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Investigation an assisting electrode powder mixed electrical discharge machining of nonconductive ceramic

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Abstract

This research is aimed to describe a new approach for machining zirconia ceramics. The purpose is to develop an electrical discharge machining with assisting electrode and dielectric mixed with graphite powder to enable processing of nonconductive material and improve machining performance. Methodology that used in this paper is Box-Behnken design. Three controllable parameters were selected, namely discharge current, pulse duration, and graphite powder concentration. The material removal rate, surface roughness, and relative tool wear were chosen as machining performances. The proposed approach uses the concept of response surface methodology to develop mathematical models. Although the discharge current and pulse duration proved to be the most influential input parameters, the finding that resulted in this research is the positive effect of graphite powder on machining performance. The proposed approach provides a very beneficial option of EDM input parameters to achieve the performance improvement: increase in material removal rate, reduction in surface roughness and relative tool wear.

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Data availability

The data underlying this article are available in the article.

Abbreviations

EDM:

Electrical discharge machining

AE:

Assisting electrode

AEEDM:

Assisting electrode electrical discharge machining

(AE + PM) EDM:

Assisting electrode powder mixed electrical discharge machining

HAE:

Hybrid assisting electrode

MRR :

Material removal rate

TWR :

Tool wear rate

R a :

Surface roughness

I e :

Discharge current

t i :

Pulse duration

U 0 :

Voltage

GR :

Concentration of graphite powder

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Funding

This paper has been supported by the Ministry of Education, Science and Technological Development through the project no. 451–03-68/2020–14/200156: “Innovative scientific and artistic research from the FTS (activity) domain.”

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Authors and Affiliations

  1. Faculty of Technical Sciences, Department for Production Engineering, University of Novi Sad, Trg D. Obradovica 6, 21000, Novi Sad, Serbia

    Dragan Rodic, Marin Gostimirovic, Milenko Sekulic, Borislav Savkovic & Branko Strbac

Authors
  1. Dragan Rodic
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  2. Marin Gostimirovic
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  3. Milenko Sekulic
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  4. Borislav Savkovic
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  5. Branko Strbac
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Contributions

D. Rodic and M. Gostimirovic conceived of the presented idea. D.R. developed the theory and performed the computations. D. Rodic and M. Gostimirovic verified the mathematical methods. M. Sekulic and B. Savkovic conceived and planned the experiments. B. Strbac assisted with all necessary measurements. All authors provided critical feedback and helped shape the research, analysis, and manuscript.

Corresponding author

Correspondence to Dragan Rodic.

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The authors declare that they have no conflict of interest.

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Rodic, D., Gostimirovic, M., Sekulic, M. et al. Investigation an assisting electrode powder mixed electrical discharge machining of nonconductive ceramic. Int J Adv Manuf Technol 118, 2419–2435 (2022). https://doi.org/10.1007/s00170-021-08061-8

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  • DOI: https://doi.org/10.1007/s00170-021-08061-8

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