Repair of roller bearing damage using tailored forming to extend service life (T05*)

• Subject Area: Primary Shaping and Reshaping Technology, Additive Manufacturing ; Engineering Design, Machine Elements, Product Development
• Term: since 2023
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 252662854

In the transfer project T05, a repair process chain for damaged rolling bearings will be developed according to the tailored forming approach. Therefore, deposition welding is used in order to repair the near-surface damage on the raceway of the bearings. Afterwards, the welded bearings are machined, heat-treated and finally the surface layer will be formed incrementally with a deep-rolling tool. The forming is used for the induction of residual compressive stresses and therefore to increase the service life, which is investigated on bearing test rigs after the final process step. The process chain is accompanied by material analyses in order to evaluate the process steps and demonstrators.

• DFG Programme: Collaborative Research Centres (Transfer Project)
• Subproject of: SFB 1153: Process Chain for Manufacturing of Hybrid High Performance Components by Tailored Forming
• Applicant Institution: Gottfried Wilhelm Leibniz Universität Hannover
• Business and Industry: ECOROLL AG; MCR Engineering Lausitz GmbH; OSCAR PLT GmbH; Dr. M. Schnick
• Project Heads: Dr.-Ing. Thomas Hassel; Dr.-Ing. Florian Pape; Professor Dr.-Ing. Gerhard Poll