too often, careless workers or ones not acquainted with
the correct procedures waste both oxygen and fuel gas.
Just as in welding, you must use the proper size
Cutting tips are made of copper or of tellurium-cop-
cutting tip if quality work is to be done. The preheat
per alloy. Each manufacturer has cutting tips of different
flames must furnish just the right amount of heat, and
designs. The orifice arrangements and tip material are
the oxygen jet orifice must deliver the correct amount
much the same among various manufacturers; however,
of oxygen at just the right pressure and velocity to
the part of the tip that fits into the torch head often differs
produce a clean cut (kerf). All of this must be done with
in design. Figure 8-11 shows several different orifice
a minimum consumption of oxygen and fuel gases. All
arrangements and their uses.
Figure 8-11.--Common cutting torch tips and their uses.