Patents Assigned to Baoshan Iron & Steel Co., Ltd.
  • 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
  • Patent number: 10837089
    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. Also, the chemical composition of the steel plate satisfies 1?Ti/N?6 and (Ca+REM+Zr)/Al?0.11, where the effective S content in steel=S-0.8Ca-0.34REM-0.35Zr. and the effective S content in steel: 0.0006-0.005%; finely dispersed inclusions may be formed, and the amount of composite inclusion CaO+Al2O3+MnS+TiN in the steel plate is at a proportion of ?12%. With respect to welding in which the thickness of the steel plate is 50-70 mm, the tensile strength of a base material is ?510 MPa. and welding input energy is 200-400 kJ/cm, the average Charpy impact work of a welding heat-affected area of the steel plate at ?40° C. is 100 J or more, and 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: November 17, 2020
    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: 10835997
    Abstract: Provided is a superhigh strength gas shielded welding wire containing V, the mass percentage contents of the chemical elements thereof being: 0.08-0.12% of C, 0.65-0.80% of Si, 1.80-1.95% of Mn, 0<Cu?0.25%, 0.20-0.40% of Cr, 0.2-0.6% of Mo, 1.30-1.80% of Ni, 0.08-0.20% of Ti, 0.01-0.05% of V, 0.0070-0.0130% of N, and the balance of Fe and other inevitable impurities. Also provided is a method for manufacturing the welding wire. A weld metal obtained after welding with said welding wire has a higher strength and toughness, and also has a good crack resistance, weldability and plasticity.
    Type: Grant
    Filed: June 30, 2015
    Date of Patent: November 17, 2020
    Assignee: Baoshan Iron & Steel Co., Ltd.
    Inventors: Zhaoxia Qu, Lei Xu, Liqian Xia
  • Patent number: 10814279
    Abstract: A hydrogel composite draw material for forward osmosis comprising: a porous elastic polymeric foam element including a three-dimensional continuous network of pores interpenetrated with a polymer hydrogel. In use, the hydrogel composite draw material draws a water flux of at least 3.5 L/m2h.
    Type: Grant
    Filed: September 15, 2015
    Date of Patent: October 27, 2020
    Assignee: Baoshan Iron & Steel Co., Ltd.
    Inventors: Jing Wei, Ze-Xian Low, Huanting Wang, George Simon
  • Publication number: 20200325568
    Abstract: Low-density hot dip galvanized steel, comprising a steel substrate (1) located at a core portion and a coating layer (3) located on the surface. An interface layer is disposed between the steel substrate (1) and the coating layer (3), the interface layer comprises an iron particle layer (4), iron particles dispersed on the steel substrate (1) and covering the steel substrate (1) are disposed in the iron particle layer (4), and the iron particles are covered by a first inhibition layer (5). The low-density hot dip galvanized steel contains element Al in a mass percentage of 3.0% to 7.0%. Correspondingly, the present invention also comprises a manufacturing method for the low-density hot dip galvanized steel. The low-density hot dip galvanized steel has a low density, a high strength and high galvanizability and coating layer adhesion.
    Type: Application
    Filed: June 14, 2017
    Publication date: October 15, 2020
    Applicant: BAOSHAN IRON & STEEL CO., LTD.
    Inventors: Xinyan JIN, Qi YANG, Li WANG, Guangkui HU
  • Patent number: 10801090
    Abstract: The invention discloses an ultra-high obdurability steel plate having a low yield ratio, comprising the chemical elements in mass percentages of: C: 0.18-0.34%, Si: 0.10-0.40%, Mn: 0.50-1.40%, Cr: 0.20-0.70%, Mo: 0.30-0.90%, Nb: 0-0.06%, Ni: 0.50-2.40%, V: 0-0.06%, Ti: 0.002-0.04%, Al: 0.01-0.08%, B: 0.0006-0.0020%, N?0.0060%, O?0.0040%, Ca: 0-0.0045%, and the balance of Fe and other unavoidable impurities. The invention also discloses a process of manufacturing the steel plate, wherein the heating temperature is 1080-1250° C.; the quenching temperature is 860-940° C.; and the tempering temperature is 150-350° C.
    Type: Grant
    Filed: December 24, 2013
    Date of Patent: October 13, 2020
    Assignee: Baoshan Iron & Steel Co., Ltd.
