发明名称 |
PROCESS FOR PRODUCING NONORIENTED SILICON STEEL SHEET HAVING EXCELLENT MAGNETIC PROPERTIES. |
摘要 |
<p>A process for producing nonoriented silicon steel sheet having excellent magnetic properties by hot direct rolling, which comprises conducting hot direct rolling of continuously cast slab of silicon steel of a specified composition without heat retention or soaking to depress precipitation of AlN except for unavoidably precipitated AlN in the hot rolling step, providing a stand-by time between the rough rolling step and the finish rolling step to introduce nuclei for precipitation of AlN, and annealing the hot-rolled sheet to precipitate uniform and coarse AlN, thus enabling highly uniform and good ferrite grains to grow upon recrystallization and annealing.</p> |
申请公布号 |
EP0357800(A1) |
申请公布日期 |
1990.03.14 |
申请号 |
EP19890903274 |
申请日期 |
1989.03.03 |
申请人 |
NKK CORPORATION |
发明人 |
NISHIMOTO, AKIHIKO NKK CORPORATION-NAI;HOSOYA, YOSHIHIRO NKK CORPORATION-NAI;TOMITA, KUNIKAZU NKK CORPORATION-NAI;URABE, TOSHIAKI NKK CORPORATION-NAI;JITSUKAWA, MASAHARU NKK CORPORATION-NAI |
分类号 |
C21D8/12;C22C38/00;C22C38/06 |
主分类号 |
C21D8/12 |
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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