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CONNECTING THE GAS SUPPLY

2. Connect a bottled gas supply to

the small tube at the back of the

welder.

MIG WELDING PRINCIPLES

MIG (Metal Inert Gas) welding allows you to fuse together two similar metals

without altering the properties of the metal.

A consumable wire electrode is continuously fed through the welding torch

that is fitted with a concentric gas nozzle. the wire is connected to a high

voltage supply which creates an electric arc between the electrode (the

wire) and the workpiece. The arc is used to create the required heat to turn

the metal into a molten state. The wire is used as both the electrode and as a

filler.

The gas is used to prevent oxidation and to shield the arc and the weld from

atmospheric contamination. The choice of gas is dependent upon the

material being welded.

When using the welder in a gasless configuration the shielding gas is created

from the flux within the welding wire.

When using the welder outside you may need to erect a wind break to make

sure the shielding gas is not blown away, thereby leaving a poor quality weld.

Metal Being Welded

Suitable Gas

Part No

Mild Steel

Carbon Dioxide (CO2)

6000643

Stainless Steel

Argon

6000661

Thin Sheet Metal/Mild Steel

Carbon Dioxide (CO2)/Argon Mix

6000660