Posted by Hank ABAB on January 10, 2016 at 18:50:46 from (137.186.245.21):
In Reply to: Re: DC Welding posted by old on January 10, 2016 at 17:54:28:
If you have a good welding machine that is rated at around 70 OCV (Open Circuit Volts), you can use ordinary E7018 electrodes all day long (even on AC). The E7018AC electrodes are more expensive, and are designed to work better on a machine with a low OCV.
If you buy a cheap machine, that is exactly what you get. Check the tag on your welding machines to see what the Max OCV is.
In the attached photo, you may be able to read the OCV on the tag on my Miller DIALARC 250 AC/DC (70 or 71, depending if on AC or DC). This site may shrink the photo too much though.
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