Characteristics and Improvement of Steel Rail
As the speeds of Railway Rail and axle loads continue to increase, this also requires Steel Rail to have greater stiffness and better wear resistance. Steel Rail In order to make the rails have sufficient twist, the rail height can be appropriately increased to ensure that the rail has a large horizontal moment of inertia. At the same time, in order to make the rails have sufficient stability, it should be as wide as possible when designing the width of the rail. In order to optimize the stiffness and stability, countries usually control the ratio of the rail height to the bottom width when designing the rail section, ie H/B. Among them, improving the rail head section design is one of the methods to improve the stiffness and wear resistance. In the early rail section of the rail, the tread surface is relatively flat, and the arcs with smaller radius are used on both sides. Until the 1950s and 1960s, it was found that regardless of the shape of the...