MATHEMATICAL MODEL OF THE DEFORMATION SITE DURING COLD ASYMMETRICAL ROLLING OF BIMETALLIC STRIPS

Abstract

The research is aimed at studying the asymmetric rolling of thin bimetallic strips from dissimilar alloys from a theoretical point of view. This article presents a mathematical model of the process of cold asymmetric rolling of thin strips of heterogeneous alloys, based on the energy-static method. The deve¬lopment of this model is a scientific novelty of the work. In turn, the main goal of the developed model is to ensure the cor-rect prediction of the numerical value of the curvature of bimetallic strips from hard-to-form alloys at the outlet of the deformation site. At the same time, the model allows you to calculate the rolling force acting on each working roll and the kinematic parameters of the process. The model's operability was tested using the example of calculations of rolling a bimetallic aluminum-titanium strip at three different speed ratios. The results of the study showed that the mathematical model is correct and, in the future, can serve as the basis for writing a digital product that allows predicting the curvature of thin bimetallic strips obtained by asymmetric rolling.