| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a cemented carbide which is excellent in wear resistance, chipping resistance and welding resistance even in high speed cutting and heavy feed cutting, and in which an amount of WC used is reduced compared with the conventional cemented carbide. <P>SOLUTION: In the cemented carbide, the amount of a hard phase component comprising WC, Ti(C, N), (Ta, Nb)C (including the case of Nb=0) and Mo<SB POS="POST">2</SB>C is 80-92 wt.%, and the amount of a binding phase component comprising Co and/or Ni is in the range of 8-20 wt.%, wherein the amount of Mo<SB POS="POST">2</SB>C of the hard phase component is 5-15 wt.%, and the amount of Ti (C, N) is in the range of 8-35 wt.%. The alloy structure is composed of four phases of a WC phase, a (W, Ti, Ta, Nb, Mo)(C, N) phase (including the case of Nb=0), a Ti(C, N) phase and a binding phase, and the average particle diameter of the WC phase is 0.8 μm or less. <P>COPYRIGHT: (C)2013,JPO&INPIT |
