Preparing method of ultrathin amorphous alloy strip

A technology of amorphous alloys and strips, which is applied in the field of preparation of amorphous alloy strips, and can solve the problems of affecting the flatness of the outer surface of the strip, prone to scratches on the outer surface of the strip, and large internal stress of the amorphous strip. , to achieve the effect of improving quality and finished product performance, enhancing scraping and correction, and uniform thickness

Active Publication Date: 2015-11-04
CHINA WEAPON SCI ACADEMY NINGBO BRANCH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, under the condition that the molten steel laminar flow is perpendicular to the surface of the cooling carrier and the cooling rate is millions of degrees per second, it is easy to cause a large internal stress inside the prepared amorphous strip, which leads to the deformation of the amorphous strip. It becomes brittle, and the existence of internal stress makes the strip have a certain arc in the transverse direction, which affects the processability of subsequent applications
In addition, the perpendicularity between the laminar flow of molten steel and the surface of the cooling carrier also directly affects the flatness of the outer surface of the strip, and the outer surface of the strip is prone to defects such as scratches

Method used

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  • Preparing method of ultrathin amorphous alloy strip
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  • Preparing method of ultrathin amorphous alloy strip

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Embodiment 1

[0029] The preparation method of the ultrathin amorphous alloy strip of the present embodiment comprises the following steps:

[0030] (1) Using Co 69 Fe 4 Ni 2 Si 10 B 15 The alloy is a master alloy, which is put into an intermediate frequency induction furnace for induction heating and melting, and heated to 100°C above the melting point of the target master alloy for slag removal treatment;

[0031] (2) Preheat the nozzle package to 800°C in advance, then pour the molten steel obtained in step (1) into the nozzle package through the heat preservation launder, and adjust the molten steel c to be between the upper end surface of the molten steel and the bottom of the nozzle a The height difference is 10cm. The molten steel c enters the nozzle a through the filter hole. Under the pressure of 0.1MPa, the molten steel is sprayed obliquely to the surface of the cooling body b through the flow channel a1 at the lower end of the nozzle a, and the spraying direction of the molte...

Embodiment 2

[0035] The preparation method of the ultrathin amorphous alloy strip of the present embodiment comprises the following steps:

[0036] (1) Using Fe 77 Si 8 B 15 The alloy is a master alloy, which is put into an intermediate frequency induction furnace for induction heating and melting, and heated to 200°C above the melting point of the target master alloy for slag removal treatment;

[0037] (2) Preheat the nozzle package to 1000°C in advance, then pour the molten steel obtained in step (1) into the nozzle package through the heat preservation launder, and adjust the molten steel c to be between the upper end surface of the molten steel and the bottom of the nozzle a The height difference is 100cm, the molten steel c enters the nozzle a through the filter hole, and the molten steel sprays obliquely to the surface of the cooling body b under the pressure of 0.3MPa, and the spraying direction of the molten steel is opposite to the rotation direction of the cooling body b, and ...

Embodiment 3

[0041] The preparation method of the ultrathin amorphous alloy strip of the present embodiment comprises the following steps:

[0042] (1) Using Co 69 Fe 4 Ni 2 Si 10 B 15The alloy is a master alloy, which is put into an intermediate frequency induction furnace for induction heating and melting, and heated to 100°C above the melting point of the target master alloy for slag removal treatment;

[0043] (2) Preheat the nozzle package to 900°C in advance, then pour the molten steel obtained in step (1) into the nozzle package through the heat preservation launder, and adjust the molten steel c to be between the upper end surface of the molten steel and the bottom of the nozzle a The height difference is 50cm. The molten steel c enters the nozzle a through the filter hole. Under the pressure of 0.25MPa, the molten steel is sprayed obliquely to the surface of the cooling body b through the flow channel a1 at the lower end of the nozzle a, and the spraying direction of the molte...

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Abstract

The invention relates to a preparing method of an ultrathin amorphous alloy strip. Molten steel obliquely sprays the surface of a cooling body, and the spraying direction of the molten steel is opposite to the rotating direction of the cooling body. Meanwhile, the distance between the lower end face of a nozzle and the cooling body is reduced, and therefore the scraping pressing and correcting functions on molten steel laminar flow from the lower end face of the nozzle are improved, and the prepared amorphous alloy strip is thin and even. Meanwhile, the smoothness and density of the free surface of the amorphous alloy strip are improved. The acute angle formed between a nozzle runner and the surface of the cooling body is set in the range of 15-85 degrees, the transverse disturbance of the amorphous alloy strip to the laminar flow molten liquid is small in cooperation with the scraping pressing and correcting functions of the lower end face of the nozzle, and therefore the surface stress of the strip is reduced, and the transverse radian of the strip is reduced; and the quality and the finished product performance of the amorphous alloy strip are improved.

Description

technical field [0001] The invention relates to the technical field of preparation of amorphous alloy strips, in particular to a preparation method of ultra-thin amorphous alloy strips. Background technique [0002] Amorphous soft magnetic alloys have excellent soft magnetic properties. Amorphous soft magnetic alloys are widely used in different fields such as power electronics, aerospace, transportation, electronic information and communication, etc., in pursuit of miniaturization, low loss, ultra- sensitive targets. Ultra-thinning is an effective means to improve the soft magnetic properties of amorphous soft magnetic alloys. As the thickness decreases, the saturation magnetic induction, coercivity, loss and other properties of amorphous soft magnetic alloys will be further optimized, which is a very ideal A new type of functional material that can replace traditional materials used in electronic and electrical equipment to achieve better results. [0003] In the existin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/02B22D11/06
Inventor 纪松郝洁张延松黄敬晖丁昂钱坤明李明利杨润田张泽强
Owner CHINA WEAPON SCI ACADEMY NINGBO BRANCH
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