What can occur if a joint is not properly cleaned before soldering?

If a joint is not properly cleaned before soldering, it can lead to a weak bond. Soldering relies on a clean surface to ensure proper adhesion of the solder to the metals being joined. Oxidation, dirt, grease, or other contaminants on the surfaces can hinder the flow of the solder, preventing it from penetrating the joint effectively. As a result, the bond formed may not be strong enough to withstand stress or pressure, potentially leading to leaks or failures over time.

The importance of cleanliness in this process cannot be overstated, as a strong bond is essential for the integrity and longevity of the piping system. Proper cleaning techniques, such as using a wire brush or abrasive cloth, are crucial in preparing the surfaces for soldering.