Patent ID: 8029865

Claim:
A method for elevated-temperature hard-material processing of blade airfoils of a blisk for a gas turbine, comprising: insulating portions of the blisk other than the blade airfoils against an elevated temperature atmosphere used for the processing; loading the blisk as a whole into at least one of a heat treatment furnace and a coating cabinet for processing at an elevated temperature required for at least one of heat treating and coating; partially cooling at least some of the insulated portions of the brisk with at least one of a solid and a liquid cooling medium while the blade airfoils are exposed to the elevated temperature required for the at least one of heat treating and coating; enclosing the insulated portions of the blisk with at least two opposing cooling plates which are thermally insulated at their outer surfaces, and between which, front faces of blade platforms of the blisk are heat-conductively located on supporting flanges, and applying a cooling medium from a cooling medium source to inner surfaces of the supporting flanges and the blade platforms through radial cooling medium channels positioned on an interior of the cooling plates.