粒度对颗粒流滴注润滑车削影响实验

Effect Experimental of Particle Size on Particle Flow Drop Lubrication Cutting

颗粒流滴注润滑是一种新型绿色切削润滑技术,能解决传统颗粒流切削的颗粒导入问题。为了研究颗粒粒度对切削效果的影响,进行45钢车削实验,用不同粒度的Al_(2)O_(3)颗粒流润滑,分析切削力、切削温度、光洁度、刀具寿命和粒度的关系。实验结果显示:粒度影响切削效果,存在最佳粒度,粒度过大或过小都会导致切削效果变差;粒度过大会影响颗粒流渗透进摩擦面,粒度过小则无法适应粗糙及剧烈变动的摩擦面,两者都限制了颗粒流的分离和抹平作用,导致减摩效果变差;采用合理粒度,颗粒流点滴润滑切削效果甚至好于浇注润滑。

Particle flow drop lubrication is a new green cutting lubrication technology,which can solve problem of medium introduction in traditional particle flow cutting.In order to investigate the influence of particle size on cutting effect,Al_(2)O_(3)particle flow with different particle size was used to cut 45 steel,and the relationships between cutting force,cutting temperature,finish,tool life and particle size were analyzed to find out reason.The experimental results show that particle size has an influence on cutting effect,and there is an optimal particle size.Too large or too small particle size can lead to deterioration of cutting effect.Too large particle size affects the penetration of particle flow into friction surface,and too small particle size cannot adapt rough and violently changing friction surface.Both of them limit separation and leveling effect of particle flow,resulting in poor antifriction effect.Particle flow drop lubrication adopts reasonable particle size,and cutting effect is even better than pouring lubrication.