BUG-O Systems Flame Cutting - Manual (Page 22)

22
h. If travel is not started immediately, the bottom
1/3 of the cut will pocket and gouge due to
the expanding oxygen gas and the molten
slag, the same as too slow a travel speed
would make. The top of the cut should always
lead the bottom of the cut even if it’s only 1/16
(1.6mm) on an inch. This prevents the
opening or kerf from being clogged with slag.
It is better that the cut be made a little on the
fast side, which would give a rippled wave
appearance, rather than on the slow side
which would require repairing or reburning.
7. OBSERVING THE CUT
a. Minor adjustments may have to be made to
insure good smooth cut.
(1) The “high quality” cut is shown in Sketch #1.
Top edge is square, face smooth, side scale
pulls away from the sides, bottom slag comes
off clean with a little tap, torch tip height and
travel speed is correct.
Flame Cutting Handbook.p65 5/9/2007, 8:06 AM 22