    Inventors: Sixin Zhao, Hongsheng Jiang, Liandeng Yao
  • Publication number: 20200318224
    Abstract: A high-strength high-elongation tinned primary plate and a double cold reduction method therefor. The tinned primary plate comprises the following components by weight from 0.065 to 0.12% of carbon, from 0.2 to 0.8% of manganese, from 0.003 to 0.015% of nitrogen, the remainder being iron and the inevitable trace impurities. The tinned primary plate is necessarily subjected to double cold reduction at a reduction of 5˜13% and a rolling tension of 50˜100 MPa. The tinned primary plate has a yield strength of Rp0.2?520 MPa, and percentage elongations in rolling direction RD, 45° direction and perpendicular direction TD, which are all greater than or equal to 10% after bake-hardening.
    Type: Application
    Filed: May 26, 2017
    Publication date: October 8, 2020
    Applicant: BAOSHAN IRON & STEEL CO., LTD.
    Inventors: Fuliang LIAN, Bijun BAN, Gaofei LIANG
  • Publication number: 20200308065
    Abstract: Provided are a Kanbara Reactor (KR) desulfurization stirring paddle casting material and a preparation method therefor. The casting material consists of a base material and an additive; the base material consists of the following raw materials in weight percentages: M70 sintered mullite 60-80%, flint clay 5-20%, fine powder 5-20%, and pure calcium aluminate cement 1-5%. The percentages of each component of the additive based on the weight of the base material are as follows: water reducing agent 0.05-0.2%, and heat-resistant stainless steel fiber 1-5%. The main raw materials are M70 sintered mullite and a small amount of flint clay so as to ensure good thermal shock resistance; the medium temperature and high temperature strength are controlled at 100-180 MPa so as to ensure good erosion resistance; the content of Al2O3 in the casting material is 60-70% so as to ensure good corrosion resistance; the ratio of high temperature strength to medium temperature strength is controlled at 1-1.
    Type: Application
    Filed: September 7, 2018
    Publication date: October 1, 2020
    Applicant: BAOSHAN IRON & STEEL CO., LTD.
    Inventors: Jingfu YAO, Feifang GAN, Jining MOU, Tao WANG
  • Publication number: 20200291501
    Abstract: An apparatus and a method for rapidly heating cold-rolled strip steel (10). The apparatus for rapidly heating cold-rolled strip steel (10) comprises a heating zone, a soaking zone, and a cooling zone, and the heating zone is sequentially divided into a first heating section (1), a second heating section (2), a third heating section (3), and a fourth heating section (4) along a moving direction of the strip steel (10) to be heated, the first heating section (1) and the fourth heating section (4) being radiant heating sections, and the second heating section (2) and the third heating section (3) being inductive heating sections. The method for rapidly heating cold-rolled strip steel (10) uses the apparatus for rapidly heating cold-rolled strip steel (10) to heat the strip steel (10).
    Type: Application
    Filed: May 16, 2018
    Publication date: September 17, 2020
    Applicant: BAOSHAN IRON & STEEL CO., LTD.
    Inventors: Huabing ZHANG, Guobao LI, Baojun LIU, Dan HAN, Xinqiang ZHANG, Guanghua CUI, Jianbing CHEN, Wen XIAO, Zipeng ZHAO
  • Patent number: 10760149
    Abstract: The invention provides a highly corrosion-resistant, high strength, Al-containing weathering steel plate, wherein the chemical composition comprises in weight percentages (wt %) of: C: 0.02-0.07%, Si: 0.2-1.0%, Mn: 0.2-2.2%, P?0.01%, S?0.006%, Cu: 0.2-0.5%, Cr: 0.5-3.5%, Ni: 0.2-1.2%, Al: 0.4-4.0%, N?0.005%; selectively added one or more of Nb: 0.01-0.06%, Ti: 0.01-0.10%, V: 0.02-0.10%; the balance of Fe and unavoidable impurities, wherein Al/Cr is 0.5-8.0. The steel plate has a yield strength of 350-500 MPa, an elongation of 20% or more, a relative corrosion rate of 27% or less and a good impact toughness and a low yield ratio. The present application also provides a method for manufacturing the weathering steel plate.
    Type: Grant
    Filed: December 24, 2013
    Date of Patent: September 1, 2020
    Assignee: Baoshan Iron & Steel Co., Ltd.
    Inventors: Fengming Song, Donghui Wen, Zigang Li, Xiaoping Hu, Ana Yang, Jianye Li
  • Patent number: 10759003
    Abstract: Provided are a method and a system for enabling magnetic belts to follow laser-cutting dynamically to achieve flexible designs and facilitating processing.
    Type: Grant
    Filed: March 29, 2016
    Date of Patent: September 1, 2020
    Assignee: Baoshan Iron & Steel Co., Ltd.
