Hydroforging of Thick-Walled Hollow Aluminum Profiles

Karsten Müller; Malte Stonis; Michael Lücke; Bernd Arno Behrens

doi:10.4028/www.scientific.net/KEM.504-506.181

Paper Titles

Computer Aided Design of Manufacturing of Fasteners - Selection of the Best Production Chain
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Microstructural Behaviour in Rotary Forging of Inconel 718
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Compound Forging of Hybrid Powder-Solid-Parts Made of Steel and Aluminum
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Hydroforging of Thick-Walled Hollow Aluminum Profiles
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Evolution of Microstructure during the Shape Rolling Modeled by Cellular Automata
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Coupled Thermo-Mechanical Analysis of Process-Integrated Powder Coating by Means of Hot Rolling
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HomeKey Engineering MaterialsKey Engineering Materials Vols. 504-506Hydroforging of Thick-Walled Hollow Aluminum...

Hydroforging of Thick-Walled Hollow Aluminum Profiles

Abstract:

Lightweight design of cars is one way to reduce fuel consumption and increase the range of cars. This is an important factor to attain the EU limit values for CO2 emissions for vehicles and so to escape penalties for exceeding these limits as of the year 2012. The increasing uses of high-strength steels or of lightweight structures are adequate means to reducing weight. At IPH – Institut für Integrierte Produktion Hannover gGmbH a method to produce hollow profiles made of aluminum was developed. The method combines flashless forging and tube hydroforming. This is called hydroforging. With this method it is possible to produce thick-walled hollow aluminum profiles with undercuts without complex tool kinematics. The forging is supported by an active medium. A tool concept has been developed that uses the drives of a hydraulic press with die cushion. With this tool various component geometries were produced and analysed. To produce the tools interior pressure and the forming pressure liquid tin as incompressible active medium was used. The forming is initiated by an upsetting of the aluminum profiles and supported by the active medium, so that the profile is pushed against the engraving of the dies. The process was designed based on simulations and verified by practical experiments. This paper describes the development of the forging process with active medium and the discussion of the forging experiment results.

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Periodical:

Key Engineering Materials (Volumes 504-506)

Pages:

181-186

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.504-506.181

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Online since:

February 2012

Authors:

Karsten Müller, Malte Stonis, Michael Lücke, Bernd Arno Behrens

Keywords:

Aluminum (Al), Forging, Hydroforging, Hydroforming, Profile, Tube

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References

[1] M. Stonis, Mehrdirektionales Schmieden von flachen Aluminiumlangteilen, Berichte aus dem IPH, PZH Verlag, Bd. IPH 01/2011.

Google Scholar

[2] H.-W. Raedt, Leichtbau durch Massivumformung, Paper of Infostelle Industrieverband Massivumformung e. V., Hagen, 2004.

Google Scholar

[3] B.-A. Behrens, R. Nickel, S, Müller, Flashless precision forging of a two-cylinder crankshaft. In: Production Engineering, Springer Verlag Berlin, vol. 3, no. 4 (2009), pp.381-389.

DOI: 10.1007/s11740-009-0185-x

Google Scholar

[4] R. Balendra, Net-shape Forming, State of the Art, Journal of Materials Processing Technology, 115, Issue 2, 2001, 172-179.

DOI: 10.1016/s0924-0136(01)00812-3

Google Scholar

[5] D. Hunter, Using Hydroforming Aluminum Components versus Steel Stampings, The Tube & Pipe Journal, Rockford, 2001.

Google Scholar

[6] R. Marando, Understanding Tubular Hydroforming - Process Variables, MetalForming Magazine, 1998.

Google Scholar

[7] F. Vollertsen, State of the Art and Perspectives of Hydroforming of Tubes and Sheets, Article at www.hydroforming.net, 2001.

Google Scholar

[8] Grundlagen zum Innenhochdruckumformen von Rohren – Übersicht, http://hydroforming.mb.uni-magdeburg.de, 2004.

Google Scholar

[9] J. Lundqvist, Numerical Simulation of Tube Hydroforming – Adaptive Loading Paths, Licentiate Thesis, Lulea University of Technology, Sweden, 2004.

Google Scholar

[10] K. Lange, Umformtechnik - Handbuch für Industrie und Wissenschaft, Volume 4: Sonderverfahren

Google Scholar

[11] B. Langefeld, Energieeinsparungspotentiale in verschiedenen Lebensphasen des Automobils: Alternatives Recycling, Massivumformen von Hohlbauteilen durch Wirkmedien, Ph.D.-Thesis, RWTH Aachen. Volume 82, Shaker Verlag, Aachen, 1999.

Google Scholar