Title:
BENDING METHOD OF METAL SHEET, AND ELECTRIC-ELECTRONIC COMPONENT
Document Type and Number:
Japanese Patent JP2010082633
Kind Code:
A
Abstract:
To provide a bending method of a metal sheet by which the bendability is improved, even a copper alloy of high strength can be bent without being cracked, and the dimensional accuracy is excellent, and to provide an electric-electronic component.
In the bending method of the metal sheet for bending the metal sheet along a notch with the notch formed in a surface of the metal sheet being on the inner bending side, the width of a bottom part of the notch exceeds 50% of the thickness of the metal sheet, and the depth of the notch is 30% of the thickness of the metal sheet. Preferably, the metal sheet consists of a copper alloy, and the tensile strength of the metal sheet is 700 N/mm2.
Inventors:
SUDA HISASHI
KO ISHIN
NARUEDA HIROTO
SUGAWARA AKIRA
KO ISHIN
NARUEDA HIROTO
SUGAWARA AKIRA
Application Number:
JP2008251823A
Publication Date:
April 15, 2010
Filing Date:
September 29, 2008
Export Citation:
Assignee:
DOWA METALTECH KK
International Classes:
B21D11/08; B21D53/00; C22C9/06
Domestic Patent References:
| JPS5950916A | 1984-03-24 | |||
| JPS57209720A | 1982-12-23 | |||
| JP2003025019A | 2003-01-28 | |||
| JP2008038231A | 2008-02-21 |
Attorney, Agent or Firm:
Koichi Hirota
Yoshihiro Nagare
Naoko Matsuda
Hiroshi Ikeda
Yoshihiro Nagare
Naoko Matsuda
Hiroshi Ikeda
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