Neodymium iron boron 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. Neodymium iron boron magnetic materials are alloys of neodymium, iron oxide, etc. Also known as magnetic steel. Neodymium iron boron has extremely high magnetic energy product and coercive force, and the advantages of high energy density have made neodymium iron boron permanent magnet materials widely used in modern industry and electronic technology, making it possible to miniaturize, lighten, and thin equipment such as instruments, electro-acoustic motors, magnetic separation and magnetization. The advantages of neodymium iron boron are high cost-effectiveness and good mechanical properties; The disadvantage lies in the low Curie temperature point, poor temperature characteristics, and easy pulverization corrosion. It must be improved by adjusting its chemical composition and adopting surface treatment methods to meet the requirements of practical applications. ? ?? ? ? III

Neodymium iron boron 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). In order to obtain different properties, rare earth ND can be partially replaced by other rare earth metals such as dysprosium (Dy) and praseodymium (Pr), while iron can also be partially replaced by other metals such as cobalt (Co) and aluminum (Al). The boron content is relatively small, but it plays a crucial role in forming tetragonal crystal structure intermetallic compounds, resulting in high saturation magnetization, high uniaxial anisotropy, and high Curie temperature of the compounds.

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

Process flow: batching → melting and ingot making/strip throwing → powder making → molding → 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.

Production tools and performance testing tools for neodymium iron boron magnet blanks: including melting furnace, strip throwing furnace, crushing machine, airflow mill, compression molding machine, vacuum packaging machine, isostatic press machine, sintering furnace, heat treatment vacuum furnace, magnetic performance tester, Gaussian meter.

Neodymium iron boron magnet 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