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Rainbow Magnet Ltd.
Rainbow Magnet Ltd.  

Gold Index: 16481

You are here: home  > Ndfeb Magnet  > Neodymium Ring Magnets  > Permanent neodymium Iron Boron ring magnets black epoxy coat

Permanent neodymium Iron Boron ring magnets black epoxy coat 

Price: 0.1~10.0 USD 
Payment Terms: T/T,L/C,WU 
Place of Origin: Zhejiang, China (Mainland) 
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Product Detail

Model No.: RM-R04
Production Capacity: 100ton/month
Delivery Date: 4 weeks
Type: Permanent
Brand Name: rainbow magnet
Grade: N/M/H/SH/UH/EH
Means of Transport: Ocean,Land,Air
Packing: standard carton by sea or b...
Application: Speaker Magnet
Composite: Neodymium Magnet
Shape: ring

1) Black epoxy coating neodymium magnet rings.
2) huge size up to 220mm diameter
3) excellent performance and high corrosion resistance


permanent neodymium Iron Boron ring magnets is made from an alloy of neodymium, iron, and boron to form the Nd2Fe14B tetragonal crystalline structure. This material is currently the strongest type of permanent magnet in the world.

The ring manget is one regular and popular shape of sintered neodymium magnet.

The neodymium disc magnet is mainly usedin auto speakers.

Mostly of rare earth permanent magnet always work do not at room temperature or under vacuum, in order to keep the accuracy of shape size and avoid the Corrosion and oxidation, we must make the coating on the surface.

attached picture show black epoxy coatingring magnet

The main physical properties of sintered NdFeB black epoxy coatingring magnet:
magnetic properties
Density /g.cm3
VickersHardness HV
Resistivity /υΩ.cm
Coefficient of ThermalExpansion (C⊥)/K-1
Coefficient of ThermalExpansion (C∥) /K-1

The advantage of magnet is high cost-effective, with good mechanical properties, easy cutting; according customer's demand to manufacture in a wide range of shapes, sizes and grades.
Also have high Br,high Hcj,high (BH)max,and high stability become the important material of the world.
The shortcoming is the low of the Curie temperature and the temperature characteristics, easy to rust, oxidation, Sintered NdFeB's surface is usually required for plating such as zinc, nickel, silver, gold, etc., can also be done phosphorus treatment or spray epoxy resin to slow down the oxidation rate.
Nd-Fe-B permanent magnet with its excellent performance, abundant raw material and reasonable price is to be rapid development and wide application.
Also becoming increasingly popular across a wide range of novelty products for markets.

 Ms. Annie

Tel: 86-574-87840198
Fax: 86-574-87393806
Mobile: 86- 189 5744 9606
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Company Info

Rainbow Magnet Ltd. [China (Mainland)]

Business Type:Manufacturer
City: Ningbo
Province/State: Zhejiang
Country/Region: China (Mainland)

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