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Comparison in the performance of EDM and NPMEDM using Al2O3 nanopowder as an impurity in DI water dielectric

  • Amit Kumar
  • Amitava MandalEmail author
  • Amit Rai Dixit
  • Alok Kumar Das
  • Saroj Kumar
  • Rachit Ranjan
ORIGINAL ARTICLE
  • 11 Downloads

Abstract

In this paper, an attempt is made to explore the possibilities of modifying the dielectric by adding alumina (Al2O3) nanopowder for improving the machining performances. The performance of newly developed nano powder-mixed electrical discharge machining (NPMEDM) process is compared with conventional EDM. Peak current, gap voltage and pulse-on time are taken as considerable process parameters to investigate material removal rate (MRR), surface roughness (SR), recast layer thickness, surface morphology, surface topography and induced residual stress. It is observed that the nanopowder-mixed dielectric medium gives better surface finish and higher metal removal rate as compared to conventional dielectric. The value of MRR increases from 32.75 to 47 mg/min and surface roughness improves from 2.245 to 1.487 μm. Thereafter, atomic force microscopy (AFM) and field emission scanning electron microscopy (FESEM) investigation of the machined surface reveals that presence of micro-crack, micro-hole and uneven deposition decrease substantially during NPMEDM process. Also, induced tensile residual stress on the machined surface significantly reduces in this modified process. Further, the basic mechanism of these processes are investigated by analysing pulse train discharge waveforms and reveals the better sparking stability of NPMEDM process, which results in the higher MRR and better surface quality.

Keywords

NPMEDM Al2O3 nanopowder Surface integrity AFM Residual stress 

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Notes

Acknowledgements

This paper is a revised and expanded version of the paper entitled “Comparison of Surface Roughness and Material Removal Rate in Die Sink EDM using Deionized Water and Powder Mixed DI water as a Dielectric Medium” presented at 6th International & 27th All India Manufacturing Technology, Design and Research Conference (AIMTDR2016), College of Engineering Pune, India, December 16–18, 2016.

