Three Common Surface Treatment Processes for Aluminum Alloys

Aluminum alloy is one of the most widely used non-ferrous metals in industry, and is extensively used in aerospace, automotive, and machinery manufacturing industries. Due to its inherent advantages, aluminum alloy has a wide variety of processing techniques, allowing it to be made into various forms of products. Below is a detailed introduction to some of the processing techniques for aluminum alloys:

I. Sandblasting Process

The surface of aluminum alloy can be cleaned and roughened by the impact of a high-speed sand stream. This creates different surface roughness levels, changing the mechanical properties of the workpiece surface and improving the workability of the aluminum alloy. This process is often used for aluminum alloy TV frames and advertising frames.

II. Polishing Process

While sandblasting increases the surface roughness of aluminum alloy, polishing reduces it, making the surface bright and smooth. This process can make the aluminum alloy surface approach the mirror-like effect of stainless steel, giving it a simple and stylish feel.

III. Wire Drawing Process

The wire drawing process involves repeatedly scratching lines on the aluminum alloy surface with sandpaper. The resulting textures are diverse, clearly showing the pattern of each fine line. The wire drawing process gives aluminum alloy a combination of fashion and technological appeal.

IV. High-Gloss Cutting Process

The high-gloss cutting process uses a precision engraving machine to create localized high-gloss areas on the product surface. This process is widely used on various aluminum alloy frames. The high-gloss edges give the product more diverse forms and a strong sense of fashion.

V. Anodizing Process

Anodizing is an electrochemical oxidation of metals or alloys in aluminum alloy processing. Under the action of an external current in a suitable electrolyte and specific process conditions, an oxide film is formed on the aluminum product.

Anodizing not only solves the shortcomings of aluminum in terms of surface hardness and wear resistance, but also extends the service life of aluminum and enhances its aesthetics. It has become an indispensable part of aluminum surface treatment and is currently a widely used and very successful process.