The three most common methods for surface oxidation of aluminum plates

The three most common methods for surface oxidation of aluminum plates

The application of aluminum plates has become more and more widespread. With the different industries and needs, the processes required for processing aluminum plates are also different. The oxidation processing of aluminum plates is already a common one in the aluminum plate process. The element of aluminum in chemistry is It is a relatively lively metal element and is introduced in detail in the table of elements we learned in school.

The three most common methods for surface oxidation of aluminum plates

So there are several processes for surface oxidation of aluminum plates. You may not know. Today Huawei Aluminum will introduce to you the three most common methods of surface oxidation of aluminum plates.

First: Surface treatment and oxidation

We all know that aluminum plate are rust-proof and have excellent corrosion resistance and wear resistance. There will be an oxide film on the surface of the aluminum plate when it leaves the factory. This is why the aluminum plate can prevent oxidation, but over time, this layer The oxidation film on the aluminum plate will react chemically, so what is the oxidation process? In fact, the oxidation process is to make the oxide film thicker, making the original oxide film on the surface of the aluminum plate thicker.

Oxidized aluminum plates can improve corrosion resistance and wear resistance. So when we oxidize the surface of the aluminum plate, the first step is to clean the surface of the aluminum plate. Oxidation is an extremely important and demanding process. Therefore, the aluminum plate must not be dusty, oily or in the handling process before oxidizing the aluminum plate. Any problems caused by it, even burrs, scratches, and dust, are not allowed, because once there are the problems mentioned above, it is recommended that the oxidation effect will be poor, which is not conducive to the coloring of the oxide film.

Second: Anodizing of aluminum plates

After we finish the surface treatment, we can then enter the formal anodizing stage. Generally speaking, it can be divided into two categories. One is the chemical oxidation that is currently more commonly used, and the other is what we are talking about today. Anodizing is a method of chemical oxidation.

Usually, the pre-cleaned aluminum plate is soaked in a weakly alkaline or weakly acidic solution. In this way, the reaction of metal elements on the surface of the aluminum plate will produce an oxide film on the surface of the aluminum plate. This process will thicken, which means that the aluminum we mentioned earlier is a relatively active element.

So what is the anodizing process? Anodizing usually uses electric current, which can be divided into direct current, alternating current, or continuous alternating current to perform oxidation treatment. This is currently our most commonly used anodizing treatment method.

Third: Precautions for aluminum plates after oxidation

The oxidized aluminum plate is what we call the aluminum plate with a thickened protective film. It is recommended to avoid contact with the oxidized aluminum plate before processing. Prevent workers from dragging and scratching during use, and avoid scratches during transportation.

The above are the three most common oxidation steps for aluminum plates. I hope it will be helpful to you. If you need to order any aluminum alloy products, please contact us.

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