Patents by Inventor Yongjie Yang

Yongjie Yang has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • 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
  • Publication number: 20210023659
    Abstract: A heat-resistant magnetic domain refined grain-oriented silicon steel, a single-sided surface or a double-sided surface of which has several parallel grooves which are formed in a grooving manner, each groove extends in the width direction of the heat-resistant magnetic domain refined grain-oriented silicon steel, and the several parallel grooves are uniformly distributed along the rolling direction of the heat-resistant magnetic domain refined grain-oriented silicon steel. Each groove which extends in the width direction of the heat-resistant magnetic domain refined grain-oriented silicon steel is formed by splicing several sub-grooves which extend in the width direction of the heat-resistant magnetic domain refined grain-oriented silicon steel.
    Type: Application
    Filed: June 20, 2018
    Publication date: January 28, 2021
    Inventors: Shuangjie CHU, Zipeng ZHAO, Yongjie YANG, Changsong MA, Meihong WU, Yaming JI, Aihua MA, Weiyong XIE, Hai LIU, Jianguo GUO
  • Publication number: 20200362433
    Abstract: Disclosed is a method for manufacturing stress-relief-annealing-resistant, low-iron-loss grain-oriented silicon steel, the method comprising: carrying out, by means of a pulse laser, scanning grooving on a single surface or two surfaces of a silicon steel sheet after cold rolling, or after decarburizing annealing, or after high temperature annealing or after hot stretching, temper rolling and annealing, and forming several grooves parallel with each other in a rolling direction of the silicon steel sheet, wherein a single pulse time width of the pulse laser is 100 ns or less, and a single pulse peak energy density is 0.
    Type: Application
    Filed: June 21, 2018
    Publication date: November 19, 2020
    Inventors: Shuangjie CHU, Guobao LI, Yongjie YANG, Zipeng ZHAO, Changsong MA, Kanyi SHEN, Meihong WU, Yaming JI, Huabing ZHANG, Zhuochao HU
  • 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
  • Patent number: 10236105
    Abstract: The invention relates to high magnetic induction oriented silicon steel and a preparation method thereof. The oriented silicon steel comprises the following chemical elements by weight percent: 0.035-0.120% of C, 2.9-4.5% of Si, 0.05-0.20% of Mn, 0.005-0.050% of P, 0.005-0.012% of S, 0.015-0.035% of Als, 0.001-0.010% of N, 0.05-0.30% of Cr, 0.005-0.090% of Sn, not more than 0.0100% of V, not more than 0.0100% of Ti, at least one of trace elements of Sb, Bi, Nb and Mo, and the balance of Fe and other inevitable impurities, wherein Sb+Bi+Nb+Mo is 0.0015-0.0250% and (Sb/121.8+Bi/209.0+Nb/92.9+Mo/95.9)/(Ti/47.9+V/50.9) ranges from 0.1 to 15.
    Type: Grant
    Filed: December 11, 2012
    Date of Patent: March 19, 2019
    Assignee: BAOSHAN IRON & STEEL CO., LTD
    Inventors: Huabing Zhang, Guobao Li, Xijiang Lu, Yongjie Yang, Zhuochao Hu, Kanyi Shen, Jiaqiang Gao, Meihong Wu
  • Patent number: 9905361
    Abstract: A manufacturing method of oriented silicon steel with magnetic induction B8 of not less than 1.88 T, comprising the following steps: 1) smelting and continuous casting to obtain a slab, wherein the content of N is controlled at 0.002-0.014 wt % in the smelting stage; 2) hot-rolling; 3) cold-rolling; 4) decarbonizing and annealing; 5) nitriding treatment, wherein infiltrated nitrogen content [N]D is controlled to satisfy the formula: 328?0.14a?0.85b?2.33c?[N]D?362?0.16a?0.94b?2.57c, wherein a is the content of Als in the smelting step, with the unit of ppm; b is the content of N element, with the unit of ppm; and c is primary grains size, with the unit of ?m; 6) coating a steel's surfaces with a magnesium oxide layer and annealing; and 7) applying an insulating coating.
    Type: Grant
    Filed: December 11, 2012
    Date of Patent: February 27, 2018
    Assignee: Baoshan Iron & Steel Co., Ltd.
