Product Overview
The high coercive force cube magnets are high-performance permanent magnets featuring a design for secure mechanical fastening. It is manufactured using high-grade NdFeB material (e.g., N35–N52) and coated with triple-layer nickel plating (Ni-Cu-Ni), significantly improving corrosion resistance and surface durability. It is ideal for applications requiring both strong magnetic performance and robust mechanical mounting.
Technical Parameters
|
Product Name |
high coercive force cube magnets |
|
Magnet Grade |
N38 (Br ≥ 13.2 KGs, Hcj ≥ 10.8 KOe) |
|
Dimensions |
L6x2x0.5 |
|
Dimensional Tolerances |
Length ±0.05mm, Width ±0.05mm, Thickness ±0.05mm |
|
Working Temperature |
≤ 80°C (custom high-temperature versions available) |
|
Density |
≥ 7.5 g/cm³ |
|
Surface Magnetic Field |
1500 Gauss (measured with TM-801 Gauss meter, Japan) |
|
Magnetic Flux |
1.7 mWb (measured with fluxmeter) |
2.1 Magnetic Performance and Engineering Significance
Temperature Coefficient and Operating Temperature Grade
NdFeB magnets exhibit temperature-dependent magnetic behavior, typically characterized by the temperature coefficient of remanence and coercivity.
As temperature increases, magnetic properties gradually decrease. Therefore, selecting an appropriate operating temperature grade (such as N, H, SH, UH, EH, or AH) is essential to ensure stable performance under service conditions.
Proper grade selection ensures that the magnet maintains sufficient magnetic output and coercivity throughout its intended operating temperature range, avoiding unexpected magnetic losses during operation.
Irreversible Demagnetization Risk and Design Margin
Irreversible demagnetization occurs when the magnet is exposed to conditions that exceed its intrinsic coercivity, resulting in permanent magnetic loss.
Engineering design must account for safety margins against irreversible demagnetization by considering operating temperature, magnetic circuit design, external reverse fields, and material grade selection.
Proper assessment of demagnetization risk is especially critical in high-load motor systems, high-temperature environments, and safety-critical applications where long-term magnetic stability is required.
Manufacturing Process
- Magnetization Process:
Professional pulse magnetization equipment is used to inject strong and stable magnetic fields, ensuring the magnet meets design specifications and performs reliably under high load or high-frequency operation.
- Grinding & Fine Finishing:
Advanced precision equipment grinds the magnet surface to ensure smoothness and tight dimensional tolerances, supporting high-precision industrial applications.
Application Fields
Industrial Automation:
Fixtures, jigs, robotic arms - Square-sunk holes allow secure screw mounting for accurate positioning.
Tools & Equipment:
Positioning of electric tool components; removable magnetic covers for instruments.
Sensors & Detection Devices:
Magnetic sensors, reed switches, and position detectors.
Medical & Electronic Devices:
Mounting of portable medical devices and electronic modules - strong, stable force without interfering with sensitive electronics.
Quality Control System and Standards
- Quality control is implemented throughout the entire manufacturing process, from raw material inspection to final shipment. Each production stage is governed by standardized operating procedures and defined acceptance criteria to ensure consistent product quality.
- Key quality parameters-including magnetic properties, dimensional accuracy, surface condition, and coating integrity-are monitored in accordance with recognized industry standards and customer-specific requirements.
- Continuous process monitoring and corrective action mechanisms are applied to maintain stable quality performance and reduce variation.
Inspection Capability and Traceability
Comprehensive inspection capabilities are established to verify both functional and dimensional conformity. Magnetic performance, dimensional tolerances, coating quality, and appearance are routinely inspected using calibrated measuring and testing equipment.
Each production batch is clearly identified and recorded, enabling full traceability from raw materials through manufacturing, inspection, and final delivery. This traceability system supports root cause analysis, quality audits, and long-term performance tracking.
Customization & Services
- Customized dimensions, shapes, coating layers/thickness/color
- Magnetic polarity and force specification
- Laser engraving for logos or serial numbers
- Encapsulation solutions and pull-force testing for specialized applications
▲ If you require samples, technical datasheets, or certifications such as MSDS, RoHS, ISO 9001, QC080000, IATF 16949, ISO 14001, or ISO 27001, our sales engineers are ready to assist you.
FAQ
Q1. What causes performance variation between production batches?
Answer:Batch variation can result from differences in:
Raw material composition
Sintering density and grain orientation
Magnetization saturation level
Coating thickness and uniformity
Strict process control and batch traceability are essential to maintain consistency.
Q2. Why is pull force not a reliable indicator of overall magnetic performance?
Answer:Pull force depends heavily on test conditions such as surface flatness, steel plate material, air gap, and alignment. It reflects system interaction, not intrinsic material properties like Br or Hcj.
Q3. Can NdFeB magnets be safely machined after magnetization?
Answer:No. Machining magnetized NdFeB magnets is unsafe and can cause cracking, tool damage, or injury. All cutting and grinding operations must be completed before magnetization.
We're here to help!
Phone/WhatsApp/WeChat: +86 13829120676
Email: info@jinconn.com
Website: www.jinconnmagnet.com
Address: Xiaohe Industrial Zone, Daojiao Town, Dongguan City, Guangdong, China
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