NdFeB ring magnets.permanent Neodymium magnet ring from China manufacturer

NdFeB ring magnets.permanent Neodymium magnet ring

Price:	0.1~20.0 USD
Payment Terms:	T/T,L/C,WU
Place of Origin:	Zhejiang, China (Mainland)


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Product Detail

Model No.: RM-R15

Production Capacity: 100ton/month

Delivery Date: 4 weeks

Type: Permanent

Brand Name: rainbow magnet

Grade: N/M/H/SH/UH/EH

Means of Transport: Ocean,Land,Air

Packing: standard carton by sea or b...

Application: Speaker Magnet

Composite: Neodymium Magnet

Shape: ring

1) high Br,high Hcj,high (BH)max,
2) high stability
3) black epoxy, white-blue Znic and black Ni coating

The main physical properties of sintered permanent neodymium iron boron magnet:

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

NdFeB has a very high energy product and coercivity, canpick up 660 times of own weight of heavy objects.

The advantage is high cost-effective, with good mechanical properties, easycutting.

Also have high Br,high Hcj,high (BH)max,and high stability become theimportant material of the world.

The shortcoming is the low of the Curie temperature and the temperaturecharacteristics, easy to rust, oxidation, Sintered NdFeB's surface is usuallyrequired for plating such as zinc, nickel, silver, gold, etc., can also be donephosphorus treatment or spray epoxy resin to slow down the oxidationrate.

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

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

APPLICATION:

petrochemicals,

nuclear magnetic resonance device,

sound device magnetic suspension system,

magnetic transmission machine

magneto therapy equipment

high performance motors,

sensors

loudspeakers

headphones,

hearing aids

Sintered NdFeB magnet properties of EH grade:

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	℃
N30SH	1.08-1.12	10.8-11.2	804-844	10.1-10.6	≥1592	≥20	223-239	28-30	≤150
N33SH	1.14-1.17	11.4-11.7	820-876	10.3-11.0	≥1592	≥20	247-263	31-33	≤150
N35SH	1.17-1.21	11.7-12.1	860-907	10.8-11.4	≥1592	≥20	263-279	33-35	≤150
N38SH	1.22-1.26	12.2-12.6	907-947	11.4-11.9	≥1592	≥20	287-303	36-38	≤150
N40SH	1.26-1.29	12.6-12.9	907-947	11.4-11.9	≥1592	≥20	303-318	38-40	≤150
N42SH	1.30-1.33	13.0-13.3	907-947	11.4-11.9	≥1512	≥19	318-334	40-42	≤140