Modeling and Identification of Pouring Flow Process With Tilting-Type Ladle for an Innovative Press Casting Method Using Greensand Mold

摘要

Recently, a new method of a press casting using greensand mold was proposed by our group as a means of ferrous casting. This method has advantages in terms of energy savings and cost because a sprue cup and runner channel are not needed. Still, it is important to pour accurately and quickly in this method. Therefore, a feedforward outflow control is presented by using a mathematical model and inverse dynamics. The outflow is measured by a loadcell under the ladle. However, the loadcell data has a large uncertainty that is caused by the tilting motion. Therefore, a compensation for the loadcell is proposed. The determination of the back-tilting time is optimized by a dichotomy method. Finally, the effectiveness of the proposed system is shown through simulation and experiment.