Investigations on tailored forming of aisi 52100 as rolling bearing raceway
Autor: | Anna Chugreeva, Christoph Büdenbender, Berend Denkena, Laura Budde, Florian Pape, Bernd-Arno Behrens, Felix Saure, Florian Nürnberger, Ludger Overmeyer, T. Matthias, Hans Jürgen Maier, Jörg Hermsdorf, Mohamad Yusuf Faqiri, Christoph Kahra, Maximilian Mildebrath, Gerhard Poll, Thomas Hassel, Vannila Prasanthan, Bernd Breidenstein, Timm Coors |
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Jazyk: | angličtina |
Rok vydání: | 2020 |
Předmět: |
lcsh:TN1-997
Cladding (metalworking) 0209 industrial biotechnology Materials science Residual stress 02 engineering and technology Welding Bearing fatigue life law.invention 020901 industrial engineering & automation Plasma transferred arc welding 0203 mechanical engineering law Tailored forming General Materials Science Raceway ddc:530 Composite material lcsh:Mining engineering. Metallurgy Bearing (mechanical) Metals and Alloys Grinding AISI 52100 Hybrid bearing 020303 mechanical engineering & transports Thrust bearing Arc welding Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik Scanning acoustic microscopy |
Zdroj: | Metals 10 (2020), Nr. 10 Metals Volume 10 Issue 10 Metals, Vol 10, Iss 1363, p 1363 (2020) |
Popis: | 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 µ m 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. |
Databáze: | OpenAIRE |
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