CASTING METHOD OF COMPOSITE INGOT Russian patent published in 2009 - IPC B22D11/00 

FIELD: metallurgy.

SUBSTANCE: invention relates to foundry field. Molten metal is filled through loading end of open ring-shaped form of casting mold and it is extracted hardened ingot from discharge end of casting mold. Mold contains division walls for separation of its charge end for at least two separate feed chambers. Edges of division walls are located higher the discharge end of casting mold. Flow of the first alloy is fed into one of pairs of feeding chambers with formation of the first metal in the first chamber and the stream of the second melt is fed into the other feeding chamber with formation of bath of the second metal in the second chamber. Bath of the initial metal is cooled by means of contact with division wall between the first chamber with formation of self-sustained surface, adjoined to division wall. Top surface of the bath of the second alloy is located more than for 3 mm higher the bottom edge of division wall or it is lead to the contact with self-sustained surface of the first alloy bath in the point, where the temperature of self-sustained surface is located between temperatures solidus and liquidus of the first alloy. Two baths of alloy are connected in the form of two layers with formation of composite metallic ingot.

EFFECT: it is achieved hardening of joining of composite ingot layers.

77 cl, 1 tbl, 20 dwg