Method and apparatus for fabricating pipe centralizer or the lik

Details Method and apparatus for fabricating pipe centralizer or the lik Method and apparatus for fabricating pipe centralizer or the lik

1977-06-22

1979-01-09

Smith, Al Lawrence

Metal fusion bonding

Including means to force or clamp work portions together...

Work portion comprises electrical component

228 49, 228182, 228212, B23K 3704

Patent

active

041334701

ABSTRACT:
A method and apparatus for fabricating pipe centralizers or the like including supporting the centralizer end collars upon a pair of axially aligned spaced apart mandrels, supporting the bows of the centralizers circumferentially about the end collars, simultaneously welding each end of one of the bows to each collar, rotating the mandrels with the collars and bows supported thereon about the axes thereof, and simultaneously welding each end of another of the bows to the collars. The mandrels include a pair of collar clamps for retaining each collar against a collar shoulder, and a plurality of pivotally mounted arms for holding the bows in contact with the collar. At least one of the mandrels is movable axially relative to the other so that centralizers of different lengths may be fabricated, and so that completed centralizers may be removed from the mandrels. The welding is accomplished by a pair of welding heads supported adjacent the mandrels and movable radially and axially relative to the mandrels to perform fillet welds along the edges of the bows.

REFERENCES:
patent: 2799085 (1957-07-01), Baker et al.
patent: 3634648 (1972-01-01), Morris et al.
patent: 3970232 (1976-07-01), Melton
patent: 4014495 (1977-03-01), Oda et al.

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