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Introduction to Shielded Metal Arc Welding

This video explains the differences between alternating current and direct current arc welding machines and shows how an electrical current melts electrodes to supply filler metal. Also demonstrated are electrode leads, workpiece leads, and electrode holders. Electrode sizing and its importance are explained. Set-up and shut-off instructions are shown step-by-step as well as how to use equipment safely. Uses of Shielded Metal Arc Welding are discussed and demonstrated. (12 min.) A Meridian Production.

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Preparation and Equipment Set Up
Arc welding creates toxic gas and both ultraviolet and infrared rays. Electrode safety and protective welder clothing is shown. Differences between alternate and direct current welders are explained.