TUBE-TO-TUBESHEET WELD HEADS
MODELS 424, 425, 430
Tube-to-tubesheet weld Heads are specifically configured for fast and simple operation. The Head is inserted into the tube to be welded, and the operator pushes the START WELD switch. Multiple torch positioning adjustments allow virtually all tubesheet joint designs to be welded. All four models weld a wide range of tube sizes and operate in any position.For welds requiring filler wire addition, the wire feeder is mounted on the weld Head and uses a standard wire spool. This feeder provides precise and positive wire feeding, not possible with floor-mounted feeders.
These tube-to-tubesheet weld Heads bring the productivity and repetitive precision of machine welding to the fabrication and repair of steam generators and heat exchangers.
Tube Geometries:
Model 424 is ideal for all tubesheet geometries
Model 425 with AVC is for multipass welding
Model 430 is ideal for fusion welds, flush geometry
Process:
GTAW
weld Head Type:
Open arc.
Pipe Size Range:
Model 424: 10mm - 78mm (0.4" - 3.07") OD
Model 425: 10mm - 140.2mm (0.4" - 5.52") OD
Model 430: 10mm - 26mm (0.4" - 1.02") OD
Functions:
- Torch rotation
- Filler wire feed (Models 424, 425 only)
- Arc length control (Model 425 only)
Features:
- Water-cooled torch and weld Head body (Model 425 only) allow use on pre-heated tubesheets
- Lifting eye allows use on a counterbalance for weightless operation
- Multiple torch angle and wire feed positioning mechanism allow optimum torch position and wire entry angle
- Simple centering cartridge design allows quick installation without requiring prior installation of expensive custom-fabricated locating fixtures
- Inexpensive centering cartridges fit the exact tube ID
- Filler wire spool rotates with the torch - eliminating wire entry problems common with floor- mounted feeders (Models 424, and 425)
- No cable wrap-up
Download Tube-to-Tubesheet PDF
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