Near-net shape shield and fabrication processes
AssigneeGeneral Electric Company
InventorTheodore William FANDREI, II
Life of this patent
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Abstract
A process of fabricating a shield, a process of preparing a component, and an erosion shield are disclosed. The process of fabricating the shield includes forming a near-net shape shield. The near-net shape shield includes a nickel-based layer and an erosion-resistant alloy layer. The nickel-based layer is configured to facilitate secure attachment of the near-net shaped to a component. The process of preparing the component includes securing a near-net shape shield to a substrate of a component.
Claims20
A near-net shape shield, comprising:
- a nickel-based layer;
- and
- an erosion-resistant alloy layer positioned at least partially on the nickel-based layer;
- the near-net shape shield having a near-net shape with a geometry and a size requiring little or no machining or processing after the near-net shape is formed within a die;
- wherein, prior to attachment to a turbine component, the near-net shape shield is configured to be positioned on a surface of the turbine component;
- and
- wherein the geometry of the near-net shape shield comprises at least one feature selected from the group consisting of cavities, protrusions, gaps, and combinations thereof.
A fabrication process comprising:
- securing a near-net shape shield to a substrate of a component;
- wherein the near net shape shield comprises a nickel-based layer and an erosion-resistant alloy layer positioned at least partially on the nickel-based layer;
- wherein the near-net shape shield has a near-net shape with a geometry and a size requiring little or no machining or processing after the near-net shape is formed;
- wherein, prior to attachment to the substrate of the component, the near-net shape shield is configured to be positioned on the substrate of the component;
- and
- wherein the geometry of the near-net shape shield comprises at least one feature selected from the group consisting of cavities, protrusions, gaps, and combinations thereof.
A fabrication process comprising:
- forming a shield to a net shape within a die, the net shape including a geometry and size requiring no machining or processing after forming the shield within the die and corresponding to a surface of a component to be protected by the shield and configured to be attached to the surface of the component;
- wherein the shield includes a nickel-based layer and an erosion-resistant alloy layer positioned at least partially on the nickel-based layer;
- and
- wherein the geometry of the near-net shape shield comprises at least one feature selected from the group consisting of cavities, protrusions, gaps, and combinations thereof.
The fabrication process of claim 99, wherein the securing is by a technique selected from the group consisting of brazing, laser welding, electron beam welding, plasma welding, tungsten inert gas welding, and combinations thereof.
Dependencies are inferred from the claim text.