u1eeb t\u00ednh v\u00e0 ki\u1ec3m tra<\/h3>\n
                              \n
                            • L\u1edbp ph\u1ee7 (niken, k\u1ebdm, epoxy) b\u1ea3o v\u1ec7 nam ch\u00e2m neodymium kh\u1ecfi \u0103n m\u00f2n; SmCo ch\u1ed1ng \u0103n m\u00f2n t\u1ed1t h\u01a1n nh\u01b0ng v\u1eabn c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c ph\u1ee7 l\u1edbp \u0111\u1ec3 ch\u1ed1ng m\u00e0i m\u00f2n c\u01a1 h\u1ecdc.<\/li>\n
                            • Sau khi \u0111\u1ecbnh h\u00ecnh v\u00e0 ph\u1ee7 l\u1edbp, nam ch\u00e2m \u0111\u01b0\u1ee3c t\u1eeb h\u00f3a trong thi\u1ebft b\u1ecb ki\u1ec3m so\u00e1t \u0111\u1ec3 \u0111\u1ea1t \u0111\u1ed9 m\u1ea1nh v\u00e0 c\u1ef1c t\u1eeb quy \u0111\u1ecbnh.<\/li>\n
                            • Ki\u1ec3m tra ch\u1ea5t l\u01b0\u1ee3ng bao g\u1ed3m:\n
                                \n
                              • \u0110o gauss\/tesla (\u0111\u1ed9 \u0111\u1eb7c d\u00f2ng t\u1eeb)<\/li>\n
                              • Ki\u1ec3m tra \u0111\u01b0\u1eddng cong kh\u1eed t\u1eeb (\u0111\u01b0\u1eddng cong BH)<\/li>\n
                              • Ki\u1ec3m tra k\u00edch th\u01b0\u1edbc v\u00e0 l\u1edbp ph\u1ee7<\/li>\n
                              • Chu k\u1ef3 nhi\u1ec7t \u0111\u1ec3 \u1ee9ng d\u1ee5ng nh\u1ea1y c\u1ea3m v\u1edbi nhi\u1ec7t \u0111\u1ed9<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n

                                \u1ee8ng d\u1ee5ng ph\u1ed5 bi\u1ebfn c\u1ee7a nam ch\u00e2m \u0111\u1ea5t hi\u1ebfm l\u00e0 g\u00ec<\/h2>\n

                                T\u00f4i s\u1eed d\u1ee5ng nam ch\u00e2m \u0111\u1ea5t hi\u1ebfm trong nhi\u1ec1u d\u1ef1 \u00e1n v\u00ec \u0111\u1ed9 m\u1ea1nh t\u1eeb c\u1ee7a ch\u00fang cho ph\u00e9p thu nh\u1ecf c\u00e1c b\u1ed9 ph\u1eadn m\u00e0 kh\u00f4ng m\u1ea5t c\u00f4ng su\u1ea5t, \u0111\u1eb7c bi\u1ec7t ph\u1ed5 bi\u1ebfn tr\u00ean th\u1ecb tr\u01b0\u1eddng Vi\u1ec7t Nam.<\/p>\n

                                \u0110i\u1ec7n t\u1eed<\/h3>\n
                                  \n
                                • \u1ed4 c\u1ee9ng v\u00e0 c\u1ea3m bi\u1ebfn ch\u00ednh x\u00e1c \u2014 nam ch\u00e2m neodymium m\u1ea1nh, nh\u1ecf g\u1ecdn cho ph\u00e9p l\u01b0u tr\u1eef d\u1eef li\u1ec7u v\u1edbi m\u1eadt \u0111\u1ed9 cao.<\/li>\n
                                • Microphone v\u00e0 loa \u2014 \u00e2m thanh t\u1ed1t h\u01a1n trong c\u00e1c thi\u1ebft k\u1ebf nh\u1ecf g\u1ecdn nh\u1edd \u0111\u1eb7c t\u00ednh c\u1ee7a nam ch\u00e2m neodymium.<\/li>\n
                                • B\u1ed9 truy\u1ec1n \u0111\u1ed9ng v\u00e0 thi\u1ebft b\u1ecb ch\u00ednh x\u00e1c trong robot v\u00e0 thi\u1ebft b\u1ecb \u0111o l\u01b0\u1eddng.<\/li>\n<\/ul>\n

                                  N\u0103ng l\u01b0\u1ee3ng t\u00e1i t\u1ea1o<\/h3>\n
                                    \n
                                  • M\u00e1y ph\u00e1t \u0111i\u1ec7n turbine gi\u00f3 \u2014 nam ch\u00e2m \u0111\u1ea5t hi\u1ebfm t\u0103ng hi\u1ec7u qu\u1ea3 v\u00e0 gi\u1ea3m tr\u1ecdng l\u01b0\u1ee3ng.<\/li>\n
                                  • \u0110\u1ed9ng c\u01a1 v\u00e0 h\u1ec7 truy\u1ec1n \u0111\u1ed9ng xe \u0111i\u1ec7n (EV) \u2014 nam ch\u00e2m neodymium ph\u1ed5 bi\u1ebfn cho \u0111\u1ed9ng c\u01a1 nh\u1ecf g\u1ecdn, c\u00f4ng su\u1ea5t cao.<\/li>\n
                                  • \u0110i\u1ec7n t\u1eed c\u00f4ng su\u1ea5t v\u00e0 linh ki\u1ec7n c\u00f4ng ngh\u1ec7 s\u1ea1ch n\u01a1i m\u00e0 s\u1ee9c m\u1ea1nh tr\u00ean k\u00edch th\u01b0\u1edbc quan tr\u1ecdng.<\/li>\n<\/ul>\n

