TURBINE ROTOR FOR AN EXHAUST-GAS TURBINE AND METHOD FOR PRODUCING THE TURBINE ROTOR

摘要

A turbine rotor as a turbine impeller made of a high-temperature-resistant metal alloy and a rotor shaft made of steel. The impeller hub and the rotor shaft end are connected together in a metallurgically bonded manner by way of a brazed connection. Between the end faces of the impeller hub and of the rotor shaft end, a brazing gap filled with brazing alloy is arranged concentrically with the rotation axis of the turbine rotor. A width of the soldering gap is previously determined by circularly peripheral removal of material on the end face of the impeller hub or the end face of the rotor shaft end, and the brazing connection is produced by an electron beam soldering process.