Details
| Originalsprache | Englisch |
|---|---|
| Publikationsstatus | Veröffentlicht - 2019 |
| Veranstaltung | Nanobruecken 2019: A Nanomechanical Testing Conference - Technische Universität Berlin, Berlin, Deutschland Dauer: 19 Feb. 2019 → 21 Feb. 2019 |
Konferenz
| Konferenz | Nanobruecken 2019 |
|---|---|
| Land/Gebiet | Deutschland |
| Ort | Berlin |
| Zeitraum | 19 Feb. 2019 → 21 Feb. 2019 |
Abstract
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2019. Postersitzung präsentiert bei Nanobruecken 2019, Berlin, Berlin, Deutschland.
Publikation: Konferenzbeitrag › Poster › Forschung
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TY - CONF
T1 - Surface Properties of Tailored Forming Thrust Bearings
AU - Poll, Gerhard
AU - Behrens, Bernd-Arno
AU - Chugreev, Aleksandr
AU - Matthias, Tim
AU - Pape, Florian
AU - Coors, Timm
PY - 2019
Y1 - 2019
N2 - The surface properties of rolling bearings are fundamental to avoid wear and early failures. In our case, Tailored Forming cylindrical thrust roller bearings were investigated. Through laser cladding or plasma-transferred-arc welding, a lower grade base steel can be combined with a high strength steel acting as cladding for rolling contact loads. A subsequent forging process is applied to benefit from process- and material-specific advantages. Fatigue tests were conducted to assess the bearings. Prior and after the tests, the bearing surfaces were investigated by nano-indentation studies. Nano-scratch tests were performed to determine the frictional and mechanical surface properties. The measurements were carried out on a Bruker (formerly Hysitron) TI950 TriboIndenter by applying a spherical diamond cone tip with a radius of 300 nm. The travel length of the tip on the surface was 8 µm. Each test was performed in three steps: initially, the surface contour was scanned by the tip under very low load on one path (pre-scan). Next, the scratch was performed on the same route with a final force of 1 mN (scratch). Finally, the plastically deformed material was analysed in a post-scan. During the test, the coefficient of friction was evaluated. The measured surface properties were compared to thrust bearings made from conventional 100Cr6 bearing steel.
AB - The surface properties of rolling bearings are fundamental to avoid wear and early failures. In our case, Tailored Forming cylindrical thrust roller bearings were investigated. Through laser cladding or plasma-transferred-arc welding, a lower grade base steel can be combined with a high strength steel acting as cladding for rolling contact loads. A subsequent forging process is applied to benefit from process- and material-specific advantages. Fatigue tests were conducted to assess the bearings. Prior and after the tests, the bearing surfaces were investigated by nano-indentation studies. Nano-scratch tests were performed to determine the frictional and mechanical surface properties. The measurements were carried out on a Bruker (formerly Hysitron) TI950 TriboIndenter by applying a spherical diamond cone tip with a radius of 300 nm. The travel length of the tip on the surface was 8 µm. Each test was performed in three steps: initially, the surface contour was scanned by the tip under very low load on one path (pre-scan). Next, the scratch was performed on the same route with a final force of 1 mN (scratch). Finally, the plastically deformed material was analysed in a post-scan. During the test, the coefficient of friction was evaluated. The measured surface properties were compared to thrust bearings made from conventional 100Cr6 bearing steel.
M3 - Poster
T2 - Nanobruecken 2019
Y2 - 19 February 2019 through 21 February 2019
ER -