{"id":20475,"date":"2025-01-27T04:05:00","date_gmt":"2025-01-26T20:05:00","guid":{"rendered":"https:\/\/steelprogroup.com\/?p=20475"},"modified":"2025-01-21T10:15:09","modified_gmt":"2025-01-21T02:15:09","slug":"magnetic-2","status":"publish","type":"post","link":"https:\/\/steelprogroup.com\/vi\/tool-steel\/properties\/magnetic\/","title":{"rendered":"Th\u00e9p d\u1ee5ng c\u1ee5 c\u00f3 t\u1eeb t\u00ednh kh\u00f4ng?"},"content":{"rendered":"

C\u00f3, h\u1ea7u h\u1ebft th\u00e9p c\u00f4ng c\u1ee5 \u0111\u1ec1u c\u00f3 t\u1eeb t\u00ednh. Th\u00e9p c\u00f4ng c\u1ee5 l\u00e0 nh\u00f3m v\u1eadt li\u1ec7u cacbon v\u00e0 h\u1ee3p kim \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 ch\u1ecbu \u0111\u01b0\u1ee3c \u1ee9ng su\u1ea5t l\u1edbn, gi\u1eef \u0111\u01b0\u1ee3c \u0111\u1ed9 c\u1ee9ng d\u01b0\u1edbi nhi\u1ec7t \u0111\u1ed9 cao v\u00e0 c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng m\u00e0i m\u00f2n tuy\u1ec7t v\u1eddi.<\/p>

\u0110i\u1ec1u g\u00ec l\u00e0m cho th\u00e9p c\u00f4ng c\u1ee5 c\u00f3 t\u1eeb t\u00ednh?<\/h2>

Ch\u00fang t\u00f4i bi\u1ebft r\u1eb1ng t\u00ednh t\u1eeb c\u1ee7a th\u00e9p c\u00f4ng c\u1ee5 ph\u1ee5 thu\u1ed9c v\u00e0o h\u1ed7n h\u1ee3p th\u00e0nh ph\u1ea7n \u0111\u1eb7c bi\u1ec7t v\u00e0 c\u00e1ch x\u1eed l\u00fd c\u1ee7a n\u00f3. <\/p>

H\u00e0m l\u01b0\u1ee3ng s\u1eaft cao<\/h3>

Th\u00e9p c\u00f4ng c\u1ee5 ch\u1ee7 y\u1ebfu bao g\u1ed3m th\u00e9p cacbon v\u00e0 th\u00e9p h\u1ee3p kim, c\u1ea3 hai \u0111\u1ec1u c\u00f3 n\u1ed3ng \u0111\u1ed9 s\u1eaft cao. B\u1ea3n th\u00e2n s\u1eaft l\u00e0 v\u1eadt li\u1ec7u s\u1eaft t\u1eeb. H\u00e0m l\u01b0\u1ee3ng s\u1eaft trong th\u00e9p c\u00f4ng c\u1ee5 c\u00e0ng cao th\u00ec t\u00ednh ch\u1ea5t t\u1eeb c\u1ee7a n\u00f3 c\u00e0ng m\u1ea1nh.<\/p>

C\u1ea5u tr\u00fac vi m\u00f4<\/h3>

Trong h\u1ea7u h\u1ebft c\u00e1c tr\u01b0\u1eddng h\u1ee3p, th\u00e9p c\u00f4ng c\u1ee5 c\u00f3 c\u1ea5u tr\u00fac vi m\u00f4 ferritic v\u00e0 martensitic, c\u1ea3 hai \u0111\u1ec1u c\u00f3 t\u1eeb t\u00ednh.<\/p>

C\u1ea5u tr\u00fac Ferritic<\/strong>: \u1ede tr\u1ea1ng th\u00e1i \u1ee7, th\u00e9p c\u00f4ng c\u1ee5 th\u01b0\u1eddng c\u00f3 c\u1ea5u tr\u00fac ferritic, c\u00f3 t\u00ednh t\u1eeb. S\u1ef1 s\u1eafp x\u1ebfp n\u00e0y cho ph\u00e9p \u0111\u1ecbnh h\u01b0\u1edbng c\u00e1c mi\u1ec1n t\u1eeb, khi\u1ebfn v\u1eadt li\u1ec7u ph\u1ea3n \u1ee9ng v\u1edbi t\u1eeb tr\u01b0\u1eddng.<\/p>

