A high-performance electromagnet

An electromagnet, high-performance technology, used in the manufacture of inductors/transformers/magnets, circuits, magnetic objects, etc., can solve the problems of low saturation magnetic induction intensity of alloys, limited three-dimensional size of materials, and difficulty in meeting requirements, and achieve magnetic permeability. Increase in rate, improve insulation coating effect, and prevent powder from being oxidized

Active Publication Date: 2019-11-01
宁波耀峰节水科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing publication number is CN1450570A, which discloses a preparation method of nanocrystalline soft magnetic ribbon, which mainly obtains an amorphous precursor through single-roll quenching technology, and then applies isothermal heat treatment to prepare nanocrystalline soft magnetic ribbon. Although the process of amorphous transformation is simple and the magnetic permeability is high, the three-dimensional size of the material is limited by rapid cooling, and it is difficult to meet the demand for bulk or irregular-shaped materials in practical applications.
The publication number is CN1392573A, which discloses a nanocrystalline soft magnetic material and its preparation method. The chemical composition of its alloy includes Fe, Ni, P, B, Cu and Nb. hours, and then heated to any temperature between the crystallization temperature and 30°C higher than the crystallization temperature in an inert gas atmosphere and kept for 0.5-1 hour, the saturation magnetic induction of the obtained alloy is not high, the iron loss is high, and the process is also quite complicated

Method used

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  • A high-performance electromagnet

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A high-performance electromagnet, the electromagnet is made up of a coil and a magnetic iron core, and the magnetic iron core is made by the following method:

[0031] According to raw material composition Fe 78 Nb 1.5 Cu 1 Al 3 B 12 Ge 4.5 Weigh the ingredients, mix them uniformly and put them into a ball mill with a rotating speed of 270r / min for 35h to obtain nanocrystalline alloy powder, wherein the ball-to-material ratio is 12:1;

[0032] Add 6.5% tetraethyl orthosilicate, 2% silica sol, 17.5% alcohol, 6.5% deionized water, 0.01% nitric acid, 1.8% hard Fatty acid amide, stirred under 25Hz ultrasonic conditions for 15min, dried, ground, sieved, and then pressed into a green body under a pressure of 4GPa;

[0033] Under the mixed atmosphere of hydrogen and argon, the green body is heated up to 600°C at a heating rate of 25°C / min for annealing heat treatment, and then cooled in the furnace after holding for 2 hours;

[0034] Dip the annealed green body into the...

Embodiment 2

[0036] A high-performance electromagnet, the electromagnet is made up of a coil and a magnetic iron core, and the magnetic iron core is made by the following method:

[0037] According to raw material composition Fe 78 Nb 1.5 Cu 1 Al 2 B 12 Ge 5.5 Weigh the ingredients, mix them uniformly and put them into a ball mill with a rotating speed of 260r / min for 32h to obtain nanocrystalline alloy powder, wherein the ball-to-material ratio is 11:1;

[0038] Add 6% tetraethyl orthosilicate, 1.5% silica sol, 16% alcohol, 6% deionized water, 0.008% nitric acid, 1% hard Fatty acid amide, stirred under 23Hz ultrasonic conditions for 13min, dried, ground, sieved, and then pressed into a green body under a pressure of 3.2GPa;

[0039] Under the mixed atmosphere of hydrogen and argon, the green body is heated up to 550°C at a heating rate of 23°C / min for annealing heat treatment, kept for 1.5h and then cooled with the furnace;

[0040] Dip the annealed green body into the cured emulsi...

Embodiment 3

[0042] A high-performance electromagnet, the electromagnet is made up of a coil and a magnetic iron core, and the magnetic iron core is made by the following method:

[0043] According to raw material composition Fe 78 Nb 1.5 Cu 1 Al 4 B 12 Ge 3.5 (Mass percentage) Take the ingredients, mix them uniformly and put them into a ball mill with a rotating speed of 280r / min for 36h to get nanocrystalline alloy powder, wherein the ball-to-material ratio is 13:1;

[0044] Add orthosilicate ethyl ester, 2.2% silica sol, 17% alcohol, 6% deionized water, 0.014% nitric acid, 1.5% hard Fatty acid amide was stirred under 26Hz ultrasonic conditions for 16min, dried, ground, sieved, and then pressed into a green body under a pressure of 3.6GPa;

[0045] Heat the green body to 620°C at a heating rate of 26°C / min under an argon atmosphere for annealing heat treatment, keep it for 2 hours and then cool it in the furnace;

[0046] Dip the annealed green body into the cured emulsion at 130°...

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Abstract

The invention relates to a high-performance electromagnet, and belongs to the technical field of a magnetic alloy material. The electromagnet comprises a coil and a magnetic core, the raw material ofthe magnetic core comprises the constituent of Fe78Nb1.5Cu1AlxB12Ge7.5-x, and based on percent by mass, x is more than or equal to 1 but less than or equal to 5. Nanocrystal magnetic alloy powder is obtained by ball-milling raw material of the magnetic core, and the magnetic core which is relatively high in saturation magnetic induction and magnetic conductivity and relatively small in coercivity,iron loss value, magnetocrystalline anisotropy and magnetrostriction is finally obtained by simple processes such as insulation coating, high-temperature pressing and curing, and the electromagnet fabricated by employing the magnetic core has favorable comprehensive performance.

Description

technical field [0001] The invention relates to a high-performance electromagnet, which belongs to the technical field of magnetic alloy materials. Background technique [0002] An electromagnet is a device that generates electricity when it is energized. It is widely used in production and life, such as electromagnetic cranes, electromagnetic relays, electric bells, electromagnetic concentrators, magnetic levitation trains, speakers, household appliances, etc. The basic working principle of the electromagnet is: when the current passes through the solenoid, a uniform magnetic field will be generated in the solenoid. If a ferromagnetic substance is placed in the center of the solenoid, the ferromagnetic substance will be magnetized. After magnetization The iron core of the solenoid is also turned into a magnet, so that the magnetic field of the solenoid is greatly enhanced because the two magnetic fields are superimposed on each other. [0003] In order to demagnetize the e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F1/057H01F41/02C22C38/12C22C38/16C22C38/06
CPCC22C38/002C22C38/06C22C38/12C22C38/16H01F1/0577H01F41/0206H01F41/0246H01F41/0253H01F41/026H01F41/0266
Inventor 张峰
Owner 宁波耀峰节水科技有限公司
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