摘要:
A method and system that includes generation of an energy beam. The energy beam may be generated from a focused energy source. Additionally, the energy beam may be directed towards a pre-sintered preform. The pre-sintered preform may be made of a braze material and may seal a hole that may be located in a turbine component.
摘要:
Hybrid repair plugs include an alloy core and a sintered preform shell at least partially surrounding the alloy core, wherein the sintered preform shell includes a mixture comprising a base alloy comprising about 30 weight percent to about 90 weight percent of the mixture and a second alloy including a sufficient amount of a melting point depressant to have a lower melting temperature than the base alloy.
摘要:
A process for creating a near-surface cooling passage in an air-cooled turbomachine component. The process entails forming a channel in a surface of a surface region of the component so that the channel is open at the surface and fluidically connected to a first cooling passages within the component. A metallic layer is then deposited on the surface and over the channel without filling the channel. The metallic layer closes the channel at the surface of the surface region to define therewith a second cooling passage within the component that is fluidically connected to the first cooling passages. A coating system is then deposited on the metallic layer to define an outermost surface of the component. The second cooling passage is closer to the outermost surface of the component than the first cooling passages.
摘要:
A method of weld repairing an air-cooled aft frame of a transition piece of a gas turbine engine. The transition piece has an interior surface coated with a ceramic coating. The aft frame has a surface with cooling holes therein and from which cracks have propagated. The method includes removing the transition piece from the engine and, without removing the ceramic coating or the aft frame from the transition piece, weld repairing the cracks by performing a laser beam welding technique that deposits a filler material on the surface but does not close the cooling holes in the surface. The surface of the aft frame can be machined to remove excess filler material prior to re-installing the transition piece in a gas turbine engine.
摘要:
According to one aspect of the invention, a method for in situ repair of a turbine part is provided. The method includes the steps of accessing the turbine part while assembled to other turbine components, wherein the turbine part comprises a region with a structural flaw near a hole in the turbine part, wherein the hole is configured to flow a cooling fluid and welding the structural flaw without performing a heat treatment of the turbine part, wherein welding the structural flaw comprises laser welding that maintains a structure of the region.
摘要:
A method and system that includes generation of an energy beam. The energy beam may be generated from a focused energy source. Additionally, the energy beam may be directed towards a pre-sintered preform. The pre-sintered preform may be made of a braze material and may seal a hole that may be located in a turbine component.
摘要:
A turbine blade closure system composed of a closure member capable of being friction welded in an aperture in a hollow-cast turbine blade to prevent the escape of cooling fluids from an internal cavity in the turbine blade. In one embodiment, the aperture is formed in the turbine blade during the manufacturing process as a result of one or more support projections used to position a core block in a turbine blade mold.