Proceedings of the Korean Society of Precision Engineering Conference (한국정밀공학회:학술대회논문집)

  • 2005.06a
  • /
  • Pages.422-425
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  • 2005
  • /
  • 2005-8446(pISSN)
Korean Society for Precision Engineering (한국정밀공학회)
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Prediction of the Heat-Affected Zone in the Micro Electric Discharge Machining

미세 방전가공에서의 열영향층 예측

  • Kim T.G. (School of Mechanical Engineering, Yonsei University) ;
  • Min B.K. (School of Mechanical Engineering, Yonsei University) ;
  • Lee S.J. (School of Mechanical Engineering, Yonsei University)
  • Published : 2005.06.01
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Abstract

This study predicts the heat-affected zone (HAZ) after electrical discharge machining. To predict HAZ, the temperature distribution is calculated using FEM. Heat flux is calculated from electrical energy, and it can be assumed Gaussian distribution. Plasma channel expands as time goes. Copper and NAK80 are used as the workpiece material. The depth of HAZ in simulation is determined by temperature distribution. The simulation results were compared with a developed actual single discharge crater. Through investigating the cross section of simulated & actual craters, the depth of HAZ in simulation and experiment are compared. Simulation model can predict the crater shape.

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