Multiple welding head system for fabricating pipe

Details Multiple welding head system for fabricating pipe Multiple welding head system for fabricating pipe

1977-02-09

1979-03-13

Smith, Al Lawrence

Metal fusion bonding

With means to deform work, filler, or flux portion before...

Comprising means forming one-piece blank into a tubular shape

228 26, 219 60R, 219 616, B23K 900, B23K 3702, B23K 3106

Patent

active

041438019

ABSTRACT:
A pipe is fabricated from rolls of flat metal plate by continuously moving the plate into a pipe-forming station which shapes the flat plate into a pipe having a longitudinal seam therealong. A plate arc welding machine welds consecutive plates to each other thereby maintaining continuity of plate movement. Equal sections of the longitudinal seam are consecutively welded in a leapfrogging manner using two welding units movably positioned on the opposite sides of the moving pipe. The welding units alternatingly weld alternate and overlapping sections of the longitudinal seam. The welding operations are carried out without interference with the continuous movement of the pipe.

REFERENCES:
patent: 1801140 (1931-04-01), Chapman
patent: 2679817 (1954-06-01), Grabner
patent: 3075484 (1963-01-01), Benteler

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