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Modelling and Optimization of a Batch Furnace for Hot Stamping

[+] Author Affiliations
M. G. Twynstra, K. J. Daun, E. Caron

University of Waterloo, Waterloo, ON, Canada

N. Adam, D. Womack

Promatek Research Centre, Brampton, ON, Canada

Paper No. HT2013-17248, pp. V004T14A012; 9 pages
  • ASME 2013 Heat Transfer Summer Conference collocated with the ASME 2013 7th International Conference on Energy Sustainability and the ASME 2013 11th International Conference on Fuel Cell Science, Engineering and Technology
  • Volume 4: Heat and Mass Transfer Under Extreme Conditions; Environmental Heat Transfer; Computational Heat Transfer; Visualization of Heat Transfer; Heat Transfer Education and Future Directions in Heat Transfer; Nuclear Energy
  • Minneapolis, Minnesota, USA, July 14–19, 2013
  • Conference Sponsors: Heat Transfer Division
  • ISBN: 978-0-7918-5550-8
  • Copyright © 2013 by ASME


Non-uniform heating during the austenization stage of hot-stamping can lead to inhomogeneous mechanical properties, coating thickness variations, and residual stresses in the stamped components. This paper presents a heat transfer model of an electrically-powered batch austenization furnace, with the objective of diagnosing and correcting factors that cause non-uniform blank heating. Radiation view factors are calculated with the Monte Carlo method. Convection with the furnace air and conduction through the blank and furnace door is also incorporated into a transient global domain energy balance. The model incorporates temperature- and phase-dependent radiative and thermophysical properties of the steel blanks and ceramic insulation of the furnace walls. The heat transfer model is validated with data obtained from instrumented blanks in an actual production cycle. The model is then used to optimize heater settings for the existing furnace using simulated annealing.

Copyright © 2013 by ASME



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