Abstract
In aluminum extrusion with porthole dies, the welding of material seams represents a major manufacturing problem inasmuch it affects the integrity of the final product. The way the problem is treated is yet not consistent in literature, and different quality parameters for welding are still used in practice.
In this work a new parameter for evaluating the welding quality is proposed. Its effectiveness is tested in comparison with other parameters by means of a parametric FEM analysis in which the distribution of pressure and velocity along the welding line is considered. The investigated geometry is a simple two-seams plane-strain die. Many die shapes have been considered, by varying the position and the shape of the leg, in order to understand the sensitivity of the parameters in a wide range of operative conditions. The solutions are also significant for evaluating process load, productivity and die-stresses.
This is a preview of subscription content, log in via an institution.
Buying options
Tax calculation will be finalised at checkout
Purchases are for personal use only
Learn about institutional subscriptionsPreview
Unable to display preview. Download preview PDF.
References
Meier B., “Die design and material flow”, Baumjarten Journal, DGM informationsgesellschaft, Oberursel, Germany (1989), pp. 171–178 (in german)
Akeret “Extrusion welds - quality aspects are now center stage” Proceedings fifth Int. Aluminum Extrusion Technology Seminar, ET 1992, vol.2, pp.319–336
Plata M. and Piwnik J., “Theoretical and experimental analysis of seam weld formation in hot extrusion of aluminum alloys”, Proc. seventh international aluminum extrusion technology seminar ET 2000, 1, pp. 205–211
Donati L. and Tomesani L., Analysis of material flow and welding in aluminum extrusion of hollow sections, V AITEM Conference, Bari, September 2001, pp. 678–688
Verlinden B., Suhadi A., Delaey L., “A generalized constitutive equation for an AA6060 Aluminium Alloy”, Scripta Metallurgica e Materialia, Vol. 28, 1993, 1441–1446
Lefsta M., Reiso O., Johnsen V., “Flow of the billet surface in aluminum extrusion” Proceedings fifth Int. Aluminum Extrusion Technology Seminar, ET 1992, vol. 2, pp. 503–517
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2002 Springer-Verlag Wien
About this paper
Cite this paper
Donati, L., Tomesani, L. (2002). Simulation of Welding Conditions in Porthole die Extrusion. In: Kulianic, E. (eds) AMST’02 Advanced Manufacturing Systems and Technology. International Centre for Mechanical Sciences, vol 437. Springer, Vienna. https://doi.org/10.1007/978-3-7091-2555-7_41
Download citation
DOI: https://doi.org/10.1007/978-3-7091-2555-7_41
Publisher Name: Springer, Vienna
Print ISBN: 978-3-7091-2557-1
Online ISBN: 978-3-7091-2555-7
eBook Packages: Springer Book Archive