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Material Removal Rate, Kerf, and Surface Roughness of Tungsten Carbide Machined with Wire Electrical Discharge Machining

Authors
  • Shah, Aqueel1
  • Mufti, Nadeem A.1
  • Rakwal, Dinesh2
  • Bamberg, Eberhard2
  • 1 University of Engineering and Technology, Department of Industrial and Manufacturing Engineering, Lahore, Pakistan , Lahore (Pakistan)
  • 2 University of Utah, Precision Design Laboratory, Department of Mechanical Engineering, Salt Lake City, UT, USA , Salt Lake City (United States)
Type
Published Article
Journal
Journal of Materials Engineering and Performance
Publisher
Springer US
Publication Date
Apr 20, 2010
Volume
20
Issue
1
Pages
71–76
Identifiers
DOI: 10.1007/s11665-010-9644-y
Source
Springer Nature
Keywords
License
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Abstract

In this article, the effects of varying seven different machining parameters in addition to varying the material thickness on the machining responses such as material removal rate, kerf, and surface roughness of tungsten carbide samples machined by wire electrical discharge machining (WEDM) were investigated. The design of experiments was based on a Taguchi orthogonal design with 8 control factors with three levels each, requiring a set of 27 experiments that were repeated three times. ANOVA was carried out after obtaining the responses to determine the significant factors. The work piece thickness was expected to have a major effect on the material removal rate but showed to be significant in the case of surface roughness only. Finally, optimization of the machining responses was carried out and models for the material removal rate, kerf, and surface roughness were created. The models were validated through confirmation experiments that showed significant improvements in machining performance for all investigated machining outcomes.

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