Home > HFT dramatically reducing weld purging times with new quick purge systems

HFT dramatically reducing weld purging times with new quick purge systems

Editorial
article image QuickPurge weld purging system

QuickPurge from leading weld purging specialist Huntingdon Fusion Techniques is a new quick purge system designed to significantly reduce weld purging times as well as material waste during welding processes.

Welders, supervisors and quality control personnel are often kept waiting for stainless steel or titanium pipes to be purged of oxygen ready for welding. This also results in expensive inert argon gas flowing away to waste after it has passed through the pipe, gathering oxygen and other harmful gases along the way.

The new QuickPurge tube, pipe and pipeline weld purging systems are designed to prevent this loss of time and material in pipes of all sizes. QuickPurge dramatically reduces waiting times to such an extent that it pays for itself in less than a single weld.

Huntingdon Fusion Techniques (HFT) was recently contacted by the welding manager at a leading pipe work fabrication unit who was tasked with reducing costs and waiting time in the department while meeting the technical demands of their Plasma/ TIG (PAW/GTAW) welding process.

Following the consultation, HFT’s specialists prepared their demonstration equipment for a welding trial on 36” (900mm) pipes. The purge was completed in just a few minutes instead of the hours taken previously, with the special heat protective covers fitted around the volume-reducing sleeve absorbing the extra heat of the plasma arc.

After several tests during which multiple welds were made successfully with different sizes of pipe, the customer was convinced of HFT’s QuickPurge solution.

An additional gas input line in the QuickPurge system allows extra purge gas to be introduced for similar applications, thereby achieving a much faster purge down to the lowest oxygen levels, which is perfect for larger diameter pipes where quality welds are required. The extra cold gas mitigates the extra heat produced by the Plasma/ TIG process.

The advanced design of the QuickPurge system means that oxygen levels as low as 10 parts per million (ppm) can be reached every time, allowing zero colour welds to be achieved with no loss of corrosion resistance caused by oxidation.

Using IntaCal combined with the integrated PurgeGate device allows the systems to be safely inflated with argon gas for purging the space between the dams where the weld joint is located. PurgeGate also prevents the possibility of burst dams in the event of undue pressure increase or accidental flow increase of the purging gas.

All QuickPurge systems are manufactured as standard with a hose for connecting a weld purge monitor, which can read oxygen levels down to as low as 10 ppm. QuickPurge is constructed of materials that are resistant to the higher weld temperatures present and don't outgas, preventing weld contamination.

HFT also manufactures the HotPurge range for a higher and longer temperature exposure for pre-heated chrome steel and high strength stainless steel pipe joints.

The QuickPurge weld purging system is available from Huntingdon Fusion Techniques’ worldwide Exclusive Distributor network.

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