Neodymium iron boron magnet material, as the latest result of the development of rare earth permanent magnet materials, is called "magnet king" due to its excellent magnetic properties. The NdFeB magnetic material is an alloy of neodymium, iron oxide, etc. Also known as magnet. NdFeB has extremely high magnetic energy product and coercive force, and at the same time, the advantages of high energy density make NdFeB permanent magnet materials widely used in modern industry and electronic technology, thereby making instrumentation, electroacoustic motors, and magnetic separation magnetization The miniaturization, weight reduction, and thinning of equipment are possible. The advantages of NdFeB are high cost performance and good mechanical properties; the shortcomings are that the Curie temperature is low, the temperature characteristics are poor, and it is easy to pulverize and corrode. It must be improved by adjusting its chemical composition and adopting surface treatment methods. In order to meet the requirements of practical applications.

The NdFeB permanent magnet material is a permanent magnet material 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 replaced by some other rare earth metals such as dysprosium (Dy) and praseodymium (Pr) in order to obtain different properties. Iron can also be partially replaced by other metals such as cobalt (Co) and aluminum (Al). The content of boron is small, but However, it plays an important role in the formation of tetragonal crystal structure intermetallic compounds, making the compounds have high saturation magnetization, high uniaxial anisotropy and high Curie temperature.

The third-generation rare earth permanent magnet NdFeB is the most powerful permanent magnet in contemporary magnets. Its main raw material is rare earth metal neodymium 29%-32.5% metal element iron 63.95-68.65% non-metal element boron 1.1-1.2% added in small amounts Dysprosium 0.6-1.2% Niobium 0.3-0.5% Aluminum 0.3-0.5% Copper 0.05-0.15% and other elements

Technological process: ingredients → smelting ingot/spinning belt → powder making → compaction → sintering and tempering → magnetic inspection → grinding process → pin cutting process → electroplating → finished product Among them, the ingredients are the basis, and the sintering and tempering is the key.

NdFeB magnet blank production tools and performance testing tools: smelting furnace, belt spinning furnace, jaw breaking machine, jet mill, compression molding machine, vacuum packaging machine, isostatic press, sintering furnace, heat treatment vacuum furnace, magnetic performance test Meter, Gauss meter.

NdFeB magnet machining tools: centerless grinding, spheronization machine, double-end grinding, flat grinding, slicer, double-sided grinding, wire cutting, Tianjin high-speed, West Lake bench drill, special-shaped grinding, etc.