US 11,923,115 B2
Insulating coating-attached electrical steel sheet and manufacturing method therefor
Takashi Terashima, Tokyo (JP); Masahiro Suemune, Tokyo (JP); Karin Kokufu, Tokyo (JP); and Toshito Takamiya, Tokyo (JP)
Assigned to JFE STEEL CORPORATION, Tokyo (JP)
Appl. No. 16/967,945
Filed by JFE STEEL CORPORATION, Tokyo (JP)
PCT Filed Jan. 21, 2019, PCT No. PCT/JP2019/001690
§ 371(c)(1), (2) Date Aug. 6, 2020,
PCT Pub. No. WO2019/155858, PCT Pub. Date Aug. 15, 2019.
Claims priority of application No. 2018-018756 (JP), filed on Feb. 6, 2018.
Prior Publication US 2021/0035718 A1, Feb. 4, 2021
Int. Cl. B32B 15/04 (2006.01); B32B 17/06 (2006.01); C23C 22/82 (2006.01); C23C 28/04 (2006.01); H01F 1/147 (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); C23C 18/12 (2006.01)
CPC H01F 1/147 (2013.01) [C23C 22/82 (2013.01); C23C 28/04 (2013.01); C22C 38/001 (2013.01); C22C 38/02 (2013.01); C22C 38/04 (2013.01); C22C 38/06 (2013.01); C22C 38/16 (2013.01); C22C 2202/02 (2013.01); C23C 18/1212 (2013.01); C23C 18/1241 (2013.01); C23C 18/127 (2013.01)] 8 Claims
OG exemplary drawing
 
1. An insulating coating-attached electrical steel sheet comprising:
the steel sheet, and
on at least one surface of the steel sheet, an insulating coating including an insulating tensile coating layer A, wherein:
a tension applied to the steel sheet by an insulating tensile coating layer having a coating weight of M/2 from a surface of the insulating tensile coating layer A is 0.80×σA or more, where M is a weight of the insulating tensile coating layer A, and σA is a tension applied to the steel sheet by the insulating tensile coating layer A.