                                    Thi\u1ebft b\u1ecb y t\u1ebf<\/h3>\n
                                      \n
                                    • C\u00e1c linh ki\u1ec7n MRI v\u00e0 thi\u1ebft b\u1ecb \u0111\u1ecbnh v\u1ecb (l\u01b0u \u00fd c\u00e1c nam ch\u00e2m MRI ch\u00ednh l\u00e0 si\u00eau d\u1eabn) \u2014 nam ch\u00e2m \u0111\u1ea5t hi\u1ebfm h\u1ed7 tr\u1ee3 c\u1ea3m bi\u1ebfn v\u00e0 thi\u1ebft b\u1ecb ch\u00ednh x\u00e1c.<\/li>\n
                                    • D\u1ee5ng c\u1ee5 ph\u1eabu thu\u1eadt, thi\u1ebft b\u1ecb nghe, v\u00e0 d\u1ee5ng c\u1ee5 ph\u00f2ng th\u00ed nghi\u1ec7m c\u1ea7n c\u00e1c b\u1ed9 ph\u1eadn nam ch\u00e2m nh\u1ecf, \u0111\u00e1ng tin c\u1eady.<\/li>\n<\/ul>\n

                                      \u1ee8ng d\u1ee5ng c\u00f4ng nghi\u1ec7p<\/h3>\n
                                        \n
                                      • \u0110\u1ed9ng c\u01a1 hi\u1ec7u su\u1ea5t cao, b\u1ed9 truy\u1ec1n \u0111\u1ed9ng servo, v\u00e0 m\u00e1y ph\u00e1t \u0111i\u1ec7n \u2014 \u00edt v\u1eadt li\u1ec7u h\u01a1n cho c\u00f9ng m\u1ed9t c\u00f4ng su\u1ea5t.<\/li>\n
                                      • M\u00e1y t\u00e1ch t\u1eeb, b\u1ed9 truy\u1ec1n \u0111\u1ed9ng, v\u00e0 k\u1eb9p d\u00f9ng trong x\u01b0\u1edfng v\u00e0 nh\u00e0 m\u00e1y ch\u1ebf bi\u1ebfn.<\/li>\n
                                      • T\u1ef1 \u0111\u1ed9ng h\u00f3a v\u00e0 robot n\u01a1i tr\u1ecdng l\u01b0\u1ee3ng v\u00e0 hi\u1ec7u su\u1ea5t quan tr\u1ecdng.<\/li>\n<\/ul>\n

                                        S\u1ea3n ph\u1ea9m ti\u00eau d\u00f9ng<\/h3>\n
                                          \n
                                        • Tai nghe, tai nghe nh\u00e9t tai, v\u00e0 loa di \u0111\u1ed9ng \u2014 h\u1ec7 th\u1ed1ng \u00e2m thanh nh\u1ecf g\u1ecdn s\u1eed d\u1ee5ng nam ch\u00e2m neodymium.<\/li>\n
                                        • Ph\u1ee5 ki\u1ec7n nam ch\u00e2m, kh\u00f3a, \u0111\u1ed3 ch\u01a1i, v\u00e0 d\u1ee5ng c\u1ee5 h\u00e0ng ng\u00e0y \u2014 gi\u1eef ch\u1eb7t m\u1ea1nh trong k\u00edch th\u01b0\u1edbc nh\u1ecf.<\/li>\n<\/ul>\n

                                          Ghi ch\u00fa nhanh<\/p>\n

                                            \n
                                          • \u0110\u1ed1i v\u1edbi m\u00f4i tr\u01b0\u1eddng nhi\u1ec7t \u0111\u1ed9 cao ho\u1eb7c \u0103n m\u00f2n, xem x\u00e9t s\u1eed d\u1ee5ng nam ch\u00e2m samarium cobalt \u0111\u1ec3 c\u00f3 \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh t\u1ed1t h\u01a1n.<\/li>\n
                                          • N\u1ebfu chi ph\u00ed ho\u1eb7c ngu\u1ed3n cung l\u00e0 m\u1ed1i quan t\u00e2m, so s\u00e1nh nam ch\u00e2m \u0111\u1ea5t hi\u1ebfm v\u00e0 nam ch\u00e2m ferrite \u0111\u1ec3 c\u00f3 gi\u00e1 th\u1ea5p h\u01a1n v\u00e0 kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n.<\/li>\n
                                          • T\u00f4i khuy\u00ean b\u1ea1n n\u00ean ki\u1ec3m tra th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt c\u1ee7a nh\u00e0 cung c\u1ea5p v\u00e0 chi ti\u1ebft quy tr\u00ecnh s\u1ea3n xu\u1ea5t tr\u01b0\u1edbc khi mua, \u0111\u1eb7c bi\u1ec7t khi mua t\u1eeb nh\u00e0 cung c\u1ea5p nam ch\u00e2m \u0111\u1ea5t hi\u1ebfm t\u1ea1i Vi\u1ec7t Nam.<\/li>\n<\/ul>\n

