why is your portable cnc plasma cutter torch not working?
According to our experience , the reasons are mainly as follows:
1. Input air pressure too high:
If the input air pressure is greater than 0.45MPa, the excessive air flow after the formation of plasma arc will disperse the concentrated arc column, disperse the energy of the arc column and weaken the cutting strength of plasma arc.
The main reasons for high air pressure are: improper regulation of air compressor, excessive regulation of air filter pressure reducing valve or failure of air filter pressure reducing valve.
Check whether the pressure regulation of the air compressor is properly adjusted, and determine whether the pressure of the air compressor is consistent with that of the air filter pressure reducing valve. During the operation of the air compressor, adjust the regulating switch of the air filter pressure reducing valve. If the barometer does not change, it means that the air filter pressure reducing valve is out of order and should be replaced in time.
2. Input air pressure too low:
When the CNC plasma cutting machine is working, if the input air pressure is far lower than the air pressure required by the equipment, the ejection speed of the plasma arc will be weakened. If the flow of the input air is less than the specified value, it will not be able to form a high-energy and high-speed plasma arc, resulting in the problems of poor cutting quality, impermeable cutting and slag accumulation. The air pressure regulating valve in the compressor is blocked due to insufficient air pressure, insufficient air pressure, etc.
Before cutting, pay attention to check the output pressure display of the air compressor. If it does not meet the requirements, adjust the pressure setting or maintenance of the air compressor. If the input air pressure is required, check whether the pressure regulation of the air filtration pressure reducing valve is correct and whether the pressure display of the barometer can meet the cutting requirements. Otherwise, maintain the air filtration pressure reducing valve to ensure that the input air is dry and free of oil stain. Poor input air quality will cause oil contamination in the solenoid valve, making it difficult to open the valve core and the valve port can not be fully opened.
3. Poor contact of ground wire:
Grounding is an essential preparation for the work of portable cnc plasma cutter . Failure to use special grounding tools, insulation on the surface of the workpiece or aging of the ground wire will lead to poor contact of the ground wire.
Use special grounding tools and check whether the ground wire is in good contact with the workpiece. Do not use aging ground wire.