Two-dimensional thermomechanical analysis of continuous casting process

Janik, M.; Dyja, H.; Berski, S.; Banaszek, G.

doi:10.1016/j.jmatprotec.2004.04.129

Cited by 50 publications

(27 citation statements)

References 7 publications

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“…Simulating the multi-physics phenomena, (i.e. fluid flow, solidification, heat transfer and structure mechanics) during casting has been attempted in previous works [8,[14][15][16]. However, it lacks a detailed treatment of the slag phase in the calculations which is critical for the CC process.…”

Section: Discussion and Limitationsmentioning

confidence: 99%

One-Way Coupling of an Advanced CFD Multi-Physics Model to FEA for Predicting Stress-Strain in the Solidifying Shell during Continuous Casting of Steel

Svensson¹,

López²,

Jalali³

et al. 2015

IOP Conf. Ser.: Mater. Sci. Eng.

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Abstract. One of the main targets for Continuous Casting (CC) modelling is the actual prediction of defects during transient events. However, the majority of CC models are based on a statistical approach towards flow and powder performance, which is unable to capture the subtleties of small variations in casting conditions during real industrial operation or the combined effects of such changes leading eventually to defects. An advanced Computational Fluid Dynamics (CFD) model; which accounts for transient changes on lubrication during casting due to turbulent flow dynamics and mould oscillation has been presented on MCWASP XIV (Austria) to address these issues. The model has been successfully applied to the industrial environment to tackle typical problems such as lack of lubrication or unstable flows. However, a direct application to cracking had proven elusive. The present paper describes how results from this advanced CFD-CC model have been successfully coupled to structural Finite Element Analysis (FEA) for prediction of stress-strains as a function of irregular lubrication conditions in the mould. The main challenge for coupling was the extraction of the solidified shell from CFD calculations (carried out with a hybrid structured mesh) and creating a geometry by using iso-surfaces, re-meshing and mapping loads (e.g. temperature, pressure and external body forces), which served as input to mechanical stress-strain calculations. Preliminary results for CC of slabs show that the temperature distribution within the shell causes shrinkage and thermal deformation; which are in turn, the main source of stress. Results also show reasonable stress levels of 10-20 MPa in regions, where the shell is thin and exposed to large temperature gradients. Finally, predictions are in good agreement with prior works where stresses indicate compression at the slab surface, while tension is observed at the interior; generating a characteristic stress-strain state during solidification in CC.

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Section: Discussion and Limitationsmentioning

confidence: 99%

One-Way Coupling of an Advanced CFD Multi-Physics Model to FEA for Predicting Stress-Strain in the Solidifying Shell during Continuous Casting of Steel

Svensson¹,

López²,

Jalali³

et al. 2015

IOP Conf. Ser.: Mater. Sci. Eng.

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show abstract

“…Janik et al 5) used a finite-element method to investigate the thermo-mechanical behavior of a steel billet in a continuous casting mold. Liu et al 6) developed a three-dimensional finite-element model to predict the stress and distortion of the mold under different conditions, and analyzed in detail the effect of copper plate parameters on the distributions of temperature and distortion.…”

Section: Investigation On Thermo-mechanical Behavior Of Mold Corner Fmentioning

confidence: 99%

Investigation on Thermo-mechanical Behavior of Mold Corner for Continuous Casting Slab

Wang

Shanjiao

et al. 2015

ISIJ International

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“…18) ...... (14) ...... (15) ..... (16) ..... (17) at tϭ0 The local heat flux density in Eqs. (16) and (17) is calculated by the Schwerdtfeger's law 20) as follows: The exponent a is the slope of the straight lines in q-z halflogarithmic plot and its value is almost 1.5 m…”

Section: Numerical Simulation Of Solidificationmentioning

confidence: 99%

A New Semi-analytical Model for Prediction of the Strand Surface Temperature in the Continuous Casting of Steel in the Mold Region

2008

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In this research, a new semi-analytical model is presented for the strand surface temperature in the continuous casting of steel. Firstly with a dimensional analysis approach a general relation between the strand surface temperature and the other effective variables such as conductivity of the steel, pouring temperature, casting velocity, distance from the meniscus, volume rate of cooling water, solidus temperature and heat flux density at the meniscus is deduced. The constants appeared as coefficients or powers of variables in presented relation were computed by a numerical simulation of continuous casting for a breakout bloom. The resulted semi-analytical model for strand surface temperature was extended to predict the solidified shell thickness. The resulted semi-analytical model was validated with comparison to experimental, analytical and numerical results of slab, billet and bloom and good agreement was seen. The new presented model at this research is in versus of controllable parameters and specifications of the mold and it can be used for design of a process control system for continuous casting of slab, billet and bloom.

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Two-dimensional thermomechanical analysis of continuous casting process

Cited by 50 publications

References 7 publications

One-Way Coupling of an Advanced CFD Multi-Physics Model to FEA for Predicting Stress-Strain in the Solidifying Shell during Continuous Casting of Steel

One-Way Coupling of an Advanced CFD Multi-Physics Model to FEA for Predicting Stress-Strain in the Solidifying Shell during Continuous Casting of Steel

Investigation on Thermo-mechanical Behavior of Mold Corner for Continuous Casting Slab

A New Semi-analytical Model for Prediction of the Strand Surface Temperature in the Continuous Casting of Steel in the Mold Region

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