1. Etching is precisely the use of chemical methods to remove unwanted metal at a certain depth. Etching methods of metal paintings, crafts and wisps of art earn a lot of foreign exchange, corrosion processing has formed a new industry.

2. The general process of etching processing skills (1) Classification of etching processing skills

Etching process

A. Chemical corrosion processing

B. Electrolytic etching

(2) The usual process flow of chemical etching processing pre-etching → Etching → Water washing → Acid leaching → Water washing → Anti-corrosion film → Water washing → Dull

(3) The usual process flow of electrolytic etching into o→ Open power supply → Etching → Water washing → Acid leaching → Water washing → Anti-corrosion film → Water washing → Dull

3. Several methods of chemical etching processing to wait for application

(1) Static etching processing

The plate or part to be etched is immersed in the etching solution, taken out after the etching is a certain depth, washed, and then entered the next process. This method is only suitable for a small number of test objects or laboratory applications.

(2) Dynamic etching processing

A. Bubbling type (also known as blowing type), that is, the etching liquid in the container is etched by mixing air with bubbling (blowing).

B. Splash, a method of etching in a container by splashing the etching solution on the surface of the etched processing object.

C. Spray type, using a certain pressure to spray the etching liquid on the surface of the etched object for etching processing