发明公开
EP2548977A1 METHOD FOR PRODUCING DIRECTIONAL ELECTROMAGNETIC STEEL SHEET
有权
VERFAHREN ZUR HERSTELLUNG EINES DIREKTIONAL ELEKTROMAGNETISCHEN STAHLBLECHS
- 专利标题： METHOD FOR PRODUCING DIRECTIONAL ELECTROMAGNETIC STEEL SHEET
- 专利标题（中）： VERFAHREN ZUR HERSTELLUNG EINES DIREKTIONAL ELEKTROMAGNETISCHEN STAHLBLECHS
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申请号： EP11756305.6申请日： 2011-03-15
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公开(公告)号： EP2548977A1公开(公告)日： 2013-01-23
- 发明人: MURAKAMI, Kenichi , HAMA, Chie , MIZUKAMI, Kazumi , USHIGAMI, Yoshiyuki , NAKAMURA, Shuichi
- 申请人： Nippon Steel & Sumitomo Metal Corporation
- 申请人地址： 6-1, Marunouchi 2-chome Chiyoda-ku Tokyo 100-8071 JP
- 专利权人： Nippon Steel & Sumitomo Metal Corporation
- 当前专利权人： Nippon Steel & Sumitomo Metal Corporation
- 当前专利权人地址： 6-1, Marunouchi 2-chome Chiyoda-ku Tokyo 100-8071 JP
- 代理机构： Vossius & Partner
- 优先权： JP2010061298 20100317
- 国际公布： WO2011115120 20110922
- 主分类号： C21D8/12
- IPC分类号： C21D8/12 ; C22C38/00 ; C22C38/60 ; H01F1/16 ; H01F1/18
摘要：
A predetermined steel containing Te: 0.0005 mass% to 0.0050 mass% is heated to 1320°C or lower to be subjected to hot rolling, and is subjected to annealing, cold rolling, decarburization annealing, and nitridation annealing, and thereby a decarburized nitrided steel sheet is obtained. Further, an annealing separating agent is applied on the surface of the decarburized nitrided steel sheet and finish annealing is performed, and thereby a glass coating film is formed. The N content of the decarburized nitrided steel sheet is set to 0.0150 mass% to 0.0250 mass% and the relationship of 2 × [Te] + [N] ≦ 0.0300 mass% is set to be established. Note that [Te] represents the Te content and [N] represents the N content.
公开/授权文献
- EP2548977B1 METHOD FOR PRODUCING DIRECTIONAL ELECTROMAGNETIC STEEL SHEET 公开/授权日：2015-06-03
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