What does the term "flux" refer to in welding?

The term "flux" in welding refers specifically to a component that plays a crucial role in the welding process by removing impurities from the weld. Flux is often used in various welding methods, such as shielded metal arc welding (SMAW) or flux-cored arc welding (FCAW). It helps to protect the weld pool from atmospheric contamination and facilitates the flow of the molten filler metal. Additionally, flux can assist in preventing oxidation and improving the quality of the weld by ensuring better adhesion between the materials being fused.

This understanding of flux is important for welders as it contributes significantly to producing clean and strong welds. Knowing how flux functions can guide welders in selecting the right type of flux for specific applications, which ultimately affects the integrity and durability of the final weld.