Method of laser removing of coating material from cooling holes of a turbine component

摘要

Method for processing a turbine component (1) with cooling channels (3) comprises determining three-dimensional coordinates of the position of the channels on the surface (4) of the component, determining three-dimensional coordinates of reference points (P 1, aP n) in the region of the outlet openings of the channels on the turbine component, coating the component, determining three-dimensional coordinates of the reference points on the component and calculating the thickness of the coating, coupling data and CAD data from the channels to guide a laser over volume segments of the coating material in the channels and moving a pulsed laser beam over the surface of each volume segment.