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: 114
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: 2025
: .., .. // . - 2025. - . 114. - .273-290.
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(.): continuous steel casting, power spectrum envelope, melting weight signal, discrete wavelet analysis, slag cutoff criteria
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(.): Currently, one of the key tasks in industry is to ensure high production efficiency, also in the steel industry. One of the unsolved problems in this area in the process of continuous casting of steel is the determination of the moment when slag begins to enter the intermediate ladle when pouring metal from the ladle. A comparative analysis of methods of early slag detection shows that currently there is no highly effective slag cut-off system. In this paper, in order to solve the problem of early slag detection, the vibration method was used due to the high informativeness of the vibration acceleration signal. Two methods of analyzing the vibration acceleration signal of the protective tube manipulator were tested for timely slag cutoff and preventing its entering into the intermediate ladle. Analysis of the results of testing showed that the best efficiency, equal to one hundred percent, was provided by the approach based on the analysis of the power spectrum of the vibration acceleration signal together with the data on the weight of the melting. Slag cutoff criteria based on discrete wavelet analysis worked in 67 percent of cases, which demonstrates their performance and gives grounds for more thorough research of this method in order to increase its efficiency.
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