Original Articles: 2015 Vol: 7 Issue: 7
Surface improvement of SKD61 die steel material after electrical discharge machining with graphite electrode
Electric discharge machining (EDM) is widely used for machining difficult to cut materials, complex shapes and products requiring high precision work. The limitations of this process are the low productivity and low surface quality after machining. Therefore, to overcome these limitations of EDM process is an utmost concern of the present study. This paper presents the study of the influence of titanium powder mixed in dielectric fluid on the surface quality of SKD61 steel machined by EDM process. The machined surface was characterized for surface roughness, thickness of heat-affected zone, chemical composition, microhardness and topography. Results of the characterization shows that powder mixed in dielectric medium can be a solution to improve the quality of machined surface.