Theoretical and experimental analysis of
continuous casting with soft-contacted mould①
continuous casting with soft-contacted mould①
(School of Materials, Shanghai University, Shanghai200072, P.R.China)
Abstract: Coupling the quasi-3D numerical simulation of electromagnetic field and the experiments with some metal such as tin, aluminum, copper and steel, the electromagnetic characteristics of continuous casting with soft-contacted mould, especially the influences of power frequency, the mould structure, and the inductor position, size and current on the electromagnetic force and pressure on the billet, were analyzed. The result shows that, in continuous casting with
soft-contacted mould, the electromagnetic pressure on the surface of billet increases with the rising of the power frequency as a logarithmically parabolic function and, with that of inductor current as a parabolic function. The design principle of the soft-contacted mould is that 1) the mould structure should be‘more segments and thin slits’; 2) the topside of inductor should be at the same location with the meniscus of molten metal; 3) the inductor should cover the initial solidifying shell of billet.
soft-contacted mould, the electromagnetic pressure on the surface of billet increases with the rising of the power frequency as a logarithmically parabolic function and, with that of inductor current as a parabolic function. The design principle of the soft-contacted mould is that 1) the mould structure should be‘more segments and thin slits’; 2) the topside of inductor should be at the same location with the meniscus of molten metal; 3) the inductor should cover the initial solidifying shell of billet.
Key words: continuous casting; numerical simulation; soft-contacted mould