HIGH TOUGHNESS, 510 MPA STRENGTH CLASS MICROALLOYED STEEL PLATES WITH PRODUCED BY T.M.C.P. IN GERDAU OURO BRANCO
PRODUÇÃO DE CHAPAS GROSSAS DA CLASSE DE 510 MPA E ALTA TENACIDADE, PRODUZIDAS ATRAVÉS DE TRATAMENTO TERMOMECÂNICO DE AÇO MICROLIGADO, NA GERDAU OURO BRANCO
Romeu Thomaz Viana Júnior, José Herbert Dolabela da Silveira, Rafael Abreu Fraga, Afonso Cardoso da Silva, Mateus Pedro Medeiros da Silva, Emanuelle Garcia Reis, Ricardo José de Faria
Abstract
The Gerdau Ouro Branco Works has started to develop high complexity products three years after the implementation of its new heavy plate rolling mill. The evolution of its learning curve is increasingly challenging since products are being developed to their highest grades. This paper aims to present the first results of the development of steels of the strength class of 510 MPa produced by TMCP (Thermomechanical Controlled Processing). These results show the potential and advantages of the accelerated cooling process after rolling for the production of steel plates with high mechanical strength and high toughness, associated with a low equivalent carbon.
Keywords
Resumo
A usina Ouro Branco da Gerdau iniciou o desenvolvimento de produtos com alta complexidade três anos depois da implementação de seu novo laminador de chapas grossas. A evolução de sua curva de aprendizado é cada vez mais desafiadora, uma vez que estão sendo fabricados produtos com especificações extremas. Este trabalho apresenta os primeiros resultados do desenvolvimento de chapas grossas da classe de 510 MPa produzidos por laminação controlada seguida de resfriamento acelerado. Eles mostram o potencial e as vantagens decorrentes do uso deste processo na produção de aços com alta resistência mecânica e alta tenacidade, cuja composição química apresenta baixos valores de carbono equivalente.
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Referências
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Submetido em:
28/11/2019
Aceito em:
14/12/2019
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