发明授权
- 专利标题： Grain-oriented electrical steel sheet and process for producing the same
- 专利标题（中）： 晶粒取向电工钢板及其制造方法
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申请号： US11663751申请日： 2005-11-28
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公开(公告)号： US08177920B2公开(公告)日： 2012-05-15
- 发明人: Yukihiro Shingaki , Minoru Takashima , Tadashi Nakanishi , Takeshi Murai
- 申请人： Yukihiro Shingaki , Minoru Takashima , Tadashi Nakanishi , Takeshi Murai
- 申请人地址： JP Tokyo
- 专利权人： JFE Steel Corporation
- 当前专利权人： JFE Steel Corporation
- 当前专利权人地址： JP Tokyo
- 代理机构： Holtz, Holtz, Goodman & Chick, P.C.
- 优先权： JP2004-345604 20041130
- 国际申请： PCT/JP2005/022232 WO 20051128
- 国际公布： WO2006/059740 WO 20060608
- 主分类号： C21D8/12
- IPC分类号： C21D8/12 ; C22C38/02 ; H01F1/16 ; H01F27/245
摘要：
The present invention provides a grain-oriented electrical steel sheet produced by a method for promoting secondary recrystallization without an inhibitor, the grain-oriented electrical steel sheet including 2.0% or more and 4.5% or less of Si and 0.01% or more and 0.5% or less of Mn on a mass % basis, wherein the number of oxide particles having a diameter of 1 to 3 μm among that (oxide particles) of containing Ca and/or Mg is 400 or less per unit area (1 cm2) in a transverse cross-section perpendicular to a rolling direction. Therefore, the grain-oriented electrical steel sheet has excellent stable magnetic properties throughout the length of a coil.
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