When the working gas pressure of the CNC plasma cutting machine is higher than 0.45MPa, we judge that the cutting auxiliary pressure is too high. Then after the plasma cutting mechanism forms the ion arc, the excessive air flow will blow away the concentrated arc column, so that the energy of the arc column can be relaxed, and the cutting strength of the plasma arc will be weakened. Excessive air pressure can be caused by: Improper adjustment of input air, over-adjustment of the air filter relief valve, or loss of the air filter relief valve. In this case, the operator needs to check whether the air compressor is adjusted correctly, and whether the pressure of the air compressor and the air filter pressure reducing valve is out of balance.
If the input air quality is poor, it will cause oil pollution inside the solenoid valve, the valve core will be difficult to open, and the valve port will not be fully opened. Something else. The air pressure of the cutting nozzle is too low, and the solenoid valve needs to be replaced; the small air section will also make the air pressure too low, so the air pipe can be replaced according to the requirements of the statement.
In addition, when the CNC plasma cutting machine is working, if the working air pressure is far lower than the air pressure required in the manual, it means that the injection speed of the plasma arc is weakened. Reasons for insufficient air pressure include: insufficient air input from the air compressor, too low pressure adjustment of the air conditioning valve switch, oily solenoid valve, and blocked air path. The solution is to investigate the output pressure of the air compressor before use, and adjust it if it does not meet the requirements.