Which polarity does E6010 require for welding?

Which polarity does E6010 require for welding?

• A. AC
• B. DC reverse polarity only
• C. DC straight polarity only
• D. DC reverse polarity or straight polarity

Answer: (B)

Polarity determines how heat is split between the electrode and the workpiece, which in turn affects penetration and arc stability. E6010 is a cellulosic, flux-coated electrode designed to achieve deep, narrow penetration and a stable arc, and it does this best when the electrode is positive (reverse polarity) in direct current. This setup concentrates heat into the base metal, giving the deep root penetration E6010 is known for, and it also aids slag control for root passes on carbon steels. Using alternating current or direct current with the electrode negative (straight polarity) would not provide the same penetration or arc stability for this electrode, so the recommended arrangement is DC with the electrode positive.

Polarity determines how heat is split between the electrode and the workpiece, which in turn affects penetration and arc stability. E6010 is a cellulosic, flux-coated electrode designed to achieve deep, narrow penetration and a stable arc, and it does this best when the electrode is positive (reverse polarity) in direct current. This setup concentrates heat into the base metal, giving the deep root penetration E6010 is known for, and it also aids slag control for root passes on carbon steels. Using alternating current or direct current with the electrode negative (straight polarity) would not provide the same penetration or arc stability for this electrode, so the recommended arrangement is DC with the electrode positive.