Patents Assigned to Baoshan Iron & Steel Co., Ltd.
  • Publication number: 20210101230
    Abstract: A grain-oriented silicon steel with low iron loss, wherein the silicon steel is provided with a plurality of grooves on its surface, each of the grooves is 10-60 ?m in width and 5-40 ?m in depth, and the spacing between adjacent grooves is 1-10 mm. The manufacturing method therefor comprises: scoring the surface of the grain-oriented silicon steel with low iron loss by using a laser in order to form the grooves. The grain-oriented silicon steel with low iron loss can maintain the magnetic domain refining effect in a stress-relief annealing process, and avoid the introduction of more residual stress.
    Type: Application
    Filed: January 24, 2018
    Publication date: April 8, 2021
    Applicant: BAOSHAN IRON & STEEL CO., LTD.
    Inventors: Meihong WU, Zipeng ZHAO, Guobao LI, Kanyi SHEN, Zhuochao HU, Chen LING, Huande SUN, Huabing ZHANG
  • Patent number: 10961611
    Abstract: A high-strength steel having a yield strength at a level of 800 MPa and a method of manufacturing the same, with the components and amounts thereof by weight percentage being: C: 0.06-0.14%, Si: 0.1-0.30%, Mn: 0.8-1.60%, Cr: 0.2-0.70%, Mo: 0.1-0.40%, Ni: 0-0.30%, Nb: 0.01-0.030%, Ti: 0.01-0.030%, V: 0.01-0.05%, B: 0.0005-0.0030%, Al: 0.02-0.06%, Ca: 0.001-0.004%, N: 0.002-0.005%, P?0.02%, S?0.01%, O?0.008%, the balance of Fe and unavoidable impurities; wherein the above elements meet the following relationships: 0.40%<Ceq<0.50%, Ceq=C+Mn/6+(Cr+Mo+V)/5+(Ni+Cu)/15; 0.7%?Mo+0.8Ni+0.4Cr+6V?1.1%; 3.7?Ti/N?7.0; 1.0?Ca/S?3.0.
    Type: Grant
    Filed: December 8, 2015
    Date of Patent: March 30, 2021
    Assignee: Baoshan Iron & Steel Co., Ltd.
    Inventors: Gang Liu, Ana Yang, Zigang Li, Fengming Song
  • Publication number: 20210071100
    Abstract: Disclosed is a method for using cold rolling magnetic filtration waste, comprising using the cold rolling magnetic filtration waste as a fluxing agent for a high-ash-fusion coal so as to achieve the technical requirements of a high melting point coal in dry coal powder gasification and liquid slagging. The cold rolling magnetic filtration waste contains solid particulates with very fine particles (iron-containing particles mainly produced by friction), and the surface thereof has a cold rolling oil attached thereto, and same reacts with other aluminosilicates in coal ash at a high temperature to produce low temperature eutectic compounds such as fayalite (Fe2SiO4) and hercynite (Fe2Al2O4). The fluxing agent has characteristics such as having fine particles, being free of inorganic mineral substances, having an effective ingredient in a high content, operation thereof being simple, and being free of pollution.
    Type: Application
    Filed: January 11, 2019
    Publication date: March 11, 2021
    Applicant: BAOSHAN IRON & STEEL CO., LTD.
    Inventors: Kangjian WANG, Peilei QU
  • Patent number: 10941459
    Abstract: An aluminium-zinc-hot-dipped and colour-coated steel plate having a 600 MPa yield strength grade and a high elongation and a manufacturing method thereof, with the chemical components in mass percentage of a substrate of the steel plate being: 0.07-0.15% of C, 0.02-0.5% of Si, 1.3-1.8% of Mn, N?0.004%, S?0.01%, Ti?0.20%, Nb?0.060%, and the balance being Fe and other inevitable impurities, and meanwhile satisfying the conditions of: (C+Mn/6)?0.3%; Mn/S?150; Nb satisfying 0.01%?(Nb?0.22C?1.1N)?0.06% where no Ti is contained; Ti satisfying 0.5?Ti/C?1.5 where no Nb is contained; and 0.04%?(Ti+Nb)?0.26% where Ti and Nb are added in combination. The steel plate has a yield strength of ?600 MPa, a tensile strength of ?650 MPa, an elongation after fracture of ?12%, a good strength and toughness and an excellent corrosion resistance.
