2000 Volume 86 Issue 7 Pages 446-451
The penetration of a mold flux between a mold and a molten metal which is driven by a mechanical mold oscillation is indispensable for a continuous casting of steel. In this paper a new continuous casting process in which the function of mold oscillation is replaced by an electromagnetic force has been proposed. The basic parameters in the new process were evaluated in a model experimental work using a molten gallium and the penetration behavior of a mold flux was visualized by use of a high-speed video camera. The non-contacting distance caused at meniscus by the electromagnetic force and the consumption of the mold flux in a continuous casting of a molten tin were measured. It is found that the non-contacting distance which is formed by imposing an intermittent alternating magnetic field under no mechanical mold oscillation nearly agrees with the minimum stroke length of the mold oscillation which is required for the success of the continuous casting of a molten tin. Surface quality of cast billets was improved by increasing the consumption of the mold flux and by adjusting the intermittent frequency of the magnetic field to the optimum one existing near the intrinsic frequency of a molten pool.
