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The general approach to fix Gas Metal Arc Welding (GMAW) problems is to start at the wire spool then work through to the MIG torch.
There are two main areas where problems occur with GMAW, Porosity and Inconsistent wire feed.
When there is a gas problem the result is usually porosity within the weld metal. Porosity always stems from some contaminant within
the molten weld pool which is in the process of escaping during solidification of the molten metal.
Contaminants range from no gas around the welding arc to dirt on the workpiece surface. Porosity can be reduced by checking the
following points.
MIG WELDING TROUBLESHOOTING
WARNING!
Disengage the feed roll when testing for gas flow by ear.
Wire feeding problems can be reduced by checking the following points.
MIG 200
OWNER’S MANUAL
Содержание MIG 200
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