Apparatus for removing a welding bulge from resistance...

B - Operations – Transporting – 21 – C

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29/1, 30/9

B21C 43/00 (2006.01) B23D 79/02 (2006.01)

Patent

CA 1106585

Apparatus for Removing a Welding Bulge from Resistance Welded Pipes Abstract A welding bulge removing apparatus comprises a U-shaped carrier adapted to be placed by means of rollers on the welded pipes at the weld zone. Mounted on the carrier are cutting tool holders movable to and from the weld bulge. The invention resides in that the welding bulge removing apparatus is provided with a motor-operated carriage having support rollers and a driving gear wheel and the carrier has an arcuate guideway and a toothed segment both mounted thereon and in engagement with the support rollers and the gear wheel respectively. Moreover, the carriage is adapted to be rigidly connected to a lifting mechanism of a vehicle used for raising and carrying the welding bulge removing ap- paratus, whereby in operation rotation of the carrier is effected, while the carriage remains immobilized. Such welding bulge removing apparatus permits a higher performance in removing a welding bulge from resistance welded pipes under field conditions while laying pipelines for the long-distance transportation of petroleum and gas.

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