COATED CUTTING TOOL - MITSUBISHI HITACHI TOOL ENG LTD

Title:

COATED CUTTING TOOL

Document Type and Number:

WIPO Patent Application WO/2019/035219

Kind Code:

A1

Abstract:

This coated cutting tool is a coated cutting tool having a hard coating film on a surface of a tool, wherein: the hard coating film is a nitride; the hard coating film includes from 80 at.% to 90 at.% of aluminum (Al) and from 10 at.% to 20 at.% of titanium (Ti) with respect to the total amount of metal elements (including semimetal elements); the hard coating film includes at most 0.50 at.% of argon (Ar) with respect to the total amount of metal elements (including semimetal elements) and nonmetal elements; the crystal structure of the hard coating film as specified by X-ray diffraction is a hexagonal close-packed structure, and the diffraction peak ascribable to the AlN (100) plane exhibits the maximum intensity; the average crystal grain size is from 5 nm to 50 nm; and, in observing the cross section of the hard coating film, there are at most five droplets per 100 µm2 having equivalent circle diameters of at least 1.0 µm.

More Like This:

WO/1998/033625	TOOL FOR MACHINING WORKPIECES BY CUTTING
JP2019089146	DIAMOND-COATED CUTTING TOOL
WO/2012/063515	SURFACE-COATED CUTTING TOOL

Inventors:

SASAKI TOMOYA (JP)

Application Number:

PCT/JP2017/043027

Publication Date:

February 21, 2019

Filing Date:

November 30, 2017

Export Citation:

Click for automatic bibliography generation Help

Assignee:

MITSUBISHI HITACHI TOOL ENG LTD (JP)

International Classes:

B23B27/14; C23C14/06; B23B51/00; B23C5/16; B23D43/00; B23D77/00; B23F21/00

Domestic Patent References:

WO2014142190A1	2014-09-18
WO2015186413A1	2015-12-10
WO2017170536A1	2017-10-05
WO2014002948A1	2014-01-03

Foreign References:

JP2005344148A	2005-12-15
JP2011189419A	2011-09-29
JP2008545063A	2008-12-11
JP2017156730A	2017-09-07
JPH08209333A	1996-08-13
JP2011189419A	2011-09-29
JP2013202700A	2013-10-07

Other References: