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Rainbow Magnet Ltd.
Rainbow Magnet Ltd.  

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Neodymium Iron Boron magnet with smaller size thinner magnet 

Price: 0.01~0.1 USD 
Payment Terms: T/T,WU 
Place of Origin: Zhejiang, China (Mainland) 
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Product Detail

Model No.: RM-B18
Production Capacity: 10000000/month
Delivery Date: 10-20 days
Shape: Block
Composite: NdFeB Magnet
material: Neodymium Iron Boron
Means of Transport: Ocean,Air
Packing: air screen packing
Application: Industrial Magnet
Type: Permanent
Brand Name: Rainbow
coating: color Zn

Nd-Fe-B permanent magnet is manufactured in a wide range of shapes, sizes and grades according customer's demand.

NdFeB, (Neodymium Iron Boron magnets Neo magnet), is a type of rare-earth permanent magnet. It 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.
There are three main parameters for magnet
the remanence Br (unit: Gauss), is the magnetic energy to measure the parameters of the magnetic field strength;
coercivity Hc (unit Oersted ) is a measure of the anti-demagnetization ability parameters;
the BH(max) (unit Gauss-Oersted), is how much of the characterization can store energy in a physical quantity.

Neodymium magnet have high Br,high Hcj,high (BH)max,and high stability become the important material of the world.
it has a very high energy product and coercivity, can pick up 660 times of own weight of heavy objects.
Nd-Fe-B permanent magnet is manufactured in a wide range of shapes, sizes and grades according customer's demand.

The advantage 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.
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.
Pic show the magnet with small size 8x5x1mm and coated colored Znic,
See the follows Grade N Sintered NdFeB magnetic energy parameters
Grade
Residual Induction
Coercive Force
Intrinsic Coercive Force
Maximum Energy Product
Maximum Operating
Temperature
Br
Hcb
Hcj
(BH)max
Tw
T
KGS
KA/m
KOe
KA/m
KOe
KJ/m3
MGOe
N35
1.17-1.21
11.7-12.1
876-899
11.0-11.3
≥955
≥12
263-279
33-25
≤80
N38
1.22-1.26
12.2-12.6
876-923
11.0-11.6
≥955
≥12
287-303
36-38
≤80
N40
1.26-1.29
12.6-12.9
876-923
11.0-11.6
≥955
≥12
303-318
38-40
≤80
N42
1.30-1.33
13.0-13.3
876-926
11.0-11.6
≥955
≥12
318-334
40-42
≤80
N45
1.33-1.37
13.3-13.7
876-926
11.0-11.6
≥955
≥12
342-358
43-45
≤80
N48
1.36-1.42
13.6-14.2
876-926
11.0-11.6
≥955
≥12
358-382
45-48
≤80
N50
1.41-1.45
14.1-14.5
828-907
10.4-11.4
≥876
≥11
382-398
48-50
≤70
N52
1.44-1.48
14.4-14.8
828-907
10.4-11.4
≥876
≥11
394-414
49.5-52
≤70

The main physical properties of sintered NdFeB
magnetic properties
Parameters
Density /g.cm3
Vickers Hardness HV
Resistivity /υΩ.cm
Compressive strength/N.mm-2
Coefficient of Thermal Expansion (C⊥)/K-1
Coefficient of Thermal Expansion (C∥) /K-1
7.45
570
150
780
-4.8X10-6
-3.4X10-6


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.
APPLICATION:
instrumentation,
electro-acoustic motor,
magnetic magnetization device
micro motors,
electronic industry,
automobile industry,
petrochemicals,
nuclear magnetic resonance device,
sound device magnetic suspension system,
magnetic transmission machine
generators,
magnetic separation,
bigPhoto
 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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