Nickel plated ring

1. Product Overview

The nickel-plated ring magnet combines outstanding performance with aesthetic appeal. Its robust nickel coating offers excellent corrosion resistance and superior wear resistance, ensuring long-term stability even in harsh environments. Additionally, the glossy, refined surface adds both practical and decorative value. We also provide highly flexible customization services to manufacture ring magnets in various sizes and specifications according to customer requirements, enabling diverse applications across multiple industries.

2. Technical Parameters

- Product Name: Nickel-plated Ring Magnet

- Magnetic Grade: N52 (Br ≥ 14.8 KGs, Hcj ≥ 10.5 KOe)

- Dimensions: D10–D5 × 1.5 mm

- Tolerances: Length ±0.05 mm, Width ±0.05 mm, Thickness ±0.05 mm

- Working Temperature: ≤ 80℃ (High-temperature versions customizable)

- Density: ≥ 7.5 g/cm³

- Surface Magnetic Field: 1600 Gauss (measured using Japan TM-801 Gaussmeter)

- Magnetic Flux: 1.10 mWb (measured with fluxmeter)

3. Manufacturing Process

The product is manufactured through the following key processes:

Wire Cutting: Uses molybdenum/copper wire cutting equipment to achieve ±0.02mm precision for small-batch custom rings.

Centerless Grinding: Refines inner and outer diameters to ensure roundness (±0.05mm tolerance).

Double-Disc Grinding: Controls thickness and parallelism.

 4. Surface Treatment & Plating Technology

To improve the magnet's corrosion resistance and appearance quality, the following surface treatment solutions are adopted:

Default Coating: Three-layer nickel-copper-nickel (Ni-Cu-Ni), customizable according to customer requirements

Coating Thickness Standard: Ni (3μm) + Cu (5μm) + Ni (4μm), customizable according to customer needs

Optional Coating: Precious metal gold/silver coating with excellent conductivity and corrosion resistance

5. Appearance & Dimensional Inspection Standards

To ensure consistent product quality and reliability, all products undergo the following inspection procedures:

- Manual measurement using micrometer/caliper

- Visual inspection (light intensity 800–1200 lumens, 20–30 cm inspection distance)

- 2D vision measurement system (for irregular and non-standard structures)

- CCD smart sorting machine for full inspection of appearance and dimensions

- Magnetic flux inspection (ensuring consistent batch magnetic performance)

6. Reliability Testing

Environmental Adaptability Tests

- Temperature Test: Magnets are exposed to high and low temperature cycles (e.g., -40℃ to +80℃) to monitor changes in magnetic and physical properties.

- Humidity Test: Exposure to >90% relative humidity for extended periods to check for rust, corrosion, or magnetism degradation.

- Salt Spray Test: Simulates coastal/marine environments to assess corrosion resistance.

7. Packaging Process and Instructions

Professional packaging practices are applied to meet the transportation requirements of magnetic products:

- Elimination of defective products based on appearance and dimensions

- Approved items are magnetized and neatly arranged

- Quantitative boxing and custom labeling based on customer needs

- Vacuum packaging with anti-magnetic shields and cushioning pads

- Small boxes packed into outer cartons with moisture, impact, and magnetic interference protection

Custom packaging available on request.

8. Application Fields

This product is widely used in:

- High-End Industrial Equipment: Motors and sensors; automation machinery

- Consumer Electronics: TWS earbud magnetic components; smart home magnetic control modules

- Medical & Precision Instruments: MRI shielding parts; lab clamp magnetic bases

- Emerging Fields: New energy vehicles; green energy technology

9. Usage Precautions

- Handle with Care: NdFeB material is hard and brittle; avoid bumps, impacts, or drops.

- Avoid Finger Injuries: Due to strong magnetism, avoid bending; slide to separate magnets.

- Polarity Identification: Install according to magnet head orientation to prevent device malfunctions.

- Moisture & Corrosion Protection: Store away from high temperature, humidity, or corrosive environments.

- Keep Away from Sensitive Equipment: Strong magnets should be kept away from hard drives, IC cards, pacemakers, etc.

10. Customization and Services

We support a wide range of custom services:

- Dimensions, shapes, plating (layers, thickness, color)

- Magnetic direction and strength customization

- Laser engraving of logos or serial numbers

- Special encapsulation and suction testing for unique applications

11.Company Introduction

Dongguan Jinconn New Materials Holdings Co., Ltd specializes in the research, development, production, and sales of high-performance magnetic materials. Upholding the core philosophy of "Technology as the foundation, Quality as the soul," the company is committed to becoming a global leader in magnetic material solutions. Its products are widely used in cutting-edge fields such as new energy vehicles, intelligent manufacturing, electronic communications, automation equipment, and medical devices, earning strong recognition and trust from clients both domestically and internationally.