FIELD: registration of real values of tension efforts of rolled material at controlling minimum tension efforts in hot rolling mill. SUBSTANCE: in order to avoid errors caused by incorrect measurements when tension stresses are determined at controlling minimum tension efforts, load current curve is drawn in first stand for rolling without tension. Separate measured values of load current curve corresponding to initial value are used in next stands as reference values for determining real values of tension efforts synchronously with time periods of passing rolled material. Smooth zones of load current curve occurred in next stands in the result of deformation of rolled material in gap between rolls from stand to stand are simulated with the aid of compensating factors for successive stands and they are taken into account at correcting respective real values of tension efforts. EFFECT: enhanced reliability and accuracy of method. 3 cl, 3 dwg
