Will seamless rail expand and shrink?
In Qin Shen guest is also equipped with telescopic regulator, but also can prevent expansion and contraction caused by distortion of the track, but the train through the telescopic regulator will still produce vibration, affecting comfort.Sometimes the temperature range is too large may also be in the winter and summer transition to release stress release fastener.
Yes, that's the law of matter. When heated, the distance between molecules increases, the rail will stretch, and the same cold will shrink.Seamless rail is actually 25 meters rail welded into 1000 meters long rail, paved with local temperature.
Seamless rail fastening requirements are higher, the rail must be fixed, in the thermal expansion and contraction of the stress will not twist or break, which rail material also has a high demand.
