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Insights into factors of damage of surface rolling of railway wheels during operation

Aaskerov Hangardas, Vakulenko Igor, Grischenko Nikolaji

Zeszyty Naukowe. Transport / Politechnika Śląska

2019

z. 105

27--33

The systematization results of microstructure studies of carbon steel has made it possible to explain the mechanism of formation of certain damages to the rolling surface of railway wheels during operation. The evaluation ability of metal to strain hardening was used to explain the nature of the influence compactly located non-deformable dispersed particles on the strength properties steel during cold plastic deformation. In the process of the interaction of a railway wheel with a rail, successively occurring heterogeneities in the distribution of the plastic flow metal are one of the main reasons for the formation of defects on the rolling surface of the wheel.

Symulacja warunków eksploatacyjnych powodujących uszkodzenia powierzchni tocznych kół i szyn kolejowych

Bogacz R., Świderski Z.

Symulacja w Badaniach i Rozwoju

2010

Vol. 1, nr 2

119-129

In the paper the dynamical processes are presented which lead to damage of rolling surfaces of rails and railway wheels. Due to dynamic interaction of rail vehicles with track on the rolling surfaces appear permanent deformations and structural changes inducing generation of surface deformations and fatigue cracks. As the main reason of cracking one approve thermal strokes during braking changing residual stresses in wheel rims and compressible stress in rails. But the principle influence have dynamical phenomena.