A predictive model for the evolution of the thermal conductance at the casting–die interfaces in high pressure die casting

Anwar Hamasaiid; Gilles Dour; T. Loulou; M.S. Dargusch

A predictive model for the evolution of the thermal conductance at the casting–die interfaces in high pressure die casting

Anwar Hamasaiid ¹ Gilles Dour ¹ T. Loulou M.S. Dargusch

Abstract : An analytical model is proposed to predict the time varying thermal conductance at the casting–die interface during solidification of light alloys during High pressure Die Casting. Details of the topography of the interface between the casting and the die are included in the model through the inclusion of solid surface roughness parameters and the mean trapped air layer at the interface. The transitory phase of the interfacial thermal conductance has been related to the degradation of contact as solidification progresses through the casting thickness. The modelled time varying thermal conductance showed very good agreement with experimentally determined values for different alloy compositions and casting geometries. The analysis shows that the parameters that govern the thermal conductance are different for the first stage of contact compared to the second stage of contact when the alloy begins to solidify.

Document type :

Journal articles

Domain :

Engineering Sciences [physics]

Complete list of metadatas

https://hal-mines-albi.archives-ouvertes.fr/hal-01660869
Contributor : Imt Mines Albi Ecole Nationale Supérieure Des Mines d'Albi-Carmaux <>
Submitted on : Monday, December 11, 2017 - 2:42:16 PM
Last modification on : Friday, October 11, 2019 - 8:22:58 PM

A predictive model for the evolution of the thermal conductance at the casting–die interfaces in high pressure die casting

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A predictive model for the evolution of the thermal conductance at the casting–die interfaces in high pressure die casting

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