Features of the tested bearing steel

Gulina I.V., Sedov O.V., Yakovlev N.O., Grinevich A.V.
UDC
620.1:669.14
DOI
10.18577/2307-6046-2019-0-10-76-83
Article PDF (Russian) (777.1 KB)
How to cite
Gulina I.V., Sedov O.V., Yakovlev N.O., Grinevich A.V. Features of the tested bearing steel // Proceedings of VIAM. 2019. No. 10. DOI: 10.18577/2307-6046-2019-0-10-76-83. URL: https://test.viam.ru/en/journal/2019/10/7
Keywords
bearing steel, tensile strength, wave failure, spallation, separation, stress concentrator, brittleness.
Abstract

The work deals with the problem of assessing the strength characteristics of bearing steel to determine its performance in the bearing elements. Since most of the performance characteristics of the material in the bearing correlate with the ultimate strength of the material, tensile tests were taken as basic. However, the standard samples was not acceptable to assess the strength of the bearing steel. Specimen failures occurred in the fillets, which are stress concentrators. Completion of the manufactured samples with the formation of the corset working part allowed to determine the ultimate strength of the bearing steel. When testing for quasi-static tension of bearing steel, a two-stage character of the sample failure is established, when a static fracture forms a tensile wave leading to a breakaway.

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