Metal fusion bonding – Process – Using a compliant cushioning medium
Patent
1974-09-26
1977-03-22
Smith, Al Lawrence
Metal fusion bonding
Process
Using a compliant cushioning medium
228181, 228193, 228234, 228221, B23K 1900
Patent
active
040132102
ABSTRACT:
A method of making a composite diffusion bonded structure, comprising a honeycomb panel portion made up of a honeycomb core sandwiched between two face sheets, and a load carrying structural member bonded thereto. The honeycomb core, face sheets and structural member are preassembled in a vacuum furnace so as to permit exposure of the surfaces which are to be diffusion bonded. A vacuum is drawn and the assembly is heated to near diffusion bonding temperature with the bonding surfaces still exposed to the vacuum environment. Thereafter, the bonding surfaces are brought into contact with very moderate pressure, and are maintained at a temperature and pressure sufficient for diffusion bonding. The assembly is then cooled, with the result being a substantially unitary diffusion bonded structure.
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Hughes Robert B.
Ramsey K. J.
Smith Al Lawrence
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