Weld Purging Accessories available at a Low Cost

Weld Purging Accessories are designed to help welders achieve oxide free welds in Chrome-Steels, stainless steels, titanium, zirconium and magnesium every time, regardless of budget.

Weld Purging Experts, Huntingdon Fusion Techniques HFT® recognise the need for consistent, high quality welds and therefore design and manufacture a Range of low cost Weld Purging Accessories for all applications and budgets.

– Weld Purge Film®

Weld Purge Film® Kits can be used on pipe diameters up to 900 mm (36”) and for temperatures up to 300ºC (572ºF) without the material burning or coming loose and losing the weld purge.

The water-soluble Weld Purge Film® allows dams to be cut easily with the safety knife provided and once they are fixed into position using the water-soluble Weld Purge Super Adhesive® provided, produce an impenetrable purge barrier that can easily be washed away during hydrostatic testing of the pipe or just by normal wash-out.

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– Weld Backing Tape™

Weld Backing Tape™ is a common material used where manual welding cannot control the weld root profile sufficiently, or when an automatic weld process is unable to reach optimum speeds while still obtaining satisfactory underbeads.

Ceramic Fibre is in use within the Welding Community, which has a melting point of 1,800ºC, causing concern when temperatures during TIG welding can reach up to 6,000ºC. A superior alternative to such material is Glass Fibre, which has no true melting point.

HFT Glass Fibre Backing Tape supports and protects the weld root from oxidation. It will trap the inert gas from the weld torch to hold the gas surrounding the weld pool, effectively providing a back purge facility, available in four grades of Weld Backing Tape™ for use up to 80, 160, 240 or 600 Amps.

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– Weld Trailing Shields®

Trailing Shields® are low cost Weld Purging Accessories and simply attach onto any TIG/GTAW, PAW/Plasma and MIG/GMAW welding torch, providing an additional inert gas coverage during the seam welding of stainless steel, duplexes, titanium and any other reactive metal where discolouration or oxidation needs to be eliminated.

The lightweight, easy to use Trailing Shields® pay for themselves in just one weld! They are perfect for manual welders, as well as automatic machines by helping to cover the weld with an inert gas coverage during and after welding, producing bright, shiny, oxide free welds time and time again and eliminating the expensive post weld cleaning process.

The Trailing Shield® is connected to the argon gas supply, diffusing gas evenly without turbulence through the multi layers of stainless steel mesh built into the body of the shield. At each side, replaceable silicone rubber side shields provide a barrier to prevent the argon escaping sideways and remaining over the weld metal. As the welding torch is moved forward, the weld remains under an argon gas shield until the welded metal has cooled below its oxidation temperature.

Argweld® Trailing Shields are available in flat format for straight line welding as well as in curved format for any diameter of pipe or vessel from ½” (12mm) upwards.

As well as external models, there are curved models for the insides of pipes and tanks.

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– Flexible Welding Enclosures®

Reliable exclusion of reactive gases in the welding environment is guaranteed when using a low cost Flexible Welding Enclosure®, together with a Weld Purge Monitor® designed and manufactured from Weld Purging Experts Huntingdon Fusion Techniques HFT®, to achieve and show oxygen levels as low as 10 parts per million (ppm).

Standard and specially made Enclosures are available for a fraction of the cost of a rigid welding chamber, providing a technically viable option to the very expensive metal chambers and purge boxes. They can be designed and manufactured to suit any purpose. We’ve recently manufactured systems for complete robot manufacturing cells and for GTAW (TIG) as well as laser additive manufacturing applications.

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Contact us for more information on our low cost Weld Purging Accessories.

If you would like additional information on this topic, or if you'd like To Understand Weld Purging & to Obtain Clean Weld Roots, contact Huntingdon Fusion Techniques, We'll Provide the Answers

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