entering the cutter shall not be less than 0.3MPa (about 3kg / cm2), and its change range shall be within
±
0.05Mpa. b. The diameter of electrode and nozzle does not match the cutting current.
The matching relationship between cutting current and nozzle is as follows:
Current Range
10-30A
30-40A
60-80A
80-120A
Injector diameter
φ
1.0mm
φ
1.2mm
φ
1.3mm
φ
1.5mm
B.
It is difficult to start arc and easy to break arc:
1. Confirm that the electrode you are using is of good quality. The discharge capacity of poor quality electrode may
not meet the requirements;
2. When the cutting current is too small and the air flow is too large, the arc will break due to the strong cooling
effect.
3. The voltage of the power grid is too low or the primary input line is too long, which leads to the excessive voltage
drop on the line.
C. Output current not up to rated value:
The deviation of the supply voltage from the rated value will cause the output current to be inconsistent with the set
value; the supply voltage is lower than the rated value
The maximum output current of the machine may also be lower than the rated value.
D. The current can't keep stable during the use of cutting machine:
This may be related to the following factors:
1. The grid voltage changes;
2. Serious interference from power grid or other electrical equipment.
E. Electrode or nozzle burned too fast:
1. The current may be too large and the nozzle diameter used is too small;
2. The air pressure is too low to reach the required flow, the cooling effect is weakened, and the nozzle electrode
is overheated.
F. The arc can not completely penetrate the steel plate, or the cut is seriously stuck with slag, so it can not be cut smoothly
1. it is possible that the current of this machine cannot reach the required cutting thickness. Please choose a cutting
power supply with higher current.
2. The electrode or nozzle has been burned and needs to be replaced.
Attention
：
Under normal circumstances, you should start cutting from the edge of the workpiece, so as
to ensure the cutting quality Damage to the cutting gun due to adhesion of spatter.
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Italia Star Com Due S.R.L.
www.italiastar.ro
004/021.433.03.27
31