US 12,168,809 B2
Hot-rolled steel sheet for non-oriented electrical steel sheet, non-oriented electrical steel sheet, and method for manufacturing same
Yoshihiro Arita, Tokyo (JP); Takeru Ichie, Tokyo (JP); and Fuminobu Murakami, Tokyo (JP)
Assigned to NIPPON STEEL CORPORATION, Tokyo (JP)
Appl. No. 17/797,384
Filed by NIPPON STEEL CORPORATION, Tokyo (JP)
PCT Filed Feb. 19, 2021, PCT No. PCT/JP2021/006348
§ 371(c)(1), (2) Date Aug. 3, 2022,
PCT Pub. No. WO2021/167065, PCT Pub. Date Aug. 26, 2021.
Claims priority of application No. 2020-027000 (JP), filed on Feb. 20, 2020.
Prior Publication US 2023/0063410 A1, Mar. 2, 2023
Int. Cl. C21D 8/12 (2006.01); C21D 9/46 (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); C23G 1/08 (2006.01)
CPC C21D 8/1222 (2013.01) [C21D 8/1233 (2013.01); C21D 8/1272 (2013.01); C21D 9/46 (2013.01); C22C 38/004 (2013.01); C22C 38/008 (2013.01); C22C 38/02 (2013.01); C22C 38/04 (2013.01); C22C 38/06 (2013.01); C22C 38/16 (2013.01); C23G 1/081 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A hot-rolled steel sheet for a non-oriented electrical steel sheet comprising, by mass %:
C: 0.0050% or less;
Si: 0.5% or more and 3.5% or less;
Mn: 0.1% or more and 1.5% or less;
Al: 0.1% or more and 1.5% or less;
Cu: 0.010% or more and 0.10% or less;
Sn: 0.010% or more and 0.20% or less; and
a remainder including Fe and impurities,
wherein the hot-rolled steel sheet has a Cu concentration peak value of 0.12% or more in a range from a surface thereof to a depth of 10 μm.