Insights Into Factors of Damage of Surface Rolling of Railway Wheels During Operation

Abstract

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.

Increasing the Traffic Safety Level of Rolling Stock by Wheel Condition Monitoring Using an Automated Measuring Complex

“…This specially applies to wheels. The parameters of wheel pairs, controlled in operation, are the distance between the inner edges of the railway wheel flanges, rolling surfaces, thickness and vertical undercut of the wheel flanges [13][14]. To ensure the high reliability, measurements of these parameters are carried out at four points on the circumference of each wheel [15][16][17].…”

Influence of hot plastic deformation on properties of the carbon steel

“…Thus, with an increase in the degree of hot plastic defor mation, grinding of the austenite grain (Fig. 3, b) should con tribute to a decrease in the probability of the austenite grain splitting into separate fragments with boundaries that have re duced mobility [8,20]. The analysis of changes of properties of strength, plastic characteristics, and strain hardening coeffi , a-c) indicates existence of a certain correlation rela tionship with both λ and d A .…”