What are the methods of metal surface treatment process?

1. Anodizing

Using the principle of electrochemistry, an alumina film is generated on the surface of aluminum and aluminum alloy, and the main functions of this oxide film are protection, decoration, insulation, and wear resistance. In the anodizing process, different processes are adopted in monochrome, gradient color and two-color, and the dosage of oxidant, suitable temperature and current density are mainly considered in improving the oxidation yield.

2. Electrophoresis

The function of electrophoresis is to maintain the gloss of the metal surface, but also to enhance the surface properties, with high corrosion resistance. The way to do this is to make stainless steel and aluminum alloys and other materials to achieve a variety of colors on the surface of the product. The electrophoresis process is relatively simple, mainly through three steps of pretreatment, electrophoresis and drying.

3. Microarc oxidation

In the process of using electrolyte solution to generate a ceramic surface layer with high voltage electricity, the micro-arc oxidation process is affected by high power consumption and makes the cost the highest, and can only achieve two colors: black and gray.

4. PVD vacuum plating

PVD can achieve high hardness and high wear resistance of metal surface plating of cermet decorative coating, PVD vacuum plating process means is the use of logistics process to deposit thin film technology.

5. Electroplating

The electroplating process means that the metal surface is corroded by electrolysis to attach the metal film to the metal surface, which can improve wear resistance, conductivity, reflectivity, aesthetics, etc.

6. Powder coating

Powder coating is often used in the appearance of building furniture products and heat sinks, the powder coating process is five steps above the piece-electrostatic precipitation-spraying-low-temperature leveling-baking, mainly through the powder coating equipment to spray the powder coating to the surface of the workpiece, under the action of static electricity, it is adsorbed on the surface of the workpiece to form a powdery coating, and the different effects are formed by high temperature baking.

7. Metal drawing

The brushing treatment is to make the metal surface produce a non-mirror metallic luster can also eliminate subtle defects, mainly by grinding the product on the surface of the workpiece to form a line pattern, a means to play a decorative effect.

8. Polishing

In order to improve the dimensional accuracy and geometry progress of the workpiece, polishing gives the surface of the product a smooth and mirror-like shine by using flexible polishing tools and abrasive particles and other polishing media to modify the surface.

9. Etching

Through plate making exposure, after development, the protective film of the time area is removed, and the metal is exposed to the chemical solution during etching, and the two positive patterns are used to achieve the effect of dissolving and corroding through chemical flooding from both sides, forming the effect of concave and convex or hollow molding. There are two ways to achieve the process, namely: exposure method and screen printing method.