Magnum MIG 208 Alu Synergy, Руководство по эксплуатации

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THICK-DROP
- used in the MIG / MAG method at low
current densities and a long arc
- not recommended in forced positions
SPRAY
- used in the MAG method with gas
mixtures
- not recommended in forced positions
SHORT-CIRCUIT
- used in the MAG method with a short arc
- recommended for welding elements of
small thickness and in forced positions
The protective gas determines the efficiency of the welding area shield, but also the method of
metal transfer in the arc, the welding speed and the shape of the weld. The inert gases argon and
helium, while perfectly protecting the liquid weld metal from the atmosphere, are not suitable for all
MIG-MAG welding applications. By mixing helium or argon in appropriate proportions with
chemically active gases, a change in the nature of metal transfer in the arc is achieved, the stability
of the arc increases and the possibility of influencing the metallurgical processes in the weld pool
appears. At the same time, it is possible to significantly reduce or completely
elimination of spatter.
Protective gas
Chemical action Welded metals
Ar inert Essentially all metals except carbon steels
Al, Cu, Cu alloys, Mg alloys, high linear energy of welding is
ensured
He
inert
Al, Cu, Cu and Mg alloys, high linear energies of welding
ensured, low thermal conductivity of gas
Ar + 20-80% He inert
Copper welding with high linear energy of the arc, better arc glow
than in the 100% N shield
2
Mainly recommended for welding corrosion-resistant and
alloy steels
Ar + 25-20% N
2
reducing
Ar + 1-2% O
2
weakly oxidizing
Ar + 3-5% O
2
oxidizing Recommended for welding carbon and low-alloy steels
WHAT
2
oxidizing Recommended only for welding low carbon steels
Recommended only for welding carbon and low-
alloy steels
Ar + 20-50% CO
2
oxidizing
Recommended only for welding carbon and low-
alloy steels
Ar + 10% CO
2+
5% O
2
oxidizing
Recommended only for welding low carbon and low
alloy steels
WHAT
2+
20% O
2
oxidizing
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