Paper Details

In present industrial world modern machining process performs crucial role for economic development of thecountry. EDM is one of such unconventional machining process to achieve products with high dimensional accuracy,complicated shape and good quality. EDM is one where electrical sparks are generated by creating voltage differencebetween the electrode and stationary work piece in dielectric fluid. The material removal takes place due to thermalelectric energy of the sparks which melts, evaporates and erodes the work material. EDM is used to machine super hardmaterials which are not possible to machine in traditional machining processes. The main objective of the present workis to optimize the process parameters to achieve high MRR and low surface roughness. The experiments are conductedon Titanium Alloys Grade-2 and Grade-5 and the tool materials are copper, tungsten copper and graphite of each crosssectional area 10X10mm2 and 70mm of length. Considering process parameters like pulse on time, duty cycle anddischarge current. The output process parameters like MRR and SR are determined for every experimental runs. TaguchiL27 orthogonal array design is used to experimental design by Minitab17 software. Finally the multi-objectiveoptimization problem is solved by using Taguchi Grey Relational Analysis.

J.Ashok babau, Y.Rameswara Reddy, “Optimization of EDM process parametrs on hard Ti alloys by using of Grey Taguchi technique”, International Journal of Advance Engineering and Research Development (IJAERD), Vol. 4, Issue 11, pp. 246-259, November 2017.