发明名称 |
ELECTROMAGNETIC STEEL SHEET HAVING A HIGHLY CORROSION-RESISTANT INSULATING FILM AND A CORE FOR USE IN MOTORS OR TRANSFORMERS MADE OF THEELECTROMAGNETIC STEEL SHEET |
摘要 |
<p>An electromagnetic steel sheet having a corrosion-resistant electrically insulating film. The insulating film is formed by spraying and baking, on the steel sheet, a treating liquid containing an emulsion of fine resin particles, a reducing agent and an accelerator. The emulsion of fine resin particles exhibits a weight change peak temperature of not lower than about 400.degree.C as measured by differential thermal weight measurement conducted while raising the emulsion temperature at a constant rate of temperature rise. The emulsion also substantially resists when contacted by phosphoric acid. The reducing agent is a phosphate ion aqueous solution containing a metal. Also disclosed is a corrosion-resistant core made from the electromagnetic steel sheet.</p> |
申请公布号 |
CA2145975(C) |
申请公布日期 |
2006.05.23 |
申请号 |
CA19952145975 |
申请日期 |
1995.03.30 |
申请人 |
KAWASAKI STEEL CORPORATION |
发明人 |
KOBAYASHI, HIDEO;KOSUGE, NORIO;KOMORI, YUKA |
分类号 |
C23C22/00;C23C22/07;B05D5/12;B05D7/14;C09D5/08;C21D8/12;C23C22/74;H01F1/18;H01F27/245;H02K1/04 |
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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