                                            \u01afu \u0111i\u1ec3m v\u00e0 h\u1ea1n ch\u1ebf<\/h2>\n

                                            T\u00f4i s\u1eed d\u1ee5ng nam ch\u00e2m \u0111\u1ea5t hi\u1ebfm r\u1ea5t nhi\u1ec1u trong thi\u1ebft k\u1ebf nh\u1edd hi\u1ec7u su\u1ea5t v\u01b0\u1ee3t tr\u1ed9i c\u1ee7a ch\u00fang, nh\u01b0ng \u0111i k\u00e8m v\u1edbi nh\u1eefng h\u1ea1n ch\u1ebf. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 c\u00e1i nh\u00ecn r\u00f5 r\u00e0ng v\u1ec1 l\u00fd do t\u1ea1i sao b\u1ea1n c\u00f3 th\u1ec3 ch\u1ecdn ch\u00fang \u2014 v\u00e0 nh\u1eefng \u0111i\u1ec1u c\u1ea7n l\u01b0u \u00fd.<\/p>\n

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

                                              \n
                                            • \u0110\u1ed9 m\u1ea1nh tr\u00ean k\u00edch th\u01b0\u1edbc cao nh\u1ea5t<\/strong>: Nam ch\u00e2m neodymium (NdFeB) cung c\u1ea5p l\u1ef1c t\u1eeb m\u1ea1nh h\u01a1n nhi\u1ec1u so v\u1edbi ferrite ho\u1eb7c alnico c\u00f9ng th\u1ec3 t\u00edch, gi\u00fap b\u1ea1n thu nh\u1ecf \u0111\u1ed9ng c\u01a1, c\u1ea3m bi\u1ebfn, v\u00e0 loa.<\/li>\n
                                            • Hi\u1ec7u su\u1ea5t t\u1ed1t h\u01a1n cho c\u00e1c thi\u1ebft k\u1ebf nh\u1ecf g\u1ecdn<\/strong>: C\u00e1c b\u1ed9 ph\u1eadn nh\u1ecf, m\u00f4-men xo\u1eafn cao, ho\u1eb7c \u0111\u1ed9 ch\u00ednh x\u00e1c ch\u1eb7t ch\u1ebd l\u00e0 n\u01a1i nam ch\u00e2m \u0111\u1ea5t hi\u1ebfm th\u1ec3 hi\u1ec7n r\u00f5 nh\u1ea5t.<\/li>\n
                                            • Kh\u1ea3 n\u0103ng ch\u1ed1ng t\u1eeb v\u00e0 \u0111\u1ed9 gi\u1eef t\u1eeb t\u1ed1t<\/strong>: Ch\u00fang gi\u1eef t\u1eeb t\u00ednh t\u1ed1t, c\u00f3 ngh\u0129a l\u00e0 hi\u1ec7u su\u1ea5t l\u00e2u d\u00e0i \u0111\u00e1ng tin c\u1eady trong nhi\u1ec1u \u1ee9ng d\u1ee5ng \u0111i\u1ec7n t\u1eed v\u00e0 c\u00f4ng nghi\u1ec7p.<\/li>\n
                                            • C\u00e1c lo\u1ea1i v\u00e0 t\u00f9y ch\u1ecdn \u0111\u1eb7c bi\u1ec7t<\/strong>: c\u00f3 th\u1ec3 ch\u1ecdn nam ch\u00e2m SmCo ch\u1ecbu nhi\u1ec7t cao ho\u1eb7c c\u00e1c lo\u1ea1i NdFeB kh\u00e1c nhau \u0111\u1ec3 t\u1ed1i \u0111a h\u00f3a s\u1ee9c m\u1ea1nh ho\u1eb7c c\u00e2n \u0111\u1ed1i chi ph\u00ed.<\/li>\n<\/ul>\n

