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Department of Mechanical Engineering

Longitudinal Mechanical Joining of Extruded Aluminum Profiles with Increased Tightness Requirements

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  • Massivumformung
  • Technologieentwicklung
  • Industrienahe Forschung
Longitudinal joining: equivalent plastic strain, contour comparison, and microstructure image © IUL
Longitudinal joining: equivalent plastic strain, contour comparison, and microstructure image
Funding AiF/Stifterverband Metalle
Project 21048 N
Contact Florian Kneuper M. Sc.

In cooperation with the Laboratory for material and joining technology (LWF) at Paderborn University, this project investigates the development and implementation of a novel extrusion concept to produce profiles with increased sealing requirements for battery trays. By means of a simulation-based profile geometry development, three profile geometries are determined that show a good joint formation (including a large undercut) as well as high forces under typical load cases such as shear tensile and bending loads. In the joining process the profiles are joined by forming within one press stroke. Initial joining tests show only minor geometric deviations in the joint formation compared to the simulation (see figure). By varying the extrusion parameters and using a suitable (local) cooling strategy, the strength of the profiles is to be graded to improve the properties of the joint. The resulting tightness will then be investigated for the manufactured profile composite systems.