Patent application number | Description | Published |
20120328451 | PLATFORM COOLING PASSAGES AND METHODS FOR CREATING PLATFORM COOLING PASSAGES IN TURBINE ROTOR BLADES - A method for creating a platform cooling passage in a turbine rotor blade, wherein the turbine rotor blade comprises a platform at an interface between an airfoil and a root, wherein the platform includes a platform topside along an outboard surface. The method may include the steps of forming a recessed area along the platform topside; forming a coverplate; and affixing the coverplate to the platform topside. The coverplate may be configured to correspond to the shape of the recessed area such that, when affixed to the platform topside in a desired manner, the coverplate substantially encloses the recessed area to form the platform cooling passage therein. | 12-27-2012 |
20130180952 | PRESSURE MASKING SYSTEMS AND METHODS FOR USING THE SAME - Methods of treating a target surface of an article having one or more passageways includes fluidly connecting a pressure masker including pressurized masking fluid to a first side of at least one passageway, passing the pressurized masking fluid through the at least one passageway from the first side to a second side having the target surface, and treating the target surface of the article using a surface treatment system that disposes a surface treating material on the target surface, wherein the pressurized masking fluid passing through the at least one passageway prevents the surface treating material from permanently altering a cross sectional area of the at least one passageway. | 07-18-2013 |
20130192255 | FIXTURE ASSEMBLY FOR REPAIRING A SHROUD TILE OF A GAS TURBINE - A fixture assembly for securing at least one side rail to a shroud tile of a gas turbine is disclosed. The fixture assembly may include a first support member, a second support member, a first guide block and a second guide block. The first and second guide blocks may be formed from a material that has the same or a similar coefficient of thermal expansion as the material used to form at least one of the shroud tile and the at least one side rail. In addition, the first and second support members may be formed from a material that has a lower coefficient of thermal expansion than the material used to form the first and second guide blocks. | 08-01-2013 |
20130195642 | METHOD FOR REPAIRING A SHROUD TILE OF A GAS TURBINE - A method for repairing a shroud tile of a gas turbine is disclosed. The method may generally include removing a portion of the shroud tile along at least one of a first side and a second side of the shroud tile and securing at least one side rail to the shroud tile in place of the removed portion of the shroud tile. | 08-01-2013 |
20130248515 | HOT GAS TORCHES, HOT GAS TORCH SYSTEMS AND HOT GAS HEATING METHODS - Hot gas torches include a nozzle that includes an internal conduit that extends between an inlet end and an outlet end and a heating unit disposed external the internal conduit, wherein the heating unit heats the internal conduit such that a gas that enters the internal conduit at the inlet end is heated before it exits the internal conduit at the outlet end. | 09-26-2013 |
20130269351 | MICROMIXER ASSEMBLY OF A TURBINE SYSTEM AND METHOD OF ASSEMBLY - A micromixer assembly of a turbine system includes a plate having at least one aperture comprising a receiving diameter. Also included is at least one tube having an inlet and an outlet for receiving a flow and dispersing the flow to a combustor, wherein the at least one tube includes an inner diameter and an outer diameter, wherein the outer diameter is configured to fit within the receiving diameter of the at least one aperture, wherein the at least one tube is operably coupled at a location on the outer diameter to the receiving diameter of the at least one aperture by exerting a radial force on the inner diameter of the tube. | 10-17-2013 |
20130277348 | METHODS AND APPARATUSES FOR PREHEATED INTERVAL WELDING - Preheated interval welding methods for welding a weld material to a substrate material can include preheating the substrate material to a preheat temperature less than a solidus temperature of the substrate material, melting the weld material to produce molten weld material at a melting distance away from the substrate material, and applying the molten weld material in a plurality of intervals to the substrate material. | 10-24-2013 |
20130294904 | METHOD OF REPAIRING A TURBINE COMPONENT - A method of repairing a turbine component having an array of partitions is provided and includes machining one or more partitions of the array to remove trailing edge sections thereof, fabricating one or more replacement inserts, respectively locating the one or more replacement inserts in the one or more machined partitions and substantially simultaneously brazing the one or more replacement inserts to the one or more machined partitions. | 11-07-2013 |
