| The parameters of groove is important in designing roll-forging mould. In this paper, a kind of special shaped groove is presented to replace the usual rectangular groove, it can improve the uniformity of material distribution, and decrease loading. Three-dimensional rigid-plastic FEM has been used to simulate the deformation process of pass rolling, and the effect of the system of special shaped and hat groove during deformation of billet is researched. This paper analyzes the velocity field of material flow, stress-strain field, the characteristics of the temperature field, the dynamic evolvement process as well as the force-time curve of mould and mould damage. Application shows that the system of special shaped and hat groove can improve the uniformity of materials distribution and increase broadening quantity of spring plates in the process of automobile front-axle roll-forging. |
full paper (pdf, 752 Kb)