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The present work is focused on the development of a real-time monitoring system and an optimization algorithm\udof the wear of submerged entry nozzles (SEN) of continuous slab casters. The real-time monitoring system was developed\udin order to inform the operator about the actual state of SEN wear during casting in order to avoid primarily the risk of\udan excessive use and a breakage of the SEN. This kind of incident always entails a considerable danger for the operators\udwhile removing the broken parts out of the mould and a risk of a breakout due to an entrapment of refractory parts in\udthe strand too. The parameters of the mathematical model were adjusted by collecting process data and measuring the\udwear of various nozzles utilized at different casting conditions. Additionally, a wear optimization algorithm was developed\udfor controlling the immersion depth of the SEN in order to maximize the usage time even it was already used at a\udconstant immersion depth for some time. With the implementation of these two systems, not only the usage time of the\udsubmerged entry nozzles could be enhanced significantly, but also, at the same time, the operator and process safety

SISTEMA DE MONITORAMENTO E OTIMIZAÇÃO DO DESGASTE DOS TUBOS SUBMERSOS DE MÁQUINAS DE LINGOTAMENTO CONTÍNUO EM TEMPO REAL