    Type: Grant
    Filed: July 25, 2016
    Date of Patent: March 9, 2021
    Assignee: Baoshan Iron & Steel Co., Ltd.
    Inventors: Jun Li, Dechao Xu, Hailing Mu, Yusheng Zhao, Yun-feng Liu
  • Publication number: 20210047706
    Abstract: Disclosed is a manufacturing method for a high silicon grain oriented electrical steel sheet, the silicon content of the high silicon grain oriented electrical steel is greater than 4 wt %, comprising the steps of: (1) performing decarburization annealing of a cold-rolled steel plate; (2) allowing high silicon alloy particles in a completely solid state to collide at a high speed with the surface of the decarburization annealed steel plate to be sprayed, thus forming a high silicon alloy coating on the surface of the steel plate to be sprayed; (3) coating a release agent and drying; and (4) annealing. The manufacturing method for the high silicon grain oriented electrical steel sheet of the present invention is inexpensive, and, the high silicon grain oriented electrical steel sheet produced is of stable quality and is provided with great magnetic performance.
    Type: Application
    Filed: March 25, 2019
    Publication date: February 18, 2021
    Applicant: BAOSHAN IRON & STEEL CO., LTD.
    Inventors: Huabing ZHANG, Shuangjie CHU, Guobao LI, Wen XIAO, Baojun LIU, Yongjie YANG, Kanyi SHEN, Dan HAN, Zhining HU
  • Patent number: 10920298
    Abstract: A steel plate having excellent resistance to fatigue crack growth and manufacturing method thereof, wherein the components of the steel plate in weight percentage are: 0.040-0.070% of C, 0.40-0.70% of Si, 1.30-1.60% of Mn, less than or equal to 0.013% of P, less than or equal to 0.003% of S, less than or equal to 0.30% of Cu, less than or equal to 0.30% of Ni, less than or equal to 0.10% of Mo, 0.008-0.018% of Ti, 0.015-0.030% of Nb, less than or equal to 0.0040% of N, 0.0010-0.0040% of Ca, and the balance being Fe and inevitable impurities. By controlling [% C]×[% Si] between 0.022-0.042, {([% C]+3.33[% Nb])×[% Si]}×Vcooling rate/Tcooling-stopping between 1.15×10?4˜2.2×10?3, carrying out a Ca treatment, and Ca/S=1.0-3.0 and (% Ca)×(% S) 0.28?1.0×10?3, the optimizing the TMCP process, the finished steel plate has a microstructure which a duplex-phase structure of ferrite+uniformly and dispersedly distributed bainite and has an improved resistance to fatigue crack growth.
    Type: Grant
    Filed: November 4, 2015
    Date of Patent: February 16, 2021
    Assignee: Baoshan Iron & Steel Co., Ltd.
    Inventors: Zicheng Liu, Qing Shi
  • Publication number: 20210032717
    Abstract: Disclosed is a high-strength high-toughness and wear-resistant composite steel plate, comprising a substrate layer and a composite layer of which a single side or double sides are composited on the substrate layer; the substrate layer is a carbon steel layer; the composite layer is a ultra-high manganese steel layer, and a content of Mn element in the composite layer is 16.00˜25.00 wt. %. Further disclosed is a manufacturing method for the high-strength high-toughness and wear-resistant composite steel plate, comprising: (1) making a substrate layer plate blank and a composite layer plate blank; (2) assembling; (3) heating: the heating temperature is 1150˜1250° C. and the heat preservation is performed for 1˜3 hours; (4) composite rolling: the starting rolling temperature is 1120˜1220° C.; the finishing rolling temperature is 1050˜1200° C.; and the reduction rate is controlled to be more than or equal to 50%; and (5) cooling after rolling.
    Type: Application
    Filed: November 21, 2018
    Publication date: February 4, 2021
    Applicant: BAOSHAN IRON & STEEL CO., LTD.
