基本信息:
- 专利标题： 一种较高磁感的高强度无取向电工钢及其制造方法
- 专利标题（英）：High-strength non-oriented electrical steel with high magnetic induction and manufacturing method thereof
- 申请号：CN201010518005.5 申请日：2010-10-25
- 公开(公告)号：CN102453838A 公开(公告)日：2012-05-16
- 发明人： 胡瞻源 , 王波 , 谢世殊 , 马爱华 , 邹亮 , 王子涛 , 朱雨华
- 申请人： 宝山钢铁股份有限公司
- 申请人地址： 上海市宝山区富锦路885号
- 专利权人： 宝山钢铁股份有限公司
- 当前专利权人： 宝山钢铁股份有限公司
- 当前专利权人地址： 上海市宝山区富锦路885号
- 代理机构： 上海开祺知识产权代理有限公司
- 代理人： 竺明
- 主分类号： C22C38/40
- IPC分类号： C22C38/40 ; C22C33/04 ; C21D8/12
High-strength non-oriented electrical steel with high magnetic induction and a manufacturing method thereof. The method comprises the following steps of: 1) smelting and casting, wherein the electrical steel comprises the following components by weight: not more than 0.0040% of C, 2.50-4.00% of Si, 0.20%-0.80% of Al, 1.0-8.0% of Cr, 0.5-5.0% of Ni, not more than 0.50% of Mn, not more than 0.30% of P, not more than 0.0020% of S, not more than 0.0030% of N, not more than 0.0030% of Ti, not more than 0.010% of Nb, not more than 0.010% of V, not more than 0.010% of C+S+N+Ti, and the balance of Fe; smelting, RH vacuum treatment, casting; 2) hot rolling; 3) normalization at a temperature of 850-950 DEG C for 0.5-3 min, slow cooling to 650-750 DEG C with a speed of 5-15 DEG C/s, rapid cooling to below 100 DEG C with a speed of 20-70 DEG C; 4) pickling and cold rolling with a total reduction rate of not less than 70%; 5) annealing at 800-1000 DEG C for 5-60 seconds, slow cooling to 650-750 DEG C with a speed of 3-10 DEG C/s, rapid cooling to below 100 DEG C with a speed of 20-70 DEG C. The method of the invention produces non-oriented electrical steel with both high strength and high-efficient magnetic properties without the increase of manufacturing difficulties.