Remote Weld Purge Monitoring


For long distance weld purge monitoring, the PurgEye® 1000 enables operators to read the weld purge gas level from a distance for the first time. The exposure to oxygen during the welding process on alloys such as stainless steel will result in discolouration and can severely reduce corrosion resistance properties. It is therefore crucial that the oxygen level is monitored throughout the welding process and kept to a desired level.

However, is often difficult for welding personnel to get an accurate reading of the oxygen level at the welding zone when welding lengths of tube and pipework of 20 metres length and more.

Huntingdon Fusion Techniques HFT®, a Weld Purging Products Manufacturer, has created the PurgEye® 1000 Weld Purge Monitor®, enabling operators to read the weld purge gas level from a distance for the first time.

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Eliminate Porosity During Welding with a Dew Point Sensor


Innovators in Weld Purging Huntingdon Fusion Techniques HFT® have recently developed a Dew Point Sensor, an important predication instrument of when water will form on metal surfaces in the welding environment.The presence of moisture on the joint surface can create porosity in the weld metal. It is therefore important that the dew point is monitored so that welders are made aware when moisture is likely to be present.

Innovators in Weld Purging Huntingdon Fusion Techniques HFT® have recently developed the PurgeNet™ Dew Point Purging Gas Moisture Sensor™, an important predication instrument of when water will form on metal surfaces in the welding environment.

Ron Sewell, Chairman for HFT® said: “Under arc conditions, water is broken down into hydrogen and oxygen in atomic form which, when present in weld metal, cause porosity and are known to create cracking in the weld joint. Water can form as moisture on metal surfaces while welding, so it is crucial to be able to measure ‘Dew Point” while welding lengthy critical joints as conditions can change during the welding process.”

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Pipe Purging with Water-Soluble Weld Purge Film®


To keep purging costs down, Weld Purging Experts, Huntingdon Fusion Techniques HFT® have designed and developed Weld Purge Film®, a water-soluble polyvinyl acetate purging barrier for a variety of pipe sizes. When it comes to pipe purging, it is not desirable, nor cost effective to simply pour inert gas into the pipe assembly in the hope that a good purge is achieved. A tough, leak tight purging barrier is required.

To keep purging costs down, Weld Purging Experts, Huntingdon Fusion Techniques HFT® have designed and developed Weld Purge Film®, a water-soluble polyvinyl acetate purging barrier for a variety of pipe sizes.

Luke Keane, Technical Sales Manager for Huntingdon Fusion Techniques HFT® said: “It is so easy to cut a circle of water-soluble film and place it a short distance away from the root gap before welding, pasting in place with the Argweld® Water Soluble Super Adhesive® to ensure a tough leak tight barrier, keeping the purging volume to the barest minimum. Argweld® Weld Purge Film® offers users the opportunity to make significant economies by minimising gas usage and cutting down dramatically on time taken to make a purge, whilst at the same time, achieving a desirably low oxygen level.”

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Reliable Oxygen Monitor for Titanium Welding in Aerospace Applications


The innovative PurgEye® Desk, a new monitor designed and manufactured by weld purging experts Huntingdon Fusion Techniques HFT®, is leading the way in inert gas weld purging technology by reading oxygen levels from 1,000 ppm, right down to levels as low as 1ppm Prior to welding of titanium, widely practiced in the aerospace Industry, the oxygen content of the purge gas must be reduced to a level below 50 ppm.

Engine components such as discs, blades, shafts and casings, from the front fan to the rear of the engine, and fasteners, airframe components and landing gear are all examples where titanium is used. Further examples are fuel tanks for satellites and military jets. Components such as wing spars have also been made recently out of titanium using the Wire Arc Additive Manufacturing (WAAM) process.

The innovative PurgEye® Desk, a new monitor designed and manufactured by weld purging experts Huntingdon Fusion Techniques HFT®, is leading the way in inert gas weld purging technology by reading oxygen levels from 1,000 ppm, right down to levels as low as 1ppm (highly accurate to 10 ppm), ensuring welders achieve perfect oxide free, zero colour welds time and time again.

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Easy Valve Replacement with CO2 Pipe Freezing


Qwik-Freezer™ is the industry standard portable CO2 Pipe Freezing System, in use around the World, covering pipe diameters from 3/8” – 8” (9 – 200 mmThe Pipestoppers® Division at Huntingdon Fusion Techniques HFT® provides a cost saving solution to carrying out repairs or modifications on pipes with liquid inside, which also includes valve replacement.

Replacing valves in pipework can be a challenge, especially when the pipelines have liquids running through them. One option is to completely drain the system to make the repairs, which can prove costly, time consuming and problematical as to where to drain the liquid.

Georgia Gascoyne, CEO for HFT® said: “Qwik-Freezer™ is the industry standard portable CO2 Pipe Freezing System, in use around the World, covering pipe diameters from 3/8” – 8” (9 – 200 mm). The quick and easy to use system requires very little set-up time and is the only CO2 Pipe Freezing System capable of freezing larger pipe diameters.”

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Improve Weld Purging Quality with the PurgEye® 600


The PurgEye® 600 Weld Purge Monitor® reads from atmospheric level of oxygen (20.94%), down to one part per million (0.0001%).With the ever-increasing activities in such industries as the Nuclear, Oil and Gas and Engineering, there is a large volume of stainless steel, zirconium and titanium pipework that will need to be welded to a very high standard.

An effective Weld Purge Monitor® present, in conjunction with weld purging equipment when making joints will ensure engineers have an accurate oxygen reading before, during and after the welding cycle.

