What is the rail dispersion?
Rail dispersion is a construction process in the construction and maintenance of cwr. To put it simply, the internal stress of the rail in the design temperature range is zero. In order to ensure that the highest rail temperature will not occur when the runway rises, the minimum rail temperature, the rail will not be broken.
The concrete way is to make all the rail fasteners loose, and use the drum to pad the rail and hit the rail with a rail collision device. When the rail reaches the designed rail temperature, the fastener is quickly tightened and the line is locked. When the rail temperature is lower than the designed rail temperature, the rail pulling device can be used to draw the rail and tighten the fastener.
