Research On The Head Bending Of Plate Rough Mill Based On Dynamic Explicit FEM

Plate is an important product which is essential for the national economy development. In recent years, a lot of plate factories in our country have carried on renewal of their outmoded equipments to enhance their products' quality and function. However, following the upgrade of the apparatus some questions have appeared, one of the most outstanding problems is the bending on the heads of the work-pieces. It will cause such questions as diminishing productivity and reducing the products' quality and outputs. In essence, the reason of the bending on the heads of the work-pieces is that the rolling asymmetry of the upper and lower departments while rolling. The factors that cause dissymmetric rolling is numerous, such as different temperatures between upper and lower surface of work-Piece, different friction conditions on the surface of the upper and lower rollers, different linear velocity of the upper and lower rollers, different diameters of the upper and lower rollers and so on. In the actual rolling process, these factors often interweave together, make the head warping more complicated.This dissertation carried the dynamic explicit finite element software which performed the bending on heads of the dissymmetrical work-pieces. This article analyzed the factors which influenced bending on the heads of the work-pieces by setting up the physical modal of bending on the heads of the plate and found out the relation between the factors, such as, different diameters of roller, velocity of roller, different temperature between upper and lower surfaces of the plate, friction conditions on the surface between the plate and roller, and bending on the heads of the plate, then it offered the basis for formulation of the rolling craft system. It will be facility, enhance efficiency and save the cost of production by using the dynamic explicit finite element software.