Argweld® Weld Backing Tape® is a specialised solution designed to provide optimal support for weld roots and ensure consistently smooth weld profiles. This innovative tape features a 75mm wide aluminium adhesive tape, complemented by a central 25mm wide fibre glass band that acts as the casting platform for the weld.
By employing Argweld® Weld Backing Tape®, welding speeds can be significantly enhanced, resulting in precise and immaculate welds that require minimal post-weld attention. Unlike Ceramic Fibre with its 1,800ºC melting point, HFT®’s Glass Fibre Weld Backing Tape® exhibits no true melting point, offering enhanced safety and reliability during TIG welding, where temperatures can soar up to 6,000ºC.
Argweld® Weld Backing Tape® proves invaluable for the one-sided welding of thin wall stainless steel sheet and vessels, offering a range of benefits. By attaching the backing tape to the backside of the weld, it provides crucial support to the weld pool while effectively containing the argon from the weld torch, eliminating the necessity for back purging. This method ensures a consistent, high-quality underbead profile, resulting in exceptional weld outcomes. Moreover, when purging large vessels, the remarkable cost and time savings achieved through reduced purge gas usage and elimination of waiting periods make the use of backing tape highly cost-effective and advantageous.
- Supports the weld pool and ensures a smooth, flat weld bead without icicles or drop-through, protecting the weld root from heavy oxidation.
- Enables one-sided welding, eliminating the need for double-sided welding.
- Eliminates the requirement for back gouging or back grinding processes.
- Traps argon or shield gas from the weld torch, creating a back purge effect and preventing heavy oxidation.
- Eliminates the need for back purging the entire vessel, while maintaining a consistent high-quality underbead profile.
- Compatible with various welding processes such as MIG, MMA, TIG, and plasma for joining different metals including stainless, duplex, chrome, and nickel steels.
- Increases production rate, reducing manufacturing costs through faster welding.
- Facilitates excellent side wall fusion, minimising weld defects.
- Reduces post-weld cleaning and grinding labour costs by preventing oxidation during heating and cooling phases.
- Provides substantial purge gas savings when welding large diameter pipes or vessels, as complete filling is unnecessary.
- Suitable for horizontal or vertical welding, resulting in successful outcomes with minimal re-welding or re-work.
- Maintains the original chemistry and metallurgy of the weld.
How To Use Argweld Aluminium Weld Backing Tape
|Argweld® Aluminium Weld Purge Tape™ only (without glass woven support).||51mm (2in)||45m (144ft)||N/A||ABT0003|
|Argweld® Low Amperage Weld Backing Tape® for use up to 80 amps.||76mm (3in)||25m (80ft)||25mm (1in) Light Weave||ABT0004|
|Argweld® Medium Amperage Weld Backing Tape® for use up to 160 amps.||76mm (3in)||12.5m (40ft)||25mm (1in) Medium Weave||APBH420|
|Argweld® Heavy Amperage Weld Backing Tape® for use up to 240 amps.||76mm (3in)||12.5m (40ft)||25mm (1in) Thick Weave||ABT0006|
|Argweld® SUPER Heavy Amperage Weld Backing Tape® for use up to 600 amps.||76mm (3in)||12.5m (40ft)||25mm (1in) Thick Weave||ABT0007|