Optimization of Chromium Mixed Powder EDM parameters using Response Surface Methodology for H13 Tool steel Machining

Author : Bikramjit Singh, Chandan Deep Singh, and Jasvinder Singh

Abstract                                                                           

In the present study, effect of chromium powder mixed in dielectric of EDM is studied during machining of H13 tool steel. Four parameters namely peak current, pulse on time, duty cycle and powder concentration are taken as input parameters and material removal rate (MRR) and tool wear rate (TWR) are considered as performance measures. Copper electrode is used as the tool. Analysis is done using Response Surface Methodology. Results revealed that pulse on time powder concentration; duty cycle and peak current are the significant factors affecting MRR while TWR is significantly affected by peak current only. Increasing the powder concentration results in increasing MRR and decreasing TWR

Keyword: Chromium powder, MRR, TWR and Response Surface Methodology.