Title

A REVIEW OF BENCHMARK PERFORMANCE IN PLATE MILL PROCESS CONTROL

AVALIAÇÃO DE PERFORMANCE NO PROCESSO DE CONTROLE DE LAMINADORES DE CHAPA GROSSA

Authorship

Lee, Joseph; Schmidt, Birger; Chalmers, Mark; Berger, Karl

Lee, Joseph

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Schmidt, Birger

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Chalmers, Mark

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Berger, Karl

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DOI

10.5151/2594-5297-20591

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Abstract

The first decade of the 21st Century has seen an explosion in the number of steel plate mills around the world. Significant increases in equipment power, resulting in wider process windows, coupled with through-process modelling of the temperature strain path and microstructural development have been the most obvious and discussed advances. This paper aims to address these recent advances. Just one example of modern technology is SmartCrown® combined with profile and flatness control. This has lead to increased plant throughput and to achieving the target profile more accurately with good flatness of the finished plate. Increased computer power has allowed for more detailed and higher quality process modelling. In addition, introduction of multi-point setup leads to higher resolution: through multi-point setup the complete plate behaviour becomes transparent and process parameters can be driven to a limit. The consequence is improved accuracy of the predictions for temperature, torque, load and several other key rolling parameters, improving performance, as well as permitting complex taper (longitudinally profiled) rolling for weight saving specialist applications. This paper includes comparative results demonstrating the improved performances that can be achieved with these key technologies.

Na primeira decada do novo século notou-se um aumento significativo de laminadores de chapa grossa. Aumento em potencia, abrindo a abrangência de processo, combinado com modelos de processo de temperatura e de desenvolvimento micro-estrutural foram os avanços mais obvious. Este trabalho trata destes advancos onde um exemplo e a technologia de Smart Crown® combinado com controle de perfil e de planicidade na chapa final. Computadores mais avançados permitem estas tarefas de modelamento de processos avançados. Aditional, a introdução de setup multi-point permitiu uma resolução maior: com esta tecnologia o comportamento da chapa se virou transparente e os parâmetros se aproximaram aos limites. A consequencia foi a predição de temperatura, torque, forca de laminação e outros parâmetros chaves, melhorando performance, e permitindo geometrias complexas (taper - perfil longitudinal) para aplicações especiais. Este trabalho inclui resultados comparativos demonstrando a performance alcançada com esta tecnologia.

Keywords

Plate mill; Profile control; Taper rolling.

Laminador de chapa grossa; Controle de perfil; Laminação de taper.