Tweco 52 CutMaster - Manual (Page 39)

CUTMASTER 52
Manual 0-4961 OPERATION 4T-7
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.
4T.06 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 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 recom-
mended for air plasma on mild steel.
3. Trailing Arc
The trailing arc is directed in the opposite direction as torch travel.
Standoff Distance
Straight Arc
Trailing Arc
Leading Arc
Direction of Torch Travel
A-02586
Mechanized Torch Operation