An Investigation on PRMMC Polishing with Electrochemical Mechanical Machining Process

Abstract

Since Particle Reinforced Metal Matrix Composites (PRMMC) normally applied Al2O3, SiC particle and other hard material as reinforce item, traditional manufacturing processes are hard to machine PRMMC with high efficiency and low tool cost. This paper presents an electrochemical mechanical (ECMM) hybrid polishing procedure for PRMMC, and the influences of parameters such as work voltage, grinding area proportion, the formula and concentration of electrolyte has been investigated. Through a hybrid polishing compound with a no Z direction feed pure mechanical grinding progress in Vx opposite direction, Ra around 0.5um PRMMC surface can be achieved.

Simulation Analysis and Experimental Validation of Cathode Tool in Electrochemical Mill-Grinding of Ti6Al4V

“…Electrochemical grinding (ECG) is an electrochemical mechanical composite machining method. During processing, the surface of the workpiece is oxidized into a dense anode passivation film under the effect of the current and the electrolyte [9,10]. The passivation film can be quickly scraped off by the abrasive on the grinding wheel, so that the new metal is exposed on the surface of the workpiece, and the process of electrolysis can continue.…”