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An iron-based amorphous strip material with high saturation magnetic induction and its preparation method

A technology of iron-based amorphous and amorphous strip materials, applied in the direction of magnetic materials, magnetic objects, electrical components, etc., can solve the problems of low coercive force, low iron loss, high elastic modulus, etc.

Inactive Publication Date: 2021-02-05
山东海瑞得新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the iron-based amorphous strips used to prepare transformers in the prior art cannot achieve a saturation magnetic induction higher than 1.65T, and at the same time have low coercive force, low iron loss, and high elastic modulus.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Example 1 An iron-based amorphous ribbon with high saturation magnetic induction and its preparation method

[0029] Preparation:

[0030] Step 1. Smelting

[0031] The raw materials used are the available renewable resources, such as waste steel and transformer iron cores, etc., and are re-melted to make the composition reach 86.5% iron, 6% boron, 2% silicon, 0.5% chromium, 0.2% molybdenum, 0.3% nickel, Aluminum 0.2%, tungsten 0.5%, and the rest are impurities.

[0032] SCR 12-pulse intermediate frequency series power supply melting furnace is used for melting, and argon gas is filled to protect the melt during melting. The heating temperature of the melting furnace is 1250°C; the power of the melting furnace is 3000kw, and the capacity of the melting furnace is 6 tons; the melting time is 50 -60min.

[0033] During smelting, the electric furnace induction coil is used to magnetically stir the molten iron to facilitate slag removal and degassing, and the frequency o...

Embodiment 2

[0043] Example 2 An iron-based amorphous ribbon with high saturation magnetic induction and its preparation method

[0044] Preparation:

[0045] Step 1. Smelting

[0046]The raw materials used are the use of renewable resources, waste steel and transformer iron cores, etc., and remelted to make the composition reach 87.4% iron, 7.5% boron, 2.3% silicon, 0.6% chromium, 0.3% molybdenum, 0.4% nickel, aluminum 0.3%, tungsten 0.6%, and the rest are impurities.

[0047] SCR 12-pulse intermediate frequency series power supply melting furnace is used for melting, and argon gas is filled to protect the melt during melting. The heating temperature of the melting furnace is 1250°C; the power of the melting furnace is 3000kw, and the capacity of the melting furnace is 6 tons; the melting time is 50 -60min.

[0048] During smelting, an electric furnace is used to stir the molten iron, and the frequency of the electric furnace is 500hz.

[0049] Step 2. Keep warm

[0050] SCR 12-pulse...

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PUM

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Abstract

The invention relates to a preparing method of an iron-based amorphous strip high in saturated magnetic induction. The preparing method comprises the steps of heat preservation, wherein a heat preservation bottom pouring furnace is adopted for heat preservation, and the heat preservation temperature is controlled to range from 1400 DEG C to 1480 DEG C. The preparing method further comprises stripspraying, wherein the strip spraying temperature ranges from 1400 DEG C to 1600 DEG C, and the distance between a nozzle and a cooling roller ranges from 0.2 mm to 0.25 mm. The iron loss of the amorphous strip is lower than 0.2W / kg, and the iron loss change rate is smaller than 15%.

Description

technical field [0001] The invention relates to an iron-based amorphous strip with high saturation magnetic induction and a preparation method thereof, belonging to the technical field of amorphous alloys. Background technique [0002] The saturation magnetic induction (saturation magnetic flux density) refers to the magnetic induction when the magnet is magnetized to the saturation state. In practical applications, the saturation magnetic induction often refers to the magnetic induction under a specified magnetic field (basically the magnetic field when the magnetic saturation is reached). The atoms of the iron-based amorphous strip are in an amorphous structure with random arrangement, which makes it have a narrow B-H loop, high magnetic permeability and low loss; at the same time, the irregular arrangement of amorphous alloy atoms restricts the free passage of electrons As a result, the resistivity is 2-3 times higher than that of crystal alloys, which is also conducive ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C45/02C22C33/04B22D11/06H01F1/153
CPCB22D11/0611C22C33/003C22C33/04C22C45/02C22C2200/02C22C2202/02H01F1/15308H01F1/15341
Inventor 滕晓群隋建都
Owner 山东海瑞得新材料科技有限公司