Patents Assigned to Baoshan Iron & Steel Co., Ltd.
  • Publication number: 20200181727
    Abstract: A non-oriented electrical steel having excellent magnetic properties, the chemical elements thereof in percentage by mass being: Si: 0.2-1.5%, Mn: 0.01-0.30%, Al: 0.001-0.009%, O: 0.005-0.02%, C?0.005%, S?0.005%, N?0.005%, and Ti?0.002%, the remainder being Fe and other unavoidable impurities, and Al/Si?0.006 and Mn/Si?0.2. The method for producing comprises the following sequence of steps: (1) smelting; (2) hot rolling: the slab heating temperature being 850° C. to 1250° C., and the final rolling temperature being 800-1050° C.; (3) acid pickling; (4) cold rolling; (5) annealing: the annealing plate temperature being controlled between 620° C.-900° C.; and (6) coating.
    Type: Application
    Filed: October 26, 2017
    Publication date: June 11, 2020
    Applicant: BAOSHAN IRON & STEEL CO., LTD.
    Inventors: Xuejun LV, Feng ZHANG, Zhenyu ZONG, Yanli SONG, Lingyun CHEN, Bo WANG, Shishu XIE
  • Patent number: 10662348
    Abstract: Disclosed is an aluminium-zinc hot-plated steel plate having excellent weather resistance, corrosion resistance and alkali resistance, and an environmental-friendly surface treating agent therefor, wherein after the surface treatment of the aluminium-zinc hot-plated steel plate using an environmental-friendly surface treating agent consisting of the components of a matrix resin compounded from a particular solvent-free aqueous aliphatic polyurethane dispersion and aqueous polyurethane-acrylic acid copolymer, an organic silicon compound, a matrix resin curing agent, a water-soluble metal salt compound and a high-density polyethylene lubrication auxiliary etc., the formed surface-treated aluminium-zinc hot-plated steel plate has comprehensive properties of excellent weather resistance, corrosion resistance and alkali resistance, and good machine formability etc.
    Type: Grant
    Filed: March 26, 2014
    Date of Patent: May 26, 2020
    Assignee: Baoshan Iron & Steel Co., Ltd.
    Inventors: Yuan Ma, Yuling Ren, Yigang Dai, Jianping Zhang, Lan Zhu
  • Publication number: 20200157671
    Abstract: A hot dipped medium manganese steel and a manufacturing method therefor. The medium manganese steel comprises a steel base plate and a coating on the surface of the steel base plate; the mass percentages of the components in the hot dipped medium manganese steel are: C: 0.1 to 0.3%, Si: 0.1 to 2.0%, Mn: 5 to 12%, Al: 1 to 2%, P?0.02%, S?0.02%, N?0.005%, and the remaining being Fe and unavoidable impurities; the core structure is ferrite and austenite, and the surface layer of the steel base plate is a ferrite layer.
    Type: Application
    Filed: April 20, 2018
    Publication date: May 21, 2020
    Applicant: BAOSHAN IRON & STEEL CO., LTD.
    Inventors: Xinyan JIN, Yulong ZHANG, Guangkui HU
  • Patent number: 10610914
    Abstract: Disclosed is a rolling method for a board having various longitudinal thicknesses, comprising the following steps: 1) setting a number N of uniform-thickness segments of a sample, thicknesses h1, h2, . . . , hN of the uniform-thickness segments, lengths L1, L2, . . . , LN of the uniform-thickness segments, and lengths T1, T2, . . .
    Type: Grant
    Filed: March 29, 2016
    Date of Patent: April 7, 2020
    Assignee: Baoshan Iron & Steel Co., Ltd.