Bi\u1ebfn \u0111\u1ed5i austenit<\/strong>: Khi th\u00e9p c\u00f4ng c\u1ee5 \u0111\u01b0\u1ee3c nung n\u00f3ng \u0111\u1ebfn nhi\u1ec7t \u0111\u1ed9 cao (th\u01b0\u1eddng l\u00e0 tr\u00ean 723\u00b0C \u0111\u1ed1i v\u1edbi th\u00e9p cacbon), n\u00f3 tr\u1ea3i qua qu\u00e1 tr\u00ecnh chuy\u1ec3n \u0111\u1ed5i pha th\u00e0nh c\u1ea5u tr\u00fac austenit. V\u1eadt li\u1ec7u n\u00e0y kh\u00f4ng bi\u1ec3u hi\u1ec7n t\u00ednh ch\u1ea5t t\u1eeb t\u00ednh v\u00ec c\u1ea5u h\u00ecnh nguy\u00ean t\u1eed c\u1ee7a n\u00f3 \u1ee9c ch\u1ebf s\u1ef1 t\u1ed5 ch\u1ee9c c\u1ee7a c\u00e1c mi\u1ec1n t\u1eeb t\u00ednh.<\/p>

C\u1ea5u tr\u00fac Martensitic<\/strong>: Khi t\u00f4i (l\u00e0m ngu\u1ed9i nhanh), th\u00e9p chuy\u1ec3n \u0111\u1ed5i tr\u1edf l\u1ea1i th\u00e0nh c\u1ea5u tr\u00fac martensitic, m\u1ed9t l\u1ea7n n\u1eefa c\u00f3 t\u1eeb t\u00ednh. Martensitic l\u00e0 c\u1ea5u tr\u00fac c\u1ee9ng, c\u00f3 \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh cao, duy tr\u00ec c\u00e1c \u0111\u1eb7c t\u00ednh t\u1eeb t\u00ednh c\u1ee7a n\u00f3 do s\u1ef1 li\u00ean k\u1ebft c\u1ee7a m\u1ea1ng tinh th\u1ec3.<\/p>

Nh\u1eefng y\u1ebfu t\u1ed1 n\u00e0o \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn t\u00ednh ch\u1ea5t t\u1eeb t\u00ednh c\u1ee7a th\u00e9p c\u00f4ng c\u1ee5?<\/h2>

T\u00ednh ch\u1ea5t t\u1eeb t\u00ednh c\u1ee7a th\u00e9p c\u00f4ng c\u1ee5 ch\u1ee7 y\u1ebfu \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh b\u1edfi h\u00e0m l\u01b0\u1ee3ng s\u1eaft v\u00e0 c\u1ea5u tr\u00fac vi m\u00f4 c\u1ee7a n\u00f3. Tuy nhi\u00ean, c\u00e1c y\u1ebfu t\u1ed1 kh\u00e1c, ch\u1eb3ng h\u1ea1n nh\u01b0 c\u00e1c nguy\u00ean t\u1ed1 h\u1ee3p kim v\u00e0 x\u1eed l\u00fd nhi\u1ec7t, c\u0169ng \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn c\u01b0\u1eddng \u0111\u1ed9 t\u1eeb t\u00ednh c\u1ee7a n\u00f3.<\/p>

Th\u00e0nh ph\u1ea7n h\u1ee3p kim<\/h3>

Crom<\/strong>: H\u00e0m l\u01b0\u1ee3ng crom cao, \u0111\u1eb7c bi\u1ec7t l\u00e0 trong th\u00e9p c\u00f4ng c\u1ee5 nh\u01b0 D2 ho\u1eb7c M2, c\u00f3 xu h\u01b0\u1edbng l\u00e0m gi\u1ea3m t\u00ednh ch\u1ea5t t\u1eeb t\u00ednh b\u1eb1ng c\u00e1ch h\u1ed7 tr\u1ee3 s\u1ef1 h\u00ecnh th\u00e0nh pha austenit phi t\u1eeb t\u00ednh.<\/p>

