Method for diffusion welding under isostatic pressure

Details Method for diffusion welding under isostatic pressure Method for diffusion welding under isostatic pressure

1987-03-09

1989-03-14

Godici, Nicholas P.

Metal fusion bonding

Process

Diffusion type

228248, B23K 3512

Patent

active

048118923

ABSTRACT:
Structural parts, particularly of complicated shape, are diffusion welded to each other under isostatic pressure to form permanent joints. A two phase operation is involved in the joint formation. In the first phase at least one of the welding joint forming surfaces of the two parts to be joined, is provided with a material which will form a metallurgical layer in the gap between the two surfaces forming the welding joint. The metallurgical layer forming material may be applied to one or both joint forming surfaces prior to assembly of the parts or the material may be introduced into the gap between the surfaces after the parts have been assembled. In both instances it is the aim to seal the gap prior to the second phase in which a diffusion welding is performed in a hot isostatic press.

REFERENCES:
patent: 2456418 (1948-12-01), Imerman
patent: 4008844 (1977-02-01), Duvall et al.
patent: 4051585 (1977-10-01), Walker et al.
patent: 4150776 (1979-04-01), Lisgourgues

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