{"id":7868,"date":"2024-08-08T06:32:00","date_gmt":"2024-08-07T22:32:00","guid":{"rendered":"https:\/\/app11147.cloudwayssites.com\/?p=7868"},"modified":"2025-02-17T19:06:48","modified_gmt":"2025-02-17T11:06:48","slug":"duplex","status":"publish","type":"post","link":"https:\/\/steelprogroup.com\/vi\/stainless-steel\/type\/duplex\/","title":{"rendered":"Th\u00e9p kh\u00f4ng g\u1ec9 Duplex: \u0110\u1ecbnh ngh\u0129a, Nh\u00f3m, Th\u00e0nh ph\u1ea7n, T\u00ednh ch\u1ea5t, \u1ee8ng d\u1ee5ng & Th\u00eam"},"content":{"rendered":"

Th\u00e9p kh\u00f4ng g\u1ec9 Duplex l\u00e0 v\u1eadt li\u1ec7u quan tr\u1ecdng trong k\u1ef9 thu\u1eadt hi\u1ec7n \u0111\u1ea1i. H\u1ee3p kim \u0111a n\u0103ng n\u00e0y \u0111\u01b0\u1ee3c bi\u1ebft \u0111\u1ebfn v\u1edbi c\u1ea5u tr\u00fac vi m\u00f4 hai pha. N\u00f3 k\u1ebft h\u1ee3p \u0111\u1ed9 b\u1ec1n, kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n v\u00e0 ti\u1ebft ki\u1ec7m chi ph\u00ed. B\u00e0i vi\u1ebft n\u00e0y s\u1ebd xem x\u00e9t \u0111i\u1ec1u g\u00ec l\u00e0m cho th\u00e9p kh\u00f4ng g\u1ec9 Duplex tr\u1edf n\u00ean \u0111\u1ed9c \u0111\u00e1o, n\u01a1i n\u00f3 th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng v\u00e0 t\u1ea1i sao n\u00f3 l\u00e0 l\u1ef1a ch\u1ecdn h\u00e0ng \u0111\u1ea7u cho nhi\u1ec1u ng\u00e0nh c\u00f4ng nghi\u1ec7p.<\/p>

Th\u00e9p kh\u00f4ng g\u1ec9 Duplex l\u00e0 g\u00ec?<\/h2>

Th\u00e9p kh\u00f4ng g\u1ec9 Duplex l\u00e0 m\u1ed9t trong n\u0103m gia \u0111\u00ecnh th\u00e9p kh\u00f4ng g\u1ec9<\/a>. C\u1ea5u tr\u00fac luy\u1ec7n kim c\u1ee7a n\u00f3 l\u00e0 austenit v\u00e0 ferit v\u1edbi t\u1ef7 l\u1ec7 g\u1ea7n b\u1eb1ng nhau v\u00e0 ch\u1ee9a Cr v\u00e0 Mo t\u01b0\u01a1ng \u0111\u1ed1i cao. N\u00f3 c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n t\u1ed1t h\u01a1n v\u00e0 \u0111\u1ed9 b\u1ec1n cao h\u01a1n th\u00e9p kh\u00f4ng g\u1ec9 austenit. N\u00f3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong ng\u00e0nh c\u00f4ng nghi\u1ec7p d\u1ea7u kh\u00ed v\u00e0 h\u00f3a d\u1ea7u ngo\u00e0i kh\u01a1i. C\u00e1c lo\u1ea1i ph\u1ed5 bi\u1ebfn bao g\u1ed3m 2205, S39274 v\u00e0 S31803.<\/p>

C\u00e1c ph\u00e2n nh\u00f3m th\u00e9p kh\u00f4ng g\u1ec9 Duplex l\u00e0 g\u00ec?<\/h2>

Th\u00e9p kh\u00f4ng g\u1ec9 duplex l\u00e0 m\u1ed9t h\u1ecd c\u00e1c lo\u1ea1i th\u00e9p c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n kh\u00e1c nhau t\u00f9y thu\u1ed9c v\u00e0o h\u00e0m l\u01b0\u1ee3ng h\u1ee3p kim. Theo c\u00e1c th\u00e0nh ph\u1ea7n v\u00e0 t\u00ednh ch\u1ea5t h\u1ee3p kim, th\u00e9p kh\u00f4ng g\u1ec9 duplex \u0111\u01b0\u1ee3c chia th\u00e0nh b\u1ed1n nh\u00f3m nh\u1ecf. M\u1ed7i nh\u00f3m c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n r\u1ed7 kh\u00e1c nhau, d\u01b0\u1edbi \u0111\u00e2y ch\u00fang t\u00f4i l\u01b0u \u00fd ph\u1ea1m vi PREN (s\u1ed1 t\u01b0\u01a1ng \u0111\u01b0\u01a1ng kh\u1ea3 n\u0103ng ch\u1ed1ng r\u1ed7). <\/p>

PREN = %Cr + 3,3 %Mo + 16 %N. Gi\u00e1 tr\u1ecb PREN c\u00e0ng cao th\u00ec kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n c\u00e0ng l\u1edbn.<\/p>

Th\u00e9p kh\u00f4ng g\u1ec9 Duplex Lean\u2014\u2014 (ph\u1ea1m vi PREN: 22-27)<\/h3>

Th\u00f4ng th\u01b0\u1eddng ch\u1ee9a h\u00e0m l\u01b0\u1ee3ng niken v\u00e0\/ho\u1eb7c molypden th\u1ea5p h\u01a1n v\u00e0 h\u00e0m l\u01b0\u1ee3ng nit\u01a1 v\u00e0 mangan cao h\u01a1n. Ch\u00fang c\u00f3 \u0111\u1ed9 b\u1ec1n cao, \u0111\u1eb7c bi\u1ec7t l\u00e0 \u0111\u1ed9 b\u1ec1n k\u00e9o. Ch\u00fang th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c \u1ee9ng d\u1ee5ng nh\u01b0 x\u00e2y d\u1ef1ng b\u1ec3 ch\u1ee9a, c\u1ea7u ho\u1eb7c thanh gi\u1eb1ng. C\u00e1c lo\u1ea1i ph\u1ed5 bi\u1ebfn bao g\u1ed3m 2101 (S32101), 2202 (S32202) v\u00e0 2304 (S32304).<\/p>

Ti\u00eau chu\u1ea9n th\u00e9p kh\u00f4ng g\u1ec9 Duplex\u2014\u2014(ph\u1ea1m vi PREN: 28-38)<\/h3>

Th\u00e9p kh\u00f4ng g\u1ec9 duplex ti\u00eau chu\u1ea9n l\u00e0 lo\u1ea1i \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng nhi\u1ec1u nh\u1ea5t hi\u1ec7n nay v\u00ec c\u00f3 c\u00e1c \u0111\u1eb7c t\u00ednh \u1edf m\u1ee9c trung b\u00ecnh. Ch\u00fang c\u00f3 h\u00e0m l\u01b0\u1ee3ng crom l\u00e0 21-25%, h\u00e0m l\u01b0\u1ee3ng molypden l\u00e0 2-3% v\u00e0 h\u00e0m l\u01b0\u1ee3ng nit\u01a1 l\u00e0 0,15%. Th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c \u1ee9ng d\u1ee5ng nh\u01b0 b\u1ed3n ch\u1ee9a, h\u1ec7 th\u1ed1ng \u0111\u01b0\u1eddng \u1ed1ng ho\u1eb7c b\u00ecnh x\u1eed l\u00fd.<\/p>

