NdFeB Magnets

We are the rare earth ,sintered ndfeb magnet,neodymium magnet,wind generator magnet manufacturer.

We produce Cylinder NdFeB magnets/Cylinder Sintered NdFeB Magnets

The Cylinder NdFeB Magnets/Cylinder Neodymium Magnet we are supplying are with following t specifications:

1.   Sintered NdFeB Magnets with different grades of: N35,N38,N40,N42,N45,N48,N50,N52(M,H,SH,UH,EH,AH) etc.

2.   Working temperature for Sintered NdFeB Magnets: from 80 degree centigrade to 230 degree centigrade.

3.   Can be magnetized according to the requirements of clients.( thickness, width, length...)

4.   Coatings: Ni, Zn, epoxy, gold, silver, Cu and so on(as per the requirements).

5.   NdFeB Magnetic Material has super strong magnetic force and high intrinsic coercive force.

6.   With precise tolerance.

Application for cylinder NdFeB Magnets/Cylinder Neodymium Magnet:
Magnetic separator, Sensors, Wind generators, Vibration motors, DC motors, Servo motors, Linear motors, VCM, MRI, Loudspeakers, Linear actuators, drives, toys, bags, household appliances, microphone  parts, transmission equipments...

Features of cylinder NdFeB Magnets/Cylinder Neodymium Magnet:
Neodymium magnets are mainly made from neodymium ,iron, and boron. It is the ideal magnetic material in the world till now and have been used universally in the world . It has super strong magnetic force and high intrinsic coercive force and after concocting , it can stand very high working temperature, as high as 200 centigrade.

All These special features of NdFeB material make it irreplaceable in the world.

So till now, it has universally been used in electronics, aviation, motors, automobiles, medical apparatus, transmission machine... and even in many details of our everyday life.

We are supplier of NDFEB BLOCK MAGNETS,or call Neodymium block magnet, block sintered NdFeB Magnet, which can be used as fan generator magnets .

1.NdFeB magnet is The strongest power magnets in all of the permanent magnets. Which can be made in different shape, such as Block sintered NdFeB magnet, Disc sintered NdFeB magnet, etc.

2.Material:Sintered Neodymium-Iron-Boron;

3. The material Grade including: N35 to N52;N35M to N50M;N35H to N48H;N35SH to N45SH;N30UH to N40UH,N30EH to N38EH.Also we can suggest the grade according to where the magnets will be used according to our customer's request.

4. Advanced techniques: Utilizes new Sintered NdFeB magnet techniques and equipment such as strip casting, HDDR technology in our factory to allow us to make high performance NdFeB over N52 possible.

5. The Excellent strength value: the highest (BH)max reaches up to 51MGOe.

6. The Extremely Resistance to demagnetization with Hci,the intrinsic coercive force is over 30000Oe.Neodymium magnet loss -0.09~-0.13% on Br/°C;

7. The moderate temperature stability, their working stability is under 80  degree centigrade for low Hci for NdFeB magnet and above 200 degree centigrade for high Hci NdFeB magnet.

8.Various shapes and sizes or according to customers' requirement; Also we can design the size for our customer's request.

9.Effective Surface treatment to prevent corrosion, such Nickel coating(Ni-Cu-Ni coating);Zinc coating, gold coating, silver coating, tin(Sn) coating, epoxy coating, chemical coating, parylene coating, and so on;

10.Widely used in different application, such as sensors, Motor,rotors, wind turbines/wind generators, loudspeakers, magnetic hooks, magnetic holder, filters automobiles and so on;

11.The quality control: we have our large and expert quality control department and we ensure the magnets ( block sintered NdFeB Magnet,block Neodymium Magnet) from our factory are in high quality.

12.We will provide our customers the test report and BH curves for each item magnets, and also we can do the PCT test ,salt spray test report, aging test report and provide the test report and so on according to our customer's request.

Temp. Coeff.of Br:    -0.11%/℃      

De nsity:     7.3 –7.5g/cm3  

Vickers Hardness:   600Hv

Tensile Strength:     8.0kg/mm2 

Specific Heat :        0.12 kCal/(kg,℃

Young's. Modulus:   1.6×10(11)N/m2

Poisson's.Ratio  0.24 

Curie Temperature   310-340℃  

Temp.Coeff.of Hc:      -0.60 % /℃

Electrical Resistivity 114μΩ..cm

Flexural Strength:  25kg/mm

Coeff. Of Thermal Expansion: 4×10 -6/℃

Thermal Conductivity:  7.7kcal/(m.h. ℃)

Rigidity:  0.64N/m2  

Compressibility   9.8×10-12 m2/N

Types of Coatings                                                                                                                          
The coatigns can be divided into two basic groups: metallic and organic. to meet special requirements and on request, double coatings of metal/metal, metal/varnish and a number of special coatings are available

Metallic coatings

Usually, galvanic processes are used for metallic coating.we have

…Zinc coatings (blue passivated or yellow passivated )

…Nickel + Nickel coating

…Nickel + Tin coating

…Nickel + Copper + Nickel coating (available starting from June,1998)

 

Organic coatings

…Nickel + Epoxy coating

…Epoxy coating

Temporary corrosion protection /Surface Passivation

To protect uncoated magnets temporarily, e. g., during transport or storage, Passivation can be made. This protects NdFeB magnets sufficiently against temporary environmental influences, such as a rise in humidity. With this special treatment, magnets can be stored under normal ambient conditions.

Passivated magnets is not suitable to be installed into system without further treament

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