Abstract:
Coating methods and a coated substrate are provided. The coating method includes providing a component having an aperture formed in a surface thereof, arranging and disposing a hollow member on a portion of the surface to define a hollow space above the aperture corresponding to a shape of the aperture at the surface, applying at least one coating over the surface of the component and the hollow member to form an applied coating having an applied coating thickness, and removing at least a portion of the hollow member to expose the hollow space through the applied coating. The coated substrate includes a component having an aperture formed in a surface thereof, a hollow member arranged and disposed on the surface to define a hollow space above the aperture, and an applied coating over the surface of the component, the hollow space being exposed through the applied coating.
Abstract:
A system for locating at least one surface feature, such as a cooling aperture, on a turbine component is provided. The system includes at least one feature marker configured for placement adjacent to the at least one surface feature. The system also includes at least one sensor configured for non-visual detection of the at least one feature marker. The system also includes a control device coupled to the at least one sensor for receiving signals from the at least one sensor, wherein the signals represent data indicative of one of a presence of the at least one feature marker and an absence of the at least one feature marker.
Abstract:
A system for locating at least one surface feature, such as a cooling aperture, on a turbine component is provided. The system includes at least one feature marker configured for placement adjacent to the at least one surface feature. The system also includes at least one sensor configured for non-visual detection of the at least one feature marker. The system also includes a control device coupled to the at least one sensor for receiving signals from the at least one sensor, wherein the signals represent data indicative of one of a presence of the at least one feature marker and an absence of the at least one feature marker.
Abstract:
A method of protecting a hole in a component during a coating process is disclosed. The method includes: placing a plug in the hole, the plug including a water insoluble core and a water soluble layer surrounding at least a portion of an outer surface of the metal core. A coating is applied over the plug and at least a portion of the component. The component is immersed in water to dissolve the water soluble layer, allowing removal of the water insoluble core. Removal of the coating from over the hole and the water insoluble core from within the hole may follow.
Abstract:
A fluid flow orifice locating system for locating fluid flow orifices on a component includes a light source, an image capture device, and a controller operably connected to the image capture device. The controller is configured and disposed to create a fluid flow orifice map of the component based on contrast differences on a surface of the component.
Abstract:
A method of fabricating and repairing a gas turbine component having a plurality of cooling holes defined therein is provided. The method includes determining a parameter of a first cooling hole defined in the gas turbine component, and generating a tool path for forming a protective cap around the first cooling hole. The tool path is based at least partially on the parameter of the first cooling hole. The method also includes directing a robotic device to follow the tool path, and discharging successive layers of ceramic slurry towards the gas turbine component as the tool path is followed such that the protective cap is formed around the first cooling hole.
Abstract:
A turbomachine bucket may include an airfoil, a shank coupled to the airfoil, and an angel wing coupled to the shank, the angel wing having an axially extending tip sized to seal with a plurality of discouragers, each discourager having a different axial extent. Various methods for modifying an angel wing to accommodate different sized discouragers are also disclosed.
Abstract:
A fluid flow orifice locating system for locating fluid flow orifices on a component includes a light source, an image capture device, and a controller operably connected to the image capture device. The controller is configured and disposed to create a fluid flow orifice map of the component based on contrast differences on a surface of the component.
Abstract:
A system including: a masking applicator; and at least one computing device coupled with the masking applicator, the at least one computing device configured to provide instructions to the masking applicator to apply a masking material according to a masking plan for masking at least one cooling aperture in a turbomachine component during a cooling aperture coating process, the masking plan based upon at least one characteristic of the plurality of cooling apertures, the masking plan including masking the at least one cooling aperture using a first mask type.
Abstract:
A system includes a plurality of nozzles, a pump configured to pump a fluid through the nozzles, and a manifold configured to arrange the plurality of nozzles to substantially match a shape of a workpiece. Each nozzle of the plurality of nozzles is configured to impinge upon a section of the workpiece with the fluid.