Table of Contents
Journal of Polymers
Volume 2016, Article ID 4734913, 10 pages
http://dx.doi.org/10.1155/2016/4734913
Research Article

Joining of Metal-Plastics-Hybrid Structures Using Laser Radiation by Considering the Surface Structure of the Metal

1Institute of Plastics Processing (IKV) at RWTH Aachen University, Seffenter Weg 201, 52070 Aachen, Germany
2Leister Technologies AG, Galileo-Strasse 10, 6056 Kaegiswil, Switzerland

Received 19 July 2016; Accepted 18 September 2016

Academic Editor: Zhong-Ming Li

Copyright © 2016 Christian Hopmann et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Lightweight construction is a central technology in today’s industrial production. One way to achieve the climate goals is the production of hybrid compounds of metal and plastic. The manufacturing process for these hybrid parts can be divided into in-mold assembly and postmold assembly. The postmold assembly includes thermal joining by laser, which is applied in the context of this paper. For the investigations, four plastics (MABS, PA6.6-GF35, PP, and PC), which differ in their properties, and three metals (unalloyed steel, stainless steel, and aluminum) are combined and analyzed. These materials have been used, since they have a huge significance in the automotive industry. Preliminary studies showed that an adhesive bond between the two materials is achieved using metal with a structured surface. According to these studies, three structuring processes for metals (selective laser melting (SLM), NRX, and a welded metallic tissue) are tested. The quality of the material/structure combinations is tested in tensile-shear-tests, microscopy images, and alternating climate tests. Compounds with SLM-Structure achieve highest strength, while compounds with aluminum are much more complex to manufacture.