Patent ID: 6659163
Filing Date: 2003-12-09
Classification: B22C,B22D

Abstract:
Method for metal casting in green-sand molds, applicable in machines used for filling sand molds with metals, with the corresponding sealing of a main casting gutter after filling a mold having a top part and a bottom part with molten metal which is fed at the bottom part of the mold, comprising:providing in addition to the main casting gutter a secondary gutter which is vertical and external to mold; communicating said secondary gutter to the top part of mold in which is provided a corresponding feed head for said mold; making one part of the molten metal gradually fill the mold and another part of said molten metal simultaneously rise in the secondary gutter; achieving scaling of the main casting gutter once rho mold is filled with molten metal, with the feeding of the molten metal continuing through the secondary gutter until filling the feed head at the top of the mold.