Method for sizing stubs optimized for orbital welding of blades on a turbomachine rotor
AssigneeSafran Aero Boosters SA
InventorsYann Jean-Pierre Lefaux, Damien Verhelst
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Abstract
A method for sizing a section of a junction by orbital friction welding with an eccentric e, between a blade and a stub of a bladed disk for a turbomachine. The sized section has a rounded contour at one or two ends of said section along a chord of the blades, each corresponding to a leading edge or a trailing edge of said blades, said rounded contour(s) having over a sector of at least 120° an average radius of at least twice the eccentric e.
Claims11
A method for sizing a section of a junction by orbital friction welding with an eccentric e, between a blade and a stub of a bladed disk for a turbomachine, wherein the sized section has a rounded contour at one or two ends of said section being disposed along a chord of the blade, each corresponding to a leading edge or a trailing edge of said blade, said rounded contour having over a sector of at least 120° an average radius of at least twice the eccentric e and at most six times the eccentric e.
A method for manufacturing a bladed turbomachine disk comprising the steps:
- provision of a disk with stubs;
- and
- joining of blade to the stubs by orbital friction welding, wherein the stubs of the disk are sized according to a method for sizing a section of a junction by orbital friction welding with an eccentric e, between a blade and a stub of a bladed disk for a turbomachine, wherein the sized section has a rounded contour at one or two ends of said section along a chord of the blade, each corresponding to a leading edge or a trailing edge of said blade, said rounded contour having over a sector of at least 120° an average radius of at least twice the eccentric e and at most six times the eccentric e.
A rotor disk for the manufacture of a bladed disk for a turbomachine, the rotor disk comprising an external surface provided with an annular row of stubs extending radially from said external surface, each of the stubs comprising a section to be welded by orbital friction with a blade, wherein said stubs are sized according to a method for sizing a section of a junction by orbital friction welding with an eccentric e, between a blade and a stub of the bladed disk for the turbomachine, wherein the sized section has a rounded contour at one or two ends of said section along a chord of the blade, each corresponding to a leading edge or a trailing edge of said blade, said rounded contour having over a sector of at least 120° an average radius of at least twice the eccentric e and at most six times the eccentric e.
Dependencies are inferred from the claim text.