公开(公告)号：US20230332264A1

公开(公告)日：2023-10-19

申请号：US18247814

申请日：2021-07-19

申请人： INSTITUTE OF RESEARCH OF IRON AND STEEL, JIANGSU PROVINCE/SHA-STEEL, CO. LTD (CN) ,  ZHANGJIAGANG YANGTZE RIVER COLD ROLLED PLATE CO. LTD ,  JIANGSU SHAGANG GROUP CO., LTD.

发明人： Chongxiang YUE ,  Shengjie WU ,  Jiadong LU ,  Hui LI

IPC分类号： C23G1/08 ,  B22D11/00 ,  C22C38/48 ,  C22C38/44 ,  C22C38/42 ,  C22C38/34 ,  C22C38/04 ,  C22C33/04 ,  C22C38/06 ,  C22C38/02 ,  C21D9/52 ,  C22C38/50 ,  C22C38/46 ,  C22C38/00 ,  C21D6/00 ,  C21D8/02

CPC分类号： C21D9/52 ,  B22D11/001 ,  C21D6/004 ,  C21D6/005 ,  C21D6/008 ,  C21D8/0205 ,  C21D8/0226 ,  C21D8/0263 ,  C21D8/0278 ,  C22C33/04 ,  C22C38/001 ,  C22C38/002 ,  C22C38/004 ,  C22C38/008 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/34 ,  C22C38/42 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  C22C38/50 ,  C23G1/08 ,  C22C2202/02

摘要： A high-grade non-oriented silicon steel and a production method are provided. The non-oriented silicon steel includes the following chemical components in percent by mass: 0.002-0.004% of C, not greater than 0.003% of S, 1.4-1.7% of Si, 0.7-0.95% of Mn, not greater than 0.03% of P, 0.015-0.035% of Sn; and 11×([Si]-1.4%)=14×([Mn]-0.7%). In the production method, the heating temperature of a continuous casting billet is 1,120-1,150° C.; the finishing temperature in finish rolling is 890±15° C.; the rolling reduction of the last pass of finish rolling is not less than 30%, the total rolling reduction of the last two passes of finish rolling is not less than 50%, and the coiling temperature is 650±20° C.; normalizing treatment is avoided before acid continuous rolling.

公开(公告)号：US20240011121A1

公开(公告)日：2024-01-11

申请号：US18245885

申请日：2021-08-04

申请人： INSTITUTE OF RESEARCH OF IRON AND STEEL, JIANGSU PROVINCE/SHA-STEEL, CO. LTD (CN) ,  ZHANGJIAGANG YANGTZE RIVER COLD ROLLED PLATE CO. LTD ,  JIANGSU SHAGANG GROUP CO., LTD.

发明人： Chongxiang YUE ,  Jiadong LU ,  Yanzhao ZHOU ,  Hualong LI

IPC分类号： C21D9/52 ,  C21C1/02 ,  C21C5/28 ,  C21C7/00 ,  C21C7/10 ,  C22C33/04 ,  C22C38/50 ,  C22C38/48 ,  C22C38/46 ,  C22C38/44 ,  C22C38/42 ,  C22C38/04 ,  C22C38/02 ,  C22C38/00 ,  C21D8/02 ,  C21D6/00 ,  C21D1/84 ,  C21D1/74 ,  C23G1/08

CPC分类号： C21D9/52 ,  C21C1/02 ,  C21C5/28 ,  C21C7/0006 ,  C21C7/10 ,  C22C33/04 ,  C22C38/50 ,  C22C38/48 ,  C22C38/46 ,  C22C38/44 ,  C22C38/42 ,  C22C38/04 ,  C22C38/02 ,  C22C38/008 ,  C22C38/004 ,  C22C38/001 ,  C22C38/002 ,  C21D8/0205 ,  C21D8/021 ,  C21D8/0226 ,  C21D8/0236 ,  C21D8/0263 ,  C21D8/0278 ,  C21D6/004 ,  C21D6/005 ,  C21D6/008 ,  C21D1/84 ,  C21D1/74 ,  C23G1/08 ,  C22C2202/02

摘要： A non-oriented silicon steel and a production method are provided. The non-oriented silicon steel is prepared by using the processes of molten iron desulfurization, converter smelting, RH refining, continuous casting, hot rolling, acid tandem rolling, annealing, coating and finishing, and a chemical composition is as follows in mass percent:



C≤0.003%, S≤0.008%, Si: 0.35%+Δ1, Mn: 0.15-0.25%, P: 0.04-0.06%, Sn: 0.015%+Δ2, Nb≤0.004%, V≤0.004%, Ti≤0.005%, Mo≤0.004%, Cr≤0.03%, Ni≤0.03%, Cu≤0.03%, N≤0.003% and the balance of Fe and inevitable inclusions. The non-oriented silicon steel has the iron loss P1.5/50≤5.5 W/kg and the magnetic induction intensity B5000≥1.75 when having the thickness of 0.5 mm, and desulfurization is not needed in the RH refining process.

