To improve the sintering properties of recycle WC powder, the mixture of the recycle WC and commercial WC powders were conducted with the variables of inhibitors and binder. The mixture WC sample (recycle WC powder and commenrcial WC powder) had a smaller grain and higher densification than the recycle WC sample. The density and hardness of the mixure WC sample were higher than those of the recycle WC sample. The particle size of WC powders and the surface of WC samples were analyzed by field emission scanning electron microscope. And the density and hardness of WC samples were measured by analytical balances and vikers hardness tester. The mixing effects of recycle WC powder and commercial WC powder were studied.

Keywords: Recycle WC, commercial WC, mixing effect, Particle size, Agglomeration.