Pipe welding apparatus

Metal fusion bonding – With means to handle work or product – Including means to rotate cylindrical work

Patent

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Details

228 45, 228119, 219 7614, B23K 904, B23K 3702

Patent

active

042158095

ABSTRACT:
The apparatus resurfaces the interior of a tubular pipe or other constant radius cylindrical structure by depositing a series of contiguous, coaxial weld beads on the surface of the structure. The apparatus comprises a chuck for holding and rotating the structure to be resurfaced while a weld head is positioned within a free end of the structure. Upon each 360 degree rotation of the structure, the weld head deposits a continuous circular bead on the structure surface and upon the completion of each bead, the head is moved a predetermined increment axially within the structure whereupon a further bead is drawn in a similar manner.

REFERENCES:
patent: 2295702 (1942-09-01), Wissler
patent: 2912562 (1959-11-01), Donovan
patent: 3254192 (1966-05-01), Braacht
patent: 3634648 (1972-01-01), Morris et al.

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