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Macro- and Microstructural Analysis of Structural Bearing Steel SHKh15SG in the Context of Predictive Diagnostics
https://doi.org/10.17586/0021-3454-2025-68-6-526-535
Abstract
A macro- and microstructural analysis of the axle box bearings of freight wagons has been carried out. An increase in the hardness of the material of the rollers that have been in use in relation to the hardness of the new roller has been established. It is found that in light and dark areas, there is a softening of the rollers and a significant decrease in the standard hard-ness of hardened bearing steel SHKh15SG. This leads to the creation of zones of residual stresses at the interfaces of the original martensitic and transformed troostomartensitic structures, which can ultimately cause the appearance of microcracks in the rollers and, as a consequence, cause a decrease in the service life of the axle box bearings of freight cars in operation.
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About the Authors
E. V. Kondratenko
Omsk State Transport University
Russian Federation
Russian Federation
Evgeniy V. Kondratenko - PhD, Associate Professor; Institute of Educational Communications and Distance Technologies, Director of the Institute,
Omsk.
Yu. M. Sosnovsky
Omsk State Transport University
Russian Federation
Russian Federation
Yury M. Sosnovsky - PhD, Associate Professor; Department of Physics and Chemistry, Head of the Department,
Omsk.
D. V. Muravyov
Omsk State Transport University
Russian Federation
Russian Federation
Dmitry V. Muravyov — PhD, Associate Professor; Department of Technologies of Transport Engineering and Repair of Rolling Stock,
Omsk.
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Review
For citations:
Kondratenko E.V., Sosnovsky Yu.M., Muravyov D.V. Macro- and Microstructural Analysis of Structural Bearing Steel SHKh15SG in the Context of Predictive Diagnostics. Journal of Instrument Engineering. 2025;68(6):526-535. (In Russ.) https://doi.org/10.17586/0021-3454-2025-68-6-526-535
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