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US 12,601,273 B2Granted
Stator vane braze joints
AssigneePratt & Whitney Canada Corp.
InventorPiotr Szczesnowicz
Life of this patent
Estimating the term…
Abstract
A stator stage has: at least a first shroud being an inner diameter shroud or an outer diameter shroud; and vanes mounted to the first shroud. Each vane has a mounting foot received in an aperture in the first shroud and brazed thereto. The mounting foot has a periphery with texturing. Braze material joins the texturing to a surface of the associated aperture.
Claims20
A stator stage comprising:
- at least a first shroud being an inner diameter shroud or an outer diameter shroud;
- and
- a plurality of vanes mounted to the first shroud, each vane having a mounting foot received in an aperture in said first shroud and brazed thereto,
- wherein:
- the mounting foot has a periphery with texturing;
- the texturing extends past an adjacent surface of the first shroud;
- braze material joins the texturing to a surface of the associated aperture;
- each of the plurality of vanes has an airfoil;
- each of the mounting feet has a concave fillet transition to the associated airfoil;
- and
- the braze material does not extend to the fillet transition.
8 more elements
A method for manufacturing a stator stage, the stator stage comprising:
- at least a first shroud being an inner diameter shroud or an outer diameter shroud;
- and
- a plurality of vanes mounted to the first shroud, each vane having an airfoil and a mounting foot received in an aperture in said first shroud and brazed thereto,
- the method comprising:
- for each of the mounting feet, a step for texturing a periphery of the mounting foot;
- inserting the mounting foot to the associated aperture;
- and
- brazing the mounting foot to the first shroud, wherein the texturing extends past an adjacent surface of the first shroud and the braze material does not extend to a concave fillet transition to the airfoil.
5 more elements
Dependencies are inferred from the claim text.