Migration of Electrode Material During Electro Discharge Machining

Abstract

During the spark transfer from tool to workpiece, the negative ions from tool strike the work surface while the positive ions from work strike the tool surface. The present research elucidates the migration of tool and work material while performing the machining on EDM. The energy dispersive X-ray (EDX) spectroscopy shows the relocation of component of tool material onto the work surface and vice versa. The present investigation depicted that higher discharge energy resulting due to elevated temperature makes the element loosen, and their migration is caused by the positive and negative ions upon the respective surfaces.