Title:
巻鉄心、及びその製造方法
Document Type and Number:
Japanese Patent JP6690739
Kind Code:
B2
Abstract:
A wound core is formed by laminating a plurality of bent bodies formed from a grain-oriented electrical steel sheet having a coating containing phosphorus formed on a surface, in a sheet thickness direction of the grain-oriented electrical steel sheet, in which the bent body is formed in a rectangular shape by having four flat portions and four corner portions adjacent to the flat portions, the corner portion has a bent region having a total bending angle of approximately 90° in a side view, the number of deformation twins present in the bent region in the side view is five or less per 1 mm of a length of a center line in the bent region in the sheet thickness direction, and the amount of phosphorus eluted from the corner portion in a case of being boiled in water for 30 minutes is 6.0 mg or less per 1 m2of a surface area of the corner portion.
More Like This:
Inventors:
Takato Mizumura
Masato Mizogami
Masao Himoto
Toshihiko Uemura
Eisuke Minematsu
Fumiaki Takahashi
Masato Mizogami
Masao Himoto
Toshihiko Uemura
Eisuke Minematsu
Fumiaki Takahashi
Application Number:
JP2018561392A
Publication Date:
April 28, 2020
Filing Date:
January 10, 2018
Export Citation:
Assignee:
Nippon Steel Corporation
International Classes:
H01F41/02; H01F27/245
Domestic Patent References:
| JP2011243792A | ||||
| JP62270723A | ||||
| JP2012161114A | ||||
| JP200952060A | ||||
| JP1032132A | ||||
| JP2017157806A |
Foreign References:
| WO2013058239A1 |
Attorney, Agent or Firm:
Sumio Tanai
Mitsuo Teramoto
Tomoo Katsumata
Hiroshi Yamaguchi
Mitsuo Teramoto
Tomoo Katsumata
Hiroshi Yamaguchi