Title:
TOOL
Document Type and Number:
WIPO Patent Application WO/2017/199752
Kind Code:
A1
Abstract:
Provided is a tool in which at least the cutting edge has a lower member comprising a cemented carbide, an upper member formed closer to the surface than the lower member and comprising a sintered body, and an intermediate layer formed between the lower member and the upper member, wherein: the cemented carbide contains tungsten carbide and a binder material having Ni as the main component thereof; the proportion of the tungsten carbide is 70 volume%-90 volume% with respect to the overall cemented carbide; the proportion of the binder material is 10 volume%-30 volume% with respect to the overall cemented carbide; the sintered body contains cubic boron nitride, a binder phase having Ni as the main component thereof, and unavoidable impurities; the proportion of the cubic boron nitride is 80 volume%-95 volume% with respect to the overall sintered body; the proportion of the total of the binder phase and the unavoidable impurities is 5 volume%-20 volume% with respect to the overall sintered body; and the intermediate layer contains a phase having Ni as the main component thereof, and a phase having Ti as the main component thereof.
Inventors:
KUDOH TAKAHIDE (JP)
Application Number:
PCT/JP2017/017177
Publication Date:
November 23, 2017
Filing Date:
May 01, 2017
Export Citation:
Assignee:
TUNGALOY CORP (JP)
International Classes:
B23B27/14; B23B27/20; B23B51/00; B23C5/16; B23F21/00; C04B35/5831; B23D77/00; B23G5/06
Domestic Patent References:
| WO2012070563A1 | 2012-05-31 | |||
| WO2009123065A1 | 2009-10-08 |
Foreign References:
| JP2002302732A | 2002-10-18 | |||
| JP2014208889A | 2014-11-06 | |||
| US20100132266A1 | 2010-06-03 | |||
| JP2006057155A | 2006-03-02 | |||
| JP2006144089A | 2006-06-08 |
Attorney, Agent or Firm:
INABA, Yoshiyuki et al. (JP)
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