Shape Control Simulation on 4-High CVC Mill

The computation model of shape and crown on 4 high CVC mill was established by combining the stream surface strip element method for analyzing three-dimensional plastic deformation of strip and the influence coefficient method for elastic deformation of rolls,and the simulation of the shape and crown control on 4-high CVC hot strip mill was conducted.The simulated results indicate that the influence of the shifting of CVC work roll on shape and crown is very large,and the shifting of work roll can be used to preset shape and crown.The influence of the bending force of work roll on shape and crown is smaller,and it is suitable to use the bending force of work roll for shape and crown adjustment on line.With the increase of strip width,the exit crown of strip increases firstly and de creases then,and the roll gap becomes smoother increasingly.Meanwhile,the transverse difference of front tension stress decreases firstly and increases then.