Assignment: "Gas Cutting," pages 4-1 through 4-26.
Learning Objective: Recognize
the relationship of oxidation
to gas cutting.
What portion, if any, of a ferrous
metal becomes oxidized during the
oxygas cutting process?
portiondirectly in the
path of the cutting flame
The portion directly in the
path of the oxygen jet
The portion previously cut
that oxidize readily are best suited
for oxygas cutting.
Objective: Recognize the
construction, operation, and care of
the oxyacetylene and MAPP gas-cutting
tips. The principal difference between
a standard cutting torch and an
oxygas welding torch is that the
cutting torch has an extra tube for
Unless the cutting torch tips and
seats are properly designed and
constructed, what type of problem
can occur during their use?
1. Improper cooling
2. Improper gas flow
3. Leakage 4. All of the above
When cutting torch tips are not in
use, you should take what action to
keep them in proper working order?
Place them in kits
them in toolboxes
3. Store them in a container
equipped with a wooden rack
Store them in a mount-out box
3-6. Of the
following basic types of MAPP
gas-cutting tips, which one is often
used by a steelworker?
pressure only 2.
Standard pressure only
High pressure and normal
pressure and high cutting
Figure 3A.Cutting torch tips.
IN ANSWERING QUESTIONS 3-7 THROUGH 3-9,
REFER TO FIGURE 3A.
3-7. What cutting torch tip is a
MAPP gas one-piece tip?
1. A 2. B