2205 (S32205) n\u1ed5i b\u1eadt l\u00e0 lo\u1ea1i th\u00e9p duplex \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i nh\u1ea5t trong nhi\u1ec1u ng\u00e0nh c\u00f4ng nghi\u1ec7p kh\u00e1c nhau. N\u00f3 c\u00f3 hi\u1ec7u su\u1ea5t t\u1ed1t trong m\u00f4i tr\u01b0\u1eddng \u00e1p su\u1ea5t cao v\u00e0 \u0103n m\u00f2n cao do c\u00f3 \u0111\u1ed9 b\u1ec1n k\u00e9o cao v\u00e0 kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n r\u1ed7 v\u00e0 khe h\u1edf cao.<\/p>

C\u1ea5p th\u00e9p kh\u00f4ng g\u1ec9 Super Duplex\u2014\u2014(ph\u1ea1m vi PREN: 38-45)<\/h3>

Th\u00f4ng th\u01b0\u1eddng ch\u1ee9a 25% crom, 3,5-4,0% molypden v\u00e0 0,25-0,27% nit\u01a1. Ch\u00fang c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng r\u1ed7 c\u1ee5c b\u1ed9 v\u00e0 \u0103n m\u00f2n khe h\u1edf tuy\u1ec7t v\u1eddi. Ch\u00fang \u0111\u01b0\u1ee3c \u01b0a chu\u1ed9ng cho c\u00e1c m\u00f4i tr\u01b0\u1eddng kh\u1eafc nghi\u1ec7t trong s\u1ea3n xu\u1ea5t d\u1ea7u ngo\u00e0i kh\u01a1i, ch\u1ebf bi\u1ebfn h\u00f3a ch\u1ea5t, \u1ee9ng d\u1ee5ng h\u00e0ng h\u1ea3i v\u00e0 c\u00e1c c\u1ea5u tr\u00fac ngo\u00e0i kh\u01a1i. C\u00e1c lo\u1ea1i ph\u1ed5 bi\u1ebfn bao g\u1ed3m 2507 (S32750) v\u00e0 Z100 (S32760).<\/p>

C\u1ea5p th\u00e9p kh\u00f4ng g\u1ec9 Hyper Duplex\u2014\u2014(ph\u1ea1m vi PREN: 48-57)<\/h3>

Ch\u00fang c\u00f3 h\u00e0m l\u01b0\u1ee3ng crom l\u00e0 26-30%, h\u00e0m l\u01b0\u1ee3ng molypden l\u00e0 3,5-5,0% v\u00e0 h\u00e0m l\u01b0\u1ee3ng nit\u01a1 l\u00e0 0,30-0,50%. Ch\u00fang l\u00e0 lo\u1ea1i h\u1ee3p kim cao nh\u1ea5t trong h\u1ecd \u1ed1ng \u0111\u00f4i. Ch\u00fang \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf cho m\u00f4i tr\u01b0\u1eddng c\u00f3 ch\u1ee9a axit v\u00e0 clorua c\u1ef1c k\u1ef3 kh\u1eafc nghi\u1ec7t. Hi\u1ec7n t\u1ea1i, ch\u00fang ch\u1ee7 y\u1ebfu c\u00f3 s\u1eb5n d\u01b0\u1edbi d\u1ea1ng \u1ed1ng li\u1ec1n m\u1ea1ch. C\u00e1c lo\u1ea1i ph\u1ed5 bi\u1ebfn bao g\u1ed3m S33207 v\u00e0 SAF S32707.<\/p>

C\u00e1c lo\u1ea1i th\u00e9p kh\u00f4ng g\u1ec9 Duplex ph\u1ed5 bi\u1ebfn<\/h2>

2205 Th\u00e9p kh\u00f4ng g\u1ec9 Duplex<\/h3>

Duplex 2205 l\u00e0 lo\u1ea1i th\u00e9p kh\u00f4ng g\u1ec9 duplex \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i nh\u1ea5t. N\u00f3 ch\u1ee9a kho\u1ea3ng 22% crom, 5-6% niken v\u00e0 3% molypden. \u0110\u01b0\u1ee3c bi\u1ebft \u0111\u1ebfn v\u1edbi s\u1ef1 k\u1ebft h\u1ee3p tuy\u1ec7t v\u1eddi gi\u1eefa \u0111\u1ed9 b\u1ec1n v\u00e0 kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n. \u0110\u01b0\u1ee3c s\u1eed d\u1ee5ng trong nhi\u1ec1u ng\u00e0nh c\u00f4ng nghi\u1ec7p kh\u00e1c nhau, bao g\u1ed3m d\u1ea7u kh\u00ed, ch\u1ebf bi\u1ebfn h\u00f3a ch\u1ea5t v\u00e0 m\u00f4i tr\u01b0\u1eddng bi\u1ec3n.<\/p>

2507 Th\u00e9p kh\u00f4ng g\u1ec9 Duplex<\/h3>

Duplex 2507 l\u00e0 lo\u1ea1i th\u00e9p kh\u00f4ng g\u1ec9 si\u00eau duplex. N\u00f3 ch\u1ee9a kho\u1ea3ng 25% crom, 7% niken v\u00e0 4% molypden. C\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n t\u1ed1t h\u01a1n so v\u1edbi Duplex 2205, \u0111\u1eb7c bi\u1ec7t l\u00e0 trong m\u00f4i tr\u01b0\u1eddng kh\u1eafc nghi\u1ec7t. Th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c gi\u00e0n khoan d\u1ea7u kh\u00ed ngo\u00e0i kh\u01a1i, \u1ee9ng d\u1ee5ng n\u01b0\u1edbc bi\u1ec3n v\u00e0 x\u1eed l\u00fd h\u00f3a ch\u1ea5t.<\/p>

2101 Th\u00e9p kh\u00f4ng g\u1ec9 Duplex<\/h3>

Duplex 2101, c\u00f2n \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 LDX 2101, l\u00e0 lo\u1ea1i th\u00e9p kh\u00f4ng g\u1ec9 duplex n\u1ea1c. N\u00f3 ch\u1ee9a kho\u1ea3ng 21,5% crom, 1,5% mangan v\u00e0 0,22% nit\u01a1. \u0110\u01b0\u1ee3c bi\u1ebft \u0111\u1ebfn v\u1edbi \u0111\u1ed9 b\u1ec1n cao, kh\u1ea3 n\u0103ng h\u00e0n t\u1ed1t v\u00e0 kh\u1ea3 n\u0103ng ch\u1ed1ng n\u1ee9t \u0103n m\u00f2n \u1ee9ng su\u1ea5t tuy\u1ec7t v\u1eddi. \u0110\u01b0\u1ee3c s\u1eed d\u1ee5ng trong nhi\u1ec1u ng\u00e0nh c\u00f4ng nghi\u1ec7p kh\u00e1c nhau, bao g\u1ed3m x\u00e2y d\u1ef1ng, v\u1eadn t\u1ea3i v\u00e0 ch\u1ebf bi\u1ebfn h\u00f3a ch\u1ea5t.<\/p>

