发明名称 |
GRAIN-ORIENTED EELCTRICAL STEEL SHEET AND PRODUCING METHOD THEREFOR |
摘要 |
A grain-oriented electrical steel sheet has a tension film that does not include chromium. In the present invention, the tension film, including a phosphate and silica as constituents, includes a manganese compound and a potassium compound. The mole ratio K/Mn of potassium to manganese in the film is set to a certain range. However, the manganese described herein does not refer to manganese derived from a manganese phosphate included in raw materials of the film. The film can be produced by preparing a coating solution by adding a compound, which includes the phosphate and the silica and also includes the potassium and the manganese, and applying the coating solution on a grain-oriented electrical steel sheet after final annealing is completed, followed by drying and baking. |
申请公布号 |
EP2264220(A1) |
申请公布日期 |
2010.12.22 |
申请号 |
EP20090728022 |
申请日期 |
2009.03.30 |
申请人 |
NIPPON STEEL CORPORATION |
发明人 |
TAKAHASHI, FUMIAKI;TAKEDA, KAZUTOSHI;FUJII, HIROYASU;YAMAZAKI, SHUICHI;NATORI, YOSHIAKI |
分类号 |
C23C22/00;C21D9/46;C23C22/16;H01F1/16;H01F1/18 |
主分类号 |
C23C22/00 |
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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