Influence of Electrode Geometry and Process Parameters on Surface Quality and MRR in Electrical Discharge Machining (EDM) of AISI H13

摘要

Electrical discharge machining (EDM) is a nontraditional process that uses the electrical spark discharge to machine electrically conducting materials such as tool and die steels, ceramics, etc., for geometrically complex shapes, which are difficult to machine using a more traditional approach. However due to the process nature there is still failure to accurately understand process parameter influence on the surface quality, material removal rate etc. On the other hand, designing and re-shaping of required electrodes for each feature are time consuming and the number of electrode stored is very high. Therefore to increase the productivity, quality and flexibility standardized simple electrode shapes, capable to machine different features, must be analyzed. This study present experimental analysis based on taguchi design and found the contribution of Tool Geometry on the Surface Roughness and Material Removal Rate (MRR) with other processing parameter. The most significant parameter/s for both output parameters have been calculated.