| 发明名称 |
Method for annealing a core blank used in electric machinery and devices. |
| 摘要 |
<p>The present invention relates to a method for annealing a core blank (1) of a transformer or the like so as to relieve the stress generated in the electrical steel sheet sections due to blanking.</p><p>The present invention is an improvement over the conventional resistance or gas-heating method in the light of heating efficiency and time and is characterized by induction-heating (21, 22) a core blank (1) at a power input range of from 0.5 to 3 kW/kg of the core blank (1). This range attains a small variation in the shape of a core blank (1) due to induction-heating (21, 22).</p> |
| 申请公布号 |
EP0130695(A2) |
申请公布日期 |
1985.01.09 |
| 申请号 |
EP19840303651 |
申请日期 |
1984.05.31 |
| 申请人 |
MITSUI HIGH-TEC, INC.;NIPPON STEEL CORPORATION |
发明人 |
KOSHIISHI, HIROMICHI;EGUCHI, SHIGEKI;SAKAMOTO, HISAHUMI;KURAMASU, HISAYOSHI |
| 分类号 |
C21D1/42;C21D9/00;C21D9/46;H01F1/16;(IPC1-7):C21D8/12;C21D1/30 |
主分类号 |
C21D1/42 |
| 代理机构 |
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| 主权项 |
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