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公开(公告)号：EP4439928A1
公开(公告)日：2024-10-02
申请号：EP22898280.7
申请日：2022-10-19
IPC分类号： H02K1/18
CPC分类号： H02K1/18
摘要： An electrical steel sheet includes an annular body. At least one of a plurality of adhesion layers (41) is a first adhesion layer. In one of two electrical steel sheets sandwiching the first adhesion layer in a stacking direction, when an imaginary axis intersecting with a central axis of the annular body and extending in an easy-magnetization direction is defined as an L-axis, an imaginary axis intersecting with the central axis and intersecting with the L-axis is defined as a C-axis, and the electrical steel sheet is partitioned into a plurality of sections (S) in a circumferential direction of the annular body by the L-axis and the C-axis, at least one of the plurality of sections (S) is a first section. In the first section, an area of the first adhesion layer in a first portion (P1) of the electrical steel sheet where a main magnetic flux is generated in the L-axis direction is smaller than an area of the first adhesion layer in a second portion (P2) of the electrical steel sheet where the main magnetic flux is generated in the C-axis direction.
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公开(公告)号：EP4170876A1
公开(公告)日：2023-04-26
申请号：EP21825536.2
申请日：2021-06-17
摘要： Provided is a method of manufacturing a laminated core by punching electrical steel strips including an insulation coating to obtain core single sheets and laminating the core single sheets, the method including: pressurizing two or more electrical steel strips using a guide roller to temporarily bond the electrical steel strips immediately before the punching; and obtaining the core single sheets by performing the punching after inserting the two or more electrical steel strips after the temporary bonding into a punching die.
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公开(公告)号：EP2264220A1
公开(公告)日：2010-12-22
申请号：EP09728022.6
申请日：2009-03-30
发明人： TAKAHASHI, Fumiaki , TAKEDA, Kazutoshi , FUJII, Hiroyasu , YAMAZAKI, Shuichi , NATORI, Yoshiaki
CPC分类号： C23C22/74 , C21D8/1288 , C21D2201/05 , C23C22/20 , C23C22/22 , H01F1/14725 , H01F1/18
摘要： A grain-oriented electrical steel sheet has a tension film that does not include chromium. In the present invention, the tension film, including a phosphate and silica as constituents, includes a manganese compound and a potassium compound. The mole ratio K/Mn of potassium to manganese in the film is set to a certain range. However, the manganese described herein does not refer to manganese derived from a manganese phosphate included in raw materials of the film. The film can be produced by preparing a coating solution by adding a compound, which includes the phosphate and the silica and also includes the potassium and the manganese, and applying the coating solution on a grain-oriented electrical steel sheet after final annealing is completed, followed by drying and baking.
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公开(公告)号：EP4306662A1
公开(公告)日：2024-01-17
申请号：EP22767281.3
申请日：2022-03-11
摘要： This grain-oriented electrical steel sheet is a grain-oriented electrical steel sheet having a final annealing film mainly composed of forsterite and an insulation coating containing pseudo-tetragonal aluminum borate and silica on its surface, wherein one surface or both surfaces of the steel sheet have linear grooves or dot-row shaped recesses with a depth of 5 to 40 µm.
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公开(公告)号：EP3872227A1
公开(公告)日：2021-09-01
申请号：EP19875492.1
申请日：2019-10-02
摘要： [Problem] To provide: a coating liquid for forming an insulation coating for grain-oriented electrical steel sheets, which enables the achievement of excellent coating properties including high coating tension and excellent corrosion resistance even without using a chromium compound; a grain-oriented electrical steel sheet; and a method for producing a grain-oriented electrical steel sheet. [Solution] A coating liquid for forming an insulation coating for grain-oriented electrical steel sheets, which contains boric acid and hydrated silicate particles containing aluminum.
