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Soft magnetic alloy powder and preparation method thereof, magnetic ring inductor and production method thereof

A technology of soft magnetic alloy and alloy powder, which is applied in the direction of inductance with magnetic core, inductance/transformer/magnet manufacturing, transformer/inductance parts, etc., which can solve the problem of low oxygen content and easy puncture of powder dispersive powder Insulation layer, deterioration of soft magnetic properties and other problems, to achieve the effect of strong breakdown resistance, good powder dispersion, and excellent DC superposition characteristics

Pending Publication Date: 2020-11-20
TIZ ADVANCED ALLOY TECH CO LTD
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  • Application Information

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Problems solved by technology

[0005] In view of the problem that the soft magnetic composite material in the prior art is easy to pierce the insulating layer during the pressing process of the powder core, resulting in a sharp deterioration of the soft magnetic properties, the present invention adopts the gas-jet water-cooled atomization method to prepare the alloy composition as FeCuNbSiBP amorphous powder precursor , combined with the corresponding heat treatment process to crystallize and anneal the amorphous alloy precursor, the obtained amorphous nanocrystalline FeCuNbSiBP alloy powder has good sphericity, high tap density, good powder dispersibility, and low powder oxygen content. characteristics, in order to provide an industrial demonstration for the large-scale production of iron-based amorphous nanocrystalline magnetic ring inductors

Method used

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  • Soft magnetic alloy powder and preparation method thereof, magnetic ring inductor and production method thereof
  • Soft magnetic alloy powder and preparation method thereof, magnetic ring inductor and production method thereof
  • Soft magnetic alloy powder and preparation method thereof, magnetic ring inductor and production method thereof

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preparation example Construction

[0040] A method for preparing amorphous nano-soft magnetic alloy powder, the alloy powder components obtained by the method are: 6-9% Si, 1-2.5% B, 1-3% Cu, 4-7% Nb, 0.5-2% P, 82-87.5% Fe. Specific steps are as follows:

[0041] Step 1: Alloy smelting, ingredients are prepared according to the alloy composition, and industrial pure iron, pure copper, industrial ferroboron, single crystal silicon, ferroniobium and ferrophosphorus are selected as raw materials with a purity of 99.9%, and the alloy raw materials are added to the corundum crucible to control the smelting The power is 200-300KW, and the smelting time is 60.0-80.0 minutes. When the temperature of the molten steel reaches 1500-1520°C, the power is reduced to 100-150KW, and the molten steel is slag-forming and deoxidized with an appropriate amount of silicon-calcium and lime. The process takes 10.0 minutes -15.0 minutes, then remove the slag and pour steel. The smelting adopts intermediate frequency induction smelti...

Embodiment 1

[0054] The preparation method of amorphous nano-soft magnetic alloy powder in the present embodiment, concrete steps are as follows:

[0055] Step 1: Alloy smelting. The alloy powder components are: 6.5% Si, 1.7% B, 1.5% Cu, 5.8% Nb, 0.5% P, and the rest is Fe. The ingredients are made according to the alloy composition, and industrial pure iron with a purity of 99.9%, pure copper, industrial ferroboron, single crystal silicon, ferroniobium and ferrophosphorus are selected as raw materials, and the alloy raw materials are added to the corundum crucible, and the smelting power is controlled to 250KW, and the smelting time is long 70 minutes, when the temperature of the molten steel reaches 1500°C, reduce the power to 120KW, use appropriate amount of silicon calcium and lime to deoxidize the molten steel, the process lasts for 10 minutes, then clean the slag and cast steel. The smelting adopts intermediate frequency induction smelting.

[0056] Step 2: Air-spray water-cooled at...

Embodiment 2

[0061] The preparation method of amorphous nano-soft magnetic alloy powder in the present embodiment, concrete steps are as follows:

[0062] Step 1: Alloy smelting. The alloy powder components are: 7% Si, 2.1% B, 1.5% Cu, 5.8% Nb, 0.2% P, and the rest is Fe. The ingredients are made according to the alloy composition, and industrial pure iron with a purity of 99.9%, pure copper, industrial ferroboron, single crystal silicon, ferroniobium and ferrophosphorus are selected as raw materials, and the alloy raw materials are added to the corundum crucible, and the smelting power is controlled to 200KW, and the smelting time is long 60 minutes, when the temperature of the molten steel reaches 1520°C, reduce the power to 100KW, use appropriate amount of silicon calcium and lime to deoxidize the molten steel, the process lasts for 15 minutes, then clean the slag and cast steel. The smelting adopts intermediate frequency induction smelting.

[0063] Step 2: Air-spray water-cooled atom...

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Abstract

The invention discloses a soft magnetic alloy powder and a preparation method thereof, and a magnetic ring inductor and a produciton method thereof, and belongs to the field of alloy materials. The method comprises the steps of selecting industrial pure iron with a purity of 99.9%, pure copper, industrial ferroboron, monocrystalline silicon, ferroniobium and ferrophosphorus as raw materials, adding into a corundum crucible, carrying out steel burning, adopting a supersonic speed gas atomization nozzle, carrying out water-powder separation on the powder obtained through atomization, and carrying out vacuum drying to obtain the required amorphous powder precursor; and acquiring a required amorphous nano soft magnetic alloy powder through batch treatment of crystallization annealing treatment, powder grading and screening. The powder and the preparation method, and the inductor and the method have beneficial effects that through medium-frequency induction melting, gas-water spraying, water cooling and atomization, in cooperation with the procedures of later-period water-powder separation, vacuum drying, crystallization annealing treatment, powder grading, screening and the like, the prepared powder is good in sphericity degree, low in oxygen content, reasonable in particle size distribution and the like.

Description

technical field [0001] The invention relates to the field of alloy materials, in particular to a soft magnetic alloy powder and a preparation method thereof, a magnetic ring inductance and a preparation method thereof. Background technique [0002] As the electronic market has higher and higher requirements for high frequency, light weight, miniaturization and high performance of components, amorphous and nanocrystalline dual-phase composite soft magnetic alloy materials with fine and uniform crystal phases (usually less than 50nm) received increasing attention. This kind of alloy can usually be obtained by crystallization heat treatment of amorphous materials, that is, the amorphous precursor is first prepared by the melt quenching method, and then obtained after crystallization and annealing at an appropriate temperature. The typical microstructure of Fe-based nanocrystalline soft magnetic materials is composed of two phases: amorphous matrix and α-Fe(Si) nanocrystalline ...

Claims

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Application Information

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IPC IPC(8): H01F1/153H01F17/06H01F27/255H01F41/02
CPCH01F1/15308H01F1/15333H01F1/1535H01F41/0246H01F17/06H01F27/255
Inventor 乐晨唐明强陈义华赵放
Owner TIZ ADVANCED ALLOY TECH CO LTD
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