Loading Limits Dependent On The Plasma Gas Flow Rate; General - Fronius Robacta PTW 500 Instructions De Service

Loading limits dependent on the plasma gas flow
rate

General

Loading limits for plasma welding/plasma brazing depend on the following factors:
-
-
-
The following loading limits apply to the standard tungsten electrode setting (see also
„Adjusting the tungsten electrode").
Loading limits For plasma welding, the values for the plasma gas flow rate and maximum welding
dependent on the current must lie within the set limits. An upper or lower exceed of these limits can change
plasma gas flow the plasma properties, e.g.:
rate -
-
Important! Do not exceed the upper or lower limits set for plasma gas values and max.
welding current during operation.
Important! The minimum coolant flow rate is 1 l/min
This table is only valid for the PTW 500 (electrode diameter 1.0 mm; d.c. 60%):
∅ ∅ ∅ ∅ ∅ Plasma nozzle
0.6 mm
0.8 mm
1 mm
1.2 mm
1.4 mm
1.6 mm
1.8 mm
This table is only valid for the PTW 1500:
∅ ∅ ∅ ∅ ∅ Plasma nozzle
1.5 mm
2.0 mm
2.5 mm
3.0 mm
This table is only valid for the PTW 3500 in conjunction with a FK9000 cooling unit:
Diameter of the plasma nozzle
Position of the tungsten electrode
Plasma gas flow rate
Low plasma gas flow rate ............ „soft" plasma jet
High plasma gas flow rate ........... „hard" plasma jet („plasma cutting")
Plasma gas flow rate
min.0.30 l/min
min.0.30 l/min
min.0.30 l/min
min.0.30 l/min
min.0.30 l/min
min.0.30 l/min
min.0.30 l/min
Plasma gas flow rate
min.0.30 l/min
max.0.80 l/min
min.0.35 l/min
max.1.00 l/min
min.0.45 l/min
max.1.20 l/min
min.0.55 l/min
max.1.30 l/min
14
Max. welding current
15 A
20 A
28 A
35 A
45 A
50 A
50 A
Max. welding current
60 A
100 A
80 A
120 A
110 A
145 A
130 A
150 A