Investigation of heat transfer dependencies in quenching of extrusion profiles based on experiment and FEM simulation

Abstract

Abstract. The objective of this study is to establish a comprehensive method, devoid of computational fluid dynamics (CFD) calculations, for determining the surface heat transfer coefficient during spray cooling. This technique enables the derivation of the heat transfer coefficient's dependence on the temperature of the cooled surface by utilizing known data regarding the number, relative positioning, and catalog characteristics of nozzles. Additionally, adjustable parameters of the quenching system such as the pressure and flow rates of water and air are considered in the methodology. Implemented within the commercial finite element (FE) package QForm UK, this technique is validated using independent experimental data that faithfully replicates real production conditions encountered during the quenching of extruded profiles made from aluminum alloys.