What is the function of flux in soldering?

The function of flux in soldering is to promote soldering between metal parts. Flux serves several essential roles in the soldering process. Firstly, it cleans the surfaces of the metals by removing oxidation and other impurities, which can hinder the flow of solder and the formation of a strong bond. Additionally, flux helps to create a favorable environment for the solder to adhere to the metal surfaces by preventing further oxidation during the heating process. This allows for better wetting of the solder to the metal, leading to a more reliable and durable connection once the solder cools and solidifies. Ultimately, the presence of flux is crucial for achieving high-quality joints in soldering tasks.