Abstract
For the process design of hydroforming in the “hot” temperature range, reliable data are necessary to describe the material behaviour at elevated temperatures under the occurring loads of hot hydroforming processes. State-of-the-art technologies for the investigation of material behaviour, like uniaxial tensile tests or hydraulic bulge tests, do not provide enough similarity with the process of hot hydroforming. This paper describes a new testing technique, capable of realizing high process temperatures and constant strain rates. It represents a further development of the established technology of tube bulge tests. The hardware is described, its functionality is proven and mathematical approaches for the calculation of stress/strain-curves from experimental data are presented.
Similar content being viewed by others
References
Neugebauer R, Altan T, Geiger M, Kleiner M, Sterzing A (2006) Sheet metal forming at elevated temperatures. Ann CIRP 55(2):793–816. doi:10.1016/j.cirp.2006.10.008
Lange K (1984) Umformtechnik Bd. 1: Grundlagen. Springer, Berlin
Werle T (1994) Superplastische Aluminiumblechumformung unter besonderer Beachtung der Formänderungsgeschwindigkeit. DGM Informationsgesellschaft, Oberursel
Groche P, Dörr J (2005) Tube hydroforming at locally elevated temperatures. Prod Eng XII(1):63–66
Neugebauer R, Seifert M (2005) Innenhochdruckumformen von Leichtmetallwerkstoffen ZWF 100, No. 9, pp 481–489
Geiger M, Cleleghini M, Novotny S (2005) Advanced process strategies for the hydroforming of complex structures. Tagungsbeitrag, Polen
Novotny S, Geiger M (2003) Process design for hydroforming of lightweight metal sheets at elevated temperatures. J Mater Process Technol 138:594–599. doi:10.1016/S0924-0136(03)00042-6
Dykstra B (2001) Hot metal gas forming for manufacturing vehicle structural components. MetalForming/September, pp 50–52
Amborn et al (2006) HEATforming als Weiterentwicklung der IHU an der Schwelle zur Massivumformung. In: Proceedings 9th Umformtechnisches Kolloquium Darmstadt, 16–17 Feb 2006
Heislitz F (2001) Optimierung des Axial-Radial-Umformens—eine Verfahrenserweiterung des Rundknetens. Shaker-Verlag, Aachen
Bortot P, Ceretti E, Giardini C (2008) The determination of flow stress of tubular material for hydroforming applications. J Mater Process Technol 203:381–388. doi:10.1016/j.jmatprotec.2007.10.047
Dörr J (2006) Halbwarm-Innenhochdruck-Umformung von Leichtmetallrohren. Shaker Verlag, Aachen
von Breitenbach G (2007) Methode zur Analyse, Bewertung und Optimierung der Prozesskette Profilieren längsnahtgeschweißter Rohre für das Innenhochdruck-Umformen. Shaker Verlag, Aachen
Hielscher C (2001) Entwicklung eines Halbzeugprüfverfahrens für das Innenhochdruck-Umformen von Hohlprofilen. Shaker-Verlag, Aachen
Acknowledgments
The authors express their thanks to the DFG (Deutsche Forschungsgemeinschaft) for the support of the project “Untersuchung des Werkstoffverhaltens bei der Warm-Innenhochdruck-Umformung (GR 1818/34-1). The achievements described in this paper mainly result from this project.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Elsenheimer, D., Groche, P. Determination of material properties for hot hydroforming. Prod. Eng. Res. Devel. 3, 165–174 (2009). https://doi.org/10.1007/s11740-009-0156-2
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s11740-009-0156-2