关键词: 固体润滑剂, 钛合金, 磨削温度, 显微组织

Abstract:

Comparative dry grinding experiments of Ti-6Al-4V alloy were conducted with polymer-based solid lubricants (hexagonal boron nitride and graphite) coated grinding wheels and conventional green silicon carbide grinding wheel(GC) wheels without coating. The effect of solid lubricants on grinding temperature and surface quality were evaluated. The results show that there is a considerable improvement on the performance of dry grinding Ti-6Al-4V alloy by using polymer-based solid lubricant coating wheels in terms of grinding temperature and surface quality. Compare to the conventional GC wheels, the grinding temperature is decreased by 11%~ 40% using polymer-based solid lubricant coating wheels and no distortion occurred in subsurface layer during dry grinding.

Key words: solid lubrication, titanium alloy, grinding temperature, microstructure