DEVICE AND METHOD OF VACUUM CASTING.

摘要

A method of vacuum casting, wherein pressure in the cavity of a mold is reduced beforehand, molten metal is temporarily stored in the molten metal reservoir and, under such conditions as above, a gate having blocked the cavity from the molten metal reservoir is opened so that molten metal may be sucked into the cavity to be cast, in which gas and/or foreign matters are effectively prevented from being dragged and sucked into the cavity. For the above-said pulse, a space is provided in the molten metal reservoir for containing gas or other foreign matters. Furthermore, the space is positioned where none of the contents can be sucked into the cavity.