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 (Journal Indexed in SCI) identifier

  • Publication Type: Article / Article
  • Volume: 70 Issue: 7
  • Publication Date: 2011
  • Title of Journal : JOURNAL OF SCIENTIFIC & INDUSTRIAL RESEARCH
  • Page Numbers: pp.493-499
  • Keywords: Electrical discharge machining (EDM), Finite Element Model (FEM), Heat affected zone, DISCHARGE MACHINING PROCESS, THEORETICAL-MODELS

Abstract

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.