Aluminum casings are widely used in many fields, can be seen everywhere in life, and are closely related to people's lives. Polishing is only one of the various surface processes of aluminum casings, but it is an important process to improve the quality of aluminum casings. Mastering a reasonable polishing method can improve the quality and performance of aluminum casings, and then improve the quality of aluminum casing die-casting products.

During the casting process of the aluminum casing, defects such as pores and shrinkage holes are prone to occur inside. After machining, the surface dense layer of these defective castings is partially removed, and the internal structural defects are exposed. When used for sealing requirements, the existence of defective micropores will lead to leakage of sealing media, resulting in a large number of waste products, and these defects are often found after machining and pressure tests, resulting in serious fluctuations in working hours, raw materials and energy.

Grinding and polishing include mechanical polishing, chemical polishing, electrolytic polishing, ultrasonic polishing, fluid polishing, magnetic grinding and polishing, dielectric electric spark ultrasonic composite polishing and other technologies. Among them, the basic principle of electrolytic polishing of aluminum casing is the same as that of chemical polishing, which mainly relies on selectively dissolving the tiny protrusions on the surface of the material to make the surface smooth. Compared with chemical polishing, the effect of cathodic reaction can be eliminated, and the effect is better.

Ultrasonic polishing of aluminum shell is a processing method that uses the ultrasonic vibration of the tool section to polish brittle and hard materials with abrasive suspension. Put the workpiece into the abrasive suspension, and put it into the ultrasonic field together, and grind and polish the abrasive on the surface of the workpiece through ultrasonic oscillation.

The fluid polishing technology of aluminum casing needs to rely on the flowing liquid and the abrasive particles it carries to clean the surface of the workpiece to achieve the purpose of polishing. Hydraulic grinding is hydraulically driven, and the medium is mainly composed of special compounds and abrasives with good fluidity under low pressure, which can be made of silicon carbide powder.

Magnetic abrasive polishing uses magnetic abrasives to form abrasive brushes under the action of a magnetic field to grind workpieces. The method has high processing efficiency, good quality and easy control of processing conditions. Select the appropriate abrasive, the surface roughness can reach ra0.1μm.

From the above, we can know that the aluminum shell polishing technology makes the surface of the aluminum shell smooth, the quality of the product is improved, and the effect is better. Chaohua Hardware has advanced hardware processing equipment, which can meet various process requirements and can support customization of various sheet metals. parts, aluminum alloy parts, hardware accessories and differentiated customization, to give you better products.