How is the filter surface treated
Speaking of the etched filter, many friends may not have a special understanding. In fact, this etched filter product is often used in our lives. Here I will give you a list of the most common examples of life. The small orifice plate in the teapot The filter 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? Today, I will briefly introduce you here.
The reason for the name of the etched filter mesh is mainly because of this special production process. The stainless steel sheet is obtained by the chemical etching method of the ideal pattern or mesh technology. It has: round mesh, uniform arrangement, and uniform filtering effect In addition to being widely used in the filtration industry, the etched filter mesh also uses this process for data in the electronics industry.
Design and complex column shape to process concave and convex metal FAG bearing products. It is widely used in integrated circuit printing, fluorescent screen electronic grid, precision filtration, micro-electrode components, etc. No matter what industry it is used in, the etched mesh surface is always special The brightness of the main surface treatment is mainly in the following three ways.
Natural whitening of the surface; during the processing of precision etching products, after rolling, edging, welding or artificial surface fire baking and heating treatment, black oxide scale is produced. This hard gray-black oxide scale is mainly NiCr2O4 and NiF This kind of EO4 component was generally removed by the strong corrosion method of hydrofluoric acid and nitric acid. However, this method has a large cost, pollutes the environment, is harmful to the human body, and is more corrosive, and is gradually being eliminated.
Surface mirror surface 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 can also be carried out. The coloring of precision etching products not only gives various colors to precision etching products, increases the variety of precision etching products, but also improves the wear resistance and corrosion resistance of products. Artwork, household items, decorations.