US 12,378,623 B2
Cu-containing non-oriented electrical steel sheet and manufacturing method therefor
Feng Zhang, Shanghai (CN); Bo Wang, Shanghai (CN); Kanyi Shen, Shanghai (CN); Baojun Liu, Shanghai (CN); Guobao Li, Shanghai (CN); and Shuangjie Chu, Shanghai (CN)
Assigned to BAOSHAN IRON & STEEL CO., LTD, Shanghai (CN)
Appl. No. 17/636,776
Filed by BAOSHAN IRON & STEEL CO., LTD, Shanghai (CN)
PCT Filed Aug. 26, 2020, PCT No. PCT/CN2020/111406
§ 371(c)(1), (2) Date Feb. 18, 2022,
PCT Pub. No. WO2021/037064, PCT Pub. Date Mar. 4, 2021.
Claims priority of application No. 201910791206.3 (CN), filed on Aug. 26, 2019.
Prior Publication US 2024/0011112 A1, Jan. 11, 2024
Int. Cl. C21D 9/46 (2006.01); C21D 6/00 (2006.01); C21D 8/12 (2006.01); C22C 33/04 (2006.01); C22C 38/00 (2006.01); C22C 38/02 (2006.01); C22C 38/04 (2006.01); C22C 38/06 (2006.01); C22C 38/16 (2006.01); H01F 1/147 (2006.01)
CPC C21D 9/46 (2013.01) [C21D 6/005 (2013.01); C21D 6/008 (2013.01); C21D 8/1222 (2013.01); C21D 8/1233 (2013.01); C21D 8/1261 (2013.01); C21D 8/1283 (2013.01); C22C 33/04 (2013.01); C22C 38/001 (2013.01); C22C 38/002 (2013.01); C22C 38/004 (2013.01); C22C 38/02 (2013.01); C22C 38/04 (2013.01); C22C 38/06 (2013.01); C22C 38/16 (2013.01); H01F 1/14791 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A Cu-containing non-oriented electrical steel plate, comprising the following chemical elements in percentage by mass:
0<C≤0.003%; Si: 0.1-2.0%; Mn: 0.1-0.55%; S: 0-0.004%; Cu: 0.003-0.2%; Al: 0.1-1.0%; and the balance being Fe and inevitable impurities;
wherein the Cu-containing non-oriented electrical steel plate has sulfide inclusions, and the sulfide inclusions are in the shape of sphere or spheroid, and the proportion of the sulfide inclusions having a size of 0.2-1.0 μm≥75%.