Effect of machining parameters on surface roughness in EDM of AISI H 13 steel
Keywords:
EDM, Taguchi method, Surface roughness, ANOVAAbstract
Electrical discharge machining (EDM) is a non-traditional manufacturing technique that has been widely
used in the production of precision engineering components throughout the world in recent years. The most important
performance measure in EDM is the surface roughness. In this study, the experimental studies were conducted under
varying pulse on time, current and gap voltage. The numbers of experiments were reduced by L9 array of Taguchi’s
method of DOE. Signal-to-noise (S/N) ratio was employed to determine the most influencing levels of parameters that
affect the surface roughness in the EDM of AISI H13 Steel. To validate the study, confirmation experiment has been
carried out at optimum set of parameters and predicted results have been found to be in good agreement with
experimental findings.