OPERA
TING INSTR
UCTIONS
33
MIG 180 INVERTER WELDER 058-9306-4
Stick welding operation
Selection of electrode
1. Determine the type and thickness of the
metal to be welded and the position of
the work piece.
2. Select the appropriate type of electrode
and the amount of heat required for the
welding process.
3. Set higher amperage for thick and heavy
metals.
4. Try the intended weld on scrap metal to
ensure the proper determination of the
type of electrode and the amperage.
On selection of a proper electrode:
•
The bead will lay smoothly over the
work piece without ragged edges
(fig 2I).
•
The base metal puddle will be as deep as
the bead that rises above it.
•
The welding operation will make a
crackling sound.
On selection of a small electrode:
•
The bead will be high and irregular
(fig 2J).
•
The arc will be difficult to maintain.
MC-589306-44
fig 2I
MC-589306-45
fig 2J
