公开(公告)号：US20150357101A1

公开(公告)日：2015-12-10

申请号：US14761538

申请日：2013-11-21

Applicant: JFE STEEL CORPORATION

Inventor： Yoshiaki ZAIZEN ,  Yoshihiko ODA ,  Hiroaki TODA ,  Kazuhiro HANAZAWA

IPC: H01F1/147 ,  C21D6/00 ,  C22C38/02 ,  H01F41/02 ,  C22C38/06 ,  C22C38/00 ,  C22C38/60 ,  H01F1/16 ,  C21D8/12 ,  C22C38/04

CPC classification number: H01F1/14775 ,  C21D6/005 ,  C21D6/008 ,  C21D8/12 ,  C21D8/1222 ,  C21D8/1233 ,  C21D8/1244 ,  C21D8/1261 ,  C21D8/1272 ,  C21D9/46 ,  C22C38/00 ,  C22C38/001 ,  C22C38/004 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/60 ,  H01F1/16 ,  H01F41/02

Abstract: A steel slab having a chemical composition including C: not more than 0.005 mass %, Si: not more than 4 mass %, Mn: 0.03-2 mass %, P: not more than 0.2 mass %, S: not more than 0.004 mass %, Al: not more than 2 mass %, N: not more than 0.004 mass %, Se: not more than 0.0010 mass % and the balance being Fe and inevitable impurities is subjected to hot rolling, cold rolling and recrystallization annealing up to 740° C. at an average heating rate of not less than 100° C./s to produce a semi-processed non-oriented electrical steel sheet being high in the magnetic flux density and low in the iron loss after stress relief annealing.

Abstract translation: 具有C：0.005质量％以下，Si：4质量％以下，Mn：0.03〜2质量％，P：0.2质量％以下，S：0.004质量％以下的化学组成的钢坯 ％，Al：不大于2质量％，N：不大于0.004质量％，Se：不大于0.0010质量％，余量为Fe和不可避免的杂质，进行热轧，冷轧和再结晶退火至740 ℃，平均加热速度不低于100℃/秒，以产生磁通密度高的半加工无取向电工钢板，并且消除应力退火后的铁损低。