2304 Th\u00e9p kh\u00f4ng g\u1ec9 Duplex<\/h3>

Duplex 2304 l\u00e0 th\u00e9p kh\u00f4ng g\u1ec9 duplex c\u00f3 c\u1ea5u tr\u00fac vi m\u00f4 c\u00e2n b\u1eb1ng v\u1edbi kho\u1ea3ng 23% crom, 4% niken v\u00e0 0,1% nit\u01a1. N\u00f3 c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n c\u1ee5c b\u1ed9 t\u1ed1t, ch\u1eb3ng h\u1ea1n nh\u01b0 \u0103n m\u00f2n r\u1ed7 v\u00e0 \u0103n m\u00f2n khe h\u1edf. \u0110\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c \u1ee9ng d\u1ee5ng k\u1ebft c\u1ea5u v\u00e0 ki\u1ebfn tr\u00fac, c\u0169ng nh\u01b0 trong m\u00f4i tr\u01b0\u1eddng bi\u1ec3n.<\/p>

Zeron 100 Duplex Th\u00e9p kh\u00f4ng g\u1ec9<\/h3>

Zeron 100 l\u00e0 lo\u1ea1i th\u00e9p kh\u00f4ng g\u1ec9 si\u00eau song c\u00f4ng v\u1edbi 25% crom, 3.5% molypden v\u00e0 0.25% nit\u01a1. N\u00f3 c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n v\u01b0\u1ee3t tr\u1ed9i trong m\u00f4i tr\u01b0\u1eddng kh\u1eafc nghi\u1ec7t, \u0111\u1eb7c bi\u1ec7t l\u00e0 ch\u1ed1ng l\u1ea1i n\u1ee9t \u0103n m\u00f2n \u1ee9ng su\u1ea5t do clorua g\u00e2y ra. Th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c gi\u00e0n khoan d\u1ea7u kh\u00ed ngo\u00e0i kh\u01a1i, nh\u00e0 m\u00e1y kh\u1eed mu\u1ed1i v\u00e0 thi\u1ebft b\u1ecb x\u1eed l\u00fd h\u00f3a ch\u1ea5t.<\/p>

Th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc c\u1ee7a th\u00e9p kh\u00f4ng g\u1ec9 Duplex<\/h2>

Ki\u1ec3m tra b\u1ea3ng d\u01b0\u1edbi \u0111\u00e2y \u0111\u1ec3 bi\u1ebft th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc c\u1ee7a m\u1ed9t s\u1ed1 lo\u1ea1i th\u00e9p kh\u00f4ng g\u1ec9 hai pha th\u00f4ng d\u1ee5ng:<\/p>

T\u00caN<\/strong><\/td>S\u1ed0 UNS<\/strong><\/td>C<\/strong><\/td>Mn<\/strong><\/td>Si<\/strong><\/td>Cr<\/strong><\/td>Ni<\/strong><\/td>N<\/strong><\/td>Cu<\/strong><\/td>T\u00f4i<\/strong><\/td>Nh\u00f3m<\/strong><\/td><\/tr>
2202<\/td>S32202<\/td>0.03<\/td>2.00<\/td>1.00<\/td>21.0-22.0<\/td>1.35-1.70<\/td>0.20-0.25<\/td>0.1-0.8<\/td>0.1-0.8<\/td>C\u0103n h\u1ed9 Duplex Lean<\/td><\/tr>
2101<\/td>S32101<\/td>0.04<\/td>4.0-6.0<\/td>1<\/td>21.0-22.0<\/td>1.35-1.70<\/td>0.20-0.25<\/td>0.1-0.8<\/td>0.1-0.8<\/td><\/tr>
2205<\/td>S31803<\/td>0.03<\/td>2<\/td>1<\/td>21.0-23.0<\/td>4.5-6.5<\/td>0.08-0.20<\/td>–<\/td>2.5-3.4<\/td>C\u0103n h\u1ed9 Duplex ti\u00eau chu\u1ea9n<\/td><\/tr>
S32205<\/td>1.4462<\/td>2<\/td>1<\/td>22.0-23.0<\/td>4.5-6.5<\/td>0.14-0.20<\/td>–<\/td>3.0-3.5<\/td><\/tr>
225<\/td>S32550<\/td>0.04<\/td>1.5<\/td>1<\/td>24.0-27.0<\/td>4.5-6.5<\/td>0.10-0.25<\/td>1.5-2.5<\/td>2.9-3.9<\/td>Si\u00eau Duplex<\/td><\/tr>
2507<\/td>S32750<\/td>0.03<\/td>1.2<\/td>0.8<\/td>24.0-26.0<\/td>6.0-8.0<\/td>0.24-0.32<\/td>0.5<\/td>3.0-5.0<\/td><\/tr>
2707<\/td>S32707<\/td>0.03<\/td>1.5<\/td>0.5<\/td>26.0-29.0<\/td>5.5-9.5<\/td>0.30-0.50<\/td>1<\/td>4.0-5.0<\/td>C\u0103n h\u1ed9 Hyer Duplex<\/td><\/tr>
S33207<\/td>–<\/td>1.5<\/td>0.8<\/td>29.0-33.0<\/td>6.0-9.0<\/td>0.40-0.60<\/td>1<\/td>3.0-5.0<\/td><\/tr><\/tbody><\/table><\/figure>

T\u00ednh ch\u1ea5t c\u1ee7a th\u00e9p kh\u00f4ng g\u1ec9 Duplex<\/h2>

T\u00ednh ch\u1ea5t v\u1eadt l\u00fd<\/h3>

Ki\u1ec3m tra b\u1ea3ng d\u01b0\u1edbi \u0111\u00e2y \u0111\u1ec3 bi\u1ebft c\u00e1c t\u00ednh ch\u1ea5t v\u1eadt l\u00fd c\u1ee7a th\u00e9p kh\u00f4ng g\u1ec9 hai pha:<\/p>

T\u00e0i s\u1ea3n v\u1eadt l\u00fd<\/strong><\/td>Ph\u1ea1m vi gi\u00e1 tr\u1ecb \u0111i\u1ec3n h\u00ecnh<\/strong><\/td><\/tr>
T\u1ec9 tr\u1ecdng<\/td>7,8-8,0 g\/cm\u00b3<\/td><\/tr>
\u0110i\u1ec3m n\u00f3ng ch\u1ea3y<\/td>1350-1450\u00b0C<\/td><\/tr>
Nhi\u1ec7t dung ri\u00eang<\/td>0,4-0,6 J\/(g\u00b7K)<\/td><\/tr>
\u0110\u1ed9 d\u1eabn nhi\u1ec7t<\/td>15-20 W\/(m\u00b7K)<\/td><\/tr>
\u0110\u1ed9 d\u1eabn \u0111i\u1ec7n<\/td>2.0-3.0 %IACS<\/td><\/tr>
H\u1ec7 s\u1ed1 gi\u00e3n n\u1edf nhi\u1ec7t<\/td>11-14 \u00b5m\/m\u00b7K<\/td><\/tr>
\u0110i\u1ec7n tr\u1edf su\u1ea5t (\u03a9.m)<\/td>1,0-1,2 \u00b5\u03a9\u00b7m<\/td><\/tr><\/tbody><\/table><\/figure>

