Magnet plating treatment is mainly for the special working environment of the magnet. For example, the working conditions of the motor magnet and the iron remover magnet are relatively humid, so the surface plating treatment is required. At present, the main plating technologies of magnets are: galvanized, chrome-plated, nickel-plated, black-plated nickel, nickel-plated copper-nickel, gold-plated, silver-plated, and epoxy-coated.

The coating treatment of the surface of the neodymium iron boron magnet is performed according to the application characteristics of the product and the plating process. The most common plating process is galvanizing and nickel plating. The surface color of each plating layer is different. Each has its own Advantages and disadvantages.

Galvanized: The surface looks silvery white. It can be used for 12-48 hours of salt spray. It can be used in some glues. (such as AB glue) If it is plated, it can be stored for two to five years. The advantage is that the price is relatively low. .

Black-plated zinc: It is processed according to customer's requirements to black surface. In the electroplating process, it is mainly based on galvanizing and chemical treatment with a black protective film. This film can also protect the product. Increase the salt spray time and prolong the oxidation time. However, the surface is easily scratched and loses its protective effect.

Nickel plating: It looks like stainless steel gloss, it is difficult to be oxidized in the air, and the appearance is good, the gloss is good, and the plating can pass the salt spray test for 12-72 hours. The disadvantage is that it can not be used with some glues, which will cause the coating to fall off and accelerate oxidation. Nowadays, nickel-copper-nickel is mostly used in the market. This plating method is used for 120-200 hours of salt spray, but the plating cost is relatively high. .

Gold-plated silver plating: mostly used for magnetic jewelry, magnetic jewelry is mostly golden yellow, silver white. The gold-plated magnet looks very beautiful like gold, and is generally used in the jewelry industry. Our products are also gold-plated for magnetic jewelry.

Epoxy resin: It is a magnet that is coated with a layer of resin paint after nickel plating. The biggest advantage is that it can prolong the salt spray test time.

Chrome plating: Chrome plating is generally rare, so that its chrome plating process has strong corrosion resistance and it is difficult to react with other substances. It is generally used in harsh working environments with high pH. The cost of electroplating is very high, and the company can't accept it, so there are few people to choose.