Explore our premium sintered NdFeB and magnetic assemblies optimized for high-performance industrial applications.
Your Trusted Partner in the World of Advanced Magnetic Solutions Since 1999
Established at the dawn of the millennium, Zhejiang Laysun Magnetics Ltd. has rapidly transitioned from a pioneering tech startup into a national high-tech manufacturing titan specializing in advanced rare earth permanent magnetic solutions.
Our manufacturing processes are engineered to satisfy the rigorous technical specifications of critical fields including automotive electrification (EPS systems and traction motors), industrial automation (voice coil motors, robotics), clean energy, and consumer electronics. Our products leverage the profound magnetic properties of metallic matrices to optimize power density, efficiency, and temperature stability.
How metallurgical microstructures dictate the magnetic performance parameters for OEM design engineers.
In the engineering of electromotors, sensors, and actuators, magnetic properties are not general metrics—they are highly precise metallurgical properties driven by composition and atomic structure. When analyzing the magnetic properties of metal products, engineers primarily evaluate several core magnetic metrics:
| Magnet Grade Category | Remanence (Br) - kGs | Coercivity (Hcj) - kOe | Energy Product (BH)max - MGOe | Max Operating Temp (°C) |
|---|---|---|---|---|
| N35 - N52 (Standard) | 11.7 - 14.8 | ≥ 12.0 | 33 - 53 | 80 |
| N35M - N50M (Medium Temp) | 11.7 - 14.5 | ≥ 14.0 | 33 - 51 | 100 |
| N35H - N48H (High Temp) | 11.7 - 14.1 | ≥ 17.0 | 33 - 49 | 120 |
| N35SH - N45SH (Super High) | 11.7 - 13.7 | ≥ 20.0 | 33 - 46 | 150 |
| N28UH - N40UH (Ultra High) | 10.4 - 12.8 | ≥ 25.0 | 26 - 41 | 180 |
| N28EH - N38EH (Extra High) | 10.4 - 12.5 | ≥ 30.0 | 26 - 39 | 200 |
Aligning raw material reserves and customized metallurgy to support key growth industries worldwide.
Traction motors in modern electric vehicles demand permanent magnets that exhibit remarkable stability under high temperature and magnetic load. By utilizing heavy rare-earth reduction methods, our custom block magnets optimize flux density while conserving Dy/Tb elements to manage procurement costs.
Precision servo motors and collaborative robots require miniature NdFeB ring and block magnets with tight dimensional tolerances. We utilize precision grinding, multi-wire slicing, and customized magnetizing orientations to meet exact OEM mechanical design specifications.
Voice Coil Motors (VCMs) in camera focusing modules and precision positioning stages require clean magnetic fields. Our high-grade thin-plate sintered magnets deliver uniform flux distributions and low-degassing surface finishes.
How Zhejiang Laysun Magnetics achieves superior performance while mitigating supply-chain cost volatility.
Standard high-coercivity NdFeB magnets historically required alloying heavy rare earths like Dysprosium (Dy) or Terbium (Tb) throughout the entire magnet matrix. This process significantly increased material costs and reduced remanence.
Laysun Magnetics' Grain Boundary Diffusion (GBD) technology diffuses Dy/Tb into the magnet's grain boundaries after sintering. This focuses these expensive elements where they prevent demagnetization, boosting coercivity without decreasing overall remanence.
This technology helps Laysun optimize the magnetic properties of metal products while shielding clients from raw material price swings, offering stable pricing for our custom products.
Where our advanced permanent magnets and customized metal assemblies are deployed globally.
Ensuring compliance with rigorous automotive, industrial, and safety standards globally.
At Zhejiang Laysun Magnetics Ltd., quality management underpins our entire production flow. Our rare earth materials and magnetic components conform strictly to international benchmarks, satisfying top-tier industrial performance metrics.
Our factories comply with standard international regulatory frameworks to ensure smooth integration into global supply chains:
Get answers to common technical, commercial, and logistical questions regarding rare earth magnets.
Since permanent magnets are highly specialized, unit prices depend heavily on raw material indices (Neodymium, Dysprosium, Cobalt), dimensional tolerances, coating types, and ordering volumes. To receive an accurate pricelist, please provide the desired Grade (e.g., N35H, N52), dimensions with tolerances, coating preference (NiCuNi, Zinc, or Epoxy), and monthly/annual quantity forecasts.
Standard NdFeB is prone to corrosion. The most common solution is multi-layered Nickel-Copper-Nickel (Ni-Cu-Ni) plating. For outdoor or high-humidity environments, we recommend black or grey Epoxy coating, which offers excellent salt spray resistance (up to 48–96 hours). For extreme environments, specialized coatings like Everlube or Teflon are available.
Grain Boundary Diffusion (GBD) decreases the required volume of heavy rare earths (Dy/Tb) by focusing them on the grain boundaries. This allows the magnet to achieve high operating temperatures (UH, EH, AH grades) while keeping raw material costs lower compared to conventional co-melting methods.
Sample fabrication typically requires 10 to 15 days, while bulk OEM runs take 20 to 30 days depending on shape complexity. Laysun Magnetics offers sea, air, and express delivery methods, along with professional magnetic shielding packaging to ensure safe customs clearance and air transport.
Headquartered in Hangzhou, China, with our production base in Suining, Sichuan, Laysun Magnetics operates worldwide sales networks to serve our international customer base.
Request quotation spreadsheets, custom engineering blueprints, or physical test samples. Our technical sales team will reply within 24 hours.
Complete your sourcing specifications with our specialized industrial pot magnets, block magnets, and phone circle rings.
Laysun Magnetics
