Why should the plating parts be cleaned with clean water from chemically deoiling to weak acid etching?

Why should the plating parts be cleaned with clean water from chemically deoiling to weak acid etching?


Because the usual chemical deoiling solution is alkaline, if the deoiling solution is brought directly into the acid corrosion (micro-etching) solution, the neutralization reaction of the acid and alkali will occur. The concentration and action of acid are reduced, and the product of neutralization reaction adheres to the workpiece, which will affect the quality of the coating. Therefore, the workpiece must be rinsed with clean water after chemical deoiling before it can enter the solution of acid corrosion.