If the user sets too low gas pressure of the CNC cutting saw, the spouting velocity of ion arc of the CNC plasma cutting saw will be weakened during operation, and then the input air flow will be less than the specified value, which will lead to a failure to form the high-energy and high-speed plasma arc, thus causing a poor insufficient cutting quality and nodules. In that case, the insufficient gas pressure of CNC cutting saw is a consequence of insufficient input air pressure to air compressor is insufficient, too low air regulating valve, oil stain in the electromagnetic valve, and unblocked air channel. For that purpose, we require the personnel operating the CNC cutting saw to observe the output pressure display of the air compressor before use, and adjust it in time (if any inconformity) to save raw materials and time.
In addition, when the working gas pressure of CNC cutting saw is higher than 0.45MPa, the cutting auxiliary air pressure will be considered as too high, then after the CNC cutting saw forms an ion arc, the excessive air flow will blow away the concentrated arc column, disperse the arc column energy, and weaken the cutting strength of plasma arc. Reasons for the excessive pressure are: Improper conditioning of input air, too high air filter pressure relief valve or failure of the air filter pressure relief valve. For that purpose, we require the personnel operating the machine to check whether the air compressor is properly adjusted, and whether pressure in the air compressor is inconsistent with that of the air filter pressure relief valve. After startup, if the adjustment switch of air filter pressure relief valve is turned, the indication has no change, it means that the air filter pressure relief valve is malfunctioning, the pressure relief valve or the air compressor shall be replaced. If the input air pressure has reached the required level, it is necessary to check whether the air filter pressure relief valve has been adjusted correctly, and whether the gauge pressure display can meet the cutting requirements. Or the routine maintenance shall be carried out on the air filter pressure relief valve to ensure that the input air is dry and dirty. If the input air quality is poor, oil stain will occur in the solenoid valve, which will lead a blocked valve core, and failure to completely open the valve port. In addition, if the pressure is too low at the cutting torch nozzle, the solenoid valve should also be replaced; The smaller cross-section of air channel will also lead to a too low air pressure, and the air tube can be replaced as required in the instructions.
An abnormal frequency converter is a common problem in CNC cutting saw, which is mainly resulted from two circumstances in general: Firstly, the cutting saw chain gets stuck for long-term use, which leads to an excessive output incurred on the frequency converter, which causes abnormality; Secondly, the saw blade motor of cutting saw has a problem, and in this case, the motor can be detected to remove the fault. A customer should be familiar with such common problems, so that you can carry out a simple troubleshooting based on the fault phenomenon upon the occurrence of any common problem, and take corresponding treatment method according to the problem, and then recover the normal operation of cutting saw quickly.
