US 12,283,845 B2
Non-oriented electrical steel sheet, segmented stator, and rotating electrical machine
Yoshiaki Natori, Tokyo (JP); Hiroyoshi Yashiki, Tokyo (JP); and Miho Tomita, Tokyo (JP)
Assigned to NIPPON STEEL CORPORATION, Tokyo (JP)
Appl. No. 17/311,821
Filed by NIPPON STEEL CORPORATION, Tokyo (JP)
PCT Filed Jan. 17, 2020, PCT No. PCT/JP2020/001536
§ 371(c)(1), (2) Date Jun. 8, 2021,
PCT Pub. No. WO2020/149405, PCT Pub. Date Jul. 23, 2020.
Claims priority of application No. 2019-006447 (JP), filed on Jan. 17, 2019.
Prior Publication US 2022/0021248 A1, Jan. 20, 2022
Int. Cl. H02K 1/02 (2006.01); C22C 38/00 (2006.01); C22C 38/02 (2006.01); C22C 38/04 (2006.01); C22C 38/06 (2006.01); C22C 38/20 (2006.01); C22C 38/28 (2006.01); C22C 38/34 (2006.01); C22C 38/42 (2006.01); C22C 38/50 (2006.01); C22C 38/58 (2006.01); H02K 1/12 (2006.01); H02K 1/22 (2006.01); H02K 5/04 (2006.01)
CPC H02K 1/02 (2013.01) [C22C 38/002 (2013.01); C22C 38/005 (2013.01); C22C 38/008 (2013.01); C22C 38/02 (2013.01); C22C 38/04 (2013.01); C22C 38/06 (2013.01); C22C 38/20 (2013.01); C22C 38/28 (2013.01); C22C 38/34 (2013.01); C22C 38/42 (2013.01); C22C 38/50 (2013.01); C22C 38/58 (2013.01); H02K 1/12 (2013.01); H02K 1/22 (2013.01); H02K 5/04 (2013.01); C22C 2202/02 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A non-oriented electrical steel sheet, comprising:
a chemical composition containing, in terms of % by mass, C: 0.0015% or less; and
Si: 2.5 to 4.0%,
wherein an average crystal grain size is 10 to 40 μm, and
an internal oxidation layer having a thickness of 0.5 to 3.0 μm from a surface in a sheet thickness direction is present.