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Type: Artigo de periódico
Title: Factors affecting solidification thermal variables along the cross-section of horizontal cylindrical ingots
Author: de Souza, EN
Cheung, N
Santos, CA
Garcia, A
Abstract: During solidification the mathematical analysis of heat flow depends on the transient heat transfer coefficient at the metal/mold interface. The analysis of heat transfer behavior along the cross-section of radial geometries is necessary for a better control of solidification in conventional foundry and continuous casting processes. For this purpose, a water-cooled solidification experimental apparatus was developed, and experiments were carried out with Sn-Pb alloys with different melt superheats. The transient metal/mold heat transfer coefficients were determined by a numerical-experimental fit of casting thermal profiles based on inverse heat transfer calculations. The results have shown a significant variation in heat flow conditions along the cylinder cross-section provoked by the simultaneous action of solidification thermal contraction and the gravitational effect. Experimental equations correlating heat transfer coefficients as it power function of time along the cross-section of cylindrical horizontal castings of Sn-Pb alloys are proposed. (c) 2005 Elsevier B.V. All rights reserved.
Subject: solidification
metal/mold heat transfer coefficient
horizontal cylinders
Sn-Pb alloys
Country: Suíça
Editor: Elsevier Science Sa
Citation: Materials Science And Engineering A-structural Materials Properties Microstructure And Processing. Elsevier Science Sa, v. 397, n. 41671, n. 239, n. 248, 2005.
Rights: fechado
Identifier DOI: 10.1016/j.msea.2005.02.044
Date Issue: 2005
Appears in Collections:Unicamp - Artigos e Outros Documentos

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