Required Energy Calculation by Hot Rolling of Tubes and of the Main Drive Motors Power for a Stretch Reducing Mill

This work shows the methodology regarding the calculation of the deformation resistance and of the required energy and power for hot reducing of tubes on a stretch reducing mill (SRM) with the final aim of an optimal sizing of the mill drives. Effective calculations are shown as methodology examples for the case of stretch reducing of a Φ123x3.9mm blank into a Φ 49x3.25mm tube. In order to evaluate the validity and accuracy of the suggested calculation methodology, the calculation results regarding the required reducing energy have been compared with the experimental data collected at a SRM in operation on which the research has been performed as well as with the experimental data presented in the literature. Key-Words: stretch reducing mill, hot reducing tubes, energy, drive motor