Magnetic materials, as the latest result of the development of rare earth permanent magnet materials, are known as the "magnetic king" due to their excellent magnetic properties. Magnetic materials are alloys of neodymium, iron oxide, etc. Also known as magnetic steel. The advantages of high magnetic energy product and coercivity, as well as high energy density, have made permanent magnet materials widely used in modern industry and electronic technology, making it possible to miniaturize, lighten, and thin equipment such as instruments, electroacoustic motors, and magnetic separation magnetization. The advantages of it are high cost-effectiveness and good mechanical properties; The shortcomings lie in the low Curie temperature point, poor temperature characteristics, and easy pulverization and corrosion. It must be improved by adjusting its chemical composition and adopting surface treatment methods to meet the requirements of practical applications.

The third-generation rare earth permanent magnet is the most powerful permanent magnet among contemporary magnets. Its main raw materials include rare earth metal neodymium 29% -32.5%, metallic element iron 63.95-68.65%, non-metallic element boron 1.1-1.2%, and a small amount of added elements such as dysprosium 0.6-1.2%, niobium 0.3-0.5%, aluminum 0.3-0.5%, copper 0.05-0.15%.

Permanent magnet materials are based on the intermetallic compound RE2FE14B. The main components are rare earth (Re), iron (Fe), and boron (B). Among them, rare earth ND can be partially replaced by other rare earth metals such as dysprosium (Dy) and praseodymium (Pr) in order to obtain different properties, while iron can also be partially replaced by other metals such as cobalt (Co) and aluminum (Al). The boron content is small, but it plays a crucial role in forming intermetallic compounds with a tetragonal crystal structure, making the compounds have high saturation magnetization, high uniaxial anisotropy, and high Curie temperature.

Process flow: batching → melting and ingot making/strip throwing → powder making → pressing → sintering and tempering → magnetic testing → grinding processing → pin cutting processing → electroplating → finished product. The ingredients are the foundation, and sintering and tempering are the key.

Magnetic blank production tools and performance testing tools: there are smelting furnaces, strip throwing furnaces, EB breaking machines, air flow mills, compression molding machines, vacuum packaging machines, isostatic presses, sintering furnaces, heat treatment vacuum furnaces, magnetic performance testers, and Gauss meters.

Magnetic machining tools: centerless grinding, rounding machine, double end grinding, flat grinding, slicing machine, double-sided grinding, wire cutting, Tianjin high-speed, Xihu platform drilling, irregular grinding, etc.