Neodymium Iron Boron block magnet from China manufacturer

Price:	1.0~20.0 USD
Payment Terms:	T/T,L/C
Place of Origin:	Zhejiang, China (Mainland)


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Product Detail

Model No.: RM-B09

Production Capacity: 100 ton/month

Delivery Date: 3 weeks

Shape: Block

Composite: NdFeB Magnet

material: Neodymium Iron Boron

Means of Transport: Ocean,Land

Packing: standard carton by sea or b...

Application: Industrial Magnet

Type: Permanent

Brand Name: Rainbow

Neodymium Iron Boron block magnets
Sintered Neo magnets have high Br,high Hcj,high (BH)max,and high stability,become the important material of world

NdFeB 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.

Nd-Fe-B permanent magnet is manufactured in a wide range of shapes, sizes and grades according customer's demand.

permanent magnet block 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 the low of the Curie temperature and the temperature characteristics, easy to rust, oxidation, 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.

Pls see the compare of the coating's results:

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

See the follows Grade N Sintered permanent magnet block 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

For N grade Ndfeb,the Max Operating Temp is 80 degree

Nd-Fe-B permanent magnet with its excellent performance, abundant raw material and reasonable price is to be rapid development and wide application.

Also becoming increasingly popular across a wide range of novelty products for markets.

The use of electro-acoustic devices work:
Speakers, hearing aids, pickups, stereo headset, electro-acoustic sensors, telephone receiver,
Small size, light weight, good sound quality.
Multifunction and miniaturization of mobile phones, high-performance Ndfeb played a key role.

attached pic show the permanent magnet block with Zn coating: