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公开(公告)号：EP4137600A1
公开(公告)日：2023-02-22
申请号：EP21789242.1
申请日：2021-04-16
摘要： A non-oriented electrical steel sheet including a base metal that has a chemical composition including, in mass%, C: 0.0010 to 0.0040%, Si: 3.5 to 4.9%, Mn: 0.05 to 0.20%, Al: 0.05 to 0.45%, P: 0.030% or less, S: 0.0030% or less, N: 0.0030% or less, O: 0.0100 to 0.0400%, Ca: less than 0.0010%, Ti: less than 0.0050%, Nb: less than 0.0050%, Zr: less than 0.0050%, V: less than 0.0050%, Cu: less than 0.20%, Ni: less than 0.50%, Sn: 0 to 0.05%, Sb: 0 to 0.05%, and a balance: Fe and impurities, and satisfying [4.0 ≤ Si + Al ≤ 5.0], in which the base metal has an O content of less than 0.0050% in a region excluding a portion from a surface of the base metal to a position of 10 µm in a depth direction of the base metal.
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公开(公告)号：EP4137599A1
公开(公告)日：2023-02-22
申请号：EP21788994.8
申请日：2021-04-16
摘要： A non-oriented electrical steel sheet including a base metal that has a chemical composition including, in mass%, C: 0.0010 to 0.0040%, Si: 4.0 to 5.0%, Mn: 0.20% or less Al: 0.010% or more and less than 0.050%, P: 0.030% or less, S: 0.0030% or less, N: 0.0005 to 0.0030%, O: 0.0100 to 0.0400%, Ca: less than 0.0010%, Ti: less than 0.0050%, Nb: less than 0.0050%, Zr: less than 0.0050%, V: less than 0.0050%, Cu: less than 0.20%, Ni: less than 0.50%, Sn: 0 to 0.05%, Sb: 0 to 0.05%, and a balance: Fe and impurities, in which the base metal has an O content of less than 0.0050% in a region excluding a portion from a surface of the base metal to a position of 10 µm in a depth direction of the base metal.
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公开(公告)号：EP3778931A1
公开(公告)日：2021-02-17
申请号：EP19777166.0
申请日：2019-03-26
发明人： KAMITANI, Hiroki , TANAKA, Takanori , SOMA, Atsushi , KONDO, Keiichi , MITSUNARI, Hideki , OKADA, Seiya , MATSUMOTO, Takuya , YOSHIDA, Shinji , ARAI, Yuji
摘要： A seamless steel pipe heat-treatment-finishing-treatment continuous facility (1) includes: a heat treatment apparatus (10); a steel pipe inspection apparatus (30) which performs a test for a surface defect and/or an inner defect of the seamless steel pipe, the steel pipe inspection apparatus (30) being disposed downstream of the heat treatment apparatus (10); a main transfer mechanism (100) which forms a main transfer path MT for transferring the seamless steel pipe, discharged from the heat treatment apparatus (10), to the steel pipe inspection apparatus (30) disposed downstream of the heat treatment apparatus (10); and a first forced steel pipe-temperature reduction apparatus (20A) which forcibly reduces a temperature of the seamless steel pipe on the main transfer path MT, the first forced steel pipe-temperature reduction apparatus (20A) being disposed on the main transfer path MT at a position downstream of the heat treatment apparatus (10) and upstream of the steel pipe inspection apparatus (30).
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公开(公告)号：EP3604614A1
公开(公告)日：2020-02-05
申请号：EP18771676.6
申请日：2018-03-23
IPC分类号： C23C22/00 , C22C38/00 , C22C38/06 , C23C22/08 , C23C22/12 , C23C22/18 , C23C22/20 , C23C22/22 , H01F1/147
摘要： The present invention relates to an electrical steel sheet and a coating liquid for electrical steel sheets; and the purpose of the present invention is to provide an electrical steel sheet which has more excellent heat resistance, corrosion resistance and appearance without containing chromium, and which exhibits excellent insulating properties even after stress relief annealing performed at temperatures higher than ever before, and a coating liquid for achieving this electrical steel sheet. An electrical steel sheet according to the present invention is mainly composed of a metal phosphate and fine plate-like inorganic compound particles, secondary particles of which have an average particle diameter of from 0.05 µm to 5 µm (inclusive) and a specific surface area of 1-80 m 2 /g, and primary particles of which have an aspect ratio of 50-1,000. The content of the fine plate-like inorganic compound particles is from 0.1 part by mass to 20 parts by mass (inclusive) relative to 100 parts by mass of the metal phosphate; and each of the fine plate-like inorganic compound particles has an insulating coating on the surface, said coating containing no chromium.
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公开(公告)号：EP4130304A1
公开(公告)日：2023-02-08
申请号：EP20928444.7
申请日：2020-04-02
摘要： A chemical composition of a base metal of a non-oriented electrical steel sheet contains, by mass%, C: 0.0050% or less, Si: 3.8% to 5.0%, Mn: exceeding 0.2% and less than 2.0%, P: 0.030% or less, S: 0.0030% or less, Al: 0.005% or more and less than 0.050%, N: 0.0005% to 0.0030%, Ti: less than 0.0050%, Nb: less than 0.0050%, Zr: less than 0.0050%, V: less than 0.0050%, Cu: less than 0.20%, Ni: less than 0.50%, Sn: 0% to 0.10%, Sb: 0% to 0.10%, a remainder: Fe and impurities. [Si + 0.5 × Mn ≥ 4.3] is satisfied and the average grain size of the base metal is in a range of 10 to 80 µm.
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6.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：EP4033006A1
公开(公告)日：2022-07-27
申请号：EP20865827.8
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 metal phosphate contains at least aluminum as a metallic element, the organic resin has an SP value being within a range of 18.0 (MPa) 0.5 or more to less than 24.0 (MPa) 0.5 , the water-soluble organic compound has an SP value being within a range of 19.0 (MPa) 0.5 or more to less than 35.0 (MPa) 0.5 , and when measurement by X-ray diffractometry is performed on the insulating coating film, a degree of crystallinity of aluminum phosphate calculated from a peak from the metal phosphate is within a range of 0.5 to 5.0%.
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