BUG-O Systems Flame Cutting - Manual (Page 26)

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2. The travel speed was a little too fast in this cut.
This is shown by the angle (or rake) of the
dragline. The surface of such a cut is rippled
but reasonably smooth. It required a minimum
of grinding to be welded without machining.
3. In this cut, the travel speed was a little too slow.
This caused an accumulation and sticking of
molten slag which resulted in the irregular
surface. Gouging and pockets such as these
will have to be built back by welding. They must
then be machined or hand ground before the
cut surface can be used as a proper weld joint.
Flame Cutting Handbook.p65 5/9/2007, 8:06 AM 26