ISSN 2594-5327
56º Congresso anual — Vol. 56 , num. 1 (2001)
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The materials science is an important tool for the comprehension of the processes happening at the slab-mould interface and for the explanation and solution of problems occurring during the continuous casting (CC). The materials generated at this interface are responsible for lubrication and heat transfer through the slag film. The most frequent contaminants on the mould slags - MgO, CaO, Al₂O₃, ZrO₂ and TiO₂ - come from covering materials, slags, refractory materials and active additions, and may change the mould flux slags properties. The fluorine vaporization is also an important aspect to be considered. The determination of T_solidification, T_crystallization (crystallization tendency of the mould flux powders and slags), T_fluidity (vaporization and contaminants influence) play a very important role in this study. The objective of this study was to characterize mould flux powders and slags and evaluate the changes of the performance parameters related to the slab-mould interface. The confirmation of the influence of chemical changes on the mould slags properties, are the driving power for the development of new and intelligent products, able to minimize the modification of the properties, of the mould slags. DTA, Heating Microscopy, Emission Spectrometry and XRD were used in this study.
The materials science is an important tool for the comprehension of the processes happening at the slab-mould interface and for the explanation and solution of problems occurring during the continuous casting (CC). The materials generated at this interface are responsible for lubrication and heat transfer through the slag film. The most frequent contaminants on the mould slags - MgO, CaO, Al₂O₃, ZrO₂ and TiO₂ - come from covering materials, slags, refractory materials and active additions, and may change the mould flux slags properties. The fluorine vaporization is also an important aspect to be considered. The determination of T_solidification, T_crystallization (crystallization tendency of the mould flux powders and slags), T_fluidity (vaporization and contaminants influence) play a very important role in this study. The objective of this study was to characterize mould flux powders and slags and evaluate the changes of the performance parameters related to the slab-mould interface. The confirmation of the influence of chemical changes on the mould slags properties, are the driving power for the development of new and intelligent products, able to minimize the modification of the properties, of the mould slags. DTA, Heating Microscopy, Emission Spectrometry and XRD were used in this study.
Palavras-chave
mould powder, mould slags, continuous casting
mould powder, mould slags, continuous casting
Como citar
Fonseca, Marcus Vinícius de Araujo; Oliveira, Cristiano Honório de; Perruso, Carlos Renato; Perlm, Carlos Alberto; Nascimento, Altemar.
CHARACTERIZATION AND CHANGES EVALUATION OF MOULD POWDER SLAGS FROM CONTINUOUS CASTING (CC) MOULD.,
p. 1114-1124.
In: 56º Congresso anual,
Belo Horizonte, Brasil,
2001.
ISSN: 2594-5327, DOI 10.5151/2594-5327-C01189
