Numerical Simulation of Controlled Rolling of Heavy Plates with Low Compression Ratio

Abstract

The numerical simulation method was adopted to study the multi-pass controlled rolling deformation process of the 400mm thick slab and the changing rule of the internal strain field. It was tried to simulate the center strain changes of the thick slab by two deformation processes which were the first rolling deformation process under a uniformed temperature and the second rolling deformation process after the waiting. It was shown that in the rolling process of super-thick steel plate both the first rolling process and the second rolling process could control the deformation of the central region. When the macro pressure rate was the same, the thinner was the slab, the greater pressure rate in the central region. The amount of deformation of both the first process and the second one was the same as 20%. The maximum strain was located in nearly one-tenth thickness of the surface layer and the minimum was in the center.