At present, my country's rare earth NdFeB production has formed an industrial system, and the output has accounted for more than 80% of the world's total output. However, my country has some shortages and insufficient competitiveness in the production of high-end NdFeB products, and has become a restrictive magnetic material. The bottleneck of industrial development is mainly due to the fact that the electroplating quality of China's NdFeB surface has not reached the requirements of high-end applications, which restricts its application in high-end products. As we all know, the chemical properties of rare earth elements are active. Without surface coating technology, extending the rare earth terminal industry chain is just empty talk. Therefore, the industry has long condensed the consensus of “no electroplating is not high-end”.

      It is understood that this technology can effectively improve the consistency and stability of rare earth magnet products, and the potential difference between semi-bright nickel and bright nickel can promote the magnet surface to change from longitudinal corrosion to lateral corrosion during the corrosion process, which can reduce The life name of the product is increased by more than 2 times. Ultrasonic cleaning is added to each process of the coating, which can effectively remove impurities on the surface of the coating, and "subject" the coating thickness from 15 microns to 10 microns, making the product more refined and stronger.

      The application of neodymium-iron-boron magnetic material mainly uses its auspicious air tire from the magnetic field of Lumao to strong Xia Hg, and the size of Hg is proportional to the square root of the large energy product (BH)™ of the permanent magnet material, so it can be used (BH)™ The continuous improvement to illustrate the development of NdFeB permanent magnet materials.

      The development of the large energy product (BH)™ of permanent magnet materials in the past 100 years in the 200th century. It can be seen that during the 20th century, every 10 years or so, (BH)™ developed by leaps and bounds. From 15kJ/m3 in the early 20th century to 400kJ/m3 in the early 1990s, the average height per 10I was 40kJ/m3. Among them, the recent two (BH)™ jumps increased greatly, and from about 100W/m3 in the 1970s Increased to 260kJ/m3, and from 260kJ/m3 to 400kJ/m3 in the 1980s, an increase of about 140kJ/m3 within 10 years

    In recent years, people are concerned about the increase from 400W/m3 to 500~600kJ/m3 in the 10-20 years from the 20th century and then three years to the beginning of the 21st century? Some scholars believe that the possibility of stepping is very small. The magnetic energy product of a material saturates when it reaches a certain level, or if it reaches a plateau, a new leap requires the emergence of a new material.