Metal fusion bonding – Process – With shaping
Patent
1997-11-26
2000-03-21
Heinrich, Samuel M.
Metal fusion bonding
Process
With shaping
228193, B23K 2002, B23K 3100
Patent
active
060392398
ABSTRACT:
The present invention provides a method of making a frame, particularly for the aircraft industry, having a central member (34) and one or more cantilever ribs (32); such a frame can be made by forging or machining but these are time-consuming and expensive. According to the present invention such frames are made by diffusion bonding and superplastic forming techniques, whereby a pack of sheets are bonded together except in certain areas. Gas is injected into those areas to inflate the pack superplastically to form one or more closed cells (16). The top of the cells is then machined off along line 23, while the side walls of the cells are retained, to provide a frame having cantilever ribs (32).
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Collier Alan Derek
Eastham John
Johnston Stephen Harold
British Aerospace PLC
Heinrich Samuel M.
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