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公开(公告)号：EP3239352B1
公开(公告)日：2019-08-07
申请号：EP15872972.3
申请日：2015-12-21
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7.发明公开
公开(公告)号：EP2537958A1
公开(公告)日：2012-12-26
申请号：EP11744614.6
申请日：2011-02-15
发明人： YAMAZAKI, Shuichi , KUBOTA, Takeshi , KUROSAKI, Yousuke , FUJIKURA, Masahiro , SHIMAZU, Takahide
CPC分类号： H01F1/14783 , C21D1/26 , C21D6/002 , C21D6/005 , C21D6/008 , C21D8/12 , C21D8/1244 , C21D8/1283 , C21D8/1288 , C21D9/46 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/34 , C23C8/10 , C23C8/18 , C23C22/07 , C23C22/50 , C23C22/74 , C23C24/00 , C23C28/00 , H01F1/18 , H01F41/32
摘要： A non-oriented electrical steel sheet includes: a base iron (1); and a tension applying type insulating film (2) of not less than 1 g/m 2 nor more than 6 g/m 2 on a surface of the base iron (1). An oxide layer (3) containing at least one type of oxide selected from the group consisting of Si, Al, and Cr and having a thickness of not less than 0.01 µm nor more than 0.5 µm is formed on the surface of the base iron (1).
摘要翻译： 无方向性电磁钢板包括：基底铁（1）; 以及在基础铁（1）的表面上不小于1g / m 2且不大于6g / m 2的张力施加型绝缘膜（2）。 在基底铁的表面上形成含有选自Si，Al和Cr中至少一种类型的氧化物层（3），其厚度不小于0.01μm不大于0.5μm， 1）。
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8.发明公开
公开(公告)号：EP4033005A1
公开(公告)日：2022-07-27
申请号：EP20865681.9
申请日：2020-09-18
发明人： TAKEDA, Kazutoshi , YAMAZAKI, Shuichi , MATSUMOTO, Takuya , FUJII, Hiroyasu , TAKAHASHI, Masaru
摘要： There is provided a non-oriented electrical steel sheet that includes a base metal steel sheet and an insulating coating film that is formed on a surface of the base metal steel sheet, wherein the insulating coating film mainly contains metal phosphate, organic resin, and water-soluble organic compound, the water-soluble organic compound has an SP value that is within a range of 10.0 to 20.0 (cal/cm 3 ) 1/2 , the metal phosphate contains aluminum and zinc as metallic elements, and when measurement by an X-ray photoelectron spectroscopy is performed from a surface of the insulating coating film in a thickness direction of the non-oriented electrical steel sheet, a depth at which a strength of a 2p peak of zinc reaches a maximum is present closer to the surface side than a depth at which a strength of a 2p peak of aluminum reaches a maximum, and a maximum value of the strength of the 2p peak of zinc is 1 to 20 times a strength of the 2p peak of aluminum at the depth at which the strength of the 2p peak of zinc reaches a maximum.
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公开(公告)号：EP3922741A1
公开(公告)日：2021-12-15
申请号：EP20920764.6
申请日：2020-04-17
发明人： FUJII, Hiroyasu , MAKI, Jun , TAKEDA, Kazutoshi , MIMURA, Hiroyuki , KANTO, Yusuke , YAMAZAKI, Shuichi
摘要： A non-oriented electrical steel sheet according to one embodiment of this invention includes a base metal steel sheet and a composite coating film composed of a Zn-containing phosphate and an organic resin, the composite coating film being formed on a surface of the base metal steel sheet. A molar ratio of Zn to all metal components in the composite coating film is 10 mol% or more, and after the non-oriented electrical steel sheet is boiled for 20 minutes in boiled distilled water, an amount of soluble Zn in the distilled water is 1.0 mg/m 2 or more. The method for determining the amount of soluble Zn is in accordance with JIS K 0102: 2016 "Testing Methods for Industrial Wastewater", 53.3 "ICP Emission Spectroscopy".
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10.发明公开
公开(公告)号：EP3616802A1
公开(公告)日：2020-03-04
申请号：EP18790375.2
申请日：2018-04-25
摘要： A scale composition determination device (10) determines that Fe 2 O 3 has been generated in the outermost layer of a scale (SC) in the case where the absolute value of a difference between temperatures of a steel material SM measured by radiation thermometers (20a, 20b) is equal to or more than a predetermined temperature, and determines that Fe 2 O 3 has not been generated in the outermost layer of the scale (SC) in the case where the absolute value of the difference between the temperatures of the steel material SM measured by the radiation thermometers (20a, 20b) is not equal to or more than the predetermined temperature.
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