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§6 Welding Trouble Shooting
§6.1 MIG Welding - Trouble Shooting
The following chart addresses some of the common problems of MIG welding. In all
cases of equipment malfunction, the manufacturer’s recommendations should be strictly
adhered to and followed.
Wire feed speed set too high
Select lower wire feed speed
Select a lower voltage setting
select the correct polarity for
the wire being used - see
machine setup guide
Bring the torch closer to the
work
Remove materials like paint,
grease, oil, and dirt, including
mill scale from base metal
Use clean, dry, rust free wire.
Do not lubricate the wire with
oil, grease etc.
Inadequate gas flow or too much
gas flow
Check the gas is connected,
check hoses, gas valve and
torch are not restricted. Set the
gas flow between 20-40 CFH
(6-12 l/min) flow rate. Check
hoses and fittings for leaks.
Protect the welding zone from
wind and drafts
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