Air pressure of plasma cutting
1. The air pressure is too low
Plasma cutting machine work, such as the working air pressure is far lower than the air pressure required by the instruction manual, which means that the plasma arc equip speed is reduced, the input air flow is less than the specified value, at this time can not form a high-energy, high-speed plasma arc, resulting in poor cut quality, impermeable, indipation tumor phenomenon. The reasons for the lack of air pressure are: air compressor input air is insufficient, cutting machine air conditioning valve pressure is too low, solenoid valve oil pollution, air flow is not smooth and so on.
2. The air pressure is too high
If the input air pressure is much higher than 0.45MPa, after the formation of the plasma arc, the large air flow will blow away the concentrated arc column, so that the arc column energy dispersion, reducing the cutting strength of the plasma arc. Causes of excessive air pressure are: improper input air regulation, air filtration pressure relief valve regulation is too high, or air filtration relief valve failure. The solution is to check that the air compressor pressure is adjusted properly and that the pressure of the air compressor and air filtration relief valve is not correct. After powering on, such as rotating air filter relief valve adjustment switch, table pressure does not change, indicating that the air filter relief valve failure, need to be replaced.
