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Rainbow Magnet Ltd.
Rainbow Magnet Ltd.  

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Permanent neodymium Iron Boron ARC magnets 

Price: 1.0~5.0 USD 
Payment Terms: T/T,L/C,WU 
Place of Origin: Zhejiang, China (Mainland) 
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Product Detail

Model No.: RM-Arc 02
Production Capacity: 100TON/MONTH
Delivery Date: 7-30days
Type: Permanent
Brand Name: rainbow magnet
Grade: N35SH/38SH/40SH/42SH
Means of Transport: Ocean,Air;experess
Packing: standard air cartons or sea...
Application: Motor Magnet
Composite: Neodymium Magnet
Shape: Arc,segment
Material: NdFeB

1) difference radian and size according customer demand
2) various grade:N/M/H/SH/UH/EH/AH
3) high quality with best price
4) stable properties.

Arc sintered NdFeB magnet  is made from an alloy of neodymium, iron, and boron to form the Nd2Fe14B tetragonal crystalline structure.

This material s 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.
Arc sintered NdFeB magnet has high Br,high Hcj,high (BH)max,and high stability,can pick up 660 times of own weight of heavy objects.
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.
See the follows Grade SH Arc sintered NdFeB magnet  magnetic energy:
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
N30SH
1.08-1.12
10.8-11.2
804-844
10.1-10.6
≥1592
≥20
223-239
28-30
≤150
N33SH
1.14-1.17
11.4-11.7
820-876
10.3-11.0
≥1592
≥20
247-263
31-33
≤150
N35SH
1.17-1.21
11.7-12.1
860-907
10.8-11.4
≥1592
≥20
263-279
33-35
≤150
N38SH
1.22-1.26
12.2-12.6
907-947
11.4-11.9
≥1592
≥20
287-303
36-38
≤150
N40SH
1.26-1.29
12.6-12.9
907-947
11.4-11.9
≥1592
≥20
303-318
38-40
≤150
N42SH
1.30-1.33
13.0-13.3
907-947
11.4-11.9
≥1512
≥19
318-334
40-42
≤140

The main physical properties of permanent neodymium Iron arc magnet:
compare NdFeB and SmCo:the magnetic properties of rare earth magnet:
item
Js/T
(BH)m
/KJ.m-3
HA
/MA.m-1
Tc/℃
RE/TM
TM
Nd2Fe14B
1.61
528
6
310
0.117
Fe
SmCo5
1.15
248
32
740
0.166
Co
Sm2Co17
1.56
480
8
890
0.105
Co

NdFeB arc 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

Arc sintered NdFeB magnet :


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 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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