T\u00ednh ch\u1ea5t c\u01a1 h\u1ecdc<\/h3>

Ki\u1ec3m tra b\u1ea3ng d\u01b0\u1edbi \u0111\u00e2y \u0111\u1ec3 bi\u1ebft c\u00e1c t\u00ednh ch\u1ea5t c\u01a1 h\u1ecdc c\u1ee7a th\u00e9p kh\u00f4ng g\u1ec9 hai pha:<\/p>

T\u00e0i s\u1ea3n v\u1eadt l\u00fd<\/td>Gi\u00e1 tr\u1ecb \u0111i\u1ec3n h\u00ecnh<\/td>Gi\u00e1 tr\u1ecb \u0111i\u1ec3n h\u00ecnh<\/td><\/tr>
T\u1ec9 tr\u1ecdng<\/td>7,8-8,0 g\/cm\u00b3<\/td>487-500 lb\/ft\u00b3<\/td><\/tr>
\u0110i\u1ec3m n\u00f3ng ch\u1ea3y<\/td>1350-1450\u00b0C<\/td>2462-2642\u00b0F<\/td><\/tr>
Nhi\u1ec7t dung ri\u00eang<\/td>0,4-0,6 J\/(g\u00b7K)<\/td>0,096-0,144 BTU\/(lb\u00b7\u00b0F)<\/td><\/tr>
\u0110\u1ed9 d\u1eabn nhi\u1ec7t<\/td>15-20 W\/(m\u00b7K)<\/td>8,7-11,6 BTU\/(ft\u00b7h\u00b7\u00b0F)<\/td><\/tr>
\u0110\u1ed9 d\u1eabn \u0111i\u1ec7n<\/td>2.0-3.0 %IACS<\/td>2.0-3.0 %IACS<\/td><\/tr>
H\u1ec7 s\u1ed1 gi\u00e3n n\u1edf nhi\u1ec7t<\/td>11-14 \u00b5m\/m\u00b7K<\/td>6,1-7,8 \u00b5in\/in\u00b7\u00b0F<\/td><\/tr>
\u0110i\u1ec7n tr\u1edf su\u1ea5t<\/td>1,0-1,2 \u00b5\u03a9\u00b7m<\/td>1,0-1,2 \u00b5\u03a9\u00b7m<\/td><\/tr><\/tbody><\/table><\/figure>

M\u1ed9t g\u1ee3i \u00fd n\u1eefa, n\u1ebfu d\u1ef1 \u00e1n c\u1ee7a b\u1ea1n c\u00f3 y\u00eau c\u1ea7u cao v\u1ec1 t\u00ednh ch\u1ea5t c\u01a1 h\u1ecdc \u1edf nhi\u1ec7t \u0111\u1ed9 ph\u00f2ng, b\u1ea1n c\u00f3 th\u1ec3 \u01b0u ti\u00ean c\u00e1c lo\u1ea1i th\u00e9p duplex v\u00ec gi\u00e1 tr\u1ecb \u1ee9ng su\u1ea5t ch\u1ea3y t\u1ed1i thi\u1ec3u c\u1ee7a ch\u00fang g\u1ea5p \u0111\u00f4i th\u00e9p kh\u00f4ng g\u1ec9 austenit, cho ph\u00e9p t\u1ea1o ra c\u00e1c m\u1eb7t c\u1eaft m\u1ecfng h\u01a1n.<\/p>

Ch\u1ed1ng \u0103n m\u00f2n<\/h2>

Kh\u1ea3 n\u0103ng ch\u1ed1ng axit<\/strong><\/p>

H\u00e0m l\u01b0\u1ee3ng crom cao trong th\u00e9p kh\u00f4ng g\u1ec9 duplex c\u00f9ng v\u1edbi m\u1ed9t l\u01b0\u1ee3ng molypden v\u00e0 niken nh\u1ea5t \u0111\u1ecbnh gi\u00fap th\u00e9p c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng ch\u1ecbu t\u1ed1t trong m\u00f4i tr\u01b0\u1eddng c\u00f3 t\u00ednh axit.<\/p>

Kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n r\u1ed7 v\u00e0 khe h\u1edf<\/strong><\/p>

H\u00e0m l\u01b0\u1ee3ng crom, molypden v\u00e0 nit\u01a1 cao h\u01a1n gi\u00fap th\u00e9p kh\u00f4ng g\u1ec9 hai l\u1edbp c\u00f3 hi\u1ec7u su\u1ea5t tuy\u1ec7t v\u1eddi ch\u1ed1ng l\u1ea1i hi\u1ec7n t\u01b0\u1ee3ng r\u1ed7 v\u00e0 \u0103n m\u00f2n khe h\u1edf do clorua g\u00e2y ra.<\/p>

Kh\u1ea3 n\u0103ng ch\u1ed1ng n\u1ee9t \u0103n m\u00f2n \u1ee9ng su\u1ea5t<\/strong><\/p>

Ngo\u00e0i ra, c\u1ea5u tr\u00fac pha k\u00e9p c\u1ee7a n\u00f3 c\u00f2n c\u00f3 l\u1ee3i th\u1ebf trong vi\u1ec7c ch\u1ed1ng n\u1ee9t \u0103n m\u00f2n \u1ee9ng su\u1ea5t do clorua g\u00e2y ra. Khi c\u1ea5u tr\u00fac vi m\u00f4 ch\u1ee9a nhi\u1ec1u h\u01a1n ferit 30%, th\u00e9p kh\u00f4ng g\u1ec9 duplex c\u00f3 th\u1ec3 ch\u1ecbu \u0111\u01b0\u1ee3c n\u1ee9t \u0103n m\u00f2n \u1ee9ng su\u1ea5t clorua t\u1ed1t h\u01a1n th\u00e9p kh\u00f4ng g\u1ec9 304.<\/p>

Tuy nhi\u00ean, do s\u1ef1 c\u00f3 m\u1eb7t c\u1ee7a ferit n\u00ean th\u00e9p kh\u00f4ng g\u1ec9 hai pha d\u1ec5 b\u1ecb gi\u00f2n do hydro, \u0111i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 l\u00e0m gi\u1ea3m kh\u1ea3 n\u0103ng ch\u1ed1ng ch\u1ecbu c\u1ee7a th\u00e9p trong nh\u1eefng m\u00f4i tr\u01b0\u1eddng nh\u01b0 v\u1eady.<\/p>

\u01afu v\u00e0 nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a th\u00e9p kh\u00f4ng g\u1ec9 Duplex l\u00e0 g\u00ec?<\/h2>

Sau \u0111\u00e2y l\u00e0 nh\u1eefng \u01b0u \u0111i\u1ec3m v\u00e0 l\u1ee3i \u00edch c\u1ee7a th\u00e9p kh\u00f4ng g\u1ec9 martensitic:<\/p>

