公开(公告)号：US20240100579A1

公开(公告)日：2024-03-28

申请号：US17766218

申请日：2019-12-03

Applicant: ZHANGJIAGANG HONGCHANG STEEL PLATE CO., LTD. ,  JIANGSU SHAGANG GROUP CO., LTD. ,  INSTITUTE OF RESEARCH OF IRON AND STEEL, JIANGSU PROVINCE/SHA-STEEL, CO., LTD.

Inventor： RUI MAO ,  SHENDONG MAO ,  FEI WANG ,  HANG SU

IPC: B09B3/40 ,  B01D53/50 ,  B01D53/80 ,  B01D53/96 ,  B09B3/70 ,  C01B17/50 ,  C01F11/08 ,  C22B1/16

CPC classification number: B09B3/40 ,  B01D53/502 ,  B01D53/80 ,  B01D53/96 ,  B09B3/70 ,  C01B17/506 ,  C01F11/08 ,  C22B1/16 ,  B01D2251/404 ,  B01D2251/602 ,  B01D2251/604 ,  B01D2257/302 ,  B01D2258/0283 ,  B09B2101/30

Abstract: The present invention discloses a resource recovery method and a resource recovery system of desulfurized ash. The resource recovery method comprises: washing desulfurized ash with water, and performing solid-liquid separation to obtain solid residues rich in calcium sulfite and calcium sulfate and a solution rich in calcium hydroxide; preparing the solution into desulfurized slurry; and roasting the solid residues under the action of a reducing agent to obtain flue gas rich in sulfur dioxide and residues rich in calcium oxide. Therefore, the recovery of sulfur and calcium in the desulfurized ash is realized, and no solid waste, liquid waste, gas waste, etc. are produced in the process.

公开(公告)号：US20240068064A1

公开(公告)日：2024-02-29

申请号：US18261657

申请日：2021-04-12

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

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

IPC: 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 classification number: 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

Abstract: 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%.

公开(公告)号：US20220340996A1

公开(公告)日：2022-10-27

申请号：US17764166

申请日：2019-10-17

Applicant: INSTITUTE OF RESEARCH OF IRON AND STEEL, JIANGSU PROVINCE/SHA-STEEL CO., LTD ,  ZHANGJIAGANG RONGSHENG SPECIAL STEEL CO., LTD. ,  JIANGSU SHAGANG GROUP CO., LTD.

Inventor： CHANGDONG ZOU ,  HAN MA ,  JIAQI ZHAO ,  KUI SHEN ,  XIAOFENG CAI ,  YIXIN SHI ,  YONGLIN HUANG

IPC: C21D11/00 ,  C22C38/50 ,  C22C38/48 ,  C22C38/46 ,  C22C38/44 ,  C22C38/42 ,  C22C38/06 ,  C22C38/04 ,  C22C38/02 ,  C22C38/00 ,  C21D9/52 ,  C21D8/06 ,  C21D6/00 ,  B22D11/115 ,  C21C7/064 ,  C21C7/068 ,  C21C7/10 ,  B21B1/46 ,  B21B45/00

Abstract: The present invention discloses a wire rod for an ultrahigh-strength steel cord and a manufacturing method thereof. The manufacturing method includes: smelting molten steel where inclusions in sizes ≥5 μm are at a number density ≤0.5/mm2 and sizes of inclusions are ≤30 μm; casting the molten steel into an ingot blank with a center carbon segregation value of 0.92-1.08; cogging the ingot blank into an intermediate blank with a center carbon segregation value of 0.95-1.05; rolling the intermediate blank into a wire rod; and performing temperature control cooling on the wire rod to obtain a wire rod with high purity, high homogeneity and tensile strength ≤1,150 MPa. The wire rod may be used for an ultrahigh-strength steel cord with single tensile strength ≥3,600 MPa.

公开(公告)号：US20220220573A1

公开(公告)日：2022-07-14

申请号：US17613917

申请日：2019-07-22

Applicant: INSTITUTE OF RESEARCH OF IRON & STEEL, JIANGSU PROVINCE/SHA-STEEL, CO., LTD. ,  ZHANGJIAGANG HONGCHANG STEEL PLATE CO., LTD. ,  JIANGSU SHAGANG GROUP CO., LTD.

Inventor： YU ZHANG ,  HAN MA ,  YUN ZHOU ,  HUANDE CHEN

IPC: C21D9/00 ,  C22C38/54 ,  C22C38/50 ,  C22C38/48 ,  C22C38/46 ,  C22C38/44 ,  C22C38/06 ,  C22C38/04 ,  C22C38/02 ,  C21D8/06 ,  C21D6/00 ,  B22D11/115

Abstract: Disclosed are a high-strength steel bar and a production method therefor. The high-strength steel bar comprises, by mass percentage, the following chemical components: C: 0.15-0.32%, Si+Mn: 0.5-1.9%, Mn+Cr+Mo+Ni: 1.1-2.1%, V: 0.02-0.8%, at least one of Nb, Ti and Al: 0.01-0.3%, and the balance of Fe and inevitable impurities; wherein Mn=(2.5-3.5)Si, and a carbon equivalent satisfies Ceq=C+Mn/6+(Cr+Mo+V)/5+(Cu+Ni)/15≤0.56%.

