Near-dry machining for environmentally benign manufacturing - a comparison of machining performance with flood cooling and dry machining

摘要

This paper presents results of an experimental investigation of machining with MQL applications and provides a comparison of machining performance with flood cooling and dry machining. This study involves turning of AISI 4140 alloy steel under a wide range of cutting conditions. The results show that improved surface quality, chip-form/chip breakability and reduced forces are achieved by using MQL compared to the traditional flood cooling method. Experiments with progressive tool-wear reveal that the oil-based MQL method generates lower surface roughness and cutting forces over time in comparison with flood cooling method. Metallographical study of 2D chips shows a significant variation of tool-chip interfacial friction.