Multi-pole magnet-ring magnetizing method using magnetic line bomharding process

A multi-pole magnetic ring and magnetic field line technology, applied in the direction of magnetic objects, electrical components, circuits, etc., can solve the problems of complex structure of magnetizing equipment, limiting the peak value of charging current, affecting the effect of magnetization, etc., to achieve simple and reliable magnetization device, Large current peak value and good magnetizing effect

Inactive Publication Date: 2009-05-06
申佑芝
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The magnetizing equipment used in this method is complex in structure and expensive, and each set of equipment costs more than ten thousand yuan.
Its magnetizing circuit is controlled by thyristor, and thyristor has the defects of large internal resistance and poor overload capacity, which limits the peak value of charging current and affects the magnetization effect.
In addition, this method also has the disadvantage of being difficult to miniaturize

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] The equipment used in the present invention has an automatic voltage regulator, a rectifier, an energy storage capacitor, and the operating method is as follows:

[0013] a. Automatically close the power switch, increase the voltage, and charge the energy storage capacitor to 300V after rectification.

[0014] b. Automatically turn off the power switch, and then automatically close the switch of the magnetizing circuit, so that the energy storage capacitor can magnetize the permanent ferrite magnetic ring in the form of instant bombardment, and the magnetized magnetic ring can be put into M (M is Even number) poles, each pole is made of a single-turn conductor plus a magnetic conductor in the magnetizing mold, and the magnetizing mold is connected in the magnetizing circuit composed of an energy storage capacitor and a magnetizing circuit switch;

[0015] c. Automatically disconnect the magnetizing circuit switch to complete the first magnetization, then repeatedly turn...

Embodiment 2

[0017] It is basically the same as the first embodiment, except that the energy storage capacitor is charged to 850V after rectification, and the magnetized magnetic ring material is NdFeB permanent magnet material.

Embodiment 3

[0019] It is basically the same as the first embodiment, except that the energy storage capacitor is charged to 900V after rectification, and the magnetized magnetic ring material is samarium cobalt permanent magnet material.

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Abstract

The method includes following operations: turning power switch on automatically, or manually to raise voltage, charging energy storage capacitor to 300-900V after rectification; turning power switch off, and turning on switch for magnetizing circuit so that through magnetizing mould tool, the energy storage capacitor magnetizes toroidal magnetic core made from material of permanent magnet in mode of instant bombardment; finally, turning off switch for magnetizing circuit automatically, or manually so as to complete first time magnetizing; repeating the steps above to carry out multiple magnetizing. Features are: simple and reliable magnetizing device, small internal resistance and large peak current, more than 95% use ratio of surface area of toroidal magnetic core, in favor of smoothrunning of synchro motor. The invention is suitable to toroidal magnetic core in large and small types.

Description

technical field [0001] The invention relates to a magnetizing method, in particular to a magnetizing method for a permanent magnet magnetic ring, belonging to the field of electromagnetic materials. Background technique [0002] There are currently two production methods for multi-pole magnetic rings. One is the piecing method, that is, a plurality of permanent magnets are evenly and directly bonded into an annular multi-pole magnetic ring according to N-S-N.... This method is complicated in process, high in cost and difficult in miniaturization. Another method is the solenoid method, that is, the method of magnetizing is used to make a multi-pole magnetic ring. The used magnetizing equipment of this method is complex in structure, expensive, and each set of equipment needs more than ten thousand yuan. Its magnetizing circuit is controlled by a silicon controlled rectifier, and the silicon controlled rectifier has the defects of large internal resistance and poor overload ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F13/00
Inventor 申佑芝申华伟李波
Owner 申佑芝
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