公开(公告)号：US20240417830A1

公开(公告)日：2024-12-19

申请号：US18703948

申请日：2022-01-27

Applicant: INSTITUTE OF RESEARCH OF IRON AND STEEL, JIANGSU PROVINCE/SHA-STEEL, CO. LTD (CN) ,  Jiangsu Shagang Group Co., Ltd. ,  ZHANGJIAGANG YANGTZE RIVER COLD ROLLED PLATE CO., LTD

Inventor： Chongxiang YUE ,  Hongwei QIAN ,  Shengjie WU ,  Dongfang ZHAN

IPC: C22C38/02 ,  C21D1/26 ,  C21D6/00 ,  C21D8/10 ,  C21D8/12 ,  C21D9/46 ,  C22C33/04 ,  C22C38/00 ,  C22C38/04 ,  C22C38/06

Abstract: A non-oriented silicon steel for driving motors of new energy vehicles and a production method thereof. The silicon steel is produced sequentially by steel smelting, continuous casting, hot rolling, normalizing, acid washing, single stand cold rolling without pre-heating, annealing, cooling, coating, and finishing. During steel smelting, no Cu, Cr, Ni, Nb, V, and Ti are added. The silicon steel comprises the following chemical ingredients: Si: 2.95%-3.15%, Al: 0.75%-0.95%, Si+2Al: 4.6%-4.9%, Mn: 0.5%-0.7%, Sn: 0.03%-0.04%, C≤0.0025%, with the balance being iron, wherein Mn/S≥380, and Al/N≥200. In the present application, the strength is improved while the magnetic performance is ensured, to solve the problem in the prior art that the magnetic performance and strength cannot be pursued at the same time, thus meeting the requirements for use in driving motors of new energy vehicles.

公开(公告)号：US20240279782A1

公开(公告)日：2024-08-22

申请号：US18570323

申请日：2021-07-07

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

Inventor： Chongxiang YUE ,  Jiadong LU ,  Shengjie WU ,  Hongwei QIAN

IPC: C22C38/02 ,  C21D1/28 ,  C21D6/00 ,  C21D8/12 ,  C22C38/04

CPC classification number: C22C38/02 ,  C21D1/28 ,  C21D6/008 ,  C21D8/1205 ,  C21D8/1222 ,  C21D8/1272 ,  C21D8/1283 ,  C22C38/04

Abstract: The present application discloses a non-oriented silicon steel and a method for producing the same. The production method includes: carrying out steelmaking in accordance with 0.8-1.1% of Si and 0.2-0.4% of Mn, without the addition of Sn and Sb, and making a cast billet; heating the cast billet to 1060-1120° C., then rolling and finish rolling and coiling the cast billet into a hot rolled coil with a thickness of 3.00±0.25 mm, where the start-rolling temperature for finish rolling is ≤872° C.+1000*(11*[Si]−14*[Mn]+21*[Al]), the end-rolling temperature for finish rolling is ≤820° C., and the coiling temperature is ≤560° C.; normalizing and acid tandem rolling, where the normalizing temperature is 850-900° C.; and annealing at the temperature for final annealing of 820-880° C., cooling, coating and finishing are carried out to obtain the non-oriented silicon steel.

公开(公告)号：US20230332264A1

公开(公告)日：2023-10-19

申请号：US18247814

申请日：2021-07-19

Applicant: 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.

Inventor： Chongxiang YUE ,  Shengjie WU ,  Jiadong LU ,  Hui LI

IPC: 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 classification number: 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

Abstract: 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：US20240336988A1

公开(公告)日：2024-10-10

申请号：US18575724

申请日：2021-08-04

Applicant: INSTITUTE OF RESEARCH OF IRON & STEEL, JIANGSU PROVINCE/SHA-STEEL, CO. LTD. ,  JIANGSU SHAGANG STEEL CO., LTD. ,  JIANGSU SHAGANG GROUP CO., LTD.

Inventor： Jinbo QU ,  Fan ZHEN ,  Chunjuan SHAO ,  Hao YANG

IPC: C21D8/02 ,  C21D1/28 ,  C21D9/46 ,  C22C38/02 ,  C22C38/04 ,  C22C38/44

CPC classification number: C21D8/0263 ,  C21D1/28 ,  C21D8/0226 ,  C21D9/46 ,  C22C38/02 ,  C22C38/04 ,  C22C38/44 ,  C21D2211/005 ,  C21D2211/009

Abstract: A plastic mold steel plate and a method for producing the same. The method includes: heating a billet, the temperature of a soaking section being 1210˜1250° C.; rolling into a steel plate, an initial rolling temperature being 1060˜1140° C., and a final rolling temperature being 980˜1050° C.; moving the steel plate to a cooling bed for air cooling to 200° C. or lower; then normalizing, a normalizing temperature being Ac3+60° C. to Ac3+90° C.; after normalizing, moving the steel plate to the cooling bed for air cooling to Bf−50° C. to Bf−20° C.; finally, cross-stacking the steel plate with a ferritic pearlitic steel plate with a temperature of 450˜550° C.; during the stacking period, self-tempering the steel plate until the temperature of the steel plate is reduced to Bf−50° C. to Bf−20° C.; and after that, unstacking and air cooling.

公开(公告)号：US20240011121A1

公开(公告)日：2024-01-11

申请号：US18245885

申请日：2021-08-04

Applicant: 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.

Inventor： Chongxiang YUE ,  Jiadong LU ,  Yanzhao ZHOU ,  Hualong LI

IPC: 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 classification number: 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

Abstract: 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

Applicant: 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.

Inventor： Han MA ,  Kui SHEN ,  Xianjun HU ,  Lei WANG

IPC: 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 classification number: 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

Abstract: 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.