ESAB CUTMASTER 50+ Operating Manual page 52

CUTMASTER 50+, CUTMASTER 70+
Current Setting
Current settings depend on torch travel
speed, mode of operation (hand or machine
torch), and the amount of material to be
removed.
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.
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35°
TORCH OPERATION 0700 402 229