  1. \u0110\u1ed9 b\u1ec1n cao h\u01a1n v\u00e0 kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n t\u1ed1t h\u01a1n th\u00e9p kh\u00f4ng g\u1ec9 austenit v\u00e0 ferritic. <\/li>\n\n
  2. Kh\u1ea3 n\u0103ng \u0111\u1ecbnh h\u00ecnh d\u01b0\u1edbi \u00e1p su\u1ea5t t\u1ed1t h\u01a1n so v\u1edbi th\u00e9p ferritic v\u00e0 c\u00f3 \u0111\u1ed9 d\u1ebbo dai v\u01b0\u1ee3t tr\u1ed9i.<\/li>\n\n
  3. N\u00f3i chung kh\u00f4ng c\u1ea7n gia nhi\u1ec7t tr\u01b0\u1edbc ho\u1eb7c x\u1eed l\u00fd nhi\u1ec7t sau khi h\u00e0n, gi\u00fap \u0111\u01a1n gi\u1ea3n h\u00f3a quy tr\u00ecnh h\u00e0n.<\/li>\n\n
  4. C\u00f3 \u0111\u1ed9 b\u1ec1n cao v\u00e0 kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n v\u1edbi h\u00e0m l\u01b0\u1ee3ng c\u00e1c nguy\u00ean t\u1ed1 h\u1ee3p kim \u0111\u1eaft ti\u1ec1n th\u1ea5p h\u01a1n. \u0110i\u1ec1u n\u00e0y l\u00e0m cho n\u00f3 ti\u1ebft ki\u1ec7m chi ph\u00ed.<\/li><\/ol>

    Sau \u0111\u00e2y l\u00e0 nh\u1eefng nh\u01b0\u1ee3c \u0111i\u1ec3m v\u00e0 h\u1ea1n ch\u1ebf:<\/p>

    1. So v\u1edbi th\u00e9p austenit, lo\u1ea1i th\u00e9p n\u00e0y kh\u00f3 t\u1ea1o h\u00ecnh v\u00e0 gia c\u00f4ng h\u01a1n.<\/li>\n\n
    2. Th\u1ec3 hi\u1ec7n xu h\u01b0\u1edbng c\u1ee9ng l\u1ea1i v\u00e0 gi\u00f2n \u1edf nhi\u1ec7t \u0111\u1ed9 t\u1eeb 280\u00b0C \u0111\u1ebfn 500\u00b0C, \u0111\u1eb7c bi\u1ec7t l\u00e0 \u1edf 475\u00b0C.<\/li>\n\n
    3. Chi ph\u00ed ban \u0111\u1ea7u cao h\u01a1n so v\u1edbi th\u00e9p kh\u00f4ng g\u1ec9 ti\u00eau chu\u1ea9n.<\/li><\/ol>

      Th\u00e9p kh\u00f4ng g\u1ec9 Duplex \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 l\u00e0m g\u00ec?<\/h2>

      C\u00e1c lo\u1ea1i th\u00e9p kh\u00f4ng g\u1ec9 martensitic ph\u1ed5 bi\u1ebfn v\u00e0 \u1ee9ng d\u1ee5ng c\u1ee7a ch\u00fang nh\u01b0 sau:<\/p>

      Ng\u00e0nh c\u00f4ng nghi\u1ec7p<\/strong><\/td>\u1ee8ng d\u1ee5ng<\/strong><\/td>C\u00e1c l\u1edbp ph\u1ed5 bi\u1ebfn<\/strong><\/td><\/tr>
      D\u1ea7u kh\u00ed<\/td>\u1ed0ng, b\u1ec3 ch\u1ee9a<\/td>2205 (S32205), 2507 (S32750)<\/td><\/tr>
      X\u1eed l\u00fd h\u00f3a ch\u1ea5t v\u00e0 h\u00e0ng h\u1ea3i<\/td>\u1ed0ng, b\u1ed9 trao \u0111\u1ed5i nhi\u1ec7t, b\u00ecnh ch\u1ee9a<\/td>2205 (S32205), 2507 (S32750)<\/td><\/tr>
      Ch\u1ebf bi\u1ebfn th\u1ef1c ph\u1ea9m v\u00e0 \u0111\u1ed3 u\u1ed1ng<\/td>Thi\u1ebft b\u1ecb ch\u1ebf bi\u1ebfn th\u1ef1c ph\u1ea9m<\/td>2304 (S32304), LDX 2101 (S32101)<\/td><\/tr>
      K\u1ef9 thu\u1eadt h\u00e0ng h\u1ea3i<\/td>C\u00e1c th\u00e0nh ph\u1ea7n c\u1ea5u tr\u00fac, b\u1ed9 ph\u1eadn t\u00e0u<\/td>2507 (S32750), Z100 (S32760)<\/td><\/tr>
      X\u1eed l\u00fd n\u01b0\u1edbc th\u1ea3i<\/td>Thi\u1ebft b\u1ecb x\u1eed l\u00fd n\u01b0\u1edbc th\u1ea3i<\/td>2205 (S32205), 2304 (S32304)<\/td><\/tr>
      Ki\u1ebfn tr\u00fac v\u00e0 X\u00e2y d\u1ef1ng<\/td>Th\u00e0nh ph\u1ea7n k\u1ebft c\u1ea5u, c\u1ea7u<\/td>2205 (S32205), 2304 (S32304)<\/td><\/tr>
      Khai kho\u00e1ng v\u00e0 Luy\u1ec7n kim<\/td>Thi\u1ebft b\u1ecb khai th\u00e1c, thi\u1ebft b\u1ecb luy\u1ec7n kim<\/td>2205 (S32205), 2507 (S32750)<\/td><\/tr><\/tbody><\/table><\/figure>

      S\u1ea3n xu\u1ea5t v\u00e0 gia c\u00f4ng th\u00e9p kh\u00f4ng g\u1ec9 Duplex<\/h2>

      C\u00e1c b\u01b0\u1edbc c\u01a1 b\u1ea3n trong s\u1ea3n xu\u1ea5t th\u00e9p kh\u00f4ng g\u1ec9 hai l\u1edbp nh\u01b0 sau:<\/p>

      L\u00e0m vi\u1ec7c n\u00f3ng<\/h3>

      C\u00e1n n\u00f3ng. <\/p>

      Th\u00e9p \u0111\u00fac \u0111\u01b0\u1ee3c nung n\u00f3ng v\u00e0 \u0111\u01b0a qua c\u00e1c con l\u0103n \u0111\u1ec3 gi\u1ea3m \u0111\u1ed9 d\u00e0y v\u00e0 \u0111\u1ecbnh h\u00ecnh. Qu\u00e1 tr\u00ecnh n\u00e0y c\u1ea3i thi\u1ec7n c\u1ea5u tr\u00fac v\u00e0 t\u00ednh ch\u1ea5t c\u01a1 h\u1ecdc c\u1ee7a th\u00e9p.<\/p>

      R\u00e8n. <\/p>

      R\u00e8n bao g\u1ed3m vi\u1ec7c n\u00e9n v\u1eadt li\u1ec7u \u0111\u01b0\u1ee3c nung n\u00f3ng gi\u1eefa c\u00e1c khu\u00f4n \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c h\u00ecnh d\u1ea1ng mong mu\u1ed1n. Qu\u00e1 tr\u00ecnh n\u00e0y th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho c\u00e1c ph\u1ea7n d\u00e0y h\u01a1n ho\u1eb7c h\u00ecnh d\u1ea1ng ph\u1ee9c t\u1ea1p h\u01a1n.<\/p>

