Abstract
The theoretical background of metal forming is improving rapidly, finite-element-based methods, especially, giving an important impact in this area. Despite these developments, the production of difficult — and hence industrially interesting — parts still requires a lot of experience and ingenuity. Particularly, cold and warm extrusion is a domain of metal forming in which theoretical methods cannot aid the production of extrudates that are either of complex shape or made of less-common materials or even both. The present paper aims to give mostly unknown technological details of the production of such workpieces. The described know-how is the outcome of approximately 300 man-years experience gathered at the Institut für Umformtechnik of the Universität Stuttgart. The examples given represent the state-of-the-art of extrusion technology.
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