Methods for repairing turbine components

摘要

A method is provided for repairing a turbine component with a distressed portion. The method includes machining the turbine component into a first intermediate turbine article such that the distressed portion is removed; and rebuilding the first intermediate turbine article into the turbine component with an additive manufacturing process.

主权项

1. A method for repairing a turbine component with a distressed portion, comprising the steps of:
machining the turbine component into a first intermediate turbine article such that the distressed portion is removed; and rebuilding the first intermediate turbine article into the turbine component with an additive manufacturing process, wherein the turbine component includes internal passages, and wherein the rebuilding step includes rebuilding at least some of the internal passages with the additive manufacturing process; encapsulating the turbine component with an encapsulation layer, wherein the encapsulating step includes encapsulating within the internal passages; consolidating the turbine component and the encapsulation layer, wherein the encapsulating step includes converting surface connected defects to internal defects prior to the consolidating step, and wherein the consolidating step includes hot isostatic pressing; and removing the encapsulation layer after the machining, rebuilding, encapsulating, and consolidating steps.