Method and apparatus for clamping large assemblies for diffusion bonding and superplastic forming
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United States of America Patent
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Mar 26, 1991
Grant Date -
N/A
app pub date -
Jul 6, 1990
filing date -
Jul 6, 1990
priority date (Note) -
Expired
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Abstract
A clamping method and apparatus for applying the necessary pressure to an sembly of metal parts during diffusion bonding and/or superplastic forming of the parts. Basically, the apparatus comprises a pair of opposed generally L-shaped frames having a cavity therebetween for holding the assembly of parts and associated shaping tooling. The frames are pivotable about a hinge connecting first ends, with a mechanism at the opposite ends for moving the frames together in a clamping manner or apart to allow access to the cavity. The tooling within the cavity typically includes a pressure vessel having a housing containing ceramic forming members having an internal volume within which metal parts to be shaped and/or bonded are placed. The parts are subjected to heat and pressure during processing. This apparatus and method are particularly suitable for manufacturing elongated metal products having a generally box-like cross section.
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