« BACK  

Zero colour oxide free welds for manual welders

Two special flat models with one standard flat model
Two special flat models with one standard flat model

Titanium, stainless steel and other corrosion resistant materials need to be shielded with an inert gas while welding takes place, in order to protect the molten weld pool from combining with oxygen and nitrogen from the surrounding air. Without this protection, welds will oxidise and can form metallurgical defects that may cause weld joint failure.

TIG (GTAW) and Plasma (PAW) welding torches are fitted with gas cups, through which inert gas flows and protects the molten weld metal around the arc, however as the weld torch travels further along the weld seam, the welded metal is still hot enough to oxidise as it is exposed to air. In most cases the oxidation has to be removed to reduce the risk of weld failure. This removal costs time and money for labour hours and materials.

In order to eliminate the air from combining with the remaining hot metal, it is possible to fit a trailing shield to the welding torch.

One company that manufactures such devices is Huntingdon Fusion Techniques Limited (HFT) and after more than 40 years of experience, they have developed a complete range of shields that cover most welding geometries of the above named materials.

  • Lightweight radiused models cover all diameters of pipes and cylindrical vessels.
  • Flat models suit sheet metal or other flat applications.
  • An internally radiused model is available for those welders that have to weld inside a large diameter pipe or chamber.
  • Larger shields with greater width and length to accommodated the higher heat input and faster speed of automatic welding.

Shields for manual welding are small and light in weight and easily fit onto TIG/GTAW of Plasma/PAW manual welding torches.

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 a cold 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 with the shield following the torch along the surface being welded. One further benefit is that it carries the welding torch at 90° to the weld.

The HFT Argweld® range of trailing shields have a series of variable mesh layers integrated into the body that provide a smooth laminar gas flow into the protected area to prevent any air being drawn in from outside.

In addition, they have replaceable flexible silicone strip side walls to prevent entry of air while moving alongside the weld joint.

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.

PUBLISHED: 06 Dec 17 Bookmark and Share
Company:
Huntingdon Fusion Techniques Limited
Visit Huntingdon Fusion Techniques Limiteds website
Country:
UK
Tel:
+44 1554 836 836
Fax:
+44 1554 836 837
Email:
marketing@huntingdonfusion.com
Website:
www.huntingdonfusion.com
Other News from Huntingdon Fusion Techniques Limited:

