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Rainbow Magnet Ltd.
Rainbow Magnet Ltd.  

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Sintered NdFeB arc magnet.Super strong permanent magnet arc 

Price: 10.0~50.0 USD 
Payment Terms: T/T,L/C,WU 
Place of Origin: Zhejiang, China (Mainland) 
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Product Detail

Model No.: RM-Arc 28
Production Capacity: 100TON/MONTH
Delivery Date: 7-30days
Type: Permanent
Brand Name: rainbow magnet
weight: 200g
Means of Transport: Ocean,Air;experess
Packing: standard air cartons or sea...
Application: Motor Magnet
Composite: Neodymium Magnet
Grade: N35EH
coating: NiCuNi

The advantage is high cost-effective, with good mechanical properties, easy cutting; manufacture in a wide range of of shapes, sizes and grades.

 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.
salt spray test results for coating,NiCuNi coating is better:
Commonly type of coating
Coating thickness(um)
Neutral
salt spray test
dark Ni
Cu
Shine Ni
Total
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 Arc 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

Arc Neodymium Iron Boron magnet has a very high energy product and coercivity, can pick up 660 times of own weight of heavy objects.
Nd-Fe-B permanent magnet is manufactured in a wide range of shapes, sizes and grades according customer's demand.
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.
NdFeB 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.
APPLICATION:
instrumentation,
electro-acoustic motor,
magnetic magnetization device
micro motors,
electronic industry,
automobile industry,
petrochemicals,

Arc Neodymium Iron Boron magnet




Arc Neodymium Iron Boron magnet demagnetization curve of 35EH in difference temperature:
bigPhoto
 Ms. Annie

Tel: 86-574-87840198
Fax: 86-574-87393806
Mobile: 86- 189 5744 9606
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Company Info

Rainbow Magnet Ltd. [China (Mainland)]


Business Type:Manufacturer
City: Ningbo
Province/State: Zhejiang
Country/Region: China (Mainland)

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