Abstract
Causes of reasons and explanation of mechanism forming damages of railway wheels tread were investigated. At slipping on contact surfaces wheelrail a between by simultaneous development of processes of work-hardening and softening metal determines the terms of origin damages of railway wheels tread were fixed.
Highlights
During operation of railway wheels different level of strength, the forming damages of metal railway wheels tread are conditioned the simultaneous action forces of friction and cyclic change of stresses [1]
Supposing that forming damages of surface tread is mainly determined the internal structure in volumes of metall near the tread of realway wheel [2], it is
Taking into account the tendency of produce railway wheels with the high level strength as a result of microalloying, change of content carbon in steel and use hardened heat treatments, the internal structure of metal near by the surface of railway wheels tread in majority of cases corresponds quenching and follow tempering in the middle interval of temperatures
Summary
During operation of railway wheels different level of strength, the forming damages of metal railway wheels tread are conditioned the simultaneous action forces of friction and cyclic change of stresses [1]. Taking into account the tendency of produce railway wheels with the high level strength as a result of microalloying, change of content carbon in steel and use hardened heat treatments, the internal structure of metal near by the surface of railway wheels tread in majority of cases corresponds quenching and follow tempering in the middle interval of temperatures. It ensues from experience of exploitation of railway wheels, that at the identical level of strength and high-quality different structural state of metal, the processes of wear can substantially differ [2]
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