Investigations on Tailored Forming of AISI 52100 as Rolling Bearing Raceway
Timm Coors,
Maximilian Mildebrath,
Christoph Büdenbender,
Felix Saure,
Mohamad Yusuf Faqiri,
Christoph Kahra,
Vannila Prasanthan,
Anna Chugreeva,
Tim Matthias,
Laura Budde,
Florian Pape,
Florian Nürnberger,
Thomas Hassel,
Jörg Hermsdorf,
Ludger Overmeyer,
Bernd Breidenstein,
Berend Denkena,
Bernd-Arno Behrens,
Hans Jürgen Maier,
Gerhard Poll
Affiliations
Timm Coors
Institut für Maschinenkonstruktion und Tribologie (Machine Design and Tribology), Leibniz University Hannover, An der Universität 1, 30823 Garbsen, Germany
Maximilian Mildebrath
Institut für Werkstoffkunde (Materials Science), Leibniz University Hannover, An der Universität 2, 30823 Garbsen, Germany
Christoph Büdenbender
Institut für Umformtechnik und Umformmaschinen (Forming Technology and Machines), Leibniz University Hannover, An der Universität 2, 30823 Garbsen, Germany
Felix Saure
Institut für Maschinenkonstruktion und Tribologie (Machine Design and Tribology), Leibniz University Hannover, An der Universität 1, 30823 Garbsen, Germany
Mohamad Yusuf Faqiri
Institut für Werkstoffkunde (Materials Science), Leibniz University Hannover, An der Universität 2, 30823 Garbsen, Germany
Christoph Kahra
Institut für Werkstoffkunde (Materials Science), Leibniz University Hannover, An der Universität 2, 30823 Garbsen, Germany
Vannila Prasanthan
Institut für Fertigungstechnik und Werkzeugmaschinen (Production Engineering and Machine Tools), Leibniz University Hannover, An der Universität 2, 30823 Garbsen, Germany
Anna Chugreeva
Institut für Umformtechnik und Umformmaschinen (Forming Technology and Machines), Leibniz University Hannover, An der Universität 2, 30823 Garbsen, Germany
Tim Matthias
Institut für Umformtechnik und Umformmaschinen (Forming Technology and Machines), Leibniz University Hannover, An der Universität 2, 30823 Garbsen, Germany
Laura Budde
Laser Zentrum Hannover e.V., Hollerithallee 8, 30419 Hannover, Germany
Florian Pape
Institut für Maschinenkonstruktion und Tribologie (Machine Design and Tribology), Leibniz University Hannover, An der Universität 1, 30823 Garbsen, Germany
Florian Nürnberger
Institut für Werkstoffkunde (Materials Science), Leibniz University Hannover, An der Universität 2, 30823 Garbsen, Germany
Thomas Hassel
Institut für Werkstoffkunde (Materials Science), Leibniz University Hannover, An der Universität 2, 30823 Garbsen, Germany
Jörg Hermsdorf
Laser Zentrum Hannover e.V., Hollerithallee 8, 30419 Hannover, Germany
Ludger Overmeyer
Laser Zentrum Hannover e.V., Hollerithallee 8, 30419 Hannover, Germany
Bernd Breidenstein
Institut für Fertigungstechnik und Werkzeugmaschinen (Production Engineering and Machine Tools), Leibniz University Hannover, An der Universität 2, 30823 Garbsen, Germany
Berend Denkena
Institut für Fertigungstechnik und Werkzeugmaschinen (Production Engineering and Machine Tools), Leibniz University Hannover, An der Universität 2, 30823 Garbsen, Germany
Bernd-Arno Behrens
Institut für Umformtechnik und Umformmaschinen (Forming Technology and Machines), Leibniz University Hannover, An der Universität 2, 30823 Garbsen, Germany
Hans Jürgen Maier
Institut für Werkstoffkunde (Materials Science), Leibniz University Hannover, An der Universität 2, 30823 Garbsen, Germany
Gerhard Poll
Institut für Maschinenkonstruktion und Tribologie (Machine Design and Tribology), Leibniz University Hannover, An der Universität 1, 30823 Garbsen, Germany
Hybrid cylindrical roller thrust bearing washers of type 81212 were manufactured by tailored forming. An AISI 1022M base material, featuring a sufficient strength for structural loads, was cladded with the bearing steel AISI 52100 by plasma transferred arc welding (PTA). Though AISI 52100 is generally regarded as non-weldable, it could be applied as a cladding material by adjusting PTA parameters. The cladded parts were investigated after each individual process step and subsequently tested under rolling contact load. Welding defects that could not be completely eliminated by the subsequent hot forming were characterized by means of scanning acoustic microscopy and micrographs. Below the surface, pores with a typical size of ten µm were found to a depth of about 0.45 mm. In the material transition zone and between individual weld seams, larger voids were observed. Grinding of the surface after heat treatment caused compressive residual stresses near the surface with a relatively small depth. Fatigue tests were carried out on an FE8 test rig. Eighty-two percent of the calculated rating life for conventional bearings was achieved. A high failure slope of the Weibull regression was determined. A relationship between the weld defects and the fatigue behavior is likely.