    Inventors: Kanyi Shen, Guobao Li, Shuangjie Chu, Yezhong Sun, Huabing Zhang, Yongjie Yang, Zhuochao Hu, Bin Zhao, Qi Xu, Jie Huang, Peili Zhang
  • Patent number: 9822423
    Abstract: A method for producing a silicon steel normalizing substrate comprises: steelmaking, hot rolling and normalizing steps. The normalizing step uses a normalizing furnace having a nonoxidizing heating furnace section. The nonoxidizing heating furnace section comprises more than 3 furnace zones. An energy investment ratio of the furnace zones used in the nonoxidizing heating furnace section is adjusted, so as to control an excess coefficient ? of the nonoxidizing heating furnace section to be within a range of 0.8??<1.0.
    Type: Grant
    Filed: March 26, 2012
    Date of Patent: November 21, 2017
    Assignee: Baoshan Iron & Steel, Co., Ltd.
    Inventors: Hongxu Hei, Bo Wang, Shishu Xie, Xiandong Liu, Guohua Yang, Yongjie Yang, Aihua Ma, Xiaolin Li, Liang Zou, Huawei Zhang
  • Patent number: 9334405
    Abstract: The present invention refers to a chromium-free insulation coating material for non-oriented silicon steel, comprising, in parts by weight, the following components: metal dihydrogen phosphate salt of 100 parts, epoxy resin of 10˜60 parts, naphthenate drier or isooctanoate metal salt drier of 0.001˜10 parts, organic solvent of 0.001˜100 parts and pure water of 60˜2000 parts. The metal dihydrogen phosphate salt is Al(H2PO4)3, Mg(H2PO4)2, Ca(H2PO4)2 or Zn(H2PO4)2; the epoxy resin is water-soluble epoxy resin or epoxy resin emulsion. Chromium-free insulation coating material of the present invention, after being coated on non-oriented silicon steel, renders highly transparent appearance, and has excellent insulativity, corrosion resistance, adhesiveness, weldability and manufacturability, so as to eliminate defects of the existing chromium-free coating, such as sticky and un-wear-resistant and to meet environment protection requirements.
    Type: Grant
    Filed: April 13, 2011
    Date of Patent: May 10, 2016
    Assignee: Baoshan Iron & Steel Co., LTD.
    Inventors: Yunpeng Xu, Yongjie Yang, Dengfeng Li, Yaming Ji, Zipeng Zhao, Lingyun Chen, Xiao Chen, Jie Huang
  • Publication number: 20150302962
    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: Application
    Filed: December 11, 2012
    Publication date: October 22, 2015
    Inventors: Guohua YANG, Xiandong LIU, Guobao LI, Yongjie YANG, Zhuochao HU, Hongxu HEI, Jun ZHANG, Dejun SU, Huande SUN, Meihong WU
  • Publication number: 20150255211
    Abstract: A manufacturing method of oriented silicon steel with magnetic induction B8 of not less than 1.88 T, comprising the following steps: 1) smelting and continuous casting to obtain a slab, wherein the content of N is controlled at 0.002-0.014 wt % in the smelting stage; 2) hot-rolling; 3) cold-rolling; 4) decarbonizing and annealing; 5) nitriding treatment, wherein infiltrated nitrogen content [N]D is controlled to satisfy the formula: 328?0.14a?0.85b?2.33c?[N]D?362?0.16a?0.94b?2.57c, wherein a is the content of Als in the smelting step, with the unit of ppm; b is the content of N element, with the unit of ppm; and c is primary grains size, with the unit of ?m; 6) coating a steel's surfaces with a magnesium oxide layer and annealing; and 7) applying an insulating coating.
    Type: Application
    Filed: December 11, 2012
    Publication date: September 10, 2015
    Applicant: BAOSHAN IRON & STEEL CO., LTD.
    Inventors: Kanyi Shen, Guobao Li, Shuangjie Chu, Yezhong Sun, Huabing Zhang, Yongjie Yang, Zhuochao Hu, Bin Zhao, Qi Hu, Jie Huang, Peili Zhang
  • Publication number: 20150206633
    Abstract: The invention relates to high magnetic induction oriented silicon steel and a preparation method thereof. The oriented silicon steel comprises the following chemical elements by weight percent: 0.035-0.120% of C, 2.9-4.5% of Si, 0.05-0.20% of Mn, 0.005-0.050% of P, 0.005-0.012% of S, 0.015-0.035% of Als, 0.001-0.010% of N, 0.05-0.30% of Cr, 0.005-0.090% of Sn, not more than 0.0100% of V, not more than 0.0100% of Ti, at least one of trace elements of Sb, Bi, Ni and Mo, and the balance of Fe and other inevitable impurities, wherein Sb+Bi+Nb+Mo is 0.0015-0.0250% and (Sb/121.8+Bi/209.0+Nb/92.9+Mo/95.9)/(Ti/47.9+V/50.9) ranges from 0.1 to 15.
