PERFORMANCE OF GRAPHITE NANOPLATELET-ENHANCED FLUID IN REDUCED QUANTITY LUBRICATION CENTERLESS GRINDING

摘要

In grinding, oils are commonly applied by low-pressure flooding to cool and lubricate the wheel-workpiece contact interface. Although this method provides satisfactory bulk material cooling and cleaning of the wheel surface, it is wasteful and ineffective at removing heat from the grinding zone. This study evaluates the performance of a graphite nanoplatelet-enhanced fluid in reduced quantity lubrication (RQL) (-100 mL/min) centerless grinding of Inconel 718 and Ti-6AI-4V superalloys as a cost-effective and environmentally-friendly alternative to flood cooling. In particular, the effects of graphite platelet diameter and concentration on the specific grinding energy are evaluated over a range of material removal rates to find the parameter combination that maximizes lubrication performance. The results show that the application of graphite-enhanced cutting oil at a reduced flow rate lowers the specific grinding energy levels and wheel wear rates more significantly than high-volume flood cooling