Deformation Analysis Research Of Rail In Universal Rough Rolling

Railway transportation are developing quickly all over the world with its advantages of security, rapid, large volume, energy-saving and pro-environment. In recent years, railway transportation develops to high-speed and heavy-load, so it is more and more strict to require of steel rail. Exploiting new steel of steel rail, arranging producing process rationally, improving quality and operating life of steel rail have become to the target of steel rail producing.During the production of steel rail, rolling is a very important process. Using universal rolling technology, there are a lot of advantages. Such as, large compression ratio of rail head and rail base, up and down symmetry in forming process, small inner residual stress, mill rolls adjusting flexible, little concentrated wear of pass, high surface quality and dimensional accuracy of product. So, universal rolling technology has taken the place of original pass production.However, because of the dissymmetry in Y axis of steel rail, large thickness difference rail head and rail base and passivity of vertical rolls, shape of rail head vertical rolls reduction directly influence cross-section extension of steel rail. This becomes subjects of steel rail rolling research. With the development of computer technology and numerical simulation technology, numerical simulation technology has taken place of costly and time-consuming test to some extent, which reduces or eliminates test mistakes, reduces time and cost of product developer. This technology has already widely applied in metal forming field.This article founds FEM analog model of steel rail universal rolling by adopting Rigid-Plastic FEM software DEFORM-3D. Through analyzing different shape of rail head vertical rolls gets some valuable conclusions which have certain reference value to steel rail universal rough rolling.