Product Overview & Application Scenarios
This high strength nickel-plating disc magnet is a round strong magnet the size of one yuan coin, the material is sintered NdFeb, the diameter of the magnet is 25mm, the thickness is 2mm, through the direction of 2mm thickness magnetization, tensile strength depends on the performance level, the higher the magnetic property, the greater the pull strength, we can provide spot can also according to your requirements for processing and production parameters, need high temperature resistance, please make a special note.
Technical Specifications
|
Product Name |
nickel-plating disc magnets |
|
Magnet Grade |
N35 (Br ≥11.8 kGs, Hcj ≥12 kOe) |
|
Dimension |
D25*2mm |
|
Dimensional Tolerance |
+/-0.05 |
|
Operating Temperature |
≤80°C (High-temp versions available) |
|
Density |
≥7.5 g/cm³ |
|
Surface Magnetic Field |
2,700 Gs |
|
Magnetic Flux |
2.0 mWb (Fluxmeter-tested) |
Appearance & Dimensional Inspection
● Dimensional & Geometric Inspection
Critical dimensions, tolerances, flatness, and perpendicularity are inspected using precision measuring equipment such as CMM, micrometers, and gauges.
● Surface & Coating Inspection
Coating thickness, adhesion, porosity, and surface integrity are evaluated through thickness measurement, adhesion tests, and visual inspection.
● Environmental & Reliability Testing (as required)
Salt spray testing, thermal aging, and humidity exposure are conducted based on application requirements.
FAQ
Q1. What limits the effectiveness of re-magnetization after thermal exposure?
Answer:
Once grain structure damage occurs due to excessive temperature or demagnetizing fields, re-magnetization cannot restore lost magnetic alignment. Only reversible thermal loss can be recovered.
Q2. How do assembly methods influence magnet lifespan?
Answer:
Press-fitting, welding proximity, or improper adhesive curing temperatures can introduce mechanical stress or localized overheating, accelerating degradation even if initial magnetic values meet specifications.
Q3. Why is salt spray duration alone insufficient to judge corrosion resistance?
Answer:
Salt spray tests simulate accelerated corrosion but do not reflect mechanical stress, temperature cycling, or real joint exposure. Field-specific validation is often required for accurate life expectancy prediction.
Packaging & Transportation
Step 1: Confirm customer packaging requirements
Step 2: Select suitable packing method and materials
Step 3: Apply special protection if needed
Step 4: Custom labeling and marking
Step 5: Packing for air, sea, or land transport
Contact Us：
Phone/WhatsApp/WeChat: +86 13829120676
Email: Info@jinconn.com
Address: Xiaohe Industrial Zone, Daojiao Town, Dongguan City, Guangdong Province, China.
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