      Dung d\u1ecbch \u1ee7<\/h3>

      X\u1eed l\u00fd nhi\u1ec7t. <\/p>

      Th\u00e9p \u0111\u01b0\u1ee3c nung \u1edf nhi\u1ec7t \u0111\u1ed9 cao, th\u01b0\u1eddng l\u00e0 t\u1eeb 1.020\u00b0C \u0111\u1ebfn 1.100\u00b0C, t\u00f9y thu\u1ed9c v\u00e0o c\u1ea5p \u0111\u1ed9.<\/p>

      L\u00e0m m\u00e1t nhanh.<\/p>

      Sau khi nung n\u00f3ng, th\u00e9p \u0111\u01b0\u1ee3c l\u00e0m ngu\u1ed9i nhanh ch\u00f3ng, th\u01b0\u1eddng b\u1eb1ng c\u00e1ch l\u00e0m ngu\u1ed9i trong n\u01b0\u1edbc ho\u1eb7c kh\u00f4ng kh\u00ed. <\/p>

      L\u00e0m vi\u1ec7c ngu\u1ed9i (n\u1ebfu c\u1ea7n)<\/h3>

      C\u00e1n ngu\u1ed9i.<\/p>

      \u0110\u1ec3 c\u00f3 k\u00edch th\u01b0\u1edbc ch\u00ednh x\u00e1c ho\u1eb7c b\u1ec1 m\u1eb7t ho\u00e0n thi\u1ec7n t\u1ed1t h\u01a1n, th\u00e9p c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c c\u00e1n \u1edf nhi\u1ec7t \u0111\u1ed9 ph\u00f2ng. B\u01b0\u1edbc n\u00e0y tinh ch\u1ec9nh th\u00e9p h\u01a1n n\u1eefa.<\/p>

      V\u1ebd l\u1ea1nh.<\/p>

      Trong m\u1ed9t s\u1ed1 tr\u01b0\u1eddng h\u1ee3p, c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng k\u00e9o ngu\u1ed9i thay v\u00ec c\u00e1n. Qu\u00e1 tr\u00ecnh n\u00e0y k\u00e9o th\u00e9p qua khu\u00f4n \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c h\u00ecnh d\u1ea1ng c\u1ee5 th\u1ec3, th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 l\u00e0m d\u00e2y ho\u1eb7c \u1ed1ng.<\/p>

      X\u1eed l\u00fd nhi\u1ec7t cu\u1ed1i c\u00f9ng<\/h3>

      N\u1ebfu v\u1eadt li\u1ec7u \u0111\u00e3 tr\u1ea3i qua qu\u00e1 tr\u00ecnh l\u00e0m ngu\u1ed9i \u0111\u00e1ng k\u1ec3, c\u00f3 th\u1ec3 th\u1ef1c hi\u1ec7n x\u1eed l\u00fd nhi\u1ec7t gi\u1ea3m \u1ee9ng su\u1ea5t. Qu\u00e1 tr\u00ecnh n\u00e0y bao g\u1ed3m vi\u1ec7c nung th\u00e9p \u1edf nhi\u1ec7t \u0111\u1ed9 th\u1ea5p h\u01a1n (th\u01b0\u1eddng l\u00e0 kho\u1ea3ng 300\u00b0C \u0111\u1ebfn 400\u00b0C) \u0111\u1ec3 gi\u1ea3m \u1ee9ng su\u1ea5t b\u00ean trong m\u00e0 kh\u00f4ng \u1ea3nh h\u01b0\u1edfng \u0111\u00e1ng k\u1ec3 \u0111\u1ebfn c\u00e1c \u0111\u1eb7c t\u00ednh c\u01a1 h\u1ecdc.<\/p>

      Ho\u00e0n thi\u1ec7n v\u00e0 Ki\u1ec3m tra<\/h3>

      Th\u00e9p c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c l\u00e0m s\u1ea1ch v\u00e0 \u0111\u00e1nh b\u00f3ng \u0111\u1ec3 lo\u1ea1i b\u1ecf c\u1eb7n b\u1ea9n v\u00e0 c\u1ea3i thi\u1ec7n v\u1ebb ngo\u00e0i c\u0169ng nh\u01b0 kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n.<\/p>

      S\u1ea3n ph\u1ea9m cu\u1ed1i c\u00f9ng \u0111\u01b0\u1ee3c ki\u1ec3m tra t\u00ednh ch\u1ea5t c\u01a1 h\u1ecdc, kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n v\u00e0 k\u00edch th\u01b0\u1edbc \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o \u0111\u00e1p \u1ee9ng c\u00e1c ti\u00eau chu\u1ea9n.<\/p>

      Nh\u1eefng c\u00e2n nh\u1eafc ch\u00ednh<\/h3>

      Ki\u1ec3m so\u00e1t nhi\u1ec7t \u0111\u1ed9 v\u00e0 l\u00e0m m\u00e1t ch\u00ednh x\u00e1c l\u00e0 r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 duy tr\u00ec s\u1ef1 c\u00e2n b\u1eb1ng gi\u1eefa pha austenit v\u00e0 ferritic.<\/p>

      C\u1ea7n ph\u1ea3i x\u1eed l\u00fd nhi\u1ec7t v\u00e0 l\u00e0m m\u00e1t th\u00edch h\u1ee3p \u0111\u1ec3 ng\u0103n ng\u1eeba s\u1ef1 h\u00ecnh th\u00e0nh c\u00e1c pha gi\u00f2n c\u00f3 th\u1ec3 l\u00e0m gi\u1ea3m \u0111\u1ed9 d\u1ebbo dai v\u00e0 kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n.<\/p>

      Nhi\u1ec7t \u0111\u1ed9 \u0111\u1ec1 xu\u1ea5t cho qu\u00e1 tr\u00ecnh t\u1ea1o h\u00ecnh n\u00f3ng v\u00e0 \u1ee7\/ng\u00e2m<\/h3>

      Nhi\u1ec1u lo\u1ea1i th\u00e9p kh\u00f4ng g\u1ec9 hai l\u1edbp c\u00f3 ph\u1ea1m vi nhi\u1ec7t \u0111\u1ed9 khuy\u1ebfn ngh\u1ecb ri\u00eang bi\u1ec7t cho qu\u00e1 tr\u00ecnh t\u1ea1o h\u00ecnh n\u00f3ng v\u00e0 \u1ee7\/ng\u00e2m:<\/p>

      1. S32304 (1.4362)<\/li><\/ol>

        Ph\u1ea1m vi nhi\u1ec7t \u0111\u1ed9 t\u1ea1o h\u00ecnh n\u00f3ng: 1.150 \u0111\u1ebfn 950 \u00b0C (2.100 \u0111\u1ebfn 1.740 \u00b0F)<\/p>

        Nhi\u1ec7t \u0111\u1ed9 ng\u00e2m t\u1ed1i thi\u1ec3u: 980 \u00b0C (1.800 \u00b0F)<\/p>

        1. S32205 (1.4462)<\/li><\/ol>

          Ph\u1ea1m vi nhi\u1ec7t \u0111\u1ed9 t\u1ea1o h\u00ecnh n\u00f3ng: 1.230 \u0111\u1ebfn 950 \u00b0C (2.250 \u0111\u1ebfn 1.740 \u00b0F)<\/p>