    Type: Application
    Filed: December 11, 2012
    Publication date: July 23, 2015
    Inventors: Huabing Zhang, Guabao Li, Xijiang Lu, Yongjie Yang, Zhuochao Hu, Kanyi Shen, Jiaqiang Gao, Meihong Wu
  • Patent number: 9038429
    Abstract: The invention provides a method for producing grain-oriented silicon steel with single cold rolling, comprising: 1) smelting, refining and continuous casting to obtain a casting blank; 2) hot rolling; 3) normalization, i.e. normalizing annealing and cooling; 4) cold-rolling, i.e. single cold rolling at a cold rolling reduction rate of 75-92%; 5) decarburizing annealing at 780-880° C. for 80-350 s in a protective atmosphere having a due point of 40-80° C., wherein the total oxygen [O] in the surface of the decarburized sheet: 171/t?[O]?313/t (t represents the actual thickness of the steel sheet in mm), the amount of absorbed nitrogen: 2-10 ppm; 6) high temperature annealing, wherein the dew point of the protective atmosphere: 0-50° C., the temperature holding time at the first stage: 6-30 h, the amount of absorbed nitrogen during high-temperature annealing: 10-40 ppm; 7) hot-leveling annealing.
    Type: Grant
    Filed: December 31, 2009
    Date of Patent: May 26, 2015
    Assignee: Baoshan Iron & Steel Co., Ltd.
    Inventors: Guobao Li, Pijun Zhang, Yongjie Yang, Kanyi Shen, Zhuochao Hu, Peiwen Wu, Weizhong Jin, Quanli Jiang
  • Publication number: 20150013847
    Abstract: A method for producing a silicon steel normalizing substrate comprises: steelmaking, hot rolling and normalizing steps. The normalizing step uses a normalizing furnace having a nonoxidizing heating furnace section. The nonoxidizing heating furnace section comprises more than 3 furnace zones. An energy investment ratio of the furnace zones used in the nonoxidizing heating furnace section is adjusted, so as to control an excess coefficient ? of the nonoxidizing heating furnace section to be within a range of 0.8??<1.0.
    Type: Application
    Filed: March 26, 2012
    Publication date: January 15, 2015
    Applicant: BAOSHAN IRON & STEEL CO., LTD.
    Inventors: Hongxu Hei, Bo Wang, Shishu Xie, Xiandong Liu, Guohua Yang, Yongjie Yang, Aihua Ma, Xiaolin Li, Liang Zou, Huawei Zhang
  • Publication number: 20130292005
    Abstract: An annealing separator for manufacturing grain-oriented silicon steel with mirror-like surface having good magnetic performance consists of the composition of which is 77˜98 by wt % of Al2O3 powder, 1˜8 by wt % of alkaline earth powder, 1˜15 by wt % of alkali metal chloride and/or alkaline earth metal chloride. The annealing separator of the invention can avoid forming a glass-film undercoating on the surface of the steel sheet during high-temperature annealing, and at the same time, the oxide embedded at near-surface of the sheet is removed by means of corrosive reaction of the chloride, so that a produce with smooth surface and stable magnetic performance is obtained.
    Type: Application
    Filed: April 14, 2011
    Publication date: November 7, 2013
    Inventors: Zipeng Zhao, Yaming Ji, Yongjie Yang, Guobao Li, Dengfeng Li, Yunpeng Xu
  • Publication number: 20130203896
    Abstract: The present invention refers to a chromium-free insulation coating material for non-oriented silicon steel, comprising, in parts by weight, the following components: metal dihydrogen phosphate salt of 100 parts, epoxy resin of 10˜60 parts, naphthenate drier or isooctanoate metal salt drier of 0.001˜10 parts, organic solvent of 0.001˜100 parts and pure water of 60˜2000 parts. The metal dihydrogen phosphate salt is Al(H2PO4)3, Mg(H2PO4)2, Ca(H2PO4)2 or Zn(H2PO4)2; the epoxy resin is water-soluble epoxy resin or epoxy resin emulsion. Chromium-free insulation coating material of the present invention, after being coated on non-oriented silicon steel, renders highly transparent appearance, and has excellent insulativity, corrosion resistance, adhesiveness, weldability and manufacturability, so as to eliminate defects of the existing chromium-free coating, such as sticky and un-wear-resistant and to meet environment protection requirements.
