China supplier permanent magnet ring from China manufacturer

Price:	0.1~10.0 USD
Payment Terms:	T/T,L/C,WU
Place of Origin:	Zhejiang, China (Mainland)


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Product Detail

Model No.: RM-R00

Production Capacity: 100ton/month

Delivery Date: 4 weeks

Type: Permanent

Brand Name: rainbow magnet

coating: ZN/NICUNI/EPOXY

Means of Transport: Ocean,Land,Air

Packing: standard carton by sea or b...

Application: Speaker Magnet

Composite: Neodymium Magnet

shape: ring

grade: N/M/H/SH/UH/EH/AH

high quality
various size
difference coating
grade from N35 to N52.N35M to N50M,N35H to N48H,N35SH to N45SH,N30UH to N40UH,N30EH to N38EH.

permanent magnet ring magnetic energy parameters

Type	composition	Magnetic properties
Type	composition	Br/T	Hc /(Ka/m)	(BH)m/ (kJ/m3)	Tc/℃	Density g/cm-3
Sinter NdFeB	Nd13.5(Fe,M)bananceB6.1-7.0	1.1-1.4	800-2400	240-400	310-510	7.4-7.6
Bonded NdFeB	Nd4-13(Fe,M)bananceB6-12	0.6-1.1	800-2100	56-160	310	5.3-6.0
AlNiCo 5	8%-12%Al,15%-22%Ni 5%-24%Co,3%-6%Cu. Balance Fe	0.7-1.32	40-60	9-56	890	7.3
AlNiCo8	7%-8%Al,14%-15%Ni 34%-36%Co,5%-8%Ti, 3%-4%Cu,Balance Fe	0.3-0.44	250-350	25-36	450	7.3
1:5,SmCo	62%-63%Co,38%-37%Sm	0.9-1.0	1100-1540	117-179	720	8.1
2:17,SmCo	Sm(Co0.69Fe0.2Cu0.1Zr0.01)7.2	1.0-1.3	500-600	230-240	800	8.2
Bonded smco	Sm(Co0.67Fe0.22Cu0.1Zr0.07Ti0.01)7.1	1.0-1.07	800-1400	160-204	810	7.4

The main physical properties of sintered NdFeB

magnetic properties	Parameters
Density /g.cm3 Vickers Hardness HV Resistivity /υΩ.cm Compressive strength/N.mm-2 Coefficient of Thermal Expansion (C⊥)/K-1 Coefficient of Thermal Expansion (C∥) /K-1	7.45 570 150 780 -4.8X10-6 -3.4X10-6

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

permanent magnet ring 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 attached pic permanent magnet rings for difference coating.