B - Operations – Transporting – 23 – K
Patent
B - Operations, Transporting
23
K
78/64
B23K 37/04 (2006.01) B23K 37/053 (2006.01)
Patent
CA 1086103
METHOD AND APPARATUS FOR FABRICATING PIPE CENTRALIZER OR THE LIKE ABSTRACT OF THE DISCLOSURE 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 man- drels. 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.
305948
Chromalloy American Corporation
Gowling Lafleur Henderson Llp
LandOfFree
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