The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 20, 2019
Filed:
Jan. 07, 2015
Applicant:
Hitachi Metals, Ltd., Tokyo, JP;
Inventors:
Takayuki Tsuji, Kitaibaraki, JP;
Hiromitsu Kuroda, Hitachi, JP;
Tetsuya Tokumitsu, Hitachi, JP;
Takamitsu Kimura, Hitachi, JP;
Yosuke Shiba, Hitachi, JP;
Hiroshi Matsuzaki, Hitachi, JP;
Yuichi Komuro, Hitachi, JP;
Shingo Amamiya, Hitachi, JP;
Assignee:
HITACHI METALS, LTD., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B23H 7/08 (2006.01); C22C 9/04 (2006.01); C22F 1/16 (2006.01); B23K 35/02 (2006.01); B23K 35/30 (2006.01); B23K 35/40 (2006.01); C22C 18/00 (2006.01);
U.S. Cl.
CPC ...
B23H 7/08 (2013.01); B23K 35/0227 (2013.01); B23K 35/0244 (2013.01); B23K 35/302 (2013.01); B23K 35/404 (2013.01); C22C 9/04 (2013.01); C22F 1/165 (2013.01); C22C 18/00 (2013.01);
Abstract
An electrical discharge machining electrode wire includes a core including a copper or a copper alloy, and a covering layer that covers a periphery of the core and includes a zinc. The covering layer includes an outermost layer consisting of an ε-phase of a copper-zinc based alloy. The outermost layer has a Vickers hardness of 200 to 300 Hv.