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Permanent Magnets And Rare Earth Magnets RE Magnets/Ferrite Magnets
 
 
Permanent Magnets And Rare Earth Magnets
FERRITE MAGNETS
FERRITE MAGNETS We manufacture and supply ferrite magnets are composed of strontium carbonate and iron oxide. These are generally available in various forms like that of discs, rings, blocks and cylinders.

Ferrite Magnets- A powdered mixture if strontium carbonate and iron is injected into either a wet press dry press of forming. During this pressing process, a magnetic field is applied in the direction of preferred magnetization to orient the material and increase the magnet’s performance potential. This magnet is considered “ oriented”. If bit exposed to a magnetic field at time of formation, it is called “non-oriented” (Isotropic). After the molding process, the material is sintered at about 1010°C. This process is similar to that of kilting ferrite pottery, thus the popular name “ferrite” magnet. Lastly, the magnet is finish – ground to size with a diamond – bladed grinding wheel, magnetized, and inspected for shipment.

Attributes Of Ferrite Magnets
High intrinsic coercive force.
Tooling is expensive.
Least expensive material compared to alnico and rare earth magnets.
Limited to simple shapes due to manufacturing process.
Lower service temperature than alnico, greater than rare earth
Finishing requires diamond cutting or grinding wheel
 
RARE EARTH MAGNETS
Neodymium Iron Boron (NdFeB)
Neodymium magnets (Nd-Fe-B) are composed of neodymium, iron, and a few transition metals. Samarium Cobalt magnets (SmCo) are composed of samarium, cobalt and iron. We develop these rare earth magnets that are extremely strong for their small size, metallic in appearance and available in simple shapes as rings, blocks and discs.

Manufacturing Rare Earth Magnets
Usually the elements are melted together and milled into a power that is dry-pressed to shape in the presence of a magnetic filed. The materials are then sintered, aged, ground to dimension, magnetism and tested and tested. They are called “rare earth” magnets because the elements of neodymium and samarium are classified as such in the lanthanides section of the periodic table of the elements.

Attributes of Neodymium

Very high resistances to demagnetization.
High energy for size.
Good in ambient temperature
High priced
Material is corrosive and should be coated for long term maximum energy output
Low working temperature for heat applications
 
 
 
Overband Magnetic Separators | Suspension Magnets | Concentrator Magnetic Separators | Plate Magnets | Hump Magnets | Magnetic Drum Separators | Magnetic Pulleys | Magnetic Grids | Magnetic Ferrous Traps | Magnetic Coolant Filters | Permanent Lifting Magnets | Circular Lift Magnets | Rectangular Lift Magnets | Unbalanced Vibrating Motors | Magnetic Rolls | Magnetic Floor Sweepers | General Purpose Magnets | Magnetic Tubes | RE Magnets/Ferrite Magnets
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