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Title:
SURFACE COVERED THROWAWAY CHIP EXCELLENT IN ANTI-WEAR QUALITY
Document Type and Number:
Japanese Patent JP2699816
Kind Code:
B2
Abstract:

PURPOSE: To increase the anti-wear quality and extend the cutting life of a throwaway chip by covering the surface of the throwaway chip made of the cemented carbide of a tungsten carbide group with a hard cover layer such as a compound carbide solid solution body of Ti and Al formed by ion plating.
CONSTITUTION: The surface of a throwaway chip composed of the cemented carbide of a tungsten carbide group is covered with a hard cover layer whose average layer thickness is less than 0.6-less than-6μm and which consists of a single layer of one kind out of a compound carbide solid solution body of Ti and Al a compound nitride solid solution body and a compound carbonitride solid solution body, formed by ion plating, or plural layers of more than two kinds. By providing such a hard cover layer like this, heat resistance, high temperature hardness and the quality of heat-resisting plasticity deformation can be improved much more by means of the solid solution of Al, and together with the improvement of the quality of close sticking to the chip surface by means of ion plating, an excellent anti-wear quality at the time of cutting can be obtained, and the extension of cutting life can be realized.


Inventors:
Yoshinori Hironori
Kato Munenori
Application Number:
JP19916993A
Publication Date:
January 19, 1998
Filing Date:
July 16, 1993
Export Citation:
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Assignee:
Mitsubishi Materials Corporation
International Classes:
B23B27/14; B23D13/00; B23P15/28; C04B41/87; C22C29/02; C22C29/04; C22C29/06; C22C29/16; C23C14/06; C23C16/30; C23C16/32; C23C16/34; C23C16/36; C23C26/00; (IPC1-7): B23B27/14; C23C14/06
Domestic Patent References:
JP5295580A
JP5864377A
JP5662961A
JP55120936A
JP5542150B2
Foreign References:
Other References:
11TH INTERNATIONAL PLANSEE SEMINAR ’85 Proceedings Volume 1(1985−5−20〜24)(オ−ストリア)p677−691
Attorney, Agent or Firm:
Kazuo Tomita (1 person outside)