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Annular inductance element, FeSiCr soft magnetic alloy powder and preparation method of FeSiCr soft magnetic alloy powder applied to annular inductance part

A technology of toroidal inductors and soft magnetic alloys, applied in the manufacture of inductors/transformers/magnets, electrical components, metal processing equipment, etc., can solve the problems of high loss, poor rust resistance, low inductance value of toroidal inductors, etc. Low, good rust resistance, reasonable particle size distribution effect

Pending Publication Date: 2019-07-12
TIZ ADVANCED ALLOY TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] An object of the present invention is to provide a method for preparing FeSiCr soft magnetic alloy powder suitable for annular inductance parts, which overcomes the defects of high loss and poor rust resistance of conventional water atomized FeSiCr soft magnetic alloy powders in the preparation of annular inductance parts , and solve the problem of low inductance value of ring inductors prepared by gas atomized FeSiCr soft magnetic alloy powder

Method used

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  • Annular inductance element, FeSiCr soft magnetic alloy powder and preparation method of FeSiCr soft magnetic alloy powder applied to annular inductance part
  • Annular inductance element, FeSiCr soft magnetic alloy powder and preparation method of FeSiCr soft magnetic alloy powder applied to annular inductance part
  • Annular inductance element, FeSiCr soft magnetic alloy powder and preparation method of FeSiCr soft magnetic alloy powder applied to annular inductance part

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Embodiment 1

[0050] A method for preparing FeSiCr soft magnetic alloy powder suitable for ring inductors, comprising:

[0051] 1) Medium frequency induction melting: the alloy composition is (89.8wt%) Fe-3.5wt% Si-5.0wt% Cr-1.2wt% Ni-0.5wt% Mo,

[0052] According to the above alloy composition, the raw materials are fed into the corundum crucible in the order of pure iron, ferrochrome, pure nickel, pure molybdenum, and high-purity silicon for smelting. The smelting power is controlled at 200-300KW, and the smelting time is 60.0-70.0 Minutes, when the temperature of the molten steel reaches 1580-1620°C, reduce the power to 100-150KW, use appropriate amount of silicon calcium and lime to deoxidize the molten steel by slagging, the process takes 10.0 minutes, then clean the slag, start the pump and pour steel;

[0053] 2) Water-air combined atomization: Nitrogen is used as the process protection atmosphere, and the nitrogen flow rate is 25.0m3 / h; the atomization process adopts 40° / 30° primary...

Embodiment 2

[0058] The difference between this embodiment 2 and embodiment 1 is: a kind of FeSiCr soft magnetic alloy powder composition suitable for annular inductance prepared in this embodiment 2 is adjusted, and the prepared alloy powder alloy composition is: (86.3wt%) Fe-7.0wt%Si-5.0wt%Cr-1.2wt%Ni-0.5wt%Mo, the above components are all in mass percentage.

Embodiment 3

[0060] The difference between this embodiment 3 and embodiment 1 is that: in this embodiment 3, a combined water-air atomization process suitable for FeSiCr soft magnetic alloy powder for ring inductors is prepared by adjusting. The specific atomization process is as follows: nitrogen is used as the process protection atmosphere, and the nitrogen flow rate is 25.0m3 / h; 40° / 30° primary and secondary spraying plates are used, and double V-shaped nozzles; the leakage hole size at the bottom of the molten steel tundish is 3.5mm, The atomized water pressure is 110MPa, and the atomized water flow rate is 130L / min.

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Abstract

The invention discloses an annular inductance element, FeSiCr soft magnetic alloy powder and a preparation method of the FeSiCr soft magnetic alloy powder applied to the annular inductance part. An alloy comprises the following components of, in percentage by mass, 4.0%-8.0% of Cr, 2.0%-8.0% of Si, 1.2%-2.0% of Ni, 0.5%-0.8% of Mo, and 85%-92.3% of Fe. According to the method, the prepared FeSiCrsoft magnetic alloy powder is less in impurity content, uniform in alloying component and an organization structure, low in carbon and oxygen content, good in powder sphericity and in a spherical-likeshape, good in apparent density, and high in tap density; and a prepared product is good in pressing property, high in inductance value, low in power loss, good in rust resistance, and the FeSiCr soft magnetic alloy powder is capable of being widely applied as a raw material of the annular inductance element.

Description

technical field [0001] The invention relates to the preparation technology of soft magnetic alloy powder, in particular to an annular inductor, FeSiCr soft magnetic alloy powder and a preparation method thereof. Background technique [0002] Metal powder is an important powder metallurgy raw material and the foundation of powder metallurgy industry. Chemical reaction method, melt atomization method, mechanical crushing method and electrolytic deposition method are the main metal powder preparation methods at present. Among them, the alloy powder prepared by the melt atomization method has exactly the same chemical composition as the established molten alloy, and also has a typical rapid solidification structure, a wide range of alloy composition, various powder shapes, and a wide and adjustable particle size distribution. [0003] At present, the iron-silicon-chromium soft magnetic alloy powder for ring inductors produced by conventional water atomization method has high ox...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/44C22C38/02C22C33/06C21C7/06B22F9/08B22F1/00H01F1/147H01F41/00
CPCC22C38/44C22C38/34C22C33/06C21C7/06B22F9/082H01F1/14766H01F41/00B22F2009/0896B22F2009/0848B22F2009/0824B22F1/065
Inventor 乐晨唐明强赵放陈义华
Owner TIZ ADVANCED ALLOY TECH CO LTD
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