Rail Construction:

The construction of railway tracks involves various complex stages that must be carried out by experienced supervising engineers. In order to produce railway tracks in accordance with the EN 13674-1 standard, the following criteria must be considered:
Nitrogen Content in Melting:
The maximum nitrogen content in railway tracks should not exceed 90 ppm, unlike in other steel bars where it is typically considered to be less than 120 ppm.
Hydrogen Content in Melting:
The hydrogen content in rails should be less than 5.2 ppm. This parameter is crucial, and therefore, its quantity is measured again during the final stage of casting.
Oxygen Content in Melting:
The maximum oxygen content permitted for rail production according to this standard is 20 ppm.
Sulfur Print Test:
This test is conducted to measure the dispersion and distribution of sulfur compounds, which are then compared with specific standards.
Hardness Testing:
The hardness and strength of railway tracks are essential, so chemical analysis must be conducted after production to determine this parameter.
Decarburization Depth:
This parameter must also be controlled after construction, as it is a criterion for steel rail hardness.
Oxidative Impurities:
The level of oxidative impurities in the produced rails is crucial and must precisely adhere to standards. The acceptable standard for oxidative impurities is as follows:
K3 < 10 for at least 95% of samples
K3 < 20 for a maximum of 5% of samples