Abstract：In this study, plasma surfacing technology was used to melt the mixed powders of Ni60, WC, Cr3C2 and TiC on the surface of the matrix in a certain proportion according to metallurgical bonding, and the performance of the teeth was improved by the excellent properties of the powder materials. The results show that the hardfacing layer is mainly composed of Ni-Cr-Fe austenite phase, boride hard phase and carbide hard phase. Because of the existence of these phases, the hardness of the surfacing layer is greatly improved. The microhardness of the third sample is 713.8HV, and the hardness is the highest among the three samples. The surfacing layer of the third sample wears completely at 180 min, and the total wear time is the longest. The wear resistance of the third sample is the strongest.
2019, Vol. 29 
