Aluminum alloy processing surface treatment process

2023-07-25

Aluminum alloy processing surface treatment includes spraying, polishing, wire drawing, high-gloss cutting, anodizing, two-color anodizing and other processes. The purpose of mechanical treatment is to remove unevenness on the surface of the product and remedy other undesirable appearance phenomena on the surface. Chemical treatment removes the oil and rust on the surface of the product, and forms a layer that can make the film-forming substance better combined or formed into an active metal body, ensure that the coating has a stable state, increase the bonding force of the protective layer, and thus achieve the role of protecting the body.

Aluminum alloy parts processing

1. Sandblasting for aluminum alloy processing

The process of cleaning and roughening metal surfaces using the impact of high-speed sand streams. This method treatment can make the surface of aluminum parts obtain a certain degree of cleanliness and different roughness, improve the fatigue resistance of the workpiece, strong adhesion between the coatings, extend the durability of the coating film, and also facilitate the leveling and decoration of the coating.

2. Polishing of aluminum alloy processing

Using mechanical, chemical or electrochemical methods, the surface roughness of the workpiece is reduced to obtain a bright and flat surface processing method.

3. Wire drawing for aluminum alloy processing

Wire drawing metal is a manufacturing process in which aluminum sheets are repeatedly scraped out of line with sandpaper. Wire drawing can be divided into straight grain wire drawing, random grain wire drawing, rotary wire drawing, thread wire drawing.

4. Aluminum alloy processing high-gloss cutting

The engraving machine is used to reinforce the diamond knife on the spindle of the engraving machine that rotates at high speed (generally 20000 rpm) to cut the parts, resulting in a local highlight area on the surface of the product. In recent years, some high-end electronic products, such as the metal frame of the TV, have adopted the high-gloss milling process, coupled with the anodizing and wire drawing process, making the TV full of fashion sense and technological sharpness.

Aluminum alloy processing and forging

5. Anodizing of aluminum alloy processing:

Anodizing refers to the electrochemical oxidation of metals or alloys, aluminum and its alloys under the corresponding electrolyte and specific process conditions, due to the action of applied current, on the aluminum products (anode) to form a layer of oxide film process. Anodizing extends the life and aesthetics of aluminum, and is currently the most widely used and highly successful process.

6. Two-color anodizing for aluminum alloy processing

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; However, through the contrast between the two colors, it can reflect the high-end and unique appearance of the product.

Aluminum alloy processing and polishing treatment

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