公开(公告)号：US20230416865A1

公开(公告)日：2023-12-28

申请号：US18247741

申请日：2020-11-12

申请人： INSTITUTE OF RESEARCH OF IRON AND STEEL, JIANGSU PROVINCE/SHA-STEEL, CO. LTD (CN) ,  ZHANGJIAGANG RONGSHENG SPECIAL STEEL CO. LTD. ,  JIANGSU SHAGANG GROUP CO., LTD.

发明人： Han MA ,  Kui SHEN ,  Xianjun HU ,  Lei WANG

IPC分类号： C21D9/52 ,  C22C33/04 ,  C22C38/32 ,  C22C38/28 ,  C22C38/24 ,  C22C38/06 ,  C22C38/04 ,  C22C38/02 ,  C22C38/00 ,  C22C38/20 ,  C21B13/12 ,  C21D7/13

CPC分类号： C21D9/525 ,  C22C33/04 ,  C22C38/32 ,  C22C38/28 ,  C22C38/24 ,  C22C38/06 ,  C22C38/04 ,  C22C38/02 ,  C22C38/002 ,  C22C38/001 ,  C22C38/20 ,  C21B13/12 ,  C21D7/13 ,  C21D2261/00

摘要： A wire rod for a 5000 MPa-grade diamond wire and a production method are provided. The wire rod includes the following chemical components: 1.01% to 1.1% of carbon, 0.15% to 0.4% of silicon, 0.3% to 0.6% of manganese, 0.01% to 0.4% of chromium, 0.0005% to 0.002% of boron and/or 0.01% to 0.09% of vanadium; and the balance of iron and impurities. The production method includes vacuum melting, electroslag remelting and/or vacuum consumable melting, grinding after cogging/forging, high-speed wire rolling and cooling, and cogging at 1030° C. to 1060° C. The wire rod, with structural uniformity and tensile strength of more than or equal to 1320 MPa, can be configured to prepare 5000 MPa-grade steel wires with a diameter of 40 μm to 46 μm.

公开(公告)号：US20240068064A1

公开(公告)日：2024-02-29

申请号：US18261657

申请日：2021-04-12

申请人： INSTITUTE OF RESEARCH OF IRON AND STEEL, JIANGSU PROVINCE/SHA-STEEL, CO. LTD (CN) ,  JIANGSU SHAGANG GROUP CO., LTD.

发明人： Han MA ,  Yun ZHOU ,  Jiaqi ZHAO ,  Yu ZHANG ,  Huande CHEN

IPC分类号： C21D9/08 ,  C21C7/00 ,  C21C7/064 ,  C21D1/84 ,  C21D6/00 ,  C21D8/10 ,  C22C33/06 ,  C22C38/00 ,  C22C38/04 ,  C22C38/06 ,  C22C38/42 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  C22C38/50 ,  C22C38/54

CPC分类号： C21D9/08 ,  C21C7/0006 ,  C21C7/064 ,  C21D1/84 ,  C21D6/004 ,  C21D6/005 ,  C21D6/008 ,  C21D8/105 ,  C22C33/06 ,  C22C38/001 ,  C22C38/002 ,  C22C38/04 ,  C22C38/06 ,  C22C38/42 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  C22C38/50 ,  C22C38/54 ,  C21D2211/002 ,  C21D2211/005

摘要： The present invention discloses a 400 MPa corrosion-resistant steel bar and a production method thereof. The steel bar includes the following chemical ingredients: 9.5-10.4% of Cr, 1.0-1.2% of Mo, 0.3-0.6% of Mn, 0.01-1% of Ni, 0.01-0.5% of Cu, at most 0.014% of C, at most 0.004% of N, 0.01-0.05% of Nb, 0.2-0.6% of Si, and the balance of Fe, where Cr+Mo+0.5Mn+0.35Ni+0.25Cu is 11.1-12.2%, and C+N+0.3Si+Mn+1.8Nb is 0.4-0.8%.