»
No risk of lost welds with Weld Purge Film®
»
Heavy-duty leak testing, sealing and stopping with Pipestoppers®
»
Low cost Weld Purge Monitor® for stainless steel welding
»
Weld Purge Dams for dished ends and short pipes
»
Bright, shiny, oxide-free welds with PurgExtra®
»
Inert gas welding monitor
»
Freeze it and make your pipe repair easy with Accu-Freeze™
»
Weld Backing Tape® saves grinding time and costs
»
Construction site Weld Purge Monitor®
»
Zero colour oxide free welds for manual welders
»
Tig (GTAW) welders need certainty with their welding equipment
»
New tungsten electrode grinder
»
Flexible Welding Enclosures® for Additive Manufacturing
»
Power piping perfectly purged
»
Low cost 1 PPM Weld Purge Monitor®
»
Double Freezing technique for large diameter valve replacement
»
Inflatable Stoppers for petrochemical applications
»
Highest quality welds made with lower costs
»
Handy Purge Monitor, now with PurgeNet™
»
Keeping tube and pipe joints clean when welding
»
Low cost one-way valve for specific flow rate and pressure
»
Remote monitoring of weld purge up to 1 km away
»
New Tungsten Electrode Grinder
»
Introducing PurgeNet™ and accessories
»
Weld Purging for closing welds
»
Low cost Weld Purge Monitor®
»
Effective pipe plugging in heavy-duty applications, with Aluminium Plugs
»
Accessories for Inflatable Weld Purging Systems
»
Closure welds made easy!
»
Leak testing, debris stopping and weld purging with Pipestoppers®
»
Safer and more efficient welding with MultiStrike®
»
Inflatable pipe purging systems for zero colour welds
»
Block pipes instantly and effectively with Low Profile Stoppers
»
Low cost welding accessories
»
Keep an 'Eye' on your critical welds
»
Improve weld root profiles with Backing Tape®
»
Health and safety sectors benefits from disruption-free Pipe Repair with Accu-Freeze™
»
Food and beverage industry tubes and pipes benefit from better welds
»
On-site Weld Purge Monitor® for the Petrochemical Industry
»
Weld Purging of pipes for the oil and gas industry
»
Weld Purge Monitor® for the Nuclear Industry
»
Fire sprinkler systems - Easy valve replacement with Qwik-Freezer™
»
Flexible Welding Enclosure® for welding titanium and nickel alloy
»
On-site Weld Purge Monitor® with PurgeNet™
»
Low cost 1 PPM Weld Purge Monitor® designed for the Process Industries
»
Leak tight pipe plugging for the oil & gas industry
»
Weld purge your heat treated pipes confidently with HotPurge®
»
Purge with extra options
»
World Standard Weld Purge Monitor®
»
Safer pipe Weld Purging for closing welds
»
Successful gas tungsten arc welding with MultiStrike®
»
Rapid purge your pipes with QuickPurge®
»
New Weld Purge Monitor® with PurgeNet™
»
Single ended Purge Dams
»
Safer welding with MultiStrike®
»
Flexible Welding Enclosure® for welding down to 10 ppm
»
Keep a low cost 'eye' on your weld purge
»
QuickPurge® your pipes for perfect welds
»
We have the key to your perfect weld purge
»
Welding of vacuum tubing and piping
»
No lost purge during welding
»
Pipe plugging and blocking of all shapes and sizes with Pipestoppers®
»
Launch of new Weld Purge Monitors® at Fabtech 2016
»
Indian success with weld purging of titanium alloy pipe
»
Weld purge your pipes the "Elite" way
»
Switch to MultiStrike® for an improved and safer Tungsten Electrode performance
»
Fast purging of heat-treated pipework
»
Freeze sealing for pipe repairs with Qwik-Freezer™
»
Introducing super heavy duty Weld Backing Tape™
»
Pipe Welding becomes easier
»
Extended inert gas coverage during titanium and stainless steel welding
»
Inflatable Stoppers for pipe plugging and blocking
»
Measure your Argon for the best Weld Quality
»
Weld Purge your pipes at a low cost with Weld Purge Film®
»
Dramatically reduce Weld Purging times with QuickPurge®
»
Switch to MultiStrike® for an improved Tungsten Electrode performance
»
Flexible Welding Enclosures® for zero colour titanium welds
»
Weld purge your pipes the 'Elite' way
»
Monitor your Weld Purge at a low cost
»
Weld Backing Tape™ for weld purging
»
Weld purging company provides first class service
»
No disruption to pipe repair with Accu-Freeze™
»
Nylon Plugs for maintenance work
»
Pipes welded faster
»
Significant increase to your Weld Purge Monitor's sensor life
»
Major petrochemical company uses Flexible Welding Enclosure®
»
Smallest ever Weld Trailing Shield®
»
When the temperature rises, protect your Weld Purging System with new Heat Resistant Covers
»
We have the key to your perfect weld purge
»
PurgExtra® tube and pipe purging system
»
Keep a distant 'Eye' on your Purge
»
Ensure your Weld Purging System doesn't burst
»
Block pipes instantly and effectively with Pipestoppers®
»
Welding World Award Winner
»
Fast purging of heat-treated pipework
»
For your PurgEyes® only
»
Purge your tube and pipes the Elite way
»
Flexible Welding Enclosures®, ultra low cost welding chambers
»
Use Backing Tape™ for perfect weld underbeads
»
Bright, oxide free welds with Trailing Shields®
»
Nylon Weld Purge Plugs for weld Purging
»
Keep an Eye on your Weld Purge
»
The use of water soluble Weld Purge Film™ for pipe purging
»
Freeze sealing for pipe repairs with Qwik-Freezer™
»
Argon Hose for your Weld Purging System
»
Do not put your welds at risk
»
Out with the old and in with the new
»
Inflatable Stoppers come in many shapes, sizes and material
»
QuickPurge® your pipes for perfect welds
»
Keep your Eye on the Purge
»
Freeze sealing for pipe repairs with Accu-Freeze®
»
Flexible Welding Enclosures® - ideal for the welding of titanium and zirconium
»
Bright, clean, high quality welds with Trailing Shields®
»
PurgExtra™ tube and pipe purging system
»
Keep a distant 'Eye' on your Purge
»
Freeze sealing for pipe repairs with Qwik-Freezer®
»
Mechanical pipe sealing plugs
»
PurgElite® inflatable tube and pipe weld purging system
»
We have the key to your perfect weld
»
The use of Weld Purge Film® for Pipe Purging
»
MultiStrike® Tungsten Electrodes offer safer, cheaper TIG welding
»
Ensure your Weld Purging System doesn't overinflate by using a PurgeGate® Valve
»
Inflatable Pipestoppers, where access to the job site is difficult
»
Weld Purging provides the cleanest, highest quality and lowest cost welds ever!
»
QuickPurge® high speed pipe purging system
»
Weld Purge Dams
»
Flexible enclosure welding
»
PurgExtra™ pipe weld purging system
»
HFT white paper: Remote Weld Purge Monitoring
»
Upgraded high speed pipe purging system
»
Pipe sealing plugs and stoppers
»
Low cost pipe weld purging system (for purging hot sections)
»
Keeping it clean with Argweld® Flexible Weld Purging Enclosures®
»
Largest inflatable Pipe Welding Purge System ever
»
Weld Purge Monitor® Family gets new addition
»
HotPurge™ pipe purging systems for pre-heated pipe welding
»
Return on Investment QuickPurge®II
»
QuickPurge® II
»
Launch of Argweld Pipe Weld Purging Systems® for tube, pipe and pipeline industries
»
Weld Purge Monitor improved to read down to 1 part per million
»
Fabtech/AWS annual exhibition was a great success for Huntingdon Fusion Techniques this year
»
Financial Director appointed at HFT
»
New style 'Weld Purge Monitor'™
»
The PurgEye® 300 Nano Weld Purge Monitor™
»
Complete family of 'Weld Purge Monitors™'
»
Orbital welding purge plug kits
»
Grapes or Sugaring? Pipe Weld Root defects can be a thing of the past
»
New white paper published - "Why Post Weld Purging is necessary"
»
New white paper published - "Why use a Weld Purge Monitor"
»
Launch of new Tube and Pipe weld purge systems™
»
PurgEye® 100 Weld Purge Monitor - comprehensive version
»
Weld purging systems


