What are the common treatment methods for aluminum alloy surface processing parts?

One: The process of cleaning and roughening the metal surface under the impact of high-speed sand flow by sand blasting. This part processing method can make the surface of the workpiece obtain a certain degree of cleanliness and different roughness, improve the mechanical properties of the surface of the workpiece, thereby improve the fatigue resistance of the workpiece, increase its binding force with the coating, and extend the durability of the coating , It is also conducive to the leveling and decoration of the coating. We often see this kind of craftsmanship in various products of Apple, and it is more and more adopted by existing TV casings or middle frames.　　2: Polishing 　　Polishing uses mechanical, chemical or electrochemical methods to reduce the surface roughness of the workpiece to obtain a bright and smooth surface. The polishing process is mainly divided into: mechanical polishing, chemical polishing, and electrolytic polishing. After the parts are mechanically polished and electrolytically polished, they can cling to the stainless steel mirror surface, giving people a high-end, simple, and stylish futuristic sense (of course, fingerprints are easy to leave and easier to care for).　　3: wire drawing 　　 wire drawing is a manufacturing process in which the parts to be processed are repeatedly scraped out of the line with sandpaper. Drawings can be divided into straight line drawing, random line drawing, spiral line drawing and thread drawing. The metal wire drawing process can clearly show every trace of the filament, making the hair shiny in the metal matte. The product has a sense of fashion and technology.　　4: High-gloss cutting 　　 The diamond cutter is reinforced by a high-gloss cutting machine on the spindle of the engraving machine with high-speed rotation (usually 20,000 rpm), cutting parts, and producing local bright spots on the surface of the product. The brightness of the cutting highlights is affected by the speed of the milling cutter. Highlight and highlight cutting are especially suitable for mobile phones such as iPhone 5. In recent years, some high-end TV metal frames have adopted high-gloss milling technology, coupled with anodizing and wire drawing technology, so that the entire TV is full of fashion and sharp sense of technology.　　5: anodic oxidation 　　anodic oxidation refers to the electrochemical oxidation of metals or alloys. Under the corresponding electrolyte and specific process conditions, aluminum and its alloys form an oxide film on the aluminum product (anode) under the action of an external current. Anodizing can not only solve the defects of aluminum surface hardness and wear resistance, but also prolong the service life of aluminum and enhance the aesthetics of aluminum. It has become an indispensable part of processing and is currently the most widely used and most successful technology.　　 Six: Two-color anodic oxidation 　　 Two-color anodic oxidation Two-color anodic oxidation refers to anodizing on the product and giving different colors to specific areas. The two-color anodizing process is complicated and costly, but the contrast of the two colors can better reflect the high-end and unique appearance of the product.