Enhanced temper rolling model including Prandtl-Reuss decomposition

Temper rolling is one of the final steps in the production of high quality cold rolled steel strip, where material properties, flatness and surface texture are tailored to the specific requirements of the customers. Modern temper rolling mills have to be able to cover the production of a wide product mix range including also very hard and thin strips at superior quality (temper degree, surface texture, flatness etc.). Offline models for the simulation of temper rolling primarily serve as dimensioning tools for the optimisation of temper rolling processes and mills in terms of force and power requirements, throughput and strip quality. For this purpose, FEM (Finite Element Method) models based on commercial multi-purpose software packages are unacceptable due to their extensive calculation costs. Therefore, tailor made, highly specialised mathematical models with drastically lower calculation efforts are essential.