Experimental Investigation of Magnetic Force-assisted Powder-mixed EDM for Aluminium Based Metal Matrix Composite

Metal Matrix Composites (MMCs) are demanding in various industries due to its remarkable mechanical properties. But, machining of these materials is challenging due to inherent properties of matrix material and reinforcing material. Electric Discharge Machining (EDM) is a most versatile and popular machining process for generation of intricate geometrical shapes with high surface quality on such MMCs. But low material removal rate and poor geometrical characteristics restrict its further application. Therefore, in this paper, a variant of EDM i.e. Magnetic Force-assisted Powder-mixed EDM (MFPEDM) has been proposed for machining of such difficult-to-machining MMCs. This research is devoted to machining of Aluminium Titanium Di-boride MMC on MFPEDM and experimentally investigation of the impact of controlling factors for machining characteristics such as material removal rate, surface roughness, overcut and concluded that the Current, pulse-on time, and powder concentration was most common significant controlling factors.