Patents by Inventor Huande Sun
Huande Sun 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).
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Patent number: 11638971Abstract: 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: GrantFiled: January 24, 2018Date of Patent: May 2, 2023Assignee: BAOSHAN IRON & STEEL CO., LTD.Inventors: Meihong Wu, Zipeng Zhao, Guobao Li, Kanyi Shen, Zhuochao Hu, Chen Ling, Huande Sun, Huabing Zhang
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Publication number: 20210101230Abstract: 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: ApplicationFiled: January 24, 2018Publication date: April 8, 2021Applicant: BAOSHAN IRON & STEEL CO., LTD.Inventors: Meihong WU, Zipeng ZHAO, Guobao LI, Kanyi SHEN, Zhuochao HU, Chen LING, Huande SUN, Huabing ZHANG
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Patent number: 10566119Abstract: 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: GrantFiled: December 11, 2012Date of Patent: February 18, 2020Assignee: 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
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Patent number: 9460054Abstract: A method for detecting electromagnetic property of oriented silicon steel, the method comprises: measuring Euler angles of each of crystal grains in a specimen by use of metallographic etch-pit method; calculating orientation deviation angle ?i (degree) of the crystal grain; combining area Si (mm2) of the crystal grain and correction coefficient X of element Si (X=0.1˜10 T/degree); correcting on the basis of the magnetic property B0 (saturation magnetic induction, T) of single-crystal material by using these parameters (?i, Si, X), formula for correcting is B 8 = - 0.015 × X × ? n = 1 i ? S i ? ? ? i ? ? n = 1 i ? S i + ( B 0 - 0.04 ) ( 1 ) obtaining electromagnetic property B8 of the oriented silicon steel by the above calculations.Type: GrantFiled: April 12, 2011Date of Patent: October 4, 2016Assignee: BAOSHAN IRON & STEEL CO., LTD.Inventors: Meihong Wu, Weizhong Jin, Huande Sun, Guohua Yang, Kanyi Shen, Jie Huang, Guobao Li
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Publication number: 20150302962Abstract: 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: ApplicationFiled: December 11, 2012Publication date: October 22, 2015Inventors: Guohua YANG, Xiandong LIU, Guobao LI, Yongjie YANG, Zhuochao HU, Hongxu HEI, Jun ZHANG, Dejun SU, Huande SUN, Meihong WU
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Publication number: 20130299049Abstract: A method for manufacturing a grain-oriented silicon steel having excellent magnetic performance, comprising steps as follows 1)conventionally melting and casting into a steel blank; 2) heating the steel blank and hot rolling the same into a strip of steel; 3)normalizing process; carrying out the normalizing process having two stages, wherein the strip is firstly heated to 1100˜1200° C., then cooled to 900˜1000° C. within 50˜200 s; and next, the strip is rapidly cooled in water having a temperature of 10-100; in this period, a tension force is applied to the strip of steel, the strip of steel in the temperature range of 900 ° C.˜500° C. has a stress of 1˜200N/mm2; 4)cold rolling, i.e. carrying out a primary cold rolling, or a double cold rolling with intermediate annealing; 5)carrying out primary recrystallizing annealing, then coating an annealing separator, whose main composition is MgO, to carry out final product annealing comprising secondary recrystallizing annealing and purifying annealing.Type: ApplicationFiled: April 28, 2011Publication date: November 14, 2013Inventors: Meihong Wu, Weizhong Jin, Huande Sun, Guohua Yang, Kanyi Shen, Jie Huang, Deyang Hu, Guobao Li
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Publication number: 20130090876Abstract: A method for detecting electromagnetic property of oriented silicon steel, the method comprises: measuring Euler angles of each of crystal grains in a specimen by use of metallographic etch-pit method; calculating orientation deviation angle ?i (degree) of the crystal grain; combining area Si (mm2) of the crystal grain and correction coefficient X of element Si (X=0.1˜10 T/degree); correcting on the basis of the magnetic property B0 (saturation magnetic induction, T) of single-crystal material by using these parameters (?i, Si, X), formula for correcting is B 8 = - 0.015 × X × ? n = 1 i ? S i ? ? ? i ? ? n = 1 i ? S i + ( B 0 - 0.04 ) ( 1 ) ; obtaining electromagnetic property B8 of the oriented silicon steel by the above calculations.Type: ApplicationFiled: April 12, 2011Publication date: April 11, 2013Applicant: BAOSHAN IRON & STEEL CO., LTD.Inventors: Meihong Wu, Weizhong Jin, Huande Sun, Guohua Yang, Kanyi Shen, Jie Huang, Guobao Li
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Patent number: 8333846Abstract: A manufacturing method of oriented Si steel with high electric-magnetic property comprises the following steps: smelting steel in converter or electric furnace; refining molten steel in two stages; continuous casting to obtain slab; hot rolling; first cold rolling; decarburizing annealing; secondary cold rolling; applying an annealing separator based on MgO and annealing at high temperature; applying an insulating coating and leveling tension annealing. The slab comprises (in wt %): C 0.020-0.050%, Si 2.6-3.6%, S 0.015-0.025%, Als 0.008-0.028%, N 0.005-0.020%, Mn 0.15-0.5%, Cu 0.3-1.2%, balance Fe and inevitable impurities, in which 10?Mn/S?20 and Cu/Mn?2. The method could produce oriented Si steel with high magnetic induction intensity and low iron loss at low cost.Type: GrantFiled: March 25, 2009Date of Patent: December 18, 2012Assignee: Baoshan Iron & Steel Co., Ltd.Inventors: Guohua Yang, Huande Sun, Yaming Ji, Guobao Li, Hongxu Hei
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Patent number: 8231739Abstract: 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: GrantFiled: April 24, 2009Date of Patent: July 31, 2012Assignee: Baoshan Iron & Steel Co., Ltd.Inventors: Yaming Ji, Huande Sun, Guohua Yang, Yongjie Yang, Yunpeng Xu, Changguo Huang, Guobao Li
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Publication number: 20110180187Abstract: 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: ApplicationFiled: April 24, 2009Publication date: July 28, 2011Applicant: BAOSHAN IRON & STEEL CO., LTD.Inventors: Yaming JI, Huande Sun, Guohua Yang, Yongjie Yang, Yunpeng Xu, Changguo Huang, Guobao Li
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Publication number: 20110139313Abstract: A manufacturing method of oriented Si steel with high electric-magnetic property comprises the following steps: smelting steel in converter or electric furnace; refining molten steel in two stages; continuous casting to obtain slab; hot rolling; first cold rolling; decarburizing annealing; secondary cold rolling; applying an annealing separator based on MgO and annealing at high temperature; applying an insulating coating and leveling tension annealing. The slab comprises (in wt %): C 0.020-0.050%, Si 2.6-3.6%, S 0.015-0.025%, Als 0.008-0.028%, N 0.005-0.020%, Mn 0.15-0.5%, Cu 0.3-1.2%, balance Fe and inevitable impurities, in which 10?Mn/S?20 and Cu/Mn?2. The method could produce oriented Si steel with high magnetic induction intensity and low iron loss at low cost.Type: ApplicationFiled: March 25, 2009Publication date: June 16, 2011Applicant: BAOSHAN IRON & STEEL CO., LTD.Inventors: Guohua Yang, Huande Sun, Yaming Ji, Guobao Li, Hongxu Hei