                                              H\u1ea1n ch\u1ebf<\/p>\n

                                                \n
                                              • Chi ph\u00ed v\u00e0 bi\u1ebfn \u0111\u1ed9ng gi\u00e1 c\u1ea3<\/strong>: Gi\u00e1 c\u1ee7a nam ch\u00e2m \u0111\u1ea5t hi\u1ebfm c\u00f3 th\u1ec3 dao \u0111\u1ed9ng theo th\u1ecb tr\u01b0\u1eddng nguy\u00ean li\u1ec7u th\u00f4 v\u00e0 nhu c\u1ea7u to\u00e0n c\u1ea7u. \u0110\u1ed1i v\u1edbi kh\u00e1ch h\u00e0ng t\u1ea1i Vi\u1ec7t Nam, d\u1ef1 ki\u1ebfn s\u1ebd c\u00f3 b\u00e1o gi\u00e1 bi\u1ebfn \u0111\u1ed9ng v\u00e0 th\u1eddi gian l\u1eadp k\u1ebf ho\u1ea1ch linh ho\u1ea1t.<\/li>\n
                                              • T\u1eadp trung cung \u1ee9ng<\/strong>: Ph\u1ea7n l\u1edbn qu\u00e1 tr\u00ecnh ch\u1ebf bi\u1ebfn \u0111\u1ea5t hi\u1ebfm t\u1eadp trung \u1edf n\u01b0\u1edbc ngo\u00e0i, \u0111i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn th\u1eddi gian giao h\u00e0ng v\u00e0 logistics. L\u00e0m vi\u1ec7c v\u1edbi nh\u00e0 cung c\u1ea5p \u0111\u00e1ng tin c\u1eady s\u1ebd gi\u00fap \u00edch\u2014h\u00e3y xem x\u00e9t h\u1ee3p t\u00e1c v\u1edbi c\u00e1c \u0111\u1ed1i t\u00e1c nh\u01b0 NBAEM \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o ngu\u1ed3n cung \u1ed5n \u0111\u1ecbnh v\u00e0 h\u1ed7 tr\u1ee3 t\u1ed1t nh\u1ea5t.<\/li>\n
                                              • \u0102n m\u00f2n v\u00e0 d\u1ec5 v\u1ee1<\/strong>: M\u1ed9t s\u1ed1 lo\u1ea1i (\u0111\u1eb7c bi\u1ec7t l\u00e0 NdFeB kh\u00f4ng ph\u1ee7 l\u1edbp) c\u1ea7n l\u1edbp ph\u1ee7 b\u1ea3o v\u1ec7 ho\u1eb7c epoxy; ch\u00fang c\u0169ng d\u1ec5 v\u1ee1 h\u01a1n ferrite v\u00e0 c\u00f3 th\u1ec3 b\u1ecb s\u1ee9t m\u1ebb n\u1ebfu x\u1eed l\u00fd kh\u00f4ng c\u1ea9n th\u1eadn.<\/li>\n
                                              • Gi\u1edbi h\u1ea1n nhi\u1ec7t \u0111\u1ed9<\/strong>: \u0110\u1ed9 m\u1ea1nh c\u1ee7a neodymium \u1edf nhi\u1ec7t \u0111\u1ed9 cao; SmCo ph\u00f9 h\u1ee3p h\u01a1n cho s\u1eed d\u1ee5ng \u1edf nhi\u1ec7t \u0111\u1ed9 cao nh\u01b0ng c\u00f3 chi ph\u00ed cao h\u01a1n.<\/li>\n<\/ul>\n

                                                Quan ng\u1ea1i v\u1ec1 m\u00f4i tr\u01b0\u1eddng v\u00e0 b\u1ec1n v\u1eefng<\/p>\n

                                                  \n
                                                • \u1ea2nh h\u01b0\u1edfng khai th\u00e1c<\/strong>: Vi\u1ec7c khai th\u00e1c \u0111\u1ea5t hi\u1ebfm g\u00e2y ra c\u00e1c t\u00e1c \u0111\u1ed9ng m\u00f4i tr\u01b0\u1eddng c\u1ee5c b\u1ed9\u2014s\u1eed d\u1ee5ng n\u01b0\u1edbc, ch\u1ea5t th\u1ea3i v\u00e0 x\u00e1o tr\u1ed9n \u0111\u1ea5t \u0111ai l\u00e0 nh\u1eefng v\u1ea5n \u0111\u1ec1 quan tr\u1ecdng \u0111\u1ed1i v\u1edbi c\u1ed9ng \u0111\u1ed3ng v\u00e0 ng\u01b0\u1eddi mua.<\/li>\n
                                                • Th\u00e1ch th\u1ee9c t\u00e1i ch\u1ebf<\/strong>: Kh\u1ea3 n\u0103ng thu h\u1ed3i \u0111\u1ea5t hi\u1ebfm t\u1eeb nam ch\u00e2m l\u00e0 c\u00f3 th\u1ec3 nh\u01b0ng ph\u1ee9c t\u1ea1p v\u00e0 ch\u01b0a ph\u1ed5 bi\u1ebfn r\u1ed9ng r\u00e3i t\u1ea1i Vi\u1ec7t Nam. \u0110i\u1ec1u n\u00e0y l\u00e0m cho vi\u1ec7c l\u1eadp k\u1ebf ho\u1ea1ch cu\u1ed1i v\u00f2ng \u0111\u1eddi s\u1ea3n ph\u1ea9m tr\u1edf n\u00ean quan tr\u1ecdng \u0111\u1ed1i v\u1edbi c\u00e1c d\u1ef1 \u00e1n l\u1edbn.<\/li>\n
                                                • L\u1ef1a ch\u1ecdn thay th\u1ebf v\u00e0 \u0111\u00e1nh \u0111\u1ed5i<\/strong>: V\u00ec l\u00fd do chi ph\u00ed ho\u1eb7c b\u1ec1n v\u1eefng, nam ch\u00e2m li\u00ean k\u1ebft ho\u1eb7c nam ch\u00e2m ferrite c\u00f3 th\u1ec3 l\u00e0 c\u00e1c l\u1ef1a ch\u1ecdn thay th\u1ebf kh\u1ea3 thi. Ki\u1ec3m tra c\u00e1c t\u00f9y ch\u1ecdn v\u00e0 th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt c\u1ee7a nam ch\u00e2m li\u00ean k\u1ebft \u0111\u1ec3 xem ch\u00fang c\u00f3 ph\u00f9 h\u1ee3p v\u1edbi y\u00eau c\u1ea7u thi\u1ebft k\u1ebf c\u1ee7a b\u1ea1n kh\u00f4ng.<\/li>\n<\/ul>\n

