60N railway rail

60N railway rail is used for Chinese 350 km/h state expree railway line, the head width was reduced 2.2mm, the outline is more near train wheel, so as to reduce the running wear.

The normal materials as below:

60N railway rail in China’s high-speed railways is developed based on the characteristics and requirements of the wheel rail contact relationship in Chinese railways. Here is some information about the use of 60N steel rails in China’s high-speed rail:
1. Research and experimental research: On the basis of drawing on foreign experience, the Chinese railway department has carried out optimization work on the rail head profile and successfully developed 60N railway rail with a new rail head profile. This work aims to improve the wheel rail contact performance, enhance the smoothness and safety of train operation.
2. Mixed use of tracks: Although there are differences in width and tread shape between 60N railway rail and traditional 60 steel rail (60N steel rails have conical tread and narrow light bands, which can reduce or even avoid fat edges at the edge of the rail), on China’s national railway lines, 60 and 60N steel rails are allowed to be mixed, which may require consideration of the laying and maintenance of transition sections to ensure the overall performance and safety of the track system.
3. Performance and quality requirements: In order to meet the high-performance and high-quality requirements of high-speed railways such as Chaoling High Speed Railway for steel rails, domestic steel manufacturers such as He Steel and Han Steel have carried out product development and certification work. The 60N specification U71MnG 100 meter high-speed rail they produced has been supplied to the high-speed railway project, indicating that 60N railway rail has the necessary performance and quality standards in high-speed railway applications.
4. Difference: Although there are differences in the models between 60N steel rails and 60 steel rails, mainly reflected in the profile of the rail head and possible density differences, they are usually calculated based on the weight per meter in China, and both are applicable to the standard gauge of 1435 millimeters in China.
In summary, 60N railway rail is an important infrastructure component in China’s high-speed railway system, and their research and use reflect the progress of China’s railway technology and the continuous pursuit of improving railway operation efficiency and safety.