    Inventors: Hongbin LI, Xiangqian YUAN, Sihai JIAO, Liandeng YAO, Xiaojun LIANG
  • Publication number: 20210016346
    Abstract: Disclosed is a flow-controllable tundish structure capable of filtering inclusions in molten steel. The tundish structure comprises a tundish (1), the tundish being divided into three separated cavities which comprise an impact zone cavity (1a) in the middle and pouring zone cavities (1b) at two sides thereof. A long nozzle (2) for pouring is vertically arranged in the center of the impact zone cavity, and molten steel flows down out of the long nozzle for pouring and is injected into the impact zone cavity; and a turbulence suppressor (3) directly facing the long nozzle for pouring is arranged on the cavity bottom under the long nozzle for pouring, and the molten steel flowing down out of the long nozzle for pouring impacts on the turbulence suppressor and is then buffered and mixed.
    Type: Application
    Filed: February 28, 2019
    Publication date: January 21, 2021
    Applicant: BAOSHAN IRON & STEEL CO., LTD.
    Inventors: Xufeng LIU, Zhengjie FAN, Jianjun ZHI, Hongguang ZHENG
  • Patent number: 10894388
    Abstract: There is disclosed in the disclosure a protective steel plate with excellent cold roll formability, comprising: three soft steel layers (1, 4, 5) and two hard steel layers (2, 3), wherein the three soft steel layers (1, 4, 5) and the two hard steel layers (2, 3) are positioned alternately, and face layers of the protective steel plate are soft steel layers (1, 4, 5), wherein the hard steel layers (2, 3) and the soft steel layers (1, 4, 5) are atomically bonded by rolling cladding; wherein the soft steel layers (1, 4, 5) comprise chemical elements in percentage by mass of: C: 0.001-0.01%, 0<Si?0.005%, Mn: 0.05-0.15%, 0<Al?0.005%, Ti: 0.01-0.10%, with a balance of Fe and other unavoidable impurities.
    Type: Grant
    Filed: April 26, 2017
    Date of Patent: January 19, 2021
    Assignee: Baoshan Iron & Steel Co., Ltd.
    Inventors: Fengming Song, Xiaoping Hu, Donghui Wen
  • Patent number: 10889874
    Abstract: A thick steel plate for high heat input welding and having great heat-affected area toughness and a manufacturing method therefor, comprising the steps of smelting, casting, rolling, and cooling. Chemical composition is properly controlled for the steel plate and satisfies 1?Ti/N?6 and Mg/Ti>0.017, where effective S content in steel=S?1.3 Mg?0.8 Ca?0.34 REM?0.35 Zr, and effective S content in steel: 0.0003-0.003%; finely dispersed inclusions may be formed in the steel plate, and the amount of composite inclusion MgO+Ti2O3+MnS in the steel plate is controlled at a proportion greater than or equal to 5%. The tensile strength of a base material so acquired is ?510 MPa, insofar as welding input energy is 200-400 kJ/cm, the average Charpy impact work of the steel plate at ?40 ° C. is 100 J or more, at the same time, the average Charpy aging impact work of the base material of ½ thickness at ?40° C. is 46 J or more.
    Type: Grant
    Filed: December 8, 2016
    Date of Patent: January 12, 2021
    Assignee: Baoshan Iron & Steel Co., Ltd.
    Inventors: Jian Yang, Shan Gao, Zhigang Ma, Ruizhi Wang, Caiyi Zhang, Junkai Wang, Guodong Xu, Yunan Wang
  • Patent number: 10888907
    Abstract: A mixed jet descaling device axially and eccentrically arranged for the inner wall of a metal pipe comprises a support rod (1) arranged inside the metal pipe (100), the support rod being parallel to the central axis of the metal pipe, eccentrically arranged and not concentric with the central axis of the metal pipe; and at least two spray nozzle units (2, 2?, 2?) for spraying the mixed jet, the spray nozzle units being arranged from front to back along the length direction of the support rod. At least two mixed jet spray nozzles (21, 21?, 21?) are provided in each spray nozzle unit and uniformly arranged along the circumference of the support rod in such a manner that the mixed jet spray nozzles diverge towards periphery of the support rod with the axis of the support rod as the center.
    Type: Grant
    Filed: January 30, 2015
    Date of Patent: January 12, 2021
    Assignee: Baoshan Iron & Steel Co., Ltd.
