Simulation of the Deformation of a Continuously Cast Ingot Depending on the Parameters of Mold Flux

• Published in: Metallurgist (New York) Vol. 61; no. 11-12; pp. 934 - 942
• Main Authors: Gusev, M. P., Zarubin, S. V., Longinov, A. M., Anisimov, K. N.
• Format: Journal Article
• Language: English
• Published: New York Springer US 01.03.2018; Springer; Springer Nature B.V
• Subjects: Analysis; Casting (Metal); Characterization and Evaluation of Materials; Chemistry and Materials Science; Computer simulation; Conduction heating; Conductive heat transfer; Continuous casting; Crack initiation; Cracks; Creep (materials); Deformation; Heat flux; Heat transfer; Ingot casting; Ingots; Integrals; Materials Science; Mathematical models; Metallic Materials; Mold fluxes; Numerical analysis; Process parameters; Skin; Steel; Thermal properties; Thermocouples; Thermodynamic properties; Transient heat conduction; stress-strain state of the ingot; mold flux; transverse cracks; surface defects; limiting state; mold; continuous casting of steel
• ISSN: 0026-0894; 1573-8892
• DOI: 10.1007/s11015-018-0589-y

We propose a mathematical model of the strained state of steel skin, which enables one to evaluate the initiation of transverse cracks in the ingots. The mathematical model is based on the equations of transient heat conduction, relations between the creep strains and stresses in the steel skin, and the integral balance equations. In our calculations, we use industrial data on the thermal work of the mold: the data of thermocouples mounted in the walls of the mold and the integral heat flux computed according to difference between the temperature of water at the inlet and outlet of the mold. The proposed mathematical model takes into account the thermal properties of mold fluxes, their influence on friction between the ingot and the mold, and the creep properties of cast steels as well as establishes the relationship between the parameters of the process of continuous casting and the appearance of transverse cracks in the steel skin. The results of numerical analysis of the limiting state of steel skin are in good agreement with the industrial data on the initiation of transverse cracks in the ingot.