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MANUAL - WELDER Fantasy PULSE BI-201
WELDING METHOD MMA - coated electrode
Arc welding with covered electrode is also called MMA (ang. Manual Arc Welding), which is the oldest and
most universal method of arc welding. The method is used for MMA wrapped electrode consisting of a metal core
coated with a padding. Between the end electrode and the weld material is produced an electric arc. The arc is
created by touching the end of the electrode to the workpiece. Welder electrode threads as its fusion to the work piece
so as to keep the arc length constant and at the same time moves the end of melting along the welding line. The
melting electrode coating forms a protective gas the molten metal from exposure to the ambient atmosphere, and then
solidifies and forms a weld pool on the surface of the slag,
Welding cables and connect the mass to the corresponding output jacks welders, according to the manufacturer's
recommended polarity of the electrodes, which intend to weld.
