Argweld Multi Exhaust Manuale utente
Argweld® Multi Exhaust™
Pipe Weld Purge System
USER INSTRUCTIONS
© HFT®
PAGE 2
Copyright © HFT®. All rights reserved.
This publication may not be reproduced by any means without the written
permission of Huntingdon Fusion Techniques HFT®.
All logos, names, trademarks are the property and ownership of HFT®.
E&OE
PAGE 3
Introduction ..................................................................... 3
System Operation ............................................................. 4
Instructions for Use .......................................................... 5
Simple Steps .................................................................... 6
Comparative Examples of Purge Time................................. 7
Replacement Dams ........................................................... 7
The Family Series of Weld Purge Monitors®.................... 9
Our Range of Inatable Tube and Pipe Weld Systems .......... 10
Accessories for Welding .................................................... 11
Other Languages .............................................................. 12
Customer Support and Worldwide Care............................... 13
Warranty.......................................................................... 14
Back Inside Cover ............................................................ 15
Address and Contact Details ..................................... back cover
INDEX
© HFT®
PAGE 4
INTRODUCTION
Thank you for purchasing our Argweld®Multi Exhaust™ Inatable
Pipe Weld Purging System.
We hope this will be successful for you and for the best results
please read instructions before use. If other people use this system,
please ensure that all users either read these instructions or receive
training. Each system is provided with this instruction manual.
These instructions are designed to help the operator obtain the
best results and to prevent damage to the system by incorrect
operation. The proceedures outlined must be followed to prevent
the risk of any damage or operator injury.
Should the operator experience difculty in understanding these
instructions or the operation of this system, please contact your
distributor who is trained in the correct operation of these devices.
In the event of further problems please notify the manufacturer,
Huntingdon Fusion Techniques HFT®, prior to making any
alterations or repairs.
It is intended that the device should be connected to the chosen
back purge gas supply. The purge gas will rst inate the system
and then purge the interspace between the two dams. A two stage
regulator should be used to ensure a regular gas output pressure.
When possible, it is recommended to use a gas ow meter to
ensure that the gas ow rate remains constant at the correct level.
© HFT®
PAGE 5
SYSTEM OPERATION
Correct installation and use of the system will ensure clean, good
and even penetration beads on all pipe joints. By localising the
volume to be purged, savings can be made on waiting time and
shielding gas costs and productivity will increase.
The Argweld® Pipe Weld Purging System comprises two inatable
lightweight polyurethane coated nylon covered dams, connected by
a protected spinal tube which is covered in a low vapour pressure
synthetic material to prevent scratches on the inside of polished
tubes or pipes.
The length of the spinal tube may vary according to purge dam
diameter but can be specially changed if the application requires.
The Argweld®Multi Exhaust™ System has 3 additional inlet/exhaust
ports for applications requiring larger volumes of purge gas such as
titanium welding. Plugs are provided for those ports that are not
required for use.
When an extra purge gas line is connected, the additional exhaust
ports will allow the extra purge gas to escape without over
pressurising the weld pool.
Each Argweld®Multi Exhaust™ System is designed for one nominal
pipe size and all internal diameters of that nominal size (for example,
the 4 inch dam is designed for 4" schedule 10 to schedule 160 sizes).
If the device is used in smaller pipes, it may crease and let air in,
resulting in a contaminated weld.
If the operator attempts to use a device in a larger pipe than it was
manufactured for, it will not function. Each device must be used at
the ow rate recommended otherwise it will not function correctly.
PAGE 6
INSTRUCTIONS FOR USE
To ensure consistent results the following ‘set up’ and operational
procedures should be adhered to:
In use, the purge system will need a constant gas ow and pressure.
The system is tted with a preset argon release valve to purge the
interspace after the dams have inated. Gas ow rate and pressure
must be kept constant for good results.
Gas ow rate should be set to 5 - 8 L/min (11 - 17 CFH) and
maintained at that rate.
By localising a purge, traditional purging methods using high ow
rates are no longer appropriate.
Once a pipe is dammed with an Argweld®Pipe Weld Purging System
which localises a volume of pipe either side of the weld, the operator
can purge at a low ow rate 5 - 8 L/min - (11 - 17 CFH), achieving
fast purge times.
Any additional purge that might be needed can be achieved using a
secondary purge feed.
3 inlet/exhaust ports are integrated in the system for additional purge
gas and to vent any pressure build up.