    Inventors: Chunwei Zhang, Shanqing Li, Zhenglian Jiang, Fei Xiong
  • Publication number: 20200095650
    Abstract: A free-cutting and non-quenched and tempered steel, comprising the following chemical elements by mass percentages: C: 0.35-0.45%, Si: 0.45-0.0.65%, Mn: 1.35-1.65%, S: 0.025-0.065%, V: 0.07-0.15%, Ti: 0.01-0.018%, N: 0.012-0.017%, Al: 0.015-0.035%, Ca: 0.0008-0.0025%, with the remaining being iron and other unavoidable impurities, wherein the S and Ca elements satisfy the relationship S/Ca=20-60. A manufacturing method of the free-cutting and non-quenched and tempered steel, comprising the following steps: (1) smelting and refining; (2) casting; (3) rolling; (4) forging; and (5) two-stage cooling.
    Type: Application
    Filed: June 11, 2018
    Publication date: March 26, 2020
    Applicant: BAOSHAN IRON & STEEL CO., LTD.
    Inventors: Dajiang YU, Xijun JIANG, Zongze HUANG, Rui HUANG
  • Patent number: 10570490
    Abstract: A method of strengthening a dilute magnesium alloy sheet includes providing a dilute magnesium alloy sheet, which includes a magnesium alloy consisting essentially of (wt %): >0 to 3.0 of Zn; >0 to 1.5 of Ca; 0 to 1.0 of Zr; 0 to 1.3 of a rare earth element or mixture of the same; 0 to 0.3 of Sr; 0 to 0.7 of Al, the balance of Mg and other unavoidable impurities, wherein the total weight % of alloying elements is less than 3%; subjecting the dilute magnesium alloy sheet to plastic deformation, in which the tensile plastic strain should exceed 0.5%, but be less than 8% to form a pre-deformed magnesium alloy sheets; and subjecting the pre-deformed magnesium alloy sheets to an ageing treatment in a temperature range of 80 to 250° C. for at least 1 minute, thereby forming a strengthened magnesium alloy sheet.
    Type: Grant
    Filed: April 8, 2015
    Date of Patent: February 25, 2020
    Assignee: Baoshan Iron & Steel Co., Ltd.
    Inventors: Jian-Feng Nie, Zhuoran Zeng, Mingzhe Bian, Christopher Huw John Davies, Nick Birbilis, Shiwei Xu, Pijun Zhang
  • Publication number: 20200058434
    Abstract: A laser-scribed grain-oriented silicon steel resistant to stress-relief annealing and a manufacturing method therefor. Parallel linear grooves (20) are formed on one or both sides of grain-oriented silicon steel (10) by laser etching. The linear grooves (20) are perpendicular to, or at an angle to, the rolling direction of the steel plate. A maximum height of edge protrusions of the linear grooves (20) does not exceed 5 ?m, and a maximum height of spatters in etch-free regions between adjacent linear grooves (20) does not exceed 5 ?m, and the proportion of an area occupied by spatters in the vicinity of the linear grooves (20) does not exceed 5%. The steel has low manufacturing costs, and the etching effect of the finished steel is retained during a stress-relief annealing process. The steel is suitable for manufacturing of wound iron core transformers.
    Type: Application
    Filed: January 24, 2018
    Publication date: February 20, 2020
    Applicant: BAOSHAN IRON & STEEL CO., LTD.
    Inventors: Zipeng ZHAO, Guobao LI, Yongjie YANG, Meihong WU, Changsong MA, Yaming JI, Chen LING, Weiyong XIE, Jianguo GUO
  • Patent number: 10566119
    Abstract: The invention discloses an oriented silicon steel with excellent magnetic properties and a manufacturing method thereof. The present invention obtains the oriented silicon steel with excellent magnetic properties by controlling the area ratio of small crystal grains of D<5 mm in an oriented silicon steel finished product to be not more than 3%, and controlling the ratio ?17/?15 of the magnetic conductivity under the magnetic induction of 1.7 T and 1.5 T in the oriented silicon steel finished product to be 0.50 or more.
    Type: Grant
    Filed: December 11, 2012
    Date of Patent: February 18, 2020
    Assignee: BAOSHAN IRON & STEEL CO., LTD.
