公开(公告)号：US20240167136A1

公开(公告)日：2024-05-23

申请号：US18025277

申请日：2021-11-25

Applicant: ANGANG STEEL COMPANY LIMITED

Inventor： Yi DONG ,  Rendong LIU ,  Xiaoguang SHI ,  Chengqian SUN ,  Junxiong WANG ,  Chufei HAN

IPC: C22C38/38 ,  C21D6/00 ,  C21D7/13 ,  C22C38/00 ,  C22C38/02 ,  C22C38/06 ,  C22C38/22 ,  C22C38/24 ,  C22C38/26 ,  C22C38/28

CPC classification number: C22C38/38 ,  C21D6/002 ,  C21D7/13 ,  C22C38/002 ,  C22C38/02 ,  C22C38/06 ,  C22C38/22 ,  C22C38/24 ,  C22C38/26 ,  C22C38/28 ,  C21D2211/001 ,  C21D2211/005 ,  C21D2211/008

Abstract: Provided are a high-strength and high-plasticity hot-forming steel with oxidation resistance for automobiles and a hot-forming process thereof, and the hot-forming steel has chemical compositions in mass percentages as follows: C: 0.35%-50%, Si: ≤0.20%, Mn: 1.50%-2.50%, P: 0.050%-0.10%, S≤0.004%, Als: 0.02%-0.06%, Nb: 0.03%-0.07%, Ti: 0.020%-0.050%, V: 0.08%-0.15%, Cr: 1.50%-3.20%, Mo: 0.10%-0.30%, B: ≤0.0040%, N≤0.005%, the balance Fe and inevitable impurities. The hot-forming steel provided in the present invention has high oxidation resistance, high strength and plasticity, does not need atmosphere protection during hot forming, and does not need shot blasting treatment after hot forming.

公开(公告)号：US20240271260A1

公开(公告)日：2024-08-15

申请号：US18022613

申请日：2021-11-25

Applicant: ANGANG STEEL COMPANY LIMITED

Inventor： Yi DONG ,  Xiaoguang SHI ,  Rendong LIU ,  Chengqian SUN ,  Chufei HAN ,  Junxiong WANG

IPC: C22C38/38 ,  C21D8/02 ,  C22C38/00 ,  C22C38/02 ,  C22C38/06 ,  C22C38/22 ,  C22C38/24 ,  C22C38/26 ,  C22C38/28 ,  C22C38/32

CPC classification number: C22C38/38 ,  C21D8/0226 ,  C22C38/002 ,  C22C38/02 ,  C22C38/06 ,  C22C38/22 ,  C22C38/24 ,  C22C38/26 ,  C22C38/28 ,  C22C38/32 ,  C21D2211/001 ,  C21D2211/005 ,  C21D2211/008

Abstract: Provided are a high-plasticity hot-forming steel with oxidation resistance for automobiles and a hot-forming process thereof, and the hot-forming steel has chemical compositions in mass percentages as follows: C: 0.18%-0.28%, Si: ≤0.20%, Mn: 1.20%-2.0%, P: 0.030%-0.080%, S≤0.004%, Als: 0.02%-0.06%, Nb: 0.02%-0.06%, Ti: 0.025%-0.045%, V: 0.05%-0.15%, Cr: 0.5%-2.50%, Mo: 0.10%-0.30%, B: 0.0015%-0.0035%, N≤0.005%, the balance Fe and inevitable impurities. The hot-forming steel provided in the present invention has high oxidation resistance, high plasticity. The steel does not need atmosphere protection during hot forming, and does not need shot blasting treatment after hot forming.