Section 4 Torch: Operation; 01 Machine And Automated Torch Operation; 02 Automation Torch Parts Selection - ESAB CUTMASTER 50+ Operating Manual

SECTION 4 TORCH: OPERATION

4T.01 Machine and Automated Torch
Operation
Cutting With Machine or Automated Torch
These torches are activated by remote con-
trol pendant or by a remote interface device
such as CNC.
1. To start a cut at the plate edge, position
the center of the torch along the edge
of the plate.
Travel Speed
Proper travel speed is indicated by the trail
of the arc which is seen below the plate. The
arc can be one of the following:
1. Straight Arc
A straight arc is perpendicular to the
workpiece surface. This arc is generally
recommended for the best cut using air
plasma on stainless or aluminum.
2. Leading Arc
The leading arc is directed in the same
direction as torch travel. A five degree
leading arc is generally recommended
for air plasma on mild steel.
3. Trailing Arc
The trailing arc is directed in the oppo-
site direction as torch travel.
D i r
e c t
i o n
o f T
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Straight Arc
A-02586
Automation and Machine Torch Operation
0700 402 229
Piercing With Machine or Automated Torch
4T.02
Standoff Distance
Trailing Arc
Leading Arc
TORCH OPERATION
CUTMASTER 50+, CUTMASTER 70+
For optimum smooth surface quality, the
travel speed should be adjusted so that
only the leading edge of the arc column
produces the cut. If the travel speed is too
slow, a rough cut will be produced as the arc
moves from side to side in search of metal
for transfer.
Travel speed also affects the bevel angle of
a cut. When cutting in a circle or around a
corner, slowing down the travel speed will
result in a squarer cut. The power source
output should be reduced also. Refer to the
appropriate Control Module Operating Man-
ual for any Corner Slowdown adjustments
that may be required.
To pierce, the arc should be started with the
torch positioned as high as possible above
the plate while allowing the arc to transfer
and pierce. This standoff helps avoid having
molten metal blow back onto the front end
of the torch.
When operating with a cutting machine, a
pierce or dwell time is required. Torch travel
should not be enabled until the arc pene-
trates the bottom of the plate. As motion
begins, torch standoff should be reduced to
the recommended 1/8 - 1/4 inch (3-6 mm)
distance for optimum speed and cut quality.
Clean spatter and scale from the shield cup
and the tip as soon as possible. Spraying
or dipping the shield cup in anti - spatter
compound will minimize the amount of scale
which adheres to it.
Automation Torch Parts Selection
Check the torch for proper consumable parts.
The parts supplied in the torch may not be
correct for the operator's chosen amperage
level or operation type. Use Deflector in
mechanized applications that do not require
"Ohmic-Touch" initial height sensing. Use
Shield Cap and Ohmic Clip in mechanized
ap-plications that require "Ohmic-Touch"
initial height sensing. The torch parts must
correspond with the type of operation.
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