                                                  N\u1ebfu b\u1ea1n \u0111ang c\u00e2n nh\u1eafc gi\u1eefa hi\u1ec7u su\u1ea5t, ng\u00e2n s\u00e1ch v\u00e0 ngu\u1ed3n cung cho d\u1ef1 \u00e1n t\u1ea1i Vi\u1ec7t Nam, t\u00f4i khuy\u00ean b\u1ea1n n\u00ean x\u00e1c \u0111\u1ecbnh r\u00f5 lo\u1ea1i c\u1ea5p, nhi\u1ec7t \u0111\u1ed9 ho\u1ea1t \u0111\u1ed9ng t\u1ed1i \u0111a v\u00e0 l\u1edbp b\u1ea3o v\u1ec7 ch\u1ed1ng \u0103n m\u00f2n ngay t\u1eeb \u0111\u1ea7u\u2014v\u00e0 h\u1ee3p t\u00e1c v\u1edbi c\u00e1c nh\u00e0 cung c\u1ea5p cung c\u1ea5p th\u1eddi gian giao h\u00e0ng r\u00f5 r\u00e0ng v\u00e0 d\u1eef li\u1ec7u ch\u1ea5t l\u01b0\u1ee3ng.<\/p>\n

                                                  C\u00e1ch ch\u1ecdn nam ch\u00e2m \u0111\u1ea5t hi\u1ebfm ph\u00f9 h\u1ee3p v\u1edbi nhu c\u1ea7u c\u1ee7a b\u1ea1n l\u00e0 g\u00ec<\/h2>\n

                                                  T\u00f4i gi\u00fap \u0111\u1ee1 nhi\u1ec1u kh\u00e1ch h\u00e0ng t\u1ea1i Vi\u1ec7t Nam ch\u1ecdn nam ch\u00e2m m\u1ed7i tu\u1ea7n. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 h\u01b0\u1edbng d\u1eabn \u0111\u01a1n gi\u1ea3n v\u1ec1 nh\u1eefng \u0111i\u1ec1u quan tr\u1ecdng nh\u1ea5t c\u1ea7n ki\u1ec3m tra v\u00e0 c\u00e1ch ph\u00f9 h\u1ee3p nam ch\u00e2m v\u1edbi c\u00e1c m\u1ee5c \u0111\u00edch s\u1eed d\u1ee5ng ph\u1ed5 bi\u1ebfn.<\/p>\n

                                                  C\u00e1c y\u1ebfu t\u1ed1 ch\u00ednh c\u1ea7n xem x\u00e9t<\/h3>\n
                                                    \n
                                                  • \u0110\u1ed9 m\u1ea1nh t\u1eeb v\u00e0 c\u1ea5p \u0111\u1ed9\n
                                                      \n
                                                    • Xem x\u00e9t Br (\u0111\u1ed9 t\u1eeb d\u01b0) v\u00e0 BHmax; gi\u00e1 tr\u1ecb cao h\u01a1n c\u00f3 ngh\u0129a l\u00e0 nam ch\u00e2m m\u1ea1nh h\u01a1n so v\u1edbi k\u00edch th\u01b0\u1edbc c\u1ee7a n\u00f3. \u0110i\u1ec1u n\u00e0y bao g\u1ed3m c\u00e1c \u0111\u1eb7c t\u00ednh c\u1ee7a nam ch\u00e2m \u0111\u1ea5t hi\u1ebfm v\u00e0 s\u1ee9c m\u1ea1nh t\u1eeb tr\u01b0\u1eddng t\u1ed5ng th\u1ec3 c\u1ee7a nam ch\u00e2m \u0111\u1ea5t hi\u1ebfm.<\/li>\n<\/ul>\n<\/li>\n
                                                    • \u0110\u1ed9 c\u1ee9ng ch\u1ed1ng t\u1eeb v\u00e0 kh\u1ea3 n\u0103ng ch\u1ed1ng m\u1ea5t t\u1eeb\n
                                                        \n
                                                      • \u0110\u1ed9 c\u1ee9ng ch\u1ed1ng t\u1eeb cao (Hci\/Hcb) quan tr\u1ecdng n\u1ebfu nam ch\u00e2m s\u1ebd \u0111\u1ed1i m\u1eb7t v\u1edbi tr\u01b0\u1eddng m\u1ea1nh ho\u1eb7c va \u0111\u1eadp. Nam ch\u00e2m samari cobalt th\u01b0\u1eddng v\u01b0\u1ee3t tr\u1ed9i \u1edf \u0111\u00e2y.<\/li>\n<\/ul>\n<\/li>\n
                                                      • Nhi\u1ec7t \u0111\u1ed9 ho\u1ea1t \u0111\u1ed9ng t\u1ed1i \u0111a\n
                                                          \n
                                                        • NdFeB m\u1ea5t \u0111\u1ed9 m\u1ea1nh tr\u00ean ~80\u2013150\u00b0C t\u00f9y theo lo\u1ea1i; SmCo ho\u1ea1t \u0111\u1ed9ng t\u1edbi tr\u00ean 300\u00b0C+. Ch\u1ecdn d\u1ef1a tr\u00ean nhi\u1ec7t \u0111\u1ed9 v\u1eadn h\u00e0nh c\u1ee7a b\u1ea1n.<\/li>\n<\/ul>\n<\/li>\n
                                                        • K\u00edch th\u01b0\u1edbc, h\u00ecnh d\u1ea1ng v\u00e0 h\u01b0\u1edbng t\u1eeb h\u00f3a\n
                                                            \n
                                                          • \u0110\u0129a m\u1ecfng, kh\u1ed1i, v\u00f2ng ho\u1eb7c h\u00ecnh d\u1ea1ng t\u00f9y ch\u1ec9nh thay \u0111\u1ed5i tr\u01b0\u1eddng t\u1eeb. C\u00e1c dung sai \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn \u0111\u1ed9 v\u1eeba v\u1eb7n v\u00e0 hi\u1ec7u su\u1ea5t.<\/li>\n<\/ul>\n<\/li>\n
                                                          • L\u1edbp ph\u1ee7 v\u00e0 ch\u1ed1ng \u0103n m\u00f2n\n
                                                              \n
                                                            • NiCuNi, epoxy, k\u1ebdm ho\u1eb7c parylene ng\u0103n r\u1ec9 s\u00e9t tr\u00ean NdFeB. Y\u00eau c\u1ea7u th\u00f4ng s\u1ed1 l\u1edbp ph\u1ee7 n\u1ebfu d\u00f9ng ngo\u00e0i tr\u1eddi ho\u1eb7c trong m\u00f4i tr\u01b0\u1eddng \u1ea9m \u01b0\u1edbt t\u1ea1i Vi\u1ec7t Nam.<\/li>\n<\/ul>\n<\/li>\n
                                                            • Gi\u1edbi h\u1ea1n c\u01a1 kh\u00ed v\u00e0 s\u1ea3n xu\u1ea5t\n
                                                                \n
                                                              • Nam ch\u00e2m nung k\u1ebft d\u1ec5 v\u1ee1. Nam ch\u00e2m li\u00ean k\u1ebft b\u1ec1n h\u01a1n nh\u01b0ng y\u1ebfu h\u01a1n. C\u00e2n nh\u1eafc nhu c\u1ea7u gia c\u00f4ng v\u00e0 l\u1eafp r\u00e1p.<\/li>\n<\/ul>\n<\/li>\n
                                                              • Chu\u1ed7i cung \u1ee9ng v\u00e0 ch\u1ee9ng nh\u1eadn\n
                                                                  \n
                                                                • Y\u00eau c\u1ea7u ch\u1ee9ng ch\u1ec9 v\u1eadt li\u1ec7u, RoHS\/REACH v\u00e0 b\u00e1o c\u00e1o ki\u1ec3m tra l\u00f4 h\u00e0ng, \u0111\u1eb7c bi\u1ec7t khi mua t\u1eeb nh\u00e0 cung c\u1ea5p.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n

