As coated aluminum coils come into our lives more and more widely, everyone's requirements for the quality of coated aluminum coils are getting higher and higher. What kind of coated aluminum coil can attract more users? Then we must work hard on the visual effect and surface treatment of aluminum coils. The following is a detailed interpretation of the five unique processes for the surface treatment of coated aluminum coils:
One. Polishing: use 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. After the aluminum coil adopts mechanical polishing + electrolytic polishing, it can approach the mirror effect of stainless steel, giving people a sense of high-end simplicity and fashion future.
Two. Sand blasting: the process of cleaning and roughening the metal surface 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.
Three. Highlight: Cutting uses engraving machine 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 product surface. 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 iphone14. In recent years, some high-end TV metal frames have adopted high-gloss milling technology, coupled with anodic oxidation and wire drawing technology, which makes the TV set full of fashion sense and sharp sense of technology.
Four. 1) Anodizing: Anodizing refers to the electrochemical oxidation of metal or alloy. After the aluminum coil is cut into a plate shape, under the corresponding electrolyte and specific process conditions, due to the action of the applied current, the aluminum product (The process of forming an oxide film on the 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 the aesthetics. It has become an indispensable part of aluminum surface treatment. It is currently widely used and very successful.
2) Two-color anodizing: Two-color anodizing refers to anodizing on one product and giving different colors to specific areas. 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.
Five. Wire drawing: Metal wire drawing is a manufacturing process in which aluminum coils are repeatedly scraped out of lines 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.
Through these five unique techniques, the appearance, image and quality of aluminum coils can be greatly improved, and the user experience can be improved, so that more and more users like colorful coated aluminum coil products.
