Job is welding 2 tubes together each already having a longitudinal weld. When using rotators with sub arc to deposit the joining circumferencial weld, we're finding that the 2 longitudinal welds (one in each tube), cause uneven weld metal depostion due to the cap of the welds riding over the roller wheels. Must be an easy answer but this Welding Engineer doesn't know it. Help.
ROTFLMFAOAAA!!! :) :) :) "Must be an easy answer but this Welding Engineer doesn't know it." Too friggin funny Mike!!! :) :) :) Must be one of those Ohio State Grads!!! :) :) :)
cheap answer is to grind the welds flush at the area (or if that is not possible) tack on a ring of the same Diameter. Or chuch off the ID as mentioned. i'm not sure what type of positioner you're using but our is a chuch so we would just chuck around the welds and have no drive wheels touching the pipe.
The expensive answer is to use a AVC an automatic voltage control so that standoff height is adjusted on the fly to be uniform on the part. That's how we do it with Semi auto gtaw where torch stand off distance is very critical.
ROTFLMFAOAAA!!! :) :) :) "Must be an easy answer but this Welding Engineer doesn't know it." Too friggin funny Mike!!! :) :) :) 
Forum
