Stretch Form Tools

'STRETCH FORMING PROCESS'  -The basic principle of this technology is to stretch the material beyond it's elastic limit in order to reach the plastic mode so that permanent elongation with no spring back is obtained. This principle can be applied to metallic sheets and profiles and in various directions depending on the final part shape. Stretch forming is widespread in the aerospace industry. It allows the manufacture of large parts, often made of aluminium alloy, with lower tooling costs than those of draw form tooling, as a single run is required to form the part, on a single former.