The application of stainless steel is very wide, many home furnishings are made of stainless steel, stainless steel has a long service life, and is not easy to leave scratches, the production of cabinet countertops is a very good choice. But stainless steel must be polished in order to have a good visual effect, after polishing the surface of stainless steel smooth and shiny. At present, there are many ways to polish stainless steel, the effect of polishing is also very good. Generally are chemical polishing or electrochemical polishing, the following is a detailed description of the two methods.
Chemical polishing
Chemical polishing is a commonly used surface treatment process for stainless steel, compared with the electrochemical polishing process, its biggest advantage is that it does not require a DC power supply and special fixtures, and it can polish complex shaped parts with a high productivity. In terms of functionality, chemical polishing in addition to physical and chemical cleanliness of the surface, but also remove the mechanical damage layer and stress layer on the surface of the stainless steel, to get a mechanical cleanliness of the surface, which is conducive to preventing localized corrosion of the parts, improve mechanical strength, and extend the service life of the parts. The basic composition of chemical polishing solution includes corrosive agent, oxidizer and water. The corrosive agent is the main component, if the stainless steel in the solution is dissolved, polishing can not be carried out. Oxidizers and additives can inhibit the process, so that the reaction in the direction of polishing is favorable.
Electrochemical polishing
Electrolytic polishing of stainless steel is to hang stainless steel products on the anode, in the electrolytic polishing solution in the anodic electrolytic processing. Electrolytic polishing is a special anodic process, in the whole anodic electrolytic polishing process, the surface of stainless steel products at the same time, two contradictory processes, that is, the continuous generation and dissolution of the oxide film on the metal surface.
Precautions:
The grinding operation with sandpaper or abrasive belts is basically an abrasive cutting operation, leaving very fine lines on the surface of the steel plate. Trouble has been experienced with aluminum oxide as an abrasive, partly due to pressure problems.
Any abrasive parts of the equipment, such as abrasive belts and wheels, should never be used on other non-stainless steel materials before use. This is because it will contaminate the stainless steel surface. In order to ensure the consistency of the surface finish, new grinding wheels or belts should first be tried on scrap of the same composition so that the same products can be compared.
The above introduction is currently the most commonly used stainless steel polishing methods, chemical polishing is generally used for surface treatment of stainless steel, can polish very complex parts, and the efficiency is also very high, generally with the help of chemicals. Polishing has a great impact on the effect of stainless steel, if the effect of polishing is not good, it will directly affect the performance of the use of electrochemical polishing is the use of the principle of pitting to carry out, the effect is also very good. Generally according to the use and shape of stainless steel to choose the method of polishing.
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