PCBA processing factory is still very necessary forthe PCBA water washing process. After the circuit board undergoes variousprocessing production processes such as SMT chip processing, plug-in, handsoldering, etc., some residues will generally remain on the board. . In thegeneral water washing process, water is used as the cleaning medium. A smallamount of surfactants, corrosion inhibitors and other chemical substances areadded to the water. After washing, the cleaning process is completed by multiplesource and deionized water source washing and drying. .

The advantage of water cleaning is that the cleaningmedium for water cleaning is generally non-toxic, does not endanger the healthof workers, and is not flammable or explosive. Therefore, it has good safety.Water cleaning has particles, rosin flux, water-soluble pollutants and polarpollution Goods have good decontamination effect.

The disadvantage of PCBA processing water washingprocess is that the entire equipment investment is large, which requiresinvestment in pure water or deionized water. In addition, it is not suitablefor non-airtight devices, such as adjustable potentiometers, inductors,switches and other water vapor into the device is not easy to discharge, oreven damage the ring components.

Water washing technology can be divided into twoprocesses: pure water washing and adding surfactant in water. The typical PCBAprocess flow is as follows:

Water + surface activity (washing) → water (washing) → pure water(rinsing) → ultrapure water (rinsing) → hot air (drying).