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New Developments in Extrusion of Profiles with Variable Curvatures

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New Developments in Extrusion of Profiles with Variable Curvatures
and Cross-Sections

Alessandro Selvaggio, Sami Chatti, Nooman Ben Khalifa, A. Erman Tekkaya
Institute of Forming Technology and Lightweight Construction,
Technische Universität Dortmund, Dortmund, Germany

Track: VALUE-ADDED PROCESSES - Process Improvements

ABSTRACT—The paper describes new developments in extrusion processes for the reduction of
process chains, and the improvement of the flexibility of the extrusion process itself. Hereby, the
presented and discussed technologies cover the extrusion of curved profiles and the extrusion of
profiles with variable cross-sections. Besides the process principles and advantages, several
results of numerical and experimental investigations are given in order to show the motivation for
fundamental and application-oriented research in the field of extrusion technology. Concerning
the curved profile extrusion, the improvement of product quality is focused in this paper. Hereby,
the influencing parameters like die deformation during the extrusion process are measured to
draw conclusions on the product accuracy. Furthermore, first results on the extrusion of profiles
with variable cross-section are shown in this paper. Here, the focus was placed on the
development of the die and the process forces. Keywords: Curved profile extrusion, extrusion with variable cross-sections.

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