Argweld backing tape

Argweld backing tape

Argweld backing tape

To save time and money in the welding of large diameter tubes, pipes, vessels and flat sheet made from thin wall stainless or alloy steels, two new grades of backing tape have been launched.

The Argweld backing tapes comprise a 75mm wide strip or neat resistant adhesive aluminium foil, down the centre of which is a 25mm wide band of woven glass fibre cloth (see Plate 4). A lightweight grade for welding up to 80 Amps comes in 25 metre lengths and the heavy duty version suits welding up to 160 Amps and is available in 12.5 metre rolls.

Plate 4 Argweld backing tape

By affixing the adhesive tape to the inside of joints to be welded, the weld zone is completely and effectively blocked off. Single sided TIG or plasma welding can then be undertaken from the outside, with the shield gas from the welding torch providing perfect gas coverage to the root of the weld.

Advantages of backing tape usage include savings of considerable expense in purging the insides of large volume pipes and tanks, savings in waiting time for purging, elimination of costly back-gouging and double sided welding techniques and reduction in weld defect.

Further information can be obtained from: Huntingdon Fusion Techniques Limited, Stukeley Meadows, Huntingdon, Cambs PE18 6EJ. Tel: +44 (0)1480 412432; Fax: +44 (0)1480 412841; E-mail: hft.ltd@dial.pipex.com; http://www.huntingdonfusion.com