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Rainbow Magnet Ltd.
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permanent rare earth material magnet. abnormity NdFeB magnet 

Price: 0.01~10.0 USD 
Payment Terms: T/T,L/C,WU 
Place of Origin: Zhejiang, China (Mainland) 
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Product Detail

Model No.: RM-I11
Production Capacity: 100TON/MONTH
Delivery Date: 7-30days
Type: Permanent
Brand Name: rainbow magnet
grade: N/M/H/SH/UH/EH/AH
Means of Transport: Ocean,Air;experess
Packing: standard air cartons or sea...
Application: Industrial Magnet
Composite: Neodymium Magnet
shape: abnormity

we can make the abnormity shapes magnet according to customers' requirment or design.

neodymium 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.
This speical shape magnet is Sintered NdFeB magnet.
Nd-Fe-B permanent magnet is manufactured in a wide range of shapes, sizes and grades according customer's demand.
NdFeB speical shape magnet has a very high energy product and coercivity, can pick up 660 times of own weight of heavy objects.
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 easy to rust, oxidation, so the 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.
The EH grade and its details properties, pls see follow table.
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
N28EH
1.04-1.08
10.4-10.8
780-812
9.8-10.2
≥2388
≥30
207-223
26-28
≤200
N30EH
1.08-1.12
10.8-11.2
804-844
10.1-10.6
≥2388
≥30
223-239
28-30
≤200
N33EH
1.14-1.17
11.4-11.7
820-876
10.3-11.0
≥2388
≥30
247-263
31-33
≤200
N35EH
1.17-1.21
11.7-12.1
860-907
10.8-11.4
≥2388
≥30
263-279
33-35
≤200
N38EH
1.22-1.26
12.2-12.6
860-907
10.8-11.4
≥2388
≥30
287-303
36-38
≤200

Note: The above mentioned data of magnetic parameters and physical are given at 20℃±2℃



The main physical properties of sintered NdFeB speical shape magnet:
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

APPLICATION:
magnetic transmission machine
magneto therapy equipment
high performance motors,
brushless DC motors,
generators,
magnetic separation,
magnetic resonance imaging,
sensors
loudspeakers
headphones,
hearing aids,
voice coil motors,
magnetic vibrators,
vibrating motors,
permanent magnet motors,
magnetic thrust axis,
magnetic machinery,
magnetic spring,
magnetic vibration device
magnetic connection,
magnetic drive,
Permanent magnet crane
electromagnetic pumps,
magnetic separators
MRI
magnetic machine
magnetic equipment

speical shape magnet:

Demagnetization curve of 33EH grade in difference temperature:
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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