The deformation theoretical modeling analysis for the plate during the asynchronous rolling

Asynchronous rolling can increase the shear strain, reduce the rolling pressure and save the energy, and achieve the goal of improving the quality of the plate and reducing costs. As a key factor influencing the quality of the plate, the effective strain is often obtained by experiments and numerical calculation, which is complex and time-consuming. Therefore, a theoretical calculation model for the asynchronous rolling is established. The deformation zone is divided into the rigid-plastic-rigid zone, and the flow function of the boundary condition is obtained by the principle of equal metal flow. Then, the rolling power model is established by the linearization integration method, which is the key to the theoretical modeling. The length of the top and bottom deformation zones can be obtained as unknown parameters by optimizing the power model. Finally, the effective strain is calculated according to the optimization results, so as to complete the establishment of the effective strain model. Based on the established model, it is proved by experiments and finite element method. Compared to the experiment results, the results show that the minimum and maximum relative errors are 1.38% and 8.89%, which can be accepted for production. The research can propose reference for actual production and improve actual production efficiency.