Abstract
The wear resistance research of the rail contact surface depending on the grinding process
Highlights
There is a constant increase in the speed of rail transport, the relative movements of friction surfaces as well as an increase in specific loads and the presence of abrasive
Rail grinding is a repair method that allows the removal of defective material layers from the rail surface as well as to provide the necessary accuracy of size and shape
Optimization of rail grinding parameters based on the results of the effect of rail surface hardness on its wear resistance;
Summary
Continuous mechanical loads on the rails during its contact with the wheel lead to an accumulation of residual stresses in the surface layers of the rails, resulting in fast-growing fatigue cracks. The interaction of the wheel and the rail leads to micro-and macro-slip during their contact, abrasive wear, as well as plastic deformation of the rail. Rail grinding is the repair method by which defective material layers removes from the rail surface, provides the necessary accuracy of size and shape as well as surface quality
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