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Influence of Different Dielectrics and Machining Parameters for Electrical Discharge-Assisted Milling of Titanium Alloy

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Abstract

The machinability of the hybrid machining method for electrical discharge assisted milling (EDAM) has been validated in previous research. The influence of three different dielectrics (kerosene, EDM oil, and deionized water) on the performance of the EDAM was investigated in this study. An analysis of the discharged signal, surface morphology, and elemental composition of the electrode under different machining parameters reveals the influence of different dielectrics. The results show that compared with deionized water, kerosene and EDM oil have a higher discharge frequency. After long-term discharge, debris and carbides will be generated during processing, which will affect the microhardness and discharge stability of the processed material. Among the result of EDAM, EDM oil produced the best surface integrity, with surface roughness values 34.93%, 87.92%, and 121.68% lower than those of kerosene, deionized water, and conventional milling (CM), respectively. The results show that EDAM reduces the microhardness after machining by reducing the plastic deformation of the surface.

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Authors and Affiliations

  1. School of Mechanical Engineering, Yeungnam University, 280 Daehak-ro, Gyoungsan-si, Gyeongsangbuk-do, 38541, Republic of Korea

    Moran Xu, Rendi Kurniawan, Jielin Chen & Tae Jo Ko

  2. College of Mechanical and Electrical Engineering, Hunan University of Science and Technology, Xiangtan, 411201, China

    Moran Xu & Changping Li

Authors
  1. Moran Xu
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  2. Changping Li
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  3. Rendi Kurniawan
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  4. Jielin Chen
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  5. Tae Jo Ko
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Contributions

MRX： Experiments, Software, Writing-Original draft preparation; CPL： Conceptualization and Methodology; RK： Measurement and data analysis; JLC： Data curation; TJK： Supervision, Supervision, Funding Acquisition. All authors read and approved the final manuscript.

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Correspondence to Changping Li or Tae Jo Ko.

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The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper. The authors declare the following financial interests/personal relationships which may be considered as potential competing interests.

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Xu, M., Li, C., Kurniawan, R. et al. Influence of Different Dielectrics and Machining Parameters for Electrical Discharge-Assisted Milling of Titanium Alloy. Int. J. Precis. Eng. Manuf. 23, 1095–1112 (2022). https://doi.org/10.1007/s12541-022-00689-0

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  • DOI: https://doi.org/10.1007/s12541-022-00689-0

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