A numerical method for predicting depth of heat affected zone in EDM process for AISI H13 tool steel

Shabgard M. R., Seyedzavvar M., Oliaei S. N. B., Ivanov A.

JOURNAL OF SCIENTIFIC & INDUSTRIAL RESEARCH, vol.70, no.7, pp.493-499, 2011 (SCI-Expanded) identifier

  • Publication Type: Article / Article
  • Volume: 70 Issue: 7
  • Publication Date: 2011
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.493-499
  • Keywords: Electrical discharge machining (EDM), Finite Element Model (FEM), Heat affected zone, DISCHARGE MACHINING PROCESS, THEORETICAL-MODELS
  • Middle East Technical University Affiliated: Yes


This study presents a finite element model (FEM) to model temperature distribution for AISI H13 tool steel workpiece in electrical discharge machining (EDM) at different machining parameters (pulse current, pulse on-time, temperature-sensitive material properties, size of heat source, and material flushing efficiency). Scanning electron microscopy (SEM) with energy dispersive x-ray (EDX) and micro-hardness tests were used to validate accuracy of FEM predictions. Increasing pulse on-time leads to a higher depth of heat affected zone and increasing pulse current results in a slight decrease of depth of heat affected zone. There is a good agreement between experimental and numerical results.