Modelling and simulation of a bending process for S34MnV steel

Abstract

To investigate the hot deformation behaviour of S34MnV steel, hot compression tests in different deformation conditions were done. According to the experimental data, a constitutive equation was established and a mathematical model for dynamic recrystallisation was established to predict the volume fraction of dynamic recrystallisation. To reveal the plastic deformation, the bending process for a large S34MnV marine crank was simulated by Deform-3D. The stress and strain field of the bending process was obtained and analysed based on the simulation. Finally, to study the effect of the bending process on the crank, a bending process of a crank produced with a hydropress in the factory was studied. The microstructure and mechanical properties in three different positions of the bending crank were analysed. It was concluded that the bending process would reduce the uniformity of the microstructure and mechanical properties, owing to the nonuniformity of the deformation.