Questions about Welding
Black welding spot
Make sure the valve on the argon cylinder is opened and its pressure is set to the proper range for
the material
you’re working with.
Check torch for blocked passages.
The gas circuit should be air-tight. Air leakage will result in weld contamination
If air is flowing too powerfully in the welding environment, that can also lower weld quality by blowing
away the shielding gas.
Arc-striking is difficult and hard to maintain
Make sure the type of tungsten electrode is correct for your material.
Grind end of the tungsten electrode to taper.
Output current not to rated value
When input current is less than the required amount it will make the output current not match with the
rated value. If there is an issue with the output current of the machine verify it is receiving the proper
input current.
Current is not stabilizing when machine is being operated
Input voltage is unstable or not of the correct value.
There is EMI or RF interference from electrical wiring or other equipment affecting the machine.
Stick is burnt out
Pulse duty is too high, which causes the torch to overheat.
When welding aluminum, cannot break oxidized film
Wrong welding value (Aluminum requires AC)
Pulse duty too low
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