          Nhi\u1ec7t \u0111\u1ed9 ng\u00e2m t\u1ed1i thi\u1ec3u: 1.040 \u00b0C (1.900 \u00b0F)<\/p>

          1. S32750 (1.4410)<\/li><\/ol>

            Ph\u1ea1m vi nhi\u1ec7t \u0111\u1ed9 t\u1ea1o h\u00ecnh n\u00f3ng: 1.235 \u0111\u1ebfn 1.025 \u00b0C (2.255 \u0111\u1ebfn 1.877 \u00b0F)<\/p>

            Nhi\u1ec7t \u0111\u1ed9 ng\u00e2m t\u1ed1i thi\u1ec3u: 1.050 \u00b0C (1.920 \u00b0F)<\/p>

            1. S32520 (1.4507)<\/li><\/ol>

              Ph\u1ea1m vi nhi\u1ec7t \u0111\u1ed9 t\u1ea1o h\u00ecnh n\u00f3ng: 1.230 \u0111\u1ebfn 1.000 \u00b0C (2.250 \u0111\u1ebfn 1.830 \u00b0F)<\/p>

              Nhi\u1ec7t \u0111\u1ed9 ng\u00e2m t\u1ed1i thi\u1ec3u: 1.080 \u00b0C (1.980 \u00b0F)<\/p>

              1. S32760 (1.4501)<\/li><\/ol>

                Ph\u1ea1m vi nhi\u1ec7t \u0111\u1ed9 t\u1ea1o h\u00ecnh n\u00f3ng: 1.230 \u0111\u1ebfn 1.000 \u00b0C (2.250 \u0111\u1ebfn 1.830 \u00b0F)<\/p>

                Nhi\u1ec7t \u0111\u1ed9 ng\u00e2m t\u1ed1i thi\u1ec3u: 1.100 \u00b0C (2.010 \u00b0F)<\/p>

                L\u1ecbch s\u1eed c\u1ee7a th\u00e9p kh\u00f4ng g\u1ec9 Duplex<\/h2>

                Nh\u1eefng n\u0103m 1920: H\u1ee3p kim th\u00e9p kh\u00f4ng g\u1ec9 hai l\u1edbp l\u1ea7n \u0111\u1ea7u ti\u00ean \u0111\u01b0\u1ee3c h\u00ecnh th\u00e0nh, \u0111\u1eb7t n\u1ec1n m\u00f3ng cho s\u1ef1 ph\u00e1t tri\u1ec3n.<\/p>

                Nh\u1eefng n\u0103m 1930: S\u1ea3n xu\u1ea5t h\u1ee3p kim duplex \u0111\u1ea7u ti\u00ean b\u1eaft \u0111\u1ea7u. C\u00e1c h\u1ee3p kim n\u00e0y ch\u1ee7 y\u1ebfu \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong s\u1ea3n xu\u1ea5t \u0111\u00fac v\u00ec h\u00e0m l\u01b0\u1ee3ng carbon cao.<\/p>

                Cu\u1ed1i nh\u1eefng n\u0103m 1960: C\u00e1c x\u01b0\u1edfng \u0111\u00fac kim lo\u1ea1i c\u00f3 th\u1ec3 s\u1ea3n xu\u1ea5t th\u00e9p duplex c\u00f3 h\u00e0m l\u01b0\u1ee3ng carbon th\u1ea5p v\u1edbi h\u00e0m l\u01b0\u1ee3ng crom v\u00e0 niken cao h\u01a1n.<\/p>

                Gi\u1eefa nh\u1eefng n\u0103m 1970: S\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a Duplex 2205 mang l\u1ea1i kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n v\u01b0\u1ee3t tr\u1ed9i. H\u1ee3p kim n\u00e0y v\u1eabn ph\u1ed5 bi\u1ebfn cho \u0111\u1ebfn ng\u00e0y nay.<\/p>

                Hi\u1ec7n t\u1ea1i: S\u1ef1 ph\u00e1t tri\u1ec3n li\u00ean t\u1ee5c d\u1eabn \u0111\u1ebfn s\u1ef1 ra \u0111\u1eddi c\u1ee7a th\u00e9p kh\u00f4ng g\u1ec9 hai l\u1edbp hi\u1ec7n \u0111\u1ea1i \u0111a d\u1ea1ng.<\/p>

                Nh\u1eefng \u0111i\u1ec1u kh\u00e1c b\u1ea1n n\u00ean bi\u1ebft v\u1ec1 th\u00e9p kh\u00f4ng g\u1ec9 Duplex<\/h2>

                B\u00e2y gi\u1edd b\u1ea1n \u0111\u00e3 hi\u1ec3u s\u00e2u h\u01a1n v\u1ec1 th\u00e9p kh\u00f4ng g\u1ec9 duplex. V\u1eabn c\u00f2n m\u1ed9t s\u1ed1 v\u1ea5n \u0111\u1ec1 ph\u1ed5 bi\u1ebfn \u0111\u00e1ng \u0111\u1ec3 b\u1ea1n ch\u00fa \u00fd:<\/p>

                Th\u00e9p kh\u00f4ng g\u1ec9 Duplex c\u00f3 b\u1ecb g\u1ec9 kh\u00f4ng?<\/h3>

                Th\u00e9p kh\u00f4ng g\u1ec9 Duplex c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng g\u1ec9 cao. Nh\u01b0ng n\u00f3 v\u1eabn c\u00f3 th\u1ec3 b\u1ecb g\u1ec9 v\u00e0 \u0103n m\u00f2n.<\/p>

                \u0110\u1ecdc li\u00ean quan<\/strong>
                Th\u00e9p kh\u00f4ng g\u1ec9 c\u00f3 b\u1ecb g\u1ec9 kh\u00f4ng?<\/a><\/p>

                Th\u00e9p kh\u00f4ng g\u1ec9 Duplex c\u00f3 \u0111\u1eaft kh\u00f4ng?<\/h3>

                Th\u00e9p kh\u00f4ng g\u1ec9 Duplex c\u00f3 th\u1ec3 \u0111\u1eaft h\u01a1n c\u00e1c lo\u1ea1i th\u00e9p kh\u00f4ng g\u1ec9 kh\u00e1c v\u00ec n\u00f3 c\u00f3 h\u00e0m l\u01b0\u1ee3ng h\u1ee3p kim cao v\u00e0 kh\u00f3 s\u1ea3n xu\u1ea5t. N\u00f3 c\u0169ng c\u00f3 th\u1ec3 ti\u1ebft ki\u1ec7m chi ph\u00ed h\u01a1n v\u00ec n\u00f3 b\u1ec1n h\u01a1n v\u00e0 c\u00f3 h\u00e0m l\u01b0\u1ee3ng niken th\u1ea5p h\u01a1n.<\/p>

                Th\u00e9p kh\u00f4ng g\u1ec9 Duplex c\u00f3 t\u1eeb t\u00ednh kh\u00f4ng?<\/h3>

                C\u00f3, th\u00e9p kh\u00f4ng g\u1ec9 duplex th\u01b0\u1eddng c\u00f3 t\u1eeb t\u00ednh. V\u00ec c\u1ea5u tr\u00fac c\u1ee7a n\u00f3 ch\u1ee9a c\u00e1c h\u1ea1t ferritic t\u1eeb t\u00ednh, n\u00ean n\u00f3 c\u00f3 th\u1ec3 \u00edt t\u1eeb t\u00ednh h\u01a1n th\u00e9p ferrite v\u00ec n\u00f3 ch\u1ee9a austenite.<\/p>

