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Demagnetizer and demagnetization method thereof

A demagnetization and magnetic field technology, applied in the direction of magnetic objects, electrical components, circuits, etc., can solve problems such as unsatisfactory demagnetization effect

Inactive Publication Date: 2012-01-11
SHANGHAI RUISUI MAGNETIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide a demagnetization device and a demagnetization method thereof, which mainly solves the problem that the existing demagnetization using the natural attenuation pulse method, due to the rapid attenuation of the generated alternating magnetic field, still leaves ≥ 30Gs on the surface of the magnetic material after the action. The magnetic induction intensity and the unsatisfactory demagnetization effect, the device of the present invention can achieve the ideal demagnetization effect by using a high electric energy wave, and its power saving can reach more than 95%.

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  • Demagnetizer and demagnetization method thereof

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Embodiment Construction

[0016] see figure 1 , which is a schematic structural view of a preferred embodiment of the demagnetization device of the present invention. As shown in the figure: it consists of a magnetizing power supply 2, a coil group 4, a high-speed motor 7, a frequency conversion controller 6, a bearing pair 1, a transmission shaft 3, and a material box 5; the coil group 4 is two corresponding The coils are connected together in series or in parallel, and then connected to the output end of the magnetizing power supply 2; a material box 5 is placed in the center of the coil group 4, and the two ends of the material box 5 are respectively connected to the transmission shaft 3, and the two ends of the transmission shaft 3 Each end is supported by a bearing pair 1, and one end of a transmission shaft 3 is connected to a high-speed motor 7, and the frequency conversion controller 6 performs frequency modulation operation control on the high-speed motor 7.

[0017] The demagnetization metho...

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Abstract

The invention relates to a demagnetizer and a demagnetization method thereof. The demagnetizer comprises a coil or a coil assembly which can work together with a magnetizing power supply to generate a demagnetizing field attenuating gradually, and a material box which can rotate at an adjustable speed is arranged in the coil or coil assembly in a penetrating way. In the prior art, a natural attenuation pulse mode is used for demagnetization; since a generated alternating magnetic field rapidly attenuates and the residual magnetic induction intensity on the surface of the magnetic material subjected to the action of the alternating magnetic field is not less than 30Gs, the technical defect of unsatisfied demagnetization effect can be caused. By the adoption of the demagnetization method provided by the invention, the technical defect can be overcome. The demagnetizer provided by the invention can achieve ideal demagnetization effect by utilizing high electric energy wave once, and more than 95% of electric energy can be saved.

Description

technical field [0001] The invention relates to a processing device for magnetic materials, in particular to a demagnetization device and a demagnetization method thereof. Background technique [0002] For the demagnetization of rare earth magnets (Hcj≥12000Oe), the natural attenuation pulse method is generally used for demagnetization. Due to the rapid attenuation of the generated alternating magnetic field, the residual magnetic induction intensity of ≥30Gs remains on the surface of the magnetic material after the action, and the demagnetization effect is not ideal. . Contents of the invention [0003] The purpose of the present invention is to provide a demagnetization device and a demagnetization method thereof, which mainly solves the problem that the existing demagnetization using the natural attenuation pulse method, due to the rapid attenuation of the generated alternating magnetic field, still leaves ≥ 30Gs on the surface of the magnetic material after the action....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F13/00
Inventor 吕振
Owner SHANGHAI RUISUI MAGNETIC
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