发明申请
- 专利标题: DEVICE TO IMPROVE IRON LOSS PROPERTIES OF GRAIN ORIENTED ELECTRICAL STEEL SHEET AND METHOD FOR IMPROVING IRON LOSS PROPERTIES OF GRAIN ORIENTED ELECTRICAL STEEL SHEET
- 专利标题(中): 用于改善面向电动钢板的铁损性能的装置以及用于改善面向导电电工钢板的铁损性能的方法
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申请号: US13806926申请日: 2011-06-29
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公开(公告)号: US20130161301A1公开(公告)日: 2013-06-27
- 发明人: Seiji Okabe , Hiroi Yamaguchi , Takeshi Omura
- 申请人: Seiji Okabe , Hiroi Yamaguchi , Takeshi Omura
- 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
- 优先权: JP2010-150173 20100630
- 国际申请: PCT/JP2011/003714 WO 20110629
- 主分类号: B23K26/00
- IPC分类号: B23K26/00
摘要:
A device reduces dust for safely preventing laser-irradiation capacity from decreasing due to contamination and reliably reducing iron loss of a grain oriented electrical steel sheet. The device improves iron loss properties of a grain oriented electrical steel sheet by irradiating its surface with laser to reduce iron loss, wherein, distance between a laser beam emission port and a laser irradiation point is L (mm); laser irradiation angle formed by a line linking the emission port and the irradiation point with respect to a direction vertical to the sheet is θ (°); and L≧50, the emission port is positioned such that L and θ satisfy: 60−0.3L≦θ≦60 when L≦100 40−0.1L≦θ≦60 when 100 400.
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