    Inventors: Guohua Yang, Xiandong Liu, Guobao Li, Yongjie Yang, Zhuochao Hu, Hongxu Hei, Jun Zhang, Dejun Su, Huande Sun, Meihong Wu
  • Publication number: 20200038998
    Abstract: A steel welding component with an aluminum or aluminum alloy coating, using a steel welding blank with an aluminum or aluminum alloy coating. The welding blank is composed of a steel substrate (1) and coatings (2, 2?); the coating (2) comprises an intermetallic compound alloy layer (21) which contacts the substrate (1), and a metal alloy layer (22) on the intermetallic compound alloy layer (21); on at least one of the coating surfaces of the welding blank, the coating (2) within an area (3) to be welded of the welding blank has been totally removed, and an end face (23) of the coating (2) on the side of the coating within the area (3) to be welded removed has an angle of ? with a plane vertical to a surface (11) of the substrate (1) which is parallel to the welding seam, wherein ? is 0-80°. Also provided are welding and preparation methods for the steel welding component.
    Type: Application
    Filed: October 17, 2017
    Publication date: February 6, 2020
    Applicant: BAOSHAN IRON & STEEL CO., LTD.
    Inventors: Hua PAN, Yongchao SU, Ming LEI, Lei SHI, Haomin JIANG
  • Patent number: 10494706
    Abstract: A high-toughness low-alloy wear-resistant steel sheet and a method of manufacturing the same, which has the chemical compositions (wt %): C: 0.08-0.20%; Si: 0.10-0.60%; Mn: 1.00-2.00%; B: 0.0005-0.0040%; Cr: less than or equal to 1.50%; Mo: less than or equal to 0.80%; Ni: less than or equal to 1.50%; Nb: less than or equal to 0.080%; V: less than or equal to 0.080%; Ti: less than or equal to 0.060%; Al: 0.010-0.080%, Ca: 0.0010-0.0080%, N: less than or equal to 0.0080%, O: less than or equal to 0.0080%, H: less than or equal to 0.0004%, P: less than or equal to 0.015%, S: less than or equal to 0.010%, and (Cr/5+Mn/6+50B): more than or equal to 0.20% and less than or equal to 0.55%; (Mo/3+Ni/5+2Nb): more than or equal to 0.02% and less than or equal to 0.45%; (Al+Ti): more than or equal to 0.01% and less than or equal to 0.13%, the remainders being Fe and unavoidable impurities.
    Type: Grant
    Filed: March 19, 2014
    Date of Patent: December 3, 2019
    Assignee: Baoshan Iron & Steel Co., Ltd.
    Inventors: Hongbin Li, Liandeng Yao, Yuchuan Miao, Kougen Wu
  • Patent number: 10493498
    Abstract: A method for arranging jet cleaning nozzles comprising: arranging multiple rows of nozzles in a parallel and uniform manner along a lengthwise direction of a metal plate strip; arranging the nozzles in each row at an equal interval; arraying adjacent rows of nozzles in a staggered manner along the widthwise direction of the metal plate strip so as to form a nozzle matrix; wherein each nozzle is perpendicular to a moving direction of the metal plate strip, and the perpendicular distance of each nozzle to a surface of the metal plate strip is the same. Through the method for arranging jet cleaning nozzles, nozzles can be flexibly controlled based on the change of the geometric relationship between nozzles, in order to implement efficient and continuous descaling on the surfaces of a metal plate strip with different width specifications and different requirements on the descaling speed.
    Type: Grant
    Filed: January 29, 2018
    Date of Patent: December 3, 2019
    Assignee: BAOSHAN IRON & STEEL CO., LTD.
