News

Weld Backing Tape™ for Weld Purging

15W-WeldBackingTapeIt is important when welding metals such as stainless steel, titanium and zirconium that the welding zone is purged of oxygen even to as low as 10 parts per million (ppm) before, during and immediately after welding, in order to achieve a clean, oxide free, zero colour weld.

Recently an exciting discovery was made concerning the use of Argweld® Backing Tape™ available in Italy from Andit Automazione.

One customer showed how the use of his former ceramic backing tiles and the tiny space available for the weld root formation, prevented adequate argon flow and caused the welding arc to blow back at the welder.

Massimo from Andit said: "Ceramic backing tiles are designed for Submerged Arc Welding where oxidation is prevented by powder as opposed to argon, so the customers were using the wrong product for GTAW / TIG welding.

 

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Weld Purging Company Provides First Class Service

24W-InflatableStoppersWhen Seabank, a major Power Station in Bristol, UK ordered weld purging equipment from a company in Germany which failed to arrive, the downtime started to cost the Power Station a lot of money and had their welders waiting around on site with nothing to do.

Huntingdon Fusion Techniques HFT®’s Exclusive Distributor, West Country Welding were contacted and due to HFT®’s stock levels and great first class service, the new weld purging products were delivered to the site within three hours of the initial telephone call.

Bob Reakes for West Country Welding said: “The shutdown at Seabank Power Station in Avonmouth meant the welders were stood around waiting, wasting valuable time and money. The weld purging equipment ordered from a company in Germany never showed. Thanks to Huntingdon Fusion Techniques HFT®’s stock levels, they got the welders up and running quickly.”

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No Disruption to Pipe Repair with Accu-Freeze™

15W-Accu-Freeze-Pipe-Freezing-SystemsPublic buildings, factories, manufacturing plants, power stations, hotels, sports facilities, stadiums, apartment blocks and all commercial constructions may have pipework systems such as sprinkler systems for example, that are full of water or other fluid that need to be completely drained for the smallest of repair.

Such drainage costs time, money: with respect to the product that is lost and delays and costs related to bring the system back online. Now the repair can be done in-situ with the Accu-Freeze™ System, which will work on pipes up to 12” diameter and freeze most products that may be in the pipe.

Accu-Freeze™ Pipe Freezing System, available in Europe from Huntingdon Fusion Techniques HFT®, makes it possible to create an ice plug either side of the repair zone to allow work to be carried out without draining the whole system.

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Nylon Plugs for Maintenance Work

16W-PipestoppersNylonPlugsBlocking pipes in order to carry out routine maintenance, repair work, leak testing or even for weld purging is easy with Pipestoppers® Nylon Plugs.

The Pipestoppers® Division of Huntingdon Fusion Techniques HFT® manufacture these low cost, light weight Nylon Plugs for a variety of applications from 0.5 to 6” (12 to 150 mm).

Ron Sewell, Chairman for HFT® said: “Our Nylon Plugs service a variety of industries including domestic and industrial plumbers and swimming pool and spas maintenance personnel.

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Oil and Gas Pipes Welded Faster

07W-QuickPurgePipeWeldPurgeSystemTime is money and waiting for pipe joints to be purged ready for welding within the Oil and Gas Industry can take anything up to four hours, depending on the diameter of the pipe being welding and the method chosen for purging.

Huntingdon Fusion Techniques, HFT®‘s innovative QuickPurge® System dramatically reduces waiting times, producing zero colour welds and no loss of corrosion resistance caused by oxidation.

Ron Sewell, Chairman for HFT® said: “A 36” diameter stainless steel pipe for example can be purged down to 100 parts per million (ppm) of oxygen in under 32 minutes. Compare this with purging using foam dams that will outgas heavily into the weld zone and will take hours, not a few minutes.

High speed pipe purging system QuickPurge® is leading the way in the field of purging tube, pipe and pipeline joints over 6” diameter, where oxygen levels are required to be as low as 10 (ppm) or less.”

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Significant Increase to Your Weld Purge Monitor’s Sensor Life

S26C-PurgEye100-IP65-Sensor-Packs-with-TopsIt is vital during the welding of stainless steel, titanium and nickel alloy to monitor the oxygen level at the weld root to ensure non-oxidised, zero colour welds are achieved. The long life and accuracy of the oxygen sensor within the Weld Purge Monitor® is critical to the continuous achievement of such welds.

Replacement sensors for Huntingdon Fusion Techniques HFT®’s market leading PurgEye® 100 Weld Purge Monitor® are now delivered in a unique sealed package. These sensors are kept sealed in an inert environment until they are opened for use. As a result, the lifespan of each sensor is raised significantly.

The low cost PurgEye® 100 Weld Purge Monitor® is a unique IP65 rated oxygen monitor, which reads from atmospheric level, down to 100 parts per million (ppm), ensuring high quality welds are achieved repeatedly.

