SURFACE-COVERED CEMENTED CARBIDE CUTTING TOOL IN WHICH HARD COVERED LAYER DEMONSTRATES EXCELLENT WEAR RESISTANCE IN HIGH-SPEED CUTTING

Title:

SURFACE-COVERED CEMENTED CARBIDE CUTTING TOOL IN WHICH HARD COVERED LAYER DEMONSTRATES EXCELLENT WEAR RESISTANCE IN HIGH-SPEED CUTTING

Document Type and Number:

Japanese Patent JP3873276

Kind Code:

B

Abstract:

PROBLEM TO BE SOLVED: To provide a surface-covered cemented carbide cutting tool in which a hard covered layer demonstrates excellent wear resistance in high-speed cutting.
SOLUTION: The hard covered layer of the surface-covered cemented carbide cutting tool with the hard covered layer having the total mean layer thickness of 5-20 μm is vapor-deposited on a surface of tungsten carbide based cemented carbide base body or titanium carbo-nitride cermet base body is formed of an alternately multiple laminate layer comprising a complex nitride layer of Al and Ti which has the mean layer thickness of 0.5-1 μm and satisfies the composition formula: (AlXTi1-X)N (where, X is 0.45 to 0.75 in terms of the atomic ratio), and a tungsten carbide layer having the mean layer thickness of 0.1-0.5 μm.

Inventors:

Ichinomiya, Natsuki
Fujisawa, Takashi
Izumi, Kazuki

Application Number:

JP2002000059956

Publication Date:

November 02, 2006

Filing Date:

March 06, 2002

Export Citation:

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Assignee:

MITSUBISHI MATERIALS CORP

International Classes:

B23B27/14; B23C5/16; B23B51/00; C23C14/06; C23C14/16; B23B27/14; B23C5/16; B23B51/00; C23C14/06; C23C14/16; (IPC1-7): B23B27/14; B23B51/00; B23C5/16; C23C14/06; C23C14/16

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