NdFeB oval zn and black epoxy coating Magnets from China manufacturer

NdFeB oval zn and black epoxy coating Magnets

Price:	0.01~10.0 USD
Payment Terms:	T/T,L/C,WU
Place of Origin:	Zhejiang, China (Mainland)


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Product Detail

Model No.: RM-I15

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

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.

automobile industry 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 with NiCuNi,Zn coating,black epoxy coating.

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.

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.

The pic shows some coating,such as

Nickel-Copper-Nickel

Copper (NiCu or NiCuNiCu),

Zinc(blue-white and colored)

Ni-Cu-Ni plus Epoxy,

Epoxy (Black),

Tin (Sn), etc

We can according your demand to coating for your design.

The grade and its details properties, pls see follow table.

Sintered NdFeB magnetic 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

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	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

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:

magnetic transmission machine

magneto therapy equipment

high performance motors,

brushless DC motors,

generators,

magnetic separation,

magnetic resonance imaging,

sensors

headphones,