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Rainbow Magnet Ltd.
Rainbow Magnet Ltd.  

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ndfeb magnet manufacturers China suppliers 

Price: 0.01~8.0 USD 
Payment Terms: T/T,L/C,WU 
Place of Origin: Zhejiang, China (Mainland) 
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Product Detail

Model No.: RM-R17
Production Capacity: 100TON/MONTH
Delivery Date: 7-30days
Type: Permanent
Brand Name: rainbow magnet
Means of Transport: Ocean,Air;experess
Packing: standard air cartons or sea...
Application: Speaker Magnet
Composite: Neodymium Magnet
shape: ring

The advantage is high cost-effective, with good mechanical properties, easy cutting


Neo round slice Magnet ring

A neodymium magnet (also known as 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.
This Sintered NdFeB magnet is coated with Titanium (Ti),
,the magnetized through the axial direction.
Nd-Fe-B permanent magnet is manufactured in a wide range of shapes, sizes and grades according customer's demand.
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.
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 magnetic field stability is important, the higher the coercivity of the permanent magnet alloy in other conditions as well as by the smaller the losses caused by external magnetic interference
The grade and its details properties, pls see follow table.
Sintered NdFeB magnetic energy parameters
Note: The above mentioned data of magnetic parameters and physical are given at 20℃±2℃
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
N35M
1.17-1.21
11.7-12.1
892-915
11.2-11.5
≥1114
≥14
263-279
33-35
≤100
N38M
1.22-1.26
12.2-12.6
907-931
11.4-11.7
≥1114
≥14
287-303
36-38
≤100
N40M
1.26-1.29
12.6-12.9
907-947
11.4-11.9
≥1114
≥14
303-318
38-40
≤100
N42M
1.30-1.33
13.0-13.3
907-947
11.4-11.9
≥1114
≥14
318-334
40-42
≤100
N45M
1.33-1.37
13.3-13.7
907-955
11.4-12.0
≥1114
≥14
334-358
42-45
≤100
N48M
1.36-1.42
13.6-14.2
907-955
11.4-12.0
≥1114
≥14
358-382
45-48
≤100


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

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,
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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