Press

Safer pipe Weld Purging for closing welds

Posted by Michaela Reay

15-Feb-2017

huntingdonfusion.com


Weld Purging a variety of pipes of different diameters can prove complex and costly, particularly when having to fill whole pipework systems with expensive argon gas. One solution that welders have traditionally devised has been to construct homemade foam or paper dams that are placed either side of the weld, constricting the purge volume to make weld purging times shorter.

Homemade foam or paper purge dams have severe technical limitations that can lead to loss of welds when they leak or slip from position thus flooding the welding zone with oxygen.

To overcome these challenges Weld Purging Experts Huntingdon Fusion Techniques HFT® have designed and developed Argweld® Weld Purge Film® Kits to make weld purging affordable and successful.

Georgia Gascoyne, CEO for HFT® said: “Using our low cost Weld Purge Film® Kits can save welders both time and money, ensuring oxide-free welds are achieved time and time again.”

“This 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.”

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 and losing the weld purge.

These low cost Kits will save operators high costs by minimising gas usage and dramatically reducing the time taken to make a purge. Weld Purge Film® Kits have been designed and developed by HFT®, containing product accessories needed to manufacture dams that will not come loose during welding.

The technical advantages of using water-soluble film instead of other materials include:
-       The total transparency of the film dams, allows the welder to see the weld root as it is being laid.
-       Vapour pressure of the film is very low and does not outgas harmful elements during welding that can mix with the hot metal and cause metallurgical defects.
-       The Argweld® Film does not contain water like paper and sponge products do.

After welding, the water-soluble film is simply washed away during the standard hydrotest cycle or by flushing of the pipe interior and dissolved down to molecular level, leaving no trace.

Huntingdon Fusion Techniques HFT® have a worldwide Exclusive Distributor network, which can be found at www.huntingdonfusion.com.

Weld Purge Film® Video is available on YouTube at: https://youtu.be/SbR5W18bzVU


Visit source site

huntingdonfusion.com

weldingweld purgingweld purge filmhuntingdon fusionhuntingdon fusion techniques

More items from michaelareay


Handy Purge Monitor, now with PurgeNet™

To remain at the forefront of Weld Purging technology, World leading Weld Purging Experts and inventors of the Weld Purge Monitor®, Huntingdon Fusion Techniques HFT® have launched the updated hand-held PurgEye® 200 Weld Purge Monitor®, now with PurgeNet™. When welding metals such as stainless stee ...

Michaela Reay


Posted 6 days agoPress > weld purgingweld purge monitoroxygen reader +2

Keeping Tube and Pipe Joints Clean when Welding

It is important when welding stainless steel and titanium tube and pipe joints to be able to have zero colour, oxide-free welds both on the inside and outside. To achieve the conditions for zero colour, or oxide-free weld joints, it is necessary to remove the air around the joint to a level where ...

Michaela Reay


Posted 12 days agoPress > weld purgingweld trailing shieldstube and pipe purging system +2

Low Cost one-way Valve for specific flow rate and pressure

This low cost accessory has been designed and constructed to pass a maximum of 7.5 litres/min and 0.5 bar pressure. Other versions of 1bar and above are also available. Designated “PurgeGate®”, this nifty, hi-tech item has applications in both fluid and gas control. Its small size and low weight m ...

Michaela Reay


Posted 20 days agoPress > purgegateinflatable pipe purgingpipe purging +2

Remote Monitoring of Weld Purge up to 1 km away

When welding lengths of tube and pipework fabrications, as well as sections of pipelines of 20 metres length and more, one problem operators face is not receiving a fast and true weld purge reading from the purge zone. Now, for the first time, Huntingdon Fusion Techniques HFT® makes it possible to ...

Michaela Reay


Posted 26 days agoPress > weld purgingweld purge monitoroxygen monitor +2

New Tungsten Electrode Grinder

Ensuring your Tungsten Electrode is sharpened correctly can help to improve weld quality. Tungsten Electrode Grinders are a convenient, safer and accurate way than other methods of grinding Tungsten Electrodes. Back by popular demand, Huntingdon Fusion Techniques HFT® have re-initiated the manufac ...

Michaela Reay


Posted 1 month agoPress > thoriated tungsten electrodestungsten electrodemultistrike +2
All posts from michaelareay