During the wave soldering process, cross-contamination occurs when flux residue builds on the conveyor fingers. The residue buildup traps dust particles and other contaminants and as a result, the transported boards are contaminated when these particles are transferred onto them.
Additionally, as flux residue buildup on the conveyor fingers increases, it may interfere with and prevent consistent soldering dip. This can lead to poor soldering reliability. Thus, continued cleaning of the conveyor fingers is critical to ensure that solder pallets are properly guided over the wave.
In order to avoid cross-contamination issues, ZESTRON offers aqueous-based maintenance cleaning agents that have no flash point and therefore, unlike commonly used alcohols, can be applied to warm surfaces. This prevents unnecessary machine downtime. Furthermore, for conveyor finger cleaning, these cleaners can be used while the process is running.