Detection of roller damage and/or misalignment in continuous...

B - Operations – Transporting – 22 – D

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B22D 11/20 (2006.01) B22D 11/16 (2006.01)

Patent

CA 2406683

A method for detecting roller irregularities during on-line continuous casting of a metal comprises; i) continuously monitoring the changes in the mould level over time; ii) identifying large periodic influences affecting the mould level versus time function and their frequency, iii) comparing the frequency of the periodic influences of step ii) with predicted frequency harmonics based on a normal operation of the casting process and highlighting by comparison of the predicted and actual frequencies characteristics indicative of irregularities in roller behaviour.

Ce procédé de détection d'un comportement irrégulier de rouleaux, lors d'une coulée en continue d'un métal, comprend les étapes suivantes consistant: i) à surveiller en continu les changements se produisant, sur une certaine période, dans le niveau du moule, ii) à identifier des influences importantes périodiques affectant le niveau du moule par rapport à la fonction temps, ainsi que la fréquence de ces influences, iii) à comparer la fréquence des influences périodiques de l'étape ii) avec des harmoniques de fréquences prédites, calculées en fonction d'un déroulement normal du processus de coulage, et à mettre en évidence les caractéristiques indiquant des irrégularités dans le comportement des rouleaux, en comparant les fréquences prédites avec les fréquences actuelles. .

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