US 12,278,528 B2
Method for manufacturing laminated body
Shigeru Nagasugi, Fukuoka (JP); Takashi Fukumoto, Fukuoka (JP); and Jin Oda, Fukuoka (JP)
Assigned to MITSUI HIGH-TEC, INC., Fukuoka (JP)
Appl. No. 17/048,751
Filed by MITSUI HIGH-TEC, INC., Fukuoka (JP)
PCT Filed Apr. 12, 2019, PCT No. PCT/JP2019/016005
§ 371(c)(1), (2) Date Oct. 19, 2020,
PCT Pub. No. WO2019/220830, PCT Pub. Date Nov. 21, 2019.
Claims priority of application No. 2018-093054 (JP), filed on May 14, 2018.
Prior Publication US 2021/0194336 A1, Jun. 24, 2021
Int. Cl. H02K 15/02 (2025.01); B32B 15/01 (2006.01); C21D 9/00 (2006.01); H01F 41/14 (2006.01)
CPC H02K 15/02 (2013.01) [B32B 15/011 (2013.01); C21D 9/0068 (2013.01); H01F 41/14 (2013.01); H02K 2201/09 (2013.01); Y10T 29/49012 (2015.01)] 9 Claims
OG exemplary drawing
 
1. A method for manufacturing a laminated body, comprising:
repeatedly laminating electromagnetic steel plates to form a laminated body under a predetermined lamination condition;
performing an annealing process on the laminated body;
acquiring a before-annealing lamination thickness information on a thickness of the laminated body before performing the annealing process on the laminated body; and
in an occurrence that the before-annealing lamination thickness information of the laminated body does not satisfy a before-annealing criterion which is predetermined, changing a lamination condition of a following laminated body formed subsequent to the laminated body such that a before-annealing lamination thickness information of the following laminated body satisfies the before-annealing criterion, wherein
the before-annealing criterion that is predetermined is set in advance based on a relationship between before-annealing lamination thickness information and after-annealing lamination thickness information for previous laminated bodies that correspond to specified thicknesses of the previous laminated bodies before and after annealing that are acquired previously, and wherein
the following laminated body is formed by repeatedly laminating electromagnetic steel plates of the following laminated body.