This document describes trailing shields, which are devices used to provide inert gas coverage when welding titanium alloys and stainless steel. The shields ensure welds are protected from discoloration and oxidation. They are designed for flat welding and internal or external welds on pipes, tubes, tanks, and vessels. Using a trailing shield reduces gas consumption and eliminates costs from rework due to oxidation. It also saves money on grinding time, cleaning materials, and disposal costs compared to not using a shield. Potential customers include manufacturers of aircraft engines, boilers, heat exchangers, pipes, sports cars, and any stainless steel fabricator seeking to reduce cleaning costs. The payback period for purchasing a trailing shield is just two welds.

1. TrailingShields
for welding
Titanium&
Stainless Steel
Argweld®

2. 1
Trailing Shields

3. 2
Trailing Shields
Main Features
 Designed for effective inert gas coverage when welding
titanium alloys and stainless steel
 Ensures welds are left bright and shiny and eliminates
both discolouration& oxidation
 For use on flat sheet or plate & internal or external
welds on tubes, pipes, tanks, vessels, heat exchangers
etc.
 Fit any make of GTAW/Tig,
PAW/Plasma or GMAW/Mig welding
torch for manual or automatic welding
continued..

4. 3
Trailing Shields
Main Features
 Reduces gas consumption, saves re-work &eliminates
wasted material costs, due to oxidation
 Flexible silicone side walls to create closed inert gas
chamber
 Auxiliary hoses for greater shield gas coverage where
required
 Triple mesh gas distribution system
with non turbulent gas flow
 Replaceable silicone rubber side walls

5. 4
Trailing Shields
Potential Customers
 Aero engine manufacturing and maintenance
companies
 Boiler, Heat Exchanger, Vacuum Tank, Cryotank
manufacturers
 Semi conductor, petrochemical, food, dairy piping
fabricators
 Racing and sports car manufactures
 Every stainless steel fabricator
wishing to save money by dramatically
reducing cleaning costs

6. 5
Trailing Shields
Example
A typical costing of a weld
with trailing shield
vs
without trailing shield
36'' Ø Tank, vessel or pipe
UK List price:
Trailing Shield for a 36'' Ø tank… £196
continued..

7. 6
Trailing Shields
36'' Ø Pipe/Tank welded
without a Trailing Shield
36'' Ø Pipe/Tank welded
witha Trailing Shield
Grinding time1 hr (est.) £30.00 £0.00
Cleaning material costs £10.00 £0.00
Disposal costs £10.00 £0.00
Grinding consumables £10.00 £0.00
Administration costs* £100.00 £10.00 (1 product only)
Cleaning time 1 hr (est.)
subject to size of weld.
£30.00 £0.00
Cost of
Trailing Shield
£0.00
£196.00
Once only purchase
Total costs £190.00 (every weld)
£206 (first weld only)
Approximately £10 for all
subsequent welds

8. 7
Trailing Shields
Fast Payback
 The use of a TraillingShield gives
payback in just two welds
 The use of aTrailing Shield of some kind for titanium
welding is almost mandatory, for the applications
where the productcannotbe placed inside a
Welding Enclosure
 When welding larger titanium components, that could
be placed in a Welding Chamber of some kind,
Trailing Shields might be dramatically more cost
effective than the use of a
Welding Chamber

9. 8
Trailing Shields
Automatic Inline Seam Welder
Homemade
Trailing
Shield
Argweld®
Trailing
Shield

10. 9
Trailing Shields
Family Shot
Family of Shields for Automatic Welding Machines.
Secondary inert gas shield delivery.

11. 10
Trailing Shields
External Welding
Trailing Shield for the external welding of pipes and tubes

12. 11
Trailing Shields
Internal Welding
Trailing Shield for internal welding of large diameter
pipes and tubes, tanks and vessels

13. 12
Trailing Shields
Automatic Welding
Trailing Shield for automatic welding machine used for flat plate
(Note dual shield gas supply)
D) 75 mm/3” approx Width including gasket
A) 250 mm/10” approx Body length
B) 320 mm/12.6” approx Length including gasket
C) 50 mm/2” approx Body width

14. 13
Trailing Shields
Fitted to Mig Torch

15. 14
Trailing Shields
How a Trailing Shield can be used to shield the outside of a
circumferential weld while being welded from the inside.
(Inset bottom right : finished weld with no discoloration)

16. 15
Trailing Shields
Inside view
Inside view of a Trailing Shield, showing gauze mesh for
uniform gas distribution and high temperature resistant
silicone rubber replaceable skirts.

17. All photos courtesy of
Huntingdon Fusion Techniques Limited, UK.
Thank
you for
your
attention