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:
Feb. 08, 2011
Filed:
Nov. 12, 2003
Katsuo Kazahaya, Hyogo, JP;
Shigetaka Kawai, Hyogo, JP;
Yasushi Matsumoto, Hyogo, JP;
Keiji Ishibashi, Hyogo, JP;
Takahiro Imai, Hyogo, JP;
Katsuo Kazahaya, Hyogo, JP;
Shigetaka Kawai, Hyogo, JP;
Yasushi Matsumoto, Hyogo, JP;
Keiji Ishibashi, Hyogo, JP;
Takahiro Imai, Hyogo, JP;
A.L.M.T. Corp., Tokyo, JP;
Sumitomo Electric Industries, Ltd., Osaka, JP;
Abstract
The invention provides a diamond coated tool having an excellent cutting performance, wear resistance, adhesion resistance and work surface roughness in combination and a method of producing such a tool. A diamond coated tool comprising a substrate and a diamond coating formed on the surface of the substrate, wherein said substrate is made of a cemented carbide or a cermet, diamond grains constituting a growth surface of said diamond coating has an average grain size of about 1.5 micrometers or below, said diamond coating has a thickness ranging from about 0.1 micrometer to 20 micrometers, and said diamond coating has an average surface roughness Ra ranging from about 0.01 micrometer to 0.2 micrometer. Such a diamond coated tool can be obtained by carburizing the substrate consisting of a cemented carbide or a cermet, and growing up a diamond coating thereon.