Analysis of surface topography in electrical discharge machining of ABNT M2 high speed steel - doi: 10.4025/actascitechnol.v33i1.6763

Authors

  • Jean Robert Pereira Rodrigues Universidade Estadual do Maranhão Author
  • Claudionor Cruz Universidade Federal de Uberândia Author
  • Sinésio Domingues Franco Universidade Federal de Uberlândia Author

DOI:

https://doi.org/10.4025/actascitechnol.v33i1.6763

Keywords:

electrical discharge machining, dielectric fluids, craters and surface topography

Abstract

The electrical discharge machining is an exceptional procedure for machining complex shapes into electric conductor materials, mainly for those of high hardness, difficult of machining by traditional processes. At each discharge, a crater is formed in the material and a small crater is formed in the electrode. From every molten material produced in each discharge, only 15%, or less is removed through the dielectric liquid. The remaining of molten material solidifies forming a wrinkled surface. The characteristics of the obtained surface, as overlap of craters, globules of sullage, “chimneys", bubbles (formed when trapped gases are released through the resolidified material), are revealed through an analysis by scanning electron microscopy. The proposed study aimed to examine the effect of several dielectric fluids, on the surface topography and material removal rate, in workpiece of high speed steel (ABNT M2), during the electrical discharge machining.

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Author Biographies

  • Jean Robert Pereira Rodrigues, Universidade Estadual do Maranhão
    Departamento de Engenharia Mecânica/Centro de Ciências Tecnológicas/UEMA / Írea: Engenharia Mecânica.
  • Claudionor Cruz, Universidade Federal de Uberândia
    Faculdade de Engenharia Mecânica - UFU
  • Sinésio Domingues Franco, Universidade Federal de Uberlândia
    Faculdade de Engenharia Mecânica - UFU

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Published

2011-02-04

Issue

Vol. 33 No. 1 (2011)

Section

Mechanical Engineering

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How to Cite

Analysis of surface topography in electrical discharge machining of ABNT M2 high speed steel - doi: 10.4025/actascitechnol.v33i1.6763. (2011). Acta Scientiarum. Technology, 33(1), 27-30. https://doi.org/10.4025/actascitechnol.v33i1.6763

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