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68
Cutting Torch Tips
As in welding, you must use the proper size cutting tip if quality work
is to be done. The preheat flames must furnish just the right amount of heat,
and the oxygen jet orifice must deliver the correct amount of oxygen at just
the right pressure and velocity to produce a clean cut. All of this must be
done with a minimum consumption of oxygen and fuel gases. Careless
workers and workers not acquainted with the correct procedures waste both
oxygen and fuel gas.
Fig. 7 Combination torch
Each manufacturer makes many different types of cutting tips.
Although the orifice arrangements and the tips are much the same among the
manufacturers, the part of the tip that fits into the torch head often differs in
design.
Because of these differences, there is the possibility of having two or
three different types of cutting torches in your kits. Make sure that the cutting
tips match the cutting attachment and ensure that the cutting attachment
matches the torch body. Figure above shows the different styles of tips, their
orifice arrangements and their uses. The tips and sears are designed to
produce an even flow of gas and to keep themselves as cool as possible. The
seats must produce leakproof joints. If the joints leak, the preheat gases could
mix with the cutting oxygen or escape to the atmosphere, resulting in poor
cuts or the possibility of flashbacks.
To make clean and economical cuts, you must keep the tip orifices and
passages clean and free of burrs and slag. If the tips become dirty or
misshapened, they should be put aside for restoration.
Vocabulary
rig какое-л. приспособление, устройство, механизм
Syn: apparatus , device
hose шланг
spark искра
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