Publication | Open Access
The Role of Mould Fluxes in Continuous Casting-So Simple Yet So Complex
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2003
Year
Tribological CoatingEngineeringCastingFluid MechanicsMechanical EngineeringHorizontal Heat FluxMolding (Process)RheologySolidification DefectsMaterials ScienceHydrodynamic LubricationPiston-ring LubricationMultiphase FlowHeat TransferTribological Property3D PrintingMicrostructureMicrofabricationMetallurgical ProcessSlag FilmMould FluxesThermal Engineering
Mould fluxes normally provide lubrication and horizontal heat flux based on viscosity, break temperature, and crystalline fraction, but their behavior becomes complex when addressing turbulent metal flow issues such as slag entrapment. Recent developments aim to mitigate turbulent metal flow problems, allowing fluxes to focus on lubrication and heat flux. The relevant parameters are calculated from mould dimensions, casting conditions, and steel grade.
The performance of mould fluxes in providing the optimum levels of lubrication and horizontal heat flux is relatively simple since they rely on only three properties, the viscosity and break temperature of the flux and the crystalline fraction developed in the slag film. These parameters can be readily calculated according to the mould dimensions, casting conditions and steel grade. It is only when the flux is used to combat other problems, such as those arising from turbulent metal flow (e.g. slag entrapment) that flux behaviour becomes complex and more difficult to understand. Some recent developments may help to combat problems associated with turbulent metal flow and free the flux to carry out its principal duties of providing optimum lubrication and horizontal heat flux.