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High performance Alnico magnets Permanent

0.2~5.0 USD
Min. Order: 1000 Piece/Pieces
Trade Term: FOB
Payment Terms: L/C, T/T
Supply Ability: 100 Metric Ton/Metric Tons per Month
Place of Origin: Zhejiang

Company Profile

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

Product Detail

Model No.: alnico magnets
Means of Transport: Ocean
Type: Permanent
Application: Industrial Magnet
Shape: Custom Request
Grade: AlNico 5
Size: According to drawing
Place of Origin: Zhejiang, China(Mainland)
Export Area: All of the World
Coating: No
Cutting Tolerance: Custom Request
Magnetization: Custom Request
Production Capacity: 100 Metric Ton/Metric Tons per Month
Packing: According to customer's requirement
Delivery Date: 15-20 days
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Product Description

Introduction

Alnicos are precipitation-hardened alloys requiring special heat treatment techniques. The raw materials are Cobalt, Nickel, Copper, Aluminum and Iron. Titanium, silicon, etc. are added in certain proportions. The raw materials in their purest form are melted in medium frequency induction furnaces and castings are made using conventional sand or shell moulds. The heat treatment consists of heating the alloy in furnace to well above its curie point, and holding it at that temperature for some time. This is followed by controlled cooling after which the castings are reheated and held for a long period at a temperature of about 600 degrees. This ageing process increases the coercive force and the energy product. Finally, the castings are ground to obtain close dimensional tolerances whenever necessary and inspected for physical and magnetic accuracy.



Joy Magnet range of manufacturing includes all the below grades of AlNiCo.
We also have the expertise in manufacturing of isotropic magnets. These types of magnets have the unique property of exhibiting Multiple Poles.
Cast Alnico Materials - Physical and Mechanical Properties (Nominal values)
Materials
Density
g/cm3
Hardness Rockwell
C
Curie Point
oC
Coefficient of
thermal expansion
per oC x 10
Electrical Resistivity
at 25 oC
M.CM
Specific Heat
Cal/gmoC
Alni
6.9
51
760
12
65
0.11
Coalni
7.0
52
700
12
62
0.11
Alnico II
7.2
53
810
12
60
0.11
CoalnimaxSpl.
7.3
50
860
11.4
55
0.11
Coercimax
7.35
50
870
11.3
50
0.11
CoercimaxSpl.
7.35
50
870
11.3
50
0.11



Cast Alnico Materials - Magnetic Properties (Nominal values)
Materials
Remnance
Br
Gauss
Coercivity
Hc
Oersted
Maximum Energy
Product (BH)
max MGOe
Working Point
BdHd
G O
Average Recoil
Permeability
Minimum
Magnetising Force
HsOersted
Reversible Temp
Coefficient of Br
% /oC
ISOTROPIC
Alni
6200 - 6700
510 - 560
1.3 - 1.5
4000 350
4.3
3000
- 0.03
Coalni
6000 - 6500
580 - 630
1.3 - 1.5
4000 354
4.5
3000
- 0.03
Alnico II
6700 - 7500
600 - 670
1.5 - 1.8
4000 400
4.9
3000
- 0.03
ANISOTROPIC
CoalnimaxSpl.
12100 - 12900
615 - 665
5.0 - 5.8
10000 550
3.5
3000
- 0.02
Coercimax
11100 - 11900
690 - 730
4.3 - 5.1
8400 560
4.0
3000
- 0.02
CoercimaxSpl.
11700 - 12300
630 - 690
5.0 - 5.8
9800 550
3.7
3000
- 0.02


Excellent temperature stability, high residual induction, and relatively high energies characterize AlNiCo material. They can be manufactured in number of complex shapes such as horseshoes.





Manufacturing Process







Applications and Dimensions







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