The experimental study results of the rolling force distribution along length of copper (M0) strips with an initial size of 3×25×200 mm, with the use of various roll lubricants on a laboratory double-roll mill 150×235 are presented. The quantitative analysis of the influence of the applied lubricants (SP3, I40 and sunflower oil) on the change in force and sizes along length of the rolled strips with a compression of 20% was carried out. The adequacy analysis of the application of the stress state coefficients proposed by A. I. Tselikov and other scientists in the models for calculating pressure and rolling force of thin strips was done. The equation for determining the average metal pressure on the rolls was refined, taking into account the influence of the external parts and stiffness of the strip on the deformation focus when rolling the strips with various oils and lubricants. It is shown that the proposed equations provide a more accurate calculation of pressure and force in cold rolling of thin strips and bands made of copper and its alloys, that is especially urgently for mills not equipped with control systems of rolling forces.
Shatalov et al. (Fri,) studied this question.