TURBINE ROTOR MODERNIZATION AND REPAIR METHOD

摘要

An improved method for repairing damaged or worn surfaces of turbine components or upgrading older designs to new, improved designs that includes depositing a plurality of individual spaced apart weld volumes onto a prepar ed surface of a turbine rotor. The multiple weld volumes are formed concurrently with a space maintain between each weld volume using multiple torches. Each individual spaced apart weld volume is formed by a plurality of layers of weld metal, with eac h layer being formed from a single oscillating weld bead to form a predetermined wid th (W). The filler wire weld metal may be heated by applying a current through the filler wire before it is fed into the weld pool.