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Amorphous nanocrystalline alloy strip and preparation method thereof

An amorphous nanocrystalline, alloy ribbon technology, applied in the direction of magnetic materials, magnetic objects, circuits, etc., can solve the problems of coiling interruption, failure to eliminate or reduce broadband shrinkage stress, strip fracture, etc., to ensure the effect of cooling effect.

Pending Publication Date: 2022-05-20
AT&M AMORPHOUS TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, although this method can avoid the early stripping of the broadband, it does not eliminate or alleviate the shrinkage stress of the broadband during the rapid cooling process. If this shrinkage stress is not relaxed, it may cause the strip to break and make the coiling to interrupt

Method used

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  • Amorphous nanocrystalline alloy strip and preparation method thereof
  • Amorphous nanocrystalline alloy strip and preparation method thereof
  • Amorphous nanocrystalline alloy strip and preparation method thereof

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0038] In the embodiment of the present invention, the iron-based amorphous nanocrystalline alloy strip is prepared by a planar flow rapid solidification process, and the raw materials used are industrial-grade pure elements or alloys. The specific preparation method is as follows:

[0039] First, a certain ratio of raw materials is melted into alloy liquid in a smelting furnace, and the smelted alloy liquid can be poured into the tundish for temperature adjustment and production rhythm buffering. Then, the molten alloy is poured into a nozzle bag with a slit nozzle at the bottom. The alloy liquid in the nozzle package flows out of the nozzle, spreads on the outer peripheral surface of the high-speed rotating copper alloy cooling roll under the nozzle, and is rapidly cooled to form a continuous strip with an amorphous or nanocrystalline structure.

[0040] In the present embodiment, the raw material composition of the amorphous nanocrystalline alloy strip is Fe 79 Si 9 B 12...

Embodiment 2

[0045] In the embodiment of the present invention, the iron-based amorphous nanocrystalline alloy strip is prepared by a planar flow rapid solidification process, and the raw materials used are industrial-grade pure elements or alloys. The specific preparation method is as follows:

[0046] First, a certain ratio of raw materials is melted into alloy liquid in a smelting furnace, and the smelted alloy liquid can be poured into the tundish for temperature adjustment and production rhythm buffering. Then, the molten alloy is poured into a nozzle bag with a slit nozzle at the bottom. The alloy liquid in the nozzle package flows out of the nozzle, spreads on the outer peripheral surface of the high-speed rotating copper alloy cooling roll under the nozzle, and is rapidly cooled to form a continuous strip with an amorphous or nanocrystalline structure.

[0047] In the present embodiment, the raw material composition of the amorphous nanocrystalline alloy strip is Fe 82 Si 4 B 13...

Embodiment 3

[0052] In the embodiment of the present invention, the iron-based amorphous nanocrystalline alloy strip is prepared by a planar flow rapid solidification process, and the raw materials used are industrial-grade pure elements or alloys. The specific preparation method is as follows:

[0053] First, a certain ratio of raw materials is melted into alloy liquid in a smelting furnace, and the smelted alloy liquid can be poured into the tundish for temperature adjustment and production rhythm buffering. Then, the molten alloy is poured into a nozzle bag with a slit nozzle at the bottom. The alloy liquid in the nozzle package flows out of the nozzle, spreads on the outer peripheral surface of the high-speed rotating copper alloy cooling roll under the nozzle, and is rapidly cooled to form a continuous strip with an amorphous or nanocrystalline structure.

[0054] In the present embodiment, the raw material composition of the amorphous nanocrystalline alloy strip is Fe 83 Si 3 B 11...

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Abstract

The invention relates to an amorphous nanocrystalline alloy strip and a preparation method thereof. The amorphous nanocrystalline alloy strip is manufactured by adopting a plane flow technology, the surface temperature of the outer circumference of a cooling roller is controlled to be 70-150 DEG C in the preparation process, and the stripping temperature range of the strip when the strip is stripped from the surface of the cooling roller is controlled to be 120-200 DEG C. According to the amorphous nanocrystalline alloy strip prepared through the method, the toughness value is not larger than 3.0 in the areas, accounting for 30% of the wide band, of the two sides of the wide band; and the toughness value in other areas is not greater than 1.5. The broadband is longitudinally cut into narrow strips with the width of 10 mm, and the relative deviation of the specific total loss of the narrow strips is not larger than + / -15%. According to the preparation technology, the toughness and the magnetic performance of the strip can be guaranteed, and especially the transverse toughness and the magnetic performance are consistent; the device can ensure that the strip cannot be broken due to shrinkage stress in the manufacturing process, ensure that the coiling process is not interrupted, and also ensure that the strip cannot be broken in the subsequent processing process.

Description

technical field [0001] The invention relates to the research field of soft magnetic materials in the field of magnetic functional materials, in particular to an amorphous nanocrystalline alloy strip with good toughness and lateral consistency of magnetic properties and a preparation method thereof. Background technique [0002] Amorphous nanocrystalline alloy is a kind of soft magnetic material that has been developed rapidly in recent years. Compared with traditional soft magnetic materials such as electrical steel and ferrite, it has higher magnetic permeability and lower AC loss, and has been widely used Iron cores in magnetic components such as transformers, inductors, transformers, and motor stators. When used in transformers, inductors, transformers, motor stators, etc., generally the amorphous nanocrystalline alloy strips with a thickness of only about 0.025 mm are wound or stacked into iron cores. For the strip with a width of more than 50mm, it is often first cut i...

Claims

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Application Information

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IPC IPC(8): B22D11/06B22D11/16C22C45/02C22C45/04H01F1/153
CPCB22D11/0611C22C45/02C22C45/04B22D11/16H01F1/15308H01F1/15316H01F1/15341H01F1/15391
Inventor 陈文智史扬李百松刘国栋李志刚
Owner AT&M AMORPHOUS TECH CO LTD
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