Rare Earth Magnet dIsc magnet from China manufacturer - Ningbo Dongsheng Strong Magnet Material Co.,Ltd.

Price:	0.1~0.4 USD
Payment Terms:	T/T,L/C
Place of Origin:	Zhejiang, China (Mainland)


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Product Detail

Model No.: D09

Production Capacity: as customer require one mon...

Delivery Date: 15~30 days

Application: Industrial Magnet

Composite: NdFeB Magnet

Grade: N35~N52

Means of Transport: Ocean

Packing: 100 pieces one small box ,t...

Shape: Disc

Type: Permanent

Brand Name: Dongsheng magnet

Coating: Ni-Cu-Ni, Zn, Black Epoxy, ...

The Curie temperature is high
Shape can be Speaker require
Coating can be Ni-Cu-Ni Zn Black Epoxy and etc

1)Magnetic Material

Grade: N33-N54

35M-50M,

35H-48H,

35SH-45SH,

30UH-40UH

30EH-38EH

3)Plating: Nickel,znic,NICUNI

According the max working temperature, we can divide Sintered magnet to 7 grades, N grade is for 80 ℃,grade M is for 100℃,grade H is for 120℃,grade SH is for 120℃,grade UH is for 150℃ and grade EH is for 200℃,you according your demand to choose the grade which you need.

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.

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.

salt spray test results for coating

Commonly type of coating	Coating thickness(um)				Neutral salt spray test
Commonly type of coating	dark Ni	Cu	Shine Ni	Total	Neutral salt spray test
Single-layer Ni	25			25	24h	normal
Double-layer Ni	12		10	25	72h	better
Dark Ni-Cu–shine Ni	6.25	8.75	10	25	120h	excellent

The main physical properties of sintered NdFeB

magnetic properties

Parameters

Density /g.cm3

VickersHardness HV

Resistivity /υΩ.cm

Compressivestrength/N.mm-2

Coefficient of ThermalExpansion (C⊥)/K-1

Coefficient of ThermalExpansion (C∥) /K-1

7.45

570

150

780

-4.8X10-6

-3.4X10-6

Our products

NdFeB Disc rare earth round magnet

The Introduction of NdFeB Magnets' Applications:

1, Electro-acoustic field: such as loudspeaker, headphone, earphone, stage sound device, alarm, microphone and so on. Because of good performance, our magnets can provide sound equipments better sensitiveness and susceptibility.

2, Electric products: Permanent magnetic actuator vacuum circuit breaker, magneticlatchingrelay, watt-hour meter, watermeter, sensor, reed switch and so on.

3, Motor areas: VCM, CDVD-ROM, generator, electromotor, servo motor, vibration motor, step motor, DC motor, linear motor and so on. Our magnets with stable performance and high HCJ can work under high temperature which can guarantee your products work better.

4, mechanical equipment: magnetic separator, magnetic holder, and other magnetic machines.

5, Health care: nuclear magnetic resonance spectrometer, medical apparatus and instruments,

magnetic therapy and health care products, fuel-saving magnetizer and so on. Our stable permanent magnets used in health care areas will make people healthier.

6, Other fields: bags magnets, toy magnets, craft gifts and packaging, doors and windows magnets, magnetic locks, magnetic holding devices and so on.