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A semi-empirical model to predict material removal rate during air-assisted electrical discharge machining

  • Nishant K. SinghEmail author
  • Pulak M. Pandey
  • K. K. Singh
Technical Paper

Abstract

The present study is focused on exploring the use of air-assisted electrical discharge machining (AAEDM) of high carbon high chromium die steel. One of the notable drawbacks of conventional EDM machining is low material removal rate (MRR). So, there is a critical need to evolve a method that can increase the MRR of conventional EDM process. This experimental study is focused on the use of compressed air in die sinking EDM, under controlled machining conditions to evaluate MRR. The influence of process parameters, viz., discharge current, pulse on time, duty cycle, tool rotation and discharge air pressure, on MRR has been investigated. ANOVA has been performed to select the significant factors affecting MRR. An effort has been done to establish a semi-empirical model to predict MRR in AAEDM process of high carbon high chromium die steel using dimensional analysis. The experimental and predicted values through semi-empirical model are found to be in accord with each other. The surface morphology analysis has been performed by using scanning electron microscope for machined specimens. The energy-dispersive X-ray spectrometer analysis has been used to investigate the material removal mechanism in AAEDM process.

Keywords

Perforated tool Air pressure Tool rotation Dimensional analysis 

Notes

References

  1. 1.
    Ho KH, Newman ST (2003) State of the art electrical discharge machining (EDM). Int J Mach Tools Manuf 43:1287–1300CrossRefGoogle Scholar
  2. 2.
    Mohan B, Rajadurai A, Satyanarayana KG (2002) Effect of sic and rotation of electrode on electric discharge machining of Al–Si composite. J Mater Process Technol 124:297–304CrossRefGoogle Scholar
  3. 3.
    Kuppan P, Rajadurai A, Narayanan S (2008) Influence of EDM process parameters in deep hole drilling of Inconel 718. Int J Adv Manuf Technol 38:74–84CrossRefGoogle Scholar
  4. 4.
    Teimouri R, Baseri H (2012) Effects of magnetic field and rotary tool on EDM performance. J Manuf Process.  https://doi.org/10.1016/j.jmapro.2012.04.002 CrossRefGoogle Scholar
  5. 5.
    Abdual Kareem S, Khan AA, Konneh M (2009) Reducing electrode wear ratio using cryogenic cooling during electrical discharge marching. Int J Adv Manuf Technol 45:1146–1151CrossRefGoogle Scholar
  6. 6.
    Srivastava V, Pandey PM (2012) Effect of process parameters on the performances of EDM process with ultrasonic assisted cryogenically cooled electrode. J Manuf Process 14:393–402CrossRefGoogle Scholar
  7. 7.
    Aliakabari E, Baseri H (2012) Optimization of machining parameters in rotary EDM process by using the Taguchi method. Int J Adv Manuf Technol 62(9–12):1041–1053CrossRefGoogle Scholar
  8. 8.
    Gu L, Li L, Zhao W (2012) Electrical discharge machining of Ti6Al4V with a bundled electrode. Int J Mach Tools Manuf 53:100–106CrossRefGoogle Scholar
  9. 9.
    Tsai KM, Wang PJ (2001) Semi-empirical model of surface finish on electrical discharge machining. Int. J. Machine Tools Manuf 41:1455–1477CrossRefGoogle Scholar
  10. 10.
    Yahya A, Manning CD (2004) Determination of material removal rate of an electro-discharge machine using dimensional analysis. J Phys D Appl Phys 37:1467–1471CrossRefGoogle Scholar
  11. 11.
    Kumar J, Khamba JS (2010) Modeling the material removal rate in ultrasonic machining of titanium using dimensional analysis. Int J Adv Manuf Technol 48:103–119CrossRefGoogle Scholar
  12. 12.
    Patil GN, Brahmankar PK (2010) Determination of material removal rate in wire electro-discharge machining of metal matrix composites using dimensional analysis. Int J Adv Manuf Technol 51:599–610CrossRefGoogle Scholar
  13. 13.
    Yahya A, Trias A, Erawan MA, Hisham KN, Khalil K, Rahim MA (2012) Comparison studies of electrical discharge machining (EDM) process model for low gap current. Adv Mat Res 433–440:650–654Google Scholar
  14. 14.
    Dave HK, Desai KP, Raval HK (2013) Development of semi-empirical model for predicting material removal rate during orbital electro discharge machining of Inconel 718. Int J Mach Mach Mater 13:215–230Google Scholar
  15. 15.
    Kumar A, Kumar V, Kumar J (2015) Semi-empirical model on MRR and overcut in WEDM process of pure titanium using multi-objective desirability approach. J Braz Soc Mech Sci Eng 37(2):689–721CrossRefGoogle Scholar
  16. 16.
    Bobbili R, Madhu V, Gogia AK (2015) Modeling and analysis of material removal rate and surface roughness in wire-cut EDM of armour materials. Eng Sci Technol Int J 30:1–5Google Scholar
  17. 17.
    Srivastava V, Pandey PM (2012) Experimental investigation on electrical discharge machining process with ultrasonic-assisted cryogenically cooled electrode. Proc IMechE Part B J Eng Manuf 227(2):301–314CrossRefGoogle Scholar
  18. 18.
    Wang CC, Yan BH (2000) Blind hole drilling of Al2O3/6061Al composite using rotary electro-discharge machining. J Mater Process Technol 102:90–102CrossRefGoogle Scholar
  19. 19.
    Singh NK, Pandey PM, Singh KK (2015) EDM with air assisted multi-hole tool. Mater Manuf Proc.  https://doi.org/10.1080/10426914.2015.1127954 CrossRefGoogle Scholar
  20. 20.
    Chattopadhyaya KD, Verma S, Satsangi PC (2009) Development of empirical model for different process parameters during rotary electrical discharge machining of copper–steel (EN-8) system. J Mater Process Technol 209:1454–1465CrossRefGoogle Scholar
  21. 21.
    Srivastava V, Pandey PM (2012) Effect of process parameters on the performances of EDM process with ultrasonic assisted cryogenically cooled electrode. J Manuf Proc.  https://doi.org/10.1016/j.jmapro.2012.05.001 CrossRefGoogle Scholar
  22. 22.
    Sonin AA (1992) The physical basis of dimensional analysis. MIT, CambridgeGoogle Scholar
  23. 23.
    Singh NK, Pandey PM, Singh KK (2016) Experimental investigations into the performance of EDM using argon gas-assisted perforated electrodes. Mater Manuf Proc.  https://doi.org/10.1080/10426914.2016.1221079 CrossRefGoogle Scholar
  24. 24.
    Mamalis AG, Vosniakos GC, Vaxevanidis NM (1987) Macroscopic and microscopic phenomena of electro-discharge machined steel surfaces: an experimental investigation. J Mech Work Technol 15:335–356CrossRefGoogle Scholar
  25. 25.
    Patel KM, Pandey PM, Rao PV (2011) Study on machinability of Al2O3 ceramic composite in EDM using response surface methodology. J Eng Mater Technol 133(2):021004–021010CrossRefGoogle Scholar

Copyright information

© The Brazilian Society of Mechanical Sciences and Engineering 2019

Authors and Affiliations

  • Nishant K. Singh
    • 1
    Email author
  • Pulak M. Pandey
    • 2
  • K. K. Singh
    • 3
  1. 1.Department of Mechanical EngineeringHCSTMathuraIndia
  2. 2.Department of Mechanical EngineeringIITDelhiIndia
  3. 3.Department of Mechanical EngineeringIIT (ISM)DhanbadIndia

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