| 摘要 |
<P>PROBLEM TO BE SOLVED: To solve a problem that mold-derived gas generated by reaction between a plaster-based material and a molten base metal during casting remains within the molten base metal and is not discharged to outside. <P>SOLUTION: The pressure casting device including a control device performs control to pressurize a dissolution chamber when the molten base metal is poured into a mold, maintain inside of the dissolution chamber at constant pressure only for a predetermined time when sensed pressure by a pressure sensor reaches predetermined pressure and, after passage of the predetermined, further pressurize the dissolution chamber from the constant pressure. <P>COPYRIGHT: (C)2012,JPO&INPIT |
