Numerical Simulation of Radial-Axial Ring Rolling Process and Combined Control of Rolls
Ring rolling process is a highly nonlinear and unsteady hot forming process under the action of thermodynamic coupling.The process parameters are numerous and the rolls control are difficult.There is still a lack of efficient and convenient numerical research methods for ring rolling process.Taking the rolling curve as the fundamental variable,the kinematics and dynamics relationships of each roll were established as the theoretical basis.Then based on FORGE software,a finite element model was established according to Φ3000mm CNC ring rolling mill.Through the combined control of rolls,the weak stiffness defects such as eccentricity and ellipse can be predicted successfully.The reliability of the FE model was verified by full size ring rolling test of Inconel718 alloy.The relative error of the predicted result is less than 3%,and this model has been applied to the development of typical parts.
ring rollingnumerical simulationroll controlInconel718 alloy