Joining method
AssigneeROLLS-ROYCE plc
InventorsAndrew R Walpole, John P E Forsdike, Gavin J Baxter, Simon E Bray, Alistair J E Smith
Life of this patent
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Abstract
A method of joining a first component to a second component at respective connection surfaces, comprising, in order, applying a local surface treatment to the connection surface of at least one of the first and second components in order to locally alter the microstructure to a depth of between 60 μm and 10 mm below the connection surface; and joining the first component to the second component using a welding process.
Claims15
A method of joining a first component to a second component at respective connection surfaces, comprising in order:
- applying a local surface treatment to the connection surface of at least one of the first and second components in order to locally alter the microstructure to a depth of between 60 μm and 10 mm below the connection surface;
- and
- joining the first component to the second component using a welding process,
- wherein both the local surface treatment and the welding process are separate friction welding processes.
A method of joining a first component to a second component at respective connection surfaces, comprising in order:
- applying a local surface treatment to the connection surface of at least one of the first and second components in order to locally alter the microstructure to a depth of between 60 μm and 10 mm below the connection surface, wherein the local surface treatment comprises welding the first component to the second component, followed by separating the first component from the second component;
- and
- subsequently joining the first component to the second component using a welding process.
Dependencies are inferred from the claim text.