                                                                  N\u01a1i mua nam ch\u00e2m \u0111\u1ea5t hi\u1ebfm l\u00e0 g\u00ec<\/h2>\n

                                                                  T\u1ea1i sao ch\u1ecdn NBAEM<\/h3>\n

                                                                  Ch\u00fang t\u00f4i cung c\u1ea5p nam ch\u00e2m kim lo\u1ea1i \u0111\u1ea5t hi\u1ebfm t\u1eeb Trung Qu\u1ed1c t\u1eadp trung v\u00e0o kh\u00e1ch h\u00e0ng t\u1ea1i Vi\u1ec7t Nam c\u1ea7n linh ki\u1ec7n \u0111\u00e1ng tin c\u1eady, th\u00f4ng s\u1ed1 r\u00f5 r\u00e0ng v\u00e0 ph\u1ea3n h\u1ed3i nhanh. L\u00e0 nh\u00e0 cung c\u1ea5p c\u00f3 h\u1ed7 tr\u1ee3 t\u1eeb nh\u00e0 m\u00e1y, ch\u00fang t\u00f4i x\u1eed l\u00fd s\u1ea3n xu\u1ea5t, ki\u1ec3m tra v\u00e0 xu\u1ea5t kh\u1ea9u \u2014 gi\u00fap b\u1ea1n c\u00f3 c\u00e1c \u0111\u1eb7c t\u00ednh nam ch\u00e2m neodymium nh\u1ea5t qu\u00e1n v\u00e0 c\u00e1c l\u1ef1a ch\u1ecdn samari cobalt m\u00e0 kh\u00f4ng lo l\u1eafng v\u1ec1 trung gian. T\u00ecm hi\u1ec3u th\u00eam v\u1ec1 c\u00f4ng ty ch\u00fang t\u00f4i t\u1ea1i NBAEM, nh\u00e0 cung c\u1ea5p nam ch\u00e2m neodymium t\u1ed1t nh\u1ea5t t\u1eeb Trung Qu\u1ed1c.<\/p>\n

                                                                  Ch\u1ee9ng ch\u1ec9 v\u00e0 s\u1eb5n s\u00e0ng xu\u1ea5t kh\u1ea9u<\/h3>\n
                                                                    \n
                                                                  • S\u1ea3n xu\u1ea5t t\u1ea1i nh\u00e0 m\u00e1y v\u1edbi kinh nghi\u1ec7m xu\u1ea5t kh\u1ea9u sang th\u1ecb tr\u01b0\u1eddng Vi\u1ec7t Nam<\/li>\n
                                                                  • Gia c\u00f4ng v\u00e0 t\u1ea1o m\u1eabu n\u1ed9i b\u1ed9 cho c\u00e1c h\u00ecnh d\u1ea1ng t\u00f9y ch\u1ec9nh v\u00e0 nam ch\u00e2m li\u00ean k\u1ebft so v\u1edbi nung k\u1ebft<\/li>\n
                                                                  • H\u1ed7 tr\u1ee3 k\u1ef9 thu\u1eadt n\u00f3i ti\u1ebfng Anh \u0111\u1ec3 gi\u00fap \u0111\u00e1p \u1ee9ng c\u00e1c ti\u00eau chu\u1ea9n v\u00e0 c\u00e2u h\u1ecfi \u1ee9ng d\u1ee5ng t\u1ea1i Vi\u1ec7t Nam<\/li>\n<\/ul>\n

