Influence of material properties on near dry-EDM process: The discussion of research for titanium grade 2 and Inconel 625 alloy
ŻYRA Agnieszka, SKOCZYPIEC Sebastian, BOGUCKI Rafał
download PDFAbstract. Dry EDM machining with external workpiece cooling is one of the possible modifications of dry EDM process, which enables to reduce the negative impact of EDM machining on the environment and on the machine tool operator. At the same time, it is possible to obtain relatively good machining accuracy and surface quality. Due to the problems with the effective heat dissipation from the machining gap, the application of dry-EDM is still limited to micromachining. In this paper the comparison and discussion of dry-EDM technological factors for two hard to machine materials: Inconel 625 and Titanium Grade 2 have been presented. The tests were carried out in carbon dioxide as a dielectric supplied to the machining gap through the channel in the workpiece electrode. To improve the process effectivity additional workpiece cooling were also applied, however the presence of fluid in machining area makes the process near dry-EDM. The input machining parameters were pulse time, machining voltage, current amplitude and inlet gas pressure. The main aim of this work was to show the significance of the type of machined material on the material removal rate, and surface layer (i.e. roughness, morphology and microhardness). The results analysis will be discussed considering differences in physical properties of machined materials.
Keywords
Electro Discharge Machining, EDM, Dry EDM, Inconel 625 Alloy, Titanium Grade 2
Published online 4/19/2023, 10 pages
Copyright © 2023 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA
Citation: ŻYRA Agnieszka, SKOCZYPIEC Sebastian, BOGUCKI Rafał, Influence of material properties on near dry-EDM process: The discussion of research for titanium grade 2 and Inconel 625 alloy, Materials Research Proceedings, Vol. 28, pp 1663-1672, 2023
DOI: https://doi.org/10.21741/9781644902479-179
The article was published as article 179 of the book Material Forming
Content from this work may be used under the terms of the Creative Commons Attribution 3.0 license. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.
References
[1] F. Klocke, A. Klink, D. Veselovac, D.K. Aspinwall, S.L. Soo, M. Schmidt, J. Schilp, G. Levy, J.-P. Kruth, Turbomachinery component manufacture by application of electrochemical, electro-physical and photonic processes, CIRP Ann. – Manuf. Technol. 63 (2014) 703-726. https://doi.org/10.1016/j.cirp.2014.05.004
[2] R. Świercz, Modelowanie i optymalizacja obróbki elektroerozyjnej materiałów trudnoobrabialnych, Warszawa: Oficyna Wydawnicza Politechniki Warszawskiej, 2019.
[3] M. Kumar, S. Datta, R. Kumar, Electro-discharge Machining Performance of Ti–6Al–4V Alloy: Studies on Parametric Effect and Phenomenon of Electrode Wear, Arab. J. Sci. Eng. 44 (2019) 1553–1568. https://doi.org/10.1007/s13369-018-3632-1
[4] B.B. Pradhan, M. Masanta, B.R. Sarkar, B. Bhattacharyya, Investigation of electrodischarge micro-machining of titanium super alloy, Int. J. Adv. Manuf. Technol. 41 (2009) 1094. https://doi.org/10.1007/s00170-008-1561-y
[5] S. Kumar Sahoo, N. Thirupathi, K. Saraswathamma, Experimental Investigation and Multi-Objective Optimization of Die sink EDM Process Parameters on Inconel-625 alloy by using Utility Function Approach, Mater. Today Proc. 24 (2020) 995-1005. https://doi.org/10.1016/j.matpr.2020.04.412
[6] N.K. Singh, Y. Singh, A. Sharma, R. Prasad, Experimental investigation of flushing approaches on EDM machinability during machining of titanium alloy, Mater. Today Proc. 38 (2020) 139-145. https://doi.org/10.1016/j.matpr.2020.06.165
[7] A. Descoeudres, Characterization of electrical discharge machining plasmas (2006).
[8] A. Banu, M.Y. Ali, Electrical Discharge Machining (EDM): A Review, Int. J. Eng. Mater. Manuf. 1 (2016) 3-10. https://doi.org/10.26776/ijemm.01.01.2016.02
[9] B. Jha, K. Ram, M. Rao, An overview of technology and research in electrode design and manufacturing in sinking electrical discharge machining, J. Eng. Sci. Technol. Rev. 4 (2011) 118-130. https://doi.org/10.25103/JESTR.042.02
[10] K.P. Rajurkar, M.M. Sundaram, A.P. Malshe, Review of Electrochemical and Electrodischarge Machining, Procedia CIRP, 6, (2013) 13-26. https://doi.org/10.1016/j.procir.2013.03.002
[11] A. Miernikiewicz, Doświadczalno-teoretyczne podstawy obróbki elektroerozyjnej (EDM), Kraków: Politechnika Krakowska, 2000.
[12] A. Żyra, R. Bogucki, S. Skoczypiec, An influence of titanium alloy Ti10V2Fe3Al microstructure on the electrodischarge process efficiency, Arch. Metall. Mater. 64 (2019) 1005-1010. https://doi.org/10.24425/amm.2019.129487
[13] B.K. Baroi, Jagadish, P.K. Patowari, A review on sustainability, health, and safety issues of electrical discharge machining, J Braz. Soc. Mech. Sci. Eng. 44 (2022) 59. https://doi.org/10.1007/s40430-021-03351-4
[14] A. Żyra, S. Skoczypiec, R. Bogucki, Selected Aspects of Surface Integrity of Inconel 625 Alloy after Dry-EDM in Carbon Dioxide, Key Eng. Mater. 926 (2022) 1681-1688. https://doi.org/10.4028/p-o1809g
[15] R. Roth, F. Kuster, K. Wegener, Influence of oxidizing gas on the stability of dry electrical discharge machining process, Procedia CIRP, 6 (2013) 338-343. https://doi.org/10.1016/j.procir.2013.03.029
[16] A. Żyra, W. Bizoń, S. Skoczypiec, Primary research on dry electrodischarge machining with additional workpiece cooling, in AIP Conf. Proc. 2017 (2018) 020034. https://doi.org/10.1063/1.5056297
