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| Study on the wear resistance of Ni60-Cr3C2-WC/TiC plasma surfacing layer |
| WANG Guang，WANG Hong-fu，ZHAO Wen，WANG Ze-yu，ZHANG yan |
| College of Mechanical Engineering,North University of China,Taiyuan 030051,China |
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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.
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Received: 23 May 2018
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Corresponding Authors:
王洪福（1979—），男，博士，副教授，主要从事煤矿机械材料性能改进研究。
E-mail: 1017468621@qq.com
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2019, Vol. 29 
