Metal working – Method of mechanical manufacture – With testing or indicating
Reexamination Certificate
2005-12-19
2009-08-11
Cozart, Jermie E (Department: 3726)
Metal working
Method of mechanical manufacture
With testing or indicating
C029S407080, C029S527500, C072S377000
Reexamination Certificate
active
07571528
ABSTRACT:
A method for the manufacture of highly loadable components by precision forging, e.g., of gas turbine compressor blades with different stress zones, initially provides for the production of a preform in a one-step forming operation, e.g., casting or sintering, with further deformable volume zones with a certain volume concentration in the highly loaded areas. The preform is subsequently finish-forged at a deformation rate which is limited by the respective volumes and is merely directed to the load and strength-specific recrystallization and structural requirements in the critical stress zones of the component.
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Cozart Jermie E
Klima Timothy J.
Rolls-Royce Deutschland Ltd & Co KG
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