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US 10,472,729 B2Granted
Abrasive tip blade manufacture methods
AssigneeUnited Technologies Corporation
InventorsChristopher W. Strock, James O. Hansen
Life of this patent
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Abstract
A method is provided for manufacturing a blade. The blade comprises an airfoil (100) having: a root end and a tip (106); a metallic substrate (102) along at least a portion of the airfoil; and an anodized layer (154). The method comprises roughening the tip to form protrusions (158′; 402′) and anodizing to form the anodized layer so that the protrusions form an abrasive (156; 400).
Claims9
A method for manufacturing a blade, the blade comprising:
- an airfoil having:
- a root end and a tip;
- a metallic substrate along at least a portion of the airfoil;
- and
- an anodized layer;
- the method comprising:
- roughening the tip to form protrusions with characteristic heights of 0.025 mm to 0.25 mm, the roughening comprising raising a burr, the raising the burr comprising indenting;
- and
- anodizing to form the anodized layer so that the protrusions form an abrasive.
6 more elements
Dependencies are inferred from the claim text.