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3.
The melted electrode metal is transferred across the
arc into the molten pool and becomes the deposited
weld metal.
The deposit is covered and protected by a slag which
4.
comes from the electrode coating.
The arc and the immediate area are enveloped by an
5.
atmosphere of protective gas
6.
Hold the electrode slightly above the
workpiece to maintain the arc while
travelling at an even speed to create an
even weld deposition (Fig. 10)
7.
To finish the weld, break the arc by
quickly snapping the electrode away
from the workpiece (Fig. 11).
8.
Wait for the weld to cool and carefully
chip away the slag to reveal the weld
metal underneath (Fig. 12).
Manual metal arc (stick) electrodes have
a solid metal wire core and a flux coating.
These electrodes are identified by the
wire diameter and by a series of letters
and numbers. The letters and numbers
identify the metal alloy and the intended
use of the electrode.
The Metal Wire Core works as a
conductor of the current that maintains
the arc. The core wire melts and is
deposited into the welding pool.
The covering on a shielded metal arc
welding electrode is called flux. The flux on the electrode
performs many different functions:
•
producing a protective gas around the weld area.
26
ARC 170 DUAL VOLTAGE ARC/TIG WELDER
For technical questions call 1-800-665-8685
V1.0
Fig. 10
Fig. 11
Fig. 12
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