Stainless steel surface polishing treatment is a surface treatment method to clean up the oxidized skin and finish of stainless steel products, which is used to remove the harmful substances on the surface. Commonly used methods of stainless steel surface polishing treatment are mechanical polishing, chemical polishing, electrochemical polishing three.
Stainless steel because of its high corrosion resistance and decorative and widely used, stainless steel appliances should be corrosion resistance, bright appearance and cleanliness, the surface of the appliances should not be attached to the human body toxic substances. Therefore, the production of such appliances surface treatment requirements, is to completely remove the surface of the harmful substances.
Stainless steel in thermal processing, mechanical processing or placed for a certain period of time after the surface will form a layer of black or gray oxide skin, its main components are Cr203, Ni0 and very difficult Fe0, Cr203, they will affect the appearance of the quality and performance of the product, and therefore to take appropriate measures to remove.
Stainless steel polishing as a mature surface treatment method, has been widely used, polishing can further improve the corrosion resistance of stainless steel and bright effect.
Methods of stainless steel surface polishing treatment:
1.Mechanical polishing.
Mechanical polishing is to rely on cutting, plastic deformation of the material surface to remove the convex part of the polished surface and get a smooth surface polishing method, generally using oil stone strips, wool wheels, sandpaper, etc., the use of this technology can achieve Ra0.008μm surface roughness, is the highest of the various polishing methods.
2. Chemical polishing.
Chemical polishing is to let the material in the chemical medium of the surface microscopic protruding part of the more concave part of the preferential dissolution, so as to get a smooth surface. The main advantage of this method is that it does not require complex equipment, can be polished complex shape of the workpiece, can be polished at the same time a lot of workpieces, high efficiency. The surface roughness obtained by chemical polishing is generally several 10μm.
3. Electrochemical polishing.
Electrolytic polishing basic principles and chemical polishing, that is, by selective dissolution of the material surface tiny protruding parts, so that the surface is smooth. Compared with chemical polishing, can eliminate the influence of cathodic reaction, the effect is better.