Gas-shielded flux-cored arc welding (FCAW-G) produces high-quality welds by relying on a continuously-fed tubular wire filled primarily with metallic and metallic-oxide powders. These powders act as a flux during welding to form a protective slag over the completed weld. In addition, the slag removes impurities from the weld pool to generate a discontinuity-free weld even in the presence of light rust, scale or other surface contaminants. The slag of all-position FCAW-G wires supports the molten weld metal, enabling good bead contour and relatively high deposition rates when welding out-of-position.
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