1. Anodizing
Anodizing refers to the electrochemical oxidation of metals or alloys. Aluminum and its alloys form an oxide film on aluminum products (anodes) under the action of an applied current under the corresponding electrolyte and specific process conditions. 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. It has become an indispensable part of aluminum surface treatment and is currently the most widely used and very successful method. craft.
2. Two-color anodizing
Two-color anodizing refers to anodizing on one product and giving specific areas a different color. Two-color anodizing is expensive because of the complex process; but the contrast between the two colors can better reflect the high-end and unique appearance of the product.
3. Sand blasting (shot peening)
The process of cleaning and roughening metal surfaces by the impact of high-speed sand flow. The surface treatment of aluminum parts by this method can obtain a certain degree of cleanliness and different roughness on the surface of the workpiece, and improve the mechanical properties of the surface of the workpiece, thus improving the fatigue resistance of the workpiece and increasing the distance between it and the coating. Excellent adhesion, prolongs the durability of the coating film, and is also conducive to the leveling and decoration of the coating. We often see this process in various products of Apple, and it is also increasingly used in existing TV casings or middle frames.
4. Polishing
Using 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, electrolytic polishing. The aluminum parts adopt mechanical polishing + electrolytic polishing, which can approach the mirror effect of stainless steel, giving people a sense of high-end simplicity, fashion and future (of course, it is easy to leave fingerprints and more care should be taken).
5. Drawing
Metal wire drawing is the manufacturing process of repeatedly scraping the aluminum plate out of the line with sandpaper. Drawing can be divided into straight drawing, random drawing, spiral drawing and thread drawing. The metal wire drawing process can clearly show every tiny silk trace, so that the fine hair shines in the metal matte, and the product has both fashion and technology sense.
6. High gloss cutting
The engraving machine is used to strengthen the diamond knife on the high-speed rotating (generally 20,000 rpm) spindle of the engraving machine to cut parts, and produce local highlight areas on the surface of the product. The brightness of the cutting highlight is affected by the speed of the milling drill bit. The faster the drill speed is, the brighter the cutting highlight is, otherwise the darker it is and it is easy to produce knife lines. High-gloss cutting is especially used in mobile phones, such as iphone5. In recent years, some high-end TV metal frames have adopted high-gloss milling technology, coupled with anodizing and wire drawing technology, which makes the TV set full of fashion sense and sharp sense of technology.
