The surface treatment process of die-casting aluminum usually includes the following:
Anodizing: This is a common surface treatment method. By forming an oxide film on the aluminum surface, the corrosion resistance, hardness and aesthetics of aluminum can be improved. Oxidation treatment can be divided into hard oxidation and soft oxidation, in which hard oxidation treatment is suitable for parts requiring surface hardness and wear resistance, while soft oxidation is suitable for parts requiring surface aesthetics and corrosion resistance.
Sandblasting: Sandblasting can remove the surface defects such as burrs and scale, and increase the surface roughness, thus facilitating subsequent painting or other processing.
Free sample of die-casting aluminum magnetic polishing
Chemical polishing: Chemical polishing can remove tiny bumps on the aluminum surface, thus improving the flatness and smoothness of the surface.
Electroplating treatment: By electroplating a layer of Metal or alloy on aluminum surface, its surface hardness, corrosion resistance and aesthetics can be improved. Common electroplating treatments include chromium plating, nickel plating and zinc plating.
Thermal spraying treatment: Thermal spraying is a method of spraying metal powder on aluminum surface at high temperature, which can form a hard and wear-resistant surface coating and improve the corrosion resistance and protective performance of aluminum.
It is necessary to select the appropriate surface treatment process according to the specific situation, and pay attention to the correct operation and protection to ensure the processing quality and efficiency.
The burr on the surface of aluminum alloy can be treated by the following methods:
Sandblasting method: The aluminum alloy parts are placed in a sandblasting chamber, and abrasive particles are sprayed by high-speed jet to sandblast the aluminum alloy surface, which can effectively remove burrs and scale on the surface.
Oxidation treatment: By forming an oxide film on the surface of aluminum, the corrosion resistance, hardness and aesthetics of aluminum can be improved. In the process of oxidation treatment, tiny dissolution and heavy precipitation will occur at the same time, so that surface burrs can be removed.
Chemical polishing method: chemical polishing can remove tiny protrusions on the aluminum surface, thus improving the flatness and smoothness of the surface. Commonly used chemical polishing agents include hydrofluoric acid and nitric acid.
Machining method: By machining, such as turning, cutting, grinding, etc., burrs and protrusions on the surface are removed to improve the smoothness and smoothness of the surface.
It is necessary to select appropriate treatment methods according to specific conditions, and pay attention to correct operation and protection to ensure processing quality and efficiency. Especially when using sand blasting or chemical polishing, it is necessary to pay attention to the safety protection measures for equipment and human body.
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