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The rail track of a train refers to the railway line on the railway for trains to travel. The rail track of a train is called a railway track. It is usually referred to as a railway track, railway rail, steel rail, etc.

These rail tracks are usually composed of two parallel rails, and a long rail forms a continuous line. They maintain a fixed distance between them. The distance between the two rails is usually 1435 mm. This distance is designed according to the wheelbase and bogie spacing of the train to ensure that the train can travel stably.

The cross-section of each rail of the railway track is I-shaped, with the lower part being the load-bearing part and the upper part being the running part. The load-bearing part is usually designed with a wide cross-section, and the cross-section of the running part is relatively narrow. The upper part of the track needs to be polished to ensure that it can withstand the weight and impact generated by the train when it is running.

Railway tracks must have sufficient fatigue resistance, so the tracks are usually made of high-strength steel. These special steels are manufactured through special processes and have high tensile strength and fatigue life to ensure that the cyclic load of the rail train when it passes repeatedly can withstand the weight, friction and fatigue resistance of high-speed trains.

In addition, the rail track also includes some other components, such as turnouts, sleepers, connecting parts, anti-climbing devices and roadbeds. Turnouts are devices used to change the direction of train travel, sleepers are devices used to support rails, connecting parts are devices used to connect rails and sleepers, anti-climbing devices are devices used to prevent trains from derailing when climbing or descending, and roadbeds are the basis for fixing sleepers and bearing loads.

In short, the rail track of a train is a special steel product with high strength, fatigue resistance and friction resistance. They are one of the key factors to ensure that trains can run safely, quickly and efficiently.