Patents by Inventor Guobao Li
Guobao Li 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: 11968766Abstract: An induction heating system for a silicon steel core with a self-adhesive coating that includes an induction heating device having a columnar induction heating coil with a hollow cavity that carries out induction heating on a silicon steel plate at a medium frequency of 6-20 KHz. By rapid induction heating at a medium frequency, a silicon steel core with a self-adhesive coating can be rapidly cured, thereby greatly shortening the processing time, improving production efficiency, and facilitating automated operation in the production of a silicon steel core with a self-adhesive coating. The system also ensures the quality of the cured core products that can be widely applied in the field of the production of silicon steel cores with a self-adhesive coating.Type: GrantFiled: August 2, 2019Date of Patent: April 23, 2024Assignee: BAOSHAN IRON & STEEL CO. LTD.Inventors: Xiaoli Jin, Dengfeng Li, Yueming Zhou, Bo Wang, Guobao Li
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Publication number: 20240117813Abstract: The present disclosure discloses a fan blade structure, a fan and a fan lamp, belonging to the field of household appliances. A fan blade structure includes: an inner edge located at a windward side, where the inner edge at least partially protrudes towards a leeward side, and the inner edge extends obliquely upwards, gradually, from one end of the fan blade structure close to a rotational axis to one end of the fan blade structure facing away from the rotational axis; an outer edge located at the leeward side, where the outer edge protrudes towards the leeward side, and the outer edge extends obliquely upwards from the end of the fan blade structure close to the rotational axis to the end of the fan blade structure facing away from the rotational axis; and a cambered surface connected between the inner edge and the outer edge.Type: ApplicationFiled: December 16, 2023Publication date: April 11, 2024Applicants: SUZHOU OPPLE LIGHTING CO., LTD., OPPLE LIGHTING CO., LTD.Inventors: Xiaolei WANG, Guobao ZHANG, Shang LI, Yaohai WANG
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Publication number: 20240071661Abstract: A manufacturing method for low-magnetostrictive oriented silicon steel is provided, wherein the oriented silicon steel comprises a silicon steel substrate and an insulating coating on the surface of the silicon steel substrate. The manufacturing method comprises: performing single-sided laser etching on the silicon steel substrate, wherein the side of the silicon steel substrate, on which single-sided laser etching is performed, is a first surface, and the side opposite to the first surface is a second surface; determining a deflection difference between the first surface and the second surface based on the power of the laser etching, and determining a difference in the amount of the insulating coatings on the first surface and the second surface based on the deflection difference; and forming insulating coatings on the first surface and the second surface.Type: ApplicationFiled: January 11, 2022Publication date: February 29, 2024Applicant: BAOSHAN IRON & STEEL CO., LTD.Inventors: Meihong WU, Guobao LI, Shuangjie CHU, Zipeng ZHAO, Baojun LIU, Kanyi SHEN, Yongjie YANG, Zhuochao HU, Yaming JI, Chen LING
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Publication number: 20240011112Abstract: The present invention discloses a Cu-containing non-oriented electrical steel plate having high cleanliness, comprising the following chemical elements in percentage by mass: 0<C?0.003%; Si: 0.1-2.0%; Mn: 0.1-0.55%; S: 0-0.004%; Cu: 0.003-0.2%; Al: 0.1-1.0%; and the balance being Fe and inevitable impurities. In addition, the present invention further discloses a continuous annealing process for the Cu-containing non-oriented electrical steel plate having high cleanliness. Moreover, the present invention further discloses a manufacturing method for Cu-containing non-oriented electrical steel plate having high cleanliness, including the steps of: smelting and casting; hot rolling; normalizing; cold rolling; performing the continuous annealing process; and applying an insulation coating to obtain a finished non-oriented electrical steel plate. The Cu-containing non-oriented electrical steel plate having high-cleanliness is high in cleanliness and excellent in magnetic performance.Type: ApplicationFiled: August 26, 2020Publication date: January 11, 2024Applicant: BAOSHAN IRON & STEEL CO., LTDInventors: Feng ZHANG, Bo WANG, Kanyi SHEN, Baojun LIU, Guobao LI, Shuangjie CHU
