Experimental Study and Parameter Optimization of Hybrid Electrical Discharge Machining

  • Authors

    • Nishant Kumar Singh
    • Sandeep Agrawal
    • Rajvardhan .
    • Yashvir Singh
    2018-07-20
    https://doi.org/10.14419/ijet.v7i3.12.17780
  • EDM, MRR, TWR, Taguchi Method, ANOVA, S/N ratio, Optimization.

  • Hard materials cannot be machined effectively by the individual machining process. In order to machine workpiece made from hard and stiff materials effectively a concept of Hybrid machining process (HMP) is originated. The HMP is an integration of two or more machining process to get the advantage of each individual process. HMP is used to machine  This study focuses on evolving a novel process using both oil and gas as dielectrics to analyse the effect on tool wear rate (TWR) and material removal rate (MRR). The flow of compressed gas through eccentric-hole rotating tool improved the debris removal from inter-electrode gap, hence it improve the flushing competence of the machining process. In this experimental investigation, the workpiece material is Al-20% SiC metal matrix composite (MMC) and the electrode material is copper. The experiments were conducted following the Taguchi method of design experiments. The effect of various machining parameters on MRR and TWR has been studied. The optimization of process parameter has also been done. The results of TWR and MRR are analysed using S/N ratio, ANOVA and main effect plots. The experimental results, revels that discharge current, gap voltage and pulse on time significantly affected MRR, and TWR. The experimental inference reveal that provision of compressed air through eccentric hole rotary tool has a positive effect on machinability of electrical discharge machining (EDM) process.

     

     

  • References

    1. [1] K.H. Ho, S.T. Newman, State of the art electrical discharge machining (EDM). Int. J. Mach. Tools Manuf. 43(2003) 1287–300.

      [2] N.K. Singh, P.M. Pandey, K.K. Singh, M. K. Sharma, Steps towards green manufacturing through EDM process: A review. Cogent Engineering 2016, 3: 1272662, doi:10.1080/23311916.2016.1272662.

      [3] M. Kuineda, S. Furuoya, Improvement of EDM Efficiency by Supplying Oxygen Gas into Gap. CIRP Annals- Manuf. Technol. 40(1991), 215-218.

      [4] M. Kunieda, M. Yoshida, Electrical discharge machining in gas. Annals of CIRP, 46 (1997), 143–146.

      [5] Q.H. Zhang, J.H. Zhang, J.X. Deng, Z.W. Niu, Ultrasonic vibration in electrical discharge machining. J. Mater. Process Tech. 129(2002), 135-138.

      [6] Q.H. Zhang, J.H. Zhang, J.X. Deng, S.F. Ren, Study on technology of ultrasonic vibration aided electrical discharge machining in gas. J. Mater. Process Tech. 149(2004), 640-644.

      [7] Q.H. Zhang, J.H. Zhang, Q.B. Zhang, An Investigation of ultrasonic-assisted electrical discharge machining in gas. Int. J. Mach. Tools Manuf. 46 (2005), 1582-1588.

      [8] J. Tao, A.J. Shih, J. Ni, Experimental study of the dry and near dry electrical discharge milling process. J. Manuf. Sci. Eng. 130 (1) (2008), 1-8.

      [9] P. Govindan, S.S. Joshi, Investigation into Performance of dry EDM using slotted electrodes. International J. Precis. Eng. Manuf. 12(6) (2011), 957-963.

      [10] R. Roth, F. Kuster, K. Wenger, Influence of Oxidizing Gas on the Stability of Dry Electrical Discharge Machining Process. Procedia CIRP, 6(2013), 339-344.

      [11] B. Mohan, A. Rajadurai, K.G. Satyanarayana, Effect of SiC and rotation of electrode on electric discharge machining of Al-SiC composite. J. Mater. Process Tech. 124(2002), 297-3042.

      [12] P. Kuppan, A. Rajadurai, S. Narayanan, Influence of EDM process parameters in deep hole drilling of Inconel 718. Int. J. Adv. Manuf. Tech. 38(2008), 74–84.

      [13] Teimouri R, Baseri H. Effects of magnetic field and rotary tool on EDM performance. J Manuf. Process 2012; doi: 10.1016/j. jmapro.2012.04.002.

      [14] AbdualKareem S, Khan A.A, Konneh M. Reducing electrode wear ratio using cryogenic cooling during electrical discharge marching. Int J Adv Manuf Tech 2009; 45: 1146-1151.

      [15] Srivastava V, Pandey PM. Effect of process parameters on the performances of EDM process with ultrasonic assisted cryogenically cooled electrode. J Manuf Process 2012; 14: 393-402.

      [16] E. Aliakabari, H. Baseri, Optimization of machining parameters in rotary EDM process by using the Taguchi method. Int. J. Adv. Manuf. Tech. 62 (9) (2012), 1041-1053.

      [17] Singh NK, Pandey PM, Singh KK (2016) EDM with Air Assisted Multi-Hole Rotating Tool. Mater Manufac Processes 31 (14): 1872-1878.

      [18] Yoshida M, Ishii Y, Ueda T (2017) Study on electrical discharge machining for cemented carbide with non-flammable dielectric liquid: Influence of form of oxygen supplied to dielectric liquid on machining Proc IMechE Part B: J Engg Manufac, DOI: 10.1177/0954405417706995

      [19] Gu L, Li L, Zhao W. Electrical discharge machining of Ti6Al4V with a bundled electrode. Int J Mach Tools Manuf 2012; 53:100–106.

      [20] A. Singh, P. Kumar, I. Singh, Electrical discharge drilling of metal matrix composites with different tool geometries. J. Process Mech. Engg. 2013; doi: 10.1177/0954405413484726.

      [21] K.D. Chattopadhyaya, S. Verma, P.C. Satsangi, P.C. Sharma, Development of empirical model for different process parameters during rotary electrical discharge machining of copper–steel (EN-8) system. J. Mater. Proc. Tech. 209 (3) (2009), 1454–1465.

      [22] R. Karthikeyan, L. Narayanan, R.S. Naagarazan, Mathematical modeling for electric discharge machining of Al-SiC particulate composites. J. Mater. Process. Tech. 87(1999), 59-63.

      [23] K.M. Patel, P.M. Pandey, V. P. Rao, Study on Machinability of Al2O3 ceramic composite in EDM using Response Surface Methodology. J. Eng. Mater. Tech. 133(2011), 021004-9.

      [24] R Teimouri, H. Baseri, Effects of magnetic field and rotary tool on EDM performance. J. Manuf. Process 2012; doi:10.1016/j.jmapro.2012.04.002.

      [25] N.K. Singh, P.M. Pandey, K.K. Singh, Experimental investigations into the performance of EDM using argon gas-assisted perforated electrodes Materials and Manufacturing Processes 2016; doi: 10.1080/10426914.2016.1221079

      [26] V. Srivastava, P.M. Pandey, Effect of process parameters on the performances of EDM process with ultrasonic assisted cryogenically cooled electrode. J. Manuf. Process. 14 (3) (2012), 393-402.

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  • How to Cite

    Kumar Singh, N., Agrawal, S., ., R., & Singh, Y. (2018). Experimental Study and Parameter Optimization of Hybrid Electrical Discharge Machining. International Journal of Engineering & Technology, 7(3.12), 1161-1167. https://doi.org/10.14419/ijet.v7i3.12.17780