An Orthogonal Experimental Analysis of Electrical Discharge Machining of Particle Reinforced Metal Matrix Composites with Concavo-Convex Electrode

Abstract:

A new concavo-convex electrode has been designed and employed and it was reported that electrical discharge machining (EDM) of particulate reinforced metal matrix composites with this kind of new electrode can accelerate the debris discharge during machining so that it has a higher material removal rate (MRR) compared to the case where a normal electrode was employed. Since there are many factors that can affect the MRR in the EDM process with the concavo-convex electrode, in order to determine which is the most important factor and to optimize the machining parameters, the relative importance of the various cutting parameters on material removal rate was established using an orthogonal experimental analysis in this study. The results of the analysis suggest that to achieve a high MRR for particulate reinforced aluminum 6061 with 10-vol% Al2O3 (10ALO) or 20vol% Al2O3 (20ALO) using a concavo-convex electrode, the duty cycle is the most influential factor among current, pulse duration and duty cycle.

• Periodical: Advanced Materials Research (Volumes 314-316)
• Pages: 890-893
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.314-316.890
• Online since: August 2011
• Authors: Jiang Wen Liu, Guang Xue Chen, Tai Man Yue, Zhong Ning Guo, Zi Yao Wan
• Keywords: Electric Discharge Machining (EDM), Electrode, Metal Matrix Composite (MMC), Orthogonal Analysis

References

[1] C. Senthilkumar, G. Ganesan, R. Karthikeyan and S. Srikanth: Materials Science and Technology, 26(3) (2010), pp.289-296.

[2] N.P. Hung, F.Y.C. Boey, K.A. Khor, Y.S. Phua, H.F. Lee: J. Materials Processing Technology, 56(1-4), (1996) pp.966-977

DOI: 10.1016/0924-0136(95)01908-1

[3] F. Müller and J. Monaghan: International Journal of Machine Tools and Manufacture, 40, (2000), pp.1351-1366

[4] N. Tomac and K. Tønnessen: Annals CIRP, 41, (1992), pp.55-58

[5] W.S. Lau, T.M. Yue and M. Wang: Annals CIRP, 43, (1994), pp.177-180

[6] F, Müller and J, Monaghan: 12th Int. Symposium for Electromachining, Aachen, 11-13, (1998), pp.513-522

[7] C.C. Wan, et al: Journal of materials processing technology, 102, (2000), pp.90-102

[8] B.H. Yan, et al: Journal of machine tools & manufacture, 40, (2000), pp.1403-1421

[9] J.W. Liu, T.M. Yue and Z.N Guo: World Journal of Engineering. 5(4) (2008), pp.539-540.

[10] Z.D. Liu: Electromachining & Mould (in Chinese), 1, (2006), pp.25-27