How to polish stainless steel flange?

    In order to improve the corrosion resistance and decorativeness of large stainless steel flanges, it is necessary to polish the surface of stainless steel flanges. Now there are three kinds of polishing and electrochemical polishing of manual, mechanical and chemical.

    The chemical polishing of large stainless steel flanges is achieved by the regular dissolution of the flange surface to achieve a smooth and smooth finish. In the chemical polishing process, the surface of the steel stainless steel flange is continuously formed with a passivation oxide film and an oxide film which is continuously dissolved, and the former is stronger than the latter. Due to the microscopic inconsistency of the surface of the large stainless steel flange, the microscopic convex portion of the surface is preferentially dissolved, and the dissolution rate is greater than the dissolution rate of the concave portion; and the dissolution of the film and the formation of the film are always performed simultaneously, but the rate is different, and the result is The surface roughness of the large stainless steel flange of the steel is leveled to obtain a smooth and shiny surface. Polishing can fill surface pores, scratches and other surface defects, thereby increasing fatigue resistance and corrosion resistance.

    Electrochemical polishing is also called electropolishing. Electropolishing is based on the large stainless steel flange being thrown as the anode and the insoluble metal as the cathode. The two poles are simultaneously immersed in the electrolytic cell, and the direct current is used to generate selective anode dissolution, thereby making the large The surface brightness of the stainless steel flange surface is increased to achieve a mirror effect. The environmentally friendly electropolishing liquid formulation 1, 2 does not use chromic anhydride, and the amount of phosphoric acid is small. This formula reduces pollution emissions.

    The formula completely eliminates the use of phosphoric acid and chromic anhydride, solves the environmental problem of wastewater discharge, and is a new type of pollution-free environmentally-friendly electrochemical polishing agent. The process flow, such as the process, the process conditions are basically the same as the original one, and the polishing effect is also the same. Basically the same, guaranteeing the quality of polishing. In the production process, the surface of the stainless steel is prone to some black scale or microscopic inequality, which affects its use value. Only by reprocessing it such as mechanical polishing, chemical polishing and electropolishing to increase its own value, the following processes are recommended to obtain better results.