Modeling approach for the determination of material flow and welding conditions in porthole die extrusion with gas pocket formation

Publikation: Beiträge in SammelwerkenAufsätze in KonferenzbändenForschungbegutachtet

Authors

The material flow in porthole dies is of crucial importance with regard to the seam weld quality in aluminum extrusion. Thus, experimental as well as numerical investigations on the effect of die geometry on the material flow were conducted. The experimental tests were performed on a 10 MN laboratory extrusion press. During the experimental trials, the extrusion ratio was varied by means of exchangeable die plates. Since the modular die allows removal of the aluminum in the welding chamber as well as in the feeders after the process, the material flow could be inspected in detail. The experimental results were used to improve the accuracy of FEA simulations, which were also conducted by commercial software. An attempt was made to improve the result quality of Eulerian FEA model regarding the simulation of an extrusion process with a gas pocket in the welding chamber. The influence of the modeling approach on the predicted material flow and on the contact pressure was analyzed and finally linked to the seam weld quality.

OriginalspracheEnglisch
TitelThe Current State-of-the-Art on Material Forming
HerausgeberRicardo Alves de Sousa, Robertt Valente
Anzahl der Seiten7
Band554-557
VerlagScientific.Net
Erscheinungsdatum2013
Seiten787-793
ISBN (Print)978-3-03785-719-9
ISBN (elektronisch)978-3-03826-100-1
DOIs
PublikationsstatusErschienen - 2013
Extern publiziertJa
Veranstaltung16th Conference on Material Forming - ESAFORM 2013 - Aveiro University, Aveiro, Portugal
Dauer: 22.04.201324.04.2013
Konferenznummer: 16
https://amcaonline.org.ar/pipermail/congresos/2012-July/000442.html

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