Explore our premium-grade OEM magnetic assemblies engineered for maximum magnetic flux density and micro-scale efficiency.
High-tensile carbon steel casing housing powerful neodymium blocks, offering 5500 lbs vertical shear resistance for advanced modular precast structures.
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State-of-the-art N52 grade sintered NdFeB arc magnet featuring high-grade multi-layer Ni-Cu-Ni plating for motor and generator rotors.
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Optimized micro-thin NdFeB plates with superior magnetic adhesion, perfect for premium packaging boxes, precision enclosures, and consumer electronics.
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Specifically designed magnetic inserts for holding threaded sockets, conduit pipes, and structural components securely against steel casting beds.
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Heavy-duty engineered dog-bone lifting anchors fabricated for optimal structural load capacity and safe transportation of precast concrete panels.
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Innovative magnetic positioning plates customized to hold PVC and steel pipes during casting, eliminating drilling or welding on the steel formwork.
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Flexible magnetic formwork system utilizing high-performance shuttering magnets integrated with universal and custom-fit adapters.
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Corrosion-resistant rare-earth magnet assemblies for anchoring structural inserts and electrical conduit components inside precast concrete.
Enquire Custom SpecDesigning the strongest smallest magnet demands a rigorous understanding of quantum-level mechanics and material engineering. When miniaturizing magnetics down to sub-millimeter scales, standard scaling laws present a major engineering challenge: magnetic volume decreases cubically ($L^3$), whereas the surface area decreases quadratically ($L^2$). Without high-precision manufacturing, demagnetizing fields will dominate, rendering micro-magnets ineffective.
To achieve ultimate magnetic performance in ultra-compact geometries, we utilize custom-engineered NdFeB (Neodymium-Iron-Boron) compositions. Sintered NdFeB is the most powerful permanent magnet material commercially available today. The intrinsic magnetic properties of NdFeB are governed by its tetragonal crystalline structure ($Nd_2Fe_{14}B$), which exhibits exceptionally high uniaxial magnetocrystalline anisotropy. This anisotropy allows the material to resist demagnetization at incredibly thin profile cross-sections.
The maximum energy product, $(BH)_{max}$, represents the energy density stored in the magnetic field. Our customized OEM N52-grade magnets reach values up to 52 MGOe (415 kJ/m³), ensuring maximum magnetic force per unit volume.
| Grade | Remanence (Br) [kG] | Coercivity (Hcb) [kOe] | Intrinsic Coercivity (Hcj) [kOe] | Max Temp [°C] |
|---|---|---|---|---|
| N35 | 11.7 - 12.2 | ≥ 10.9 | ≥ 12 | 80 |
| N42 | 12.8 - 13.2 | ≥ 11.5 | ≥ 12 | 80 |
| N52 | 14.3 - 14.8 | ≥ 11.2 | ≥ 11 | 80 |
| N45SH | 13.2 - 13.7 | ≥ 12.5 | ≥ 20 | 150 |
| N38UH | 12.2 - 12.6 | ≥ 11.3 | ≥ 25 | 180 |
As a leading OEM supplier, we realize that catalog products rarely fit the specific architectural and space constraints of state-of-the-art applications. Miniature magnets are vital components in sensors, medical implants, micro-actuators, automotive steering columns, and high-frequency communication electronics. Our manufacturing line uses advanced engineering techniques to optimize micro-magnet performance:
1. Geometrical Slicing and Machining: Unlike conventional larger components, the smallest magnets cannot be pressed to size. Instead, we sinter large blocks of isotropic and anisotropic NdFeB in vacuum furnaces, followed by high-speed inner diameter (ID) diamond-wheel slicing, wire EDM, and micro-grinding. This allows us to achieve thin, durable walls without initiating micro-fissures in the magnetic structure.
2. Advanced Protective Coatings: Neodymium magnets contain high amounts of iron, making them prone to oxidation and corrosion. For micro-magnets, standard thick coatings are not suitable because they reduce the effective volume of magnetic material. We offer ultra-thin plating technologies, including multi-layer Nickel-Copper-Nickel (Ni-Cu-Ni), chemical vapor deposition (CVD) Parylene, medical-grade gold plating, and specialized Epoxy resins.
