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Achieve High Quality Welds with a Close Eye on your Weld Purge

weld purging, back purging, purging with argon, stainless steel welding, critical weldsWelding high quality joints in stainless, duplex and chrome steels as well as titanium, nickel alloys and zirconium may require oxygen levels to be as low as 10 ppm.

To measure oxygen accurately at such low levels for quality welding, the comprehensively updated PurgEye® 300 Plus is an ideal choice.

This model now includes the revolutionary PurgeNet™ facility, allowing connection of accessories such as an automatic welding machine interface and a long distance visual alarm system. In additional this gas analyzer indicates actual oxygen levels down to 1 ppm (accurate to 10 ppm) on a large alphanumeric OLED display, perfect for achieving oxide-free, zero colour welds repeatedly.

The PurgEye® 300 Plus is menu driven by four push buttons on the front and has an internal audible alarm so acceptable and unacceptable oxygen levels can be pre-set. A well-shielded, long-life oxygen sensor, inside the monitor, means there is very little maintenance requirement.

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Versatile, Lightweight Nylon Plugs for Weld Purging

orbital welding, weld purge plugs, weld purging, back purging, purge and weldRound hole blocking just became easy with Pipestoppers® Nylon Plugs, designed for hundreds of applications where holes need to be blocked.

The Pipestoppers® Division of Huntingdon Fusion Techniques HFT® manufacture a range of low cost, lightweight Nylon Plugs for a variety of applications where the hole sizes are 0.5 to 6” (12 to 150 mm) diameter.

Ron Sewell, Chairman for HFT® said: “Tube, pipe and tank welders can benefit from using these low cost Nylon Plugs. Manufactured with a hollow shaft, these plugs can be used for weld purging and blocking smaller diameter pipes and miscellaneous stubs.”

“A number of ready-made Kits are available, containing plugs ideally suited for the most popular size of pipes, all of which are available for immediate delivery.” 

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Improve Weld Quality with a low cost Trailing Shield®

weld trailing shields, inert gas coverage, back purging, weld purging The quality of welds on tubes, pipes and flat sheet metal can be dramatically improved with the addition of a low cost Weld Trailing Shield®.

Experts in Weld Purging, Huntingdon Fusion Techniques HFT® have designed and developed flat and radiused Trailing Shields® which 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.

Luke Keane, Technical Support for HFT® said: “These 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.”

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Versatile Inflatable Stoppers for Pipe Plugging and Stopping

pipe stopping, pipe plugging, debris stopping, pipestoppers, huntingdon fusion It is often necessary to quickly and easily stop the flow of gas or liquid in pipes, which is where low cost Cylindrical and Spherical Inflatable Stoppers are extremely attractive.

Designed and manufactured by the Pipestoppers® Division of Huntingdon Fusion Techniques HFT® Inflatable Stoppers can also help prevent the ingress of debris as well as other unwanted materials and animals.

Ron Sewell, Chairman for HFT® said: “Common applications for the Cylindrical and Spherical Range of Inflatable Stoppers include debris stopping, leak testing, plumbing operations and weld purging.”

Cylindrical Inflatable Stoppers will not ‘turn over’ inside a pipe when under pressure, because they are longer than their diameter. Spherical Stoppers are used where the position of the stoppers is not important, so can be placed at any angle to make a seal.”

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Improve Weld Quality with Precision Ground Tungsten Electrodes

tungsten cutter, bench mounted grinder, tungsten preparation, highest quality welding, dedicated tungsten electrode grinderImprove weld quality with precision ground Tungsten Electrodes using non-radiotoxic MultiStrikes® and The TEG-1000 Tungsten Electrode Grinder.

Back by popular demand, Huntingdon Fusion Techniques HFT® have re-initiated the manufacturing of the famous TEG-2 Tungsten Electrode Grinder, under the new name of TEG-1000.

