from the conferences organized by TANGER Ltd.
The paper presents laboratory physical modeling of the seamless tubes production, specifically the first step of the Mannesmann production process, the so-called punching. A “Universal rolling mill” at MATERIAL & METALLURGICAL RESEARCH Ltd. was used for experiments. The experimental material was micro-alloyed steel. The tests were carried out at four different heating temperatures and at different rpm speeds of the working rolls. The other settings of the rolling mill remained the same. In terms of the geometrical parameters, the biggest necking of the punched sample (preferably at both ends) was observed with increasing temperature and strain rate. The torque decreased with increasing temperature and with lower speed of working rolls. The punching time and the total current power consumption decreased with increasing temperature and with a higher deformation rate.
Keywords: Laboratory physical modelling, punching, seamless tubes, micro-alloyed steel, temperature, rpm speeds of the working rolls© This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.