发明名称 |
PROCESS OF ALUMINIZATION OF SHEETS OF MAGNETIC STEEL WITH ORIENTED GRAINS |
摘要 |
A process of aluminizing magnetic steel sheets is disclosed. The process involves annealing a steel sheet in order to achieve partial secondary recrystallization, providing aluminum on the steel sheet, preferably by vacuum evaporation or immersion, and subjecting the steel sheet to a further heat treating step in order to diffuse the aluminum into the sheet and decrease impurities therein. Preferably, the partial secondary recrystallization anneal is performed in a neutral atmosphere such as nitrogen, while the final heat treating step is performed in a hydrogen atmosphere, and at a higher temperature than the above annealing step.
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申请公布号 |
US5123976(A) |
申请公布日期 |
1992.06.23 |
申请号 |
US19910646710 |
申请日期 |
1991.01.28 |
申请人 |
UGINE, ACIERS DE CHATILLON ET GUEUGNON |
发明人 |
BRISSONNEAU, PIERRE;LAVERNY, JEAN-LUC;PERRIER, JEAN-CLAUDE;VERDUN, JEAN |
分类号 |
C21D8/12 |
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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