An electric arc from an AC or DC power supply creates an intense heat of around 6500☏ which melts the metal at the join between two work pieces. If you have any questions or need help, email us to get expert Click here to see our latest technical engineering podcasts on YouTube.Īrc welding is a fusion welding process used to join metals. This article is one of a series of TWI frequently asked questions (FAQs). A power supply creates an electric arc between a consumable or non-consumable electrode and the base material using either direct (DC) or alternating (AC) currents.
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