Steel Rail Accessories Railway accessories are part of the railway line, which refers to the track, including rails, sleeper, connecting parts, track bed, anti-climb equipment, rail and turnout and so on. As a holistic engineering structure, the rail laying on the roadbed, plays a guiding role in the operation of the train, directly under the enormous pressure of locomotives and their loads. Under the power of the train operation, its various components must have sufficient strength and stability to ensure that the train in accordance with the provisions of the highest speed, safe, smooth and uninterrupted operation.

   Steel Rail Accessories Rails

Railway equipment is an important railway equipment, rail is the main symbol of railway equipment.

A-high B-bottom width C-head width D-thick

(1) classification. Rail to the approximate weight per meter kilogram, can be divided into two kinds of heavy and light rail:

Heavy rail. According to the steel used in steel are divided into: ordinary manganese rail, copper carbon steel rail, high silicon steel with copper, copper, manganese, silicon and so on. There are 38,43,50 kg three. There are also 60kg rails for a few lines that have been planned for 60kg rails on lines with high traffic and high speed. GB2585- 81 provides our 38 ~ 50kg / m rail technical conditions.

? light rail. There are 9,12,15,22,30 and other different types

 (2) manufacturing and use. The rails are made of carbonized steel from flat furnace and oxygen converter smelting. Its use is to withstand the operating pressure of the locomotive and the impact load.

(3) production and import countries. China's current rail, mainly some domestic steel production, such as Anshan Iron and Steel, Wuhan Iron and Steel and so on. In addition, due to the larger amount, still need to import some of our technical standards required by the physical and chemical properties and according to foreign standards and methods to determine the rail and rail accessories. Import production state-owned Japan, Germany, France, Britain, Russia, Australia and so on.

Steel Rail Accessories Size specification

Rail length and other geometric dimensions and tolerances, etc., by the "8" in the light rail corresponding to the provisions of the standard.

3. Appearance quality

(1) After rolling the rails should be straight, no significant bending and twisting. For the local bending and twisting of light and heavy rails and the amount of correction deformation, the inclination of the rail end, etc., shall not exceed the standard requirements.

(2) the rail surface should be clean and smooth, no cracks, scarring, scratches and other defects; its end face shall not have cracks and sandwich and so on. The level of defects and their geometrical quantities allowed for the entire surface of the light and heavy rail shall not exceed the requirements of the standard.