3. Custom Magnetic Orientation: Depending on the user intent and design, we customize magnetization directions. Our engineering team can apply axial, radial, multi-pole, and custom diametrical magnetization patterns to small components using custom-wound micro-magnetizing fixtures.
Qianci Magnet (QCM Magnet) is an industry-leading manufacturer of high-performance magnetic fixing solutions, precision magnetic components, and rare-earth assemblies. We offer comprehensive engineering and manufacturing services to meet the strict demands of the precast concrete and industrial automation sectors.
Our core product lineup includes heavy-duty shuttering magnets, formwork magnets, magnetic concrete chamferers, threaded insert magnets, and custom precast fixing components. By replacing mechanical bolting and welding with advanced magnetic fixing systems, our solutions prevent damage to expensive steel casting platforms, lower overall labor costs, and streamline production workflows.
With years of experience in custom magnetic design, QCM Magnet delivers durable, easy-to-use, and highly reliable systems. Our dedicated R&D department consistently introduces innovative magnetic fixing solutions tailored to our customers' application needs.
Sourcing premium permanent magnets requires a highly integrated supply chain. China controls over 80% of the global rare-earth mining, refining, and alloy production capacity. Partnering with a China-based manufacturer like Qianci Magnet offers several strategic advantages:
This robust manufacturing framework allows us to deliver high-performance micro-magnets and heavy-duty precast assemblies, ensuring reliable quality and steady supply for projects worldwide.
Rare-earth magnets are essential across a wide range of modern industries. Below are the key applications where micro-magnets and magnetic assemblies provide critical functionality:
Ultra-thin neodymium discs and rings are the core driving force behind high-fidelity sound in smartphones, wireless earbuds, and hearing aids. High magnetic energy density ensures crisp audio output at micro-scale sizes.
Heavy-duty magnetic fixtures (ranging from 2200 lbs to 5500 lbs) securely hold steel formwork, PVC conduits, and anchoring sockets onto casting beds. This simplifies construction layouts and shortens production cycles.
Brushless DC motors, gyroscopes, and Hall-effect sensors rely on temperature-stabilized NdFeB alloys (such as SH, UH, and EH grades) to provide dependable performance under extreme thermal and mechanical stress.
Our manufacturing facilities adhere to strict international quality control systems, ensuring high performance and traceability across all production runs.
Transporting magnetic materials requires strict adherence to international shipping regulations, particularly for air freight where magnetic fields can interfere with aircraft navigation instruments. As a veteran exporter, QCM Magnet provides professional shielding packaging that keeps external magnetic fields below 0.00525 gauss at a distance of 15 feet, meeting all IATA packaging regulations.
We also support our international partners with customs clearance documentation, regional warehousing options, and engineering consultations. We work alongside your local design teams to assist with finite element method (FEM) simulations, helping optimize magnetic configurations before starting full-scale mass production.
Stay up to date with the latest technological developments in permanent magnets and magnetic fixing systems.
Precast concrete systems: Shuttering molds shape edges and openings on flat surfaces using magnetic fixation, while mold systems support complex three-dimensional structures.
QCM, a global leader in magnetic components, will participate in UK Construction Week 2025. From May 7th to 9th, our team will showcase advanced precast concrete solutions.
Find answers to common engineering, procurement, and logistical questions regarding rare-earth magnets and magnetic fixing solutions.
Select from our high-performance standard items or request custom specifications from our engineers.
Durable magnetic fixtures designed to securely hold electrical junction boxes onto formwork plates during precast concrete casting.
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Threaded magnetic discs designed for easy installation and removal of precast lifting components and embedded anchoring sockets.
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Nickel-plated rare-earth magnets built to high specifications for heavy-duty industrial electric motors, generators, and actuators.
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High-grade alloy steel lifting clutches designed for safe connection and transport of precast concrete panels using dog-bone anchors.
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Compact and cost-effective shuttering magnet with a 600 kg magnetic clamping force, ideal for lightweight precast concrete tables.
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Threaded cup magnets designed to maximize hold on steel beams and plates, featuring a protective steel cup that shields the magnetic field.
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Custom-molded magnetic inserts designed to hold lifting sockets in place during precast concrete block fabrication.
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Heavy-duty NdFeB countersunk pot magnets featuring flat screw holes, ideal for industrial mounting, retail displays, and tooling fixtures.
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