Metal treatment – Process of modifying or maintaining internal physical... – Producing or treating layered – bonded – welded – or...
Reexamination Certificate
2007-02-20
2007-02-20
McNeil, Jennifer C. (Department: 1775)
Metal treatment
Process of modifying or maintaining internal physical...
Producing or treating layered, bonded, welded, or...
Reexamination Certificate
active
10963793
ABSTRACT:
A thermally loaded component (10), in particular a rotor for a steam or gas turbine, includes a plurality of component sections which, during operation, are exposed to different temperature levels, a first component section being designed for temperatures of >750° C., a second component section being designed for temperatures of approximately between 750° C. and 600° C., and a third component section being designed for temperatures of <600° C. In a component of this type, the production costs are reduced while at the same time ensuring a sufficient mechanical strength by virtue of the fact that the component (10) includes different materials in the component sections which are subject to different levels of thermal loading, the first component section including a precipitation-hardened nickel-base alloy, the second component section including a solution-annealed nickel-base alloy and the third component section including a high-temperature-resistant steel, and that the component (10) with its different component sections is constructed of individual elements (12, . . . , 17) which are welded to one another and each form a component section.
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ALSTOM Technology Ltd.
Baldwin Gordon R.
Cermak Adam J.
Cermak & Kenealy LLP
McNeil Jennifer C.
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