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High-frequency FeSiAl alloy powder and preparation method thereof

An alloy powder and high-frequency technology is applied in the field of high-frequency FeSiAl alloy powder and its preparation, which can solve the problems of difficult compaction of magnetic powder cores, easy piercing of insulating coating layers, easy occurrence of segregation, etc. Improve and simplify the smelting process, the effect of high sphericity

Active Publication Date: 2018-02-09
马鞍山新康达磁业有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] 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 sendust aluminum powder is wide, which is prone to segregation, making it difficult for the magnetic powder core to obtain higher compaction In order to solve the problem of non-resistance, the present invention provides a high-frequency FeSiAl alloy powder and its preparation method, which is applied to high-frequency low-loss FeSiAl magnetic powder cores. Low content, high sphericity, easy to form a uniform and dense insulating layer after insulating coating, effectively blocking the contact of the alloy matrix, the pressed magnetic powder core has the advantage of low loss, suitable for high frequency scenarios

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Embodiment 1

[0035] The preparation method of high-frequency FeSiAl alloy powder of the present invention, this method comprises the following specific steps:

[0036] Step S101, batching process: according to the batch weight and proportion of the charge, the raw materials are weighed and batched. The weight percentage of each raw material is: rod-shaped polished iron 84.55%, massive metal silicon 9.60%, pure aluminum ingot 5.85%; rod-shaped polished iron The brand name of Taiyuan Iron and Steel Co., Ltd. is YT01, with iron content of 99.9%, of which manganese content is 0.02%; the brand name of bulk metal silicon is 2202, silicon content is 99.7%, calcium content is 0.02%; %, of which copper content is 0.005%;

[0037]Step S102, smelting process: Put the prepared raw materials into the intermediate frequency furnace, and adopt vacuum melting: a) The material distribution method is: the rod-shaped polished iron of the furnace charge is placed against the furnace wall of the intermediate f...

Embodiment 2

[0049] The preparation method of high-frequency FeSiAl alloy powder of the present invention, this method comprises the following specific steps:

[0050] Step S101, batching process: according to the batch weight and proportion of the charge, the raw materials are weighed and batched. The weight percentage of each raw material is: rod-shaped polished iron 84.65%, massive metal silicon 9.60%, pure aluminum ingot 5.75%; rod-shaped polished iron The brand of Taiyuan Iron and Steel Co., Ltd. is YT01, with iron content of 99.9%, of which manganese content is 0.03%; the brand of bulk metal silicon is 441, with silicon content of 99.2%, and calcium content of 0.08%; %, of which copper content is 0.005%;

[0051] Step S102, smelting process: Put the prepared raw materials into the intermediate frequency furnace, and adopt vacuum melting: a) The material distribution method is: the rod-shaped polished iron of the furnace charge is placed against the furnace wall of the intermediate fr...

Embodiment 3

[0062] The preparation method of high-frequency FeSiAl alloy powder of the present invention, this method comprises the following specific steps:

[0063] Step S101, batching process: according to the batch weight and proportion of the furnace charge, the raw materials are weighed and batched. The weight percentage of each raw material is: rod-shaped polished iron 84.40%, massive metal silicon 9.60%, pure aluminum ingot 6.0%; rod-shaped polished iron The brand name of Taiyuan Iron and Steel Co., Ltd. is YT01, with iron content of 99.9%, of which manganese content is 0.02%; the brand name of bulk metal silicon is 2202, silicon content is 99.7%, calcium content is 0.02%; %, of which copper content is 0.002%;

[0064] Step S102, smelting process: Put the prepared raw materials into the intermediate frequency furnace, and adopt vacuum melting: a) The material distribution method is: the rod-shaped polished iron of the furnace charge is placed against the furnace wall of the interm...

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Abstract

The invention discloses high-frequency FeSiAl alloy powder and a preparation method of the high-frequency FeSiAl alloy powder and belongs to the technical field of powder preparation. According to thepreparation method, rodlike polished iron, bulky metal silicon and pure aluminum ingots are used as raw materials, material mixing and weighing are conducted according to the ratio, and alloy steel liquid of the needed component is obtained through vacuum smelting; and then, alloy raw powder is prepared through inert gas atomization is prepared, and fine powder is obtained after the raw powder iscollected and screened. By the adoption of the high-frequency FeSiAl alloy powder, the alloy powder uniform in component and high in purity is obtained beneficially, the sphericity degree of the powder is high, a uniform compact insulated layer can easily form after insulated cladding, contact of an alloy matrix is effectively isolated, a pressed magnetic powder core has the advantage of low consumption and is suitable for a high-frequency scene.

Description

technical field [0001] The invention belongs to the technical field of alloy powder preparation, and in particular relates to a high-frequency FeSiAl alloy powder and a preparation method thereof. Background technique [0002] With the development of electronic technology, equipment is developing in the direction of miniaturization and light weight, and the requirements of "high frequency, miniaturization, and low power consumption" are also put forward for electronic devices. Sentinel magnetic powder cores have good frequency characteristics, low loss, and low cost, which well meet the above requirements and are increasingly widely used in the electronic field. At present, the preparation of FeSiAl soft magnetic alloy powder mostly adopts gas atomization method and mechanical crushing method. The mechanical crushing process includes alloy melting, ingot casting and crushing. The process is simple, the manufacturing cost is low, and it is suitable for large-scale production....

Claims

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Application Information

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IPC IPC(8): B22F9/08B22F1/00C21D6/00C21D1/26C22C38/02C22C38/06
CPCC21D1/26C21D6/008C22C38/02C22C38/06B22F9/082B22F1/14
Inventor 赵利明陈小林赵光张海龙潘全成王健
Owner 马鞍山新康达磁业有限公司
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