发明名称 |
GRAIN-ORIENTED ELECTRICAL STEEL SHEET HAVING STABLE MAGNETIC PROPERTIES RESISTANT TO STRESS-RELIEF ANNEALING, AND METHOD AND APPARATUS FOR PRODUCING THE SAME |
摘要 |
A grain-oriented electrical steel sheet having a low watt loss after stress relief annealing is proposed. The steel sheet, which is final texture annealed, and to which tension is imparted, has a number of recessed parts on the surface thereof forming indentations into the steel sheet body having a depth in the range of from 0.01 to 0.1 mm. The recessed parts are filled with a composition having a coefficient of thermal expansion smaller than that of the steel sheet body. From the recessed parts and the composition the magnetic domains are subdivided. |
申请公布号 |
SE8505295(D0) |
申请公布日期 |
1985.11.08 |
申请号 |
SE19850005295 |
申请日期 |
1985.11.08 |
申请人 |
NIPPON STEEL CORP |
发明人 |
1)H * KOBAYASHI;2)M * NAKAMURA;3)K * HIROSE;4)T * TSUKADA;5)H * YAMASHITA |
分类号 |
B23P15/00;C21D8/12;C23C22/74;H01F1/16;(IPC1-7):C21D/ |
主分类号 |
B23P15/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|