Metal fusion bonding – Process – With shaping
Patent
1988-10-31
1991-01-29
Heinrich, Sam
Metal fusion bonding
Process
With shaping
228118, 228193, 228243, 228 443, 219 7802, B23K 2000, B23K 2022, B23K 1900
Patent
active
049880373
ABSTRACT:
A method and apparatus for superplastic forming and diffusion bonding of hollow metal parts. A forming assembly is prepared by surrounding a hollow tool (typically having a frusto-conical exterior) with a part blank having a corresponding shape, attaching parts, such as rings, to the exterior of the blank, then surrounding those parts with a skin blank. The forming assembly is placed in a pressure chamber, a heater is placed within the assembly and the chamber is sealed. The assembly of parts is heated to the diffusion bonding temperature of the parts while subjecting them to high gas pressure. The skin blank is deformed into intimate contact with the adjacent surfaces of the other parts and all of the parts are diffusion bonded together at all interfaces to form a unitary product. Gas pressure is released and the product is cooled and removed from the chamber and hollow tool. Any desired finish machining is accomplished and the productive is complete.
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Gilliam Frank D.
Heinrich Sam
Rohr Industries, Inc.
Schlesinger Patrick J.
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