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
CN107675074BActive Publication Date: 2019-01-25马鞍山新康达磁业股份有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
马鞍山新康达磁业股份有限公司
Publication Date
2019-01-25

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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.
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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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