Hollow component manufacture

Details Hollow component manufacture Hollow component manufacture

1995-04-28

1997-03-18

Walberg, Teresa J.

Electric heating

Metal heating

For bonding with pressure

219 861, 219 912, 228157, 2281733, B23K 1111, B23K 1134, B23K10104

Patent

active

056119445

ABSTRACT:
In a method of manufacturing a hollow component metallic sheets are diffusion bonded together except where a stop off pattern is applied to the surfaces of the sheets. A gas channel is accommodated in the thickness of the sheets for the entry of pressurised gas under superplastic forming conditions to produce the hollow component. The material defining the gas channel is locally deformed by forging to reduce the height of the gas channel in order that a subsequent fusion welding pass over the deformed area defining the gas channel hermetically seals the gas channel.

REFERENCES:
patent: 2820286 (1958-01-01), Andrus
patent: 3066393 (1962-12-01), Malagari et al.
patent: 4429824 (1984-02-01), Woodward
patent: 5263638 (1993-11-01), Douglas
patent: 5284288 (1994-02-01), Woodward
patent: 5449109 (1995-09-01), Chuang et al.

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