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aluminum ·
aluminum anodizing process ·
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Power Amplifier
The surface treatment technology of aluminum alloy mainly includes coating, chemical conversion, electroplating and anodizing.
Among them, the anodic oxidation technology is the most widely used because of its simple equipment, stable process, and the prepared aluminum alloy oxide film has excellent properties such as high hardness, good wear resistance, and good corrosion resistance.
The anodizing properties of aluminum alloys are affected by process factors. Therefore, in practical production applications, process factors need to be strictly controlled.Here's why electronics enclosures are popular
So today, yongucase will take you to briefly introduce several process factors.
Pretreatment process
The aluminum alloy needs to be pretreated before anodizing, mainly to remove the aluminum oxide film naturally formed on the surface of the aluminum alloy substrate.
If the concentration of the pretreatment solution is too high, the surface reaction speed of the aluminum alloy substrate will be too fast, and the surface of the substrate will be easily corroded by excessive reaction; on the contrary, if the concentration is too low, the surface reaction of the aluminum alloy substrate will be too slow and uneven.
Since the control of the pretreatment time will affect the pretreatment effect of the substrate surface,therefore, the control of pretreatment process parameters and process is very important for aluminum alloy anodization technology.
Electrolyte temperature
The aluminum alloy anodizing process will generate a lot of heat, and the oxidizing solution will absorb this heat, resulting in an excessively high temperature of the oxidizing solution.
If the temperature of the oxidizing solution is too high, the pore size of the oxide film will be large, the density will be poor, and the bond with the substrate will not be close, and it will be easy to fall off. In this way, the quality of the aluminum alloy anodic oxide film will be affected.
In industrial production, mechanical stirring or temperature cooling device is usually used to cool the oxidizing liquid to solve the problem of excessively high temperature of the oxidizing liquid, so as to ensure the preparation of an oxide film with good tightness.
Power supply voltage
The voltage applied by the power source is the power source of the aluminum alloy anodization process, and its size will directly affect the performance of the oxide film.
When the power supply voltage is too small, the anodic oxidation process of the aluminum alloy is slow, the oxide film formed on the surface of the aluminum alloy substrate within a certain period of time is thin, and the preparation efficiency is low; on the contrary, the anodic oxidation process of the aluminum alloy reacts violently, and the surface of the substrate is easily overheated and blackened. Even the local structure of the matrix will be destroyed. In general, in order to ensure the formation of an aluminum alloy anodic oxide film with excellent performance, it is necessary to control the power supply voltage within a certain range.
We also have CNC process knowledge, if you are interested, you can leave your contact information and we will send you the catalog
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