clouds

   Introduction of steel rails Steel rail   is the main component of railroad track. Its function is to guide the wheels of rolling stock forward, to withstand the tremendous pressure of the wheels, and to transfer it to the rail sleepers. The rail must provide a continuous, smooth and minimal resistance rolling surface for the wheels. In the electrified railway or automatic blocking section, steel rail can also be used for track circuit. The stress conditions of  steel rails   are complex, in the process of use, the rail end part of the periodic impact load. Under the action of the train wheel, the rail tread has contact stress, rolling friction in locomotive operation and sliding friction when braking. The damage to the rail is mainly in the form of fracture, tread wear, etc. In order to be able to adapt to the railroad transport high speed, heavy load needs, as well as in order to ensure the train high speed in the operation of the smoothness, comfort, safety...