Key points of rail production process

Steel Rail Grades and Size Overview

Rail engineers in the past designed the steel rail section as English Letter I, and I shape slightly changes when used in different applications. It has several structure parts, part of steel rail make contact with the wheels is called railhead. The supporting middle part of the steel rail is rail web, and some steel rails at the bottom is called rail flange. Specification of steel rails required by different requirement according to the working environment of steel rail.  So many steel rail standards has been developed to meet the requirements.

The types of railway track are expressed in kilometer per meter. The heavier the steel rail per meter, the greater weight the rail can bear.

As for the rail track sizes, there are some differences among countries. The common standards in Europe are 40kg/m, 50kg/m, and 60kg/m. And the common rails standards in China are 43kg, 50kg, 60kg, and 75kg. Generally, the most common rails standards are 43kg, 60kg/m and 75kg/m. Where can buy railroad rail? If you want to find the light railroad track manufacturers, you can choose the AGICO Rail.

Key points of Steel Rail Production Process

1. The use of off-furnace refining and vacuum degassing technology to ensure the intrinsic quality of the billet, control the residual elements and gases in the steel to ensure the purity of the steel rail.
2. Continuous casting of blooms, mainly to improve the low-fold structure of billets, which is the raw material of steel rail.
3. The stepping furnace is used to heat the steel slab, which can effectively control the atmosphere in the furnace and prevent the steel from decarburization and heating temperature unevenness during heating.
4. High-pressure water descaling technology. It is possible to greatly reduce the occurrence of defects such as rolling marks caused by the scale.
5. Adopting the universal hole design and computer to adjust the geometrical dimensions of the rails online to ensure the rolling precision of the steel rail.
6. Adopt long-length rolling, long-length cooling, reverse pre-bending and long-length straightening to increase the yield, reduce the pre-correction and reduce the residual stress after the correction, and improve the fatigue life of the rail.
7. Through the on-line quality inspection technology, the inner, surface quality and geometric dimensions of the rail can be fully understood by ultrasonic, eddy current and laser inspection of the rail.
8. High-precision machining accuracy can be achieved by cutting and drilling the rails with a sawing machine with a hard alloy.