Abstract
Wire electrical discharge machining (Wire EDM) is a non-conventional metal removal process as well as one of the best manufacturing processes suitable for producing jigs, fixtures, and dies. Among others, the machine is able to cut a workpiece having oblique and taper form. The objective of this paper is to optimize the input parameters of Wire EDM machine, such as no load voltage, capacitor, on-time, off-time, and servo voltage, for machining medium carbon steel ASSAB 760. The Taguchi design of experiments, the signal-to-noise ratio, and analysis of variance are employed to analyze the effects of the input parameters by adopting L18 Taguchi orthogonal array (OA) to conduct experiments using brass wire electrode of 0.2 mm in diameter. In order to achieve the maximum material removal rate (MRR) or the minimum surface roughness (SR), six controllable factors, i.e., the parameters of each at three levels are applied for determining the optimal combination of factors and levels. The results reveal that the MRR and the SR are greatly influenced by the on-time and the taper angle, respectively. Experimental results affirm the effectiveness of the method, and also prove that the Taguchi method is suitable to solving the stated problem within minimum number of experiments as compared to that of a full factorial design.
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Acknowledgments
The authors would like to express their gratitude to the Ministry of Education of the Republic of Indonesia, for their financial assistance to this study. The authors thank the Faculty of Mechanical and Aerospace Engineering, Institut Teknologi Bandung, Indonesia, for their provision of laboratory facilities and also thank former student, Mr. Hermanus Tri P. M., for his help in the experiment.
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Martowibowo, S.Y., Wahyudi, A. Taguchi Method Implementation in Taper Motion Wire EDM Process Optimization. J. Inst. Eng. India Ser. C 93, 357–364 (2012). https://doi.org/10.1007/s40032-012-0043-z
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DOI: https://doi.org/10.1007/s40032-012-0043-z