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公开(公告)号：EP3950972A1
公开(公告)日：2022-02-09
申请号：EP20784220.4
申请日：2020-04-01
摘要： This electrical steel sheet contains, as a chemical composition, by mass%, C: 0.0035% or less, Si: 2.00% to 3.50%, Mn: 2.00% to 5.00%, P: 0.050% or less, S: 0.0070% or less, Al: 0.15% or less, N: 0.0030% or less, Ni: 0% to 1.00%, Cu: 0% to 0.10%, and a remainder: Fe and impurities, in which an X-ray random intensity ratio in a {100} crystal orientation on a sheet surface is 15.0 to 50.0, and magnetic flux densities in 0°, 22.5°, and 45° directions from a rolling direction each satisfy [1.005 × (B 50 (0°) + B 50 (45°)) / 2 ≤ B 50 (22.5°)].
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公开(公告)号：EP2495345B1
公开(公告)日：2020-08-26
申请号：EP10826786.5
申请日：2010-10-27
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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：EP4134456A1
公开(公告)日：2023-02-15
申请号：EP21783908.3
申请日：2021-03-24
摘要： A non-oriented electrical steel sheet has a predetermined chemical composition. The chemical composition satisfies (2 × [Mn] + 2.5 × [Ni] + [Cu]) - ([Si] + 2 × [sol.Al] + 4 × [P]) ≥ 1.50%. In a case where Ahkl-uvw represents the area ratio of crystal grains in an {hkl} orientation to the entire visual field when a plane at a depth of 1/2 of a sheet thickness from a surface parallel to a rolled surface is measured by SEM-EBSD, A411-011 is 15.0% or more, and the average grain size is 50 µm to 150 µm.
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公开(公告)号：EP4060060A1
公开(公告)日：2022-09-21
申请号：EP20887823.1
申请日：2020-11-13
摘要： What is provided is a non-oriented electrical steel sheet having a chemical composition in which, by mass%, C: 0.010% or less, Si: 1.50% to 4.00%, sol. Al: 0.0001% to 1.0%, S: 0.010% or less, N: 0.010% or less and one or a plurality of elements selected from the group consisting of Mn, Ni, Co, Pt, Pb, Cu and Au: 2.50% to 5.00% in total with a remainder including Fe and impurities, in which a recrystallization rate is 1% to 99% in a metallographic structure, a sheet thickness is 0.50 mm or less, and, in the case of measuring a magnetic flux density B50 after annealing the non-oriented electrical steel sheet at 800°C for two hours, a magnetic flux density B50 in a 45° direction with respect to a rolling direction is 1.75 T or more.
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公开(公告)号：EP4060870A1
公开(公告)日：2022-09-21
申请号：EP20886750.7
申请日：2020-11-13
摘要： The present invention is a stator core (21) including a plurality of split cores (30), in which the plurality of split cores (30) are configured by laminating core pieces (40) made of an electrical steel sheet, the electrical steel sheet is a predetermined electrical steel sheet, and, in the core pieces (40) of at least one split core (30) in the plurality of split cores (30), the radial directions of teeth (41) and extension directions of core backs (42) are all along a direction in which magnetic characteristics of the electrical steel sheet are excellent.
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公开(公告)号：EP4060869A1
公开(公告)日：2022-09-21
申请号：EP20886752.3
申请日：2020-11-13
发明人： OHSUGI, Yasuo , TOMITA, Miho , MURAKAWA, Tesshu
摘要： The present invention is a stator core having a plurality of laminated electrical steel sheets, in which, among a plurality of teeth (121a to 121p) of the stator core, a width of teeth along a direction in which magnetic characteristics are excellent may be narrower than a width of teeth along a direction in which the magnetic characteristics are poor.
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公开(公告)号：EP4060061A1
公开(公告)日：2022-09-21
申请号：EP20887897.5
申请日：2020-11-13
摘要： What is provided is a non-oriented electrical steel sheet having a chemical composition in which, by mass%, C: 0.010% or less, Si: 1.50% to 4.00%, sol. Al: 0.0001% to 1.0%, S: 0.010% or less, N: 0.010% or less, one or a plurality of elements selected from the group consisting of Mn, Ni, Co, Pt, Pb, Cu and Au: 2.50% to 5.00% in total are contained and a remainder includes Fe and impurities, in which a sheet thickness is 0.50 mm or less, and, in an arbitrary cross section, when an area ratio of {100} crystal grains is indicated by Sac, an area ratio of {110} crystal grains is indicated by Sag, and an area ratio of the {100} crystal grains in a region of up to 20% from a side where a KAM value is high is indicated by Sbc, Sac > Sbc > Sag and 0.05 > Sag are satisfied.
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10.发明公开
公开(公告)号：EP3871799A1
公开(公告)日：2021-09-01
申请号：EP19876062.1
申请日：2019-10-24
发明人： FUJIMURA, Hiroshi , KANO, Satoshi , TOMITA, Miho
IPC分类号： B21D28/02 , C21D8/12 , C21D9/00 , C21D9/46 , C22C38/00 , C22C38/14 , C22C38/60 , H01F41/02 , H01F1/147
摘要： Provided are a non-oriented electrical steel sheet with which it is possible to improve steel sheet transferability even when punching is performed successively at high speed, and a method of manufacturing a stacked core using the same. The non-oriented electrical steel sheet contains, by mass percent, Si: 2.0 to 5.0%, Mn: 0.4 to 5.0%, Al ≤ 3.0%, C: 0.0008 to 0.0100%, N ≤ 0.0030%, S ≤ 0.0030%, and Ti ≤ 0.0060%, wherein the product of the contents of Mn and C is 0.004 to 0.05 mass% 2 , the yield strength in rolling direction is more than or equal to 600 MPa, and the Young's modulus is more than or equal to 200 GPa. In the method of manufacturing a stacked core, when manufacturing a stacked core using a progressive die, the steel sheet transfer speed V (m/s) satisfies expression (1). V : V MIN to V MAX V MAX = 1 / 25 √ t 2 × E × YS V MIN = 1 / 25 √ t 2 × 120000 t: Steel sheet thickness (mm), E: Young's ratio (GPa), YS: Yield strength (MPa)
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