                \u0110\u1ecdc li\u00ean quan<\/strong>
                Th\u00e9p kh\u00f4ng g\u1ec9 c\u00f3 t\u1eeb t\u00ednh kh\u00f4ng?<\/a><\/p>

                H\u00e0m l\u01b0\u1ee3ng cacbon trong th\u00e9p Duplex l\u00e0 bao nhi\u00eau?<\/h3>

                H\u00e0m l\u01b0\u1ee3ng carbon c\u1ee7a th\u00e9p kh\u00f4ng g\u1ec9 duplex th\u01b0\u1eddng nh\u1ecf h\u01a1n 0,04%. H\u00e0m l\u01b0\u1ee3ng carbon th\u1ea5p n\u00e0y c\u00f9ng v\u1edbi h\u00e0m l\u01b0\u1ee3ng nit\u01a1 cao gi\u00fap gi\u1ea3m nguy c\u01a1 \u0103n m\u00f2n gi\u1eefa c\u00e1c h\u1ea1t. <\/p>

                Th\u00e9p kh\u00f4ng g\u1ec9 Duplex c\u00f3 t\u1ed1t h\u01a1n th\u00e9p kh\u00f4ng g\u1ec9 316 kh\u00f4ng?<\/h3>

                C\u00f3. Th\u00e9p kh\u00f4ng g\u1ec9 Duplex b\u1ec1n h\u01a1n 316<\/a>. N\u00f3 c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng n\u1ee9t \u0103n m\u00f2n do \u1ee9ng su\u1ea5t clorua t\u1ed1t h\u01a1n.<\/p>

                2205 Th\u00e9p kh\u00f4ng g\u1ec9 Duplex VS 316<\/h3>

                Th\u00e9p kh\u00f4ng g\u1ec9 duplex 2205 c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n v\u00e0 \u0111\u1ed9 b\u1ec1n t\u1ed1t h\u01a1n. 316 d\u1ec5 h\u00e0n h\u01a1n v\u00e0 c\u00f3 \u0111\u1ed9 b\u1ec1n \u1edf nhi\u1ec7t \u0111\u1ed9 th\u1ea5p t\u1ed1t h\u01a1n. 2205 th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c m\u00f4i tr\u01b0\u1eddng kh\u1eaft khe h\u01a1n, trong khi 316 ph\u1ed5 bi\u1ebfn trong c\u00e1c \u1ee9ng d\u1ee5ng h\u00e0ng h\u1ea3i v\u00e0 c\u00f4ng nghi\u1ec7p.<\/p>

                S\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa th\u00e9p kh\u00f4ng g\u1ec9 Duplex 2205 v\u00e0 2507 l\u00e0 g\u00ec?<\/h3>

                Th\u00e9p kh\u00f4ng g\u1ec9 Duplex 2507 c\u00f3 \u0111\u1ed9 b\u1ec1n, kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n v\u00e0 \u0111\u1ed9 c\u1ee9ng t\u1ed1t h\u01a1n 2205. \u0110\u1ed9 b\u1ec1n c\u1ee7a n\u00f3 c\u0169ng cao h\u01a1n. Nh\u01b0ng th\u00e9p kh\u00f4ng g\u1ec9 Duplex 2205 c\u00f3 gi\u00e1 th\u00e0nh th\u1ea5p h\u01a1n.<\/p>

                T\u00f3m t\u1eaft & Th\u00eam n\u1eefa<\/h2>

                B\u00e0i vi\u1ebft n\u00e0y gi\u1ea3i th\u00edch ng\u1eafn g\u1ecdn v\u1ec1 \u0111\u1ecbnh ngh\u0129a c\u1ee7a th\u00e9p kh\u00f4ng g\u1ec9 duplex, th\u00e0nh ph\u1ea7n, t\u00ednh ch\u1ea5t, c\u1ea5p \u0111\u1ed9, \u1ee9ng d\u1ee5ng v\u00e0 c\u00e1c kh\u00eda c\u1ea1nh quan tr\u1ecdng kh\u00e1c. \u0110\u1ec3 t\u00ecm hi\u1ec3u th\u00eam v\u1ec1 th\u00e9p kh\u00f4ng g\u1ec9 ho\u1eb7c c\u00e1c lo\u1ea1i th\u00e9p kh\u00e1c, h\u00e3y xem blog c\u1ee7a ch\u00fang t\u00f4i<\/a> ho\u1eb7c li\u00ean h\u1ec7 v\u1edbi c\u00e1c chuy\u00ean gia kim lo\u1ea1i c\u1ee7a ch\u00fang t\u00f4i<\/a>.<\/p>

                L\u00e0 nh\u00e0 s\u1ea3n xu\u1ea5t v\u00e0 cung c\u1ea5p gi\u1ea3i ph\u00e1p h\u00e0ng \u0111\u1ea7u v\u1ec1 th\u00e9p chuy\u00ean d\u1ee5ng, ch\u00fang t\u00f4i cung c\u1ea5p c\u00e1c gi\u1ea3i ph\u00e1p \u1ee9ng d\u1ee5ng \u0111a ng\u00e0nh v\u00e0 d\u1ecbch v\u1ee5 t\u00f9y ch\u1ec9nh v\u1edbi cam k\u1ebft ch\u1ea5t l\u01b0\u1ee3ng 100%, cam k\u1ebft ph\u00e1t tri\u1ec3n c\u00f9ng kh\u00e1ch h\u00e0ng. Gh\u00e9 th\u0103m trang web c\u1ee7a ch\u00fang t\u00f4i<\/a> \u0111\u1ec3 t\u00ecm hi\u1ec3u th\u00eam, ho\u1eb7c g\u1eedi cho ch\u00fang t\u00f4i m\u1ed9t b\u00e1o gi\u00e1<\/a>v\u00e0 ch\u00fang t\u00f4i s\u1ebd li\u00ean h\u1ec7 v\u1edbi b\u1ea1n s\u1edbm!<\/p>","protected":false},"excerpt":{"rendered":"

                Th\u00e9p kh\u00f4ng g\u1ec9 Duplex l\u00e0 v\u1eadt li\u1ec7u quan tr\u1ecdng trong k\u1ef9 thu\u1eadt hi\u1ec7n \u0111\u1ea1i. H\u1ee3p kim \u0111a n\u0103ng n\u00e0y \u0111\u01b0\u1ee3c bi\u1ebft \u0111\u1ebfn v\u1edbi c\u1ea5u tr\u00fac vi m\u00f4 hai pha. N\u00f3 [\u2026]<\/p>","protected":false},"author":1,"featured_media":7840,"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":[4216,112],"tags":[4275],"class_list":["post-7868","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-type","category-stainless-steel","tag-featured"],"acf":[],"_links":{"self":[{"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/posts\/7868","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\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/comments?post=7868"}],"version-history":[{"count":0,"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/posts\/7868\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/media\/7840"}],"wp:attachment":[{"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/media?parent=7868"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/categories?post=7868"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/tags?post=7868"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}