Electrochemical etching liquid and etching method

Abstract

An electrochemical etching solution is an aqueous solution containing sulfuric acid and phosphoric acid, wherein the etching solution also contains a surfactant. The electrochemical etching solution and the etching method provided by the invention can greatly increase the etching speed and reduce the occurrence of side etching phenomenon.

Description

technical field [0001] The invention relates to an etching solution and an etching method, in particular to an electrochemical etching solution and an etching method. Background technique [0002] The principle of etching is to quickly dissolve and remove unwanted metals by using chemical solutions to corrode metals. The basic process of etching is to take the required pictures and make negatives, then expose them to ultraviolet radiation on the exposure table, print the pattern on the screen coated with photosensitive material, and then print the pattern on the metal surface by screen printing method. Selective corrosion is carried out with etching solution, and after removing the film, anodizing, cleaning, and drying, the metal material with graphics and text on the surface can be obtained, and a protective film can be further sprayed on the metal surface as required. This etching method is widely used in the treatment of metal surfaces in manufacturing and decoration ind...

AI Technical Summary

Problems solved by technology

There is no harm to the environment and operators in this method, but the etching speed of this method is still relatively slow, and the efficiency is low during industrialized mass production, and when etching with this etching solution, it is difficult to perform etching for aluminum plates with less thickness. The side erosion phenomenon is small during etching, but as the thickness of the aluminum plate increases, the side erosion phenomenon also becomes more serious

Therefore, it is more difficult to deal with thicker aluminum materials, and the effect is not good.