Jasic EVOLVE 200 Operator's Manual page 72

OPERATION - PULSE MIG
Before starting any welding activity ensure that you have suitable eye protection and
protective clothing. Also take the necessary steps to protect any persons within the welding
area.
MIG/MAG Pulse Welding Mode
Pulse Welding Mode:
Pulsed MIG is an advanced form of welding that takes the best of Dip and Spray forms of transfer while
minimizing their disadvantages. Unlike Dip, pulsed MIG does not create spatter or run the risk of cold
lapping without compromising penetration, so its an ideal process to use for thin and soft materials like
aluminium or stainless steel.
Using a single pulse weld alternates between fixed peak current and background current.
•
Reduced heat input, so you can weld thinner than standard MIG, perfect for aluminium
•
Weld faster than with TIG welding, but offering the same aesthetic appearance as TIG
•
Spatter free welding, cutting your clean-up time to nothing
•
Great penetration even with lower heat
Pulse MIG is a non-contact transfer method between the electrode and the weld puddle. This means
that the electrode (welding wire) never touches the puddle. This happens through high-speed
manipulation of the output of the welding machine. It's a spatter free process that will run at a lower
heat input than spray transfer method.
The pulsed MIG process works by crating one droplet of molten metal at the end of the electrode (wire)
per pulse. Then, just the right amount of current is added to push that one droplet across the arc into
the puddle. The transfer of these droplets occurs through the arc, one droplet per pulse.
During the process, the current rises to it's peak and the droplet is formed. Then, in background current
mode, the current is lowered to reduce the overall heat input, so the height and width of the peak is
important for proper transfer.
Pulsed MIG is one of the best welding processes for a wide variety of welding applications and metal
types.
Selecting MIG mode:
Following on from Synergic MIG mode
selecting MIG is the same and is actioned
by pressing the MMA/TIG/MIG icon to
select MIG welding mode.
Upon selecting MIG, the MIG corresponding
icon will be shown as circled red right.
Selecting Pulse MIG mode:
Press the Manual/Synergic/Pulse/Double Pulse icon to select Pulse.
Upon selecting pulse mode, only the pulse corresponding icon will be
shown as circled red right.
The control panel image right is an example of the Evolve 200 now set
up in Pulse MIG mode.
Please Note:
Pulse MIG mode offers a fixed pulse setting, so pulse background settings are not adjustable.
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