Mechanical joining
Light construction potential with cold joining techniques.
Weight reduction is a central objective in the automotive industry. Composite construction, for example with steel, aluminium and plastic, has developed into a core issue as a result of the attempt to attain these goals. Joining technology, however, is a challenge in this field. Thermal welding processes frequently reach their limits here.Alternatives are sought.
Mechanical joining processes show great potential. INPRO has tested mechanical joining in vehicle construction over many years in its collaborative development work. Many innovative solutions were found to bond sheet metal materials, and several key patents were generated as a part of this work.
For example, it developed a combined process to bond sheets with one-sided access to profiles using blind rivets and flow hole forms. One solution for bonding high-strength panels was found to be heat-supported mechanical joining. Pre-coated materials could be processed successfully with the help of effective media supported clinching.
INPRO's work in the field of mechanical joining processes has provided an excellent basis for future innovations in lightweight vehicle construction. In order to meet the challenges of the future, in the light of the current CO2 discussion, cooperation with universities and research institutes was required for the further development of various approaches.