METHOD AND DEVICE FOR PRODUCING CASTING MOLD OR PART THEREOF BY BLOWING GRANULAR MATERIAL INTO MOLDING INTERIOR

摘要

PURPOSE: To make it possible to fill a mold chamber with a molding material regardless of the size and/or shape of the mold chamber without the need for maintaining the apparatus necessary for molding in a working state for a longer than absolutely necessary. CONSTITUTION: The blowing work is ended at the point of the time the pressure PMC in the mold chamber passes the maximum PMAX in the method and apparatus for manufacturing the mold or mold parts in such a manner that the work for blowing the molding material into the mold chamber is ended at the point of the time which is the function of the pressure in the mold chamber.