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Low-cost high-flux magnetic core material and preparation method thereof

A magnetic core material, high-flux technology, used in magnetic materials, inductance/transformer/magnet manufacturing, magnetic objects, etc., can solve the problems of poor DC superposition characteristics, reduced magnetic flux density, and increased loss

Pending Publication Date: 2020-08-11
山西中磁尚善科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the content of nickel is reduced in order to reduce the cost, the magnetic permeability will be reduced, and the coercive force will be increased, resulting in increased loss, reduced magnetic flux density, and deteriorated DC superposition characteristics, thus losing the low loss of the iron-nickel alloy material. High-throughput features

Method used

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  • Low-cost high-flux magnetic core material and preparation method thereof

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preparation example Construction

[0023] A method for preparing a low-cost high-flux magnetic core, comprising the following steps:

[0024] S1. Preparation of iron-nickel X powder: put iron ingots, nickel ingots, and X ingots into the melting furnace, use high-pressure gas to impact the alloy melt for atomization, and then rapidly cool to obtain iron-nickel X alloy powder; among them, iron-nickel X alloy powder , The particles are spherical and the particle size is below 150 mesh. The prepared magnetic core has lower loss.

[0025] S2. Pretreatment of the alloy powder: put the iron-nickel X alloy powder into a ball mill, and then add alcohol for ball milling; the ball milling time is 30min-180min, and the rotating speed is 300-800r / min. Ball milling pretreatment removes the attached small particles of powder, and also changes the appearance of the ball-shaped powder to facilitate molding, and after the treatment, the prepared magnetic core has better DC superposition performance.

[0026] S3, insulation tre...

Embodiment 1

[0031] Take 695 parts by mass of iron ingots, 300 parts nickel ingots, and 5 parts silicon ingots and put them into a smelting furnace, use high-pressure gas to impact the alloy melt for atomization, and then rapidly cool to obtain iron-nickel-silicon alloy powder. The iron-nickel-silicon alloy powder was put into a ball mill, and then alcohol was added for ball milling. The ball milling time was 180 min, and the rotational speed was 500 r / min. Mix iron-nickel-silicon alloy powder with kaolin, then add water and water glass to mix and then heat and fry dry; wherein the consumption of kaolin is 1.2% of the weight of the alloy powder, the consumption of water glass is 0.8% of the weight of the alloy powder, and the consumption of water is 15% by weight of the alloy powder, the heating temperature is 90°C. Add microcrystalline wax to the insulating powder and carry out compression molding, wherein the molding pressure is 20 tons / cm2. Put the pressed magnetic core into a mixed at...

Embodiment 2

[0033] Take 570 parts by mass of iron ingots, 400 parts nickel ingots, and 30 parts silicon ingots and put them into a smelting furnace, use high-pressure gas to impact the molten alloy for atomization, and then rapidly cool to obtain iron-nickel-silicon alloy powder. The iron-nickel-silicon alloy powder was put into a ball mill, and then alcohol was added for ball milling. The ball milling time was 150 min, and the rotational speed was 800 r / min. Mix the iron-nickel-silicon alloy powder with kaolin, then add water and water glass to mix and then heat and fry to dry; wherein the consumption of kaolin is 1% of the weight of the alloy powder, the consumption of water glass is 0.8% of the weight of the alloy powder, and the consumption of water is 12% by weight of the alloy powder, the heating temperature is 90°C. Add microcrystalline wax to the insulating powder and carry out compression molding, wherein the molding pressure is 20 tons / cm2. Put the pressed magnetic core into a ...

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Abstract

The invention belongs to the technical field of soft magnetic materials, and particularly relates to a low-cost high-flux magnetic core material and a preparation method. The invention relates to a low-cost high-flux magnetic core material, which is characterized by comprising the following components: iron, nickel and X, wherein X is silicon or aluminum; when X is silicon, the mass percentage ofeach component is as follows: 30%-45% of nickel, 0.5%-8.0% of silicon and the balance of iron; and when X is aluminum, the mass percentage of each component is as follows: 30%-45% of nickel, 0.3%-5.5%of aluminum and the balance of iron. According to the invention, the defects of the prior art are overcome, and the same performance as nickel with the content of 50% can be achieved even if the content of nickel is reduced. The magnetic core manufactured through the method has the same loss and direct current superposition performance as an existing iron-nickel magnetic core.

Description

technical field [0001] The invention belongs to the technical field of soft magnetic materials, and in particular relates to a low-cost and high-throughput magnetic core material and a preparation method. Background technique [0002] Metal soft magnetic powder cores have high saturation magnetic flux density, high effective magnetic permeability, and good magnetic stability, and are widely used in communications, computers, home appliances, transformers, inverters, and new energy vehicles. Among them, the high-flux soft magnetic powder core has the highest DC bias performance, high saturation magnetic induction and low loss, so it has a large market application. However, since iron-nickel is a traditional high-flux soft magnetic powder core, the price of its raw material nickel is too high, which limits the application and development of high-flux magnetic cores to a certain extent. [0003] The iron-nickel alloy material has the best magnetic properties due to its composi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F1/147H01F41/02
CPCH01F1/1475H01F41/02H01F41/0246
Inventor 韩庆镐涂勇威
Owner 山西中磁尚善科技有限公司
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