References

  1. 1.
    Zhao WS, Meng QG, Wang ZL (2002) The application of research on powder mixed EDM in rough machining. J Mater Process Technol 129:30–33CrossRefGoogle Scholar
  2. 2.
    Kiyak M, Çakir O (2007) Examination of machining parameters on surface roughness in EDM of tool steel. J Mater Process Technol 191:141–144.  https://doi.org/10.1016/j.jmatprotec.2007.03.008 CrossRefGoogle Scholar
  3. 3.
    Baseri H, Sadeghian S (2016) Effects of nanopowder TiO2-mixed dielectric and rotary tool on EDM. Int J Adv Manuf Technol 83:519–528CrossRefGoogle Scholar
  4. 4.
    Patel S, Thesiya D, Rajurkar A (2018) Aluminium powder mixed rotary electric discharge machining (PMEDM) on Inconel 718. Aust J Mech Eng 16:21–30.  https://doi.org/10.1080/14484846.2017.1294230 CrossRefGoogle Scholar
  5. 5.
    Kumar VS, Kumar PM (2015) Machining process parameter and surface integrity in conventional EDM and cryogenic EDM of Al-SiCp MMC. J Manuf Process 20:70–78.  https://doi.org/10.1016/j.jmapro.2015.07.007 CrossRefGoogle Scholar
  6. 6.
    Bajpai V, Mahambare P, Singh RK (2016) Effect of thermal and material anisotropy of pyrolytic carbon in vibration-assisted micro-EDM process. Mater Manuf Process 31:1879–1888.  https://doi.org/10.1080/10426914.2015.1127937 CrossRefGoogle Scholar
  7. 7.
    Singh R (2010) Characterization of micro-EDM process for pyrolytic. Carbon 2010–2013Google Scholar
  8. 8.
    Erden A, Bilgin S (1981) Role of impurities in electric discharge machining. In: Proceedings of the twenty-first international machine tool design and research conference. Springer, pp 345–350Google Scholar
  9. 9.
    Kozak J, Rozenek M, Dabrowski L (2003) Study of electrical discharge machining using powder-suspended working media. Proc Inst Mech Eng Part B J Eng Manuf 217:1597–1602CrossRefGoogle Scholar
  10. 10.
    Jeswani ML (1981) Effect of the addition of graphite powder to kerosene used as the dielectric fluid in electrical discharge machining. Wear 70:133–139.  https://doi.org/10.1016/0043-1648(81)90148-4 CrossRefGoogle Scholar
  11. 11.
    Assarzadeh S, Ghoreishi M (2013) A dual response surface-desirability approach to process modeling and optimization of Al2O3 powder-mixed electrical discharge machining (PMEDM) parameters. Int J Adv Manuf Technol 64:1459–1477.  https://doi.org/10.1007/s00170-012-4115-2 CrossRefGoogle Scholar
  12. 12.
    Peças P, Henriques E (2008) Effect of the powder concentration and dielectric flow in the surface morphology in electrical discharge machining with powder-mixed dielectric (PMD-EDM). Int J Adv Manuf Technol 37:1120–1132CrossRefGoogle Scholar
  13. 13.
    Singh AK, Kumar S, Singh VP (2015) Effect of the addition of conductive powder in dielectric on the surface properties of superalloy super co 605 by EDM process. Int J Adv Manuf Technol 77:99–106.  https://doi.org/10.1007/s00170-014-6433-z CrossRefGoogle Scholar
  14. 14.
    Prihandana GS, Mahardika M, Hamdi M, Wong YS, Mitsui K (2011) Accuracy improvement in nanographite powder-suspended dielectric fluid for micro-electrical discharge machining processes. Int J Adv Manuf Technol 56:143–149CrossRefGoogle Scholar
  15. 15.
    Bhattacharya A, Batish A, Singh G, Singla VK (2012) Optimal parameter settings for rough and finish machining of die steels in powder-mixed EDM. Int J Adv Manuf Technol 61:537–548CrossRefGoogle Scholar
  16. 16.
    Bhattacharya A, Batish A, Kumar N (2013) Surface characterization and material migration during surface modification of die steels with silicon, graphite and tungsten powder in EDM process. J Mech Sci Technol 27:133–140CrossRefGoogle Scholar
  17. 17.
    Jahan MP, Rahman M, Wong YS (2011) Study on the nano-powder-mixed sinking and milling micro-EDM of WC-Co. Int J Adv Manuf Technol 53:167–180.  https://doi.org/10.1007/s00170-010-2826-9 CrossRefGoogle Scholar
  18. 18.
    Tzeng Y-F, Lee C-Y (2001) Effects of powder characteristics on electrodischarge machining efficiency. Int J Adv Manuf Technol 17:586–592CrossRefGoogle Scholar
  19. 19.
    Kumar H (2014) Development of mirror like surface characteristics using nano powder mixed electric discharge machining (NPMEDM). Int J Adv Manuf Technol 76:105–113.  https://doi.org/10.1007/s00170-014-5965-6 CrossRefGoogle Scholar
  20. 20.
    Mai C, Hocheng H, Huang S (2012) Advantages of carbon nanotubes in electrical discharge machining. Int J Adv Manuf Technol 59:111–117.  https://doi.org/10.1007/s00170-011-3476-2 CrossRefGoogle Scholar
  21. 21.
    Mohal S, Kumar H (2017) Parametric optimization of multiwalled carbon nanotube-assisted electric discharge machining of Al-10%SiCp metal matrix composite by response surface methodology. Mater Manuf Process 32:263–273.  https://doi.org/10.1080/10426914.2016.1140196 CrossRefGoogle Scholar
  22. 22.
    Janmanee P, Muttamara A (2012) Surface modification of tungsten carbide by electrical discharge coating (EDC) using a titanium powder suspension. Appl Surf Sci 258:7255–7265CrossRefGoogle Scholar
  23. 23.
    Prabhu S, Vinayagam BK (2010) Analysis of surface characteristics of AISI D2 tool steel material using electric discharge machining process with single wall carbon nano tubes. Int J Eng Technol 2:35–41.  https://doi.org/10.7763/IJET.2010.V2.96 CrossRefGoogle Scholar
  24. 24.
    Prabhu S, Vinayagam BK (2013) AFM nano analysis of inconel 825 with single wall carbon nano tube in die sinking EDM process using taguchi analysis. Arab J Sci Eng:1–15Google Scholar
  25. 25.
    Mandal A, Dixit AR, Das AK, Mandal N (2016) Modeling and optimization of machining Nimonic C-263 Superalloy using multicut strategy in WEDM. Mater Manuf Process 31:860–868CrossRefGoogle Scholar
  26. 26.
    Guu YH (2005) AFM surface imaging of AISI D2 tool steel machined by the EDM process. Appl Surf Sci 242:245–250.  https://doi.org/10.1016/j.apsusc.2004.08.028 CrossRefGoogle Scholar

Copyright information

© Springer-Verlag London Ltd., part of Springer Nature 2018

Authors and Affiliations

  1. 1.Department of Mechanical EngineeringIndian Institute of Technology (Indian School of Mines)DhanbadIndia

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