Effect of Different Dielectrics on Material Removal Rate, Electrode Wear Rate and Microstructures in EDM

Misbah Niamat, Shoaib Sarfraz, Haris Aziz, Mirza Jahanzaib, Essam Shehab, Wasim Ahmad, Salman Hussain

Research output: Contribution to journalConference articlepeer-review

15 Citations (Scopus)


Diesinker electric discharge machining is widely used non-conventional technique for making high precision and complex shaped parts. Dielectrics and electrical parameters were considered as the main factors for EDM performance. In this paper, the effects of pulse-on-time (μs) and current (ampere) were evaluated for performance measures using kerosene and water as dielectrics. A comparison was performed for both dielectrics in terms of material removal rate (mm3/min), electrode wear rate (mm3/min), and microstructures. Aluminum 6061 T6 alloy was used as material for this research due to its extensive use in aerospace and automotive industries. Experiments were designed using Taguchi L9 orthogonal array (OA). Time series graphs were plotted to compare material removal rate and electrode wear rate. Microstructures were taken by scanning electron microscope to analyze the surface produced in terms of cracks, globules and micro-holes. Higher material removal rate and lower electrode wear were achieved with kerosene dielectric. The novelty of this research work, apart from its practical application, is that Aluminum 6061 T6 alloy is used as work material to compare the performance of dielectrics (kerosene and distilled water).

Original languageEnglish
Pages (from-to)2-7
Number of pages6
JournalProcedia CIRP
Publication statusPublished - Jan 1 2017
Externally publishedYes
Event27th CIRP Design Conference 2017 - Cranfield, United Kingdom
Duration: May 10 2017May 12 2017


  • Dielectric
  • Electric Discharge Machining
  • Electrode Wear Rate
  • Material Removal Rate
  • Microstructures

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Industrial and Manufacturing Engineering

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