    Inventors: Mingnan Duan, Shanqing Li
  • Publication number: 20190337032
    Abstract: A roll for rolling surface topography of a steel plate is disclosed. A plurality of raised textured points are arranged on a roll surface. The shape formed by a joint between each single textured point and the roll surface is circular or approximately circular. The circular shape has a diameter of 50˜150 ?m. Each single textured point has a raised height of 2˜12 ?m, and the overlap among adjacent textured points is lower than 10%. The quantity variance of the textured points per square millimeter of the roll surface is lower than 20%, and the coverage area ratio of the textured points in each square millimeter is 30˜90%. The method comprises performing surface treatment on a feed roll to control the surface roughness Ra of the roll to be smaller than 0.5 ?m; and performing layer-by-layer ablation on a surface material of the roll to form the textured points.
    Type: Application
    Filed: April 18, 2018
    Publication date: November 7, 2019
    Applicant: BAOSHAN IRON & STEEL CO., LTD.
    Inventors: Xiaoming CHEN, Shanqing LI, Kaifu YANG, Jizhe QUAN
  • Publication number: 20190316234
    Abstract: A high-strength and high-toughness tube for perforating gun, having a formulation of chemical elements in percentage by mass as follows: C: 0.15%-0.22%, Si: 0.1%-0.4%, Mn: 0.5%-1%, Cr: 0.3%-0.7%, Mo: 0.3%-0.7%, Nb: 0.01%-0.04%, V: 0.1%-0.2%, Ti: 0.02%-0.05%, B: 0.0015%-0.005%, Al: 0.01%-0.05%, Ca: 0.001%-0.004%, N?0.008%, and the balance of Fe and other inevitable impurities. Accordingly, further disclosed is a method for manufacturing a high-strength and high-toughness tube for perforating gun. The high-strength and high-toughness tube for perforating gun of the present invention has high strength, good toughness and uniform circumferential strength, and is suitable for application in the field of petroleum exploration and exploitation.
    Type: Application
    Filed: November 29, 2017
    Publication date: October 17, 2019
    Applicant: BAOSHAN IRON & STEEL CO., LTD.
    Inventors: Xiaoming DONG, Zhonghua ZHANG, Cunyao ZHAO
  • Publication number: 20190291176
    Abstract: A control method and apparatus for inhibiting slag entrapment in ladle (1) during continuous casting production. An optimal control model calculating unit (11) receives related signals and data sent by a ladle weight detector (4), a molten steel flow field detector (5), a slag detector (7), a sliding gate opening detector (9), and a process signal interface unit (10), performs calculation and analysis according to an optimal control model to obtain a corresponding optimal control strategy, and outputs the strategy to an electromagnetic brake (6) and a sliding gate controller (8) for slag entrapment inhibition control. Regarding the two processes where a vortex may be formed, by means of different optimal control strategies, which respectively inhibit or destroy the formation of a vortex, slag generation is postponed, and molten steel may flow out without bringing slag out, thereby reducing residual ladle steel and improving molten steel yield.
    Type: Application
    Filed: October 13, 2017
    Publication date: September 26, 2019
    Applicant: BAOSHAN IRON & STEEL CO., LTD.
    Inventors: Lifeng SHENTU, Jikang HU, Jiaqi XI
  • Patent number: 10415131
    Abstract: Disclosed are a system and method for controlling a thickness of a hot-dip galvanized coating on a strip material with a continuously varying thickness. The system of the present disclosure is capable to provide a zinc coating with a uniform thickness on a coiled starting material with a continuously varying thickness, and the method of the present disclosure provides a simplified process to achieve such objective.
    Type: Grant
    Filed: March 29, 2016
    Date of Patent: September 17, 2019
    Assignee: Baoshan Iron & Steel Co., Ltd.
    Inventors: Fei Xiong, Shanqing Li, Zhenglian Jiang, Jianghua Xu
  • Publication number: 20190271064
    Abstract: Provided are a 1500 MPa-grade steel with a high product of strength and elongation for vehicles and a manufacturing method thereof. The mass percentages of the chemical elements thereof are: 0.1-0.3% of C, 0.1-2.0% of Si, 7.5-12% of Mn, 0.01-2.0% of Al, and the balance of iron and other inevitable impurities. The microstructure of the steel with a high product of strength and elongation for vehicles is austenite+martensite+ferrite or austenite+martensite. The steel for vehicles can reach a grade of 1500 MPa, and has a product of strength and elongation of no less than 30 GPa %.
