- 专利标题: GRAIN-ORIENTED ELECTROMAGNETIC STEEL PLATE AND PRODUCTION METHOD THEREFOR
-
申请号: EP20861748.0申请日: 2020-09-04
-
公开(公告)号: EP4026921A1公开(公告)日: 2022-07-13
- 发明人: SHINGAKI, Yukihiro , SHIMOYAMA, Yusuke , HARADA, Akifumi
- 申请人: JFE Steel Corporation
- 申请人地址: JP Tokyo 100-0011 2-3, Uchisaiwai-cho 2-chome Chiyoda-ku
- 代理机构: Grünecker Patent- und Rechtsanwälte PartG mbB
- 优先权: JP2019163264 20190906
- 国际公布: WO2021045212 20210311
- 主分类号: C21D8/12
- IPC分类号: C21D8/12 ; C22C38/00 ; C22C38/60 ; H01F1/147
摘要:
Disclosed is a grain-oriented electrical steel sheet capable of obtaining excellent magnetic properties stably over the entire coil length. A grain-oriented electrical steel sheet includes: a chemical composition containing, in mass%, C: 0.005 % or less, Si: 2.0 % to 4.5 %, and Mn: 0.01 % to 0.5 %, and, in mass ppm, N: 20 ppm or less, each of Se, Te, and O: less than 50 ppm, S: less than 30 ppm, and acid-soluble Al: less than 40 ppm, and Ti: less than 30 ppm, of which 5 ppm or more and 25 ppm or less is acid-soluble Ti, with the balance being Fe and inevitable impurities; and precipitates containing Ti and N with a grain size of 200 nm or more at a frequency of 0.05 grains/mm 2 or more.
信息查询