By hot rolling of a thin strip in a continuous finishing train BROADBAND MILL

摘要

1. A method of hot rolling thin strips in a continuous finishing mill section broadband mill comprising compression strip in several passes with concomitant control by measuring and / or calculation of a number of mathematical models of a rolling parameters: the relative reduction of the stands, the geometric parameters and the finished rolled peal, tension roll cages, metal temperature, properties of the rolled metal at the deformation temperature, rolling speed, force, torque and power of the rolling parameters reflecting the current from -being surface rolls on the basis of the adjustment and the results of these actions relative reductions in the stands and band tension between the stands, with the proviso maintain the monitored parameters within the limits dictated by the technological and operational constraints, characterized in that the rolling start temperature is set within 1060-1080 ° C, a relative reduction in the first and second stand and the third stand is set to end, based on the condition of the rolling load force in the range of 80-85% of the maximum permissible value rolling force in each of the stands, the relative reduction in the last stand set in the range of 12-17%, is further controlled by calculating the average values ​​of normal contact stresses in the penultimate and the last stand, and a relative reduction in the penultimate stand established on the basis of the condition that the average values normal contact stresses in the penultimate and last stands, the remaining portion of the total relative reduction partitioned between intermediate stands equally. ! 2. The method of claim 1, by