The tribology of conventional wheel on rail system is a very important fundamental research subject, which is very specific to railway. It also has great influence on the running stability of vehicle and the maintenance cost. Since such an interesting phenomenon has various influential factors, it hasn't been clarified enough even after studies more than a half century. This paper describes the structure of Twin-Disc Rolling Contact Testing Machine which was constructed to study the tribological phenomena between wheel and rail synthetically, and some experimental results of adhesion under some water lubricated conditions. It has been verified by the experiments that the decrease in water temperature lowers the adhesion between rail and wheel, which can be predicted by a theoretical approach with the mix lubrication theory.

Copyright (c) 2001 Railway Technical Research Institute