Analysis and Mathematical Simulation of Formation Regularities of Strip Transversal Profile during Hot Rolling

The transversal profile features of sheet products have been analyzed. A significant influence of edge drops on the accuracy and metal loss upon cutting into strip has been revealed. Partial mathematical models have been proposed for analyzing physical factors determining the formation of the grinding profile, roll bend, thermal crown, and flattening in contact between the rolls and strip; as a resultant model of active roll generatrix, they served as a superposition impact of the factors. For improving its accuracy, simplified nonlinear dependences of the factors influencing the profile have been proposed, which are used as basic functions for estimating actual profiles. The proposed models reflect peculiar features of profile generation, which help forecast the non-uniform thickness of strips, scheduling and optimization of rolling during strip cutting.