TPi March 2016

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March 2016 Tube Products International 43
Weld purge monitoring
The portable PurgEye®
200 weld purge monitor
is designed to meet the
needs of higher welding
specifications requiring
oxygen levels down to as
low as 10 parts per million
(ppm).
The handheld PurgEye 200
from Huntingdon Fusion
Techniques (HFT) is totally
waterproof and dustproof. It
has warning icons on the
large screen to show low
battery and low sensor
conditions, and also displays oxygen
readings in percentage or in ppm very
accurately down to 10 ppm.
Luke Keane, distributor support for
HFT, said, “Weld purge monitors are
an essential instrument to help obtain
non-oxidised, zero-colour welds by
monitoring the oxygen level when
welding metals such as titanium and
zirconium where high quality and
high strength welds are required. The
PurgEye 200 also finds a place with
those making important zero-colour
joints in stainless, duplex and chrome
moly where a metallurgically pristine
weld is produced with the help of high
quality purging.”
The PurgEye 200 contains an
internal electro-mechanical pump for
automatically drawing samples of purge
gas over the sensor before discharging
it to the atmosphere. The lifetime sensor
eliminates the need for changing cells
every year or so, as is the case with wet
cell instruments. Alarm signals can be
given by the PurgEye 200 to show when
the oxygen level is within or outside the
required ppm range.
HFT has a range of PurgEye weld purge
monitors to measure oxygen levels from
atmospheric content (20.94%) down
to 1 ppm (accurate to 10 ppm), at
which point no discolouration in welds
of any kind should occur. By striving
for zero-colour welds, companies can
eliminate the post-weld cleaning costs
of oxidised welds.
Huntingdon Fusion Techniques – UK
Scarfing technology
Saar-Hartmetall und Werkzeuge GmbH
is dedicated to the techniques of
scarfing longitudinally welded tubes.
Its staff have completely revised its
range of products and have made
important innovations in the design of
the tooling as well as in the quality of the
carbide inserts concerning geometry
and carbide grades. The company’s
hydraulic inside scarfers now start from
19mm inside diameter, and mechanical
tooling from 14mm ID.
Through its partnership with a coating
centre, the company can also improve
specific scarfing problems.
New products include short inside
scarfing tow bars, a hydraulic power
pack with pre-selected pressures and
return button to accelerate the out-
of-cut movement, and an impeder
filtration and pressure station with easy
handling.
Other products include blanks, tools,
rolls and wear parts made of tungsten
carbide, powder metallurgical alloys or
steel.
Saar-Hartmetall und Werkzeuge
GmbH – Germany
products & developments
HFT’s PurgEye 200