Scrap standard for steel rails

The scrap standards for steel rails include the following aspects:

1. Service life: The service life of steel rails should be determined based on the material, working conditions, and wear of the rails, but the maximum service life should not exceed 30 years. Under normal conditions, with no more than 1000 trains per kilometer, the maximum service life of steel rails is about 25 years.

2. Crack length: When the length of the crack on the surface of the rail exceeds 15mm, the rail needs to be replaced immediately.

3. Corrosion depth: If the corrosion depth of the rail exceeds 2mm, a new rail needs to be replaced.

4. Crown height: Crown height refers to the height of the rail head, usually 30mm. Exceeding the standard rail head can cause instability in locomotives and carriages, and may even lead to accidents such as vehicle overturning.

5. Dynamic gauge: Exceeding the standard gauge will cause the vehicle to deviate, affecting driving safety.

6. Rail surface condition: The rail surface of the steel rail should be flat and smooth, without obvious defects such as cracks or peeling, otherwise it may cause accidents.

In addition to the above standards, the scrap criteria for steel rails may also include other factors such as rail bottom wear, material issues, etc. In practical situations, it is necessary to evaluate and make judgments based on specific circumstances.

In order to ensure driving safety and transportation efficiency, it is necessary to regularly inspect the condition of the steel rails and promptly handle any abnormal situations once discovered. At the same time, it is necessary to strengthen the maintenance of the rail surface, adopt anti slip measures, regularly inspect the condition of the rails, etc., in order to extend the service life of the rails and ensure driving safety.