The Vertical Narrow Lap Welder was developed to accommodate the coil joining requirements of “heavy gauge” galvanizing lines. Its wide range of capability provides a versatility that allows it to be applied in most mill lines that process thick and thin strips. The joint obtained meets the specifications of Narrow Lap Welding where a joint thickness of less than the sum of the two thickness being welded is needed, while retaining a joint strength equal to or better than the annealed parent strip.
If a thinner joint is required, Taylor-Winfield’s patented double pass Prep/Lap welding technique can be adapted. This technique produces a joint having a final thickness nearly the same as the parent material thickness.
Vertical Narrow Lap FEATURES
Less than double the parent metal thickness
- Vertical design allows for the shear to open upward and downward allowing the C-frame welding carriage to pass through the shear opening while welding.
- Extra heavy design provides the maximum in rigidity to minimize component deflections
- Joint characteristic is very acceptable for most processing lines
- Welder can also be equipped to weld and planish using one pass of the carriage.
- Full array of options are available
- Rugged “O” frame configuration.
- Durable “Oil Bath” welding heads with quick-change weld wheel feature.
- High precision pneumatic or hydraulic dual resquaring shear with four sided cutting blades.
- Pneumatic or hydraulic entry and exit clamps with quick change clamp liners.
- Urethane clamp inserts to prevent strip slippage and separation.
- Precision linear motion control of welding carriage.
- Automatic scrap removal.
- AC, DC and MFDC weld current available.
- Automatic weld parameter set-up with “Upper Level” computer communication.
- Low-voltage or edge sensor weld initiation to prevent strip edge and weld wheel damage.
- Constant current weld control for consistently high weld quality.
- Various PLC’s available – GE Fanuc, Siemens, Rockwell Automation (Allen Bradley).
- “Upper Level” computer communication via Profibus, Ethernet, or TCP/IP protocol.
- Matrix or algorithmic weld parameter adjustment control.
- Automatic centering guides
- Automatic strip cross alignment
- Closed loop water chillers
- Notchers for trimming strip edges
- Weld quality “bulge” tester
- Weld temperature monitoring
- Weld wheel dresser