Increasing the Working Limit of Extruded Aluminum Tubes During Draw Bending by Introducing a Wiper Die

摘要

Aluminum alloy sections are widely utilized in many applications such as in general structures and automotive components. Owing-the increasing complexity of these components there is an increasing demand for highly curved thin wall sections. Therefore, reliable bending processes are required-manufacture such components without undesirable deformations such as wrinkling and folding occurring during bending. To prevent undesirable deformations and predict when they might occur, it is necessary-generate much data from various forming configurations in which process parameters are varied. In this paper, the authors concentrate on the problem of bending square-section thin-walled tubes and use finite element analysis-generate the data required-predict working limits. Two different tube materials (A6063S-O and A6063S-T5) were used-investigate the relationship between deformation behavior and material properties. Moreover, the effect of using a wiper die on the working limit of the extruded aluminum sections was investigated.