Welding by hot isostatic pressing (HIP)

Details Welding by hot isostatic pressing (HIP) Welding by hot isostatic pressing (HIP)

1983-03-25

1984-12-04

Ramsey, Kenneth J.

Metal fusion bonding

Process

Diffusion type

228243, 228248, 419 9, 419 49, B23K 2000, B22F 708

Patent

active

044859619

ABSTRACT:
A method of joining together component parts of a solid, preferably metallic, material into a composite element by hot isostatic pressing involves forming the parts so that good contact is obtained between surfaces at a joint where the surfaces are to be joined together. The joint is covered by a layer of a powder or a mixture of powder with substantially the same composition as the material in the different component parts. This powder layer is covered by one or more layers of glass powder, which upon heating forms a gas-impermeable layer. Between the powder layer covering the joint and a glass powder layer nearest to said layer there may be applied an intermediate layer of a powder having a melting point which is above the temperature to be used for the isostatic pressing. The assembly of parts and layers is pressed isostatically in a known manner at such a temperature that diffusion bonding is achieved at the contact surfaces.

REFERENCES:
patent: 3442010 (1969-05-01), Albers
patent: 3465422 (1969-09-01), Stenerson
patent: 3716347 (1973-02-01), Bergstrom et al.
patent: 4212669 (1980-07-01), Veeck et al.
patent: 4446100 (1984-05-01), Adlerborn et al.

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