Tweco A40-A60 CutMaster - Manual (Page 42)

CUTMASTER A40, A60
OPERATION Manual 0-5120 4T-8
35°
Workpiece
Torch Head
Standoff Height
A-00941_AB
Gouging Angle and Standoff Distance
Standoff Distance
The tip to work distance affects gouge quality 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 sever-
ance cut rather than a gouge. Standoff distances
greater than 1/4 inch (6 mm) may result in mini-
mal 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 accumu-
lates 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.