Abstract: A method for modifying an aperture in a component, a system for modifying flow through a component, and a turbine component are disclosed. The method includes providing a substrate having at least one aperture having an electrically-conductive surface, providing a deposition device including an ESD torch, the ESD torch including an aperture penetrating electrode including a conductive material, inserting the aperture penetrating electrode at least partially into the aperture, and generating an arc between the aperture penetrating electrode and the electrically-conductive surface to deposit electrode material within the aperture. The system includes the ESD torch removably supported in an electrode holder. The turbine component includes at least one aperture having an electrospark deposited material along an electrically-conductive surface, the electrospark deposited material providing modified fluid flow through the turbine component.

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 turbine component surface treatment process includes passing a UV-curable maskant through one or more fluid flow passages, wherein at least a portion of the UV-curable maskant exits the one or more fluid flow passages at an exterior surface of the turbine component, applying a UV light to the exterior surface of the turbine component, wherein the UV light cures at least a portion of the UV-curable maskant exiting the one or more fluid flow passages, and, treating the exterior surface with a treatment material, wherein the portion of the UV-curable maskant cured by the UV light substantially blocks the treatment material from entering the one or more fluid flow passages.

Abstract: A method for modifying an aperture in a component, a system for modifying flow through a component, and a turbine component are disclosed. The method includes providing a substrate having at least one aperture having an electrically-conductive surface, providing a deposition device including an ESD torch, the ESD torch including an aperture penetrating electrode including a conductive material, inserting the aperture penetrating electrode at least partially into the aperture, and generating an arc between the aperture penetrating electrode and the electrically-conductive surface to deposit electrode material within the aperture. The system includes the ESD torch removably supported in an electrode holder. The turbine component includes at least one aperture having an electrospark deposited material along an electrically-conductive surface, the electrospark deposited material providing modified fluid flow through the turbine component.

Abstract: A method for modifying an aperture in a component, a system for modifying flow through a component, and a turbine component are disclosed. The method includes providing a substrate having at least one aperture having an electrically-conductive surface, providing a deposition device including an ESD torch, the ESD torch including an aperture penetrating electrode including a conductive material, inserting the aperture penetrating electrode at least partially into the aperture, and generating an arc between the aperture penetrating electrode and the electrically-conductive surface to deposit electrode material within the aperture. The system includes the ESD torch removably supported in an electrode holder. The turbine component includes at least one aperture having an electrospark deposited material along an electrically-conductive surface, the electrospark deposited material providing modified fluid flow through the turbine component.

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 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: Various embodiments include a turbomachine diaphragm ring. In various particular embodiments, a turbomachine diaphragm ring includes: a packing slot sized to house a dovetail section of a turbomachine packing, the packing slot extending circumferentially about a rotational axis of the turbomachine; a key slot connected with the packing slot sized to house a portion of a key member, the key slot extending at least one of radially or axially from the packing slot; and a retaining slot connected with the key slot and extending substantially circumferentially from the key slot, the retaining slot sized to house a retaining member for retaining the key member.

Abstract: A turbine component surface treatment process includes passing a UV-curable maskant through one or more fluid flow passages, wherein at least a portion of the UV-curable maskant exits the one or more fluid flow passages at an exterior surface of the turbine component, applying a UV light to the exterior surface of the turbine component, wherein the UV light cures at least a portion of the UV-curable maskant exiting the one or more fluid flow passages, and, treating the exterior surface with a treatment material, wherein the portion of the UV-curable maskant cured by the UV light substantially blocks the treatment material from entering the one or more fluid flow passages.

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: Turbine components include at least one fluid flow passage at least one aperture disposed on a surface of the turbine component and fluidly connected to the at least one fluid flow passage. The at least one aperture includes a floor extending from the at least one fluid flow passage to the surface; and, a step disposed between an inner portion of the floor and an outer portion of the floor such that the inner portion of the floor and the outer portion of the floor do not comprise a single planar surface.

Abstract: Turbine component coating processes include applying a malleable masking material to one or more apertures of one or more fluid flow passages within a turbine component surface and then applying a first coating over the malleable masking material and on the turbine component surface. The turbine component coating processes further include locally applying a local masking material to the one or more apertures of the one or more fluid flow passages and then applying a second coating over the local masking material and on the first coating.

Abstract: A coating process is provided. The coating process includes positioning a component within an enclosed coating system, the enclosed coating system including a coating apparatus, applying a first coating over at least a portion of the component, then robotically applying a mask to the component, then applying a second coating over at least the portion of the component. The component remains within the enclosed coating system throughout the process. Another process also includes removing a first coating head portion of the coating apparatus after applying the first coating and replacing the first coating head portion with a masking head portion, then removing the masking head portion after robotically applying the mask to the component and replacing the masking head portion with a second coating head portion.

Abstract: Methods for selective localized coating deposition for a turbine component include providing the turbine component comprising an exterior surface with one or more surface features and selectively coating at least a portion of the exterior surface using a localized coating deposition apparatus based on a location of at least one of the one or more surface features.

Abstract: A turbine component patch delivery system can include a support arm and a deposition tool supported by the support arm. The deposition tool can include a reservoir configured to house a turbine component patch material and a dispenser configured to dispense the turbine component patch material from the reservoir onto a surface of a turbine 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: 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 repair method is provided and includes deriving, from a model of a component, drilling vectors respectively associated with fluid flow passages of the component, obtaining location data of each of the fluid flow passages at least partially from a source other than the model and relying upon the derived drilling vectors and the obtained location data of each of the fluid flow passages to position a tool configured to modify each of the fluid flow passages.

Abstract: A method for modifying an aperture in a component, a system for modifying flow through a component, and a turbine component are disclosed. The method includes providing a substrate having at least one aperture having an electrically-conductive surface, providing a deposition device including an ESD torch, the ESD torch including an aperture penetrating electrode including a conductive material, inserting the aperture penetrating electrode at least partially into the aperture, and generating an arc between the aperture penetrating electrode and the electrically-conductive surface to deposit electrode material within the aperture. The system includes the ESD torch removably supported in an electrode holder. The turbine component includes at least one aperture having an electrospark deposited material along an electrically-conductive surface, the electrospark deposited material providing modified fluid flow through the turbine component.

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.