Neodymium-Iron-Boron (NdFeB) permanent magnets represent the pinnacle of modern materials science, providing the highest energy product ($(BH)_{max}$) of all commercially available magnetic materials. Since their market introduction, they have revolutionized spatial-efficient engineering designs across transport, production, and consumer domains.
As a national high-tech leader, Zhejiang Laysun Magnetics Ltd. (established in 1999) has continuously innovated at the molecular level, advancing grain structure and surface passivation to resolve thermal stability, degradation, and flux consistency limits. Today, we address complex global requirements with an annual capability of 5,000 tons of high-grade sintered NdFeB magnetics.
Spread across 100,000 m² of specialized fabrication space in Suining, Sichuan, Zhejiang Laysun Magnetics employs 300+ engineering professionals leveraging advanced grain boundary diffusion processes and strict metallurgical controls.
Volatile market prices for heavy rare earths (HREE) like Dysprosium (Dy) and Terbium (Tb) have accelerated research into Dy-free and Dy-reduced NdFeB solutions. By utilizing Grain Boundary Diffusion (GBD) methods, manufacturers can achieve high coercivity ($H_{cj}$) without sacrificing remanence ($B_r$), making these magnets more economical for EV drive systems.
Corporate ESG mandates require circular supply chains. Standard processes are pivoting toward the closed-loop recovery of end-of-life magnetic materials. Developing recycled alloy processing paths while preserving target magnetic alignment profiles remains a major priority for top suppliers.
Aerospace and deep-sea systems demand magnetic components that can operate continuously at temperatures exceeding 200°C without irreversible demagnetization. Selecting specialized passivating coatings, like double-layer epoxy or advanced rubberized encapsulation, prevents failures in corrosive and humid conditions.
Designed with high flux densities for precision camera autofocus modules and disk-drive actuators.
Radial alignment profiles engineered for efficient stator integration in electric vehicles.
Multi-stage nickel-copper-nickel plated structures that offer reliable performance in corrosive conditions.
Sintered powders designed with optimal grain boundaries to minimize eddy currents.
Thin-walled configurations designed for mobile devices and fast wireless charging systems.
Engineered for high coercivity to handle demagnetizing forces under thermal loads.
Precise, axial-magnetized cylinders that deliver consistent holding forces.
Corrosion-resistant magnetic shafts designed for medical devices and industrial sensors.
Fully certified steering assemblies built to withstand mechanical vibrations and thermal shock.
Optimized for magnetic separators and industrial material-handling machines.
Curved profiles that optimize magnetic flux density in direct-drive wind generators.
Designed with close tolerances to integrate seamlessly into mobile phone mounting hardware.
Our primary research focus is on advancing Grain Boundary Diffusion (GBD). Unlike traditional alloying methods that distribute Dysprosium (Dy) or Terbium (Tb) uniformly throughout the magnet, GBD diffuses these heavy rare earths along the grain boundaries. This technique concentrates them where they are most effective at resisting magnetization reversal, optimizing material usage while lowering costs.
Reduces Dysprosium consumption by up to 70% while maintaining thermal operational integrity.
Achieves coercivity levels of 25kOe to 30kOe, enabling stable operation in temperatures up to 220°C.
Preserves mechanical shear strength, which is vital for high-speed rotor applications.
By minimizing slicing waste and refining our precision pressing methods, we manufacture close-tolerance magnets that require minimal machining. This process reduces alloy waste, increases production throughput, and helps lower unit costs for high-volume orders.
We continually test new protective barriers, including electroplated nickel, organic epoxies, and durable rubberized encapsulation. Our coatings pass 1000-hour salt spray tests to ensure long-term durability in marine, automotive, and industrial environments.
Our manufacturing facilities integrate real-time optical sorting and flux mapping systems. Every production batch undergoes automated testing for size, magnetic field strength, and physical defects, ensuring consistent quality and performance.
To serve demanding industries like aerospace, oil & gas, and automotive manufacturing, our facilities operate under strict global quality and safety standards.
We offer comprehensive shipping and logistics support, including custom packaging, air and ocean freight, and warehousing options to ensure timely delivery to your production facilities.
Hangzhou Headquarters & Global Supply Chain Map
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Laysun Magnetics
