Title:
cBN SINTER AND cBN SINTER TOOL
Document Type and Number:
Japanese Patent JP2013039668
Kind Code:
A
Abstract:
To provide cBN sinter which is excellent in chipping resistance and wear resistance in the processing of hard-cutting centrifugally-cast iron.
The cBN sinter is composed of cBN components of 50 to 90% or 40 to 85% in volume is characterized in that: the cBN sinter contain alumina or zirconia by 9 to 50% in volume; and the weight ratio of zirconia/alumina is 0.1 to 4. Since a tool which is used in a region related to the cutting of this cBN sinter is excellent in the strength, hardness and toughness of the cBN sinter, performance is improved in the processing of hard-cutting centrifugally-cast iron as compared with a conventional cBN sinter tool.
Inventors:
TERAMOTO MIKI
KUKINO AKIRA
FUKAYA TOMOHIRO
ABE MACHIKO
KUKINO AKIRA
FUKAYA TOMOHIRO
ABE MACHIKO
Application Number:
JP2012248459A
Publication Date:
February 28, 2013
Filing Date:
November 12, 2012
Export Citation:
Assignee:
SUMITOMO ELEC HARDMETAL CORP
International Classes:
B23B27/14; B23B27/18; B23B27/20; C04B35/48; C04B35/583
Domestic Patent References:
| JPH0292868A | 1990-04-03 | |||
| JPH0551261A | 1993-03-02 | |||
| JPS5858247A | 1983-04-06 |
Foreign References:
| WO2007144733A2 | 2007-12-21 |
Attorney, Agent or Firm:
Masami Sakai
Norio Kagami
Norio Kagami