African Fusion June 2016 Final

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34 AFRICAN FUSION June 2016
Welding and cutting
Renttech South Africa is pleased to
introduce awelding solution to their
customers which ‘ticks all the boxes’
when it comes tooperational andenergy
efficiency.
The Uniarc Multiarc 350 Compact
multi-process inverter is a robust, light-
weight unit that offers customers an
easy transition between multiple weld-
ing processes, bringing
new levels of versatil-
ity to the end-user, as
New welding app launched at Tube 2016
An innovative welding app was
launched on the Sandvik stand at
Tube 2016, specifically designed to meet
welding professionals’ requirements
when planning and performing welding
projects. The app, Sandvik Welding, is
availableand free todownload for phones
and tablets from the App Store for Apple
and Google Play for android devices.
Built with ease of navigation, the app
brings extensive information to hand for
welding engineers, welders, specifiers,
project engineers and owner operators.
Brimmingwith useful technical data it al-
lows users to plan which material grades
to choose for which jobs, make ferrite
number calculations, determine the level
of heat input for a specific grade, select
filler material and get help.
There is full information on welding
parameters; gas-shieldingmixtures,maxi-
mum interpass temperatures and post-
weld heat treatments. All calculations
and recommendations are designed to
help operators and planners ensure good
weld metallurgy is being achieved in the
weldment, while maintaining optimum
material properties.
“We believe the newSandvikWelding
app to be the most comprehensive avail-
able today, providing welding engineers
with a vast amount of informative data
and practical functions – created tomeet
customers’ weldingneeds inahandy form
right to their phone or tablet,” explains
Clemente Tallarico, Sandvik’s global
product manager for welding.
well as cost-saving advantages.
“The Multiarc 350 represents highly
efficient inverter technology, which
draws 30% less current than traditional
rectifiers,” says Johan Bester, welding
product manager at Renttech South
Africa. “The multi-process capability
essentially allows for one machine to
do the work of two or three machines,
providing further operational efficien-
cies and cost benefits.”
Another significant benefit is that
the unit is generator-compatible, while
meeting all mining safety specifica-
tions. The dual voltage of 380 and
525 V enables flexibility on a min-
ing operation, be it workshop or
plant, without the risk of dam-
age to PC boards.
“Being generator-compat-
ible makes the unit suitable
for customers who have been
forced to install generators
in their workshops to ensure
continuity in their produc-
tion process. Traditionally ma-
chines that did not have this
safety feature would have
encountered damaged PC
boards and components
from typically older genera-
tors that did not supply con-
sistent power to themachines,”
explains Bester.
The Uniarc Multiarc
350 Compact multi-
process inverter from Renttech
is a robust, lightweight unit that
offers customers an easy transition
between multiple welding processes.
New all-in-one multi-process inverter “The inverter benefit also applies
to generators as its current draw is less
on a generator, making for better fuel
efficiency; and, depending on the size
of the generator, the ability to run more
machines off the same generator.”
The Multiarc 350 offers easy transi-
tion between MIG, TIG and FCAW weld-
ing processes and is recommended for
carbon steel, alloy steel and stainless
steel applications. Added advantages
include a built-inwire feeder with a dual
drive system and quick polarity change
when welding gasless flux-cored wires.
“Multi-processmachines arebecom-
ing increasingly sought-after because
manywelding jobs combine twoormore
processes in the same joint, for example
TIG for the root and fill, followed by gas
assisted flux-cored wires for capping,”
notes Bester.
Inverters also producemore refined
arc characteristics, according to Bester,
which has a direct impact on weld qual-
ity. In addition, the Multiarc 350 weighs
approximately half of its rectifier coun-
terparts, which significantly enhances
the mobility of the unit.
“This is a huge advantage, in that
the unit canbemoved fromworkshop to
site, and so the job is not limited to one
area, such as a production line.
“Renttech SA can also offer custom-
ers product expertise and full service
backup on this unit,” Bester concludes.