COATED CUTTING TOOL - TUNGALOY CORP

Title:

COATED CUTTING TOOL

Document Type and Number:

WIPO Patent Application WO/2012/144574

Kind Code:

A1

Abstract:

The purpose of the present invention is to provide a coated cutting tool, in which receding of a position of a blade edge of the tool due to abrasion or chipping is unlikely to occur, and abrasion resistance and chipping resistance are excellent. This coated cutting tool is a coated cutting tool provided with a sintered hard alloy base material, and a coating film formed on a surface of the base material by chemical vapor deposition, wherein the average film thickness of the coating film is 3 to 20 μm, the coating film is configured from a lower film with the average film thickness of 2 to 15 μm, formed on the surface of the base material, and an upper film with the average film thickness of 1 to 10 μm, formed on a surface of the lower film on a side opposite to a surface in contact with the base material, the lower film has an alternate laminated film formed by alternately stacking TiN films each having the average thickness of 10 to 300 nm and TiCN films each having the average thickness of 0.1 to 0.5 μm, and the upper film has an aluminum oxide film.

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Inventors:

HIRANO YUSUKE

Application Number:

PCT/JP2012/060651

Publication Date:

October 26, 2012

Filing Date:

April 20, 2012

Export Citation:

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Assignee:

TUNGALOY CORP (JP)
HIRANO YUSUKE

International Classes:

B23B27/14

Foreign References:

JPH10180506A	1998-07-07
JP2007245269A	2007-09-27
JP2010253594A	2010-11-11
JPH09117806A	1997-05-06
JPH07136808A	1995-05-30
JPH07136808A	1995-05-30
JPH0433865B2	1992-06-04

Other References: