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Detection system for anti-demagnetization ability of permanent magnet and detection method thereof

A detection system and detection method technology, applied in the direction of magnetic performance measurement, etc., to avoid waste, accurate anti-demagnetization ability, and improve work efficiency.

Pending Publication Date: 2018-07-10
TIANJIN SANHUAN LUCKY NEW MATERIAL CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

There is no more experimental data as a basis for the magnetic circuit design and actual use of NdFeB permanent magnets. Therefore, it is necessary to study the attenuation and change laws of magnets in actual use.

Method used

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  • Detection system for anti-demagnetization ability of permanent magnet and detection method thereof
  • Detection system for anti-demagnetization ability of permanent magnet and detection method thereof
  • Detection system for anti-demagnetization ability of permanent magnet and detection method thereof

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Embodiment Construction

[0021] In order to enable the examiner to further understand the structure, features and other purposes of the present invention, the attached preferred embodiments are attached with accompanying drawings in detail as follows. The embodiments illustrated in the accompanying drawings are only used to illustrate the technical solution of the present invention , not to limit the present invention.

[0022] Such as figure 1 and figure 2 as shown, figure 1 It is a schematic structural diagram of the detection system of the present invention, figure 2 It is a structural schematic diagram of the alternating magnetic field of the detection system of the present invention; the detection system includes a temperature controller 1 with a temperature sensor, an experimental sample positioning device 2, a variable frequency motor 4 with a frequency converter, two alternating magnetic field control Device 5, 5', alternating magnetic field source 6, fluxmeter 7 and detection coil 8; two...

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Abstract

The invention provides a detection system for the anti-demagnetization ability of a permanent magnet and a detection method thereof. The detection system comprises an experimental sample positioning device, an experimental sample, a frequency conversion motor with a frequency converter, alternating magnetic field control devices, alternating magnetic field sources, a fluxmeter and a detection coil, wherein the experimental sample is positioned in the alternating magnetic field through the experimental sample positioning device; an alternating magnetic field is generated by the opposite alternating magnetic field sources on the alternating magnetic field control devices; the frequency conversion motor with the frequency converter drives the alternating magnetic field control devices to cutmagnetic lines of force according to a designed rotating speed; and the fluxmeter and the detection coil detect flux distance changes of the experimental sample. A precise measuring instrument is adopted to accurately measure the decay and change law of permanent magnet magnetism in an actual use state of a product, and improvement of the product quality during a production process of an NdFeB permanent magnet is facilitated.

Description

technical field [0001] The invention relates to a detection method of a permanent magnet, in particular to a detection system and a detection method of the anti-demagnetization ability of the permanent magnet. Background technique [0002] Under the background of advocating green energy for energy saving and environmental protection, NdFeB is widely used in various fields as green energy. NdFeB permanent magnets are affected by the external magnetic field and temperature, and the physical characteristics of the magnets will decay. There is no more experimental data as a basis for the magnetic circuit design and actual use of NdFeB permanent magnets. Therefore, it is necessary to study the attenuation and change laws of magnets in actual use. [0003] Develop an experimental device that simulates the use state of materials, which can truly measure the attenuation and change laws of magnets in the actual use process, which is beneficial to the development and production of Nd...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R33/12
CPCG01R33/12
Inventor 刘武利何叶青孙德成
Owner TIANJIN SANHUAN LUCKY NEW MATERIAL CO LTD
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