High speed rail runs so many trains a day, what about rail wear?
The track is regularly checked and repaired. These are upstairs, in addition, the EMU because the car is light, but also the whole car power, the rail wear is not large, there is no heavy haul trains. What's more, its curves and downhill slopes have been computed without any large downhill or small radius curves. Secondly, high-speed rail or rail lines or, in addition to rail bottom slope on rail surface will advance and regular grinding, in order to form a point of view, the train is running, but can improve the wheel through smoothly.
Also, in the upper rail, the layer and is contacted with a wheel, is adding another metal, indium, it added to the rail on the part of the hardness of the case, even has some toughness, the train wheel is very important, it and the "tire" contact, the collision, there will be some flexibility, to ensure the safe operation of the train.
The rail is made of high manganese steel.Manganese iron is very eccentric and interesting: if 2-3% manganese is added into the steel, the resulting low manganese steel is as brittle as glass and cracked at one stroke. However, if manganese is added to >13% to make high manganese steel, it becomes hard and tough.
