Method for repairing and producing integrally bladed rotors for a turbine or turbo engine

A method for repairing an integrally bladed rotor for a turbine or turbo engine, the rotor including a plurality of projecting vanes arranged on a peripheral surface of a carrier, the method comprising the steps of:

• removing a vane section to be replaced so that a stub section of the vane section to be replaced remains, the stub section having a front face configured to be bonded to a replacement vane section;
• arranging an inductor around the front face of the stub section;
• positioning the replacement vane section corresponding to the removed vane section on the stub section, one surface of the replacement vane section and the front face of the stub section being substantially aligned with and opposite to each other at a small distance;
• and
• welding the replacement vane section to the stub section in a protective gas atmosphere by exciting the inductor with a high-frequency current and moving the replacement vane section and the stub section together to contact a softened to melted front face of the stub section and a softened to melted surface of the replacement vane section.