Hard-
Surfacing,
Building
Fusion
Welding
Carbon
Welding
Non-Ferrous
Metals
Heating
& Heat
Treating
Braze
Welding
Welding
Cast Iron
Welding
Ferrous
Metals
Brazing
&
Soldering
Equipment
Set-Up
Operation
Equipment
For
OXY-Acet
Structure
of
Steel
Mechanical
Properties
of Metals
Oxygen
&
Acetylene
OXY-Acet
Flame
Physical
Properties
of Metals
How Steels
Are
Classified
Expansion
&
Contraction
Prep
For
Welding
OXY-Acet
Welding
& Cutting
Safety
Practices
Manual
Cutting
Oxygen
Cutting By
Machine
Appendices
Testing
&
Inspecting
4
Fig. 4-3. The oxidizing flame, which
results from an excess
of oxygen in the gas mixture, has a shorter, more
sharply-pointed inner cone than the neutral flame.
Fig 4-1. The neutral flame, which results
from burning a
mixture containing approximately equial
volumes of oxygen and acetylene. The well-defined
core of the flame (extremely bright pale
blue) is known as the “inner cone”. Fig.
4-2. The excess acetylene flame, which has a whitish
feather around and beyond the inner cone. Continued
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