| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a molten metal-pouring method for precisely falling molten metal flowing out of a ladle into the sprue of a mold. <P>SOLUTION: In the molten metal-pouring method for controlling the input voltage to be applied to a servo motor for tilting the ladle so as to precisely drop the molten metal flowing out of the ladle into the sprue of a mold, a servo motor for longitudinally moving the ladle, and a servo motor for vertically moving the ladle by using a computer, a mathematical model of the falling path of the molten metal flowing out of the ladle is created; the falling position of the molten metal is estimated by means of a pouring velocity estimation unit and a falling position estimation unit by solving the inverse model of the created mathematical model and considering the effect of the contracted flow; and the falling position data are processed by the computer, thereby obtaining the input voltages to the servo motor for tilting the ladle, the servo motor for longitudinally moving the ladle, and the servo motor for vertically moving the ladle. The three servo motors are controlled in accordance with the obtained input voltages. <P>COPYRIGHT: (C)2012,JPO&INPIT |
