MODELING OF THIN STRIP COLD ROLLING AND TEMPER ROLLING PROCESS WITH INFLUENCE FUNCTION METHOD

摘要

A mathematical model for thin strip cold and temper rolling process has been developed using influence function method. By solving the equations describing the roll gap phenomena in a unique procedure and considering more influence factors, the model offers significant improvement in the accuracy, robustness and generality of solution for thin strip cold and temper rolling conditions. The relationship between the shape of roll profile and parameters that influence the roll force was discussed. Calculation results show that any change that increases the roll force may result in or enlarge a central flat region in the deformation zone. Applied to temper rolling process, the model can well predict not only the rolling load but also the large forward slip. Therefore, the measured forward slip, together with the measured roll force, was used to calibrate the model. The model was installed in the setup computer of a temper rolling mill to make parallel setup calculation. The calculation results showed good agreement with the measured data and the validity and precision of the model have been proved.