Mainline grinding VS Switch grinding

Mainline grinding   VS  Switch grinding

Mainline grinding and switch grinding are two different techniques used in rail grinding operations.

Mainline grinding involves grinding the entire length of the rail, including the straight sections and curves. The main objective of mainline grinding is to remove any defects or irregularities on the rail surface, such as corrugation, ripples, and spalling. By grinding the entire rail length, mainline grinding helps to improve rail surface conditions, enhance ride quality, and reduce rolling contact fatigue.

Switch grinding, on the other hand, focuses specifically on grinding the areas around railway switches and crossings. Switches are critical components of the rail network as they allow trains to change tracks. Due to the complex geometry and high wheel loads associated with switches, the rail surface in these areas undergoes significant wear and tear. Switch grinding is aimed at addressing switch-specific issues, such as rail head check, surface cracks, and profile irregularities. The objective of switch grinding is to improve the operational performance and reduce the maintenance requirements of switches and crossings.