Effect of Process Parameters on Machining Time in PMEDM Cylindrical Shaped Parts with Silicon Carbide Powder Suspended Dielectric

Abstract

This paper presents a work on the effect of Powder Mixed Electric Discharge Machining (PMEDM) parameters on the machining time when machining cylindrical shaped parts made from 90CrSi alloy steel. Five parameters including pulse on time T on , powder concentration C p , pulse off time T off , pulse current IP and server voltage SV are explored their contribution on machining time by using the Taguchi method in eighteen experiments based on an orthogonal array L 18 (2 1 and 3 4 ). Based on ANOVA analysis, an optimum model of the machining time was proposed. The model was well verified by comparing with the experiment, and it, therefore can be used for further studies in the PMEDM process.