In SMAW, what does the filler electrode provide?

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Multiple Choice

In SMAW, what does the filler electrode provide?

Explanation:
In SMAW, the filler electrode is a coated, consumable rod. As the arc forms, the metal from the tip melts and becomes the filler metal that fills the joint. The flux coating around the electrode burns away and decomposes to produce shielding gas and slag, which protect the molten weld pool from atmospheric contamination and help control the weld as it solidifies. The shielding gas/slag is what prevents oxidation and porosity, while the electrode itself supplies the added material. The power source provides the current, but the electrode’s primary role related to the question is to supply consumable filler metal and flux for shielding.

In SMAW, the filler electrode is a coated, consumable rod. As the arc forms, the metal from the tip melts and becomes the filler metal that fills the joint. The flux coating around the electrode burns away and decomposes to produce shielding gas and slag, which protect the molten weld pool from atmospheric contamination and help control the weld as it solidifies. The shielding gas/slag is what prevents oxidation and porosity, while the electrode itself supplies the added material. The power source provides the current, but the electrode’s primary role related to the question is to supply consumable filler metal and flux for shielding.

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