Orbital friction welding method of a blade to a stub on a turbomachine rotor disc
AssigneeSafran Aero Boosters SA
InventorsAstrid Lenain, Charly Mougel
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Abstract
A process for orbital friction welding of a blade to a stub on a turbomachine rotor disk, comprising the following successive phases: friction of the blade against the stub with application of a force friction normal; forging of the blade against the stub with application of a normal forging force; wherein the normal forging force is greater than the normal friction force and essentially constant throughout the forging phase.
Claims15
A method for orbital friction welding of a blade to a stub on a turbomachine rotor disk, comprising the following successive steps:
- orbital friction welding of the blade against the stub with application of a normal friction force;
- and
- forging of the blade against the stub with application of a normal forging force, wherein the normal forging force is greater than the normal friction force and essentially constant throughout the forging step,
- wherein the orbital friction welding step comprises a contact step with a first normal friction force, followed by a material consumption step with a second normal friction force that is greater than the first normal friction force, and
- wherein the material consumption step starts when a first material consumption is equal to at least 0.1 mm.
A method for manufacturing a bladed disk for a turbomachine comprising a plurality of blades, each of said blades being welded to a stub on a rotor disk, wherein the welding of the blades to the stubs is orbital friction welding carried out according to a method for orbital friction welding of a blade to a stub on a turbomachine rotor disk, comprising the following successive steps:
- orbital friction welding of the blade against the stub with application of a normal friction force;
- and
- forging of the blade against the stub with application of a normal forging force, wherein the normal forging force is greater than the normal friction force and essentially constant throughout the forging step,
- wherein the orbital friction welding step comprises a contact step with a first normal friction force, followed by a material consumption step with a second normal friction force that is greater than the first normal friction force, and
- wherein the material consumption step starts when a first material consumption is equal to at least 0.1 mm.
Dependencies are inferred from the claim text.