What is the treatment process of neodymium block magnets material surface coating
The neodymium block magnets material is a highly active powder metallurgy material, which is prone to corrosion. Therefore, when the surface is treated, the appropriate pretreatment and electroplating process should be carefully selected.
The neodymium block magnets material is a highly active powder metallurgy material, which is prone to corrosion. Therefore, when the surface is treated, the appropriate pretreatment and electroplating process should be carefully selected. Before electroplating, neodymium block magnets material must undergo chamfering, degreasing, pickling, ultrasonic cleaning and other processes that can stabilize and clean the surface to obtain a coating with good bonding, low porosity and long-lasting corrosion resistance. What is the treatment process of the NdFeB magnet surface coating?
The main components of neodymium block magnets material are neodymium and iron, which are easy to corrode. Therefore, NdFeB must be surface-coated. Surface chemical passivation is one of the best solutions at present.
We have advanced epoxy technology, which can meet the salt spray test for 500-1000 hours. Neodymium block magnets material has extremely high magnetic energy product and coercive force, and at the same time has the advantages of high energy density, high cost performance, and good mechanical properties; the disadvantage is that the magnetic transition point is low, the temperature characteristics are poor, and it is easy to pulverize and corrode. Only by adjusting its chemical composition and adopting surface treatment methods to improve it can it meet the requirements of practical application.
In the field of descaling and anti-scaling of neodymium block magnets material, after the water is treated by NdFeB high-strength magnetization, the water molecular bonds are deformed at the same time in the fire angle and length, and the hydrogen bond angle is reduced from 105 degrees to about 103 degrees. The physical and chemical properties have undergone a series of changes, and the activity and absorptivity of the water have been greatly improved. The calcium carbonate in the water is flatly decomposed to form a relatively solid calcium bicarbonate during the cooking process, which is not easy to accumulate on the wall and is easily taken away by the water.
The degree of polymerization of other water increases, and the dissolved solid materials become finer particles. After the particles are refined, the distance between the two ions is small, and it is not easy to agglomerate on the wall, and then achieve the effect of descaling. When choosing an electroplating process for neodymium block magnets material, it is necessary to consider not only the protection and production practicability of the process, but also the impact and damage degree of electroplating emissions on the environment.
Tongli Magnetic Industry Co., Ltd.
Address: No. 5, Changfu Road, Ludong community, Humen Town, Dongguan City, Guangdong Province
Contact: Lucid
Tel: +86-769-82882585 +86-18028919951
E-mail: lucid@tlmagnet.com
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