When it comes to magnetic materials, we have to talk about "magnetism" first. Experiments have shown that any substance can be magnetized to varying degrees in an external magnetic field. According to the characteristics exhibited by substances in an external magnetic field, substances can be divided into five categories: paramagnetic substances, diamagnetic substances, ferromagnetic substances, ferrimagnetic substances, and antiferromagnetic substances.

In today's society, children's education and intellectual development have received unprecedented attention. Parents and educators are seeking various methods to promote the comprehensive development of children. Puzzle toys, as a tool that combines education and entertainment, have received widespread attention. Among them, puzzle magnets, as an emerging puzzle toy, have gradually become an important component of children's education due to their unique characteristics and diverse gameplay. This article will explore the positive effects of educational magnets on children's intellectual development

With the thawing of sintered NdFeB patented technologies in Japan, Germany, and the European Union, and the concerted efforts of major sintering manufacturers in China, the performance of sintered NdFeB products has been greatly improved. As a high-tech application field, its comprehensive performance has been continuously improved, The requirements for the surface treatment of its sintered NdFeB have also been greatly increased, and traditional treatment methods have been unable to meet the requirements of the progress of the industrial chain. The University of Electronic Science and Technology of China, Sichuan University, Jiaotong University, Rui Shilai and other major scientific research institutions in China, from microscopic molecules Starting with the structure, essentially perfecting the principle of surface treatment and the development of industrial application processes, after 4 years of hard work, we have achieved key technical developments.

As the strongest magnet currently known, neodymium magnets have the characteristics of high remanence and high coercivity, and are widely used in motors, horns, wind generators, new energy automobile motors, medical equipment, electronic appliances and other fields.

There are many types of magnets, and each type of magnet has a different grade, so how to choose the right magnet