摘要：The hot extrusion experiments have been performed in an industrial plant to point out the critical aspects of this plastic deformation technology and the related metallurgical aspects. Two types of special cross sections have been extruded, then the presence of cracks, surface defects and the homogeneity of the microstructures have been evaluated and related with the most significant aspects of the adopted technological route. The temperature of the billet and of the deformed material have been measured by an optical digital pyrometer at the different steps of the processes. A first thermal simulation based on the Fourier equation has been implemented to understand the possible influence of the heat transmission and of the thermal homogeneity on the quality of the final product. Significant indications have been reached about the relations among the adopted technological parameters and the quality of the final results. Moreover, some indications about the enthalpy developed by the industrial process of hot deformation have been determined and can be used in a next future to perform more precise simulation of the deformation process.
