Introduced built-up welding welding rod's selection principle and built-up welding craft when the Angle steel shearing punch built-up welding.

If the set collar end hardness is lower than HRC40, should first on the end surface again a built-up welding hard alloy, after the polish repackaging.

The paper analyzes the reason for the rail connection squished and recommends the process of restoring the track applying the built-up welding technology.