Magnum MIG 208 Alu Synergy, Руководство пользователя

Страница: 19 / 24

19
GRUBOKROPLOWY - used for MIG / MAG
low current densities and long arc
-
not recommended in forced positions
SPRAY
-
used in the MAG gas mixtures
- not recommended in forced positions
Short circuit
-
used in MAG welding with short arc
-
recommended for welding parts of small thickness
and forced positions
The protective gas guards determine the efficiency of the welding area, but also of a process for transferring the
metal in the arc, the welding speed and the shape of the weld. Inert gases argon and helium, although perfectly
protect the molten weld metal against access of air, are not appropriate for all applications of MIG-MAG welding. By
mixing in the appropriate proportions of helium or argon and a chemically active gas obtained by changing the
nature of metal transfer the arc to increase arc stability and there is possibility to influence on metallurgical
processes in the weld seam. At the same time it is possible to significantly reduce or completely eliminate splash.
protective gas Chemical action welded metal
ar
inert Basically, all metals except for carbon steels
He inert
Al, Cu, Cu alloys, Mg alloys, ensured high heat input welding
20-80% Ar + He inert
Al, Cu alloys, Cu, Mg, there is provided a large heat input welding, low
thermal conductivity gas
25-20% Ar + N
2
25-20% Ar + N
2
reducing
Copper welding with high heat input arc glow better than the arc shield 100% N
2
Copper welding with high heat input arc glow better than the arc shield 100% N
2
Ar + 12% O
2
Ar + 12% O
2
weakly oxidising
Recommended mainly for welding stainless steels and alloy steels
Ar + 3-5% O
2
Ar + 3-5% O
2
oxidising
Recommended for welding carbon steel and low-alloy steel
WHAT
2
WHAT
2
oxidising Recommended only for welding low carbon steel
20-50% Ar + CO
2
20-50% Ar + CO
2
oxidising
Recommended only for welding carbon steel and low-alloy
steel
Ar + 10% CO
2 +
5% O
2
Ar + 10% CO
2 +
5% O
2
Ar + 10% CO
2 +
5% O
2
Ar + 10% CO
2 +
5% O
2
oxidising
Recommended only for welding carbon steel Low-alloy and
opowych
WHAT
2 +
20% O
2
WHAT
2 +
20% O
2
WHAT
2 +
20% O
2
WHAT
2 +
20% O
2
WHAT
2 +
20% O
2
oxidising
Recommended only for welding low carbon steel and low-alloy