US 11,728,076 B2
Method of producing laminated amorphous alloy ribbon holding spool and method of producing iron core
Hajime Itagaki, Tokyo (JP); Atsuhiro Noguchi, Tokyo (JP); Morifumi Kuroki, Tokyo (JP); and Makoto Sasaki, Tokyo (JP)
Assigned to Proterial, Ltd., Tokyo (JP)
Filed by Proterial, Ltd., Tokyo (JP)
Filed on Nov. 18, 2021, as Appl. No. 17/529,953.
Claims priority of application No. 2020-197913 (JP), filed on Nov. 30, 2020.
Prior Publication US 2022/0172868 A1, Jun. 2, 2022
Int. Cl. H01F 1/153 (2006.01); C22C 45/02 (2006.01); H01F 3/04 (2006.01); H01F 41/02 (2006.01)
CPC H01F 1/15308 (2013.01) [C22C 45/02 (2013.01); H01F 1/15341 (2013.01); H01F 3/04 (2013.01); H01F 41/0226 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A method of producing a laminated amorphous alloy ribbon holding spool comprising:
providing single layer amorphous alloy ribbon holding spools, each of which is wound with a single layer amorphous alloy ribbon;
unwinding the single layer amorphous alloy ribbon from each of the single layer amorphous alloy ribbon holding spools;
making the single layer amorphous alloy ribbon travel with a laser being radiated thereto, to thereby simultaneously prepare single layer amorphous alloy ribbons having laser irradiation marks formed thereon;
laminating the single layer amorphous alloy ribbons having the laser irradiation marks formed thereon, to thereby prepare a laminated amorphous alloy ribbon; and
winding up the laminated amorphous alloy ribbon on a spool.