04 Mechanized Torch Operation - ESAB THERMAL DINAMICS CUTMASTER 60i Operating Manual

Lead Angle
The angle between the torch and workpiece
depends on the output current setting and
torch travel speed. The recommended lead
angle is 35°. At a lead angle greater than 45°
the molten metal will not be blown out of
the gouge and may be blown back onto the
torch. If the lead angle is too small (less than
35°), less material may be removed, requiring
more passes. In some applications, such as
removing welds or working with light metal,
this may be desirable.
Torch Head
Standoff Height
Workpiece
A-00941_AB
Gouging Angle and Standoff Distance
Standoff Distance
The tip to work distance affects gouge qual-
ity and depth. Standoff distance of 1/8 - 1/4
inch (3 - 6 mm) allows for smooth, consistent
metal removal. Smaller standoff distances
may result in a severance cut rather than a
gouge. Standoff distances greater than 1/4
inch (6 mm) may result in minimal metal
removal or loss of transferred main arc.
Slag Buildup
Slag generated by gouging on materials such
as carbon and stainless steels, nickels, and
alloyed steels, can be removed easily in most
cases. Slag does not obstruct the gouging
process if it accumulates to the side of the
gouge path. However, slag build - up can
cause inconsistencies and irregular metal
removal if large amounts of material build
up in front of the arc. The build - up is most
often a result of improper travel speed, lead
angle, or standoff height.
0-5561
4T.04 Mechanized Torch Operation
Cutting With Mechanized Torch
The mechanized torch can be activated
by remote control 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
35°
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 opposite
direction as torch travel.
D i r
e c t
i o n
o f T
o r c
Straight Arc
A-02586
OPERATION
CUTMASTER 60i
h T
r a v Standoff Distance
e l
Trailing Arc
Leading Arc
Mechanized Torch Operation
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