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:
Oct. 26, 2004
Filed:
Feb. 12, 2002
Akihiro Goto, Tokyo, JP;
Toshio Moro, Tokyo, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
WC powder ( ) and W powder ( ) are mixed and entered in a press mold and compressed and molded, thereby forming a discharge surface treatment electrode ( ). Discharge is caused to occur between the discharge surface treatment electrode ( ) and a workpiece ( ) by a discharge surface treatment power unit ( ), whereby a component of the discharge surface treatment electrode ( ) melted by discharge heat is deposited on the workpiece ( ). W, a component of the discharge surface treatment electrode ( ), reacts with C, a component of work liquid ( ), to produce WC and together with the WC which is a component of the discharge surface treatment electrode ( ) a hard film ( ) made of WC is formed on the workpiece ( ). The hardness and strength of the hard film formed on the workpiece ( ) by the discharge surface treatment can be enhanced.