Publicação: Modeling heat transfer in die milling
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2014-03-01
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Elsevier B.V.
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This paper compares two different thermal models by solving computationally direct-inverse problem to estimate the net heat flux and convective coefficient when milling hardened AISI H13 die steel. Global and tri-dimensional transient models were developed and solved by Finite-Volume and Gauss Methods, respectively. Two cutting speeds were considered in dry finishing operation. Experimental temperatures measured by part-embedded thermocouples fed the inverse-problem, which were compared to theoretical temperatures given by direct-problem. Both models are able to estimate the thermal properties for milling processes. Tr-dimensional model approaches global one when using mean temperature of thermocouples. The models agreed with others in the literature. (C) 2013 Elsevier Ltd. All rights reserved.
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Applied Thermal Engineering. Oxford: Pergamon-elsevier Science Ltd, v. 64, n. 1-2, p. 108-116, 2014.