Ron Sewell, Chairman for HFT® said: “Ensuring your Tungsten Electrodes are sharpened correctly can help to improve weld quality. Tungsten Electrode Grinders are a convenient, safer and more accurate way than other methods of grinding Tungsten Electrodes.”

“Grinding thoriated Tungsten Electrodes with open air belt and disc grinding tools for example can be extra hazardous not only for safety, but also for personal health. To overcome these conditions, whilst maintaining a very high life expectancy for the Tungsten Electrode we manufacture blue-tipped MultiStrike® Tungsten Electrodes that contain non-radioactive rare earth elements, eliminating the risk to health posed by red tipped radiotoxic thoriated Tungsten Electrodes.” 

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Read your Weld Purge from up to 1 km away with the PurgEye® 1000

purgeye, gas sniffer, oxygen monitor, weld purging, back purge monitorIt is not always practical when welding long tube lines or pipeline sections to measure the oxygen content in the purge gas close to the weld. Many welders face the challenge of the purge gas in the welding zone being contaminated when taking readings from a distance, leading to the risk of a failed weld that needs to be cut out and remade.

To overcome this problem, the PurgEye® 1000 is now available from Huntingdon Fusion Techniques HFT® that will display the oxygen level in the welding zone on a Weld Purge Monitor® screen that might be 10, 50 or even 1,000 metres away from the weld.

The PurgEye® 1000 comprises a sensing head that can be fitted onto any pipe weld purging system that transmits the oxygen level at the weld location electronically to a monitor, up to 1 km away.

Ron Sewell, Chairman for HFT® said: “The PurgEye® 1000’s sensing head can be fitted onto any Mechanical or Inflatable Tube and Pipe Weld Purging System from 1” (25 mm) diameter upwards. Therefore the oxygen level can be measured directly at the weld location. With this capability, the operator can be certain that the weld purge reading is correct and that the joint will not be adversely affected by oxidation.”

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HotPurge®, for Weld Purging Heat-Treated Chrome and High Strength Stainless Steel Pipework

pre heated welding, post heated welding, hot purge, pipe purging, tube and pipe weld purgingThe majority of structural applications are manufactured from high-strength steel, such as offshore structures, buildings and shipbuilding. It is therefore important that the steel joint is pre-heated prior to welding and then receives a post-weld heat treatment.

It is also vital that they welds are free from oxidation, however with the high temperatures and length of time at such temperatures, most weld purging systems are unsuitable.

The innovative HotPurge® Pipe Purging System has been developed by Huntingdon Fusion Techniques HFT for Heat-Treated Chrome and High Strength Stainless Steel Pipe Joints where the temperatures might be as high as 760ºC (1,400ºF) for many hours.

Georgia Gascoyne, CEO for HFT® said: “HotPurge® ensures the purge space remains tightly sealed at all times as the inflatable dams maintain an even seal throughout the weld cycle, irrespective of pressure rises or excessive flow rates of argon gas. The large central collar dramatically reduces the space to be purged and makes it easier to reach lower oxygen levels faster than with conventional purging systems.”

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Inflatable Rubber Plugs: Lightweight but Strong and Highly Resistant to Petrochemicals

rubber plugs, inflatable plugs, pipe stopping, pipe blockingIt has long been possible to seal sections of a pipe using an Inflatable Stopper. However there are applications where existing stoppers aren’t quite good enough for the job in hand.

Now, thanks to the new Range of Inflatable Rubber Plugs from the Pipestoppers® Division at Huntingdon Fusion Techniques HFT®, a whole new number of applications can be attended to.

These new Plugs can be inflated quickly using compressed air lines and are ideal for fast, reliable and safe stopping and blocking of pipes, joints, channels, inlets and a number of other uses.

Lightweight Inflatable Rubber Plugs can withstand temperatures from -40°C (-40°F) to 70°C (158°F) and are highly resistant to oils, hydrocarbons and petrochemicals. Available in sizes 2 - 78” (51 to 1,981 mm), each Plug has a wide degree of flexibility in diameter. 

