Investigation on the Effect of Input Parameters on Surface Quality During Rotary Tool Near-Dry EDM

  • Vineet Kumar Yadav
  • RamverEmail author
  • Pradeep Kumar
  • Akshay Dvivedi
Conference paper
Part of the Lecture Notes in Intelligent Transportation and Infrastructure book series (LNITI)


This paper presents an experimental study on rotary tool near-dry EDM (RT-ND-EDM) of high-speed steel using a two-phase mixture of water and air as a dielectric medium. The RT-ND-EDM is an environmentally friendly process variant of EDM. Parametric investigation was performed to understand the effect of various input parameters on the quality of machined surface. The experimental results revealed that surface roughness (SR) increased with an increase in peak current and pulse on time. An increase in gas pressure first decreased and then increased the SR, and finally SR decreased with increased in liquid flow rate. In addition, analysis of RT-ND-EDMed surface using FE-SEM technique revealed that the machined surface had irregularities such as micro-cracks, debris deposition, micro-holes, micropores.


EDM RT-ND-EDM Surface roughness Surface integrity 


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Copyright information

© Springer Nature Singapore Pte Ltd. 2020

Authors and Affiliations

  • Vineet Kumar Yadav
    • 1
  • Ramver
    • 1
    Email author
  • Pradeep Kumar
    • 1
  • Akshay Dvivedi
    • 1
  1. 1.Mechanical and Industrial Engineering DepartmentIndian Institute of Technology (IIT)RoorkeeIndia

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