With the progress of the times and the development of various transportation tools, such as airplanes, ships, automobiles and even household products, office furniture all use aluminum shells. Die Cast Aluminum Enclosures are widely used in many fields and are closely related to people's lives. However, many Die Cast Aluminum Enclosures are oxidized and lose their luster every year, so they need to be polished at this time.

Die Cast Aluminum Enclosures are prone to internal pores, shrinkage cavities, pores and other defects during the casting process. After processing, the surface dense layer of these defective castings is partially removed, and the internal structural defects are exposed. Used for automotive aluminum shells with sealing requirements, such as cylinder blocks, cylinder heads, intake manifolds, brake valve bodies, etc. In the pressure sealing test, the existence of defective micropores will cause the leakage of the sealing medium, resulting in a large number of waste products, and these defects are often found after machining and pressure test, causing serious work hours, raw materials and energy fluctuation.

Polishing is only one of the various surface processes of Die Cast Aluminum Enclosures, but it is an important process to improve the quality of Die Cast Aluminum Enclosures. Mastering a reasonable polishing method can improve the quality and performance of Die Cast Aluminum Enclosures, thereby improving the quality of aluminum alloy die-casting products.

In addition to conventional mechanical polishing and chemical polishing, there are also electrolytic polishing, ultrasonic polishing, fluid polishing, magnetic abrasive polishing, dielectric EDM ultrasonic composite polishing and other technologies. Among them, the basic principle of Die Cast Aluminum Enclosures electrolytic polishing is the same as that of chemical polishing. It mainly relies on the selective dissolution of tiny protrusions on the surface of the material to make the surface smooth. Compared with chemical polishing, it can eliminate the influence of cathode reaction, and the effect is better.