How to treat the surface of the filter

Speaking of etching filters, there may be many friends who don’t know much about it. In fact, this etching filter product is often used in our lives. Here I will list one of the most common life examples for everyone, the small orifice plate in the teapot. The filter screen is the specific application of the etching process. You will find that the appearance of the product is very bright, so how are these surfaces processed? I will briefly introduce you here today.

The reason why the etched filter is named is mainly because of this special production process. The stainless steel plate is chemically etched to obtain the ideal pattern or mesh technology. It has: the mesh is round, the arrangement is uniform, and the filtering effect is uniform. In addition to the wide application of etched filters in the filtration industry, the electronics industry also uses this process for data.

Design and complex cylindrical shape to process concave and convex metal FAG bearing products. It is widely used in integrated circuit printing, phosphor screen electronic grid, precision filtration, microelectrode components, etc. No matter what industry it is used in, the surface of the etching mesh is always special There are mainly three ways of surface treatment.

The natural color of the surface is whitened; during the processing of precision etched products, black oxide scale is produced after coiling, binding, welding or artificial surface fire heating treatment. This hard gray-black oxide scale is mainly NiCr2O4 and NiF. This kind of EO4 component was generally removed by strong corrosive methods with hydrofluoric acid and nitric acid in the past. However, this method is costly, pollutes the environment, is harmful to the human body, and is highly corrosive, and is gradually eliminated.

Surface mirror bright treatment; according to the complexity of precision etching products and user requirements, mechanical polishing, chemical polishing, electrochemical polishing and other methods can be used to achieve mirror gloss. This is the most used surface treatment method.

In addition to the brightness of the surface, surface coloring treatment can also be performed. The coloring of precision etching products not only gives various colors to precision etching products, increases the variety of patterns of precision etching products, but also improves the wear resistance and corrosion resistance of the products. It is mostly used for making exquisite products. Artwork, household items, decorations.