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2017 | Vol. 11, no 3 | 72--79
Tytuł artykułu

EDM of aluminum alloy 6061 using graphite electrode using paraffin oil and distilled water as dielectric medium

Treść / Zawartość
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
EDM machining of Al 6061 was performed under varying conditions of pulse current and pulse duration. Graphite was used as an electrode material with distilled water and paraffin oil as two different dielectric mediums. The aim is to characterize the surface integrity produced as a result of EDM machining under both varying electrical and non-electrical parameters as it is important in determining the service life of EDM machined components. The vertical, horizontal and corner surfaces are studied independently for each single set of conditions. The average white layer thickness (AWLT) and surface roughness was found to be dependent on pulse current values and pulse duration. The dielectric medium also has an influence on the thickness and nature of white layer. It was found that the thickness and nature of the white layer formed from distilled water is different from that of paraffin oil. New methods of AWLT and surface roughness measurement through an optical microscope are described. The surface roughness method developed was calibrated against an identical surface roughness tester. Finally, material removal rate, tool wear rate, the presence of micro cracks, voids and globules were compared for different conditions and conclusions were drawn according to the actual physical conditions during machining.
Wydawca

Rocznik
Strony
72--79
Opis fizyczny
Bibliogr. 21 poz., fig., tab.
Twórcy
autor
  • University of Engineering and Technology, 47050 Taxila, Pakistan
  • University of Engineering and Technology, 47050 Taxila, Pakistan
autor
  • University of Engineering and Technology, 47050 Taxila, Pakistan
  • shahid.mehmood@uettaxila.edu.pk
autor
  • University of Engineering and Technology, 47050 Taxila, Pakistan
Bibliografia
  • 1. Arooj, S., M. Shah, S. Sadiq, S.H.I. Jaffery, and S. Khushnood, Effect of Current in the EDM Machining of Aluminum 6061 T6 and its Effect on the Surface Morphology. Arabian Journal for Science and Engineering. 39(5): 2014. 4187-4199.
  • 2. Chakraborty, S., V. Dey, and S.K. Ghosh, A Review on the Use of Dielectric Fluids and their Effects in Electrical Discharge Machining Characteristics. Precision Engineering. 40: 2015. 1-6.
  • 3. Garg, R.K., K.K. Singh, A. Sachdeva, V.S. Sharma, K. Ojha, and S. Singh, Review of research work in sinking EDM and WEDM on metal matrix composite materials. The International Journal of Advanced Manufacturing Technology. 50(5-8): 2010. 611-624.
  • 4. Ho, K.H. and S.T. Newman, State of the Art Electrical Discharge Machining (EDM). International Journal of Machine Tools and Manufacture. 43(13): 2003. 1287-1300.
  • 5. Jha, A.K., K. Sreekumar, and P.P. Sinha, Role of electro-discharge machining on the fatigue performance of 15–5PH stainless steel component. Engineering Failure Analysis. 17(5): 2010. 1195-1204.
  • 6. Kunieda, M., S. Furuoya, and N. Taniguchi, Improvement of EDM Efficiency by Supplying Oxygen Gas into Gap. CIRP Annals - Manufacturing Technology. 40(1): 1991. 215-218.
  • 7. Kunieda, M., M. Yoshida, and N. Taniguchi, Electrical Discharge Machining in Gas. CIRP Annals - Manufacturing Technology. 46(1): 1997. 143-146.
  • 8. Leão, F.N. and I.R. Pashby, 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.
  • 9. Lee, H.-T., F.-C. Hsu, and T.-Y. Tai, Study of surface integrity using the small area EDM process with a copper–tungsten electrode. Materials Science and Engineering: A. 364(1-2): 2004. 346-356.
  • 10. Lee, S.H. and X. Li, Study of the surface integrity of the machined workpiece in the EDM of tungsten carbide. Journal of Materials Processing Technology. 139(1-3): 2003. 315-321.
  • 11. M. Pawade, M. and S. S. Banwait, A Brief Review of Die Sinking Electrical Discharging Machining Process towards Automation. American Journal of Mechanical Engineering. 1(2): 2013. 43-49.
  • 12. Mehmood, S., R.A. Pasha, and A. Sultan, Effect of Electric Discharge Machining on Material Removal Rate and white layer composition. Mehran University Research Journal of Engineering & Technology. 36(1): 2017. 45-54.
  • 13. Mehmood, S., M. Shah, R.A. Pasha, S. Khushnood, and A. Sultan, Influence of electric discharge machining on fatigue limit of high strength aluminum alloy under finish machining. Journal of the Chinese Institute of Engineers. 40(2): 2017. 118-125.
  • 14. Mehmood, S., A. Sultan, N.A. Anjum, W. Anwar, and Z. Butt, Determination of residual stress distribution in high strength aluminum alloy after edm. Advances in Science and Technology Research Journal. 11(1): 2017. 29-35.
  • 15. Muthuramalingam, T. and B. Mohan, A review on influence of electrical process parameters in EDM process. Archives of Civil and Mechanical Engineering. 15(1): 2015. 87-94.
  • 16. Pandey, A. and S. Singh, Current research trends in variants of Electrical Discharge Machining: A review. International Journal of Engineering Science and Technology. 2(6): 2010. 2172-2191.
  • 17. Ramasawmy, H., L. Blunt, and K.P. Rajurkar, Investigation of the relationship between the white layer thickness and 3D surface texture parameters in the die sinking EDM process. Precision Engineering. 29(4): 2005. 479-490.
  • 18. Shabgard, M., S.N.B. Oliaei, M. Seyedzavvar, and A. Najadebrahimi, Experimental investigation and 3D finite element prediction of the white layer thickness, heat affected zone, and surface roughness in EDM process. Journal of Mechanical Science and Technology. 25(12): 2012. 3173-3183.
  • 19. Shabgard, M., M. Seyedzavvar, and S.N.B. Oliaei, Influence of Input Parameters on the Characteristics of the EDM Process. Strojniški Vestnik – Journal of Mechanical Engineering. 57(9): 2011. 689-696.
  • 20. Tai, T. and S. Lu, Improving the Fatigue Life of Electro-Discharge-Machined SDK11 Tool Steel via the Suppression of Surface Cracks. International Journal of Fatigue. 31(3): 2009. 433-438.
  • 21. Wang, J. and F. Han, Simulation model of debris and bubble movement in consecutive-pulse discharge of electrical discharge machining. International Journal of Machine Tools and Manufacture. 77: 2014. 56-65.
Uwagi
Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę (zadania 2017)
Typ dokumentu
Bibliografia
Identyfikatory
Identyfikator YADDA
bwmeta1.element.baztech-5516d9bd-dd93-4f0f-bda9-de76414aa47c
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