ON DEVELOPMENT AND INDUSTRIAL TESTING OF SYSTEM TO CUT-OFF SLAG FOR STEEL CASTING PROCESS

Dmitry Poleshchenko

ON DEVELOPMENT AND INDUSTRIAL TESTING OF SYSTEM TO CUT-OFF SLAG FOR STEEL CASTING PROCESS

Dmitry Poleshchenko

Abstract

paper is to analyze the existing approaches to solve a problem of determining the moment of beginning of slag outcome during steel teeming from a ladle to a tundish. The solution of this problem is considered in two aspects: the first is the choice of the best way to generate a diagnostic signal from the position of the price/quality ratio of its handling, and the second is the development of a method to process this signal in order to obtain useful information. Having made an analytical analysis, in this research a scheme is proposed to receive a signal of vibration acceleration from a sensor installed on a manipulator of a protective tube of a ladle with steel. A sample of a product is developed to arrange that. It provides protection from the influence of industrial disturbances on the sensor. In order to analyze the vibration acceleration signal, the criteria to determine the moment of the beginning of the slag outcome based on entropy energy calculation are developed. This method and a system developed on its basis are tested under industrial conditions for a real object. The only condition for the effective operation of the developed criteria is that from a certain moment the level of steel in the tundish is to be maintained in manual mode to eliminate the disturbances from the movement of the slide shutter used to control the flow of liquid steel. According to the results of experiments under real conditions, it is found that the slide shutter control shutdown is to be performed if the weight of the content of the ladle with steel is from 18 to 19 tons approximately. In this mode of operation, the operator has always been able to found such a rate of steel discharge that the level of steel in the tundish is within the technological requirements. As a result, it is possible to ensure the proposed algorithm triggering for each casting earlier than the operator stops the process manually. At the same time, the amount of steel with slag left in ladle do not exceed 3.8 tons comparing to the moment of the slag cut-off made by the operator.

Keywords

metallurgical industry, steel ladle, slag cut-off, energy entropy, vibration acceleration

About the Author

Dmitry Poleshchenko

СТИ НИТУ МИСиС
Russian Federation

References

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Supplementary files

	1. О РАЗРАБОТКЕ И ПРОМЫШЛЕННОЙ АПРОБАЦИИ СИСТЕМЫ ОТСЕЧКИ ШЛАКА ПРИ РАЗЛИВКЕ СТАЛИ
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	2. О РАЗРАБОТКЕ И ПРОМЫШЛЕННОЙ АПРОБАЦИИ СИСТЕМЫ ОТСЕЧКИ ШЛАКА ПРИ РАЗЛИВКЕ СТАЛИ
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Review

For citations:

Poleshchenko D. ON DEVELOPMENT AND INDUSTRIAL TESTING OF SYSTEM TO CUT-OFF SLAG FOR STEEL CASTING PROCESS. Izvestiya. Ferrous Metallurgy. 2019;62(5).

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ISSN 0368-0797 (Print)
ISSN 2410-2091 (Online)

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	Title	О РАЗРАБОТКЕ И ПРОМЫШЛЕННОЙ АПРОБАЦИИ СИСТЕМЫ ОТСЕЧКИ ШЛАКА ПРИ РАЗЛИВКЕ СТАЛИ
	Creator (or owner) of file	Еременко Ю.И., Полещенко Д.А.
Brief description	Лицензионный договор
	Date	2019-02-12

	Title	О РАЗРАБОТКЕ И ПРОМЫШЛЕННОЙ АПРОБАЦИИ СИСТЕМЫ ОТСЕЧКИ ШЛАКА ПРИ РАЗЛИВКЕ СТАЛИ
	Creator (or owner) of file	Еременко Ю.И., Полещенко Д.А.
Brief description	Лицензионный договор
	Date	2019-02-12

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Izvestiya. Ferrous Metallurgy

ON DEVELOPMENT AND INDUSTRIAL TESTING OF SYSTEM TO CUT-OFF SLAG FOR STEEL CASTING PROCESS

Abstract

Keywords

About the Author

References

Supplementary files

Review

For citations:

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