Welding Rod Is Sticking. Stick welders are known to melt and will be able to become a part of the weld. In certain cases namely SMAW and stick welders the wires actually melt becoming part of the weld itself.
Stick welding uses electricity to melt the filler metal rod or the electrode as it is properly referred to. Unlike non-consumable electrodes consumables melt during the welding process. Direct Current Electrode Negative DCEN Polarity.
In short the effect of rust on the weld quality is the main reason why rusty metals require specific welding rods with deeper penetration DCEP settings and higher amperage than normal.
The main reason for sticking is the high current welding rod flow and a higher melting point of the welding rod. Unlike non-consumable electrodes consumables melt during the welding process. If youre welding with amperage set too low your electrode will be especially sticky when striking an arc the arc will keep going out while maintaining the correct arc length or the arc will stutter. Although this could be the MAIN reason others include flux problems using low OCV welders or the incorrect welding technique.