NdFeB magnet arc with sunk hole and zn coating

Price: 1.0~10.0 USD
Trade Term: FOB
Payment Terms: T/T,L/C,WU
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Basic Info.
  • Application: Motor Magnet 
  • Type: Permanent 
  • Composite: Neodymium Magnet 
  • Brand Name: rainbow magnet 
  • Shape: Arc 
  • Grade: 33-52 N/M/H/SH/UH/EH/AH 
  • Model No.: RM-Arc 12 
  • Place of Origin: Zhejiang  
  • Min.Order: 10 Piece/Pieces
  • Means of Transport: Ocean, Air, experess
Supply Capacity
  • Production Capacity: 100TON/MONTH
  • Packing:standard air cartons or sea package according
  • Delivery Date: 20 days
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 magnet in the world.

Pic shows the sintered NdFeB magnet arc with sunk hole and zn coating.


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.
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,such as zinc, nickel, silver, gold, etc., can also be done phosphorus treatment or spray epoxy resin to slow down the oxidation rate.
Sometime, the customers have high demand of NdFeB anti-corrosion, antioxidant, we can design the magnet,add some elements, such as: niobium, vanadium, cobalt and other metal to replace part of the iron to catch the customer requirements of the acid and alkali resistant,antioxidant level, however, because of special material, we need MOQ for it.
We can according your design to make the szie ,shape and coating for you.


Sintered NdFeBmagnet arc with sunk hole and zn coating of 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

Note: The above mentioned data of magnetic parameters and physical are given at 20℃±2℃
The main physical properties of sintered NdFeB magnet arc with sunk hole and zn coating

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

the magnetic properties of rare earth magnet:
compare NdFeB and SmCo
item
Js/T
(BH)m
/KJ.m-3
HA
/MA.m-1
Tc/℃
RE/TM
T
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

The application of permanent magnet material, it is easy to only pay attention to the magnetic properties of materials, the stability of its great importance is not enough, the stability of the material used, including stability, temperature stability, external magnetic field under the action of stability, and ironmagnetic material exposure to the role of stability, stability under mechanical action, the stability of the-ray irradiation, chemical stability and so on.
So when you choose the magnet, pls consider more.
APPLICATION:
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


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Ms. Annie
Tel: 86-574-87840198
Mobile: 86-18957449606
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Contact Method
Rainbow Magnet Ltd.
factory:6# Nijiatan Hi-Tech park; sales office :Room.301-303# North building No 762 Baizhang Road(E), Ningbo, Zhejiang, China (Mainland) / 315040
Fax: 86-574-87393806
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