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Step 4"Reverse Polarity" ???
Wirefeed welding steel is done with DC "reverse-polarity".
"Reverse Polarity" in welding parlance means the same as "Electrode Positive".
That means you connect the ground cable from the "-" battery terminal to the workpiece. The gun is connected to the "+" battery terminal.
The confusing name for this polarity happened for historical reasons.
For most welding (stick, the standard) the electrode is negative. That's called "Straight Polarity". They do it that way so most of the heat will go into the weld instead of the electrode.
The electrons have an easy time jumping out of the electrode, but when they jump into the workpiece they have to mill around and get acquainted and find their way around a bit. That makes more heat than just jumping off an electrode.
"Reverse Polarity" in welding parlance means the same as "Electrode Positive".
That means you connect the ground cable from the "-" battery terminal to the workpiece. The gun is connected to the "+" battery terminal.
The confusing name for this polarity happened for historical reasons.
For most welding (stick, the standard) the electrode is negative. That's called "Straight Polarity". They do it that way so most of the heat will go into the weld instead of the electrode.
The electrons have an easy time jumping out of the electrode, but when they jump into the workpiece they have to mill around and get acquainted and find their way around a bit. That makes more heat than just jumping off an electrode.
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