    Inventor: Mingnan Duan
  • Patent number: 10882277
    Abstract: There is disclosed in the disclosure a protective clad steel plate, comprising hard steel layers (1, 3, 5) and soft steel layers (2, 4) arranged alternately, wherein face layers of the protective clad steel plate are hard steel layers (1, 3, 5), wherein the hard steel layers (1, 3, 5) and soft steel layers (2, 4) are atomically bonded by rolling cladding; wherein the soft steel layers (2, 4) comprise chemical elements in percentage by mass of: C: 0.001-0.01%, 0<Si?0.005%, Mn: 0.05-0.15%, 0<Al?0.005%, Ti: 0.01-0.10%, with a balance of Fe and unavoidable impurities.
    Type: Grant
    Filed: April 26, 2017
    Date of Patent: January 5, 2021
    Assignee: Baoshan Iron & Steel Co., Ltd.d
    Inventors: Fengming Song, Donghui Wen, Xiaoping Hu
  • Patent number: 10875064
    Abstract: A rolling mill (1) which is suitable for performing hot stalling rolling includes: a housing (2); a first roller (9) mountable to the housing (2); a second roller (10) mountable to the housing (2), wherein the position of the second roller (10) relative to the housing (2) is adjustable, thereby adjusting the width of a roll gap (17) between the first roller (9) and the second roller (10), and wherein the roll gap (17) is configured to deform a workpiece (18) when the workpiece (18) is passed therethrough. The rolling mill provides the advantage of optimizing the rolling process.
    Type: Grant
    Filed: July 7, 2015
    Date of Patent: December 29, 2020
    Assignee: Baoshan Iron & Steel Co., Ltd.
    Inventors: Zhengyi Jiang, Xiawei Cheng, Jingwei Zhao, Bob de Jong, Laizhu Jiang, Suzhen Luo, Jianguo Peng, Ming Luo, Li Ma
  • Patent number: 10870905
    Abstract: A die-casting magnesium alloy. The die-casting magnesium alloy comprises, by mass percent, 1% to 5% of La, 0.5% to 3% of Zn, 0.1% to 2% of Ca, 0.1% to 1% of Mn and the balance Mg and other inevitable impurities. The die-casting magnesium alloy manufacturing method comprises smelting, refinement and die-casting. The die-casting magnesium alloy has good mechanical performance, die-casting performance and heat conduction performance.
    Type: Grant
    Filed: December 6, 2016
    Date of Patent: December 22, 2020
    Assignee: Baoshan Iron & Steel Co., Ltd.
    Inventors: Shiwei Xu, Jichun Dai, Weineng Tang, Changlong Zhuo, Haomin Jiang, Pijun Zhang
  • Publication number: 20200391481
    Abstract: Laminated steel having a low interface bubble rate, comprising: a substrate with a surface roughness of 0.15-0.25 ?m and a modified flexible polyester film thermally laminated onto the surface of the substrate. The modified flexible polyester film is obtained by copolymerization modification of ethylene terephthalate with a low-molecular-weight aliphatic polyester. A method for manufacturing the laminated steel having an extremely low interface bubble rate, comprising the steps of: (1) preheating and then heating the substrate; (2) uncoiling the modified flexible polyester film at room temperature, and then thermally laminating same onto the substrate; and (3) cooling and squeeze-drying.
    Type: Application
    Filed: December 10, 2018
    Publication date: December 17, 2020
    Applicant: BAOSHAN IRON & STEEL CO., LTD.
    Inventors: Zhangwei WANG, Junsheng WEI, Long XIE, Hongxing CHEN
  • Patent number: 10865458
    Abstract: A bulletproof steel plate with a tensile strength of 2000 MPa grade and a Brinell Hardness of 600 grade and a manufacturing method thereof, characterized by that the chemical elements in mass percentage thereof being: 0.35-0.45% of C, 0.80-1.60% of Si, 0.3-1.0% of Mn, 0.02-0.06% of Al, 0.3-1.2% of Ni, 0.30-1.00% of Cr, 0.20-0.80% of Mo, 0.20-0.60% of Cu, 0.01-0.05% of Ti, 0.001-0.003% of B, and the balance being Fe and inevitable impurities. The tensile strength of the steel plate can reach a grade of 2000 MPa and its Brinell Hardness can reach a grade of 600.
    Type: Grant
    Filed: August 25, 2016
    Date of Patent: December 15, 2020
    Assignee: Baoshan Iron & Steel Co., Ltd.
