Effect of cryogenic treatment and post-cryogenic tempering on wear resistance of cemented carbide head for pick

doi:10.13251/j.issn.0254-6051.2021.02.018

Abstract

Abstract: YG8 cemented carbide was selected as the material of cemented carbide head for pick of roadheader. The effects of cryogenic treatment and post-cryogenic tempering on the wear resistance and average friction coefficient of YG8 cemented carbide were studied. The changes of microstructure of each phase in YG8 cemented carbide caused by the two kinds of processes were investigated by means of SEM, EDS and XRD. The results show that post-cryogenic tempering treatment can obviously reduce the wear loss and average friction coefficient of YG8 cemented carbide. The content of η phase in YG8 cemented carbide is basically the same after cryogenic treatment and post-cryogenic tempering, but it is easier to promote the uniform distribution of η phase after post-cryogenic tempering.

Key words: cryogenic treatment, post-cryogenic tempering, cemented carbide head, wear resistance, microstructure

CLC Number:

TG156.91

Dong Liang. Effect of cryogenic treatment and post-cryogenic tempering on wear resistance of cemented carbide head for pick[J]. Heat Treatment of Metals, 2021, 46(2): 105-108.

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