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Iron-based nanocrystalline alloy ultra-thin broadband and its manufacturing method

An iron-based nanocrystalline, ultra-thin technology, used in magnetic objects, magnetic materials, electrical components, etc., can solve problems such as many impurities, nozzle deformation, and increased spray pressure.

Active Publication Date: 2020-02-18
ADVANCED TECHNOLOGY & MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This is because the amorphous alloy contains about 20% of Si and B-type metal elements, and its alloy melt has a large amorphous forming ability and good fluidity, while the nanocrystalline alloy melt has a large amount of Nb because it contains a large amount of Nb. High viscosity, so the fluidity is very poor, and it is difficult to make tapes. Using the existing specifications of amorphous alloy tapes to design and manufacture nanocrystalline broadband can only greatly increase the pressure of the spray tape and increase the temperature of the spray tape to increase the fluidity of the melt. Excessive pressure will cause the nozzle to deform or even crack the nozzle, while the temperature of the spray belt is too high will cause too many impurities in the molten metal, and also increase the risk of steel breakout, which is technically unfeasible

Method used

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  • Iron-based nanocrystalline alloy ultra-thin broadband and its manufacturing method
  • Iron-based nanocrystalline alloy ultra-thin broadband and its manufacturing method
  • Iron-based nanocrystalline alloy ultra-thin broadband and its manufacturing method

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Embodiment 1

[0119] Within the scope of the chemical composition of the iron-based amorphous alloy described in the present invention, 6 different iron-based amorphous alloy components are selected respectively, and the serial numbers are 1-6, and the nanocrystalline alloy broadband is manufactured by the planar flow casting process, and the main process parameters as follows:

[0120] (1) Use pure iron, ferroboron, ferrosilicon, ferroniobium, ferrophosphorus, copper ingot, aluminum ingot, and tin ingot as raw materials for master alloy smelting, and prepare raw materials according to the expressions of each alloy in Table 1, under the protection of argon The raw materials are melted and superheated in induction furnace or other smelting furnace 1 to form molten steel with uniform composition. The smelting temperature is 1400°C, and the smelting time is 30 minutes. After the molten steel is cleared, it is overheated at 1550°C, and the overheating time is 20 minutes, to obtain uniform molte...

Embodiment 2

[0130] The addition of trace surface active elements Al and Sn in the present invention can greatly reduce the surface tension of the melt during spraying without reducing the viscosity of the melt, and adjust the shape and shape of the molten pool by coordinating the interaction between the surface tension and viscosity of the melt. Size to improve the stability of the molten pool, so as to achieve the purpose of improving the flatness of the free surface of the strip, and reduce the difficulty of unpacking, greatly improving the process of strip production and product quality stability. Within the scope of the chemical composition of the iron-based amorphous alloy of the present invention, select 6 different iron-based amorphous alloy components respectively, and the serial numbers are 7-12 (wherein the alloys of serial numbers 7 and 11 are comparative examples), and use a plane Flow casting process to manufacture nanocrystalline alloy broadband, the main process parameters a...

Embodiment 3

[0140] The invention adopts the nozzle spray belt embedded in the molten pool, which greatly improves the stability of the molten pool and the surface quality of the free surface of the strip. The precision on-line grinding device can improve the surface quality of the roll surface of the strip, and the three parameters are coordinated with each other to further improve the quality of the ultra-thin broadband. Within the chemical composition range of the iron-based amorphous alloy described in the present invention, 6 different iron-based amorphous alloy components are selected respectively, and the serial numbers are 13-18, and the nanocrystalline alloy broadband is manufactured by the planar flow casting process, and the main process parameters as follows:

[0141] (1) Use pure iron, ferroboron, ferrosilicon, ferroniobium, ferrophosphorus, copper ingot, aluminum ingot, and tin ingot as raw materials for master alloy smelting, and prepare raw materials according to the expres...

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Abstract

An iron-based nanocrystalline alloy ultra-thin broadband and manufacturing method thereof. The ultra-thin broadband has a formula of: FexSiaBbPcNbdCueMf, wherein M is at least one of Sn or Al; and x, a, b, c, d, e, and f are atomic percentages of the corresponding elements, in which 0.5 ≤ a ≤ 10, 0.5 ≤ b ≤ 12, 0.5 ≤ c ≤ 8, 0.1 ≤ d ≤ 3, 0.1 ≤ e ≤ 1, and 0.001 ≤ f ≤ 0.05 such that x + a + b + c + d + e + f = 100. The manufacturing method adopts an improved horizontal flow casting technique. The ultra-thin broadband manufactured thereby has a width of 50-200 mm, a thickness of 0.001-0.02 mm, a horizontal band thickness offset of less than ±0.0015 mm, a stacking factor of greater than 0.80, and a saturation magnetic flux density of greater than 1.7 T. The broadband also has an iron loss of less than 0.30 W / kg under a frequency of 50 Hz and maximum magnetic flux density 1.5 T.

Description

technical field [0001] The invention belongs to the field of magnetic functional materials, and in particular relates to an iron-based nanocrystalline alloy ultra-thin broadband and a preparation method thereof, in particular to a nanocrystalline ultra-thin broadband with a bandwidth of 50-200mm, the saturation magnetic flux density is greater than 1.7T, and The iron loss is less than 0.30W / kg when the frequency is 50Hz and the maximum magnetic flux density is 1.5T. Background technique [0002] Iron-based nanocrystalline soft magnetic material is a new type of soft magnetic material, which consists of an amorphous matrix and nano-sized α-Fe(Si) grains distributed on the matrix, and the grain size is smaller than the exchange coupling length, effectively Magnetocrystalline anisotropy is reduced. By optimizing the alloy composition, the magnetostriction of nanocrystalline alloys can also be adjusted to approach zero. Its performance combines the high saturation magnetic indu...

Claims

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Application Information

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IPC IPC(8): H01F1/153B22D11/06
CPCB22D11/06H01F1/153
Inventor 李宗臻周少雄张广强董帮少高慧
Owner ADVANCED TECHNOLOGY & MATERIALS CO LTD
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