Flux Residual Activity
Flux residue activity is the remaining corrosive potential of chemical additives after the soldering process. It is determined by specific tests to ensure that components do not continue to corrode.
Physical-Chemical Mechanism of Action
After the soldering process, chemical additives remain in the material. These can still be corrosive and continue to attack or damage the metal.
Metallurgical Relevance & Welding Risks
High flux residue activity can lead to long-term corrosion of components, shortening their service life and compromising safety. This can occur especially in humid environments or under chemical loads.
Workshop Practice & Instructions
Always use a corrosion-inhibiting post-treatment after soldering to reduce residue activity. Regularly check components for corrosion damage using specific test methods (e.g., salt spray test) and adjust soldering processes if necessary.