CNC Turning Anodized Aluminum Screw For Decoration

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Surface Treatment of Aluminum Products

1. Spraying sand (spraying pills)

The process of cleaning and roughing metal surfaces with the impact of high-speed sand currents.

This method of aluminum surface treatment can make the surface of the work piece to obtain a certain degree of cleanliness and different roughness, so that the mechanical properties of the work piece surface is improved, so it improves the fatigue resistance of the work piece, increases the adhesion between it and the coating, extends the durability of the coating film, but also conducive to the leveling and decoration of the coating. This process is often seen in Apple's various products.

2. Polishing.

The use of mechanical, chemical or electrochemical effects to reduce the surface roughness of the work piece, in order to obtain a bright, flat surface processing method. The polishing process is mainly divided into: mechanical polishing, chemical polishing, electrolytic polishing. Aluminum parts using mechanical polishing and electrolytic polishing can be close to stainless steel mirror effect, the process, giving people a high-grade simplicity, fashion sense of the future.

3. Pulling.

Metal drawing is the manufacturing process of repeatedly scraping aluminum sheets out of lines with sandpaper. The wire can be divided into straight-grained wire, cluttered wire, rotary wire, threaded wire. Metal wire process, can clearly show each fine silk marks, so that the metal matte in the appearance of a fine silk luster, the product is both stylish and scientific and technological.

4. Highlight cutting.

The diamond knife is reinforced with an engraving machine to cut parts on the main shaft of the engraving machine at high speed (general speed of 20,000 rpm), creating a locally highlighted area on the surface of the product. The brightness of the cutting highlights is affected by the speed of the milling drill bit, the faster the drill bit cuts, the brighter the highlights, and the darker and easier it is to produce a knife pattern. High-gloss cutting in the use of mobile phones in particular, such as the iPhone 5, in recent years, some high-end television metal borders using high-gloss milling technology, coupled with anode oxidation and wire-pulling technology makes the television as a whole full of fashion and technology sharpness.

5. Anode oxidation.

Anode oxidation refers to the electrochemical oxidation of metals or alloys, aluminum and its alloys in the corresponding electrolyte and specific process conditions, due to the action of the adcurrent, the formation of a layer of oxide film on aluminum products (anodes). Anode oxidation can not only solve the aluminum surface hardness, wear resistance and other defects, but also extend the life of aluminum and enhance aesthetics, has become an indispensable part of aluminum surface treatment, is currently the most widely used and very successful process.

6. Two-color anode.

A two-color anode is an anode oxidation on a product that gives a specific area a different color. The two-color anode oxidation process is less used in the television industry because of its complexity and high cost, but through the comparison between two colors, it can better reflect the high-end, unique appearance of the product.

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