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Alnico 8 poles Rotor Cast Alnico Magnet For Motors

alnico magnet

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Alnico magnets are made primarily from aluminum, nickel, cobalt, copper, iron and sometimes titanium. Among all the available magnetic materials, they have high magnetic flux density, resistance to corrosion and excellent temperature stability, the maximum working temperature up to 600℃. Alnico magnet is widely used in all kinds of sensors and meters, electronics, instruments, medical instruments, teaching, automobile, aviation, martial and other applications.
There are two different manufacturing process for Alnico: Cast and Sintered Alnico. Cast Alnico can be made into intricate and complex shapes, which is not possible with other magnetic materials. Sintered Alnico is manufactured using a powder metallurgy process. while slightly weaker than cast alnico, It exhibits superior mechanical characteristics .
 
 
Cast Alnico Process Chart
Raw material -> forming- >smelting-> heat treatment-> surface treatment->precision grinding->inspection ->packing
Sintered Alnico Process Chart
Raw material ->powder-> forming-> sintered- >heat treatment-> surface treatment->precision grinding –>inspection- >packing

 

1. Comparatively high magnetic properties

2. Magnetic rotors with 2 poles to 12 poles 

3. Tight tolerance of thickness as +/-0.01mm

 

 

Applications:

 

Magnetic Motors and generators

Holding magnets

 

 

Specifications:

 

Part No.

Outer Dia.(MM)

Inner Dia(MM)

Thickness(MM)

Poles

Lifting

R001

25.4

6.4

19.01

4

7.3

R002

31.75

6.35

19.05

6

10.8

R003

38.1

10.00

22.10

6

17.7

R004

46.02

8.00

31.75

6

23.1

R005

50.8

12.7

31.75

8

31.5

R006

76.2

20.00

50.8

8

50

 

Physical Properties of Cast Alnico

Curie Temperature (℃)

760-890

Max. Operating Temperature (℃)

450-550

Resistivity (μohm.cm)

47-54

Hardness (Hv)

520-630

Density (g/cm³)

6.90-7.30

Relative Recoil Permeability (μrec)

1.70-4.70

Saturation Field Strength (kOe,kA/m)

2.7-6.3/215-500

Temperature Coefficient of Br (%/℃)

-0.025 ~ -0.02

Temperature Coefficient of iHc (%/℃)

+0.01 ~ +0.03

 

Competitive Advantage:

 

1. High Temperature resistance

2. Comparatively high magnetic properties

3. Dimensional Stability

CONTACT US

  Hang Zhou XiaoShan Dunben Magnet  Co., Ltd 
 1702, Unit 2, Building 1, Dacheng Mingzuo, Shiixn Road, Xiaoshan, Hangzhou, Zhejiang, China
  86-571-82750965 
  86-571-82751287
 wang@dbmagnet.com
 

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