Konferenz
27.07.2025 – 31.07.2025
27.07.2025 – 31.07.2025(Tokyo UTC +09:00)
Tsukuba, Japan / Booth #11 and #12
REPM
Event Website
28th International Workshop on Rare Earth and Future Permanent Magnets and Their Applications
NETZSCH will participate in REPM 2025, the 28th International Workshop on Rare Earth and Future Permanent Magnets and Their Applications, held from July 27 to 31, 2025, at the Tsukuba International Congress Center in Japan.
The workshop brings together researchers and engineers working in the field of rare-earth and future permanent magnets. Topics include raw materials and supply chains, magnet processing and properties, rare-earth-free magnets, recycling, advanced characterization, as well as simulation and application-focused research.
Fine Grinding and Classifying of Rare Earth Alloys
The manufacturing process of rare earth (RE) magnets involves a series of steps including grinding, pressing, and sintering of the material powder. Among these, grinding is a crucial process that determines the particle size distribution and morphology of the RE alloy powder, which in turn influences the quality and performance properties of the magnets produced from the powder.
NETZSCH has developed a grinding process for RE alloy powders, specifically Nd-Fe-B powders, that offers several advantages over conventional fluidized bed jet mills. The new process involves a high-performance classifier that is capable of removing undesirable fine-grained particles (< 1 μm) and achieving a d90/d10 value that is only about half of that produced using conventional methods. The use of these powders with a narrow particle size distribution in the production of sintered magnets leads to a significant improvement of the magnetic properties such as higher coercivity and knee-field strength.
