This high adhesive force permanent stable Black Epoxy coated lightweight Badge Clip shaped Magnet with N35-52 grade, featuring extremely high magnetic strength, excellent demagnetization resistance, and precise dimensional accuracy.
High adhesive force permanent Black Epoxy coated Badge Clip shaped Magnet
1. Product Overview
This high adhesive force permanent stable Black Epoxy coated lightweight Badge Clip shaped Magnet with N35-52 grade, featuring extremely high magnetic strength, excellent demagnetization resistance, and precise dimensional accuracy. The product's precision can be customized according to customer requirements. Its sophisticated ring-shaped design meets high-performance magnetic needs in compact spaces, making it widely applicable in high-end electronic devices, audio equipment, premium perfume bottle caps, and other fields.
The industrial grade high adhesive force permanent Black Epoxy coated Badge Clip shaped Magnet is manufactured using advanced wire cutting, center-less grinding, and double-disc grinding processes, ensuring neat edges and uniform dimensions. Surface treatment includes multi-layer metal coating (Ni+Cu+Ni) or optional Zn coating, effectively preventing oxidation and corrosion from environmental factors, thereby extending the product's service life.
2. Technical Specifications:
Product Name | High adhesive force permanent Black Epoxy coated Badge Clip shaped Magnet |
Material Grade | N52 (Br ≥ 14.2 kGs, Hcj ≥ 12 kOe) |
Dimension | D4x1.5 mm and L10x8x4.5 mm |
Dimensional Tolerance | ±0.05 mm (length/width/thickness) |
Operating Temperature | ≤80℃ (high-temperature versions customizable) |
Density | ≥7.5 g/cm³ |
Surface Magnetic Field | 3600 ± 200 Gauss (measured with Japanese TM-801 Gauss meter)
|
Magnetic Flux Value | 2.3 mWb (measured with fluxmeter) |
3. Manufacturing Process
The high adhesive force permanent Black Epoxy coated Badge Clip shaped Magnet is manufactured through the following key processes:
l Wire Cutting: Uses molybdenum/copper wire cutting equipment to achieve ±0.02mm precision for small-batch custom rings.
l Centerless Grinding: Refines inner and outer diameters to ensure roundness (±0.05mm tolerance).
Double-Disc Grinding: Controls thickness and parallelism.
4. Surface Treatment and Coating Technology
To enhance corrosion resistance and appearance quality, the following surface treatment solutions are adopted:
l Default Coating: Triple-layer nickel-copper-nickel (Ni-Cu-Ni). Coating can be customized according to customer requirements.
l Coating Thickness Standard: Ni (3μm) + Cu (5μm) + Ni (4μm). Coating thickness can be customized as needed.
l Optional Coating: Single-layer zinc (Zn 5μm) for cost-sensitive projects.
Coating Features:
l Resistant to salt spray corrosion and improved oxidation resistance.
l Increased surface hardness to prevent scratches.
Enhanced appearance glossiness, suitable for exposed components.
5. Appearance and Dimensional Inspection Standards
To ensure consistent and reliable product quality, all products undergo the following inspection processes:
Manual dimensional inspection with micrometers/calipers.
Visual inspection (under 800-1200 lumen lighting at 20-30 cm standard inspection distance).
2D image measurement for precise dimensional verification.
Automated CCD sorting and full inspection of product appearance and dimensions.
Magnetic flux testing to ensure batch consistency of magnetic performance.
6. Reliability Testing:
l Neutral Salt Spray Test (NSS):
Temperature: 35℃ ±2℃
Salt spray deposition rate: 1~2 ml / 2000px²·h
pH value: 6.5 ~ 7.2
Test duration: 24h / 48h / 72h / 96h (can be set according to application scenarios/customer requirements).
l Thermal Demagnetization Test:
Placed in a constant-temperature oven (80℃) for 2 hours (test duration can be adjusted per customer requirements).
Demagnetization rate ≤10% is considered qualified.
Simulates thermal stability in real-world applications.
l Drop Test Notice:
This product is not suitable for drop tests as neodymium magnets are brittle and strong impacts may cause chipping or cracking.
7. Packaging Process and Instructions
In compliance with magnetic product transportation requirements, we implement professional packaging methods:
l Defective items in appearance and dimensions are removed.
l Qualified products are uniformly magnetized and neatly arranged.
l Customized box quantities and labels per customer requirements.
l Each box is vacuum-packed with magnetic shielding plates and shock-absorbing pads.
l Small boxes are packed into master cartons with moisture, impact, and magnetic interference protection.
Packaging methods can be customized.
8. Application Fields:
This product is widely used in:
Hospitality & Service Industries:
Staff in hotels, restaurants, and other service industries use magnetic badges for a clean look and easy identification, enhancing customer service experiences.
Educational Institutions:
Teachers and school staff utilize magnetic badges during parent-teacher meetings and school events, ensuring clear identification without damaging attire.
Conferences & Trade Shows:
Attendees and organizers at conferences and trade shows prefer magnetic badges for their ease of use and the professional image they project.
Corporate & Office Environments:
In corporate settings, magnetic name badges provide a professional appearance without damaging clothing, making them ideal for daily office wear and client meetings.
9.Usage Precautions:
l Handle with care: Neodymium magnets are brittle—avoid impacts or drops.
l Avoid pinching: Always slide magnets apart instead of pulling directly.
l Store properly: Keep away from high temperatures, humidity, and corrosive environments.
l Safety warning: Keep strong magnets away from electronic devices, credit cards, and medical implants like pacemakers.
10. Customization and Services:
We support various customization services:
l Size, shape, and coating (layer count, thickness, color) customization.
l Polarity direction and magnetic strength adjustment.
l Laser-engraved logos or serial numbers.
Special application packaging solutions and pull-force testing support.
If you need any solution for your mobile, speaker or robotics project technical data sheet，please feel free to contact our sales engineers, we are always ready to assist you!
Please contact us for free samples, magnet customization solutions, and MSDSRoHS, ISO 9001, QC080000, IATF 16949, ISO 14001, ISO 27001 or other relevant certificates! .
Contact Us
Phone/WhatsApp/WeChat: +86 18038225892
Email: helen@jinconn.com
Address: Xiaohe Industrial Zone, Daojiao Town, Dongguan City, Guangdong Province, China
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