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Successful Titanium Welding with Flexible Welding Enclosures®

welding chamber, titanium welding, inert gas welding, additive manufacturingIt is often necessary to weld titanium or nickel alloy parts in an oxygen free environment especially within the Aerospace and Additive Manufacturing Industries.

In order to achieve oxide-free welds, it is important that the welding zone is purged of oxygen to a level as low as 10 parts per million (ppm). Flexible Welding Enclosures® manufactured by Huntingdon Fusion Techniques HFT® are an ideal, low cost, very successful solution.

Luke Keane, Technical Support for HFT® said: “Our 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.”

“Special Flexible Welding Enclosures® 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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PurgElite® for Zero Colour Tube and Pipe Welds

purgelite, tube and pipe purging, weld purging, huntingdon fusion, pruge bladdeWelders can spend hours filling entire tubes and pipes with an expensive inert gas in order to achieve oxide free, zero colour stainless steel welds.

After more than 40 years of innovation, design and manufacturing expertise in the field of tube and pipe weld purging, Huntingdon Fusion Techniques HFT® has introduced PurgElite®, a range of low cost Tube and Pipe Purging Systems to achieve a clean, oxide free, zero colour weld in just minutes.

Ron Sewell, Chairman for HFT® said: “To save welders the expense of completely filling tubes and pipes with an inert gas, PurgElite® Systems are available, manufactured to suit pipe diameters from 1” to 24” (25 to 600 mm). They are designed with a robust inflatable bag on either side of a spinal tube that is used for inflation. They inflate and seal in the pipe, restricting the volume that is needed to be purged, to just 250 mm either side of the weld joint.”

The special spinal tube is resistant to hot metal up to 300ºC (572ºF) and is super flexible to allow movement of the PurgElite® Systems around 180º bends if necessary. These spinal tubes are made of a low outgassing rate material, so there is no risk of weld contamination.

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Accurate Stainless and Titanium Weld Purging with the PurgEye® 200

weld purge monitor, titanium welding, oxygen monitor, handy purgeQuality Weld Purging is essential when welding metals such as stainless steel, zirconium, nickel alloys and titanium. The area around the weld must be purged of oxygen to as low as 50 parts per million (ppm) before, during and after welding to ensure all joints are metallurgically sound and oxide-free.

To remain at the forefront of Weld Purging Technology, Huntingdon Fusion Techniques HFT® have launched the updated hand-held PurgEye® 200 Weld Purge Monitor®, now with PurgeNet™.

Ron Sewell, Chairman for HFT® said: “The correct use of a Weld Purge Monitor®, designed and calibrated specifically for weld purging, will ensure that all welds remain free from oxidation and metallurgical imperfections.”

“The PurgEye® 200 is designed and manufactured with the HFT® revolutionary PurgeNet™, allowing networking to a range of accessories. Typically, one accessory allows direct interface to an Orbital Welder or any other automatic welding machine, so that the oxygen level in the vicinity of the weld can be monitored and the welding machine can be switched on or off according to pre-set oxygen levels. A second accessory is an audible and visual warning device that will signal externally when oxygen levels are lower and higher than pre-set levels.” 

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Low Cost Nylon Weld Purge Plugs™

orbital welding, nylon plugs, weld purging, weld purge plugs, back purge plugsIt is important when welding stainless steel and titanium tube and pipe joints to produce zero colour, oxide-free welds both on the inside and outside, although it is not always easy to weld purge stubs, elbows and tees.

For welding nickel alloy, titanium and stainless steel tubes and pipes, including stubs, elbows and tees, Huntingdon Fusion Techniques HFT® have designed and developed clinically clean, white nylon Weld Purge Plugs™, providing a great barrier for weld purging.

Luke Keane, Technical Support for HFT® said: “Where complicated pipework systems have to be filled with inert gas, Weld Purge Plugs™ are a perfect product to seal all holes and orifices for quality internal weld purging. They can also be used for weld purging small or odd diameter pipes where conventional inline pipe purging systems may not be practical.” 

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