发明名称 |
GRAIN-ORIENTED ELECTROMAGNETIC STEEL SHEET AND MANUFACTURING METHOD FOR SAME |
摘要 |
When manufacturing a grain-oriented electromagnetic steel sheet provided with a forsterite film and tension coating on the surface thereof according to the present invention: (1) the Cr content of the grain-oriented electromagnetic steel sheet is restricted to no more than 0.1 mass%; (2) the oxygen coating weight of the forsterite film coating amount is no less than 3.0g/m2, and the thickness of the anchor portion embedded in the base steel portion of the grain-oriented electromagnetic steel sheet is no more than 1.5 µm; and (3) for a test piece with a length of 280mm, when the test piece has the forsterite film on only one surface, the warpage of the steel sheet is at least 10mm, and when the test piece has the forsterite film and tension coating on only the said surface, the warpage of the steel sheet is at least 20mm. Thus, by mitigating iron loss in the grain-oriented electromagnetic steel by controlling magnetic domain structure through laser irradiation, it is possible to obtain a grain-oriented electromagnetic steel sheet with a greater capacity to mitigate iron loss, and also an advantageous method for manufacturing the same. |
申请公布号 |
WO2012001953(A1) |
申请公布日期 |
2012.01.05 |
申请号 |
WO2011JP03685 |
申请日期 |
2011.06.28 |
申请人 |
JFE STEEL CORPORATION;YAMAGUCHI, HIROI;TODA, HIROAKI;OMURA, TAKESHI;OKABE, SEIJI |
发明人 |
YAMAGUCHI, HIROI;TODA, HIROAKI;OMURA, TAKESHI;OKABE, SEIJI |
分类号 |
C22C38/00;B21B3/02;C21D8/12;C21D9/46;C22C38/18;C22C38/60;C23C22/00;H01F1/16;H01F1/18 |
主分类号 |
C22C38/00 |
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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