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Pulse Electrochemical Micromachining of Tungsten Carbide

[+] Author Affiliations
Abishek Balsamy Kamaraj, Rachael Dyer, Murali M. Sundaram

University of Cincinnati, Cincinnati, OH

Paper No. MSEC2012-7238, pp. 415-421; 7 pages
doi:10.1115/MSEC2012-7238
From:
  • ASME 2012 International Manufacturing Science and Engineering Conference collocated with the 40th North American Manufacturing Research Conference and in participation with the International Conference on Tribology Materials and Processing
  • ASME 2012 International Manufacturing Science and Engineering Conference
  • Notre Dame, Indiana, USA, June 4–8, 2012
  • Conference Sponsors: Manufacturing Engineering Division
  • ISBN: 978-0-7918-5499-0
  • Copyright © 2012 by ASME

abstract

Pulse electrochemical micromachining (PECMM) is a non-conventional manufacturing method suitable for the production of micro-sized components on a wide range of conductive materials. PECMM improves dimensional accuracy and simplifies tool design in machining hard, high strength, and heat resistant materials into complex shapes. Extremely small interelectrode gaps are required in PECMM for better dimensional accuracy. However, excessively small interelectrode gaps may lead to complications like short-circuiting. This imposes the need for better control of the PECMM process. In this study a feedback controlled PECMM system was developed for the electrochemical micromachining of tungsten carbide. It was noticed that while, higher ratios of return velocity to feed rate is preferred as it reduces the number of current spikes, very high value of this ratio results in poor machining rates due to increased interelectrode gap. Therefore, this ratio of return velocity to feed rate may be used to optimize the PECMM process.

Copyright © 2012 by ASME

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