Rail steel is a professional steel used to manufacture tracks for locomotives, cranes, etc. According to Chinese national standards and the standards of the Ministry of Metallurgical Industry, rails are divided into railway rails, light rails, conductive rails and crane rails. my country's railways have developed a situation where high density, large axle loads and high speeds are simultaneously promoted. The simultaneous increase in speed and axle load undoubtedly places higher requirements on the performance of rails. The quality issues of rail steel have attracted more and more widespread attention.