Multi-Objective Optimization of Surface Roughness and Electrode Wear in EDM Cylindrical Shaped Parts

Article Preview

Abstract:

The purpose of this work is to find an optimal combination of the input parameters when electrical discharge machining (EDM) cylindrical shaped parts so that both the surface roughness and the electrode wear are minimum. In this study, four input parameters including the pulse on time, the pulse off time, the current, and the serve voltage were taken into account. Experimental plan was designed based on L9 orthogonal array. Also, Taguchi method and Grey Relational Analysis (GRA) were joined for solving the multiobjective optimization problem and to find optimum input parameters. Experiments with optimal input parameters were performed for proving the predicted model. The experimental results of the surface roughness and the electrode wear matched with the calculated model. This indicates the proposed models can be used for practice.

You might also be interested in these eBooks

Info:

Periodical:

Materials Science Forum (Volume 1018)

Pages:

59-64

Citation:

Online since:

January 2021

Export:

Price:

* - Corresponding Author

[1] Malhotra, P., et al., Experimental investigation and effects of process parameters on EDM of Al7075/SiC composite reinforced with magnesium particles. Materials Today: Proceedings, (2019).

DOI: 10.1016/j.matpr.2019.11.069

Google Scholar

[2] Barenji, R.V., H.H. Pourasl, and V.M. Khojastehnezhad, Electrical discharge machining of the AISI D6 tool steel: Prediction and modeling of the material removal rate and tool wear ratio. Precision Engineering, 2016. 45: pp.435-444.

DOI: 10.1016/j.precisioneng.2016.01.012

Google Scholar

[3] Pant, P. and P.S. Bharti, Electrical Discharge Machining (EDM) of nickel-based nimonic alloys: A review. Materials Today: Proceedings, (2019).

DOI: 10.1016/j.matpr.2019.09.007

Google Scholar

[4] Kliuev, M., et al., Influence of energy fraction in EDM drilling of Inconel 718 by statistical analysis and finite element crater-modelling. Journal of Manufacturing Processes, 2019. 40: pp.84-93.

DOI: 10.1016/j.jmapro.2019.03.002

Google Scholar

[5] Büttner, H., R. Roth, and K. Wegener, Limits of Die-Sinking EDM for micro Structuring in W300 Steel with pure Copper Electrodes. Procedia CIRP, 2018. 77: pp.646-649.

DOI: 10.1016/j.procir.2018.08.186

Google Scholar

[6] Büttner, H., et al., A comparison between micro milling pure copper and tungsten reinforced copper for electrodes in EDM applications. Precision Engineering, 2019. 60: pp.326-339.

DOI: 10.1016/j.precisioneng.2019.08.018

Google Scholar

[7] Surekha, B., et al., Surface characteristics of EN19 steel materials by EDM using Graphite mixed Dielectric medium. Materials Today: Proceedings, 2018. 5(9): pp.17895-17900.

DOI: 10.1016/j.matpr.2018.06.117

Google Scholar

[8] Uhlmann, E. and D.C. Domingos, Automated dressing of graphite electrodes for electrical discharge machining (EDM) of seal slots in turbine components. Procedia Manufacturing, 2016. 6: pp.45-52.

DOI: 10.1016/j.promfg.2016.11.007

Google Scholar

[9] Kishan, B., et al., Development of mathematical model for metal removal rate on EDM using copper & brass electrodes. Materials Today: Proceedings, 2018. 5(2): pp.4345-4352.

DOI: 10.1016/j.matpr.2017.12.001

Google Scholar

[10] Rajamanickam, S. and J. Prasanna, TOPSIS on High Aspect Ratio Electric Discharge Machining (EDM) of Ti-6Al-4V using 300 µm brass rotary tube electrodes. Materials Today: Proceedings, 2018. 5(9): pp.18489-18501.

DOI: 10.1016/j.matpr.2018.06.191

Google Scholar