Engineered with NdFeB Rare-Earth alloys providing maximum force-to-volume ratio for critical industrial applications.
Designed for precast concrete production. Highly efficient modular design utilizing strong integrated neodymium blocks to lock side profiles securely.
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Ultra-strong magnetic fixing cartridge designed for standard casting tables. Carbon steel casing with an integrated on/off mechanical release system.
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Perfect triangular profiles for concrete formwork beveling. Embedded high-flux permanent magnets prevent strip movement under high vibrations.
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Robust steel-jacketed permanent magnet unit offering customizable holding values. Tested under extreme cyclic loading profiles.
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Specialized magnetic circuit configuration designed for high-efficiency electric motors and research applications to concentrate magnetic flux.
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Premium N52 grade sintered NdFeB arc magnet with multi-layer Nickel-Copper-Nickel plating for superior wear and corrosion resistance.
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Modular holding systems equipped with customized mechanical adaptors to fix variable timber or steel profile heights during production.
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Designed for highly corrosive wet environments. Features high-grade stainless steel casing protecting sintered rare earth cores.
View SpecificationsAn engineering insight into structural magnetics, supply constraints, and optimized industrial integration.
In modern manufacturing, miniature and compact magnetic systems act as vital components in advanced technology. Globally, industrial sectors are demanding increased power density within smaller physical footprints. High-power miniature magnets—primarily composed of Neodymium-Iron-Boron (NdFeB) and Samarium-Cobalt (SmCo)—represent the pinnacle of high-coercivity permanent magnetic technologies. China, holding over 85% of the global rare-earth refining and processing capacity, serves as the central hub for the design, synthesis, and distribution of these critical components.
Whether integrated into micro-actuators for aerospace navigation, micro-speakers for high-fidelity consumer electronics, or arrayed inside heavy-duty steel casings for precast concrete formwork (such as high-pull shuttering magnets), the performance of these magnets dictates system efficiency, longevity, and safety profiles. Modern system designs require permanent magnets that not only exhibit high remanence ($B_r$) but also sustain high intrinsic coercivity ($H_{cj}$) under harsh operational parameters, including exposure to high vibrations, structural thermal cycling, and aggressive chemical environments.
Understanding the microstructural phases, grading, and anti-oxidation barriers of advanced NdFeB alloys.
The high magnetic energy density of sintered NdFeB is derived from the tetragonal crystalline phase $Nd_2Fe_{14}B$. This specific atomic configuration yields exceptionally high uniaxial magnetocrystalline anisotropy, which aligns the magnetic domains in a singular direction during the pressing process. Our manufacturing pipeline utilizes advanced vacuum induction melting (VIM) to prevent oxygen contamination of the rare earth elements, ensuring that grain boundary phases are strictly managed to eliminate domain wall pinning sites, maximizing the maximum energy product $(BH)_{max}$.
Due to the high iron content (~65%) within the NdFeB alloy, untreated miniature magnets are highly susceptible to corrosion. We implement multi-layered coatings including Nickel-Copper-Nickel (Ni-Cu-Ni), Zinc (Zn), Epoxy, and Gold (Au) plating. For high-wear applications, such as embedded insert magnets or shuttering magnets, we utilize a passivation process followed by a heavy-duty epoxy layer or stainless steel encapsulation (as seen in our precast concrete series), achieving over 120 hours of salt spray resistance (ASTM B117 standards).
| Material Grade | Remanence (Br) [T] | Coercivity (Hcb) [kA/m] | Intrinsic Coercivity (Hcj) [kA/m] | Max Energy Product (BH)max [kJ/m³] | Max Operating Temp (°C) |
|---|---|---|---|---|---|
| N35 | 1.17 - 1.22 | ≥ 868 | ≥ 955 | 263 - 287 | 80 |
| N52 | 1.43 - 1.48 | ≥ 899 | ≥ 875 | 398 - 422 | 80 |
| N38SH | 1.22 - 1.25 | ≥ 907 | ≥ 1592 | 287 - 310 | 150 |
| N45EH | 1.32 - 1.37 | ≥ 987 | ≥ 2387 | 342 - 366 | 200 |
| Sm2Co17 (YXG-32) | 1.10 - 1.15 | ≥ 820 | ≥ 1500 | 240 - 260 | 350 |
QCM Magnet specializes in offering complete magnetic fixing solutions for the production of precast concrete components. Our primary products include Shuttering Magnets and their corresponding accessories, Formwork Magnets, Magnetic Chamfering Strips, and various pre-embedded insert magnets. Utilizing magnetic fixing in precast concrete component production prevents damage to the platform, enhances work efficiency, reduces labor costs, and promotes economic efficiency as the magnetic fixing devices are reusable.
Using our expertise in magnetic components and our extensive experience in supporting the production of precast components, we have developed numerous new and practical magnetic fixing products. Our products come with complete specifications, excellent quality, ease of operation, and long service life. Additionally, we can promptly customize a variety of magnetic fixing parts to meet the diverse needs of our customers. We are willing to share our expertise with you to help you solve your specific application needs for magnetic components.
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Premium grade precast concrete magnetic cartridges, shuttering magnets, and structural holding systems.
Optimized for structural edge forms. Provides reliable holding force on steel platforms with minimal footprint.
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Constructed with high-reliability sintered NdFeB blocks inside a heavy-duty carbon steel shroud.
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High pull force configuration for thick wall panels and heavy structural concrete forms.
