Argon arc welding machine does not arc, ground wire, welding torch is normal, what's the matter?
Shut down, use multimeter diode to block test output, correct reverse value, if 0, the two side output rectifier short circuit, disassemble the rectifier group connection board to measure each diode, find out the damaged replacement. If the positive and negative values are large, the output inductor is broken open, which needs to be maintained as usual, and the damage or ablation of the common coil joint is more common, or replaced or re wound.The above two situations are the welding machine has the high frequency not to have the arc common reason.
Scratch, arc, can normal welding?Not repairCan increase the discharge gap.
1: welding current is too small. Increase the welding current.2, the tungsten electrode burns badly, and the tungsten electrode is seriously oxidized, which leads to high resistance and difficult to arc. Regrinding tungsten electrode can be done.3, high frequency plate, high frequency ignition, discharge electrode burning, or serious oxidation, resulting in weak discharge. Use fine sandpaper to polish the electrode and replace the new electrode when necessary.4: welding machine in the high-frequency version of aging or damage. Check and trouble shooting, replace high frequency board when necessary.
