Method for fabricating a structural assembly having narrow gaps

Details Method for fabricating a structural assembly having narrow gaps Method for fabricating a structural assembly having narrow gaps

1986-02-21

1988-06-28

Goldberg, E. A.

Electric heating

Metal heating

By arc

219136, B23K 902, B23K 9225

Patent

active

047541180

ABSTRACT:
A method for assembling narrow gap members by welding is described. In the method, separate narrow gap members having spaces therein when assembled are provided and a deformation-preventive material consisting of a water-soluble material or a material capable of being disintegrated with water is filled in each space and is formed with a through groove or hole in the filled preventive material. In this state, the separate narrow gap members are subjected to welding, and immersed in water to remove the deformation-preventive material from each space. The through grooves may have a width larger than a leg length of each penetration bead, in which a heat-resistant flux is filled in each groove. The deformation-preventive material may be covered with a heat-resistant ceramic backing member shaped in a specific form or with a heat-resistant particle layer and a copper member shaped in conformity with an intended size and shape of a penetration bead.

REFERENCES:
patent: 3221135 (1965-11-01), Maier, Jr.
patent: 3533153 (1970-10-01), Melill et al.
patent: 3736400 (1973-05-01), Spiegel et al.

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