Niken<\/strong>:Gi\u1ed1ng nh\u01b0 crom, niken l\u00e0m gi\u1ea3m t\u1eeb t\u00ednh b\u1eb1ng c\u00e1ch th\u00fac \u0111\u1ea9y s\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a c\u00e1c c\u1ea5u tr\u00fac austenit, v\u1ed1n kh\u00f4ng c\u00f3 t\u00ednh ch\u1ea5t t\u1eeb t\u00ednh.<\/p>

Cacbon<\/strong>: Carbon l\u00e0m t\u0103ng \u0111\u1ed9 b\u1ec1n c\u1ee7a th\u00e9p, nh\u01b0ng n\u00f3 \u00edt c\u00f3 t\u00e1c \u0111\u1ed9ng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn t\u1eeb t\u00ednh. T\u00e1c \u0111\u1ed9ng c\u1ee7a n\u00f3 th\u1ec3 hi\u1ec7n r\u00f5 h\u01a1n \u1edf \u0111\u1ed9 c\u1ee9ng v\u00e0 c\u1ea5u tr\u00fac c\u1ee7a th\u00e9p.<\/p>

Vanadi v\u00e0 Molypden<\/strong>:C\u00e1c nguy\u00ean t\u1ed1 n\u00e0y c\u00f3 th\u1ec3 tinh ch\u1ec9nh c\u1ea5u tr\u00fac h\u1ea1t, nh\u01b0ng ch\u00fang kh\u00f4ng \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn t\u1eeb t\u00ednh; tuy nhi\u00ean, ch\u00fang c\u00f3 th\u1ec3 gi\u00fap \u1ed5n \u0111\u1ecbnh c\u1ea5u tr\u00fac martensitic, c\u1ea5u tr\u00fac n\u00e0y v\u1eabn gi\u1eef \u0111\u01b0\u1ee3c t\u1eeb t\u00ednh sau khi t\u00f4i.<\/p>

T\u1ea1p ch\u1ea5t phi t\u1eeb t\u00ednh<\/h3>

Th\u00e9p ph\u1ea3i c\u00f3 \u00edt t\u1ea1p ch\u1ea5t c\u00f3 th\u1ec3 ph\u00e1 v\u1ee1 t\u00ednh ch\u1ea5t t\u1eeb t\u00ednh c\u1ee7a n\u00f3. Qu\u00e1 nhi\u1ec1u th\u00e0nh ph\u1ea7n kh\u00f4ng t\u1eeb t\u00ednh c\u00f3 th\u1ec3 l\u00e0m gi\u1ea3m ho\u1eb7c lo\u1ea1i b\u1ecf t\u1eeb t\u00ednh.<\/p>

L\u01b0u hu\u1ef3nh v\u00e0 Ph\u1ed1t pho<\/strong>: C\u00e1c nguy\u00ean t\u1ed1 n\u00e0y th\u01b0\u1eddng c\u00f3 \u1edf d\u1ea1ng v\u1ebft v\u00e0 kh\u00f4ng c\u00f3 t\u1eeb t\u00ednh. Ch\u00fang c\u00f3 th\u1ec3 ph\u00e1 v\u1ee1 c\u1ea5u tr\u00fac tinh th\u1ec3 c\u1ee7a th\u00e9p, c\u00f3 kh\u1ea3 n\u0103ng l\u00e0m suy y\u1ebfu ph\u1ea3n \u1ee9ng t\u1eeb t\u00ednh t\u1ed5ng th\u1ec3 c\u1ee7a th\u00e9p.<\/p>

Silic v\u00e0 Nh\u00f4m<\/strong>:M\u1eb7c d\u00f9 b\u1ea3n th\u00e2n c\u00e1c nguy\u00ean t\u1ed1 n\u00e0y kh\u00f4ng c\u00f3 t\u1eeb t\u00ednh, nh\u01b0ng \u1edf m\u1ed9t l\u01b0\u1ee3ng nh\u1ea5t \u0111\u1ecbnh, ch\u00fang c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn s\u1ef1 h\u00ecnh th\u00e0nh c\u1ea5u tr\u00fac vi m\u00f4 c\u1ee7a th\u00e9p, \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn kh\u1ea3 n\u0103ng gi\u1eef t\u1eeb t\u00ednh c\u1ee7a th\u00e9p.<\/p>

C\u00e1c lo\u1ea1i th\u00e9p c\u00f4ng c\u1ee5 v\u00e0 t\u00ednh ch\u1ea5t t\u1eeb t\u00ednh<\/h2>

