STRIP ROLLING METHOD Russian patent published in 2000 - IPC

FIELD: rolled stock production, possibly thick strip rolling process and equipment. SUBSTANCE: method comprises steps of correcting rolling modes according to results of measuring characteristics of deformation state; in first pass predicting rolling effort during stable stage of non-stable rolling period; increasing the last due to small initial value Vo of rolling speed; in order to achieve increased rolling speed, measuring current value P_r(X) of rolling effort and comparing it with reference value P_v; when value P_r(X) achieves P_v calculating two threshold values P1 and P2; comparing P_r with received values P1 and P2 and correcting rolling modes 1) when P_v is less than P1 by applying signal for reversing rolls, 2) when P1 is higher than P2 or equal to it by applying signal for accelerating rolls, 3) when P_v is less than P1 and P1 is less than P2 also applying signal for accelerating rolls and changing rolling speed in first pass; predicting rolling effort in next pass on base of effort values received in previous pass according to condition of equal values of specific pressure; carrying out correction process by changing reduction schedule or deformation speed. EFFECT: reliable protection of rolling mill against technological overloads.