This paper presents investigation and optimization of Electric Discharge Machining (EDM) parameters using Taguchi method by taking bright steel as workpiece material. Three process parameters chosen were Pulse ontime (Ton), Flushing pressure(P) and Pulse Current(IP). An L9 orthogonal array was selected to study the effect of main factors and interaction between factors on the response variable i.e. Surface Roughness (SR), Material removal Rate (MRR) and Tool Wear Rate (TWR). The contribution of the main factors and interaction between them to the optimal surface roughness were determined. The Material Removal Rate (MRR), Tool Wear Rate (TWR) and surface integrity are some of the important performance attributes of EDM process. The objective of EDM is to get high MRR along with achieving reasonably good surface quality of machined component with reduced tool wear rate for bright steel material. Taguchi design has been implemented to investigate the effect of pulse current, Pulse on Time and Flushing pressure on the responses MRR, TWR and SR. It is being found that tool wear rate of heat treated Cu tool is less than that without heat treated Cu tool and surface roughness of work piece material i.e Bright steel is better when heat treated tool is used.
Electric Discharge Machining (EDM), Taguchi method, Material Removal Rate (MRR), Tool Wear Rate(TWR), Surface Roughness(SR) etc
