Device and process for producing amorphous strips

Abstract

The invention discloses a device and a process for producing amorphous strips, wherein the device can be used for controlling the liquid level, the pressure and the temperature of molten steel in a strip-producing ladle, and then controlling the flow of the molten steel and improving the quality of strip products, and can be used for preventing the generation of scrap strips during start-up production. The device disclosed by the invention can be used for sucking the molten steel and preventing the molten steel from flowing out from the strip-producing ladle during liquid level establishment, so as to prevent the generation of scrap strips and avoid waste; according to the device a liquid level feedback system is formed by a liquid level transmission device and an electric proportional valve, and the liquid level is adjusted to keep constant by increasing or reducing the pressure, so that the purpose of producing strips under a constant pressure is achieved; according to the device, the change of the temperature is adjusted via induction heating and temperature measurement feedback, so that a constant temperature is ensured; according to the device, constant control for the liquid level and the temperature is realized, so that the purpose of constant flow is achieved; and the amorphous strips produced by the device and the process disclosed by the invention are uniform in thickness and high in yield, so that the economic benefits are improved.

Description

technical field [0001] The invention relates to the field of amorphous alloy belt making, in particular to an amorphous belt making device and process capable of maintaining a constant liquid level and temperature of molten steel. Background technique [0002] The amorphous alloy strip is poured into the strip-making bag (ie, nozzle bag) after melting molten steel, and then the molten steel is poured on the cooling wheel by the nozzle (ie, a slit) of the tape-making bag. The completed action of the tape-making ladle is to press the molten steel from the slit of the tape-making ladle onto the cooling wheel. Because the thickness of the strip product is only 25-30 microns, the cooling rate is close to 1 million degrees per second, and the strip-out speed is close to 30 meters per second, so the strip-making process is very sensitive to pressure, temperature and flow. In order to make the thickness of the manufactured strip consistent, it is necessary to ensure that the pressu...

AI Technical Summary

Problems solved by technology

[0007] Disadvantage 1. The liquid level is only controlled by two long and short electrodes in the bag. The liquid level is not constant and fluctuates, resulting in pressure deviation.

[0008] Disadvantage 2: Heating the surface of the resistance element can only play a role of heat preservation, and cannot increase the temperature of the molten steel in the ladle, so it is impossible to adjust and control the temperature. When the temperature in the ladle drops, there is no means of heating up, and it is impossible to achieve the purpose of constant temperature

[0009] Disadvantage three, the flow is not constant

Because of the deviation of pressure and the instability of temperature, it will lead to the instability of flow

[0010] Disadvantage 4: When starting to make the strip, when the molten steel in the ladle does not reach the level required by the process, the molten steel has already begun to flow out through the slit, and the strip produced at this time is all waste strip, which is a serious waste

Therefore, the uniformity of the thickness of the produced strip is poor, the yield is low, and a lot of waste strips will be generated when starting up the production, which is a serious waste

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