Hybrid Method of Vibration Acceleration Signal Analysis for Solving the Problem of Early Slag Recognition During Steel Casting

The paper considers the problem of early recognition of slag of steel casting ladle of continuous casting machine during steel pouring. In this paper, the vibration method of slag recognition was investigated, as it is the most informative. In order to cut off slag in time and prevent it from getting into the intermediate ladle, a hybrid method of analyzing the vibration acceleration signal of the protective tube manipulator was tested. It is based on sequential application of singular spectral analysis of the initial signal and calculation of power spectral density of the carrier component of singular decomposition, on the basis of which the moment of slag ingress into the intermediate ladle was determined. Analysis of the test results of this method showed that it allowed to exclude the influence of interference created by the gate movement on the quality of slag cutoff criteria operation.