Industry News:
New Samsung SL-65MC/1000 Turning Center
installed at Chicago Roll Company
Roll-Kraft adds CNC machine to Chicago Roll Company
Roll-Kraft, USA
Weld Purge Film® in action
No risk of lost welds with Weld Purge Film®
Huntingdon Fusion Techniques Limited, UK
RT-4000S single-sided turkshead straightener with 2-Axis motorized adjustment
​Rafter Ships RT-4000S Sgl Turkshead with motor adjust
Rafter Equipment Corp, USA
The Steel Plugs Range is specifically designed for heavier duty applications such as long immersion in water, for use at higher temperatures or for contact with acidic or alkaline environments
Heavy-duty leak testing, sealing and stopping with Pipestoppers®
Huntingdon Fusion Techniques Limited, UK
From top: Fin pass stand & welding head; Turks head stands; Forming unit
Universal Forming Line
Adda Fer Meccanica Srl, Italy
PurgEye® 100 in use
Low cost Weld Purge Monitor® for stainless steel welding
Huntingdon Fusion Techniques Limited, UK
The Weld Purge Dams are fitted with a dual inflation and purge hose, an additional purge gas hose and an exhaust which can be connected to one of the HFT® Weld Purge Monitors®
Weld Purge Dams for dished ends and short pipes
Huntingdon Fusion Techniques Limited, UK
HFT® have developed PurgExtra®, for purging tube and pipe joints from 1 - 24
Bright, shiny, oxide-free welds with PurgExtra®
Huntingdon Fusion Techniques Limited, UK
JPC have agreed that they would take over the EET 'bending cells' and keep jobs in Coventry
New year - new boost to local economy!
The Joint Perforating Company Ltd (JPC), UK
The innovative PurgEye® Desk is leading the way in inert gas purging technology by reading oxygen levels from 1,000 ppm, right down to levels as low as 1ppm
Inert gas welding monitor
Huntingdon Fusion Techniques Limited, UK
» VIEW ALL NEWS «