Segment Laminated Neodymium Magnets

Laminated Magnet

Segment Laminated Neodymium Magnets
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Segment Laminated Neodymium Magnets
Segment Laminated Neodymium Magnets
Segment Laminated Neodymium Magnets
Segment Laminated Neodymium Magnets
Description

Arc Laminated Magnets

    Laminated magnet is to cut the whole magnet into many small magnets, and then use specific glue to bond together. These small magnets are insulated from each other and can down lectromagnetic eddy current.
 
    When the permanent magnet motor is running, the motor will generate harmonic and the magnet will generate skin effect, these all will bring a lot of eddy current loss. And then, the temperature of permanent magnet rises, which results in irreversible demagnetization and affects the safety and stability of motor operation. So the design of laminated magnet can just cut down this risk.

      

The eddy current simulation experiment of different piecemeal permanent magnets

Grade: N35UH Magnet
Dimension: 20x160x5mm
Experiment: Magnet are tested at different excitation frequencies in a non-piecewise and piecewise manner.

Testing Results:

1. The eddy current loss of magnet decreases with the increase of magnet segments.
2. The eddy current loss of magnet increase with the excitation frequency.
 

Technical requirements:

1.The thickness of insulating layers is within 0.04mm.
2. In normal temperature, the bond strength of insulating layers can reach more than 50Mpa.
3. The maximum working temperature can reach 200 ℃.
4. The whole geometric tolerance is within 0.05mm.
5. These small magnets are insulated from each other.
 

Feature:

1.Reducing electromagnetic eddy currrent.
2.Remaining the same magnetic properties with the whole magnet or even superior.

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