Steel Railway 22KG Rail 55Q China

22kg rails, that is, rails weighing 22 kilograms per meter, are a common specification in railway track construction. This type of rail has good load-bearing capacity and stability and is widely used in railway trunk lines, branch lines and dedicated lines.

Parameter explanation:

(1) Rail height:

refers to the vertical distance from the top to the bottom of the rail. For 22kg rails, the rail height is usually around 107mm.

(2) Bottom width:

refers to the width of the bottom of the rail. The bottom width of a 22kg rail is generally 107mm.

(3) Head width:

refers to the width of the head part of the rail. The head width of a 22kg rail is approximately 60mm.

(4) Waist thickness:

refers to the thickness of the waist of the rail. For 22kg rails, the waist thickness is generally 10.5mm.

(5) Material:

Usually made of high-quality carbon structural steel or low-alloy high-strength structural steel, with good strength and toughness.

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1.What are heavy rails and light rails, and what is the difference between them? ​

Heavy rails and light rails are mainly distinguished by the weight of each meter of rails. Generally, rails with a weight of more than 30kg per meter are called heavy rails, which are often used in railway trunk lines, heavy-load railways, etc.; rails with a weight of less than or equal to 30kg per meter are called light rails, which are often used in lines with smaller traffic volumes such as urban light rails and mining railways.

2.What are the welding processes for rails? What are the characteristics of each? ​

Common rail welding processes include flash butt welding, gas pressure welding and aluminothermic welding.

3.What are the characteristics of rail welding processes?

Flash butt welding has fast welding speed and stable quality, and is suitable for batch welding of long rails in factories; gas pressure welding has good comprehensive performance of welding joints, but has high requirements for welding equipment and operation; aluminothermic welding equipment is simple and easy to operate, and is often used for railway line maintenance and short rail connection. ​

4.What effect does heat treatment of rails have on their performance? ​

Heat treatment can significantly improve the performance of rails. Through heat treatment processes such as quenching and tempering, the hardness, strength and wear resistance of the rails can be improved while maintaining a certain toughness.

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