MOLD OSCILLATING METHOD IN CONTINUOUS CASTING

摘要

PURPOSE:To cast continuously and stably an ingot under the oscillation of a casting mold at the high oscillation frequency below the natural oscillation frequency of a beam by specifying the oscillation frequency of the casting mold as well as the negative strip time rate of the oscillating speed of the casting mold and the drawing speed of the ingot. CONSTITUTION:The excitation frequency of the casting mold 4 is set within the range between the oscillation frequency of 2/3 the natural oscillation frequency of the beam 2 and 5Hz by averting the resonance region existing in said range in the method for oscillating the casting mold. The negative strip time rate of the oscillating speed of the casting mold and the drawing speed of the ingot is set within the range between 50% and 85%. The defectless ingot is thus obtd.