permanent neodymium Iron arc magnets

1.0~8.0 USD

Min. Order:	10 Piece/Pieces
Trade Term:	FOB
Payment Terms:	L/C, T/T, WU
Supply Ability:	100TON/MONTH
Place of Origin:	Zhejiang

Company Profile

Rainbow Magnet Ltd.

Location:	Ningbo, Zhejiang, China (Mainland)
Business Type:	Manufacturer

Product Detail

Model No.:	RM-Arc 03
Means of Transport:	Ocean, Air, experess
Application:	Motor Magnet
Type:	Permanent
Composite:	Neodymium Magnet
Brand Name:	rainbow magnet
Shape:	Arc with special shape
Grade:	N/M/H/SH/UH/EH/AH
Production Capacity:	100TON/MONTH
Packing:	standard air cartons or sea package according
Delivery Date:	7-30days

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Product Description

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 needMOQ for it.

How to judge the Permanent magnet material properties advantages and disadvantages of standard?

You can see 3 terms:
the magnet -crystalline anisotrop
the Curie temperature.

the magnetization strong

salt spray test results for Ni 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 Arc 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

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

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

permanent neodymium Iron arc magnets have 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.

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

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.

permanent neodymium Iron arc 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.

APPLICATION:

instrumentation,

electro-acoustic motor,

magnetic magnetization device

micro motors,

electronic industry,

automobile industry,

petrochemicals,

nuclear magnetic resonance device,

sound device magnetic suspension system,

magnetic transmission machine