Method for reconditioning a turbine blade

摘要

The method involves removing a sealing channel from an inner wall of a shovel blade (12) by forming a slot using an electrical discharge machining process. An insertion strip (24) is inserted into the slot for sealing the slot. The insertion strip inserted into the slot is firmly connected with the inner wall of the shovel blade, where the slot exhibits a dovetail-shaped cross section. The insertion strip is provided with another sealing channel after insertion into the slot and connection with the inner wall, where the latter channel runs in a longitudinal direction.