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Publication number: 20230416883Abstract: The present invention discloses a non-oriented electrical steel plate, comprising the following chemical elements in percentage by mass: 0<C?0.003%; Si: 1.6-3.4%; Mn: 0.1-1.2%; S?0.003%; Al: 0.1-3.0%; Sn: 0.005-0.2%; Ca: 0.0005-0.01%; O?0.003%; N?0.003%; and the balance being Fe and inevitable impurities. In addition, the present invention further discloses a manufacturing method for the above non-oriented electrical steel plate, including the steps of: smelting and casting; hot rolling; intermediate annealing; cold rolling; continuous annealing; and applying an insulation coating to obtain a finished non-oriented electrical steel plate. The non-oriented electrical steel plate is excellent in magnetic property.Type: ApplicationFiled: August 26, 2020Publication date: December 28, 2023Applicant: BAOSHAN IRON & STEEL CO., LTDInventors: Shuangjie CHU, Guobao LI, Feng ZHANG, Zhicheng WANG, Kanyi SHEN, Baojun LIU
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Publication number: 20230203613Abstract: Disclosed is a low-cost non-oriented electrical steel plate with an extremely low aluminum content, which plate comprises the following chemical elements in percentage by mass: 0.003% or less of C, 0.1%-1.2% of Si, 0.1%-0.4% of Mn, 0.01%-0.2% of P, 0.003% or less of S, 0.001% or less of Al, 0.003%-0.01% of O, 0.003% or less of N, and 0.005%-0.05% of Sn, with the condition Si2/P: 0.89-26.04 being satisfied. In addition, further disclosed is a method for manufacturing the non-oriented electrical steel plate. The method comprises steps of: (1) smelting; (2) continuous casting; (3) hot rolling: wherein a hot rolled plate is subjected to soaking and heat preservation by means of residual heat of hot rolled steel coils, rather than being subjected to normalizing treatment or cover furnace annealing after coiling; (4) primary cold rolling; and (5) continuous annealing.Type: ApplicationFiled: May 25, 2021Publication date: June 29, 2023Inventors: Feng Zhang, Kanyi Shen, Zhenyu Zong, Guobao Li, Xianshi Fang
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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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Silicon steel product with low iron loss for low-noise transformer, and manufacturing method thereof
Patent number: 11633808Abstract: An oriented silicon steel product with a low iron loss for a low-noise transformer, and manufacturing method thereof are provided. The oriented silicon steel product comprises: a silicon steel substrate, a magnesium silicate bottom layer formed on a surface of the silicon steel substrate, and an insulation coating applied on the magnesium silicate bottom layer. The magnesium silicate bottom layer has a visible light normal reflectivity (R) of 40-60% for. By strictly controlling the visible light normal reflectivity of the magnesium silicate bottom layer of the silicon steel substrate and the evenness of the gloss of magnesium silicate bottom layer, lower iron loss, and reduced magnetostriction can be achieved, and thus a silicon steel product with low noise and particularly suitable for transformers can be obtained.Type: GrantFiled: June 13, 2017Date of Patent: April 25, 2023Assignee: BAOSHAN IRON & STEEL CO., LTD.Inventors: Zipeng Zhao, Changjun Hou, Banglin Xiang, Kanyi Shen, Guobao Li, Chen Ling, Weiyong Xie, Yanli Song -
Patent number: 11608541Abstract: 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: GrantFiled: March 25, 2019Date of Patent: March 21, 2023Assignee: BAOSHAN IRON & STEEL CO., LTD.Inventors: Huabing Zhang, Shuangjie Chu, Guobao Li, Wen Xiao, Baojun Liu, Yongjie Yang, Kanyi Shen, Dan Han, Zhining Hu
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Publication number: 20220333226Abstract: Disclosed is a non-oriented electrical steel sheet with low magnetic anisotropy, which comprises the following chemical elements in mass percentage: 0<C?0.005%; Si: 2.0-3.5%; Mn: 0.1-2.0%; at least one of Sn and Sb: 0.003-0.2%; Al: 0.2-1.8%; the balance being Fe and inevitable impurities. Further disclosed is a manufacturing method for the above non-oriented electrical steel sheet with low magnetic anisotropy, which includes the following steps: (1) smelting and casting; (2) hot rolling; (3) normalizing; (4) cold rolling; (5) continuous annealing: rapidly heating a cold-rolled steel sheet from an initial temperature of 350° C.-750° C. to a soaking temperature at a heating rate of 50-800° C./s, and performing soaking and heat preservation; and (6) applying an insulating coating to obtain a finished non-oriented electrical steel sheet. The non-oriented electrical steel sheet is characterized by low iron loss and low magnetic anisotropy at high frequency.Type: ApplicationFiled: August 26, 2020Publication date: October 20, 2022Applicant: BAOSHAN IRON & STEEL CO., LTDInventors: Feng ZHANG, Shuangjie CHU, Bo WANG, Wenyue ZHANG, Kanyi SHEN, Guobao LI
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Patent number: 11459634Abstract: 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: GrantFiled: June 21, 2018Date of Patent: October 4, 2022Assignee: BAOSHAN IRON & STEEL CO., LTD.Inventors: Shuangjie Chu, Guobao Li, Yongjie Yang, Zipeng Zhao, Changsong Ma, Kanyi Shen, Meihong Wu, Yaming Ji, Huabing Zhang, Zhuochao Hu
