Submerged arc welding is a common arc welding process. The process requires a continuously fed consumable solid or metal cored electrode. The molten weld and the arc zone are protected from atmospheric contamination by being "submerged" under a blanket of granular fusible flux consisting of lime, silica, manganese oxide, calcium flouride, and other compounds. When molten, the flux becomes conductive, and provides a current path between the electrode and the work. This thick layer of flux completely covers the molten metal, preventing spatter and sparks as well as suppressing the intense ultraviolet radiation and fumes.
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