Abstract—Technologies for EDM machining are demanded in many industrial fields. Graphite is widely used as electrode material in EDM. Graphite (Poco EDM-3) and copperinfiltrated- graphite (Poco EDM-C3) electrodes were used to compare the corresponding to EDM properties. The experiments were carried out on Ti6Al4V. Performance in respect to MRR and electrode wear is compared for two graphite qualities. The results show that EDM3 graphite performs very well giving significantly higher MRR than EDM-C3, and also with acceptable relative electrode wear. The surface roughness of workpiece produced by EDM-C3 is better than EDM-3 due to gap distance of EDM-C3 is larger than that produced by EDM-3. The two electrode materials give the same micro-hardness of the layers that are about 800 HV.
Index Terms—EDM, graphite electrode, Ti6Al4V, copperinfiltrated- graphite.
Apiwat Muttamara is with the Faculty of Engineering, Thammasat University, Pathumthani, Thailand (e-mail: mapiwat@engr.tu.ac.th).
[PDF]
Cite: Apiwat Muttamara, "Comparison Performances of EDM on Ti6Al4V with Two Graphite Grades," International Journal of Chemical Engineering and Applications vol. 6, no. 4, pp. 250-253, 2015.