C\u00e1c lo\u1ea1i th\u00e9p c\u00f4ng c\u1ee5 kh\u00e1c nhau th\u1ec3 hi\u1ec7n m\u1ee9c \u0111\u1ed9 t\u1eeb t\u00ednh kh\u00e1c nhau do th\u00e0nh ph\u1ea7n h\u1ee3p kim v\u00e0 c\u1ea5u tr\u00fac vi m\u00f4 \u0111\u1ed9c \u0111\u00e1o c\u1ee7a ch\u00fang. Sau \u0111\u00e2y l\u00e0 m\u1ed9t s\u1ed1 lo\u1ea1i th\u00e9p c\u00f4ng c\u1ee5 c\u1ed5 \u0111i\u1ec3n:<\/p>

C\u00e1c lo\u1ea1i th\u00e9p c\u00f4ng c\u1ee5 t\u1eeb t\u00ednh m\u1ea1nh<\/h3>
  1. W1 (Th\u00e9p c\u00f4ng c\u1ee5 t\u00f4i n\u01b0\u1edbc)<\/strong><\/li><\/ol>

    W1<\/a> l\u00e0 lo\u1ea1i th\u00e9p c\u00f3 h\u00e0m l\u01b0\u1ee3ng cacbon cao v\u1edbi nhi\u1ec1u s\u1eaft, khi\u1ebfn n\u00f3 c\u00f3 t\u1eeb t\u00ednh m\u1ea1nh. Sau khi t\u00f4i, n\u00f3 t\u1ea1o th\u00e0nh c\u1ea5u tr\u00fac martensitic gi\u1eef \u0111\u01b0\u1ee3c t\u1eeb t\u00ednh, khi\u1ebfn n\u00f3 tr\u1edf n\u00ean l\u00fd t\u01b0\u1edfng cho c\u00e1c c\u00f4ng c\u1ee5 c\u1ea7n v\u1eeba c\u1ee9ng v\u1eeba c\u00f3 t\u1eeb t\u00ednh.<\/p>

    1. O1 (Th\u00e9p c\u00f4ng c\u1ee5 t\u00f4i d\u1ea7u)<\/strong><\/li><\/ol>

      O1<\/a> l\u00e0 m\u1ed9t lo\u1ea1i th\u00e9p c\u00f4ng c\u1ee5 cacbon cao kh\u00e1c c\u00f3 t\u00ednh ch\u1ea5t t\u1eeb t\u00ednh t\u1ed1t. N\u00f3 c\u00f3 m\u1ed9t l\u01b0\u1ee3ng nh\u1ecf c\u00e1c nguy\u00ean t\u1ed1 h\u1ee3p kim nh\u01b0 crom v\u00e0 vanadi, nh\u01b0ng nh\u1eefng nguy\u00ean t\u1ed1 n\u00e0y kh\u00f4ng l\u00e0m gi\u1ea3m nhi\u1ec1u t\u00ednh t\u1eeb c\u1ee7a n\u00f3. Sau khi x\u1eed l\u00fd nhi\u1ec7t, n\u00f3 v\u1eabn gi\u1eef \u0111\u01b0\u1ee3c t\u00ednh t\u1eeb m\u1ea1nh do c\u1ea5u tr\u00fac martensitic c\u1ee7a n\u00f3.<\/p>

      1. D2 (Th\u00e9p c\u00f4ng c\u1ee5 h\u00e0m l\u01b0\u1ee3ng cacbon cao, crom cao)<\/strong><\/li><\/ol>

        D2 \u0111\u01b0\u1ee3c bi\u1ebft \u0111\u1ebfn v\u1edbi kh\u1ea3 n\u0103ng ch\u1ed1ng m\u00e0i m\u00f2n v\u00e0 h\u00e0m l\u01b0\u1ee3ng crom cao. Trong khi crom l\u00e0m gi\u1ea3m t\u1eeb t\u00ednh m\u1ed9t ch\u00fat, D2 v\u1eabn c\u00f3 t\u1eeb t\u00ednh v\u1eeba ph\u1ea3i, \u0111\u1eb7c bi\u1ec7t l\u00e0 khi \u0111\u01b0\u1ee3c l\u00e0m c\u1ee9ng th\u00e0nh d\u1ea1ng martensitic.<\/p>

