METHOD AND SYSTEM FOR REDUCING OVERSIZED HOLES ON TURBINE COMPONENTS

摘要

A system is disclosed for reducing an internal diameter of a hole in a metal substrate. The system includes an electrospark device having an electrospark torch and an electrode holder rotatable about an axis. An electrode is removably supported in the electrode holder. The electrospark device configured to apply a coating of a material of which the electrode is formed, to the substrate on an inner wall of the hole when the electrode is rotated within the hole.