MODE OF TESTING RAILWAY RAILS ON CONTACT WEARINESS Russian patent published in 2005 - IPC

FIELD: the invention refers to the field of quality control of materials and manufacture goods for assessment of resistibility of rails to destruction due to contact weariness.

SUBSTANCE: contact weariness is induced by high-frequency dynamic components of interaction of wheels and rails, which become apparent at moving at high speed. The mode of testing railway rails on contact weariness is in that tested samples of rail steel are rolled by pinch rolls in longitudinal direction until appearance on the surface of the sample of dents and also deep indents. As samples test rails are used. The diameter of a pinch roll is chosen under condition of equality of reduction ratio of linear size of the site of contact of the pinch roll with the rail along the axis of the last in comparison with corresponding size responsible to conditions of exploitation and speed reduction ratio of rolling motion of the pinch roll along exploited rail.

EFFECT: the invention allows to increase reliability of test rails' control at danger of resulting defects from contact weariness caused by contribution of high frequency components in dynamic interaction of wheels and rails which becomes apparent at the moving of trains at high speed.

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