Título

OPTIMIZATION OF THE STORAGE PROCESS OF STEEL COILS APPLIED TO THE STORAGE YARD OF HOT STRIP MILL

OPTIMIZATION OF THE STORAGE PROCESS OF STEEL COILS APPLIED TO THE STORAGE YARD OF HOT STRIP MILL

Autoria

Saião, Joyce Alexsandra Oliveira S.; Mendes, Waldenir da Silva; Novelli, Luciano Alves; Junior, Willy Schuwarten

DOI

10.5151/2594-5297-32364

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Resumo

This study, which was applied in the coil storage yard of the Hot Rolling Mill area, aimed at optimizing the process of making decisions of the operator during transport and storage of steel coils. The coil storage yard is a strategic area that, besides storage, has the function of sending the coils directly to the customer, and it also monitors the temperature, so that part of the coils is sent to the Temper Mill. These coils arrive in the patio with temperatures up to 600ºC. The ideal temperature for the rolling process in the Temper Mill is 80°C. This patio has the capacity to store 650 coils on two levels. According to the initial project, the crane operators inside the operating cabins should receive information only from where they should stock each coil. The decision to release the coil is from the floor controllers. Those are responsible for measuring the temperature of each coil, making the decision and communicating by radio to the crane operator. This measurement used to be done through a portable optical pyrometer. In order to optimize this process, a portable thermographic camera was acquired. Knowing the temperatures of coils stored in certain regions, the controller can quickly define the best place for cooling. The images of the thermographic camera will be transmitted to the tablet of the controllers, allowing its rapid analysis due to the possibility of checking a larger number of coils in each measurement. Through the new form of measurement, it is now possible to speed up this process, increase the level of precision during the activity, guarantee the process parameters and, more importantly, reduce the exposure of the floor controllers near the coils at high temperatures, which makes the activity safer.

 

This study, which was applied in the coil storage yard of the Hot Rolling Mill area, aimed at optimizing the process of making decisions of the operator during transport and storage of steel coils. The coil storage yard is a strategic area that, besides storage, has the function of sending the coils directly to the customer, and it also monitors the temperature, so that part of the coils is sent to the Temper Mill. These coils arrive in the patio with temperatures up to 600ºC. The ideal temperature for the rolling process in the Temper Mill is 80°C. This patio has the capacity to store 650 coils on two levels. According to the initial project, the crane operators inside the operating cabins should receive information only from where they should stock each coil. The decision to release the coil is from the floor controllers. Those are responsible for measuring the temperature of each coil, making the decision and communicating by radio to the crane operator. This measurement used to be done through a portable optical pyrometer. In order to optimize this process, a portable thermographic camera was acquired. Knowing the temperatures of coils stored in certain regions, the controller can quickly define the best place for cooling. The images of the thermographic camera will be transmitted to the tablet of the controllers, allowing its rapid analysis due to the possibility of checking a larger number of coils in each measurement. Through the new form of measurement, it is now possible to speed up this process, increase the level of precision during the activity, guarantee the process parameters and, more importantly, reduce the exposure of the floor controllers near the coils at high temperatures, which makes the activity safer.

Palavras-chave

Storage yard, Steel coils, thermographic camera, hot strip mill.

Storage yard, Steel coils, thermographic camera, hot strip mill.