TITLE:
Parametric Optimization of PMEDM Process using Chromium Powder Mixed Dielectric and Triangular Shape Electrodes
AUTHORS:
Kuldeep Ojha, R. K. Garg, K. K. Singh
KEYWORDS:
EDM; PMEDM; MRR; TWR; Optimization
JOURNAL NAME:
Journal of Minerals and Materials Characterization and Engineering,
Vol.10 No.11,
September
12,
2011
ABSTRACT: In this article, parametric optimization for material removal rate (MRR) and tool wear rate
(TWR) study on the powder mixed electrical discharge machining (PMEDM) of EN-8 steel has
been carried out. Response surface methodology (RSM) has been used to plan and analyze the
experiments. Average current, duty cycle, angle of electrode and concentration of chromium
powder added into dielectric fluid of EDM were chosen as process parameters to study the
PMEDM performance in terms of MRR and TWR. Experiments have been performed on newly
designed experimental setup developed in laboratory. Most important parameters affecting
selected performance measures have been identified and effects of their variations have been
observed.