Shanghai King-Nd Magnet Co., Ltd.
NdFeB Magnet Manufacturer Since 2008
NdFeB Magnet Manufacturer Since 2008
Continuous innovation in grain refinement, grain boundary diffusion and low rare-earth magnet technology to improve magnetic performance and optimize raw material cost
We focus on the independent research and development of sintered NdFeB preparation technology. Through grain refinement, grain boundary diffusion and low heavy rare earth formula development, we can stably produce high coercivity, high temperature resistant magnets while reducing the consumption of heavy rare earth resources.
SC Grain Refinement Core Control Process
HD Intergranular Crushing
JM Fine-Grain Grinding Low-Grain Powder Production
Sintering Grain Control Low-Temperature Long-Time Sintering
| Item | Traditional Technology | GRF-1 | GRF-2(Current) | GRF-3 |
|---|---|---|---|---|
| Grain Size (μm) | 6-10 | 5-8 | 3-6 | 2-3 |
| Powder Size (μm) | 3-5 | 2.5-3.5 | 2-3 | 1-1.5 |
Adjust Cooling Rate Increase Columnar Grain Proportion
Adjust Casting Temperature Reduce Columnar Grain Size
Adjust Copper Rod Rotation Speed Decrease Strip Thickness
By adjusting component matching and grain boundary diffusion, cerium-containing magnets achieve the same magnetic properties as non-cerium magnets.
Component Matching/Regulation + Grain Boundary Diffusion
Low-temperature heat treatment technology to promote the formation of beneficial phases
Adding Cu and Ga to improve microstructure, forming Nd6(FeCuGa)14 phase, enhancing de-exchange coupling and coercivity
Types and dosage of fine powder additives, debinding time
Inhibit α-Fe precipitation and precise control of impurity composition
Features: Suitable as medium-performance, cost-effective magnets and ideal as infiltration substrates for high-performance magnets
Share your working temperature, coercivity and cost requirements, our R&D team will recommend the optimal magnet technology route.