Simulation of thin strip continuous casting of steels / Simulação do lingotamento continuo de tiras finas de aços

AUTOR(ES)
DATA DE PUBLICAÇÃO

2000

RESUMO

It can be understood by process modeling the development of a quantitative or qualitative representation of the physical phenomena associated to the process. In this work, simulations concerning the twin roll continuous caster of steels process at IPT (Instituto de Pesquisas Tecnológicas do Estado de São Paulo) are performed. Two simulators were developed: (i) a simulator of unidirectional solidification with cooled steel mold and refractory lateral walls, by using a stainless steel as the reference metal (AISI 304), and varying superheat temperatures; (ii) a physical model, with components made of acrylic, water as the simulation fluid and potassium permanganate as a pigment. A previously developed mathematical model has been used to determine the metal/mold heat transfer coefficient by a method that compares experimenta1ltheoretical temperature curves. Measurement of secondary dendrite arm spacings is performed by microestructural examination of the samples, confirming the simulator efficiency in characterizing the solidification process in the pilot equipment. The use of the physical model has permitted to attain the best configuration for the tundish, by positioning the dam 15 cm or 20 cm from the left side of tundish

ASSUNTO(S)

fundição continua calor - transmissão heat transfer metais - processo de solidificação rapida computer simulation aço inoxidavel continuous casting microstructure mathematical models simulação (computadores) stainless steel modelos matematicos microestrutura

ACESSO AO ARTIGO

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