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Major Petrochemical Company uses Flexible Welding Enclosure®

04W-FlexibleWeldingEnclosuresDuring the construction of a jetty, for the import of liquid natural gas (LNG) in Ecuador, Bechtel, the largest construction and civil engineering company in the USA, had a number of small stainless steel socket welds to complete.

In the climate conditions there and with the small size of the welds, it was difficult to assure a good all round weld purge to avoid oxidation and the attendant metallurgical defects that might follow.

The solution was to purchase Flexible Welding Enclosure® from Huntingdon Fusion Techniques HFT®, World Leading Weld Purging Experts.

Ron Sewell, Chairman for Huntingdon Fusion Techniques HFT® said: “With LNG pipework handling cryogenic gas at such low temperature, the propensity for cracking of welds is quite prominent and with socket welds already being a crack propagator if not set up correctly, it was wise to ensure that the welds were purged correctly.

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Smallest Ever Weld Trailing Shield®

54W-WeldTrailingShieldsWhen welding titanium using the GTAW / TIG process, the gas shield from the welding torch needs extending for protection from oxidation and for productivity. Although welders will use a larger than normal gas cup to provide a big surface area of protection, this still limits the speed at which they can move the welding torch.

To provide additional surface protection and in order to weld faster, Huntingdon Fusion Techniques HFT® manufacture a range of Weld Trailing Shields®, effectively long gas cups fixed onto and dragged along behind the welding torch, which ensures the weld remains under an argon gas shield until the metal has cooled below its oxidation temperature.

Ron Sewell, Chairman for HFT® said: “Professionally manufactured Weld Trailing Shields® are usually around 100 – 150 mm long as standard, with specials for automatic welding being as long as 450 mm (17”), although many applications require smaller Weld Trailing Shields®.

 

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When the temperature rises, protect your Weld Purging System with new Heat Resistant Covers

Argweld-Heat-Resistant-Covers-PHO-01WWeld Purging is essential when welding metal tubes and pipes made from stainless steel, titanium and zirconium, in order to achieve non-oxidised, zero colour welds.

Damaging or bursting the inflatable dams on your Tube and Pipe Weld Purging System due to exposure to high temperatures can be a thing of the past now with Argweld® Heat Resistant Covers available from Huntingdon Fusion Techniques HFT®.

Luke Keane, Distributor Support for HFT® said: “As we manufacture the HotPurge® System from 6” upwards, to be used for heated pipework up to 760ºC, we decided to make a much lower cost option for companies who were only concerned about overheating the unprotected dams on our PurgElite® and PurgExtra® Systems.

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Increase Weld Purge Monitor® Sensor Life Significantly

PurgEye-API100-PHO-S06WThe PurgEye® 100 Weld Purge Monitor® has a unique sensor, which measures the precise oxygen level being drawn across it.

A sensor is provided with the PurgEye® 100 and replacement sensors are available in their sealed packages.

You may have noticed that your replacement PurgEye® 100 sensors are being shipped in new packaging. The packaging is a way to increase the sensor life significantly.

The sensors are packaged inside a small, sealed compartment to prevent oxygen from entering, keeping it inert until the package is opened for use. Once a tiny amount of oxygen inside the sealed volume has been consumed, a partial vacuum has been created leaving the residual atmospheric nitrogen behind that protects the sensor.

The new packing of the PurgEye® 100 sensors ensures the average life is raised dramatically.

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We Have The Key to Your Perfect Weld Purge

05W-PurgEye600-WeldPurgeMonitorA unique Weld Purge Monitor® has been designed and developed that reads from atmospheric level of oxygen (20.94%), down to one part per million (0.0001%), breaking all technological boundaries in one instrument.

Huntingdon Fusion Techniques HFT® continues to grow its innovation of Weld Purge Monitors® / oxygen analysers that were first invented and manufactured by the company over 40 years ago.

CEO for HFT®, Georgia Gascoyne said: “The PurgEye® 600 incorporates the features and benefits of all the other Weld Purge Monitor® designs in the HFT® Family Range, but for the first time, this one instrument has a full range of measurement reading from atmospheric concentration (20.94%), down to 1 ppm, accurate to 10 ppm. Readings are indicated either as parts per million or in percentage.”

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PurgExtra® Tube and Pipe Purging System

08W-PurgExtra-PipeWeldPurgeSystemWeld purging is essential when welding metal tubes and pipes made from titanium, ultra high purity stainless steel joints and just as important when welding those less critical stainless steel and copper nickel pipe joints, in order to achieve non-oxidised, zero colour welds.

PurgExtra® is the latest weld purging product released by Huntingdon Fusion Techniques HFT® for the purging of tube and pipe joints from 1 – 24” ø. This range complements the PurgElite® series, but has extra purge gas inlets and corresponding exhaust ports.

Luke Keane, Distributor Support for HFT® said: “The PurgExtra® System allows the operator to purge at recommended rates initially and then when it would be an advantage, to introduce additional purge gas to create the desired results. Typical applications are for extra inert gas with titanium welds to achieve the lower oxygen levels required for welding that material, which would be around 20 parts per million.

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