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Investigation and Optimization of Inconel-718 during Dry EDM


Affiliations
1 Department of Mechanical Engineering, Walchand College of Engineering, Sangli, Maharashtra, India
     

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Dry electric discharge machining (EDM) is a new process in which the liquid dielectric is replaced by a gaseous as a medium. The flow of high velocity gas through hollow pipe tool electrode into the gap provides removal of debris and prevents excessive heating of the tool and work piece at the discharge spots. Keeping literature review into consideration and trial experiment in this paper, an attempt has been made by selecting compressed air as a dielectric medium, with Inconel – 718 as a work piece material and copper as a tool electrode. Experiments are performed using Taguchi DoE L27 orthogonal array to observe and analyze the effects of different process parameters to optimize the response variables such as material removal rate (MRR), tool wear rate (TWR) and surface roughness (Ra). In the current work, a unit has been developed to implement dry EDM process on existing oil based EDM machine.

Keywords

Dry Electrical Discharge Machining (Dry EDM), Material Removal Rate (MRR), Surface Roughness (Ra), Tool Wear Rate (TWR), Taguchi Method, Analysis of Variance.
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  • Leao, Fabio, N; Pashby, Ian R: A review on the use of environmentally friendly dielectric fluids in electrical discharge machining, ‘Journal of Materials Processing Technology’, 149 (1-3), 2004, 341-346.

  • Kunieda, M and Yoshida, M: Electrical Discharge Machining in Gas Tokyo University of Agriculture and Technology, Department of Mechanical Systems Engineering Tokyo Japan’, 1996.

  • Khundrakpam, Nimo Singh; Brar, Gurinder Singh; Deepak, Dharmpal: Grey-Taguchi Optimization of Near Dry EDM Process Parameters on the Surface Roughness, 'ICMPC 2017', vol. 5, no. 2, 2018, 4445-4451.

  • Macedoa F T B; Wiessner, M; Hollenstein, C; Kuster, F; Wegener, K: Investigation of the Fundamentals of Tool Electrode Wear in Dry EDM, ‘7th CIRP Conference on High Performance Cutting (HPC VII)’, vol. 46, 2016, 55-58.

  • Saha, S K & Choudry, S K: Multi–objective optimization of the dry electric discharge machining process, hal-00396875, version 1- 4, 2009.

  • Uhlmann, Eckart; Schimmelpfennig, Tassilo-Maria; Perfilov, Ivan; Streckenbach, Jan; Schweitzer, Luiz: Comparative Analysis of Dry-EDM and Conventional EDM for the Manufacturing of Micro holes in Si3N4-TiN, ‘18th CIRP Conference on Electro Physical and Chemical Machining (ISEM XVIII)’, vol. 42, 2016, 173-178.

  • Shirguppikar, Shailesh S; Dabade, Uday A: Experimental Investigation of Dry Electric Discharge Machining (Dry EDM) Process on Bright Mild Steel, 'IMME17', vol. 5, 2018, 7595-7603.

  • Govindan, P and Joshi, S: Investigations into performance of dry EDM using slotted electrodes, ‘International Journal of Precision Engineering and Manufacturing', vol. 12, no. 6, 2011, 957-963.

  • Govindan, P and Joshi, S: Experimental characterization of material removal in dry electrical discharge drilling, ‘International Journal of Machine Tools & Manufacture’, vol. 50, no. 5, 2010, 431–443.

  • Tao, J; Shih, AJ; and Ni, Jun: Experimental Study of the Dry and Near-Dry Electrical Discharge Milling Processes, ‘Journal of Manufacturing Science and Engineering’, vol. 130, 2008, DOI:10.1115/1.2784276.

  • Phadke M S : Quality engineering using robust design, Prentice Hall, Eaglewood Cliffs, 1989


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  • Investigation and Optimization of Inconel-718 during Dry EDM

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Authors

Amar S. Bhandare
Department of Mechanical Engineering, Walchand College of Engineering, Sangli, Maharashtra, India
Uday A. Dabade
Department of Mechanical Engineering, Walchand College of Engineering, Sangli, Maharashtra, India

Abstract


Dry electric discharge machining (EDM) is a new process in which the liquid dielectric is replaced by a gaseous as a medium. The flow of high velocity gas through hollow pipe tool electrode into the gap provides removal of debris and prevents excessive heating of the tool and work piece at the discharge spots. Keeping literature review into consideration and trial experiment in this paper, an attempt has been made by selecting compressed air as a dielectric medium, with Inconel – 718 as a work piece material and copper as a tool electrode. Experiments are performed using Taguchi DoE L27 orthogonal array to observe and analyze the effects of different process parameters to optimize the response variables such as material removal rate (MRR), tool wear rate (TWR) and surface roughness (Ra). In the current work, a unit has been developed to implement dry EDM process on existing oil based EDM machine.

Keywords


Dry Electrical Discharge Machining (Dry EDM), Material Removal Rate (MRR), Surface Roughness (Ra), Tool Wear Rate (TWR), Taguchi Method, Analysis of Variance.

References