Everlast POWER i-MIG 253DP Operator's Manual page 42

Section 2
prevent incomplete fusion. All MIG welding is
done, regardless of transfer method is com-
monly done with Argon, or more rarely, an Ar-
gon/Helium mix. Copper/Bronze should be
welded with 100% Argon.
Most double Pulse MIGs are largely used for
Aluminum welding, though they can be used
for Stainless Steel or Steel welding or Bronze
brazing. The Double Pulse MIGs, are usually
completing full cycles at a frequency of 10 Hz
or less (though there may be many single
pulse cycles within one full Double Pulse cy-
cle). Double Pulse MIG is commonly associat-
ed with the "TIG" look, with well defined rip-
ples. The heating and cooling is done at a level
and speed that allows the weld to cool and
begin to freeze somewhat between the high
pulse stages of the pulse cycle without extin-
guishing the arc or completely loosing the mol-
ten puddle. This is done by two alternating be-
tween two layers of single pulse and can offer
aesthetic advantages over single pulse MIGs.
While heat management is also attainable,
double pulse capable MIGs are sought after as
they can mimic the style and look of TIG while
offering improved production levels. The skill
level required by double Pulse-MIG to obtain
competent welds is much lower than TIG. The
single pulse is not comparable in look to the
look of the double pulse MIG weld, even
though some refinement of the weld is possi-
ble in a single pulse MIG. The main goal of Sin-
gle Pulse MIG is to improve heat control, gain
weld speed and give directability to the arc.
Basic synergic MIG applications and its use in
pulse MIG. Both pulse types have many varia-
tions from brand to brand and model to mod-
el. But most modern forms of pulse are com-
plicated to set manually, with most of the pa-
Setup Guide and component Identification
PULSE MIG OPERATION
rameters taken out of the control of the user,
and only allow minor fine tuning by the user, if
any at all. The controls that do exist in these
pulse models are often not clearly defined in
their function or adjustment values. Older
Pulse MIGs from generations ago, allowed
more adjustments. However, these older
transformer based and early inverter based
pulse MIGs were often too difficult to set with-
out considerable training and experience.
Newer generations of Pulse MIG welders, in-
cluding the Power i-MIG 253DPi are controlled
by digital programs which are programmed by
the factory for optimal performance based off
of engineered testing and user experience.
This type of control is considered to be
"synergic". New synergic MIG welders keep
frequency, voltage, inductance, wire speed
and a few other parameters all within a tightly
controlled range that prevents the user from
going too far astray. Synergic MIG does not
just extend to Pulse MIG welding. It can be
used in non-pulse forms of MIG as well. The
main idea, is that the unit automatically com-
putes and sets up the output parameters
based off of the operator's input of infor-
mation, such as wire-type and wire diameter.
While Synergic Pulse MIG is a great develop-
ment that helps the untrained welder to learn
and setup the equipment quickly, the lack of
commonality in terms, clearly defined refer-
ences to values, and even differences in the
nomenclature make employing Pulse MIG
welders for jobs that require strictly defined
parameter values quite difficult. What's more,
settings are hard (if not impossible) to trans-
fer across brands or model variations if a pro-
cedure has been qualified using one brand or
model of welder. However, with these nega-
tives aside, Synergic Pulse-MIG is quickly find-
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