FEM Simulation of the Roll Deformation of Six-high CVC Mill in Cold Strip Rolling
Accurate prediction for the deformation of the roll system is a key to improve the accuracy of the preset model and on-line control model of strip cold rolling processes. A non-linear finite element contact model to simulate the roll system deformation has been developed for the CVC-6h cold strip rolling mill. The elastic-plastic deformation of the strip and the elastic deformation of the rolls are coupled in this model by the contact and friction between the roll and strip. The effects of the work roll bending force, the middle roll bending force and the middle roll transverse shifting on the roll gap profile have been analyzed systematically. Results show that the work roll bending is the most effective mean in these strip shape controlling means. The calculated roll gap profile is close to the measured values. This model can improve the accuracy of final products through a correct preset model and on-line control model of strip shape.
Research on Single-Side Long Edge of Hot Rolled Strip Caused by Asymmetrical Stiffness of Mill Stand
To analyze and solve the problem of single-side long edge of hot rolled strip in certain domestic factory, the asymmetrical deformation of rolls and strip in asymmetrical stiffness mill stand based on slit beam model, the strip profile and rolling force distribution at the exit of asymmetric stiffness stand mill were calculated using influence function method. Considering the character of in-site equipment and technology, a scheme of adjusting load distribution in finishing mill was made and the experiment was applied. Comparison of strip profile between new load distribution and the old one shows that the method can solve single-side long edge problem well.
Frank Must Marry Money: Men, Women, and Property in Trollope's Novels
There is a continuing debate about the extent to which women in the 19th century were involved in economic life. The paper uses a reading of a number of novels by the English author Anthony Trollop...