The Influence of Graphitization Catalyst Electrode in Electrical Discharge Machining of Polycrystalline Diamond-Finish-ing Condition

  • Rino Andias Anugraha Telkom University
  • M. Zulafif Rahim Universiti Tun Hussein Onn
  • Rasidi Ibrahim Universiti Tun Hussein Onn
Keywords: Electrical Discharge Machining (EDM), Polycrystalline Diamond (PCD), Copper- Nickel (Cu-Ni), Copper (Cu)

Abstract

Electrical Discharge Machining (EDM) is a non-contact machining process that becomes famous in machining of Polycrystalline Diamond (PCD). The material is typically used as the cutting tools for aerospace and automotive industries. However, low electrical conductivity and high melting temperature of PCD has caused slower EDM process. This investigation purposely designed to investigate the influence of different types of electrode which are Copper (ordinary electrode) and Copper-Nickel (newly proposed graphitization catalyst electrode) on EDM performance of MRR and Ra. Interestingly the newly proposed electrode gave positive impact to the investigated performance indication. Cu-Ni electrode recorded 35% better in MRR than the Cu electrode, though with higher short-circuiting rate. Cu-Ni also provided the lowest Ra value with 10% better than the best Ra produced by Cu electrode. This phenomenon occurred as due to the high interaction between the catalyst materials of nickel and diamond which supported by the qualification data provided in this investigation.

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Published
22-02-2020
How to Cite
Anugraha, R. A., Rahim, M. Z., & Ibrahim, R. (2020). The Influence of Graphitization Catalyst Electrode in Electrical Discharge Machining of Polycrystalline Diamond-Finish-ing Condition. International Journal of Integrated Engineering, 12(2), 211-217. Retrieved from https://publisher.uthm.edu.my/ojs/index.php/ijie/article/view/4233