How to Do the Surface Finish of Aluminium Alloy Prototype？

The surface finish of aluminium alloy prototype is to enhance the surface hardness and wear resistance of aluminium alloy. Additionally, it can expand its application range and prolong its service life. In fact, surface finish has become an indispensable part of the use of aluminium alloy, and it has a variety of methods, among which the anodizing is the most common application of aluminium alloy prototype at present. Therefore, in order to have a more profound understanding of the surface finish of aluminium alloy prototype, more details will be given, expecting to help you to some extent.

 

 

Sand Blast

The main function of sand blasting is to clean the surface of parts. Front sand blasting can increase surface roughness and improve adhesion. Sand blasting can be divided into coarse sand blasting and fine sand blasting. And the sand of 120 meshes or 100 meshes is commonly used.

 

 

Conductive Oxidation

After the conductive oxidation of aluminium alloy prototype, it has certain anti-corrosion and conductivity. And the aluminium alloy prototype of electronic equipment is widely used. In fact, after the conductive oxidation of aluminium alloy prototype, the interference of electromagnetic signals can be prevented.

 

 

Anodize

Anodizing is a method of using electrolysis principle to form an oxide film on the surface of aluminium alloy prototype, in order to increase the corrosion resistance of parts and make the appearance look beautiful. Specifically speaking, in the corresponding electrolyte and specific process conditions, aluminum and its alloys form a layer of oxide film on the aluminium products due to the action of applied current.

 

 

Plastic Spray

Plastic spraying is also called electrostatic powder spraying. The advantages of this technology are various. For example, it has advanced technology and high efficiency. Additionally, it can save much energy and show bright color. What is more, it is very safe and reliable. As a matter of fact, its working principle is that the plastic powder is charged by high voltage electrostatic equipment. And under the action of electric field, the paint is sprayed on the surface of aluminium alloy prototype. In the end, the powder will be evenly adsorbed on the surface of aluminium alloy prototype to form a powder coating.

 

 

Electroplate

Electroplating takes the working parts as the cathode and the material of forming the coating as the anode. Then the two should be placed in a bath with electroplating solution. After that, through the direct or alternating current, the material of forming the coating is ionized and runs to the surface of aluminium alloy prototype from the electroplating bath, firmly attaching to the surface to form a coating of different thickness.

 

 

Coloring

Coloring methods include chemical coloring, electrolytic coloring and natural coloring. Chemical coloring is to immerse the oxidized aluminium material in organic or inorganic dye solution. Then the dye penetrates into the pore of the oxide film and colors it by chemical or physical action. Electrolytic coloring is the secondary electrolysis of aluminium alloy prototype treated by oxidation in a single metal salt or a variety of metal saline solutions. Under the action of electric field, metal cations infiltrate into the pore of the oxide film and deposit at the bottom of the pore, so that the oxide film produces color. Natural coloring is a method of coloring aluminium material when anodizing. There are alloy chromogenic method and solution chromogenic method. Alloy chromogenic method is to control the composition of aluminium alloy to obtain different colors. Solution chromogenic method, also known as electrolytic chromogenic method, is to control the composition of the electrolyte and electrolytic conditions to control the color.