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SET-UP AND SAFE OPERATING PROCEDURES
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SECTION 6:
WELDING PROCEDURES
In oxy-fuel welding, two metals are joined by melting or fusing their adjoining surfaces. This is
accomplished by directing an oxy-fuel flame over the metals until a molten puddle is formed. Any
foreign material in the molten puddle will change the metals composition and weaken it. A filler rod
is then introduced into the puddle to help the metals fuse together.
6.01 PREPARING THE METALS TO BE WELDED
Clean the metal joints to be welded from all scale, rust, dirt, paint, grease and all foreign 1.
materials.
Some thicker metals may require additional preparation. Base metals 1/8” or less do not 2.
require beveling (see Figure 13. In Addition, see Figure 15, page 37).
Place the metal to be welded on a non-flammable work table and determine where the 3.
tacking will be required.
BUTT JOINT SINGLE V-JOINT DOUBLE V-JOINT
60°
FEATHER EDGE
1/8" OR MORE
60°
SHOULDER EDGE
1/4" OR MORE
1/6" to 1/8"
60°
DOUBLE V-JOINT
3/32" to 1/8"
TACKING TWO PIECES TOGETHER
BEFORE WELDING
ENDS PULL APART
WHILE WELDING
dwg-00386
ADDITIONAL PREPARATIONS
Figure 13: Preparing the Metal
Welding Procedures
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