The Calculation of Roll Force and Torque in Cold Strip Rolling with Tensions

From an approximate theory, equations are derived for roll force and torque with and without front and back tensions applied to the strip. Where tensions are applied the calculations for each pass take about an hour; without tensions, and with the use of curves given in this paper, they can be carried out in ten minutes. The accuracy of the calculations without tensions is within about 15 per cent. At the end of the paper there is a discussion of the energy relationships in rolling. At present this should be considered as speculative in character.