Patent ID: 7179342
Filing Date: 2007-02-20
Classification: B23K,F01D,Y10T

Abstract:
1. A process for producing a thermally loaded component, wherein the thermally loaded component comprises: a plurality of component sections which, during operation, are exposed to different temperature levels, including a first component section configured and arranged for temperatures of >750° C., a second component section configured and arranged for temperatures of approximately between 750° C. and 600° C., and a third component section configured and arranged for temperatures of <600° C.; wherein the component sections which are subject to different levels of thermal loading comprise different materials, the first component section comprising a precipitation-hardened nickel-base alloy, the second component section comprising a solution-annealed nickel-base alloy, and the third component section comprising a high-temperature-resistant steel; the process comprising: welding together at least thee individual elements which, after said welding, together form said first, second, and third component sections; applying an interlayer of a solution-annealed nickel-based alloy in the region of the subsequent weld seam, to weld the individual element which forms the first component section to an individual element which forms another component section; solution annealing the individual element which forms the first component section before applying the interlayer; and precipitation-hardening said individual element which forms the first component section after applying the interlayer.