Argweld Weld Backing Tape™, is used specifically for supporting weld roots and to provide very even weld root profiles. The Weld Backing Tape™ comprises a 75 mm wide aluminium adhesive tape that has a 25 mm wide fibre glass band in the centre onto which the weld can be cast. Welding speeds can be dramatically increased with the help of Argweld® Weld Backing Tape™. The resulting weld is neat, clean and requires minimal post weld attention.
Typically for the welding of thin wall stainless steel sheet and vessels from one side only, the backing tape can be attached to the backside of the weld, to support the weld pool, keep the argon from the weld torch surrounding the weld pool and eliminating the need to back purge, while giving a consistent high quality under bead profile. With Argweld® Weld Backing Tape™, it is now possible to make welds from one side only, where double sided welding used to be applied. This eliminates the need for expensive weld preparations and the need for back gouging. Because weld roots are flat and clean when using Argweld® Weld Backing Tape™, post weld dressing and cleaning costs are dramatically reduced.
Using Argweld® Weld Backing Tape™ will significantly reduce linear and circumferential seam welding costs, as it allows faster welding speeds and greater production rates while producing smooth profile and flat, clean weld under beads. For purging large vessels, the tremendous savings of purge gas and waiting time pays for the use of the backing tape many times over. The cost of Argweld® Weld Backing Tape™ is paid for on each weld and additional cost savings are achieved through increased welding speed and reduced weld cleaning. Where large volumes are filled with expensive inert gas to prevent oxidised welds, the use of Argweld® Weld Backing Tape™ allows welders to complete the work quickly without the cost of inert gas and lengthy waiting times for purging.
Argweld® Weld Backing Tape™ and Argweld Weld Purge Tape™ are available for immediate delivery.
Argweld® Weld Backing Tape™ is a glass fibre weld backing system for supporting the weld pool, casting a smooth, flat weld bead free of icicles or drop through. This protects the weld root from the formation of heavy oxidation.
By using the Argweld® Weld Backing Tape™, no back gouging or back grinding process will be required. The Argweld® Weld Backing Tape™ will trap the argon or other shield gas from the weld torch to hold the gas surrounding the weldpool, effectively providing a back purge facility and keeping the weld free from heavy oxidation. In the case of vessels, tanks, containers etc, Argweld® Weld Backing Tape™eliminates the need to back purge the whole vessel, while giving a consistent high quality underbead profile.
Using Argweld® Weld Backing Tape™, it is possible to weld with MIG, (GMAW), MMA (GMAW), TIG (GTAW) or plasma (PAW) processes for the joining of all metals including stainless, duplex, chrome and nickel steels.
With Argweld® Weld Backing Tape™ welds can be made faster, thereby increasing production rate and reducing manufacturing costs. The support of the molten weld pool allows excellent side wall fusion thus helping to eliminate weld defects. Post-weld cleaning and grinding labour costs are dramatically reduced because oxidation is prevented by the enclosure of the weld during its heating and cooling phases.
In cases of welding large diameter pipes or vessels, there will be a massive purge gas savings by using backing tape instead of filling complete pipes or vessels.
Argweld® Weld Backing Tape™ can be used for horizontal or vertical welding and results are so successful that there is rarely need for re-welding or re-work.
Using Argweld® Weld Backing Tape™ will not change the chemistry or metallurgy of the weld.
The Argweld® Weld Backing Tape™ can be used for welding sheet, plate, pipes, vessels, tanks, silos, heat exchangers, cryogenic, pressure and vacuum vessels and hundreds of other applications made from metals such as:
• Carbon steels
• Stainless steels
• Duplex steels
• Chrome steels
• Copper nickel
• Cast iron
• Nickel and cobalt alloys
Industries using Argweld® Weld Backing Tape™ include large pipework, sheet and plate fabricators as well as shipbuilding, ship repair, heating, cooling, HVAC, agricultural machinery, food, dairy, breweries pharmaceutical, petrochemical, and many others.
Argweld® Weld Backing Tape™ is available in three grades:
Low Current Grade 80 amps (ABT0004)
1.5 mm (1/16″) thick fibre glass band.
Typically for welding up to 80 amps with TIG/GTAW.
Will weld materials up to 1.6 mm (1/16″) thick.
Tungsten electrode diameter of 1.6 mm (1/16″).
Welding speed of 600 mm/min (24″/min).
Supplied in rolls of 25 metres (80″) length.
Medium Current Grade 160 amps (ABT0005)
2.5 mm (1/10″) thick fibre glass band.
Typically for welding up to 160 amps with TIG/GTAW.
Will weld materials up to 6 mm (1/4″) thick.
Tungsten Electrode diameter of 1.6 or 2.4 mm (1/16th or 3/32″).
Welding speed of 500 mm/min (20″/min).
Supplied in rolls of 12.5 metres (40″) length.
High Current Grade 240 amps (ABT0006)
3 mm (1/8″) thick fibre glass band.
Typically for welding up to 240 amps with TIG/GTAW.
Will weld materials up to 10 mm (1/2″) thick.
Tungsten Electrode diameter of 2.4 mm or 3.2 mm (3/32″ or 1/8″).
Welding speed of 450 mm/min (18″/min).
Supplied in rolls of 12.5 metres (40″) length.