Lanse said: (quoted from post at 15:33:44 03/06/11) Kind of... There are rods that will run on AC/DC and just on DC. To my knowledge, there are no rods that just run on AC only, but there might be some for exotic metals, etc out there. They must not be very common though.
Of the AC/DC rods, all will run smoother on DC, and get more penetration with a nicer arc, less splatter, easier starts, and no arc-outtages.
6010 is a deep digging electrode that burns through a lot of paint/rust/etc, but only runs on DC.
6011 is the AC version of 6010, same rod but with arc stabilizers for AC current. It doesn't get quite as much penetration, and runs a little differently, and can also be used on DC.
7018 can be run on AC or DC, but I'm told that theres a 7018AC version, that runs better on AC than regular 7018. I have never used that, though...
Most other DC rods (6013, 7014, etc) will also run on AC. I hope that this answers your question...
Lanse nice to see you posting again. Very good explanation on the welding rods. As you clearly pointed out 6010 is really the only common rod that can not be run with AC power and 6011 is the suitable AC substitute for 6010. If you master good welds with the AC handicap then from everything I hear then you will find DC a breeze as it is supposedly much easier. (I only have AC-225 power too, but I am a total hack of a welder. My welds are ugly but they do not fail. I would be proud if my welds looked as good as yours).
The 7018AC versions are the best choice for the AC buzzboxes but really are the best choice for any of the smaller buzz-box type welders even if it has DC capability (e.g. Lincoln AC225/DC125, Hobart Stickmate 235AC/160DC, or any of the cheapie grade of DC only Inverter based welders). Many welders run the 7018AC version in DC mode on their buzzboxes simply for the slightly easier restrikes - buzzboxes typically have lower OCV voltages as compared to bigger industrial rated welders. That said, I do not fool with any 7018 simply due to the rod oven storage requirements of it or alternatively my projects are never large enough to justify going and buying a brand new sealed box of rod each time I want to weld and then discarding what I do not use so I do not fool with any version of 7018.
This post was edited by rankrank1 at 10:11:58 03/06/11 2 times.
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