Improve Weld Root Profiles!

Extending the HFT® range of products, we manufacture Argweld® Weld Backing Tape®, 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.

HFT®’s Glass Fibre Weld Backing Tape® has no true melting point, unlike Ceramic Fibre, which has a melting point of 1,800ºC, causing concern when temperatures during TIG welding can reach up to 6,000ºC.

weld backing tape, back purging, weld purge, weld purging techniques

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 eliminate the need to back purge, while giving a consistent high quality underbead profile.

For purging large vessels, the tremendous savings of purge gas and waiting time pays for the use of the backing tape many times over.


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