发明授权
US4897131A Grain-oriented electrical steel sheet having improved glass film
properties and low watt loss
失效
具有改善的玻璃膜性能和低瓦特损耗的晶粒取向电工钢板
- 专利标题： Grain-oriented electrical steel sheet having improved glass film properties and low watt loss
- 专利标题（中）： 具有改善的玻璃膜性能和低瓦特损耗的晶粒取向电工钢板
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申请号： US938648申请日： 1986-12-05
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公开(公告)号： US4897131A公开(公告)日： 1990-01-30
- 发明人: Toshiya Wada , Osamu Tanaka , Toshihiko Takata , Kunihide Takashima , Hiromichi Yasumoto
- 申请人： Toshiya Wada , Osamu Tanaka , Toshihiko Takata , Kunihide Takashima , Hiromichi Yasumoto
- 申请人地址： JPX 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： JPX Tokyo
- 优先权： JPX60-273421 19851206; JPX60-292134 19851226; JPX60-292135 19851226; JPX60-292136 19851226; JPX60-293281 19851227; JPX61-240182 19861011; JPX61-240183 19861011
- 主分类号： C21D3/04
- IPC分类号： C21D3/04 ; C21D8/12 ; H01F1/147
摘要：
The adhesiveness of a glass film and watt loss of a grain-oriented electrical steel sheet is improved by partially protruding the glass film into the steel sheet part thereof. To attain the partial protrusion, the steel sheet is subjected, prior or subsequent to decarburization annealing, to a treatment of the surface thereof to form unevenness, by a mechanical device, e.g., brush rolling, buff polishing, marking-off, sand papering, and grinding.
公开/授权文献
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