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Publication number: 20220275472Abstract: Provided is a 600 MPa grade non-oriented electrical steel sheet with excellent magnetic properties, comprising the following chemical elements in mass percentage: 0<C?0.0035%; Si: 2.0-3.5%; Mn: 0.4-1.2%; P: 0.03-0.2%; Al: 0.4-2.0%; and the balance being Fe and unavoidable impurities. Also provided is a manufacturing method for the 600 MPa grade non-oriented electrical steel as described above, including the following steps: (1) converter smelting, RH refining and casting; (2) hot rolling; (3) normalizing; (4) cold rolling; (5) continuous annealing; and (6) applying an insulation coating to obtain a finished non-oriented electrical steel sheet.Type: ApplicationFiled: August 26, 2020Publication date: September 1, 2022Applicant: BAOSHAN IRON & STEEL CO., LTDInventors: Feng ZHANG, Baojun LIU, Jun LI, Bo WANG, Kanyi SHEN, Guobao LI
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Publication number: 20220275470Abstract: Disclosed is a high-magnetic-induction oriented silicon steel, wherein the chemical elements thereof are, in mass percentage: Si: 2.0-4.0%; C: 0.03-0.07%; Al: 0.015-0.035%; N: 0.003-0.010%; Nb: 0.0010-0.0500%, the balance being Fe and inevitable impurities. The manufacturing method for the high-magnetic-induction oriented silicon steel includes the steps of: (1) smelting and casting; (2) heating a slab; (3) hot rolling; (4) cold rolling; (5) decarbonizing and annealing; (6) nitriding treatment; (7) applying an MgO coating; (8) high temperature annealing; and (9) applying an insulating coating; wherein a high-magnetic-induction oriented silicon steel is obtained by the manufacturing method, having an average primary grain size of 14-22 ?m and a primary grain size variation coefficient of higher than 1.Type: ApplicationFiled: August 11, 2020Publication date: September 1, 2022Applicant: BAOSHAN IRON & STEEL CO., LTD.Inventors: Huabing ZHANG, Guobao LI, Kanyi SHEN, Baojun LIU, Changjun HOU, Xinqiang ZHANG, Jianbing CHEN, Meihong WU, Changsong MA, Desheng LIU
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Patent number: 11352680Abstract: 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: GrantFiled: May 16, 2018Date of Patent: June 7, 2022Assignee: BAOSHAN IRON & STEEL CO., LTD.Inventors: Huabing Zhang, Guobao Li, Baojun Liu, Dan Han, Xinqiang Zhang, Guanghua Cui, Jianbing Chen, Wen Xiao, Zipeng Zhao
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Patent number: 11355275Abstract: 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: GrantFiled: January 24, 2018Date of Patent: June 7, 2022Assignee: BAOSHAN IRON & STEEL CO., LTD.Inventors: Zipeng Zhao, Guobao Li, Yongjie Yang, Meihong Wu, Changsong Ma, Yaming Ji, Chen Ling, Weiyong Xie, Jianguo Guo
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Publication number: 20210227646Abstract: Provided is an induction heating system for a silicon steel core with a self-adhesive coating. The system comprises: an induction heating device, which comprises a columnar induction heating coil (72) with a hollow cavity, wherein the induction heating coil (72) carries out induction heating on a silicon steel plate (1) at a medium frequency of 6-20 KHz. By means of rapid induction heating at a medium frequency, a silicon steel core with a self-adhesive coating can be rapidly cured, thereby greatly shortening the processing time, improving production efficiency, and facilitating automated operation in a production process of a silicon steel core with a self-adhesive coating. Moreover, the system can ensure the curing quality of core products, and can be widely applied to the field of the production of silicon steel cores with a self-adhesive coating.Type: ApplicationFiled: August 2, 2019Publication date: July 22, 2021Inventors: Xiaoli JIN, Dengfeng LI, Yueming ZHOU, Bo WANG, Guobao LI
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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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Publication number: 20210047706Abstract: 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: ApplicationFiled: March 25, 2019Publication date: February 18, 2021Applicant: BAOSHAN IRON & STEEL CO., LTD.Inventors: Huabing ZHANG, Shuangjie CHU, Guobao LI, Wen XIAO, Baojun LIU, Yongjie YANG, Kanyi SHEN, Dan HAN, Zhining HU
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Publication number: 20200362433Abstract: 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: ApplicationFiled: June 21, 2018Publication date: November 19, 2020Inventors: Shuangjie CHU, Guobao LI, Yongjie YANG, Zipeng ZHAO, Changsong MA, Kanyi SHEN, Meihong WU, Yaming JI, Huabing ZHANG, Zhuochao HU
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Publication number: 20200291501Abstract: 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: ApplicationFiled: May 16, 2018Publication date: September 17, 2020Applicant: BAOSHAN IRON & STEEL CO., LTD.Inventors: Huabing ZHANG, Guobao LI, Baojun LIU, Dan HAN, Xinqiang ZHANG, Guanghua CUI, Jianbing CHEN, Wen XIAO, Zipeng ZHAO