METHOD FOR AUTOMATICALLY POURING MOLTEN METAL BY TILTING A LADLE AND A MEDIUM FOR RECORDING PROGRAMS FOR CONTROLLING A TILT OF A LADLE

摘要

The purpose of the present invention is to provide a method for accurately dropping molten metal that flows from a ladle into a pouring gate in a mold. The present invention includes a method for controlling the respective input voltages transmitted to a servomotor that tilts the ladle such that the molten metal that flows from the ladle drops accurately into the pouring gate in the mold, a servomotor that moves the ladle back and forth, and a servomotor that moves the ladle up and down, by using a computer. In the method, a mathematical model of the area on which the molten metal that flows from the ladle will drop is produced, and then the inverse problem of the produced mathematical model is solved. In view of the effect of a contracted flow, the position on which molten metal drops is estimated by the estimating device for estimating the pouring rate and the estimating device for estimating the position on which molten metal will drop. Then the estimated position is calculated by a computer. Thereby the respective input voltages transmitted to the servomotor that tilts the ladle, the servomotor that moves the ladle back and forth, and the servomotor that moves the ladle up and down, are obtained. Then the three respective servomotors are controlled based on the obtained input voltages.