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A kind of preparation method of amorphous alloy thin strip with reduced residual thermal stress

A technology of residual thermal stress and amorphous alloys, applied in metal processing equipment, manufacturing tools, casting equipment, etc., can solve the problems of no significant effect, reduce the residual thermal stress of amorphous alloys, etc., and achieve controllability and repeatability Strong, improved thermal stability, high technical reliability

Active Publication Date: 2021-03-16
JIANGSU JICUI ANTAI CHUANGMING ADVANCED ENERGY MATERIALS RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The method provided by the above-mentioned patent is only to improve the formability of the amorphous alloy, and has no significant effect on reducing the residual thermal stress in the amorphous alloy

Method used

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  • A kind of preparation method of amorphous alloy thin strip with reduced residual thermal stress
  • A kind of preparation method of amorphous alloy thin strip with reduced residual thermal stress
  • A kind of preparation method of amorphous alloy thin strip with reduced residual thermal stress

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preparation example Construction

[0041] Such as figure 1 Shown, a kind of amorphous alloy strip preparation method that reduces residual thermal stress comprises the following steps:

[0042] Step 1. Obtain the minimum casting temperature of the alloy melt: the master alloy is melted into an alloy melt, and the alloy melt is cooled and cast, and supercooled and solidified into the first amorphous alloy thin strip during the forming process to obtain the minimum casting temperature of the alloy melt temperature.

[0043] The master alloy is melted into an alloy melt, the alloy melt is overheated and then gradually cooled down and cast at a plurality of different melt temperatures to prepare the first amorphous alloy thin strip, when crystals begin to appear in the first amorphous alloy thin strip phase, the previous melt casting temperature that can obtain a completely amorphous alloy and is closest to the casting temperature at which the crystal phase appears is the lowest casting temperature. That is to sa...

Embodiment 1

[0070] The master alloy material used in this embodiment is Fe 82 P 2 Si 2 B 14 , where the subscript number is at% content; the preparation method of the amorphous alloy strip is high-speed planar flow continuous casting; the cooling device is a cooling roll.

[0071] (1) Under the cooling capacity that the original temperature of the cooling water in the cooling roll is 20°C and the original thickness of the copper sleeve on the cooling roll is 22mm, Fe is measured 82 P 2 Si 2 B 14 The minimum casting temperature of the alloy is 1130°C, the specific steps are as follows:

[0072] Will Fe 82 P 2 Si 2 B 14 The alloy material is melted into an alloy melt, and the melted alloy melt is overheated at 1450°C, and then cooled to 1300°C for melt casting, and then the melt is cast at a temperature of 20°C successively to obtain supercooled solidification at different casting temperatures Formed amorphous alloy thin strip. When it is found that the crystal phase begins to a...

Embodiment 2

[0080] The master alloy material used in this embodiment is Fe 82 PSi 2 B 14 C, where the figure is the at% content; the preparation method of the amorphous alloy strip is a high-speed planar flow continuous casting method; the cooling device is a cooling roll,

[0081] (1) with embodiment 1, the original temperature of cooling water in the cooling roll is 20 ℃, and the original thickness of copper sleeve on the cooling roll is 22mm; Obtain Fe 82 PSi 2 B 14 The minimum casting temperature of the C alloy melt is 1130 °C, and the in-situ measurement of Fe on the copper sleeve of the cooling roll 82 PSi 2 B 14 C The solidification temperature of the amorphous alloy melt, for example, when the casting temperature is 1300 °C, the solidification temperature is 455 °C, when the casting temperature is 1215 °C, the solidification temperature is 365 °C, when the casting temperature is 1130 °C, the solidification temperature It is 305°C. (2) Select the intermediate temperature be...

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Abstract

The invention provides an amorphous alloy thin strip preparation method capable of reducing residual thermal stress. The method comprises the following steps of reducing the ineffective superheat degree of an alloy melt during casting; firstly, obtaining the lowest casting temperature of the alloy melt; selecting the intermediate temperature between the lowest casting temperature and the normal casting temperature as the second casting temperature; reducing the ineffective supercooling degree of the alloy melt during casting; gradually reducing the cooling capacity of a cooling roller at the certain specific second casting temperature, preparing a second amorphous alloy thin strip, and in-situ measuring the solidification temperature of the alloy melt; when a crystal phase is started to begenerated in the second amorphous alloy thin strip, taking the above-mentioned solidification temperature generated when fully amorphous alloy can be obtained as the highest solidification temperature; then obtaining the correlation relationship between the second casting temperature as well as the highest solidification temperature and the cooling capacity; and preparing a target product, specifically, according to the correlation relationship, selecting and setting the casting temperature and setting the cooling capacity, and preparing the target product. The method can reduce the residualthermal stress in the amorphous alloy structure.

Description

technical field [0001] The invention belongs to the technical field of production of amorphous alloy thin strips, and in particular relates to a method for preparing amorphous alloy thin strips for reducing residual thermal stress. Background technique [0002] Amorphous alloy thin strip is a new type of soft magnetic material that came out in the 1970s. It adopts rapid solidification technology to melt molten steel at a rate of 1×10 6 The cooling rate of ℃ / S is directly cooled into a thin metal strip with a thickness of only 20μm-40μm. Compared with the traditional metal strip production process, it saves 5-6 processes, and the production process is energy-saving and pollution-free. Cooling technology, an amorphous alloy structure with short-range order and long-range disorder in the arrangement and combination of atoms in the strip. The alloy has the characteristics of excellent magnetism, corrosion resistance, wear resistance, high hardness and high resistivity, etc., an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22D11/06B22D11/18B22D2/00C22C38/02
CPCB22D2/006B22D11/0611B22D11/18C22C38/002C22C38/02
Inventor 王岩国周少雄张广强董帮少李宗臻
Owner JIANGSU JICUI ANTAI CHUANGMING ADVANCED ENERGY MATERIALS RES INST CO LTD
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