20140014637 | SYSTEM AND METHOD FOR PERFORMING REMOTE WELDING OPERATIONS ON AN APPARATUS - A system for performing remote welding operations on an apparatus is disclosed. The system may generally include a welding chamber configured to house the apparatus and a robotic welder positioned within the welding chamber. The robotic welder may be configured to perform an actual welding operation on the apparatus. In addition, the system may include a welding simulation device positioned outside the welding chamber and a controller communicatively coupled to the robotic welder and the welding simulation device. The welding simulation device may be configured to perform a simulated welding operation corresponding to the actual welding operation. The controller may be configured to track the movement of the welding simulation device and control the operation of the robotic welder based on the movements of the welding simulation device. | 01-16-2014 |
20140099516 | BRAZED ARTICLES AND METHODS OF MAKING THE SAME - An article comprising a substrate, the substrate having a surface; a diffusion barrier layer disposed on a portion of the surface of the substrate, a brazing layer disposed on the diffusion barrier layer, the brazing layer comprising at least one diffusible element, wherein the diffusion barrier layer inhibits the at least one diffusible element from diffusing into the diffusion barrier layer and the substrate. Also provided herein is a method of making an article comprising providing a substrate, the substrate having a surface; forming a diffusion barrier layer on a portion of the surface of the substrate, the diffusion barrier layer being formed by electro-spark deposition; forming a brazing layer on the diffusion barrier layer, the brazing layer comprising at least one diffusible element, wherein the diffusion barrier layer inhibits the at least one diffusible element from diffusing into the substrate. | 04-10-2014 |
20140124100 | METHODS OF RESIZING HOLES - Methods of reducing an initial cross-sectional area of a hole in a component to a predetermined cross-sectional area including preparing a composition comprising at least an aluminum alloy with a melting temperature higher than aluminum, applying the composition to an interior surface of the hole, and then heating the component to cause a metal within the component to diffuse from the component into the composition and react with the aluminum alloy in the composition to form a coating on the interior surface of the hole. The heating step is performed to selectively modify the initial cross-sectional area of the hole and thereby directly attain the predetermined cross-sectional area thereof. | 05-08-2014 |
20140154954 | AUTOMATED POLISHING SYSTEMS AND METHODS - Automated polishing systems include a polisher for polishing the coating on the article and a robotic positioner for moving the polisher relative to the article on an automated path, wherein the polisher polishes at least a part of the coating during movement, a force feedback sensor for determining a force of the polisher against the article during polishing, and a controller for maintaining the polisher within a predetermined force range against the article based at least in part on the force determined by the force feedback sensor. | 06-05-2014 |
20140193664 | RECOATING PROCESS AND RECOATED TURBINE BLADE - Recoating process and recoated turbine blade are disclosed. The recoating process includes providing a coated turbine blade, then removing a portion of the thermal barrier coating system to form a partially-stripped turbine blade, then applying a bond recoat to the stripped region of the partially-stripped turbine blade; and then applying a thermal barrier recoat to the bond recoat to form a recoated turbine blade. The recoated turbine blade comprises the bond coating portion abutting the bond recoat, the thermal barrier coating portion abutting the thermal barrier recoat, and the stepped configuration. The coated turbine blade has a thermal barrier coating system positioned on a substrate. The partially-stripped turbine blade has a stripped region, a bond coating portion, a thermal barrier coating portion, and a stepped configuration. | 07-10-2014 |
