why is the plasma cutting machine torch not arcing?

 why is the torch of plasma cutting machine not arcing? Or why is your plasma cutter torch not working?

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.

Solution: 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. Type air pressure too low:

When the plasma cutting machine of CNC machine tool is working, if the air pressure entered is far less than the air pressure specified by the machine and equipment, the ejection rate of plasma arc will become weak. If the total flow of air entered is lower than the standard value, it will not be able to produce ion arc with high efficiency and high speed, which will lead to the problems of poor wound quality, impermeability and slag deposition.

Solution: Before laser cutting, we should pay attention to Qingdao plasma cutting machine, query the output pressure of the air compressor, and indicate that if it does not meet the regulations, we should adjust the pressure setting or maintenance of the air compressor. If the air pressure regulation is entered, check whether the pressure adjustment of the air filter pressure reducing valve is appropriate at this time, and the pressure of the barometer indicates whether it can meet the laser cutting regulation. Otherwise, solve the maintenance of the air filter pressure reducing valve to ensure that the air is dry and impetuous and free of oil stains.

3. Poor contact of ground wire plasma cutting machine:

Grounding device is an indispensable part of CNC machine tool cutting machine, and the preparation of  plasma cutting machine. Failure to apply special tools for professional grounding devices, insulation on the surface of product workpieces or ground wire embrittlement will cause poor ground wire contact.

Solution: Apply professional grounding device special tools and check whether the contact between the ground wire and the product workpiece is excellent. It is not necessary to apply brittle ground wire.

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