A kind of metal soft magnetic silicon aluminum alloy powder and preparation method thereof

A technology of iron-silicon-aluminum alloy and silicon-aluminum alloy, which is applied in the field of preparation of metal soft magnetic materials, can solve problems such as easy to pierce the insulating coating layer, difficult to obtain magnetic powder cores, and easy to segregate, etc., to improve the comprehensive magnetic properties, Effect of reducing damage and improving fragility

Active Publication Date: 2019-01-25
马鞍山新康达磁业股份有限公司
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  • Abstract
  • Description
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Problems solved by technology

[0007] In view of the fact that the existing FeSiAl alloy powder presents irregular polygons and has edges and corners, it is very easy to pierce the insulating coating layer during pressing, and the particle size distribution of the sendust aluminum alloy powder is wide, which is prone to segregation, making it difficult for the magnetic powder core to obtain a higher pressure. In order to solve the problem of tightness, the present invention provides a metal soft magnetic silicon-aluminum alloy powder and its preparation method. The particle size distribution of the prepared sendust aluminum alloy powder is narrow and adjustable, and the shape of the powder is a regular polygon with sharp corners. less, which is beneficial to ensure the effect of insulation coating, and the sendust magnetic powder core after molding, pressing and sintering has excellent comprehensive magnetic properties

Method used

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  • A kind of metal soft magnetic silicon aluminum alloy powder and preparation method thereof
  • A kind of metal soft magnetic silicon aluminum alloy powder and preparation method thereof
  • A kind of metal soft magnetic silicon aluminum alloy powder and preparation method thereof

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Embodiment 1

[0038] The realization steps of the preparation method of the sendust aluminum alloy powder proposed by the present invention are:

[0039] Step S101, batching process: each raw material is weighed and batched separately, and the weight percentage of each raw material is: 84.65% of pure iron for furnace charge, 9.60% for bulk metal silicon, and 5.75% for pure aluminum ingot; the grade of pure iron billet for furnace charge is TISCO YT01, iron content 99.9%, manganese content 0.01%; bulk metal silicon grade 2202, silicon content 99.7%, calcium content 0.02%; pure aluminum ingot grade 997, aluminum content 99.9%, copper content 0.005%;

[0040] Step S102, smelting process: smelting the above prepared raw materials by non-vacuum induction heating, first put iron in the non-vacuum intermediate frequency induction furnace, set the induction power of the intermediate frequency induction furnace to melt the iron; after the iron is melted, adjust Low-medium frequency induction furnac...

Embodiment 2

[0052] The realization steps of the preparation method of the sendust aluminum alloy powder proposed by the present invention are:

[0053] Step S101, batching process: each raw material is weighed and batched separately, and the weight percentage of each raw material is: 84.65% of pure iron for furnace charge, 9.50% for massive metal silicon, and 5.85% for pure aluminum ingot; the grade of pure iron billet for furnace charge is TISCO YT01, the iron content is 99.9%, of which the manganese content is 0.01%; the grade of bulk metal silicon is 441, the silicon content is 99.2%, and the calcium content is 0.08%; the grade of pure aluminum ingot is Chalco 997, the aluminum content is 99.8%, and the copper content is 0.009%;

[0054] Step S102, smelting process: smelting the above prepared raw materials by non-vacuum induction heating, first put iron in the non-vacuum intermediate frequency induction furnace, set the induction power of the intermediate frequency induction furnace t...

Embodiment 3

[0067] The realization steps of the preparation method of the sendust aluminum alloy powder proposed by the present invention are:

[0068] Step S101, batching process: each raw material is weighed and batched separately, and the weight percentage of each raw material is: furnace charge pure iron 84.82%, bulk metal silicon 9.42%, pure aluminum ingot 5.76%; the grade of furnace charge pure iron billet is Taiyuan Iron and Steel Co., Ltd. YT01, iron content 99.8%, of which manganese content 0.02%; block metal silicon grade is 2202, silicon content 99.7%, calcium content 0.02%; pure aluminum ingot grade is China Aluminum 997, aluminum content 99.9%, of which copper content 0.006%;

[0069] Step S102, smelting process: smelting the above prepared raw materials by non-vacuum induction heating, first put iron in the non-vacuum intermediate frequency induction furnace, set the induction power of the intermediate frequency induction furnace to melt the iron; after the iron is melted, a...

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Abstract

The invention relates to a preparing method of metal soft magnetic iron silicon aluminum alloy powder, and belongs to the technical field of metal soft magnetic material manufacturing. The preparing method comprises the steps that a furnace burden pure iron square billet, bulk metal silicon and a pure aluminum ingot are used as raw materials, and the raw materials are weighed according to the proportion; a non-vacuum medium-frequency induction furnace is used to induce, smelt and obtain alloy molten steel of the required components, and an alloy ingot is obtained after casting; the alloy ingotis crushed, and then a particle material with the particle size being below 5 mm is obtained; then fine powder of 180 meshes is obtained through a crushing ball mill technology; and finally, the ironsilicon aluminum alloy powder is obtained through annealing of 800-850 DEG C under nitrogen atmosphere and even mixing. The particle size distribution of the iron silicon aluminum alloy powder prepared by the method is narrow and adjustable, the shape of the powder is in a regular polygon, sharp corners are few, the effect of insulating coating is ensured advantageously, and the comprehensive magnetic properties of an iron silicon aluminum magnetic powder core after forming and pressing and sintering are excellent.

Description

technical field [0001] The invention belongs to the technical field of preparation of metal soft magnetic materials, and relates to a metal soft magnetic silicon-aluminum alloy powder and a preparation method thereof. Background technique [0002] Because metal soft magnetic materials have special functions of magnetoelectric conversion and energy storage filtering, they are widely used in various circuit designs of solar power generation, wind power generation, high-power lighting power supply, large electric vehicle fast charger and industrial control equipment. The iron-nickel and iron-nickel-molybdenum magnetic powder cores used to make alloy magnetic powder cores are expensive, and sendust magnetic powder cores, as a new type of magnetic material for electronic devices, have high saturation magnetic induction, high AC and DC superposition characteristics and good temperature. Stability, low loss, low cost, suitable for high frequency, high power, miniaturization and ant...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C38/02C22C38/06C22C33/04B22F1/00B22F9/04H01F1/147
CPCB22F1/0003B22F9/04C22C33/04C22C38/02C22C38/06H01F1/14791
Inventor 赵利明陈小林赵光张海龙薛健王健许俊豪
Owner 马鞍山新康达磁业股份有限公司
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