        C\u00e1c lo\u1ea1i th\u00e9p c\u00f4ng c\u1ee5 t\u1eeb t\u00ednh y\u1ebfu<\/h3>
        1. M2 (Th\u00e9p c\u00f4ng c\u1ee5 t\u1ed1c \u0111\u1ed9 cao)<\/strong><\/li><\/ol>

          M2<\/a> l\u00e0 th\u00e9p t\u1ed1c \u0111\u1ed9 cao v\u1edbi nhi\u1ec1u th\u00e0nh ph\u1ea7n h\u1ee3p kim h\u01a1n nh\u01b0 vonfram v\u00e0 molypden, l\u00e0m gi\u1ea3m t\u1eeb t\u00ednh c\u1ee7a n\u00f3. M\u1eb7c d\u00f9 n\u00f3 v\u1eabn c\u00f3 m\u1ed9t s\u1ed1 \u0111\u1eb7c t\u00ednh t\u1eeb t\u00ednh khi \u0111\u01b0\u1ee3c l\u00e0m c\u1ee9ng, nh\u01b0ng t\u1eeb t\u00ednh c\u1ee7a n\u00f3 y\u1ebfu h\u01a1n nhi\u1ec1u so v\u1edbi th\u00e9p c\u00f4ng c\u1ee5 cacbon th\u1ea5p.<\/p>

          1. H13 (Th\u00e9p c\u00f4ng c\u1ee5 gia c\u00f4ng n\u00f3ng)<\/strong><\/li><\/ol>

            H13 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho c\u00e1c \u1ee9ng d\u1ee5ng nhi\u1ec7t \u0111\u1ed9 cao v\u00e0 ch\u1ee9a nhi\u1ec1u crom v\u00e0 molypden. C\u00e1c nguy\u00ean t\u1ed1 n\u00e0y l\u00e0m gi\u1ea3m t\u1eeb t\u00ednh c\u1ee7a n\u00f3. M\u1eb7c d\u00f9 n\u00f3 c\u00f3 t\u1eeb t\u00ednh y\u1ebfu sau khi x\u1eed l\u00fd nhi\u1ec7t, nh\u01b0ng n\u00f3 \u00edt t\u1eeb t\u00ednh h\u01a1n nhi\u1ec1u so v\u1edbi c\u00e1c lo\u1ea1i th\u00e9p nh\u01b0 W1 ho\u1eb7c O1.<\/p>

            1. A2 (Th\u00e9p c\u00f4ng c\u1ee5 t\u00f4i b\u1eb1ng kh\u00ed)<\/strong><\/li><\/ol>

              A2<\/a> ch\u1ee9a crom v\u00e0 molypden, l\u00e0m gi\u1ea3m t\u00ednh ch\u1ea5t t\u1eeb t\u00ednh c\u1ee7a n\u00f3. M\u1eb7c d\u00f9 n\u00f3 v\u1eabn c\u00f3 t\u1eeb t\u00ednh khi \u0111\u01b0\u1ee3c l\u00e0m c\u1ee9ng, nh\u01b0ng t\u1eeb t\u00ednh c\u1ee7a n\u00f3 y\u1ebfu h\u01a1n c\u00e1c lo\u1ea1i th\u00e9p c\u00f3 h\u00e0m l\u01b0\u1ee3ng cacbon cao nh\u01b0 W1 ho\u1eb7c O1.<\/p>

