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Title:
Fe-BASED AMORPHOUS ALLOY RIBBON AND METHOD FOR PRODUCING SAME, IRON CORE, AND TRANSFORMER
Document Type and Number:
WIPO Patent Application WO/2019/189813
Kind Code:
A1
Abstract:
One aspect of this invention provides an Fe-based amorphous alloy ribbon comprising a free solidification surface and a rolled surface, having a plurality of rows of laser irradiation marks, each comprising a plurality of laser irradiation marks, on the free solidification surface and/or the rolled surface. Of the plurality of rows of laser irradiation marks provided in the casting direction of the Fe-based amorphous alloy ribbon, the line interval, which is the interval between center lines in the central part in the width direction which intersects with the casting direction, between adjoining rows of laser irradiation marks, falls within the range of 10 mm to 60 mm, inclusive, and the spot interval, which is the interval between center points of a plurality of laser irradiation marks in each of the plurality of rows of laser irradiation marks falls within the range of 0.10 mm to 0.50 mm, inclusive. The numerical density D of laser irradiation marks (=(1/d1)×(1/d2), where d1 is the line interval and d2 is the spot interval) falls within the range of 0.05 marks/mm2 to 0.50 marks/mm2, inclusive.

Inventors:
ITAGAKI, Hajime (2-70, Konan 1-chome, Minato-k, Tokyo 24, 〒1088224, JP)
OHTA, Motoki (2-70, Konan 1-chome, Minato-k, Tokyo 24, 〒1088224, JP)
KUROKI, Morifumi (2-70, Konan 1-chome, Minato-k, Tokyo 24, 〒1088224, JP)
SASAKI, Makoto (2-70, Konan 1-chome, Minato-k, Tokyo 24, 〒1088224, JP)
Application Number:
JP2019/014154
Publication Date:
October 03, 2019
Filing Date:
March 29, 2019
Export Citation:
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Assignee:
HITACHI METALS,LTD. (2-70, Konan 1-chome Minato-k, Tokyo 24, 〒1088224, JP)
International Classes:
H01F1/153; C22C45/02
Domestic Patent References:
WO2011030907A12011-03-17
WO2014142204A12014-09-18
Foreign References:
JPH04367202A1992-12-18
JP2012031498A2012-02-16
JPS5797606A1982-06-17
Attorney, Agent or Firm:
NAKAJIMA, Jun et al. (TAIYO, NAKAJIMA & KATO Seventh Floor HK-Shinjuku Bldg., 3-1, Shinjuku 4-chome Shinjuku-ku Tokyo 22, 〒1600022, JP)
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