An experimental evaluation of graphite nanoplatelet based lubricant in micro-milling

Micro-milling is characterized by significant frictional interaction between the tool and workpiece, leading to relatively short tool life. This paper evaluates a graphite nanoplatelet based cutting fluid specifically developed to reduce friction and associated heat generation at the tool-workpiece interfaces in micro-milling. The results of micro-slot milling experiments on H13 tool steel (50 HRc) with and without graphite lubrication are presented. In particular, cutting forces, slot depth, and surface finish obtained under different lubrication conditions are compared and discussed. Possible explanations for the experimental observations are given.