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> Figure 2. Arc Action and Electric Welding Polarity
Shielded-arc or Heavy-coated Electrodes.
Functions of Electrode Coatings
Welding Operations, I
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WELDING
OPERATIONS I -
OD1651
-
LESSON
1/TASK
1
FIGURE
2.
ARC
ACTION
AND
ELECTRIC
WELDING
POLARITY.
dipping,
extrusion
, or other suitable process.
The
electrodes
are
manufactured
with three
general types
of coatings: cellulose,
mineral,
and
combinations
of mineral
and
cellulose coating.
7