发明名称 |
Process for the production of grain-oriented electric quality sheet with low remagnetization loss and high polarization |
摘要 |
A process for the production of grain-oriented electric quality sheet by melting a silicon steel and casting the melt continuously into a strand having a thickness of 25-100 mm. During solidification the strand is cooled to a temperature above 700° C. and divided into thin slabs. The thin slabs then pass through an equalization furnace standing in line where they are reheated to a temperature <=1170° C. and continuously rolled in a multi-stand hot rolling mill to give hot strip having a thickness of <=3.0 mm. The first shaping pass is performed at a temperature in the rolling stock up to 1150° C. The reduction in thickness is at least 20%. The hot strip is cold rolled in one or more stages with recrystallizing intermediate annealing to a final thickness in the range of 0.15-0.50 mm. The cold strip is then annealed with recrystallization and decarburization, furnished with a predominantly MgO-containing annealing separator and given a final annealing for imprinting a Goss texture. The strip is then coated with an electric insulation and given a stress-free annealing.
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申请公布号 |
US6524400(B1) |
申请公布日期 |
2003.02.25 |
申请号 |
US20000529339 |
申请日期 |
2000.06.06 |
申请人 |
THYSSEN KRUPP STAHL AG |
发明人 |
PIRCHER HANS;KAWALLA RUDOLF;ESPENHAHN MANFRED;BOETTCHER ANDREAS;GUENTHER KLAUS;HUNEUS HANS;WUPPERMANN CARL-DIETER |
分类号 |
B22D11/00;B22D11/124;C21D8/12;C22C38/00;C22C38/16;C22C38/60;(IPC1-7):H01F1/04 |
主分类号 |
B22D11/00 |
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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