US 12,264,389 B2
Fe-based amorphous alloy ribbon, production method thereof, iron core, and transformer
Hajime Itagaki, Tokyo (JP); Morifumi Kuroki, Tokyo (JP); Makoto Sasaki, Tokyo (JP); and Shin Nakajima, Tokyo (JP)
Assigned to PROTERIAL, LTD., Tokyo (JP)
Filed by PROTERIAL, LTD., Tokyo (JP)
Filed on Jan. 11, 2024, as Appl. No. 18/410,257.
Application 18/410,257 is a continuation of application No. 17/620,284, granted, now 11,952,651, previously published as PCT/JP2020/024911, filed on Jun. 24, 2020.
Claims priority of application No. 2019-121525 (JP), filed on Jun. 28, 2019; application No. 2019-178568 (JP), filed on Sep. 30, 2019; application No. 2020-024119 (JP), filed on Feb. 17, 2020; and application No. 2020-054544 (JP), filed on Mar. 25, 2020.
Prior Publication US 2024/0191333 A1, Jun. 13, 2024
Int. Cl. C22C 45/00 (2023.01); B23K 26/362 (2014.01); C21D 8/12 (2006.01); C22C 45/02 (2006.01); H01F 1/153 (2006.01); H01F 27/25 (2006.01); H01F 27/255 (2006.01); H01F 30/10 (2006.01); H01F 30/12 (2006.01)
CPC C22C 45/008 (2013.01) [B23K 26/362 (2013.01); C21D 8/1294 (2013.01); C22C 45/02 (2013.01); H01F 1/15308 (2013.01); H01F 27/25 (2013.01); H01F 27/255 (2013.01); H01F 30/10 (2013.01); H01F 30/12 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A production method of an Fe-based amorphous alloy ribbon having a first surface and a second surface, the production method comprising irradiating at least the first surface of the Fe-based amorphous alloy ribbon with a laser that uses a CW (continuous wave) oscillation method to obtain the Fe-based amorphous alloy ribbon having linear laser irradiation marks, wherein
a laser output energy density of the laser that uses the CW (continuous wave) oscillation method is 5 J/m or more and 35 J/m or less, and
the linear laser irradiation marks are arranged along a direction orthogonal to a casting direction of the Fe-based amorphous alloy ribbon.