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:
Jun. 04, 2019
Filed:
May. 14, 2015
Mitsubishi Materials Corporation, Tokyo, JP;
Masaki Okude, Naka, JP;
Kenji Yamaguchi, Naka, JP;
MITSUBISHI MATERIALS CORPORATION, Tokyo, JP;
Abstract
A surface-coated cutting tool of the invention is a surface-coated cutting tool in which a surface of a tool body is coated with a lower layer and an upper layer, in which at least one layer of the lower layer is made of a TiCN layer, the upper layer has an average layer thickness of 2 to 15 μm and is made of an AlOlayer having an α-type crystal structure in a chemically deposited state, and in a coincidence grain boundary distribution graph, a highest peak is present in Σ3 in the range of Σ3 to Σ29, a distribution ratio of Σ3 occupies 35 to 70% of the whole coincidence grain boundary length of Σ3 or more, and a coincidence grain boundary of Σ31 or more occupies 25 to 60% of the whole coincidence grain boundary length of Σ3 or more.