                                                                    \u0110\u1ea3m b\u1ea3o ch\u1ea5t l\u01b0\u1ee3ng v\u00e0 ch\u1ee9ng nh\u1eadn<\/h3>\n

                                                                    Ch\u1edd \u0111\u1ee3i c\u00e1c ki\u1ec3m tra ch\u1ea5t l\u01b0\u1ee3ng v\u00e0 b\u00e1o c\u00e1o th\u1eed nghi\u1ec7m \u0111\u00e3 \u0111\u01b0\u1ee3c ghi nh\u1eadn:<\/p>\n

                                                                      \n
                                                                    • Ch\u1ee9ng ch\u1ec9 v\u1eadt li\u1ec7u v\u00e0 ki\u1ec3m tra th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc<\/li>\n
                                                                    • Ki\u1ec3m tra t\u1eeb tr\u01b0\u1eddng (Gauss, \u0111\u01b0\u1eddng cong BH) v\u00e0 ki\u1ec3m tra k\u00edch th\u01b0\u1edbc<\/li>\n
                                                                    • Ch\u1ee9ng nh\u1eadn ph\u1ed5 bi\u1ebfn: h\u1ec7 th\u1ed1ng ch\u1ea5t l\u01b0\u1ee3ng ISO, tu\u00e2n th\u1ee7 RoHS v\u00e0 REACH khi c\u1ea7n thi\u1ebft
                                                                      \nCh\u00fang t\u00f4i c\u0169ng cung c\u1ea5p h\u01b0\u1edbng d\u1eabn v\u1ec1 ch\u1ed1ng \u0103n m\u00f2n v\u00e0 l\u1edbp ph\u1ee7 ph\u00f9 h\u1ee3p v\u1edbi m\u00f4i tr\u01b0\u1eddng ho\u1ea1t \u0111\u1ed9ng c\u1ee7a b\u1ea1n. Xem ghi ch\u00fa c\u1ee7a ch\u00fang t\u00f4i v\u1ec1 nam ch\u00e2m neodymium ch\u1ea5t l\u01b0\u1ee3ng cao \u0111\u1ec3 bi\u1ebft th\u00eam chi ti\u1ebft.<\/li>\n<\/ul>\n

                                                                      Gi\u00e1 c\u1ea3 c\u1ea1nh tranh v\u00e0 \u0111\u1ed9 tin c\u1eady c\u1ee7a chu\u1ed7i cung \u1ee9ng<\/h3>\n

                                                                      Ch\u00fang t\u00f4i c\u00e2n b\u1eb1ng gi\u1eefa gi\u00e1 c\u1ea3 v\u00e0 th\u1eddi gian giao h\u00e0ng cho kh\u00e1ch h\u00e0ng t\u1ea1i Vi\u1ec7t Nam:<\/p>\n

                                                                        \n
                                                                      • Th\u1eddi gian giao h\u00e0ng \u0111i\u1ec3n h\u00ecnh: m\u1eabu nguy\u00ean m\u1eabu trong v\u00e0i ng\u00e0y \u0111\u1ebfn v\u00e0i tu\u1ea7n, c\u00e1c l\u00f4 s\u1ea3n xu\u1ea5t trong v\u00e0i tu\u1ea7n t\u00f9y thu\u1ed9c v\u00e0o kh\u1ed1i l\u01b0\u1ee3ng v\u00e0 lo\u1ea1i nam ch\u00e2m<\/li>\n
                                                                      • MOQ: linh ho\u1ea1t cho nhi\u1ec1u b\u1ed9 ph\u1eadn \u2014 b\u00e1o gi\u00e1 cho c\u00e1c l\u00f4 nh\u1ecf \u0111\u1ec3 nghi\u00ean c\u1ee9u v\u00e0 ph\u00e1t tri\u1ec3n (R&D) v\u00e0 gi\u00e1 c\u1ea3 theo quy m\u00f4 cho s\u1ea3n xu\u1ea5t<\/li>\n
                                                                      • V\u1eadn chuy\u1ec3n: c\u00e1c l\u1ef1a ch\u1ecdn h\u00e0ng kh\u00f4ng, \u0111\u01b0\u1eddng bi\u1ec3n v\u00e0 chuy\u1ec3n ph\u00e1t nhanh; \u0111\u00f3ng g\u00f3i \u0111\u1ea1t ti\u00eau chu\u1ea9n xu\u1ea5t kh\u1ea9u \u0111\u1ec3 tr\u00e1nh h\u01b0 h\u1ecfng v\u00e0 m\u1ea5t t\u1eeb t\u00ednh trong qu\u00e1 tr\u00ecnh v\u1eadn chuy\u1ec3n<\/li>\n<\/ul>\n

                                                                        D\u1ecbch v\u1ee5 kh\u00e1ch h\u00e0ng v\u00e0 h\u1ed7 tr\u1ee3 k\u1ef9 thu\u1eadt<\/h3>\n