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Lightweight formwork magnet designed for automated robotic placement and manual handling systems.
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Ideal for low-height forms. Offers robust mechanical leverage and smooth operation profiles.
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Engineered for massive precast structures. Standard design for European and North American casting tables.
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Maximum power layout with highly optimized internal magnetic circuits and solid steel release buttons.
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A balanced weight-to-performance mechanical shuttering box configured for standard production lines.
Request QuoteHow global industries integrate precision miniature magnetics into complex machinery and systems.
Miniature magnets are vital in Hall effect sensors, reed switches, and linear encoders. By supplying tight magnetic flux tolerances (≤±1%), we ensure high-resolution feedback systems in robotic arms, automated conveyor lines, and smart diagnostic equipment.
In modern architecture, precast elements are standard. Shuttering magnets (such as 2800 lbs or 5300 lbs models) lock modular formwork to casting beds without drilling or welding, protecting the steel tables and reducing cycle times by up to 40%.
For smart devices, the demand is for ultra-thin high-remanence magnets (e.g., N52 disc magnets under 1mm thickness). These allow voice-coil actuators to achieve high acoustic output and tactile responsiveness within extremely constrained internal volumes.
Evaluating next-generation magnetic materials, thermal thresholds, and green extraction processes.
Traditionally, heavy rare earth elements (HREEs) like Dysprosium (Dy) and Terbium (Tb) are added to NdFeB magnets to improve high-temperature performance. Due to raw material volatility, our technical team is focused on grain boundary diffusion (GBD) technology. GBD allows us to diffuse Dy/Tb selectively along the grain boundary junctions rather than throughout the entire matrix, reducing the HREE usage by up to 70% while maintaining thermal stability up to 180°C.
By arranging multiple permanent magnets in a spatially rotating vector configuration (Halbach Array), the magnetic flux can be concentrated on one working face while cancelling the field to near-zero on the opposite face. This approach yields a flux density increase of up to 1.4 times compared to standard configurations. This technology is increasingly used in high-efficiency brushless DC motors, medical equipment, and high-holding force clamping arrays.
Aligning raw material processing, manufacturing precision, and logistics support for global markets.
Qianci Magnet is a strong magnetic component factory, specializing in the production and research and development of formwork magnets, magnetic formwork, insert magnets, magnetic concrete chamferers and other products.
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Our business mainly involves precast concrete magnetic system solutions, helping you to better carry out concrete element production.
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Become a global leading manufacturer and excellent service provider of magnetic solutions for the precast concrete industry.
Explore Strategic RoadmapExplore our latest configurations engineered to optimize production efficiency and structural reliability.
The shuttering magnet for concrete formwork is a proven safe and efficient tool in precast concrete production. It features a 1600kg series with a large magnetic force, reusability, and durability.
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The advantages of 4600 lbs(2100kg) pull force Precast Concrete Shuttering Magnet for Concrete Formwork in product manufacturing are obvious, it can increase productivity and quality improvement.
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This precast magnets with 5300 lbs(2400kg) magnetic force is a popular product in Europe now. Its powerful magnetism can handle a variety of usage scenarios, such as house construction walls.
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The 1300kg vertical tensile force neodymium precast concrete magnet is commonly used to hold the side moldings of precast concrete elements (e.g. flat floor slabs, walls) in place.
View DetailsEnsuring global safety certifications, environmental compliance, and secure delivery logistics.
Our magnets comply with REACH and RoHS regulations, ensuring restrictions on heavy metals and hazardous chemicals are maintained. For defense and aerospace suppliers, we provide full material trace reports for NdFeB source materials.
Due to regulations on magnetic transport, all air and sea consignments undergo double-shielded packaging (IATA packing instruction 953). This ensures external flux leakage remains below 0.00525 gauss at a 15-foot distance, preventing interference with aircraft navigation instruments.
We offer engineering services, utilizing 3D Finite Element Analysis (FEA) to simulate magnetic flux distributions. This helps customers determine the optimal alloy chemistry and geometrical shape before initiating tooling production.
Insights, technical articles, and event updates from the engineering team at QCM Magnet.
Precast concrete systems: Shuttering molds shape edges/openings on flat surfaces using magnetic fixation, while mold systems support vertical structures.
QCM, a global leader in magnetic components, will participate in UK Construction Week 2025 from May 7th to 9th, displaying next-gen magnetic fixings.
Our production facilities maintain strict quality and safety certifications to guarantee consistent batch-to-batch structural performance.
A comprehensive inventory of high-power components tailored for industrial manufacturers and global distributors.
Heavy-duty carbon steel shroud protects rare earth magnets from concrete slurry intrusion and mechanical shock.
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Diametrically magnetized ring configurations, engineered for commercial loudspeakers and high-frequency transducer drives.
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Engineered for high power density. Custom configurations available for diverse automotive, robotics, and medical devices.
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Embedded fixing systems designed to secure lifting sockets, anchors, and conduit boxes to steel forms without penetration.
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High-reliability ferrite arc segments for fractional horsepower electric motors and automotive starter assemblies.
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Countersunk configurations allow for secure mechanical fastening to wooden or non-magnetic surfaces.
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Heavy duty mechanical rigging attachment, specifically rated for lifting and transporting cured precast concrete panels.
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Easy-to-operate magnetic switch system providing secure locking force and damage-free release mechanisms.
View SpecificationsAnswering crucial engineering, metallurgy, and procurement questions for industrial buyers.