发明名称 |
MANUFACTURING METHOD FOR GRAIN-ORIENTED ELECTROMAGNETIC STEEL SHEET |
摘要 |
<p>Hot rolling is performed on a steel with a predetermined composition containing Ti: 0.0020 mass% to 0.010 mass% and/or Cu: 0.010 mass% to 0.50 mass% to obtain a hot-rolled steel sheet. Annealing is performed on the hot-rolled steel sheet to obtain an annealed steel sheet. Cold rolling is performed on the annealed steel sheet to obtain a cold-rolled steel sheet. Decarburization annealing and nitridation annealing are performed on the cold-rolled steel sheet to obtain a decarburized nitrided steel sheet. Then, finish annealing is performed on the decarburized nitrided steel sheet. When obtaining the decarburized nitrided steel sheet, heating on the cold-rolled steel sheet is started in a decarburizing and nitriding atmosphere, then first annealing is performed at a first temperature within a predetermined range, and then second annealing is performed at a second temperature within a predetermined range.</p> |
申请公布号 |
EP2537946(A4) |
申请公布日期 |
2014.05.07 |
申请号 |
EP20110744741 |
申请日期 |
2011.02.18 |
申请人 |
NIPPON STEEL & SUMITOMO METAL CORPORATION |
发明人 |
MURAKAMI, KENICHI;USHIGAMI, YOSHIYUKI |
分类号 |
C21D8/12;C21D3/04;C21D9/46;C22C38/00;C22C38/02;C22C38/04;C22C38/06;C22C38/16;C22C38/34;C23C8/02;C23C8/80;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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