What are the processes of the surface treatment of the lock, the original can be electrophoretic paint process
Surface treatment is to form a surface layer with certain special properties on the surface of the material by physical or chemical methods. The benefit of surface treatment is to improve the performance of product appearance, texture, function and other aspects. However, metal surface treatment is a coating made on metal. Today, we will mainly introduce the surface treatment of locks, and let us raise our ears to listen.
There are many types of surface treatments for locks. At present, the common ones are: anodizing, electrophoretic coating, vacuum plating, polishing, sandblasting, etching, electroplating and so on.
It mainly uses the principle of electrochemistry to produce a layer of Al2O3, namely alumina film, on the surface of aluminum and aluminum alloy. This layer of oxide film has special properties such as protection, decoration, insulation and abrasion resistance.
What are the technical characteristics of anodizing:
a. Can improve the strength of the product surface
b. Can make various color effects, but not white
c. Anodizing can achieve nickel-free sealing, which meets the standards of nickel-free in Europe, the United States and other countries.
So what are the technical difficulties of anodizing:
The quality of the anodizing process is related to the quality of the final product. The key to improving the oxidation quality is the amount of oxidant, the suitable temperature and the current density.
Electrophoretic coating can be applied on various metal surfaces to make products appear in various colors and maintain metallic luster, while improving surface properties, having good anti-corrosion performance, and can bring high-end decorative effects to products.
Electrophoresis process: pre-treatment → electrophoresis → post-cleaning → drying
The advantages of electrophoresis are:
a. Rich colors, can be painted with different color effects;
b. No metal texture, can be processed with sandblasting, polishing, wire drawing and other processes;
c. Because electrophoresis is a soaking form, surface treatment of products with complex structures can be achieved;
d. The electrophoresis process is mature and can realize large-scale continuous production.
3.PVD vacuum coating
The full name of physical vapor deposition is an industrial manufacturing process, which is a technology that mainly uses physical processes to deposit thin films. The metal surface can be plated with a high-hardness, high-wear-resistant metal-ceramic decorative coating.
It is a technology that uses electrolysis to make a metal film on the surface of the metal to prevent corrosion, improve wear resistance, electrical conductivity, light reflectivity, and improve aesthetics.
The biggest advantage of electroplating is that the coating has high gloss and high-quality metal texture. The cost is relatively lower than PVD vacuum plating. But electroplating has a greater pollution to the environment.
The metal wire drawing process is a surface treatment method for forming decorative lines on the surface of the workpiece by grinding the product. According to the different drawing methods, it can be divided into: straight line drawing, random line drawing, corrugation, and spin line drawing. The wire drawing process can make the metal surface have a non-mirror-like metallic luster, and the wire drawing process can also eliminate the slight flaws on the metal surface. The drawing process can improve the grade of the product and highlight the taste.
This time, the editor of Hongheshun Electrophoretic Paint Manufacturer only shared it here. We will continue to explain the other surface treatment processes in later articles. If you have any questions, you can always consult our technical engineers. Tel: 0755 -89264486.