Title

CUSTOMIZATION OF THE COLD ROLLED STEEL MANUFACTURING PROCESS FOR THE DRUMS INDUSTRY

CUSTOMIZATION OF THE COLD ROLLED STEEL MANUFACTURING PROCESS FOR THE DRUMS INDUSTRY

Authorship

SOUZA, CAROLINA DAMASCENO DE; ARAÚJO, FABIO DE OLIVEIRA; SANTOS, RAFAEL MASULCK; LEITE, SABRINA RESTIER DA COSTA RODRIGUES; CARVALHO, LIDIANE DA PAIXAO; CUNHA, RAPHAEL ALEXSANDER RIBEIRO DA; VENTURA, HARISON DA SILVA; VENTURA, HARISON DA SILVA

SOUZA, CAROLINA DAMASCENO DE

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ARAÚJO, FABIO DE OLIVEIRA

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SANTOS, RAFAEL MASULCK

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LEITE, SABRINA RESTIER DA COSTA RODRIGUES

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CARVALHO, LIDIANE DA PAIXAO

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CUNHA, RAPHAEL ALEXSANDER RIBEIRO DA

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VENTURA, HARISON DA SILVA

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VENTURA, HARISON DA SILVA

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DOI

10.5151/2594-5297-41616

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Abstract

This work was developed with the aim of reducing the transformation cost of cold-rolled products intended for the drum industry, specifically for use in "drum bodies," while maintaining the hardness range of the product delivered to customers. For this purpose, the CSN TBR 60 specification is used. The goals were to reduce natural gas consumption, increase productivity on the Continuous Annealing Line, and replace the steel grade with a lower-cost alternative. Industrial-scale tests were conducted, initially modifying the finishing temperature during hot rolling to reduce natural gas consumption and evaluate the product's hardness. In the second test, both the finishing temperature and thermal cycle were altered, also aiming to preserve hardness. Finally, in the third test, in addition to modifying the finishing temperature and thermal cycle, the steel grade was changed to a lower-cost one. Despite the cost reduction, the average hardness obtained in tests 1 and 2 was not satisfactory. However, in test 3, besides reducing the transformation cost, the average hardness was within the expected range. It can be concluded that test 3 not only provided the best hardness performance but also resulted in the lowest total transformation cost.

This work was developed with the aim of reducing the transformation cost of cold-rolled products intended for the drum industry, specifically for use in "drum bodies," while maintaining the hardness range of the product delivered to customers. For this purpose, the CSN TBR 60 specification is used. The goals were to reduce natural gas consumption, increase productivity on the Continuous Annealing Line, and replace the steel grade with a lower-cost alternative. Industrial-scale tests were conducted, initially modifying the finishing temperature during hot rolling to reduce natural gas consumption and evaluate the product's hardness. In the second test, both the finishing temperature and thermal cycle were altered, also aiming to preserve hardness. Finally, in the third test, in addition to modifying the finishing temperature and thermal cycle, the steel grade was changed to a lower-cost one. Despite the cost reduction, the average hardness obtained in tests 1 and 2 was not satisfactory. However, in test 3, besides reducing the transformation cost, the average hardness was within the expected range. It can be concluded that test 3 not only provided the best hardness performance but also resulted in the lowest total transformation cost.

Keywords

Cold-Rolled; Finishing Temperature; Thermal Cycle; Drums.

Cold-Rolled; Finishing Temperature; Thermal Cycle; Drums.