China Industrial Ring Alnico Magnets High Temperature Resistance
General Description:
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 degree. 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.
Typical applications for Alnico magnet
1.Widely used in applications such as instruments and meters which require very stable temperature properties .
2.Electronic ignition systems ,Watt bour meters ,Volt - amp meters ,medical instruments ,industrial motors ,magnetic reed swiches,generators,hand tools ,vending machines .
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 |
About our company business scopes:
We supply hard magnets and magnetic materials from China. Our magnets include ferrite magnets, flexible magnets, NdFeB magnets, alnico magnets, SmCo magnets, rubber magnets, refrigerator fridge magnets, magnetic powder, magnetic compound tesla meters & magnetizers, and magnetic jewelry. We also supply ferrite cores, MnZn cores and NiZn cores for transformers and coils, loudspeaker magnets, motor magnets, and refrigerator gasket stripes.
Our company websites:
1. e-magnet.cn 2. magnets.com.cn 3. http://www.fecrco.cn/index.htm
4.find-magnet.com 5.x-magnet.net 6. magnet-tech.com