Apparatus for casting metals and other materials under pressure
AssigneeNPO "Technologia Na Metalite"
InventorsIvan D. Nikolov, Iliya G. Chorbov, Ivan M. Peychev
Life of this patent
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Abstract
An apparatus for the casting of metals and other materials under pressure in which the molten metal is introduced into a cylinder which is pressurized by a piston through an intervening pneumatic cushion to drive the molten metal into the mold. When the mold is filled with the metal, the piston increases the pressure further so as to maintain the pressure during solidification. Advantageously, the cylinder from which the molten metal is driven, is connected by a further cylinder to a hot chamber in which the melt is prepared, the connection between the two cylinders being at the bottom thereof and the entire assembly being mounted on a tiltable frame.
Claims4
An apparatus for casting a molten material under pressure, comprising:
- a support structure receiving a casting mold;
- a movable frame pivotally connected to said support structure for tilting movement toward and away from said mold;
- a melt-displacing assembly mounted on said frame, said assembling comprising hot chamber means including:
- a large chamber, formed in said hot chamber means, having generally upright side walls in a position of said assembly proximal to said mold;
- a relatively small chamber, formed in said hot chamber means adjacent said large chamber, having upright side walls in a position of said assembly proximal to said mold;
- said small chamber being in fluid communication with said large chamber by means of a melt communication passage formed in said hot chamber means at a lower end of each chamber;
- said small chamber having an opening at an upper end thereof;
- a displaceable cover for sealing said opening of said small chamber of said hot chamber means;
- pressurizable means associated with said frame for displacing said cover to seal the small chamber opening of said hot chamber means;
- means forming a cylinder communicating with said large chamber of said hot chamber means;
- gas supply means, associated with the large chamber of said hot chamber means, for supplying gas to said large chamber;
- a piston being reciprocatable in said cylinder to compress said gas and drive molten metal from said large chamber;
- a pressing unit mounted on said frame and associated with said piston for displacing said piston in said cylinder;
- and
- a metal-conducting conduit associated with said hot chamber means for connecting said large chamber with said mold in the position of said assembly proximal to said mold.
Dependencies are inferred from the claim text.