    Type: Application
    Filed: July 25, 2017
    Publication date: September 5, 2019
    Applicant: BAOSHAN IRON & STEEL CO., LTD.
    Inventors: Yulong ZHANG, Qihang HAN, Li WANG
  • Publication number: 20190256945
    Abstract: Provided is a cold-rolled high-strength steel having a tensile strength of not less than 1500 MPa and an excellent formability, the chemical elements thereof having the following mass percent ratios: 0.25%-0.40% of C, 1.50%-2.50% of Si, 2.0%-3.0% of Mn, 0.03%-0.06% of Al, P?0.02%, S?0.01%, N?0.01% and at least one of 0.1%-1.0% of Cr and 0.1%-0.5% of Mo, with the balance being Fe and other unavoidable impurities. The microstructure of the cold-rolled high-strength steel has 5%-20% of residual austenite and 70%-90% of martensite, and the carbon concentration ratio of the residual austenite to the martensite is greater than 3.5 and less than 15. The cold-rolled high-strength steel sheet has a high strength and an excellent formability through a rational ingredient design and microstructure control.
    Type: Application
    Filed: September 20, 2017
    Publication date: August 22, 2019
    Applicant: BAOSHAN IRON & STEEL CO., LTD.
    Inventors: Shu ZHOU, Yong ZHONG, Li WANG
  • Patent number: 10385414
    Abstract: An unoriented silicon steel having high magnetic conductivity and low iron loss at a working magnetic density of 1.0-1.5 T and method for manufacturing same. By proper deoxidation control in a RH refining and high-temperature treatment for a short time in a normalizing step, the method can reduce the amount of inclusions in the silicon steel and improve grain shape, so as to improve the magnetic conductivity and iron loss of the unoriented silicon steel at a magnetic density of 1.0-1.5 T.
    Type: Grant
    Filed: March 29, 2012
    Date of Patent: August 20, 2019
    Assignee: Baoshan Iron & Steel Co., Ltd.
    Inventors: Liang Zou, Bo Wang, Xiandong Liu, Aihua Ma, Shishu Xie, Hongxu Hei
  • Patent number: 10378073
    Abstract: A high-toughness hot-rolled high-strength steel with a yield strength of Grade 800 MPa with its chemical components, in weight percentages, being C 0.02-0.05%, Si?0.5%, Mn 1.5-2.5%, P?0.015%, S?0.005%, Al 0.02-0.10%, N?0.006%, Nb 0.01-0.05%, Ti 0.01-0.03%, 0.03%?Nb+Ti?0.06%, Cr 0.1%-0.5%, Mo 0.1-0.5%, B 0.0005-0.0025%, and the balance of Fe and unavoidable impurities, and a preparation method thereof. The present invention acquires, via direct quenching, an ultra-low carbon martensite structure with a yield strength of 800 Mpa and an impact energy of more than 100J under a temperature of ?80° C.
    Type: Grant
    Filed: January 15, 2015
    Date of Patent: August 13, 2019
    Assignee: Baoshan Iron & Steel Co., Ltd.
    Inventors: Huanrong Wang, A'na Yang, Wei Wang
  • Patent number: 10369624
    Abstract: A control method and apparatus for continuous casting steel pouring are provided, wherein the amount of the molten steel flow of the ladle is controlled, thereby improving the yield of the molten steel and decreasing the production cost.
    Type: Grant
    Filed: December 10, 2012
    Date of Patent: August 6, 2019
    Assignee: Baoshan Iron & Steel Co., LTD
    Inventors: Anxiang Tang, Lifeng Shentu, Jikang Hu, Dean Cao, Xingyu Wang, Chen Chen, Jianqing Yao, Xinghua Lu, Jinsong Chen, Aiping Feng, Xiaoguang Yu