发明授权
- 专利标题: Method of manufacturing a grain-oriented electromagnetic steel sheet
- 专利标题(中): 晶粒取向电磁钢板的制造方法
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申请号: US09927030申请日: 2001-08-09
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公开(公告)号: US06444051B2公开(公告)日: 2002-09-03
- 发明人: Michiro Komatsubara , Kazuaki Tamura , Mitsumasa Kurosawa
- 申请人: Michiro Komatsubara , Kazuaki Tamura , Mitsumasa Kurosawa
- 优先权: JP10-139416 19980521; JP10-144233 19980526
- 主分类号: H01F1147
- IPC分类号: H01F1147
摘要:
A method of making a grain-oriented electromagnetic steel sheet having a low iron loss and a high magnetic flux density, from a steel slab with 0.03 to 0.095 wt % carbon, about 1.5 to 7.0 wt % Si, about 0.03 to 2.50 wt % manganese, about 0.003 to 0.040 wt % sulfur and/or selenium, about 0.0010 to 0.0070 wt % borbon, about 30 to 120 wtppm nitrogen, about 0.015 wt % or less aluminum, and about 0.010 wt % or less vanadium by subjecting the steel slab to reheating, hot rolling, rapid cooling, cold rolling, primary recrystallization annealing, coating with an annealing separator, final annealing, secondary recrystallization, and coiling.
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