What causes the DC argon arc welding machine to interfere with the automatic step motor?
Argon arc welding has high arc impulse
DC tungsten arc welding machine, high frequency arc induced step motor interference.Tungsten arc welding can be turned off with high frequency arc starting, and contact arc ignition is adopted. With carbon or other conductive materials, placed between tungsten electrode and the workpiece, using resistance heat preheating tungsten, then quickly removed carbon, similar to scratch the arc welding arc ignition, normal welding can avoid the high frequency interference, the tungsten loss is smaller.
The stepper motor driver controls the stepper motor by controlling the pulse. If the drive pulse bandwidth is too wide or the wiring is not reasonable, the control pulse will be disturbed. Argon arc welding produces large electromagnetic interference signals at arcing time.
