Press

Purge with Extra Options

Posted by Michaela Reay

28-Feb-2017

huntingdonfusion.com


Weld purging is the act of removing oxygen from the vicinity of a joint with an inert gas. It is essential when welding metal tubes and pipes made from titanium, stainless steel, chrome and nickel steels where a high strength joint or an exceptionally clean and smooth joint is needed. For example in power piping and ultra high purity stainless steel joints it is important to have a good weld purge that will provide non-oxidised, zero colour welds. 

PurgExtra® Inflatable Tube and Pipe Purging Systems, available from Weld Purging Experts Huntingdon Fusion Techniques HFT®, provides an extra gas purge for weld purging tube and pipe joints from 1 – 24” ø. This range complements the PurgElite® Series that has a single purging inlet.

Luke Keane, Distributor Support for HFT® said: “The PurgExtra® System allows the operator to purge at the recommended rates initially and then, when conditions are correct, to introduce the additional gas at high flow rates. This system is especially valuable for achieving the lower oxygen levels required for welding materials around 20 parts per million.”

When welding joints where interpass temperature control is necessary, PurgExtra® allows extra argon gas into the welding zone, helping to cool the area dramatically.  The extra gas also helps to remove the gases that are expelled by the outgassing, which occurs as the metal is being heated. The extra gas flow will prevent these expelled gases from combining with the hot metal and oxidising, which would cause the metal to discolour and lose its corrosion resistance.

PurgExtra® comprises of two inflatable dams connected by a heat resistant, highly flexible gas hose that has the unique IntaCal® gas release system. IntaCal® allows the dams to be inflated correctly and then releases the inert gas to safely purge the space between the dams. The low profile IntaCal® Valve replaces the old fashioned, bulky complicated valves, which are still used by other types of purging devices.

The highly flexible spinal hose between the dams allows the PurgExtra® Systems to be pulled or pushed easily around bends and elbows. In the centre of the spinal hose a strip of RootGlo® material is adhered, allowing the welder to see from outside clearly, when the PurgExtra® System has reached the correct position in the pipe. RootGlo® can be charged by exposing it to daylight for 10 minutes, after which it will provide up to 24 hours of bright illumination inside the pipe.

The innovative PurgeGate® Valve may be fitted to the PurgExtra® Systems as an accessory, to protect the inflatable dams from bursting due to accidental over pressurisation.

Heat Resistant Covers are also available for PurgExtra®, which fit onto the inflatable dams and allow operation with pre-heated and post-weld heat-treated pipe joints where the temperatures might reach 760°C.

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



New service from OilVoice
Trip Shepherd is for companies who need to track their staff in areas of risk.
It's free to use, so we invite you to try it.

Visit source site

huntingdonfusion.com

weldingweld purgingback purgeback purgingpurge weldingpurgextrahuntingdon fusionhuntingdon fusion techniques

More items from michaelareay


Eliminate the Thoria and Maintain the High Performance with Blue-Tipped MultiStrike® Tungsten Electrodes

Thoria, found in thoriated Tungsten Electrodes is a radio-toxic compound and emits mainly alpha particles, which are harmful if released inside the digestive tract or inside the lungs where they act as a carcinogen. Thoriated Tungsten Electrodes therefore pose a risk to welders during grinding.  W ...

Michaela Reay


Posted 5 days agoPress > huntingdon fusionmultistrikethoriated tungsten electrodes +2

Welding Enclosures for Titanium Parts

Welding titanium alloys often has to be carried out in an environment where oxygen can be eliminated throughout the welding cycle. If the parts were to come into contact with oxygen ay any point, the reactive metal can become contaminated, oxidising which can lead to reductions in corrosion resistan ...

Michaela Reay


Posted 11 days agoPress > flexible welding enclosurewelding enclosureweld purging +2

Oxygen Monitor for Field Welding

Welding under site conditions introduces problems that are not found in normal factory environments. Exposure to heat and cold, sand and dust, damp and wet atmospheres place demands on standard Weld Purge Monitors® for which they are not designed to meet The PurgEye® Site, available from Weld Purg ...

Michaela Reay


Posted 19 days agoPress > purgeyeweld purgingpipe purging +1

Purging Large Stainless Steel Pipes

Restricting the volume when welding large stainless steel tube and pipes can save huge amounts of time and inert gas costs. Previously, welders have spent many hours waiting for oxygen levels to be low enough to start welding.  Leading the way in Weld Purging Innovation and Technology, Huntingdon ...

Michaela Reay


Posted 1 month agoPress > huntingdon fusionquickpurgerapidpurge +2

Liquid Nitrogen Pipe Freezing

Pipe freezing is a simple and efficient way of sealing a pipe or system while pipe repairs or general pipework maintenance is carried out, without the need to drain the system. Accu-Freeze™ Pipe Freezing Systems are available from the Pipestoppers® Division of Huntingdon Fusion Techniques HFT®. A ...

Michaela Reay


Posted 1 month agoPress > pipe freezingpipe repairshuntingdon fusion +2
All posts from michaelareay