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9 CUTTING SPECIFICATIONS
In plasma cutting, the thickness of the material to be cut, the speed of cutting and the current supplied by the generator have
values which are related to each other; these depend on the type and quality of the material, type of torch as well as the type and
condition of the electrode and nozzle, distance between nozzle and piece, pressure and impurity of the compressed air, cut quality
required, temperature of the piece to be cut, etc.
In the diagrams we can see that the thickness to be cut is inversely proportional to the cutting speed, and that both these values
can be increased with an increase in current.
I2
Thickness
(A)
(mm)
1.0
1.5
2.0
3.0
20
4.0
6.0
8.0
10.0
1.0
1.5
2.0
3.0
4.0
30
6.0
8.0
10.0
12.0
15.0
20.0
1.0
1.5
2.0
3.0
4.0
6.0
40
8.0
10.0
12.0
15.0
20.0
25.0
Maximum speed of cutting (mm/min)
Carbon
Stainless
steels
steels
4200
2900
3200
2250
2500
1700
1250
1000
850
700
350
300
190
180
100
60
10000
10000
5800
4600
3700
3200
2500
1900
1500
1200
820
700
500
420
370
310
270
210
170
110
80
-
12600
12600
9400
9600
6300
5200
4000
2650
2500
2000
1400
1200
950
750
560
530
450
370
280
210
110
90
60
-
Speed for quality cut (mm/min)
Carbon
Aluminum
steels
5750
3550
2900
2600
2100
1950
850
950
450
600
350
240
150
120
-
60
12000
8500
6700
4800
3900
2950
2000
1950
1200
1150
630
600
300
360
250
260
180
190
90
110
-
50
15800
10700
11000
7800
5700
5100
3200
3150
2100
1900
1350
1050
640
650
350
390
270
310
190
180
70
70
-
40
Stainless
Aluminum
steels
2450
4850
1800
2350
1300
1650
750
600
500
300
210
240
120
100
30
-
8500
10200
3800
5500
2550
3150
1500
1550
900
900
500
450
300
210
220
170
140
120
70
60
-
-
10700
13400
7950
9100
4200
4600
2050
2500
1500
1600
900
1000
540
460
370
240
250
190
140
120
50
40
-
-
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