21
Plasma gas Composition DIN EN 439 COR Gas min.
Ar He H
I1 100 % Ar 100 - - I1 1.76 0.2 l
I3 Ar 50 % He 50 50 - I3 3.78 0.3 l
I3 Ar 15 % He 85 15 - I3 1.94 0.4 l
I3 Ar 25 % He 75 25 - I3 2.70 0.2 l
I3 Ar 30 % He 70 30 - I3 2.72 0.2 l
I3 Ar +75 % He 25 75 - I3 5.98 0.4 l
Varigon He 10 90 - I3 8.35 0.5 l
Varigon H2 98 - 2 R1 1.79 0.2 l
Varigon H3 97 - 3 R1 1.77 0.2 l
Varigon H5 95 - 5 R1 1.75 0.2 l
Varigon H7.5 92.5 - 7.5 R1 1.72 0.2 l
The correction factor takes account of the lowest gas volume than can be set „Gas
min.“. This volume depends on the plasma gas mixture that is being used.
Correction fac-
tors
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