发明名称 |
ORIENTATED ELECTROMAGNETIC STEEL SHEET AND MANUFACTURING METHOD FOR SAME |
摘要 |
A silicon steel sheet (1) containing Si is cold-rolled. Next, a decarburization annealing (3) of the silicon steel sheet (1) is performed so as to cause a primary recrystallization. Next, the silicon steel sheet (1) is coiled so as to obtain a steel sheet coil (31). Next, an annealing (6) of the steel sheet coil (31) is performed through batch processing so as to cause a secondary recrystallization. Next, the steel sheet coil (31) is uncoiled and flattened. Between the cold-rolling and the obtaining the steel sheet coil (31), a laser beam is irradiated a plurality of times at predetermined intervals on a surface of the silicon steel sheet (1) from one end to the other end of the silicon steel sheet (1) along a sheet width direction (2). When the secondary recrystallization is caused, grain boundaries passing from a front surface to a rear surface of the silicon steel sheet (1) along paths of the laser beams are generated. |
申请公布号 |
EP2599883(A1) |
申请公布日期 |
2013.06.05 |
申请号 |
EP20100855300 |
申请日期 |
2010.07.28 |
申请人 |
NIPPON STEEL & SUMITOMO METAL CORPORATION |
发明人 |
SAKAI, TATSUHIKO;HIRANO, KOJI;ARAI, SATOSHI;USHIGAMI, YOSHIYUKI |
分类号 |
C21D9/46;C21D8/02;C21D8/12;C21D10/00;C22C38/00;C22C38/34;H01F1/01;H01F1/16 |
主分类号 |
C21D9/46 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|