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High-magnetic permeability composite material powder and preparation method thereof

A technology of composite materials and high magnetic permeability, which is applied in the direction of magnetic materials, magnetic core manufacturing, inductor/transformer/magnet manufacturing, etc., can solve the problems of high magnetic permeability and poor characteristics, and achieve high tap density, high stacking, Effect of Good DC Superposition Characteristics

Inactive Publication Date: 2019-08-02
马鞍山新康达磁业股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the problem of poor high magnetic permeability characteristics of existing alloy powders, the present invention provides a high magnetic permeability composite material powder and its preparation method, and obtains a composite material with a magnetic permeability of μe125, which has lower loss than iron-silicon materials and a stacking ratio of Products with high sendust

Method used

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  • High-magnetic permeability composite material powder and preparation method thereof
  • High-magnetic permeability composite material powder and preparation method thereof

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Effect test

Embodiment 1

[0035] The preparation method of a kind of high magnetic permeability composite material powder of the present embodiment specifically comprises the following steps:

[0036](1) Ingredients: sieve the vacuum air-atomized FeSiAl with a rotary vibrating sieve, take -250 mesh powder, and sieve the gas-atomized iron-silicon material with a rotary vibrating sieve, take -400 mesh powder, Vacuum air-atomized iron-nickel is sieved with a rotary vibrating sieve, and the +400 mesh powder is taken, and mixed according to 1.8:0.8:3, and the specific vacuum air-atomized iron-silicon-alumina powder below -250 mesh: 18 kg;- Aerosolized iron-silicon powder below 400 mesh: 8 kg; Vacuum air-atomized iron-nickel powder above 400 mesh: 30 kg, using a V-type mixer for 30 minutes;

[0037] (2) Insulation coating: In a vertical mixer, put the mixed powder into a stirring pot heated to 90°C. When the powder temperature reaches 50°C, add 0.3% liquid silicone resin with a solid content of 15%. The wei...

Embodiment 2

[0061] The preparation method of a kind of high magnetic permeability composite material powder of the present embodiment specifically comprises the following steps:

[0062] (1) Ingredients: sieve the vacuum air-atomized iron-silicon-alumina with a rotary vibrating sieve, take -250 mesh powder, and sieve the gas-atomized iron-silicon material with a rotary vibrating sieve, take -400 mesh powder, Vacuum air-atomized iron-nickel is sieved with a rotary vibrating sieve, and the +400 mesh powder is taken, and mixed according to 2.2:1.2:3.4. The specific vacuum air-atomized iron-silicon-aluminum powder below -250 mesh: 22 kg;- Gas-atomized iron-silicon powder below 400 mesh: 12 kg; vacuum-atomized iron-nickel powder above 400 mesh: 34 kg, using a V-type mixer for 50 minutes;

[0063] (2) Insulation coating: Put the mixed powder into a stirring pot heated to 80°C. When the powder temperature reaches 60°C, add 1.0% liquid silicone resin with a solid content of 15%. The specific weig...

Embodiment 3

[0087] The preparation method of a kind of high magnetic permeability composite material powder of the present embodiment specifically comprises the following steps:

[0088] (1) Ingredients: sieve the vacuum air-atomized FeSiAl with a rotary vibrating sieve, take -250 mesh powder, and sieve the gas-atomized iron-silicon material with a rotary vibrating sieve, take -400 mesh powder, Vacuum air-atomized iron-nickel is sieved with a rotary vibrating sieve, and the +400 mesh powder is taken, and mixed according to 2.2:1:3. The specific vacuum air-atomized iron-silicon-alumina powder below -250 mesh: 22 kg;- Aerosolized iron-silicon powder below 400 mesh: 10 kg; vacuum air-atomized iron-nickel powder above 400 mesh: 30 kg, using a V-type mixer for 30 minutes;

[0089](2) Insulation coating: Put the mixed powder into a stirring pot heated to 100°C. When the temperature of the powder reaches 45°C, add 1.0% liquid silicone resin with a solid content of 15%. The specific weight of the...

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Abstract

The invention discloses high-magnetic permeability composite material powder and a preparation method thereof, which belong to the technical field of magnetic powder core preparation. The composite material powder comprises vacuum atomized iron silicon aluminum powder of less than -250 mesh, atomized iron silicon powder of less than -400 mesh and vacuum atomized iron nickel of more than +400 mesh,wherein the weight ratio of the three is (1.8-2.2) to (0.8-1.2) to (3-3.4). The preparation method comprises the following steps of A) proportioning, B) insulation coating, C) pressing, D) sinteringand E) test. The advantages of all aspects such as low loss of the atomized iron silicon aluminum powder, high superposition of the atomized iron silicon powder and high superposition and low loss ofthe atomized iron nickel powder are comprehensively used, ultra-high performance and formability of the powder under specific gradation are applied, a physical coating method is then applied to insulation and bonding, a magnetic core after press molding is subjected to annealing treatment, and a magnetic powder core composite material with excellent comprehensive performance can thus be obtained.

Description

technical field [0001] The invention belongs to the technical field of magnetic powder core preparation, and more specifically relates to a high magnetic permeability composite material powder and a preparation method thereof. Background technique [0002] Soft magnetic composite materials have been widely researched and applied in recent years due to their excellent 3D isotropic magnetic properties, high saturation magnetic flux density, low loss, and easy processing into various complex shapes. Soft magnetic composite material is a kind of soft magnetic material obtained by coating the surface of magnetic powder with a layer of insulating material and then pressing it by powder metallurgy. For soft magnetic composite materials, magnetic permeability is a key technical indicator. [0003] Soft magnetic composite material is a new type of material manufactured by powder metallurgy technology. At present, the preparation process of alloy powder mainly adopts water atomizati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F1/147H01F41/02B22F1/00B22F3/02B22F3/10
CPCH01F1/147H01F1/14758H01F1/14766H01F1/14791H01F41/0246H01F41/0206B22F3/02B22F3/10B22F1/102
Inventor 赵利明朱青林赵光陈实汪龙保纪国峰
Owner 马鞍山新康达磁业股份有限公司
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