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Light steel Rail  is the main component of the railway track, it must ensure the continuity of the railway track and the quality of the rail itself. In order to ensure the normal operation of the railway and the person of the passenger, the waste steel rail must be replaced in time. Light steel Rail The formation of  Heavy Steel Rail  contact fatigue damage can be roughly divided into three stages: the first stage is the change in the shape of the rail tread, such as irregularities in the rail tread, and saddle wear at the welds. These irregularities will increase the wheel to the rail The second stage is the destruction of the metal on the surface of the rail head. Due to the cold hardening of the metal on the rail head tread surface, the hardness of the working surface of the rail head continues to increase. Welding Q345B angle steel with strong adaptability to the base metal composition and low C, S, P content is used. The formed weld metal C, S has a lower content,

Angle steel is often used for the establishment of metal members, connectors and foundation frame structures, and has good plastic deformation properties. The range of use is also very wide. Many people want to know how to distinguish the quality of angle steel when buying it.  Angle Bar Supplier  will briefly introduce it to everyone. Angle steel is mainly divided into two types: equilateral angle steel and unequal angle steel. Among them, unequal angle steel can be divided into two types: unequal width and unequal thickness. The specifications of the angle steel are indicated by the side length and side dimensions. At present, the specifications of domestic angle steel are 2-20, and the number of centimeters on the side is the number. The same angle steel usually has 2-7 different side thicknesses. The imported angle steel indicates the actual size and thickness of both sides, and indicates the relevant standards. Generally, a large angle steel having a side length of 12.5 cm or

The role of  Heavy Rail  is to directly bear the weight of the train and its load transmitted by the wheels, and guide the train's running direction. Such a huge pressure first falls on the shoulders of the rail. It can be seen that the rail must have sufficient strength, stability and wear resistance. The I-shaped cross section of the rail is composed of the rail head, rail waist, and rail bottom. This seemingly simple I-beam has good strength, saves material, and has the best bending resistance. The type and strength of the rail are expressed in kg / m. The heavier the mass per meter of rail, the greater the load it will bear. In order to improve the capacity of the line, heavy rails are usually laid on the main lines. Theoretically, the longer the length of the rail, the better, which not only reduces the impact and wear of the joint, but also reduces the labor intensity of laying. However, due to production and transportation constraints, China's current standard rail