    Type: Application
    Filed: April 13, 2011
    Publication date: August 8, 2013
    Inventors: Yunpeng Xu, Yongjie Yang, Dengfeng Li, Yaming Ji, Zipeng Zhao, Lingyun Chen, Xiao Chen, Jie Huang
  • Patent number: 8231739
    Abstract: A method of manufacturing oriented Si steel containing Cu with high electric-magnetic property comprises: hot rolling slab; after first cold rolling, heating it to 800° C. or higher temperature and performing intermediate decarburization annealing in a protective atmosphere with PH2O/PH2 of 0.50˜0.88 for 3-8 minutes, to decrease carbon content of the steel plate to less than 30 ppm; then peening and acid-pickling to remove oxide of Fe on surface and to control oxygen content to lower than 500 ppm; secondary cold rolling to final thickness and coating separation agent in water-slurry form; drying to decrease water content to lower than 1.5%; high-temperature annealing in a protective atmosphere containing hydrogen with oxidation degree (PH2O/PH2) of 0.0001-0.2; finally applying a tension coating and leveling tension annealing.
    Type: Grant
    Filed: April 24, 2009
    Date of Patent: July 31, 2012
    Assignee: Baoshan Iron & Steel Co., Ltd.
    Inventors: Yaming Ji, Huande Sun, Guohua Yang, Yongjie Yang, Yunpeng Xu, Changguo Huang, Guobao Li
  • Publication number: 20120000262
    Abstract: The invention provides a method for producing grain-oriented silicon steel with single cold rolling, comprising: 1) smelting, refining and continuous casting to obtain a casting blank; 2) hot rolling; 3) normalization, i.e. normalizing annealing and cooling; 4) cold-rolling, i.e. single cold rolling at a cold rolling reduction rate of 75-92%; 5) decarburizing annealing at 780-880° C. for 80-350 s in a protective atmosphere having a due point of 40-80° C., wherein the total oxygen [0] in the surface of the decarburized sheet: 171/t?[O]?313/t (t represents the actual thickness of the steel sheet in mm), the amount of absorbed nitrogen: 2-10 ppm; 6) high temperature annealing, wherein the dew point of the protective atmosphere: 0-50° C., the temperature holding time at the first stage: 6-30 h, the amount of absorbed nitrogen during high-temperature annealing: 10-40 ppm; 7) hot-leveling annealing.
    Type: Application
    Filed: December 31, 2009
    Publication date: January 5, 2012
    Applicant: BAOSHAN IRON & STEEL CO., LTD.
    Inventors: Guobao Li, Pijun Zhang, Yongjie Yang, Kanyi Shen, Zhuochao Hu, Peiwen Wu, Weizhong Jin, Quanli Jiang
  • Publication number: 20110180187
    Abstract: A method of manufacturing oriented Si steel containing Cu with high electric-magnetic property comprises: hot rolling slab; after first cold rolling, heating it to 800° C. or higher temperature and performing intermediate decarburization annealing in a protective atmosphere with PH2O/PH2 of 0.50˜0.88 for 3-8 minutes, to decrease carbon content of the steel plate to less than 30 ppm; then peening and acid-pickling to remove oxide of Fe on surface and to control oxygen content to lower than 500 ppm; secondary cold rolling to final thickness and coating separation agent in water-slurry form; drying to decrease water content to lower than 1.5%; high-temperature annealing in a protective atmosphere containing hydrogen with oxidation degree (PH2O/PH2) of 0.0001-0.2; finally applying a tension coating and leveling tension annealing.
    Type: Application
    Filed: April 24, 2009
    Publication date: July 28, 2011
    Applicant: BAOSHAN IRON & STEEL CO., LTD.
    Inventors: Yaming JI, Huande Sun, Guohua Yang, Yongjie Yang, Yunpeng Xu, Changguo Huang, Guobao Li
  • Publication number: 20030087237
    Abstract: The invention relates to methods for extending a primer or a pair of primers in low-temperature cycle DNA amplification for cycle sequencing and PCR. In particular, the methods contemplate the combined use of moderately thermostable DNA polymerases in the presence of a low concentration of glycerol or ethylene glycol, or the mixtures thereof, as an agent to reduce the melting temperature of DNA (that is, the temperature at which the double-strands of DNA are denatured). Predistributed reaction mixtures of a high-fidelity and high processivity DNA polymerase stable at room temperature for several weeks in ready-to-use kits are also contemplated by the invention.
    Type: Application
    Filed: June 8, 2001
    Publication date: May 8, 2003
    Inventors: Guofan Hong, Yongjie Yang, Jia Zhu