How to Weld Aluminum with an ARC Welder

By Allan Robinson

An arc welder creates an electrical current through an electrode, which melts the metal to form a weld between two work pieces. In some arc welding processes, the metal in the electrode also melts to make the weld. Arc welding machines may produce an alternating current (AC) or direct (DC) current, depending on the specific application. Aluminum is generally harder to weld than steel, and you’ll need to select a welding machine specifically for welding aluminum.

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About the Author

Allan Robinson has written numerous articles for various health and fitness sites. Robinson also has 15 years of experience as a software engineer and has extensive accreditation in software engineering. He holds a bachelor's degree with majors in biology and mathematics.