Analysis of the influence of back-pull in drawing process by the finite element method

Wire drawing is a continuous manufacturing process. In practice, equipments apply tensile forces both to the exit of the die and to the entry of the following one. The latter is named backwards force, and its application influences positively some aspects of the process. In this study the drawing process has been simulated for different values of back tension, by the finite element method. The influence of the back-pull on several variables has been analysed and some results have been compared with those obtained by the slab method. Also, results have been contrasted with experimental data found in the literature. The principal aim of this work is to evaluate what effects the application of back-pull has on variables like the die stress or the power invested in the process.