发明公开
- 专利标题: GRAIN-ORIENTED MAGNETIC STEEL SHEET
- 专利标题(中): KORNORIENTIERTES MAGNETSTAHLBLECH
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申请号: EP10804595.6申请日: 2010-07-30
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公开(公告)号: EP2460902A1公开(公告)日: 2012-06-06
- 发明人: IMAMURA, Takeshi , SHINGAKI, Yukihiro , MURAKI, Mineo
- 申请人: JFE Steel Corporation
- 申请人地址: 2-3, Uchisaiwaicho 2-chome Chiyoda-ku Tokyo 100-0011 JP
- 专利权人: JFE Steel Corporation
- 当前专利权人: JFE Steel Corporation
- 当前专利权人地址: 2-3, Uchisaiwaicho 2-chome Chiyoda-ku Tokyo 100-0011 JP
- 代理机构: Grünecker, Kinkeldey, Stockmair & Schwanhäusser
- 优先权: JP2009179494 20090731
- 国际公布: WO2011013858 20110203
- 主分类号: C22C38/00
- IPC分类号: C22C38/00 ; B21B3/02 ; C22C38/14 ; C22C38/60 ; H01F1/16 ; C21D8/12 ; C21D9/46
摘要:
An electrical steel sheet is provided that contains, as components, by mass%, 0.005% or less of C, 1.0% to 8.0% of Si, and 0.005% to 1.0% of Mn; one or more selected from Nb, Ta, V, and Zr such that a total content thereof is 10 to 50 ppm; and the balance being Fe and unavoidable impurities, wherein at least 10% of the content of Nb, Ta, V, and Zr is in the form of precipitates; the precipitates have an average diameter (equivalent circle diameter) of 0.02 to 3 µm; and secondary recrystallized grains of the steel sheet have an average grain size of 5 mm or more. Thus, an electrical steel sheet is provided in which degradation of magnetic characteristics can be reduced in the case of the sheet being sheared, even when the sheet is used for a large transformer having a size of several meters.
公开/授权文献
- EP2460902B1 GRAIN-ORIENTED MAGNETIC STEEL SHEET 公开/授权日:2016-05-04
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