发明授权
- 专利标题： Method for production and apparatus for production of grain-oriented electrical steel sheet excellent in magnetic properties
- 专利标题（中）： 磁性能优异的方向性电磁钢板的制造方法和制造装置
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申请号： US12084352申请日： 2006-08-29
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公开(公告)号： US07883586B2公开(公告)日： 2011-02-08
- 发明人: Tatsuhiko Sakai , Hideyuki Hamamura
- 申请人： Tatsuhiko Sakai , Hideyuki Hamamura
- 申请人地址： JP Tokyo
- 专利权人： Nippon Steel Corporation
- 当前专利权人： Nippon Steel Corporation
- 当前专利权人地址： JP Tokyo
- 代理机构： Kenyon & Kenyon LLP
- 优先权： JP2005-318656 20051101
- 国际申请： PCT/JP2006/317402 WO 20060829
- 国际公布： WO2007/052406 WO 20070510
- 主分类号： H01F1/04
- IPC分类号： H01F1/04 ; H01F1/00
摘要：
Technology scanning and irradiating grain-oriented electrical steel sheet moving in a rolling direction at a speed Vl with an elliptical spot formed by a laser beam in the width direction at Vc to improve the core loss of the grain-oriented electrical steel sheet, which adjusts the angle θs formed by the scan direction of the elliptical beam and the long axis of the ellipse based on the equation θs=tan−1(Vl/Vc) and which constructs the system for adjusting the θs by an optical system for laser irradiation comprised of a cylindrical lens telescope, scan mirror, and fθ lens arranged in that order, a system for changing the angle of the cylindrical lens telescope with respect to the scan direction of the scan mirror, and a system for changing the distance between lenses.