Shielded Metal Arc Welding (SMAW) or Stick welding is a process which melts and joins metals by heating them with an arc between a coated metal electrode and the workpiece.
When the electrode is moved along the workpiece at the correct speed the metal deposits in a uniform layer called a bead.
POWER SOURCE
The Stick welding power source provides constant current (CC) and may be either alternating current (AC) or direct current (DC), depending on the electrode being used. The best welding characteristics are usually obtained using DC power sources.
The power in a welding circuit is measured in voltage and current.
The amperage needed to weld depends on electrode diameter, the size and thickness of the pieces to be welded,and the position of the welding.
Thin metals require less current than thick metals, and a small electrode requires less amperage than a large one
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