EUROPEAN CONGRESS AND EXHIBITION ON ADVANCED MATERIALS AND PROCESSES - EUROMAT 2021

The paper is focused on the experimental research of the heat transfer during in-line heat treatment. Real distribution of the heat transfer coefficient (HTC) is necessary for the numerical simulation and optimization of the cooling process. The methodology proposed by the Heat Transfer and Fluid Flow Laboratory, Brno University of Technology is typically used to determine the HTC on the position and the surface temperature of material in the applications of heat treatment. The paper presents examples of design of cooling sections for in-line heat treatment of long products (plates, rails, tubes and other profiles). The methodology enables identifying the effect of nozzle water jets on the heat transfer coefficient, microstructure, hardness and mechanical properties of materials.