Strata EZIMIG185C, Operating Instructions Manual

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Two different welding processes are covered in this sec on (GMAW and FCAW), with the inten on of
providing the very basic concepts in MIG welding, where a welding torch is hand held, and the electrode
(welding wire) is fed into a weld pool, and the arc is shielded by a gas (GMAW) or flux cored wire (FCAW).
This process, also known as MIG welding, CO2 welding, Micro Wire Welding, short arc welding, dip transfer
welding, wire welding etc. It is an electric arc welding process which fuses together the parts to be welded
by hea ng them with an arc between a solid con nuous, consumable electrode and the work. Shielding is
obtained from an externally supplied welding grade shielding gas. The process is normally applied semi
automa cally; however the process may be operated automa cally and can be machine operated. The
process can be used to weld thin and fairly thick steels and some nonferrous metals in all posi ons.
Figure 37
This is an electric arc welding process which fuses together the parts to be welded by hea ng them with an
arc between a con nuous flux-filled welding wire and the work. Shielding is obtained through
decomposi on of the flux within the tubular wire. Addi onal shielding may or may not be obtained from
an externally supplied gas or gas mixture. The process is normally applied semi automa cally; however the
process may be applied automa cally or by machine. It is commonly used to weld large diameter wires in
the flat and horizontal posi on and small wire diameters in all posi ons. The process is used to a lesser
degree for welding stainless steel and for overlay work.
Figure 38
5.1 MIG Basic Welding Techniques
5.2 Gas Metal Arc Welding (GMAW)
5.3 Flux Cored Arc Welding (FCAW)
5. MIG BASIC WELDING GUIDE
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EZIMIG185C