CRITERIA AND METHODS OF EVALUATING THE MECHANICAL CONDITION OF THE RAIL STEEL AND THEIR EXPERIMENTAL VERIFICATION
DOI:
https://doi.org/10.15802/stp2007/17581Keywords:
mechanical condition, rail steel, experimentAbstract
The criterion of mechanical condition of steel, basing on interconnection of a limit of contact fatigue, a limit of mechanical fatigue, a ultimate strength and a hardness. The technique of an estimation of a mechanical condition of a rail steel is developed. Experimental researches of non-thermostrengthened rails after maintenance in conditions of the subway are executed. Character of distribution of hardness on a surface of rolling of the head of a rail is investigated, characteristic zones of its straining are fixed. Microstructural explorations of a material of rails in a superficial zone of contact to a wheel are executed. During the experiments validation of the developed criterion are received.
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