Metal chemical etching process four steps

Industrial metal chemical corrosion processing usually need to involve the following four steps:

(1) cleaning treatment: will need to corrode the material on the blank for surface treatment, clear all kinds of stains, oil stains, keep the surface clean, mainly according to the type of metal material and the degree of contamination on the surface of the material were selected to ensure that the corrosion inhibition layer can be uniform and consistent with the adhesion of the metal surface and make the etching speed uniform and unchanged. Usually use organic solvent cleaning, alkaline chemical and acidic cleaning, ultrasonic and spot cleaning treatment.

(2) anti-corrosion treatment: through the photographic ink to protect the surface of those who do not need corrosion processing, so that the need for corrosion processing of the metal surface is completely exposed, and by the corrosive agent compatible with the metal material corrosion. Anti-corrosive material that photographic ink to adhere firmly to the metal surface, and in the entire corrosion process will not occur in the corrosion layer off phenomenon.

(3) corrosion processing: process control: corrosive concentration, corrosion temperature, etching time, etc., the corroded metal material according to the drawings required to produce a good anti-corrosion graphic, put into the corrosion tank for etching process.

(4) remove the anti-corrosion layer: etching process is completed, through the solvent, lye or other cleaners will be parts of the surface of the film on the anti-corrosion layer to remove.