Weld Backing Tape brings solution to a common challenge

04 February 2019

Huntingdon Fusion Technique’s® (HFT) Argweld® Weld Backing Tape is the solution to the common challenge that welders often face, where high-quality stainless steel, duplex, and chrome steel welds are required, but where the use of purge gas is not always possible.

The Weld Backing Tape, made from high temperature-resistant glass fibre, supports weld roots and eliminates the creation of slag, while removing contact with air and dramatically reducing the amount of oxidation.

The tape has no true melting point, so it works when temperatures reach up to 6,000°C during tungsten inert gas (TIG) or metal inert gas (MIG) welding. This overcomes concerns associated with ceramic fibre versions that have a melting point of 1,800°C.

The glass fibre matting has differing thicknesses to match the welding current in use, and once the tape has been positioned under the centre of the weld joint, the welders can start their arc. The welding torch argon flow has plenty of space to move between the pores of the matting, which allows the welding arc to stabilise and start forming the weld root.

Image courtesy of Huntingdon Fusion Techniques®