Methods for re-establishing cooling holes in components having deformation
A system includes a laser drilling apparatus having a laser to drill into coating layers of a component. The component includes cooling holes through a substrate and an existing layer. The existing coating layer is stripped from the component. The locations of the cooling holes are mapped using a coordinate measurement machine that generates a macro file of the locations. The macro file is loaded onto the laser drilling apparatus. A new coating layer is applied that covers the cooling holes. The laser drilling apparatus collects data at the locations mapped to the macro file of the component having a new coating layer. A modification is made to the locations of the at least one cooling holes based on a parameter in the collected data. The laser drilling apparatus drills using the laser at the modified locations into the new coating layer.
1 . A method for re-establishing cooling holes on a component, the method comprising:
stripping an existing coating layer from a component;
generating a macro file of at least one mapped location of at least one cooling hole in a zone of the component, wherein the component includes a substrate having the at least one cooling hole and determining a first parameter corresponding to the component;
applying a new coating layer to the substrate of the component;
collecting data at the at least one mapped location of the component having the new coating layer and determining a second parameter corresponding the component and the application of the new coating layer;
determining a modification factor for the component based on the first parameter and the second parameter;
modifying the at least one mapped location of the at least one cooling hole specified by the macro file based on the modification factor; and
drilling the new coating layer using a laser at the at least one mapped location as modified based on the modification factor,
wherein the first parameter corresponds to a height of the component prior to the application of the new coating layer,
wherein the second parameter corresponds to a height of the component and the new coating layer.
2 . The method of claim 1 , further comprising mapping the at least one mapped location of the at least one cooling hole using a coordinate measurement machine to generate the macro file.
3 . The method of claim 1 , further comprising loading the macro file onto a laser drilling apparatus having the laser.
4 . The method of claim 1 , wherein the modification factor relates to a shift caused by applying the new coating layer at the mapped location.