Performance of bunched-electrode in EDM

Lin Gu, Lei Li, Wansheng Zhao, K. P. Rajurkar

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Scopus citations


This paper aims to introduce the performance of bunched-electrode for die-sinking EDM. Bunched-electrode was formed by bunching numerous hollow cell-electrodes together to generate an electrode in which end surface matches the final surface of the mould cavity. FEM analysis and experiments were conducted to demonstrate the feasibility and effectiveness of bunched electrode in ED machining. Experiments show that while machining with bunched-electrode, it is feasible to apply a much higher peak current to achieve higher MRR. Meanwhile, a special phenomenon called shallow radial craters in machining with bunched-electrodes was observed and analyzed. One possible reason may be that the plasma columns in the gap are distorted outwards by strong inner pressure flushing.

Original languageEnglish (US)
Title of host publicationAdvances in Precision Engineering
PublisherTrans Tech Publications Ltd
Number of pages5
ISBN (Print)9780878492565
StatePublished - 2010

Publication series

NameKey Engineering Materials
Volume447 448
ISSN (Print)1013-9826
ISSN (Electronic)1662-9795


  • Bunched electrode
  • CFD simulation
  • EDM
  • Radial shallow crater

ASJC Scopus subject areas

  • General Materials Science
  • Mechanics of Materials
  • Mechanical Engineering


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