Soaking or spraying appropriate acidic solvents on metal can cause it to corrode. If you first use acid-resistant substances to shield and protect the local metal and then soak it in acidic solvents, you can only partially remove the metal surface and get the result we designed in advance. Pattern, this is the general etching practice.
Metal etching production process
Etching is widely used in the production of copper circuits on circuit boards, and in the application of general products, it is mainly used to decorate the appearance of metal sheets. Textured metal can often be seen on elevator wall panels or building decoration panels, which are etched from stainless steel plates. In general consumer products, it is easier to see the application of aluminum alloy etching. Patterns or text logos on aluminum plates are often produced by etching. In addition, etching is often used to make various metal meshes, such as metal filters in fruit and vegetable machines, speaker meshes for electronic products, or modified etched sheets used by model players to make aircraft and ship models.
Aluminum alloy plate etching and anodizing
Stainless steel etched mesh, used for speaker sound holes. The interesting thing about etching is that it can be etched multiple times on the same piece of metal material, and can be combined with anodizing or PVD (physical vapor deposition) to produce multiple layers or patterns with contrasting colors. Another feature of etching is that it can make extremely fine patterns or cutting penetrations (generally speaking, the minimum wire diameter of the etching process is about 0.01-0.03mm, the minimum opening hole diameter is about 0.01-0.03mm, and the process tolerance is the highest Can reach ±0.01mm).