Title:
FE-BASED AMORPHOUS ALLOY RIBBON, PRODUCTION METHOD THEREFOR, IRON CORE, AND TRANSFORMER
Document Type and Number:
WIPO Patent Application WO/2020/262494
Kind Code:
A1
Abstract:
Provided is an Fe-based amorphous alloy ribbon having reduced iron loss in magnetic flux density conditions of 1.45 T, little deformation, and high productivity. This Fe-based amorphous alloy ribbon has a first surface and a second surface. The Fe-based amorphous alloy ribbon has a plurality of continuous linear laser irradiation marks on at least the first surface. The linear laser irradiation marks are provided in a direction orthogonal to the casting direction of the Fe-based amorphous alloy ribbon. The linear laser irradiation marks have uneven surface and, when the unevenness is evaluated from the casting direction, the height difference HL × width WA is 6.0–180 µｍ2, as calculated from the height difference HL between the highest point and the lowest point in the thickness direction of the Fe-based amorphous alloy ribbon and the width WA, which is the length of the linear laser irradiation marks, in the casting direction, on the first surface.
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Inventors:
ITAGAKI HAJIME (JP)
KUROKI MORIFUMI (JP)
SASAKI MAKOTO (JP)
NAKAJIMA SHIN (JP)
KUROKI MORIFUMI (JP)
SASAKI MAKOTO (JP)
NAKAJIMA SHIN (JP)
Application Number:
PCT/JP2020/024911
Publication Date:
December 30, 2020
Filing Date:
June 24, 2020
Export Citation:
Assignee:
HITACHI METALS LTD (JP)
International Classes:
H01F1/153; B22D11/06; C21D6/00; C21D8/12; C22C45/02; H01F27/245; H01F41/02
Domestic Patent References:
| WO2011030907A1 | 2011-03-17 | |||
| WO2012102379A1 | 2012-08-02 |
Foreign References:
| JPS60233804A | 1985-11-20 | |||
| JP2012031498A | 2012-02-16 | |||
| JPH0332886B2 | 1991-05-15 | |||
| JPS61258404A | 1986-11-15 | |||
| JPH0253935B2 | 1990-11-20 | |||
| JP2017054896A | 2017-03-16 | |||
| JP2008071982A | 2008-03-27 | |||
| JP2005072160A | 2005-03-17 | |||
| JPH032886B2 | 1991-01-17 | |||
| JPH0253935B2 | 1990-11-20 | |||
| JPH0332886B2 | 1991-05-15 |
Other References:
TAKAGI, YAMAMOTOYAMAJI: "The Transactions of the Institute of Electrical Engineering of Japan B", vol. 128, 2008, POWER AND ENERGY SOCIETY, article "An Evaluation of Amorphous Transformer using Load Curve Pattern Model for Pole Transformer", pages: 885 - 892
IEEE TRANSACTIONS ON MAGNETICS, vol. 44, 11 November 2008 (2008-11-11), pages 4104 - 4106
See also references of EP 3992993A4
IEEE TRANSACTIONS ON MAGNETICS, vol. 44, 11 November 2008 (2008-11-11), pages 4104 - 4106
See also references of EP 3992993A4
Attorney, Agent or Firm:
NAGOYA INTERNATIONAL PATENT FIRM (JP)
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