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Rainbow Magnet Ltd.
Rainbow Magnet Ltd.  

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sintered neodymium arc magnets. high temperature are magnets 

Price: 1.0~10.0 USD 
Payment Terms: T/T,L/C,WU 
Place of Origin: Zhejiang, China (Mainland) 
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Product Detail

Model No.: RM-Arc 17
Production Capacity: 100TON/MONTH
Delivery Date: 20 days
Type: Permanent
Brand Name: rainbow magnet
Grade: 33-52 N/M/H/SH/UH/EH/AH
Means of Transport: Ocean,Air;experess
Packing: standard air cartons or sea...
Application: Motor Magnet
Composite: Neodymium Magnet
Shape: Arc

1. high working temperature
2. high corrosion resistance
3. excellent performance
4.difference coating: NiCuNi coating,epoxy coating,Zn coating

 Neodymium Iron Boron 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 magnetin the world.
There are two kinds of magnets: Sintered NdFeB magnet and bonded NdFeB magnet.

NdFeB 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.
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.
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
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

Attached picture show the Arc permanent ndfeb magnets with difference coating:
Arc permanent ndfeb magnet in EH grade's properties:
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

Arc permanent NdFeB magnet demagnetization curve of EH grade in difference temperature:



NdFeB,AlNiCo,SmCo,magnetic composition and properties compare as follows:
Type
composition
Magneticproperties
Br/T
Hc
/(Ka/m)
(BH)m/
(kJ/m3)
Tc/℃
Density
g/cm-3
Sinter NdFeB
Nd13.5(Fe,M)bananceB6.1-7.0
1.1-1.4
800-2400
240-400
310-510
7.4-7.6
Bonded
NdFeB
Nd4-13(Fe,M)bananceB6-12
0.6-1.1
800-2100
56-160
310
5.3-6.0
AlNiCo5
8%-12%Al,15%-22%Ni
5%-24%Co,3%-6%Cu.
BalanceFe
0.7-1.32
40-60
9-56
890
7.3
AlNiCo8
7%-8%Al,14%-15%Ni
34%-36%Co,5%-8%Ti,
3%-4%Cu,BalanceFe
0.3-0.44
250-350
25-36
450
7.3
1:5,SmCo
62%-63%Co,38%-37%Sm
0.9-1.0
1100-1540
117-179
720
8.1
2:17,SmCo
Sm(Co0.69Fe0.2Cu0.1Zr0.01)7.2
1.0-1.3
500-600
230-240
800
8.2
Bondedsmco
Sm(Co0.67Fe0.22Cu0.1Zr0.07Ti0.01)7.1
1.0-1.07
800-1400
160-204
810
7.4

picture show the Arc permanent ndfeb magnets:


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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