Welding: parts for the rail industry, steel structures

The production of parts for the transport industry is enabled by way of comprehensive material processing. Our components for the rail industry and steel structures are created by processes such as grinding, laser cutting or welding. The latter deserves more attention, as it differs from our other services that are based on the removal of excess material. This method is used to bind the individual components together.

Welding – how are steel structures made?

When making structures for the rail industry, we use welding as the method of choice to join materials.
It entails the local melting of material fragments and subsequently joining them. This method Is usually used to mate metals, however, it may also be used in the joining of synthetic materials.
Various welding methods are used depending on the parts to be made, the material to be processed and its thickness, e. g.:

electric – performed at temperature of up to 4000 °C. This method is used to bind metal sheets that are 1÷80 mm thick;
gas – used to bind metal sheets that are 0.4÷40 mm thick, and takes place at temperatures of up to 3100 °C;
electrogas welding – this method allows the joining of materials that are between 12 and 100 mm thick;
electron beam welding – the joint spot of materials is heated by an electron beam in a vacuum environment;
laser – in case of this technique, the joint (bond) spot is melted by a laser beam in an inert gas atmosphere
and others.

Steel structures and components for the rail industry – quality

Material removal processes cause specific changes in the material. There is less of it at selected spots, or it is provided with a different shape. When making structures and components for the rail industry by welding, the steel also experiences other changes. Heat is generated at the joint spot that slightly reduces the resistance of the material against elongation, bending or compression.
However, if a suitable joining method is used, and if the amount of energy and the materials are chosen appropriately, reliable steel structures and components for the rail industry, characterised by strong joints, can be obtained.