METHOD AND DEVICE FOR POURING MOLTEN METAL IN VACUUM MOLDING AND CASTING

摘要

A method and a device for pouring a molten metal in a vacuum molding for casting a thin-walled casting by using a V-process casting mold (molding frame body) and a casting cast by the method, the method comprising the steps of:sealingly covering the surface of a pattern plate by a shielding member;placing a mold framing on the shielding member and then putting a fill that does not include any binder in the mold framing;sealingly covering an upper surface of the fill and then evacuating an inside of the mold framing to suck the shielding member to the fill to shape the shielding member;removing the pattern plate from the shielding member, thereby forming a mold half that has a molding surface;forming another mold half in a similar way and mating the mold halves to define a molding cavity;depressurizing the inside of the molding cavity;pouring molten metal in the molding cavity;depressurizing the inside of the molding to cast a casting.