| 摘要 |
PURPOSE:To provide high-toughness cermet having excellent resistance to plastic deformation and thermal cracking by making an alloy consisting of the dispersion phase composed of WC, TiC, TaC, NbC, Mo2C and TiN and the bond phase such as Ni non-magnetic. CONSTITUTION:An alloy consisting of 5-50wt% WC, 10-60% TiC, 5-30% TaC, 0.5-20% Mo2C and 5-30% TiN as the components for forming a dispersion phase and consisting of 5-20% Ni in addition to unavoidable impurities as a bond phase is formed a solid solution with the bond phase of about 20-25% W so as to make the coercive force of the alloy 0Oe by which the highly wear- resistant high-toughness cermet having excellent resistance to plastic deformation and thermal cracking is obtd. A part or the whole of said TaC can be substed. with NbC. The cutting tool consisting of the above-mentioned cermet has a long life and exhibits stable performance in interrupted cutting and exhibits stable performance under the cutting conditions of high speed and high feed.
|
