Design of cooling sections for heat treatment based

Kotrbáček Petr - VUT v Brně (Czech Republic)

Laboratory measurements make it possible to determine the Heat Transfer Coefficient as a function of position and surface temperature for various cooling configurations. The evaluation of HTC makes it possible to identify the influence of various parameters on cooling. The design and setting of the cooling parameters directly affect the microstructure, hardness and mechanical properties of the materials. Furthermore, it is possible to use the experimentally obtained dependence of HTC on the surface temperature and position for realistic numerical simulations of cooling processes, as well as for the optimization of the design of cooling sections. The article describes the research methodology of investigation and designs of cooling sections for heat treatment of long products (sheets, rails, pipes, etc.) Using the presented method, it is also possible to study cooling with very high gradients (cooling rate 1000 °C/s).

Keywords: heat treatment, heat transfer coefficient, Leidenfrost temperature, steel, heat transfer, nozzle, mechanical properties, run-out table, rail, tube

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