                                                                        Ch\u00fang t\u00f4i l\u00e0m vi\u1ec7c c\u00f9ng c\u00e1c k\u1ef9 s\u01b0 s\u1ea3n ph\u1ea9m v\u00e0 \u0111\u1ed9i ng\u0169 mua h\u00e0ng \u0111\u1ec3 ch\u1ecdn \u0111\u00fang lo\u1ea1i nam ch\u00e2m:<\/p>\n

                                                                          \n
                                                                        • T\u01b0 v\u1ea5n v\u1ec1 \u1ee9ng d\u1ee5ng v\u1ec1 c\u01b0\u1eddng \u0111\u1ed9 t\u1eeb, \u0111\u1ed9 c\u01b0\u1ee1ng t\u1eeb v\u00e0 nhi\u1ec7t \u0111\u1ed9 ho\u1ea1t \u0111\u1ed9ng t\u1ed1i \u0111a<\/li>\n
                                                                        • H\u1ed7 tr\u1ee3 v\u1ec1 h\u01b0\u1edbng t\u1eeb h\u00f3a, l\u1edbp ph\u1ee7 v\u00e0 c\u00e1c v\u1ea5n \u0111\u1ec1 l\u1eafp r\u00e1p<\/li>\n
                                                                        • H\u1ed7 tr\u1ee3 sau b\u00e1n h\u00e0ng: thay th\u1ebf, x\u1eed l\u00fd b\u1ea3o h\u00e0nh v\u00e0 kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1<\/li>\n<\/ul>\n

                                                                          C\u00e1c nghi\u00ean c\u1ee9u \u0111i\u1ec3n h\u00ecnh v\u00e0 tham kh\u1ea3o<\/h3>\n

                                                                          Ch\u00fang t\u00f4i chia s\u1ebb c\u00e1c v\u00ed d\u1ee5 th\u1ef1c t\u1ebf v\u1ec1 \u1ee9ng d\u1ee5ng v\u00e0 c\u00e1c v\u1ea5n \u0111\u1ec1 \u0111\u00e3 gi\u1ea3i quy\u1ebft trong qu\u00e1 kh\u1ee9 theo y\u00eau c\u1ea7u \u2014 t\u1eeb c\u00e1c gi\u1ea3i ph\u00e1p n\u00e2ng t\u1eeb tr\u01b0\u1eddng \u0111\u1ebfn c\u00e1c th\u00e0nh ph\u1ea7n loa v\u00e0 \u0111\u1ed9ng c\u01a1. \u0110\u1ec3 xem c\u00e1c v\u00ed d\u1ee5 v\u1ec1 n\u00e2ng c\u00f4ng nghi\u1ec7p, h\u00e3y ki\u1ec3m tra trang c\u00e1c b\u1ed9 n\u00e2ng t\u1eeb tr\u01b0\u1eddng c\u1ee7a ch\u00fang t\u00f4i. N\u1ebfu b\u1ea1n c\u1ea7n t\u00e0i li\u1ec7u tham kh\u1ea3o ho\u1eb7c d\u1eef li\u1ec7u th\u1eed nghi\u1ec7m m\u1eabu, h\u00e3y h\u1ecfi ch\u00fang t\u00f4i v\u00e0 ch\u00fang t\u00f4i s\u1ebd cung c\u1ea5p nh\u1eefng g\u00ec b\u1ea1n c\u1ea7n \u0111\u1ec3 x\u00e1c nh\u1eadn hi\u1ec7u su\u1ea5t tr\u01b0\u1edbc khi mua.<\/p>","protected":false},"excerpt":{"rendered":"

                                                                          Nam ch\u00e2m \u0111\u1ea5t hi\u1ebfm l\u00e0 g\u00ec? T\u00ecm hi\u1ec3u v\u1ec1 neodymium v\u00e0 samarium cobalt, \u0111\u1ed9 m\u1ea1nh, kh\u1ea3 n\u0103ng ch\u1ecbu nhi\u1ec7t, ch\u1ed1ng \u0103n m\u00f2n v\u00e0 c\u00e1c \u1ee9ng d\u1ee5ng h\u00e0ng \u0111\u1ea7u t\u1eeb NBAEM<\/p>","protected":false},"author":1,"featured_media":1844,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_mi_skip_tracking":false,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-1856","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"jetpack_featured_media_url":"https:\/\/nbaem.com\/wp-content\/uploads\/2025\/08\/Premium_Magnetic_Materials_Quality_NBAEMs_Hbp.webp","_links":{"self":[{"href":"https:\/\/nbaem.com\/vi\/wp-json\/wp\/v2\/posts\/1856","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/nbaem.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/nbaem.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/nbaem.com\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/nbaem.com\/vi\/wp-json\/wp\/v2\/comments?post=1856"}],"version-history":[{"count":3,"href":"https:\/\/nbaem.com\/vi\/wp-json\/wp\/v2\/posts\/1856\/revisions"}],"predecessor-version":[{"id":1863,"href":"https:\/\/nbaem.com\/vi\/wp-json\/wp\/v2\/posts\/1856\/revisions\/1863"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/nbaem.com\/vi\/wp-json\/wp\/v2\/media\/1844"}],"wp:attachment":[{"href":"https:\/\/nbaem.com\/vi\/wp-json\/wp\/v2\/media?parent=1856"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/nbaem.com\/vi\/wp-json\/wp\/v2\/categories?post=1856"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/nbaem.com\/vi\/wp-json\/wp\/v2\/tags?post=1856"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}