Magnetizing method and permanent magnet magnetized thereby

Details Magnetizing method and permanent magnet magnetized thereby Magnetizing method and permanent magnet magnetized thereby

2006-05-16

2006-05-16

Lam, Thanh (Department: 2834)

Electrical generator or motor structure

Dynamoelectric

Rotary

C310S156450, C310S216006

Reexamination Certificate

active

07045923

ABSTRACT:
A conductive attenuation body is arranged close to at least a part of surface of a material to be magnetized which has far lower conductivity than that of the attenuation body. Furthermore, the change in magnetic flux during magnetization is rapidly intensified for a sufficiently short period of time and rapidly weakened. The magnetization flux is impressed in form of penetrating the attenuation body. With the rapid change in the magnetization flux over time, in the conductive attenuation body, an eddy current is generated in a direction canceling the magnetization flux and thus the magnetization field weakens. The magnetization waveform can be adjusted by adjusting a thickness, an arrangement shape or expanse of the attenuation body.

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