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30
0°
-
15°
TRAVEL
1/16”
EDGE START
40°
-
60°
TRAVEL
1
PIERCE START
2
3
Section 3 Operation
NOTICE:
The design of the blow back start
may
cause a slight delay in the arc as the air pressure must built inside the torch tubing and head to create the
pressure needed to force the electrode off the nozzle seat. This may take up to a second, especially when using longer torches or marginal air
supply systems. Restarting the arc in tip saver mode requires retriggering the torch. If the torch does not light after 3 seconds, let go of the
trigger and press it again. If the start or arc is erratic check nozzle and electrode for tightness and wear.
IMPORTANT:
If you use a standoff guide with the torch, it must be adjusted to provide no more than
1/8”
standoff, less if possible. Long standoff heights
reduce cut capacity and quality. It also promotes rapid consumable wear and can prevent the pilot arc from transferring.
EDGE STARTS
Edge starts are the best type of start to promote
consumable and torch life. This reduces blow back
of molten material and allows a smooth gradual start
of the arc and maximizes cutting capacity.
1)
Line up the hole on the tip of the electrode on
the edge of the cut. Hold torch perpendicular to
the cut initially, about
1/16”
off the metal. Slide
the yellow safety lock and squeeze the trigger.
Wait for arc to start.
2)
Once the arc starts, wait for the arc to penetrate
all the way through the metal.
3)
As the torch penetrates the flame all the way
through the metal, tilt the torch so there is a
slight lead in the flame if metal is thin. If the
metal being cut is thick, keep holding torch in a
nearly vertical position.
4)
Begin moving the torch in the direction of the
cut. Maintain
1/16”
standoff height.
5)
Move the torch fast enough so the sparks and
flame trail from the bottom edge at an angle of
no more than 30° and no less than 10° from
perpendicular to the metal. Excess angle of
sparks/flame indicate too fast of travel speed or
practical cut capacity has been reached. Little
or no angle indicates too slow of travel speed.
PIERCE STARTS
Piercing starts often result in rapid consumable wear
and excess blow back of molten metal deposited onto
torch and consumables. This should be done only as
necessary on thicker material.
1)
Tilt the torch in the direction of travel or to-
ward the side of the metal to be discarded or
wasted at a 40° to 60° angle. Slide the yellow
safety lock and squeeze the trigger. Wait for arc
to start.
2)
Once the arc starts, wait for the arc to transfer
from pilot arc to the cutting arc.
3)
As the flame penetrates through the metal (at a
sloped angle) rotate the torch slowly to the
vertical position. Tilt the torch from 0°
-
15° for
thin metal cuts, or hold it nearly perpendicular
for thicker metal cuts.
4)
Begin moving the torch in the direction of the
cut. Maintain
1/16”
standoff height.
5)
Move the torch fast enough so the sparks and
flame trail from the bottom edge at an angle of
no more than 30° and no less than 10° from
perpendicular to the metal. Excess angle of
sparks/flame indicate too fast of travel speed or
practical cut capacity has been reached. Little
or no angle indicates too slow of travel speed.
Содержание ULTRA-ARC 205
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