Permanent neodymium Iron Boron Disc from China manufacturer

Price:	0.01~1.0 USD
Payment Terms:	T/T,L/C,WU
Place of Origin:	Zhejiang, China (Mainland)


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Product Detail

Model No.: RM-D23

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: Industrial Magnet

Composite: Neodymium Magnet

Shape: Disc

1) the magnet-crystalline anisotropy is better
2) the magnetization is strong
3) the Curie temperature is high
4) the coating is various

NdFeB Disc

1)magnetized through the length/diameter

2)Magnetic Material

Grade: N33-N54

35M-50M,

35H-48H,

35SH-45SH,

30UH-40UH

30EH-38EH

3)Plating: Nickel,znic,NICUNI

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 need MOQ for it.

salt spray test results for 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

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