Effect of micro-powder suspension and ultrasonic vibration of dielectric fluid in micro-EDM processes-Taguchi approach

Gunawan Setia Prihandana, Muslim Mahardika, M. Hamdi, Y. S. Wong, Kimiyuki Mitsui

Research output: Contribution to journalArticlepeer-review

161 Citations (Scopus)

Abstract

Solutions are needed for increasing the material removal rate without degrading surface quality in micro-electrical discharge machining (μ-EDM). This paper presents a new method that consists of suspending micro-MoS2 powder in dielectric fluid and using ultrasonic vibration during μ-EDM processes. The Taguchi method is adopted to ascertain the optimal process parameters to increase the material removal rate of dielectric fluid containing micro-powder in μ-EDM using a L18 orthogonal array. Pareto analysis of variance is employed to analyze the four machining process parameters: ultrasonic vibration of the dielectric fluid, concentration of micro-powder, tool electrode materials, and workpiece materials. The results show that the introduction of MoS2 micro-powder in dielectric fluid and using ultrasonic vibration significantly increase the material removal rate and improves surface quality by providing a flat surface free of black carbon spots.

Original languageEnglish
Pages (from-to)1035-1041
Number of pages7
JournalInternational Journal of Machine Tools and Manufacture
Volume49
Issue number12-13
DOIs
Publication statusPublished - Oct 2009
Externally publishedYes

Keywords

  • Material removal rate
  • Micro-electric discharge machining
  • Micro-powder suspended in dielectric fluid
  • Taguchi method
  • Ultrasonic vibration of dielectric fluid

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