Preparing method of magnetic ring for reactor

A reactor and magnetic ring technology, applied in the manufacture of inductors/transformers/magnets, circuits, electrical components, etc., can solve the problems of affecting the shape of the reactor and increasing the loss of the reactor, and achieve improved performance, low magnetic permeability, smooth surface effect

Inactive Publication Date: 2010-05-19
NINGXIA YINLI ELECTRICAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If left unrestricted, this additional loss will more than double the loss of the reactor
In order to reduce this unnecessary additional loss, it is often necessary to increase the number of air gaps and reduce the size of a single air gap in the manufacturing process, which will affect the shape of the reactor

Method used

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  • Preparing method of magnetic ring for reactor
  • Preparing method of magnetic ring for reactor
  • Preparing method of magnetic ring for reactor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] a. Mix ferrite powder with a particle size of 20 μm and epoxy resin glue (specifically selected from Tianjin Jitai Yifeng Company, model TJH-5217A) to form a mixture in a weight ratio of 4:1;

[0019] b. Put the mixture into the blender and stir for 32 minutes to stir evenly;

[0020] c. Put the well-stirred mixture into a forming mold, and press it on a press;

[0021] d. Put the formed magnetic ring (1) together with the forming mold into an oven, and dry it continuously at 125°C for 3.5 hours, and then control the temperature to drop evenly to room temperature within 1.2 hours;

[0022] e. Take out the magnetic ring (1) and demould it.

Embodiment 2

[0024] a. Mix sendust with a particle size of 30 μm and epoxy resin glue (specifically selected from Tianjin Jitai Yifeng Company, model TJH-5217A) in a weight ratio of 4:1 to form a mixture;

[0025] b. Put the mixture into the blender and stir for 30 minutes to stir evenly;

[0026] c. Put the well-stirred mixture into a forming mold, and press it on a press;

[0027] d. Put the formed magnetic ring (1) together with the forming mold into an oven, and dry it continuously at a temperature of 120°C for 3 hours, and then control the temperature to drop evenly to room temperature within 1.5 hours;

[0028] e. Take out the magnetic ring (1) and demould it.

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Abstract

The invention relates to a reactor, in particular to a preparing method of a magnetic ring for a reactor. The method is characterized by comprising the following steps of: a, mixing soft magnetic powder and epoxy resin glue into a mixture at the weight ratio of 1: 4; b, uniformly stirring the mixture; c, putting the stirred mixture into a forming mold to be formed by pressing on a press machine; d, putting a formed magnetic ring (1) and the forming mold into a drying oven to be continuously dried for 3-4 hours at 120 to 130 DEG C, and then controlling the temperature to be uniformly reduced to normal temperature within 1 to 1.5 hours; and e, taking out the magnetic ring (1), and then demolding. After the magnetic ring is treated with the method, the surface of the magnetic ring is smooth and bubble-free, the possibility of the crack of the magnetic ring can be reduced; and when the magnetic ring is applied to a reactor, the anti-saturation property of the iron core of the reactor can be improved, and the shielding property can be enhanced, therefore, the reactor meets the requirement of technical index, and the use property of the reactor is improved.

Description

technical field [0001] The invention relates to a reactor, especially a method for preparing a magnetic ring for the reactor. Background technique [0002] With the development of the economy, the application of reactors in various fields has become increasingly widespread. Reactors have the functions of filtering, rectifying, and protecting circuits, which can maintain the normal and stable operation of circuits. In particular, some reactors with special purposes have higher technical requirements for magnetic permeability, shielding, and anti-core saturation. In order to avoid iron core saturation, it is necessary to open an air gap on the iron core, and there will be a phenomenon of magnetic field diffusion near the air gap, and the diffused magnetic field will cause additional loss, especially when the size of a single air gap is large, it will Very serious additional losses occur on the core and windings. If left unrestricted, this additional loss will more than doubl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F41/02
Inventor 焦海波
Owner NINGXIA YINLI ELECTRICAL CO LTD
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