Abstract:
With the application of non-conventional machining, it has become easier to create unusual
shapes on the workpiece. EDM is a non-conventional process of manufacturing which has
been studied by many for its great advantages. In this work, the objective was to find out
ways of enhancing performance of EDM by using two different nano powders, namely,
Graphite & Titanium Oxide. Findings indicate how each powder influences the MRR of
Ti-6Al-4V (the workpiece), the TWR of copper electrode (tool) & SR or surface roughness
of machined area after machining. The setup was designed with SolidWorks and the
experiments were designed with the help of Design Expert. In the study 3 input parameters:
Peak Current, Powder Concentration and Powder type were used. After doing the
experiments, Response Surface Methodology (RSM) was used for analysis of the results.
Through analysis it was concluded that, Titanium Oxide powder with a Desirability of
0.753 is better for fast machining with lower level of surface finish, whereas Graphite
powder with a Desirability of 0.465 is better for slow machining with higher level of
surface finish.