Huntingdon Fusion Techniques HFT® manufacture a unique, stylish, all singing and dancing Weld Purge Monitor®, the PurgEye® 600, which reads from atmospheric level of oxygen (20.94%), down to one part per million (0.0001%).

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Heavy-Duty Pipe Stopping with Steel Plugs


Steel Test Plugs can be used for low pressure testing and plugging pipes, pipelines and pipework fabrications and other orifices between 2 and 48” (50 to 1,200 mm) diameter. Heavy-duty leak testing, sealing, pipe blocking and stopping is easy with Steel Plugs from the Pipestoppers®.

Steel Test Plugs can be used for low pressure testing and plugging pipes, pipelines and pipework fabrications and other orifices between 2 and 48” (50 to 1,200 mm) diameter.

Luke Keane, Technical Sales Manager for HFT®’s Pipestoppers® Division said: “Plugging challenges are a thing of the past with our Steel Plugs range. They provide a strong, leak-free seal with each plug having a long life span.”

“Where plugs might be required to work close to the top of their pressure range and to hold seals longer than would be the case with single plugs, we also manufacture Double Steel Plugs, which increases the capability of the plug.”

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Perfectly Ground Tungsten Electrodes


TEG-1000 Tungsten Electrode Grinder with a diamond wheel, resulting in clean and smooth finishes, with no splintering and eliminating arc jumpingWhen it comes to TIG welding, Tungsten Electrodes are the most important part of the application. A properly ground Tungsten Electrode will help to improve arc starting and stability, giving an overall better performance.

Huntingdon Fusion Techniques HFT® manufactured the TEG-1000 Tungsten Electrode Grinder with a diamond wheel, resulting in clean and smooth finishes, with no splintering and eliminating arc jumping.

Ron Sewell, Chairman for HFT® said: “Grinding Tungsten Electrodes with a dedicated Tungsten Electrode Grinder will help produce a stable arc, which then provides greater tungsten life. Grinding Tungsten Electrodes incorrectly may result in the tip being dropped into the weld pool, which may lead to weld cut-out or rejection.”

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Weld Purging with Preheat


Inflatable Pipe Purging System for use with High Strength Steel Pipe Joints where pre-and post-weld heating temperatures might be as high as 300ºC (572ºF) for lengthy periods. In the power generation and nuclear industry, low and medium alloy steels such as SA 213 T91 and SA 335 P91 are chosen for their high strength, but are often prone to cracking during welding. Pre-heating and post-heating reduces the crack sensitivity.

In order to meet the requirements of inert gas purging when temperatures exceed 200ºC (392ºF). The use of purge systems capable of withstanding such high temperatures for lengthy periods is necessary

HotPurge® has been developed by International Weld Purging Specialists Huntingdon Fusion Techniques HFT®. It is an Inflatable Pipe Purging System for use with High Strength Steel Pipe Joints where pre-and post-weld heating temperatures might be as high as 300ºC (572ºF) for lengthy periods.

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Easy Pipe Welding


Weld Purge Dams from Huntingdon Fusion Techniques HFT® offer a great, lightweight solution where access is difficult, are easy to inflate and heat resistant up to 80oC (176oF). Typically for closure welds, tight bends, T piece joints and dome end connections where a conventional Tandem Weld Purging System cannot be used, a range of low cost, single ended Inflatable Weld Purge Dams is available for pipe diameters from 6 to 88 inches (150 mm up to 2,235 mm).

Weld Purge Dams from Huntingdon Fusion Techniques HFT® offer a great, lightweight solution where access is difficult, are easy to inflate and heat resistant up to 80oC (176oF).

Ron Sewell, Chairman at Huntingdon Fusion Techniques HFT® said: “Even today, many companies are still allowing their technicians to spend many hours fabricating dams made of foam, cardboard, adhesive tape, wood and so on. Like paper, these materials contain a high percentage of water, which is very undesirable to have in the presence of a weld.

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Replace Ceramic Backing Tape for Supported Weld Roots


Replace Ceramic Backing Tape for Supported Weld RootsCeramic Backing Tape is often used to help support weld roots. However, with a melting point of 1,800ºC, concerns grow during TIG welding, where temperatures can reach up to 6,000ºC.

Leaders in Weld Purging Technology, Huntingdon Fusion Techniques HFT® manufacture a range of Weld Backing Tape®, with no true melting point, helping to support weld roots and prevent ‘sugaring’ or ‘grapes’.

Luke Keane®, Technical Sales Manager for Huntingdon Fusion Techniques HFT® said: “Achieving clean welds is easy with Argweld® Weld Backing Tape® available up to 600 amps. Weld Backing Tape® with help protect and support the backside or under side of the joint during welding.”

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Weld Purge Oxygen Monitor


The PurgEye 100 Weld Purge Monitor accurately reads down to 100 ppm, perfect for welding stainless steelWeld Purging is the act of removing oxygen from the vicinity of a weld, before, during and after welding reactive metals by displacing the oxygen with an inert gas (usually argon).

When welding stainless steel, the oxygen level must be reduced to a required minimum, which is less than 100 ppm.

The most effective way to know the oxygen level is to measure it with a Weld Purge Monitor®. Leading the way in Weld Purging Monitoring Technology, Huntingdon Fusion Techniques HFT®’s PurgEye® 100 is perfect for obtaining oxide free welds in stainless steel, reading accurately from atmospheric oxygen level (20.94%), right down to 100 ppm (0.01%).

Ron Sewell, Chairman for HFT® said: “It is important not to use alternative low cost oxygen analyzers or other oxygen safety monitors as they are calibrated under ambient conditions and therefore unsuitable for measuring purge levels down to 0.01% as our Award Winning PurgEye® 100 does.”

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