20140202498 | COOLING HOLE CLEANING METHOD AND APPARATUS - Blockages of turbomachine cooling circuit cooling holes resulting from coating processes can be removed by introducing a cleaning agent into the cooling circuit. The cooling circuit can be connected to a cleaning agent supply under pressure, adding force on the blockage to chemical action by the cleaning agent. The cleaning agent is chemically reactive with the coating material and substantially chemically non-reactive with the underlying material of the cooling circuit and other parts of the turbomachine. A neutralization agent can also be introduced to reduce toxicity and/or action of the cleaning agent. | 07-24-2014 |
20140251951 | PRESSURE MASKING SYSTEMS AND METHODS FOR USING SAME IN TREATING TECHNIQUES - Systems and methods of treating, e.g., stripping and coating, a target surface of an article including a passageway are disclosed. The systems may fluidly connect a pressure masker including pressurized masking fluid to a first side of the passageway, passing the pressurized masking fluid through the passageway from the first side to a second side including the target surface, and, submerging at least a portion of the target surface in a treatment bath, wherein the pressurized masking fluid passing through the passageway prevents the treatment bath from entering the passageway. | 09-11-2014 |
20140263577 | JOINING METHODS AND TEMPERATURE CONTROLLED FLUID TREATING SYSTEMS FOR JOINING - Methods for joining material to an article comprising one or more passageways include fluidly connecting a temperature controlled fluid source comprising temperature controlled fluid to at least one passageway and passing the temperature controlled fluid through the at least one passageway, wherein the temperature controlled fluid at least partially controls a temperature profile of the article. The methods further include joining material to the article, wherein the temperature profile of the article at least partially controls a resulting joined material characteristic. | 09-18-2014 |
20140341743 | MODIFIED TURBINE BUCKETS AND METHODS FOR MODIFYING TURBINE BUCKETS - Methods for modifying a turbine buckets include removing at least an original outer edge for an entire length of the slash face of the turbine bucket and adding a new material to the slash face to build a new outer edge, wherein the new outer edge extends the entire length of the slash face. | 11-20-2014 |
20140356056 | HYBRID DIFFUSION-BRAZING PROCESS AND HYBRID DIFFUSION-BRAZED ARTICLE - A hybrid diffusion-brazing process and hybrid diffusion-brazed article are disclosed. The hybrid diffusion-brazing process includes providing a component having a temperature-tolerant region and a temperature-sensitive region, brazing a braze material to the temperature-tolerant region during a localized brazing cycle, then heating the component in a furnace during a diffusion cycle. The brazing and the heating diffusion-braze the braze material to the component, and the localized brazing cycle is performed independent of the diffusion cycle in the hybrid diffusion-brazing process. The hybrid diffusion-brazed article includes a component, and a braze material diffusion-brazed to the component with a filler material. The filler material has a melting temperature that is above a tolerance temperature of the component. | 12-04-2014 |
20150041450 | COMPOSITE ELECTRO-SPARK ELECTRODE AND METHODS OF ITS USE - Composite electro-spark electrodes, along with methods of their use in an electro-spark deposition process, are provided. The composite electro-spark electrode can include an electrode tip that is mechanically and electrically attached to a shank. The shank comprises a resistive material, and the electrode tip comprises a metal, with the metal of the electrode tip being less electrically resistive than the resistive material of the shank. Additionally, the metal of the electrode tip can be more thermally conductive than the resistive material of the shank. | 02-12-2015 |
20150071788 | MODIFICATION PROCESS AND MODIFIED ARTICLE - A modification process and modified article are disclosed. The modification process includes locating an area in an article, removing the area by machining to form a machined region, inserting a modification material into the machined region, securing the modification material to the article, machining the modification material flush with a geometry of the article, and applying a coating over at least a portion of the article. Another modification process includes locating an area under a suction side leading edge tip shroud fillet of an airfoil, removing the area by machining to form a hole, inserting a modification material having improved material properties as compared to an original base material into the hole, securing the modification material in place, machining the modification material and the airfoil to form a new fillet contour, and applying a coating over at least a portion of the airfoil. Also disclosed is the modified article. | 03-12-2015 |