With our increasing demand for railway transportation, different degree of locomotive wheel tread peeling has been appeard, caused by the interaction between wheel and rail. The locomotive wheel tread peeling seriously threatens the safe operation of a train. In order to study the influence of sand on the locomotive wheel tread peeling, quartz sand and different types of river sand which are using in locomotive maintenance service unit have been sampled and a wheel-rail contact simulation test-rig has been set up to carry out the rolling experiments of wheel-rail and quartz sand and river sand. Besides, metallographic analysis has been carried out on the stripping part. After the comprehensive comparative analysis of the scene, test results and metallographic analysis, the conclusions have been drawn. Owning to the action of river sand, the locomotive wheel tread emergences the phenomenon of pitting in the initial stage of application. The river sand makes the effect of rolling contact fatigue occur, and then together lead to the fish scale stripping on the locomotive wheel tread. Furthermore different types of river sand could cause varying degree of pit damage on the wheel surface. And the worse the crushing uniformity of the sand is, the more serious the wheel stripping damage is. Hence it is suggested to use the quartz sand with better crushing uniformity as media to improve adhesion.
ZHANG Jun
,
WANG Xueping
,
MA He
. Experimental Study on Influence of Sanding on Peeling of Wheel Tread of Locomotive[J]. Journal of Mechanical Engineering, 2018
, 54(8)
: 68
-73
.
DOI: 10.3901/JME.2018.08.068
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