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Instrument composite magnet with magnetic temperature compensation

A magnetic temperature compensation and composite magnet technology, applied in the direction of magnets, magnetic objects, magnetic materials, etc., can solve the problems of no magnetic temperature compensation description, no magnetic temperature compensation effect, etc., to achieve improved magnetic utilization and high magnetic stability performance, reducing the effect of reluctance loss

Active Publication Date: 2011-08-03
宁波盛事达磁业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The "Composite Magnet" of Chinese Patent No. CN101552078 uses two different permanent magnet materials to combine together to form a composite magnet, which does not have the function of magnetic temperature compensation
Patent No. CN101542645 "Manufacturing method of nanocomposite magnet" uses NdFeB material, and there is no description of magnetic temperature compensation

Method used

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  • Instrument composite magnet with magnetic temperature compensation
  • Instrument composite magnet with magnetic temperature compensation
  • Instrument composite magnet with magnetic temperature compensation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The first step is to separately prepare the magnet powder and the magnetic temperature compensation part (iron-nickel alloy) powder separately, and the required particle size of the raw material is -150 mesh. The percentage by weight of the magnet powder is 24% of cobalt powder, 14% of nickel powder, 3% of copper powder, 17% of iron-aluminum alloy powder (1:1), 1% of niobium-iron alloy powder (1:1), and 41% of iron powder %; The percentage of powder for magnetic temperature compensation is 70% for iron powder and 30% for nickel powder. Mixing adopts a three-dimensional motion high-efficiency motion mixer, model GH-100, manufactured by Wenling Donghai Powder Equipment Manufacturing Factory. The mixing time is 100 minutes, and the mixing is required to be uniform.

[0031] Second, the compression molding of the composite magnet, the equipment adopts a dry powder press, model Y41-400, the manufacturer Tianjin No. g magnet powder, and then add 2.8g of magnetic temperature ...

Embodiment 2

[0037] The magnet material is AlNiCo33 / 11, and the magnetic temperature compensation material is 1J30.

[0038] The manufacturing method is as follows:

[0039] The first step is to separately prepare the magnet powder and the magnetic temperature compensation part (iron-nickel alloy) powder separately, and the required particle size of the raw material is -150 mesh. The weight percentage of magnet powder is 35% of cobalt powder, 14% of nickel powder, 3.5% of copper powder, 15% of ferro-titanium (3:7), 15% of iron-aluminum alloy powder (1:1), ferroniobium powder (1:1) 2%, iron powder 15.5%; the percentage of magnetic temperature compensation powder is 70% iron powder and 30% nickel powder. Mixing adopts a three-dimensional motion high-efficiency motion mixer, model GH-100, manufactured by Wenling Donghai Powder Equipment Manufacturing Factory. The mixing time is 100 minutes, and the mixing is required to be uniform.

[0040] Second, the compression molding of the composite m...

Embodiment 3-12

[0046] Prepare product of the present invention as method and step described in embodiment 1, raw material is calculated according to the following table:

[0047]

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Abstract

The invention relates to the field of magnetic materials, in particular to an instrument composite magnet with magnetic temperature compensation. The instrument composite magnet with the magnetic temperature compensation solves the problems that a magnet and a magnet temperature compensation material in the prior art are processed respectively and then are assembled, are time-wasting and labor-wasting and have high costs, the two processes adopt a binding agent, a permanent magnet system cannot keep stable along with temperature changes, and the application range is limited to a certain extent in particular in certain high temperature fields. The invention also solves the problem that the stability cannot be kept along with the temperature changes and the like, and provides the instrumentcomposite magnet with the magnetic temperature compensation, particularly a composite magnet of which the magnetism supply part is made of a sintered alnico material. The instrument composite magnet with the magnetic temperature compensation is prepared by the following steps of: preparing magnet powder and magnetic temperature compensation powder respectively; pressing and forming the powder; sintering the powder; performing heating treatment on the powder; and performing grinding fine machining on the powder.

Description

technical field [0001] The invention relates to the field of magnetic materials, and relates to a composite magnet for instruments with magnetic temperature compensation. Background technique [0002] Magnet is an important functional part. Composite magnets are made of a variety of materials. They are mainly used in electronic telecommunications, instruments and meters, medical and health care, office supplies, household appliances, and stationery. Due to the different composite materials used, their applications are also different. different. One of the current production processes of composite magnets is that the two parts of the composite magnet are processed separately and then bonded together with an adhesive. In fact, this cannot be called a composite in the true sense, it is a combination; the other The first is processed by mixing magnetic powder with rubber or resin. The complex produced by the first process is time-consuming and labor-intensive due to the separa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F7/00H01F1/047H01F41/02B22F3/16
Inventor 王占国张利平凌铨
Owner 宁波盛事达磁业有限公司
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