Modeling and In-Plant Evaluation of Thermal Stresses in Steelmaking Ladles

Pablo Galliano; Leandro Martorello; Leonardo Musante; Tomás Simaro; Miguel Rossi; Hugo Ernst; Daniel Johnson

doi:10.4028/www.scientific.net/AST.92.310

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Modeling and In-Plant Evaluation of Thermal Stresses in Steelmaking Ladles
p.310

HomeAdvances in Science and TechnologyAdvances in Science and Technology Vol. 92Modeling and In-Plant Evaluation of Thermal...

Modeling and In-Plant Evaluation of Thermal Stresses in Steelmaking Ladles

Abstract:

A thermo-mechanical finite element model was developed by using FEA commercial software, in order to estimate thermal stress levels in a refractory lined steelmaking ladle shell during its first preheating stage. The model considers two refractory linings: an inner working lining and a permanent one besides the external ladle shell. In this way, stresses on both refractory lining and metallic shell due to restricted lining thermal expansion were simulated. Stress-strain curves of refractory lining materials at different temperatures were obtained through lab tests and then used for model optimization. Additionally, creep behavior in the steel shell under different tensile stresses and temperatures was also estimated taking into account previously obtained results from laboratory tests. In plant strain and temperature measurements were done by instrumenting the lower part of the ladle sidewall shell with high temperature strain gauges and thermocouples. Predicted stress evolution showed good agreement with results obtained from in plant measurements.

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Periodical:

Advances in Science and Technology (Volume 92)

Pages:

310-318

DOI:

https://doi.org/10.4028/www.scientific.net/AST.92.310

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Online since:

October 2014

Authors:

Pablo Galliano*, Leandro Martorello, Leonardo Musante, Tomás Simaro, Miguel Rossi, Hugo Ernst, Daniel Johnson

Keywords:

Ladle, Lining, Model, Steelmaking, Stress, Thermal

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