Control of case wall growth during repair and method
AssigneeUnited Technologies Corporation
InventorGanesh Anantharaman
Life of this patent
Estimating the term…
Abstract
A method for repairing a gas turbine engine component includes identifying a distorted feature located in a first portion of the component, identifying a second portion of the component that behaves as at least one of a heat sink or a stiffener, removing the second portion of the component from the first portion, cold working the first portion of the component to repair the distorted feature, heat treating the first portion of the component, and metallurgically joining the first portion of the component to the second portion of the component.
Claims15
A method for repairing a gas turbine engine component, the method comprising:
- identifying a distorted feature of the component, wherein the distorted feature is located in a first portion of the component;
- identifying a second portion of the component that behaves as at least one of a heat sink or a stiffener;
- removing the second portion of the component from the first portion;
- cold working the first portion of the component to repair the distorted feature without adding material to the distorted feature during cold working;
- heat treating the first portion of the component while the second portion of the component is removed from the first portion;
- and
- metallurgically joining the first portion of the component to the second portion of the component.
A method for repairing a metallic gas turbine engine component having a first portion, the method comprising:
- identifying a distorted feature of the component
- identifying by visual inspection a second portion of the component that behaves as at least one of a heat sink or a stiffener;
- removing the second portion of the component from the first portion;
- cold working the first portion of the component to repair the distorted feature without adding material to the distorted feature during cold working;
- heat treating the first portion of the component in a furnace;
- and
- welding the first portion of the component to the second portion of the component subsequent to heat treating the first portion of the component in a furnace.
A method for repairing a metallic gas turbine engine component having a first portion, the method comprising:
- identifying a distorted feature of the component
- determining temperature gradients of heat affected zones in response to an applied heat;
- identifying at least one of the heat affected zones as a second portion of the component that behaves as at least one of a heat sink or a stiffener;
- removing the second portion of the component from the first portion;
- cold working the first portion of the component to repair the distorted feature without adding material to the distorted feature during cold working;
- heat treating only the first portion of the component in a furnace;
- and
- welding the first portion of the component to the second portion of the component.
Dependencies are inferred from the claim text.