What are the requirements for molten steel when recasting rails?

Edit:Zongxiang Heavy Industry--Lucas Date:2020-06-08 10:05:11

Since heavy rails need to bear the operation of heavy vehicles, they must be replaced once the rails are damaged. In fact, we can recast some rails at this time. What are the requirements for molten steel when recasting the rails?

The material of heavy rail belongs to high-carbon steel with high purity. The purity requirements of heavy rail steel continuous casting slab include gas content, inclusion control and residual element content control.  In order to ensure

 the service performance of the rail, the standards of the rail have strictly stipulated the chemical composition, gas content and residual elements. railway track material

Improving the purity of heavy rail steel can increase the wear resistance and contact fatigue resistance of heavy rail.  Heavy rail steel has strict requirements on the purity of steel, and various rail manufacturing standards also have clear regulations.  Controlling the purity of heavy rail steel is an important task in steelmaking, refining and continuous casting processes.  Controlling the content of phosphorus and sulfur in steel can improve the strength and toughness of rail.  Reducing the oxygen content in steel can significantly improve the fatigue life of rail. railway track material

Excessive hydrogen content can easily lead to white spot defects and stress concentration, which is the main factor of rail fatigue fracture.  Non-metallic inclusions in steel, especially aluminum oxide non-deformation inclusions, seriously destroy the continuity of steel matrix and are the main factors that cause rail cracks. railway track material

ZXsteelgroup specializes in the sales of steel rails, mining supporting materials, steel plate sales and steel plate cutting, and strictly controls the quality. After the products are put on the market, they are well received by customers. If you have any need, please feel free to ask for advice or leave us a message on the website. We believe that with your advice and help, we will do better.

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