Effect of process parameters on the electrical discharge machining of aluminum metal matrix composites through a response surface methodology approach

Science and Engineering of Composite Materials

Balasubramaniam V.¹  Baskar N.²  Narayanan Chinnaiyan Sathiya³ 

[1] Department of Mechanical Engineering, J.J. College of Engineering and Technology, Triuchirappalli, Tamil Nadu 620 009, India;Department of Mechanical Engineering, MAM College of Engineering, Triuchirappalli, Tamil Nadu 620 105, India;National Institute of Technology, Department of Production Engineering, Triuchirappalli, Tamil Nadu 620 015, India;

关键词: cylindricity;    edm;    metal matrix composites;   

DOI  :  10.1515/secm-2013-0314

来源: DOAJ

【 摘 要 】

This work presents the multiobjective optimization of machining parameters during the electrical discharge machining (EDM) of aluminum (Al)-silicon carbide (SiC) metal matrix composites (MMC). The process parameters considered were current, pulse on-time, dielectric flushing pressure, and SiC particles. A copper rod was used as an electrode. An Al-SiC MMC with Al 6061 as matrix and SiC particles having three different sizes (i.e., 15, 25, and 40 μm) were used as workpieces. The experiments were planned using design of experiments through response surface methodology (RSM). The mathematical models were developed to predict the better performance measures such as the material removal rate (MRR), electrode wear rate (EWR), surface roughness (SR), and cylindricity (CY). The desirability approach in RSM was performed for optimization. It was found that the MRR increases with increasing peak current, pulse on-time, flushing pressure, and particle size. The EDM parameters are to be analyzed for the MRR, EWR, SR, and CY. The best one is proposed for validation.

【 授权许可】

Unknown