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:
Nov. 12, 2015
Mitsubishi Materials Corporation, Tokyo, JP;
Hidetoshi Asanuma, Tokyo, JP;
MITSUBISHI MATERIALS CORPORATION, Tokyo, JP;
Abstract
In a surface-coated cutting tool in which a hard coating layer having a total layer thickness of 0.5 to 10 μm is deposited on a surface of a tool body made of WC-based cemented carbide or TiCN-based cermet, the hard coating layer has an alternately laminated structure of A layers and B layers, in a case where the A layer is: (AlTi)N (here, a is in atomic ratio), the A layer satisfies 0.50≤a<0.75, in a case where the B layer is: (AlTi)N (here, b is in atomic ratio), the B layer satisfies 0.75≤b≤0.95, and when a layer thickness per layer of the A layers is represented by x (nm) and a layer thickness per layer of the B layers is represented by y (nm), 5y≥x≥3y and 250 (nm)≥x+y≥100 (nm) are satisfied.