E7018 can be used on AC or DC. The reason you have trouble welding with it on your "buzzbox" type AC Welder, is because it has a very low OCV (open circuit voltage). Check it out on your NAMEPLATE.
If you would have a better AC welder with a higher OCV, it will work just fine.
The E7018 that is sold for use on an AC machine, is more expensive and contains more "arc stabilizers" in the coating. That is why this electrode works better on your AC machine.
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Today's Featured Article - The Ferguson System Principal An implement cutting through the soil at a certain depth say eight inches requires a certain force or draft to pull it. Obviously that draft will increase if the implement runs deeper than eight inches, and decrease if it runs shallower. Why not use that draft fact to control the depth of work automatically? The draft forces are
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