Method of repairing an airfoil having tip cooling passages
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United States of America
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Jan 7, 2025
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N/A
app pub date -
Nov 3, 2023
filing date -
Nov 3, 2023
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Abstract
A method of repairing an airfoil of a turbine component is provided. The airfoil includes a tip rail that at least partially defines a plurality of tip cooling passages. The turbine component having undergone at least one operational cycle such that a tip portion of the tip rail is outside of a design specification range. The method includes removing the tip portion of the tip rail such that a workpiece interface is defined at a radially outer end of the airfoil. After removing the tip portion, at least one tip cooling passage of the plurality of tip cooling passages extends to an opening on the workpiece interface. The method further includes additively manufacturing an extension segment onto the workpiece interface. The method further includes machining the extension segment to form a replacement tip portion of the tip rail that is within the design specification range.
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