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  Steel rails  are the main components of the track. The function of the rail is to guide the wheels of the locomotive vehicle forward, directly withstand various forces from the wheel and other aspects, and transmit it to the under-rail foundation and provide a continuous and smooth surface for the rolling of the wheel. Steel rail types Steel rail types are customarily expressed in kilograms (kg/m) of the mass per meter of rail. China's rail standard include 75kg/m, 60kg/m, 50kg/m, 43kg/m, 38kg/m, etc. in the international market, there are AREMA, BS, JIS, UIC, DIN and other standard rail. The type of rail should be adapted to the volume, allowable speed and axle weight. The selection of rail type should be considered based on the transport conditions. Technically, it is necessary to ensure sufficient strength, toughness, wear resistance and stability; economically, ensure a reasonable overhaul cycle and reduce the maintenance. The main factors for determining the mass (weigh...

  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 le...

  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. 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, a hig...

Steel Track Type The type of  Steel Track is expressed in kilograms per meter of Steel Track mass. There are several kinds of Steel Tracks used on Steel Trackways in my country, such as 75kg/m, 60kg/m, 50kg/m, 43kg/m and 38kg/m. The cross-sectional shape of the Steel Track adopts an I-shaped cross-section with the best bending resistance, which is composed of three parts: Steel Track head, Steel Track waist and Steel Track bottom. In order to make the Steel Track better withstand the forces from all aspects and ensure the necessary strength conditions, the Steel Track should have sufficient height, its head and bottom should have sufficient area and height, and the waist and bottom should not be too thin. Among the above various types of Steel Tracks, production of 38kg Steel Tracks has been stopped,  60kg Heavy Steel Rail and 50kg Heavy Steel Rail are laid on the main trunk lines, and 43kg Steel Tracks are generally laid on station lines and special lines. For h...

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 1...

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...

Heavy Rail  wavy wear refers to the wavy uneven wear on the top surface of the rail, which is essentially wavy crushing. Wave grinding will cause high wheel and rail power effects, accelerate the damage of locomotive vehicles and track components, and increase maintenance and repair costs. In addition, the severe vibration of the train will make passengers uncomfortable and will also threaten driving safety in severe cases. origin of. There have been serious waves in some of our country's freight routes. Its development speed is faster than side grinding, and it has become the main reason for changing rails. Heavy Rail Wave grinding can be divided into two types: short wave (or wave) and long wave (or wave). The ripple is a periodic irregularity with a wavelength of about 50-100mm and an amplitude of 0.1-0.4mm; the long wave is a periodic irregularity with a wavelength of more than 100mm and less than 3000mm and an amplitude of less than 2mm. Wave grinding mainly o...