摘要
选取YG8硬质合金作为掘进机截齿硬质合金头的材料,研究深冷工艺和深冷后回火工艺对YG8硬质合金耐磨性和平均摩擦因数的影响,并通过扫描电镜(SEM)、能谱仪(EDS)、X射线衍射仪(XRD)探究两种工艺对YG8硬质合金相组织的影响。结果表明,深冷后回火处理在减少YG8硬质合金磨损量方面更明显。深冷处理在降低YG8硬质合金平均摩擦因数方面更有效。深冷处理和深冷回火后处理后YG8硬质合金的η相含量基本一致,但深冷后回火处理更容易促进η相的均匀分布。
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.
作者
董良
Dong Liang(Taiyuan Research Institute Co.,Ltd.,China Coal Technology Engineering Group,Taiyuan Shanxi 030006,China;Department of Mechanical Engineering,Taiyuan University of Science and Technology,Taiyuan Shanxi 030024,China)
出处
《金属热处理》
CAS
CSCD
北大核心
2021年第2期105-108,共4页
Heat Treatment of Metals
基金
国家自然科学基金(51675363)
山西天地煤机装备有限公司自立项目(M2018-05)
天地科技股份有限公司科技创新创业资金专项(2018-TD-MS046)。
关键词
深冷处理
深冷后回火处理
硬质合金头
耐磨性
微观组织
cryogenic treatment
post-cryogenic tempering
cemented carbide head
wear resistance
microstructure