    Inventors: Saidan Yang, Ruimin Wu, Junliang Qiao, Ye Ding
  • Publication number: 20200270714
    Abstract: There is disclosed a softening method for a high-strength Q & P steel hot-rolled coil, comprising: after heating a Q & P steel ingot, subjecting it to rough rolling, finish rolling, laminar cooling and coiling to obtain a hot-rolled coil; after unloading the coil, covering the coil on-line with an insulating enclosure and moving it into a steel coil warehouse along with a transport chain; after a specified period of insulating time, removing the coil from the insulating enclosure, and cooling it to room temperature in air, wherein the coiling is performed at a temperature of 400-600 ° C.; said covering on-line with an insulating enclosure means each hot-rolled coil is individually covered with an independent, closed insulating enclosure unit within 60 minutes after unloading; the insulating time of the steel coil in the insulating enclosure is ?60 minutes. The inventive method replaces the intermediate annealing step in the production process of cold-rolled Q & P steel.
    Type: Application
    Filed: September 20, 2018
    Publication date: August 27, 2020
    Applicants: BAOSTEEL ZHANJIANG IRON & STEEL CO., LTD, BAOSHAN IRON & STEEL CO., LTD.
    Inventors: Xingjian GAO, Jiachun XU, Ye WANG
  • Publication number: 20200269297
    Abstract: The present invention provides magnesium or magnesium alloys having high formability at room temperature, the magnesium or magnesium alloys having a grain size ?2 microns. The present invention also provides a method for manufacturing the magnesium or magnesium alloys having high formability at room temperature. The magnesium or magnesium alloys having high formability at room temperature are prepared by simple processing means. The present invention overcomes a problem of poor formability at room temperature.
    Type: Application
    Filed: September 21, 2018
    Publication date: August 27, 2020
    Applicants: BAOSHAN IRON & STEEL CO., LTD., China Baowu Steel Group Corporation Limited
    Inventors: Jianfeng NIE, Zhuoran ZENG, Shiwei XU, Nick BIRBILIS, Christopher H.J. DAVIES, Weineng TANG
  • Patent number: 10745785
    Abstract: A high-performance low-alloy wear-resistant steel sheet and a method of manufacturing the same, which has the chemical compositions (wt %): C: 0.21-0.32%; Si: 0.10-0.50%; Mn: 0.60-1.60%; 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 26, 2014
    Date of Patent: August 18, 2020
    Assignee: Baoshan Iron & Steel Co., Ltd.
    Inventors: Hongbin Li, Liandeng Yao, Xiaobo Wang
  • Publication number: 20200255915
    Abstract: Disclosed are a high-strength multiphase steel tinned raw plate and a manufacturing method therefor, wherein the mass percentages of the components of the multiphase steel tinned raw plate are: 0.081%-0.14% of C, 0.2%-0.8% of Mn, 0.01%-0.09% of Al, 0.01%-0.03% of P, 0.002%-0.015% of N, also containing one or more than one of 0.001%-0.005% of B, 0.005%-0.05% of Cr, 0.001%-0.1% of Ti, 0.001%-0.2% of Nb, 0.005%-0.03% of Cu, 0.001%-0.008% of Mo, and the balance of Fe and other inevitable impurities; and satisfy: 0.21% <Mn+1.3 Cr+3.2 Mo+0.5 Cu <0.91%. The tinned raw plate has a structure comprising ferrite grains, pearlite, martensite and cementite particles, wherein the total volume fraction of the pearlite, martensite and cementite particles is 5%-20%, the volume fraction of the martensite is 1%-5%, and the martensite has a solid solution content of carbon of ?0.07%.
    Type: Application
    Filed: August 28, 2018
    Publication date: August 13, 2020
    Applicant: BAOSHAN IRON & STEEL CO., LTD.
    Inventors: Fuliang LIAN, Gaofei LIANG, Hongxing CHEN, Shunli ZHAO, Bijun BAN, Xiujun LI, Gang XU
  • Publication number: 20200255917
    Abstract: Steel for coiled tubing with a low yield ratio and ultra-high strength and a preparation method thereof, wherein the chemical composition of the steel in mass percentage is: C: 0.05-0.16%, Si: 0.1-0.9%, Mn: 1.25-2.5%, P?0.015%, S?0.005%, Cr: 0.51-1.30%, Nb: 0.005-0.019%, V: 0.010-0.079%, Ti: 0.01-0.03%, Mo: 0.10-0.55%, Cu: 0.31-0.60%, Ni: 0.31-0.60%, Ca: 0.0010-0.0040%, Al: 0.01-0.05%, N?0.008%, and the rest being Fe and inevitable impurity elements. The chemical composition combines the technologies of low temperature finishing rolling and low temperature coiling to obtain an MA constituent+bainite+ferrite multiphase structure. The steel has a low yield ratio and ultra-high strength with the following specific properties: yield strength?620 MPa, tensile strength?750 MPa, elongation?11%, and yield ratio?0.83, and is suitable for manufacturing coiled tubing with ultra-high strength having a grade of 110 ksi or higher.
