Method for manufacturing or for repairing a component of a rotary machine as well as a component manufactured or repaired using such a method

A method for repairing a component of a rotary machine, the component extending in an axial direction and a radial direction vertical thereto, and comprising a plurality of inner channels, each inner channel extending from a first end in a center of the component to a second end at a radial limiting surface of the component, adjacent channels being respectively separated by a separating wall, the method comprising:

• identifying damaged areas of the component at the radial limiting surface or at one of the channels or at one of the separating walls;
• manufacturing a blank by a machining removal or by a separating removal of the damaged areas, the blank comprising a core of the center of the component;
• and
• replacing the removed damaged areas by a build-up process on the blank to manufacture the final form of the component,
• the blank being subtractively processed in a first subtractive process step in such a manner, that an outer contour is elaborated in the area of the outer surface, the contour extending at least in the radial direction, and then the channels are finished by a build-up process on the blank,
• the second end of the channel opening in the radial limiting surface of the component.