When we have worn-out metal parts, laser helps us to weld worn out layer or protecting layer. By this way we can weld for example worn out cutter, shaft under bearing, damaged molds for castings, or weld the layer resistant to mechanical worn out.
Materials designed for welding enable us to create the layers from 0.2 mm up from materials which are resistant to worn-out by friction or higher thermal pressure, and there is no need to have them thermally processed.