Aluminum Plate Processing Technology


Metals materials used more and more on the existing each kind of product, because the metal material more can reflect the product quality, highlight the brand value, and in many metals material, aluminum because of its easy processing, good visual effect, the surface treatment method is rich, the first adopted by each manufacturer, aluminum surface treatment is mainly divided into: Sandblasting (form matte pearl silver surface), polishing (form mirror), hairline( form a similar satin effect), electroplating ( cover a layer of other metals), spraying (cover other non-metallic coating).

Sandblasting (shot blasting)

The process of cleaning and coarsening metal surfaces using the impact of high-speed sand flow. This method of aluminum surface treatment can make the surface of the workpiece to obtain a certain cleanliness and different roughness, so that the mechanical properties of the workpiece surface is improved, so as to improve the fatigue resistance of the workpiece, increase the adhesion between it and the coating, prolong the durability of the coating film, but also conducive to the flow and decoration of the coating. This process is often seen in various Apple products and is increasingly being used in existing TV cases or middle frames.

It is difficult to have enough coverage for shot peening which requires the surface of parts to produce compressive stress.

And it is difficult to make a quantitative judgment, so often take control of the shot peening strength, that is, to achieve a certain degree of sandblasting method, that is, to achieve a certain sandblasting strength, to get the required pressure value, shot peening strength is mostly described in the United States SAE standard J442.


A process in which the surface roughness of the workpiece is reduced by mechanical, chemical or electrochemical methods in order to obtain a bright, flat surface. Polishing process is mainly divided into: mechanical polishing, chemical polishing, electrolytic polishing. Aluminum parts using mechanical polishing + electrolytic polishing can be close to the stainless steel mirror effect, giving a person with high-grade simple, fashionable feeling of the future (of course, easy to leave fingerprints but also more care).


Metal hairline is a manufacturing process in which aluminum sheets are repeatedly sanded out of the wire. Drawing can be divided into straight line drawing, random drawing, spiral drawing, thread drawing. Metal wire drawing process, can clearly show each fine silk mark, so that the metal matte out of the fine hair luster, the product has fashion and sense of science and technology.

Brushed aluminum plate is a manufacturing process that repeatedly uses sand paper to scrape the aluminum plate out of the line. Its technological process is mainly divided into three parts: deester, sand mill and water washing. In the drawing process of aluminum plate, the special skin film technology after the anodic treatment can generate a skin film layer containing the metal composition on the surface of aluminum plate, clearly show each fine silk mark, so as to make the metal matte out of the fine hair luster. More and more aluminum plate products are used in the metal shell of the metal wire drawing process, in order to play a beautiful, anti-erosion role. Make the product both fashion and science and technology elements. That’s one of the reasons why it’s so popular.

In the process of aluminum plate receiving pressure, the aluminum plate is forced through the mold under the action of external force, the metal cross-sectional area is compressed, and obtain the required shape and size of the cross-sectional area of the technical processing method called aluminum plate drawing process. The tool that makes the aluminum plate change shape and size is called drawing die.

High light cutting

The diamond cutter is reinforced by the fine carving machine in the high speed rotation (general speed of 20000 RPM) on the spindle of the fine carving machine to cut parts, resulting in a local highlighting area on the surface of the product. The brightness of the cutting highlights is affected by the speed of the milling bit. The higher the speed of the bit, the brighter the highlights will be, and the darker and more likely to produce the cutter grain. High light high light cutting in the use of mobile phones, such as iphone5, in recent years, some high-end TV metal frame using high light milling process, coupled with anodic oxidation and wire drawing process makes the whole TV is full of fashion sense and sharp sense of science and technology.

Anodic oxidation

Anodic oxidation refers to the electrochemical oxidation of metal or alloy, aluminum and its alloy in the corresponding electrolyte and specific process conditions, due to the action of the impressed current, aluminum products (anode) on the formation of a layer of oxide film process. Anodic oxidation can not only solve the defects of aluminum surface hardness, wear resistance and other aspects, but also prolong the service life of aluminum and enhance the aesthetic degree, has become an indispensable part of aluminum surface treatment, is currently the most widely used and very successful process.

Dual color anodic oxidation

Two-color anodizing refers to anodizing a product and giving specific areas different colors. Double-color anodic oxidation has high cost because of its complex process. But through the contrast between the two colors, more can reflect the high-end, unique appearance of the product.

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