LAUSR

We present the results of experimental investigations of the distribution of deformation indicators and rolling forces along the length of brass (L63) strips in a 150 × 235 two-roll mill equipped with a microcontroller system for high-precision measurements of loads acting upon the rolls. The results of the quantitative analyses of changes in the sizes of strips and rolling forces on stationary and nonstationary sections along the strip length are presented. A significant effect of the outer parts of the strip on the rolling force and the pressure of the metal upon the rolls is established. On the basis of the experimental results, we propose an equation for the evaluation of the influence of the outer parts of the strip on the rolling force and pressure. The equation for the mean pressure of the metal upon the rolls is improved with regard for the influence of the outer parts and the stiffness of the strip on the site of deformation in the process of thin-sheet rolling. It is shown that the proposed equations make it possible to increase the accuracy of evaluation of pressure and determination of rolling forces along the length of thin strips.