Effect of process parameters on machining of Al -TiC metal matrix composites using RSM

The utilization of aluminium and its alloys are widely used in many engineering applications because of its good mechanical properties. But it has to be further improved for its tribological properties by adding hard reinforcement like TiC. At the same while, the manufacturing and machining of this hard aluminium metal matrix composite were complex. To overcome this, the modern method like Electrical Discharge Machine (EDM) was used mostly. However, eoretically or experimentally there is not enough data to
machine it at optimal parameter. These were made to focus to evaluate and optimize the EDM process parameters for working to Al-TiC using copper hollow tube electrode. To analyze the wear ratio between tool and workpiece, the experiments are done and the results are statistically analyze during Response Surface Methodology (RSM). The process parameters considered foranalysis are Discharge Current, Pulse on Time and Flushing pressure. Finally, the optimum levels of these parameters are determined.