Method for Determining the Optimum Counter-Flexing Force of Working Rolls during Sheet Rolling

The method of determination of the force of counter flexure of the working rolls was designed, ensuring improvement of the degree of flatness of cold rolled strips with due regard to the influence of unevenness of distribution of inter-rolls linear load. On the basis of the analysis of numerical realization of this method an essential influence of the width of the rolled strips upon the optimal value of the force of counter flexure was found out. Also, it was suggested to approximate the connection between increments of the force of counter flexure with linear equations, the application of which is promote to improvement efficiency of systems of automatic adjustment of shape and profile at rolling of sheets. For the condition of 4-stand cold rolling mill the values of transmission coefficients depending on widths of rolled strips were determined.