              T\u1ea1i sao t\u1eeb t\u00ednh kh\u00f4ng quan tr\u1ecdng \u0111\u1ed1i v\u1edbi th\u00e9p c\u00f4ng c\u1ee5?<\/h2>
              1. \u0110\u1ed9 c\u1ee9ng v\u00e0 kh\u1ea3 n\u0103ng ch\u1ed1ng m\u00e0i m\u00f2n l\u00e0 \u01b0u ti\u00ean h\u00e0ng \u0111\u1ea7u. Nh\u1eefng \u0111\u1eb7c t\u00ednh n\u00e0y quan tr\u1ecdng h\u01a1n \u0111\u1ed1i v\u1edbi c\u00e1c c\u00f4ng c\u1ee5 c\u1ea7n gi\u1eef \u0111\u1ed9 s\u1eafc b\u00e9n v\u00e0 ho\u1ea1t \u0111\u1ed9ng t\u1ed1t d\u01b0\u1edbi \u00e1p l\u1ef1c.<\/li>\n\n
              2. \u0110\u1ed1i v\u1edbi h\u1ea7u h\u1ebft c\u00e1c m\u1ee5c \u0111\u00edch s\u1eed d\u1ee5ng th\u00e9p c\u00f4ng c\u1ee5, t\u00ednh ch\u1ea5t t\u1eeb t\u00ednh kh\u00f4ng \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn hi\u1ec7u qu\u1ea3 ho\u1ea1t \u0111\u1ed9ng c\u1ee7a c\u00f4ng c\u1ee5.<\/li>\n\n
              3. C\u00e1c th\u00e0nh ph\u1ea7n x\u1eed l\u00fd nhi\u1ec7t v\u00e0 h\u1ee3p kim trong th\u00e9p c\u00f4ng c\u1ee5 t\u1eadp trung v\u00e0o vi\u1ec7c l\u00e0m cho th\u00e9p c\u1ee9ng h\u01a1n, dai h\u01a1n v\u00e0 ch\u1ed1ng m\u00e0i m\u00f2n t\u1ed1t h\u01a1n. C\u00e1c quy tr\u00ecnh n\u00e0y quan tr\u1ecdng h\u01a1n nhi\u1ec1u \u0111\u1ed1i v\u1edbi hi\u1ec7u su\u1ea5t so v\u1edbi vi\u1ec7c th\u00e9p c\u00f3 t\u1eeb t\u00ednh hay kh\u00f4ng.<\/li><\/ol>

                T\u00ecm \u0111\u00fang lo\u1ea1i th\u00e9p c\u00f4ng c\u1ee5 v\u1edbi SteelPro Group<\/h2>

                \u0110\u1ed1i v\u1edbi c\u00e1c d\u1ef1 \u00e1n \u0111\u00f2i h\u1ecfi \u0111\u1ed9 ch\u00ednh x\u00e1c v\u00e0 hi\u1ec7u su\u1ea5t cao, SteelPro Group cung c\u1ea5p \u0111\u00fang lo\u1ea1i th\u00e9p c\u00f4ng c\u1ee5 ph\u00f9 h\u1ee3p v\u1edbi y\u00eau c\u1ea7u c\u1ee7a b\u1ea1n. Cho d\u00f9 b\u1ea1n c\u1ea7n lo\u1ea1i th\u00e9p c\u00f3 t\u1eeb t\u00ednh cao nh\u01b0 W1 v\u00e0 O1 hay lo\u1ea1i th\u00e9p chuy\u00ean d\u1ee5ng h\u01a1n nh\u01b0 M2, Ng\u00e0y 2<\/a>, V\u00e0 H13<\/a>, l\u1ef1a ch\u1ecdn c\u1ee7a ch\u00fang t\u00f4i \u0111\u1ea3m b\u1ea3o b\u1ea1n s\u1ebd c\u00f3 \u0111\u01b0\u1ee3c ch\u1ea5t l\u01b0\u1ee3ng l\u00e2u d\u00e0i. <\/p>","protected":false},"excerpt":{"rendered":"

                C\u00f3, h\u1ea7u h\u1ebft c\u00e1c lo\u1ea1i th\u00e9p c\u00f4ng c\u1ee5 \u0111\u1ec1u c\u00f3 t\u1eeb t\u00ednh. Th\u00e9p c\u00f4ng c\u1ee5 l\u00e0 m\u1ed9t nh\u00f3m v\u1eadt li\u1ec7u cacbon v\u00e0 h\u1ee3p kim \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 ch\u1ecbu \u0111\u01b0\u1ee3c [\u2026]<\/p>","protected":false},"author":12,"featured_media":20463,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_eb_attr":"","rank_math_lock_modified_date":false,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[4305,4293],"tags":[],"class_list":["post-20475","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-properties-tool-steel","category-tool-steel"],"acf":[],"_links":{"self":[{"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/posts\/20475","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/users\/12"}],"replies":[{"embeddable":true,"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/comments?post=20475"}],"version-history":[{"count":0,"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/posts\/20475\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/media\/20463"}],"wp:attachment":[{"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/media?parent=20475"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/categories?post=20475"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/tags?post=20475"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}