Structure of metal container having trunk pipe and branch pipe,

Details Structure of metal container having trunk pipe and branch pipe, Structure of metal container having trunk pipe and branch pipe,

1991-09-17

1995-08-22

Evans, Geoffrey S.

Electric heating

Metal heating

By arc

219 61, 21912169, 21912511, 285286, B23K 2600, B23K 902

Patent

active

054442060

ABSTRACT:
A method for manufacturing a welded metal container by first arc welding a branch pipe to a trunk pipe. The arc welding of the pipes together causes both of the pipes to be thermally deformed. The end surfaces of the pipes are then cut by a laser cutting or mechanical cutting process so that the ends of the trunk pipe are in parallel and perpendicular to the end of the branch pipe. Subsequently flanges are laser welded to the ends of the pipes without further thermally deforming the pipes. The metal container made by this process can be used as a sheath for a gas insulated switch gear.

REFERENCES:
patent: 2272698 (1942-02-01), Garrett et al.
patent: 3251122 (1966-05-01), Boteler
patent: 3870288 (1975-03-01), McLarnon
patent: 3882299 (1975-05-01), Sciaky
patent: 4177371 (1979-12-01), Honig
patent: 4504729 (1985-03-01), Asano
patent: 4566623 (1986-01-01), Dufft
patent: 4659903 (1987-04-01), Berne et al.

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