High frequency automatic discharge of argon arc welding machine?
Look at what you are saying, not just the high frequency automatic discharge, but finishing the welding machine in the working state, which is equivalent to press the gun switch. Try to switch the gun off the boat socket. If it is not good, check the boot part on the circuit board. Normally, the relay is switched on before it is activated. See if the relay is out of order. The gas output section depends on whether there is a voltage to the solenoid valve. Some words is that the solenoid valve is broken, there is no circuit board is broken.
First make sure there are no high-voltage ignition sound, then check the contact switch and the contact line not is good, then check the high-voltage circuit, see high voltage capacitor capacity, there is a high frequency inductors have a great relationship, have a lot of argon arc welding machine is the case, the largest Wuxi welder.Replace the gas or electric connector or a quick connection.Try to transfer the discharge nozzle a little further. The tungsten electrode 0.5CM switch has no high frequency arcing when it is switched on. If there is no arc ignition circuit, there is a fault.Switch line may have broken place, you can unplug the switch, and even with a flat screwdriver, see, OK, and there is listen to there is no electromagnetic valve pull sound.
The high frequency arc striking circuit automatically closes and disconnects the high voltage arc striking circuit under the control of the current variation induction circuit. The capacitor is discharged by a thyristor to a coil, because the discharge current is large and the time is short, and the magnetic field is very large