发明授权
- 专利标题: Low iron loss and low noise grain-oriented electrical steel sheet and a method for producing the same
- 专利标题(中): 低铁损和低噪音晶粒取向电工钢板及其制造方法
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申请号: US10288784申请日: 2002-11-06
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公开(公告)号: US06918966B2公开(公告)日: 2005-07-19
- 发明人: Masahiro Fujikura , Satoshi Arai , Masato Mizokami , Hisashi Mogi , Takeshi Kubota
- 申请人: Masahiro Fujikura , Satoshi Arai , Masato Mizokami , Hisashi Mogi , Takeshi Kubota
- 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
- 优先权: JP2000-140395 20000512; JP2001-093616 20010328
- 主分类号: C21D8/12
- IPC分类号: C21D8/12 ; H01F1/147 ; H01F1/16
摘要:
The object of the present invention is to provide a low iron loss and low noise grain-oriented electrical steel sheet for securing both low core loss and low noise of a transformer at the same time.The present invention relates to a grain-oriented electrical steel sheet containing Si: 1.0-4.0 wt % produced by controlling, with regard to εO, which is defined as a 0-p value when a grain-oriented electrical steel sheet is magnetized up to a saturated magnetic flux density, and ε17, which is defined as the value obtained by subtracting a 0-p value at the magnetization magnetic flux density of 1.7 T from a 0-p value at a saturated magnetic flux density, εOC and ε17L, which are absolute values deviated by forming a tension film and a forsterite film, and εOL and ε17L, which are absolute values deviated by irradiating laser after the film formation, in adequate ranges respectively, and further controlling λ17, which is a 0-p value at the magnetization magnetic flux density of 1.7 T, in the most appropriate range, when measuring a 0-p value of magnetostriction vibration in the rolling direction.
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