发明名称 |
Grain-oriented electrical steel sheet excellent in magnetic properties and method for producing the same |
摘要 |
A low core loss grain-oriented electrical steel sheet that does not have a significant deterioration in a magnetic flux density and a decrease of a space factor, and which may withstand stress-relieving annealing is provided. Melted and re-solidified layers can be formed on either or both of the surfaces of the grain-oriented electrical steel sheet that extend in a direction that is perpendicular to the rolling direction (e.g., in the direction of the width thereof), at a cyclic interval of not less than approximately 2 mm to less than approximately 5 mm in the rolling direction. The melted and re-solidified layers may be provided on each surface of the grain-oriented electrical steel sheet, and can have an aspect ratio that is a ratio of the depth to the width of the melted and re-solidified layer of not less than approximately 0.20 and a depth of not less than approximately 15 mum. In addition, the melted and re-solidified layers can be formed by using a laser.
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申请公布号 |
US2004040629(A1) |
申请公布日期 |
2004.03.04 |
申请号 |
US20030448754 |
申请日期 |
2003.05.30 |
申请人 |
HAMAMURA HIDEYUKI;SAKAI TATSUHIKO;HAMADA NAOYA |
发明人 |
HAMAMURA HIDEYUKI;SAKAI TATSUHIKO;HAMADA NAOYA |
分类号 |
C21D8/12;H01F1/16;(IPC1-7):H01F1/16 |
主分类号 |
C21D8/12 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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