Abstract
This research is aimed at predicting the rail gauge and wheel flange contacts and their influences to wear rate using pin-on-disc method. A real model using a pin to represent a wheel component and a disc to represent a rail component were fabricated for the experiments. The experimental results were analyzed and the empirical formula of the wear depths as functions of applied load, bulk temperature and sliding velocity were obtained to describe the behavior of the systems. The results showed that the wear depth increased linearly with the increasing in applied load and temperature, while it decayed exponentially with the sliding velocity. The results were found to agree with the twin disc models from previous research works.
Highlights
Rail and wheel suffer damage on each contact surfaces such as wear, erosion and plastic deformation
The wear of rail gauge and wheel flange contact has been found to be more severe as compared to the rail head and wheel tread contact [2]
This paper aims to determine the wear rate using pin-on-disc method
Summary
Rail and wheel suffer damage on each contact surfaces such as wear, erosion and plastic deformation. The wheel load which consists of contact stress distribution, subsurface stress, and plastic deformation can lead to rolling contact fatigue. The lubrication system of rail and wheel contact surfaces to decrease the wear rate is currently available; wear is still a huge problem on rail and wheel contact due to abnormal operating conditions. The maintenance cost of wear and fatigue of wheel and rail contacts is estimated to be about 1.2 billion USD in China annually [1]. The wear of rail gauge and wheel flange contact has been found to be more severe as compared to the rail head and wheel tread contact [2]. The surface interaction of the rail gauge and wheel flange can be considered as sliding contact
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