What is the standard routine for aligning rail ends?

The standard routine for aligning rail ends emphasizes the correct sequence and considerations necessary for ensuring proper alignment of rails during welding. The correct sequence begins with the rough crown, which establishes the initial positional relationship between the rails' surfaces. This is critical since the rough crown helps to provide a basic level of curvature that must be taken into account before finer adjustments are made.

Following the rough crown, alignment is focused on the gauge face of the base. This step is crucial for ensuring that the rails are correctly positioned in terms of their width and alignment with the track gauge. Accurate alignment at the gauge face is important for maintaining consistent track integrity and operational safety.

Next, addressing the gauge face of the rail head allows for final adjustments to be made at the top surfaces of the rails. Accurate alignment at this point ensures that the rails will sit correctly relative to the train wheels, promoting smoother rides and reducing wear on both the tracks and vehicles.

Finally, adjustments to the final crown address the end conditions of the rail. This step ensures that the final alignment meets the specifications for both curvature and elevation, creating the best possible ride and reducing the risk of derailment.

By following this ordered routine, all critical aspects of rail geometry are effectively aligned, ensuring both safety and functionality in