    Inventors: Xiaoting Zhao, Fengbin Li, Liandeng Yai, Hongbin Li
  • Patent number: 10850353
    Abstract: The present invention provides a system for enabling synchronous sheet transfer to follow laser cutting dynamically. A laser-cutting method for the system for enabling synchronous sheet transfer to follow laser cutting dynamically is also provided. With the system and method of the present invention, dynamic following of sets of magnetic belts during the cutting procedure is implemented, thereby accelerating the processing pace, and further improving the throughput.
    Type: Grant
    Filed: March 29, 2016
    Date of Patent: December 1, 2020
    Assignee: Baoshan Iron & Steel Co., Ltd.
    Inventors: Ruimin Wu, Saidan Yang, Zhaodong Liang, Ye Ding
  • Patent number: 10851435
    Abstract: A dual-hardness clad steel plate. One surface of the steel plate is a high-hardness layer, the other surface of the steel plate is a low-hardness layer, and a combination of atoms is achieved between the high-hardness layer and the low-hardness layer by rolling bonding, wherein Mn13 steel is adopted for the low-hardness layer, and the Brinell hardness of the high-hardness layer is greater than 600. Further disclosed is a production method of the dual-hardness clad steel plate, comprising: 1) respectively preparing a high-hardness layer slab and a low-hardness layer slab; 2) assembling: preprocessing combined faces of the slabs, carrying out peripheral welded sealing on joint faces of the slabs, and carrying out vacuumizing treatment on a composite slab after welded sealing; 3) heating; 4) carrying out composite rolling; 5) cooling; and 6) carrying out thermal treatment, wherein the heating temperature is 1050-1100° C.
    Type: Grant
    Filed: December 14, 2016
    Date of Patent: December 1, 2020
    Assignee: Baoshan Iron & Steel Co., Ltd.
    Inventors: Xiaoting Zhao, Bao Yan, Liandeng Yao, Sihai Jiao, Hongbin Li
  • Patent number: 10851432
    Abstract: The present invention discloses an ultra-high strength and ultra-high toughness casing steel, having a microstructure of tempered sorbite, and the content of chemical elements by mass percent thereof being as follows: C: 0.1-0.22%, Si: 0.1-0.4%, Mn: 0.5-1.5%, Cr: 1-1.5%, Mo: 1-1.5%, Nb: 0.01-0.04%, V: 0.2-0.3%, Al: 0.01-0.05%, Ca: 0.0005-0.005%, the balance being Fe and unavoidable impurities. Correspondingly, the invention also discloses a casing obtained by processing the ultra-high strength and ultra-high toughness casing steel and a manufacturing method thereof. The ultra-high strength and ultra-toughness casing steel and the casing of the present invention have a strength of 155 ksi or more and an impact toughness greater than 10% of its yield strength value, thereby realizing a combination of ultra-high strength and ultra-high toughness.
    Type: Grant
    Filed: June 17, 2016
    Date of Patent: December 1, 2020
    Assignee: BAOSHAN IRON & STEEL CO., LTD.
    Inventors: Xiaoming Dong, Zhonghua Zhang, Xiaodong Jin
  • Patent number: 10844451
    Abstract: Disclosed is a non-oriented electrical steel plate having a good surface state, a high magnetic induction and a low iron loss, the contents of various chemical elements of the non-oriented electrical steel plate in mass percentage being: 0<C?0.004%, 0.1%?Si?1.6%, 0.1%?Mn?0.8%, 0.1%?Al?0.6%, Ti?0.0015%, and the balance being Fe and other inevitable impurities, with 0.2%?(Si+Al)?2.0% being met. Also disclosed is a method for manufacturing the above-mentioned steel plate, comprising the steps: a liquid iron pretreatment, smelting with a converter, RH refining, casting into slabs, hot rolling, acid pickling, cold rolling, annealing and coating. The non-oriented electrical steel plate of the present invention has an excellent magnetic property, an ultralow iron loss and a higher steel purity; in addition the surface quality of the steel plate is good and the production cost is low.
    Type: Grant
    Filed: December 8, 2015
    Date of Patent: November 24, 2020
    Assignee: Baoshan Iron & Steel Co., Ltd.
    Inventors: Feng Zhang, Bo Wang, Yanli Song, Xuejun Lv, Aihua Ma, Changguo Huang