How to Judge the Quality After the PCB Salt Spray Test is Completed
January 18, 2022
Salt spray corrosion(Salt Mist Test Chamber) is a common and destructive atmospheric corrosion, especially for PCB boards used in marine and saline-alkali environments, the verification of salt spray corrosion is particularly important.
1. Rating method
After the salt spray test of the three anti-paint of the PCB board is completed, the salt crystals on the surface of the PCB board are washed with flowing water, and the corrosion degree of the product surface is carefully observed with the naked eye in a well-lit environment.(Salt Mist Test Chamber)
2. Appearance inspection
A layer of white salt crystals will be precipitated on the surface of the three-proof paint of the PCB board after the salt spray test, and it will disappear naturally after washing with water.
At this time, observe carefully and compare it with the standard sample. If the paint film on the surface of the PCB board is smooth and flat , no damage, wrinkling and other surface defects, the product can be judged qualified.(Salt Mist Test Chamber)