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Influence of EDM process parameters in deep hole drilling of Inconel 718

The International Journal of Advanced Manufacturing Technology volume 38, pages 74–84 (2008)Cite this article

Abstract

This paper reports on an experimental investigation of small deep hole drilling of Inconel 718 using the EDM process. The parameters such as peak current, pulse on-time, duty factor and electrode speed were chosen to study the machining characteristics. An electrolytic copper tube of 3 mm diameter was selected as a tool electrode. The experiments were planned using central composite design (CCD) procedure. The output responses measured were material removal rate (MRR) and depth averaged surface roughness (DASR). Mathematical models were derived for the above responses using response surface methodology (RSM). The results revealed that MRR is more influenced by peak current, duty factor and electrode rotation, whereas DASR is strongly influenced by peak current and pulse on-time. Finally, the parameters were optimized for maximum MRR with the desired surface roughness value using desirability function approach.

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Authors and Affiliations

  1. School of Mechanical and Building Sciences, Vellore Institute of Technology, Vellore, Tamil Nadu, India

    P. Kuppan & S. Narayanan

  2. Department of Production Technology, MIT Campus, Anna University, Chennai, India

    A. Rajadurai

Authors
  1. P. Kuppan
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  2. A. Rajadurai
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  3. S. Narayanan
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Correspondence to P. Kuppan.

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Kuppan, P., Rajadurai, A. & Narayanan, S. Influence of EDM process parameters in deep hole drilling of Inconel 718. Int J Adv Manuf Technol 38, 74–84 (2008). https://doi.org/10.1007/s00170-007-1084-y

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  • DOI: https://doi.org/10.1007/s00170-007-1084-y

Keywords

  • Deep hole drilling
  • EDM
  • Inconel 718
  • CCD
  • RSM
  • Desirability function