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US 10,052,716 B2Granted
Manufacture of a drum for a gas turbine engine
AssigneeROLLS-ROYCE plc
InventorsJames R Lloyd, Oliver Jones, Jamie Sismey, Luke Freeman
Life of this patent
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Abstract
A method for the manufacture of a blisk drum is described. Disc forging for inertia welding together are provided with sacrificial material whose shape and position is selectively provided such that, on completion of the inertia welding process, integral blades can be fashioned from the sacrificial material. Other components such as buckets and balancing lands may also be provided from the sacrificial material.
Claims13
A method for the manufacture of a blisk drum for use in a gas turbine engine, the method comprising, in sequence;
- providing a plurality of disc forging, at least one of which is proportioned to enable a blisk to be cut from the forging and each including sacrificial material;
- arranging two disc forging in axial alignment for welding in an inertia welding machine;
- performing inertia welding to provide a joined disc forging;
- fashioning at least some of the sacrificial material into blades whereby to form a blisk drum;
- wherein the sacrificial material on a disc forging is configured to provide at least one planar force balancing surface to which an axial force can be applied during inertia welding and at least one holding surface which can be fixed in position with respect to an inertia welding machine used to perform the inertia welding.
2 more elements
Dependencies are inferred from the claim text.