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Study on Thermal Deformation Behavior of Wire Electrical Discharge Machining Thin-Wall Components

[+] Author Affiliations
Zhen Zhang, Yanming Zhang

Huazhong University of Science Technology, Wuhan, China

Paper No. IMECE2017-70846, pp. V002T02A006; 8 pages
doi:10.1115/IMECE2017-70846
From:
  • ASME 2017 International Mechanical Engineering Congress and Exposition
  • Volume 2: Advanced Manufacturing
  • Tampa, Florida, USA, November 3–9, 2017
  • Conference Sponsors: ASME
  • ISBN: 978-0-7918-5835-6
  • Copyright © 2017 by ASME

abstract

The geometric error is an important indicator for the product performance in the Wire Electric Discharge Machining (WEDM) process, however, few studies have focused on the geometric error caused by thermal deformation, which can reach as high as 6.5% when machining thin-wall components. In this paper, some complex thermal deformation phenomena were found and analyzed in wire electric discharge machining different materials under different conditions (such as different thickness, various process parameters). Based on a large number of experiment, the reasons for these thermal deformation were figured out by studying the effect of various process parameters on thermal deformation and mechanical properties of thin-wall components, and the results revealed that the water pressure and pulse duration are two most significant factor influencing the thermal deformation. It’s concluded that a long pulse duration for rough cut and a short pulse duration for trim cut under low water pressure is recommended to decrease the geometric error caused by thermal deformation.

Copyright © 2017 by ASME

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