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SIMPLE STEPS
1The Argweld®Pipe Purge System is positioned using the nylon pull
tags shown below marked
(a)
.
2The Argweld® Pipe Purge System is inated using the inert gas supply.
Once the Purge System is inated, the pressure opens the purge valve,
the air space is purged by the inert gas, displacing the air between
the dams. At the required O₂ level, the joint is ready for welding.
3 During welding the ow rate of inert gas should be maintained to
purge any oxygen released by the increasing temperature.
4When the weld is completed and the post purging time has passed,
the purge line can be detached and the system deated. It may be
advisable to allow a cooling time before removal of the Argweld®
Purging System.
Note: Outside of the joint will normally be taped when the joint design is not closed butt
IntaCal®
Inert Gas
(a)
Inert Gas
Air
Air out
Argon in
Inert Gas
IntaCal®
IntaCal®
3 inlet/exhaust ports
3 inlet/exhaust ports
3 inlet/exhaust ports
Inert gas
inlet hose
3 inlet/exhaust ports
PAGE 8
Deation is usually carried out by detaching the inert gas ination line
from the supply. The inert gas will simply ow out of the inert gas
connector and the dams will collapse allowing them to be easily removed.
Another perfect pipe weld!
Do not use “makeshift” devices like cardboard dams or foam bungs.
They contain a lot of water, water vapour and air, put your weld at risk
and end up costing you more money.
Use the proper tool for the job!
WARNING
Failure to comply with these instruction procedures may lead to
damage being caused to the dam assembly which may not be
covered by our warranty terms.
SIMPLE STEPS
Continued
COMPARATIVE EXAMPLES
OF PURGE TIME
REPLACEMENT DAMS
In the event of one of the dams being damaged, replacement dams
are available.
The dams are easily changed.
Please contact us or your local distributor for information.
Pipe
Length
Pipe
Diameter
Normal Purge
time at 10 L/
min (168 cfh)
Argweld®
Time at 10 L/
min (168 cfh)
10 m
(33")
100 mm
(4") 26 min 1.5 min
10 m
(33")
200 mm
(8") 83 min 4 min
10 m
(33")
300 mm
(12") 173 min 8 min
PAGE 9
The FAMILY SERIES of
WELD PURGE MONITORS®
© HFT®
Argweld®PurgEye®Range
Huntingdon Fusion Techniques HFT®is the only
Company to have a complete ‘Family’ Series of
Weld Purge Monitors®.
Pioneering the way in weld purging technology
where real science has been used to create a
family range to suit all weld purging, purity
levels and budgets.
The Argweld®PurgEye® ‘Family’ series includes:
PurgEye® 100 ‘IP65’ for levels from 20.94%
to 0.01% (100 ppm).
PurgEye®200 new rechargeable battery
powered measuring down to 10 ppm.
PurgEye®300 Nano low cost entry level model
for 1000 to 10 ppm.
PurgEye®300 fully programmable with data
recording for 1000 to 10 ppm.
PurgEye®500 like the 300 with an integral
pump.
PurgEye® 600 fully computerised colour touch
screen model with wireless USB download of
recorded data from 1000 ppm down to 10 ppm.
PurgEye® 1000 Remote Weld Purge Monitor®.
The 10 ppm sensing head can monitor up to
1 km away.
PAGE 10
Our range of Inflatable Tube and
Pipe Weld Purge Systems
Argweld®PurgElite® Inatable
Tube and Pipe Weld Purge
Systems simplify the process of
inert gas purging and are quick
and easy to install. Suitable for
tubes and pipes from 1-24”ø
(25 - 600mm).
Argweld®Quick Purge®II
Systems are used for larger
diameter, high quality, reliable
welding of stainless steels,
duplex steels and titanium tube
and pipe joints to ensure a very
fast weld purge time and a very
high quality weld root, free from
oxidation and discolouration.
Suitable for pipes of 6-96”ø
(150 - 2400 mm).
With new
RootGlo®accessory and new
IntaCal®purge gas release.
The Argweld®HotPurge™
Inatable Pipe Weld Purge
Systems for Pre-heated and
Post-Weld Heated Pipework are
suitable for use up to 300˚C
(572˚F) for 24 hours. These
high quality manufactured heat
protected systems are suitable
for the welding of pre-heated
pipework, such as chrome
steels, typically P91, CMV, etc.
© HFT®
© HFT®
© HFT®
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