    Type: Application
    Filed: October 25, 2018
    Publication date: August 13, 2020
    Applicant: BAOSHAN IRON & STEEL CO., LTD.
    Inventors: Chuanguo ZHANG, Leilei SUN, Lei ZHENG, Houjun PANG, Jian LIU, Yong ZHANG, Guodong XU
  • Publication number: 20200232054
    Abstract: There is provided a production method for on-line improving precipitation strengthening effect of Ti microalloyed hot-rolled high-strength steel, comprising: casting a molten steel with microalloying element Ti added to obtain an ingot; after heating the ingot, subjecting it to rough rolling, finish rolling, laminar cooling and coiling to obtain a hot-rolled coil; after unloading the coil, covering the coil on-line with an insulating enclosure and moving it into a steel coil warehouse along with a transport chain; after a specified period of on-line insulating time, removing the coil from the insulating enclosure, and cooling it to room temperature in air, wherein the microalloying element Ti has a content of ?0.03 wt %; the coiling is performed at a temperature of 500-700° C.; said covering on-line with an insulating enclosure means each hot-rolled coil is individually covered with an independent, closed insulating enclosure unit within 60 minutes after unloading; the on-line insulating time is ?60 minutes.
    Type: Application
    Filed: September 20, 2018
    Publication date: July 23, 2020
    Applicants: BAOSTEEL ZHANJIANG IRON & STEEL CO., LTD, BAOSHAN IRON & STEEL CO., LTD.
    Inventors: Xingjian GAO, Jiachun XU, Ye WANG
  • Publication number: 20200216927
    Abstract: A hot dipped high manganese steel and a manufacturing method therefor. The high manganese steel comprises a steel base plate and a coating on the surface of the steel base plate. The core of the steel base plate is austenite. The surface layer of the steel base plate is a ferrite fine grain layer. The ferrite fine grain layer comprises an oxide of Al. Furthermore, the steel base plate of the hot dipped high manganese steel comprises, in mass percentages, 10 to 30% of Mn element, 1 to 2% of Al element, and 0.4 to 0.8% of C element. The manufacturing method comprises: 1) manufacturing strip steel; 2) primary annealing and acid washing; 3) secondary annealing and hot dipping.
    Type: Application
    Filed: April 20, 2018
    Publication date: July 9, 2020
    Applicant: BAOSHAN IRON & STEEL CO., LTD.
    Inventors: Xinyan JIN, Yong ZHONG, Guangkui HU
  • Patent number: 10697040
    Abstract: A continuous annealing method for low coercive force cold-rolled electromagnetic pure iron plate and strip. Control parameters of each stages in a continuous annealing process are as follows: 750-850° C. at a heating stage; 750-850° C. at a soaking stage, the soaking time is 100-150 s; an outlet temperature of 575-675° C. at a slow-cooling stage, the cooling speed in slow-cooling stage is 2.5-10° C./s; an outlet temperature of 380-420° C. at a fast-cooling stage, the cooling speed of the fast-cooling stage is 15-25° C./s; and 270-310° C. at an overaging stage. The annealing medium is a non-oxidizing atmosphere composed of H2 and N2. After annealing, the cold-rolled electromagnetic pure iron plate and strip is leveled and pressed such that the leveling elongation rate of the plate and strip is controlled within the range of 0.2±0.1%.
    Type: Grant
    Filed: September 1, 2016
    Date of Patent: June 30, 2020
    Assignee: BAOSHAN IRON & STEEL CO., LTD.
    Inventors: Yuanyuan Yan, Gaofei Liang, Guoping Cheng, Changqing Lin
  • Patent number: 10683561
    Abstract: Method for directly producing a pickling-free hot-plated sheet strip product from molten steel comprising: obtaining a refined molten steel; thin strip continuous casting: a mixed gas of an inert gas and a reducing gas is used for protection in the billet casting process; hot rolling: the cast strip is levelled at a high temperature so as to improve the sheet shape and rolled to a suitable thickness so as to change the product specification, or provide a mechanical disruption action on the iron oxide skin on the surface of the cast strip; reduction annealing: a sectional reduction method is used to perform sectional reductions with the temperature held within two ranges, i.e., 450-600° C. and 700-1000° C., wherein the reduction is performed within a range of 450-600° C. for 1-5 minutes and within a range of 700-1000° C.
    Type: Grant
    Filed: December 23, 2014
    Date of Patent: June 16, 2020
    Assignee: Baoshan Iron & Steel Co., Ltd.
    Inventors: Jun Li, Ning Tan, Chuang Guan, Yuan Fang, Xinjian Ma