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Fabrication of Complex Micro Channels by Micro Electric Discharge Milling (µ-ED Milling)

[+] Author Affiliations
Vaibhav Shukla

Hindustan Aeronautics Limited, Lucknow, UP, India

Syed Nadeem Akhtar, S. Kanmani Subbu, J. Ramkumar

Indian Institute of Technology Kanpur, Kanpur, UP, India

Paper No. IMECE2013-64031, pp. V02BT02A072; 7 pages
  • ASME 2013 International Mechanical Engineering Congress and Exposition
  • Volume 2B: Advanced Manufacturing
  • San Diego, California, USA, November 15–21, 2013
  • Conference Sponsors: ASME
  • ISBN: 978-0-7918-5619-2
  • Copyright © 2013 by ASME


Micro electric discharge milling (μ-ED milling) is an effective and economic process for the fabrication of micro channels. In the present work, the bulk approach of μ-ED milling is being attempted to make complex shaped micro channels. For a straight channel the bulk approach of μ-ED milling was found to be a successful approach. A tungsten tool of diameter 500 μm was used to fabricate semi-circular micro channels on EN-24 steel. Important machining parameters had earlier been optimized to make straight channels on EN-24 steel by the same method. The effect of geometrical parameters such as radius of curved channel and aspect ratio on MRR and TWR were studied by full factorial experimental design for single pass at optimized machining parameters. Finally complex shapes like T-type and serpentine channels were made by using optimized conditions of straight and curved channels by bulk approach with multiple passes of μ-ED milling.

Copyright © 2013 by ASME



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