Press

Low cost welding accessories

Posted by Michaela Reay

06-Jun-2017

huntingdonfusion.com


Titanium, stainless steel and other corrosion resistant materials are used for tubing and pipework especially where there are highly corrosive materials flowing through them.

When such pipework is welded for joining or repairs, it is necessary to protect the material in and close to the weld joint, carried out by a technique called Weld Purging. Oxygen and nitrogen can be harmful to the weld joint in particular as they will combine very easily with the hot material, forming oxides and nitrides, until the temperature falls below its oxidation point.

One inexpensive accessory called a Weld Trailing Shield® can be added to a GTAW/TIG welding torch before beginning a pipe weld. This lightweight tool, designed and manufactured from Weld Purging Experts Huntingdon Fusion Techniques HFT®, is easily manoeuvred around the pipe joint as it is being welded, with no inconvenience to the welder.

The Trailing Shield® is connected to an argon gas source and when the weld is started, it has extra argon flooding to the sides of the weld and covering the heat affected zone adjacent to the weld. As the welding torch is moved forward, because of the length of the Trailing Shield®, the weld remains under an argon gas shield until the welded metal has cooled below its oxidation temperature.

For manual welding, the welder finds that with this lightweight and low cost tool, there is no difficulty in dragging it along the surface being welded. One further benefit is that it carries the welding torch at 90º to the weld. 

With automatic welding machines it is possible to raise the welding speed dramatically and enjoy the major benefits of automatic welding. Each Trailing Shield® is delivered with a variable diameter connector so that it can fit any size of TIG/GTAW/PAW welding torch for manual or mechanised welding.

Savings on expensive cleaning and pickling costs to remove oxidation and discolouration on these corrosion resistant materials pay for these shields in the first weld and the shields can be used for years without replacement.

Trailing Shields® are available immediately for any diameter of tube and pipe from 17 mm upwards. They are also manufactured in flat format for sheet metal welding.

Luke Keane, Distributor Support for HFT® said: “The Trailing Shield® is connected to the argon gas supply and it diffuses gas out evenly without turbulence through the multi layers of stainless steel mesh built into the body of the shield. At each side, removable silicone rubber side shields provide a barrier to prevent the argon escaping sideways and remaining over the weld metal. These silicon shields are a consumable and are replaceable as they become worn.”

YouTube Video available at: https://youtu.be/X6dHUIRh3Ow



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

weld trailing shieldsinert gas coveragehuntingdon fusionweld purgingback purging

More items from michaelareay


QuickPurge® Your Large Diameter Pipes for Perfect Welds

Purging large diameter pipework ready for welding can be expensive. Without restricting the volume, there is a high cost involved in inert gas used and time spent waiting for the oxygen level to reach a level low enough for welding to begin.  Weld Purging experts Huntingdon Fusion Techniques HFT® ...

Michaela Reay


Posted 5 days agoPress > huntingdon fusionquickpurgepipe purging +2

Secondary Inert Shielding Gas Application with Weld Trailing Shields

A secondary inert shielding gas application is often required when welding reactive metals such as titanium alloys and stainless steels, to protect the weld from oxidation until it has cooled to a safe temperature.  The low cost Argweld® Weld Trailing Shield® provides additional inert gas coverage ...

Michaela Reay


Posted 11 days agoPress > trailing shieldweld trailing shieldargweld +2

Safe Pipe Repair with Accu-Freeze™

Pipe freezing for temporary pipe isolation has now become the safest, quickest and most cost-effective method for pipeline leak testing, maintenance work or for making pipe repairs including valve and other control system replacements. It is still very common for maintenance workers to drain down ...

Michaela Reay


Posted 15 days agoPress > accu freezepipe freezingpipe repair +2

Pressure Testing Pipework up to 6 Psi with Inflatable Stoppers

Vessels such as pipelines, gas cylinders and fuel tanks are often pressure tested for strength and leaks. A range of standard and non-standard Inflatable Stoppers for tanks, chambers, tubes, pipes, pipework fabrications and ductwork is available from the Pipestoppers ® Division of Huntingdon Fusi ...

Michaela Reay


Posted 27 days agoPress > huntingdon fusionpipestopperspipe plugging +2

Low Cost Weld Purge Monitor for Welding Titanium

Weld Purging Techniques are now used in most industries especially when welding reactive metals. Whilst the welding torch provides a protective cover to the top of the fusion zone, inert gas coverage is also required at the weld root.  By sampling the gas and testing the oxygen content around the ...

Michaela Reay


Posted 1 month agoPress > purgeye nanoweld purgingback purging +3
All posts from michaelareay