Electric heating – Metal heating – By arc
Patent
1987-06-17
1989-06-20
Walberg, Teresa J.
Electric heating
Metal heating
By arc
219 761, 21912511, B23K 1132
Patent
active
048411230
ABSTRACT:
An automated welding device for applying a weld overlay to a preexisting weld at the saddle-shaped juncture between a horizontal header pipe and a vertical riser pipe includes a track mountable to the header and adapted to receive a carriage for orbital movement thereon. The carriage is self-propelled and includes a guide means for engaging a flat surface of the track to maintain the carriage in the desired orientation. A welding torch can be mounted to the carriage for movement toward and away from the surface of the pipe and for movement back and forth across the width of the preexisting weld. The track can be oriented to permit the welding torch to follow a predetermined path in more than one orthogonal plane.
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Hy-Tek Systems, Inc. drawing no. D-13-2002-C, "Round-Track", dated Oct. 25, 1983.
Hy-Tek Systems, Inc. drawing No. D-13-1000-B, "Assembly: Carriage Sweep-o-let", dated Jul. 30, 1983.
Hy-Tek Systems, Inc. drawing No. D-13'1000-(4), "Explosion--Dwg", dated Oct. 9, 1984.
Hy-Tek Systems, Inc. drawing No. D-13-1000-B, Sheet:2, "Assembly--Drive Carriage--Sweep-o-let", dated Aug. 15, 1983.
Burkhalter, Stephen, "Innovative Welding Helps Ease BWR Pipe-Crack Problems," Power magazine, Apr. 1985.
Fox, Novak, and Riccardella, "Structural Reinforcement of Recirculation Manifold to Riser Sweepolet Welds by Weld Overlay--Analysis and Application", delivered to the Seminar on Countermeasures for BWR Pipe Cracking, Nov. 15-18, 1983.
Fleiss Hartmut W.
Novak Frank
Walberg Teresa J.
Welding Services, Inc.
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