How can an internal wear ring be successfully removed?

An internal wear ring can be successfully removed by welding on the inside diameter of the ring. This technique is effective because welding on the inside diameter allows for thermal expansion to occur, which can create additional clearance between the ring and the housing. As the weld metal heats and then cools, it can cause the ring to expand and possibly warp slightly, making it easier to remove without damaging adjacent components.

Welding on the outside diameter and the face of the ring may not be as efficient for this specific application. Welding on the outside could potentially introduce stress in the surrounding assembly or not provide the necessary expansion required for removal, while welding on the face might compromise the integrity of the structure or make it difficult to access for proper removal techniques. Thus, focusing on the inside diameter provides a targeted approach to successfully extract the internal wear ring.