50kg rail size parameters
More detailed information about 50kg/m rails is as follows:
Cross-sectional dimensions.
Rail head: The width of the rail head is 70mm, and the distance from the outermost side of the rail head to the other side is 70mm, providing the main contact and load-bearing surface for the wheel.
Rail waist: The thickness of the rail waist is 15.5mm, connecting the rail head and the rail bottom, mainly bearing the bending stress of the rail, ensuring the overall strength and stability of the rail.
Rail bottom: The width of the rail bottom is 132mm, and the rail bottom contacts the sleeper or the roadbed, transferring the load borne by the rail to the sleeper and the roadbed, while providing the lateral stability of the rail.
Rail height: The height of the rail is 152mm, and the vertical distance from the bottom of the rail bottom to the top of the rail head is 152mm. This size determines the vertical load-bearing capacity of the rail and the matching relationship with the wheel.
Length size.
Standard rail: The standard rail length is 12.5 meters and 25 meters, which is suitable for laying most straight lines and curved tracks with large radii.
Shortened rail: When used for the lower track of the curve, the 12.5-meter shortened rail has three types: 12.46 meters, 12.42 meters, and 12.38 meters; the 25-meter shortened rail has three types: 24.96 meters, 24.92 meters, and 24.84 meters, which can match the length of the inner and outer rails to meet the laying requirements of the curved track.
Other parameters.
Cross-sectional area: about 65.8 square centimeters, which is calculated by calculating the geometric shape of the rail cut surface and is closely related to the bearing capacity, stiffness and other properties of the rail.
Theoretical weight: 51.514kg/m, which is the weight of each meter of rail calculated based on factors such as the material density and cross-sectional size of the rail. There may be a certain allowable deviation in actual production.
Material: U71, U75 and other materials are usually used.
