Metal fusion bonding – Including applicator movable during fusion – Orbital or plane curvilinear motion
Patent
1980-11-28
1983-02-08
Godici, Nicholas P.
Metal fusion bonding
Including applicator movable during fusion
Orbital or plane curvilinear motion
219 60A, B23K 900
Patent
active
043724744
ABSTRACT:
A pipe clamping structure is arranged to clamp an in-place pipe to be welded. A welding mechanism in turn is coupled to the pipe clamping structure for rigid guided movement in directions parallel to itself towards and away from the clamping structure in an axial direction along the pipe. The welding mechanism in turn supports a horseshoe-shaped weld head support rotor which receives the pipe in the horseshoe opening and is arranged to rotate about the pipe axis. A torch head is carried on the horseshoe rotor so that a 360.degree. weld can be achieved and simultaneously, the welding mechanism can be oscillated back and forth by the rigid guidance and alignment coupling with the clamp structure. In addition, the torch head is held on a link plate to the rotor, the link plate being swingable to vary the arc gap and thus provide appropriate voltage control. The overall dimensions of the welding apparatus as measured in an axial direction are not greater than twice the diameter of the largest size pipe which can be accommodated so that in-place welding can take place in relatively awkward situations in a completely automatic manner.
REFERENCES:
patent: 3235912 (1973-05-01), Nikolaev et al.
patent: 3840170 (1974-10-01), Arikawa et al.
patent: 4144992 (1979-03-01), Omae et al.
patent: 4145593 (1979-03-01), Merrick et al.
patent: 4213555 (1980-07-01), Minkiewicz et al.
Dimetrics Inc.
Godici Nicholas P.
Jordan M.
Pastoriza Ralph B.
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