How to choose the NdFeB strong magnetic coating correctly

Common NdFeB strong magnets are golden and silvery white. In fact, the magnet itself is not what everyone sees, but it looks like it will appear after the electroplating process.



The most common types of NdFeB strong magnetic coatings are galvanized and nickel-plated, which are the golden and silver-white magnets that everyone sees. Although most people know that magnets need electroplating, they are not clear about electroplating. What is the difference between the layer's effect on the magnet.

In fact, galvanized and nickel-plated NdFeB magnets have significant differences in appearance, anti-rust treatment, and service life:

First, the difference between polishing and polishing

Nickel plating is superior to galvanizing in grinding and polishing, and the appearance is brighter. For those with high requirements on the appearance of the product, nickel plating is generally selected. Most of the exported goods are nickel-plated. And some magnets are not exposed, and the regulations on the appearance of the products are relatively low, generally galvanizing is enough.



Second, the difference between anti-rust treatment

After the nickel-plated surface is solved, its corrosion resistance is higher, which can reach 96H corrosion resistance and no rust, while galvanized only guarantees 48H corrosion resistance and no rust.



3. Strength difference

Nickel plating is also higher than zinc plating. In the whole process of application, it can prevent the impact and other conditions to a great extent, and promote the occurrence of angle drop and cracking of the NdFeB strong magnetism.



Fourth, the difference in the period of use

Compared with nickel plating, zinc plating has different surface coatings and different corrosion resistance, and its service life is shorter than that of nickel plating. The specific performance is that the surface coating is very easy to fall off after a long time, causing air oxidation of the magnet, which in turn harms magnetic.



Five, the price difference

In these respects, galvanizing is extremely advantageous, and the price is sorted from low to high as galvanized, nickel-plated, epoxy glue, etc. The difference in the quality of raw materials and manpower is also a decision-making factor. The basic zinc-nickel plating is barrel plating, and nickel-plating is a method of inlaying a layer of nickel on metal materials or some non-metallic materials according to electrolysis or organic chemistry. Therefore, it is called nickel plating.



The electroplating process of NdFeB strong magnetism is to enhance a layer of safety protection layer on the surface, which has the functions of beautiful appearance, corrosion resistance, anti-rust treatment, improved surface compressive strength, and increased service life.