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| WORKHORSE
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"A markedly useful or durable machine"......
Webster Dictionary |
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The
Workhorse 300ST
Arc Starter TIG Welder and Stick Welder
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The
Workhorse TIGweld 300ST is a very rugged capacitor
discharge arc starter TIG/Stick welding machine, weighing approximately
80lbs/36.3Kgs, and designed specifically for demanding TIG welding
where the tungsten (wolfram) electrode is not allowed to touch
the base metal which could cause contamination of the weld.
The underlying design concept was to employ proven electrical
and mechanical technologies and build a “no-nonsense”,
cost-effective machine where usability, reliability and ruggedness
are the most important design parameters. This in combination
with a capacitor discharge arc starter makes the Workhorse
TIGweld 300ST a remarkable TIG machine. The single pulse
starting the arc does not produce radio noise, which can interfere
with cell phones and other communication systems. For this reason,
the capacitor discharge TIG welder is a better solution than
high frequency (HF) systems, which do cause interference.
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- TIG
and Stick welding current from 10 - 400 Amperes
in 2 ranges.
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- Available
in dual primary voltage, 240V (single or three phase)
and 480V. Also available in single voltage 240V,
480V, 575V and 400V.
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- Easy
to strike the arc. The spark jumps half an inch
in argon gas and stops when the TIG arc is established.
The Workhorse 300ST even has an inside adjustable
pre flow and post flow.
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- Carbon
arc gouging protection. (Circuit design that eliminates
the harmful currents caused during arc gouging has
been added)
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- Constant-Arc-Power
characteristic means less dependence on a steady
hand to achieve a good weld and reduces risk for
electrode “sticking”. The Constant-Arc-Power
characteristic is, if possible, even more advantageous
when TIG welding than when stick welding. The TIG
arc remains the same cylindrical shape without flaring
out when increasing the arc length. The Constant-Arc-Power
characteristic makes burn-through almost impossible
when increasing the arc length. This means that
you can forget about holding a constant arc length,
which makes TIG welding much easier.
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Corrosion
Resistance: All welders shipped after June 15,
2005 include Seahorse
protection to withstand corrosion in natural environments
such as those found in shipyards, power plants,
offshore oil rigs and in mines. Our process is
based on experiences of 1,000+ welders used on
the oil rigs in the North Sea. Arcon guarantees
all models against corrosion-related failures
for five-years.
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- Smart
surge control reduces weld puddle agitation caused
by big drops from low hydrogen electrodes, eliminating
a major cause of slag inclusions in the weld.
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- Inverter
circuitry allows for low weight (80lbs/36Kg) and
rugged design.
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- Fiberglass
enclosure allows for rough handling in demanding,
tough environments.
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- The
case has extra thick “skids” on the bottom
case as part of the design protecting the welder
when dragged on almost any surface.
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- Foldable
handles with built-in grooves, as well as ridges
in the case, makes nesting of units easy and practical.
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- Units
can be connected in parallel for higher current
or in series for higher voltage, should there be
a need.
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MECHANICAL DESIGN
The Workhorse 300ST provides exceptional ruggedness and durability
in tough and demanding environments such as construction, shipbuilding,
nuclear power plants, and offshore welding. The case is made
out of solid fiberglass, which provides sturdier resistance
to dents and forces than a sheet metal case.
ELECTRICAL DESIGN
The Workhorse 300ST uses an SCR inverter design for its power
supply. The inverter design allows for an industrial welding
machine weighing only 79lbs/36kgs. We have chosen the proven
SCR component instead of the IGBT because of reliability. We
have strong indications from the market that SCRs are up to
100 times more reliable in welding applications.
TIG Welding
The Arc Start feature allows no contact between material and
torch. The Arc Start feature is therefore the best solution
for critical TIG welding.
Smart Hot Start
Brings the puddle temperature up quickly for good initial penetration.
The amount of Hot Start is dependent on the weld puddle temperature.
The Workhorse 300ST measures the time in between welds. The
longer the period between stopping and starting, the greater
the Hot Start current. If the arc is broken for less than a
second, the Hot Start is eliminated. This prevents the puddle
from overheating and burning through.
Thermostat-controlled Cooling Fan
The cooling fan starts automatically when welding current exceeds
100 A. If the current drops below 100 A, the fan will stop after
approximately 6 minutes. If the fan is operating when the work
is discontinued, the fan will continue to run and stop after
approximately six minutes.
Option – The Warhorse
The Warhorse 300ST is a 400V or 480V welder designed to protect
the machine from voltage spikes and over voltage surges commonly
found in environments with very “dirty” power distribution
system, such as power plants and shipyards and some generators.This
high resistance to surges and spikes has been achieved by vastly
increasing the capacity of existing surge protection circuits,
adding new surge protectors and by using high voltage rated
components in critical parts of the inverter circuits.
Safety, Warranty and Service
The welding units are designed to meet UL551 and CE requirements.
The units come with a factory warranty and user manual.
Service will be taken care of by the factory or can in many
cases be performed locally by your service authorized Distributor.
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