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:
Jan. 09, 2007
Filed:
Aug. 08, 2005
Kenichi Inoue, Yasugi, JP;
Ken Inoue, Yonago, JP;
Kenichi Inoue, Yasugi, JP;
Ken Inoue, Yonago, JP;
Hitachi Metals, Ltd., Tokyo, JP;
Abstract
A casting member comprising hot-die steel or high-speed steel as base material and having coating layers at least on its working plane, wherein the outermost layer among the coating layers consists essentially of at least one nitride, oxinitride or carnonitride composed mainly of V, and another coating layer comprising at least one nitride, oxinitride or carnonitride composed mainly of Cr is formed as a layer just above the base material. If necessary, an intermediate layer comprising at least one nitride, oxinitride or carnonitride composed mainly of V and Cr may be formed as a coating layer on the boundary surface between the outermost layer and the layer just above the base material. The thickness of the outermost layer is preferably 0.5 to 5.0 μm, the thickness of the layer just above the base material is preferably 0.5 to 3.0 μm, and the thickness of the intermediate layer is preferably 1.0 μm or less. Said casting member has excellent resistance to seizure, resistance to cracking and resistance to waste by melting.