Resumo

RABBAH, N.  e  BENASASSI, B.. Modelling and simulation of the heat transfer along a cold rolling system. Lat. Am. appl. res. [online]. 2009, vol.39, n.1, pp.79-83. ISSN 0327-0793.

In the industry of flat rolled sheet product, strip crown and shape has been one of the most important factors for quality assurance, productivity improvement, cost effectiveness, and customer satisfaction. The transient work roll profile influences load distribution and imprints an undesirable profile on rolled strip. Precise prediction of the work roll thermal profile facilitates adjustment of crown control devices for crown compensation and shape correction. Many studies, including numerical methods, statistical equations, and analytical solutions are proposed in the literature. This article proposes a semi-analytical solution for the work roll subjected to predict transient thermal profiles of work rolls with multiple cooling / heating zones. It was derived from the heat balance equation using the finite difference method and Runge-Kutta method that are two semi recursive analytical solutions, developed to update, the work roll temperature distribution within a very short computing time. The model suggested is used for the numerical simulations in rolling. In this paper, presenting the equations describing a system part is interesting. An evaluation of this work is made through discussing the results and finally, some prospects are evoked.

Palavras-chave : Modelling; Cold Rolling; Thermal Profile; Work Roll; Heat Exchange.

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