A Study of Electrical Discharge Machining Performance by Applied Rotating Electrode with Dielectric Flushing through the Axis of Electrode
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Abstract
The aim of this research is to investigate the improvement for drilling hole on the tool steel in the electrical discharge machining. The applied rotating electrode with modified dielectric flushing through the axle of electrode was performed in this study. The obtained results found that the machining time and material removal rate in the suction flushing through the axle of electrode were independent with the rotating speed. The machining time was reduced by 62% and material removal rate increased by 154 % compared to the side flushing with conventional electrode. Moreover, higher material removal rate was affected and increased the surface roughness of drilled wall by approximately 65% but the gap clearance was improved by 59 %. In addition, the efficiency in the electrical discharge machining with pressure flushing through the axis of electrode was also studied in this research.
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