What are the processing techniques of aluminum alloys

1. Sandblasting

Uses the impact of high-speed sand flow to clean and roughen metal surfaces. The aluminum surface treatment of this method can make the surface of the workpiece obtain a certain degree of cleanliness and different roughness, improve the mechanical properties of the workpiece surface, thereby improve the fatigue resistance of the workpiece, increase its adhesion to the coating, and prolong the coating life. Durability, good for leveling and decoration of coatings. We often see aluminum alloy technology in Apple’s various products, and it is increasingly used in existing TV covers or mid-frames. 

2.Second, polishing 

Using mechanical, chemical or electrochemical methods to reduce the surface roughness of automotive aluminum parts, so as to obtain a bright and flat surface processing method. The polishing process is mainly divided into mechanical polishing, chemical polishing and electrolytic polishing. The automotive aluminum parts are mechanically polished + electrolytic polished, which can be close to the mirror effect of stainless steel, giving people a sense of high-end, simple and fashionable future (of course, it is easy to leave fingerprints, and more care is needed).

3. Drawing

Metal wire drawing is the manufacturing process of repeatedly scraping the aluminum plate with sandpaper. Drawing can be divided into straight drawing, random drawing, spiral drawing and thread drawing. Metal processing WeChat, the content is good, it is worthy of attention. The metal wire drawing process can clearly show every tiny silk mark, so that the fine hair luster is exuded from the metal matte, and the product is both fashionable and technological.

4. High-gloss cutting 

Use an engraving machine to reinforce the diamond knife on the main shaft of the engraving machine rotating at a high speed (generally 20,000 rpm) to cut parts, resulting in local highlight areas on the surface of the product. The brightness of the cutting highlights is affected by the speed of the milling drill. The faster the drill speed, the brighter the cutting highlights, otherwise, the darker it is, and it is easy to produce knife lines. Metal processing WeChat, the content is good, it is worthy of attention.

5. Anodizing

Anodizing 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 aluminum products (anode). Anodizing can not only solve the defects of aluminum surface hardness and wear resistance, but also prolong the service life of aluminum and enhance its aesthetics. It has become an integral part of aluminum surface treatment and is currently the most widely used and successful process.