Electro polishing is a method of finishing metal surfaces. It is a process in which a metal product suspended in an electrolytic cell is used as an anode, electrolyzed under specific conditions, and the surface of the product is eliminated by dissolving the anode metal to give it a mirror-like glossy appearance.
This method is commonly used to improve the surface finish of aluminum and its alloys, carbon steel, stainless steel, and other non-ferrous metals to meet the needs of certain component working conditions (such as the need to reduce the surface friction coefficient, require precise tolerances, etc.) and improve Decorative appearance of metal products.
Electro polishing can also remove certain mechanical damage on metal surfaces. Compared with mechanical polishing, there is no stress on the surface after electropolishing. However, too rough a surface is not suitable for direct electropolishing.