Abstract: Method of and apparatus for casting under pressure light metal alloys in which, under the action of a pressure difference, the molten metal from a furnace, disposed in a hermetically sealed chamber, is displaced via a feed tube for molten metal and fills the cavity of a casting mold, disposed in another hermetically sealed chamber, wherein before the filling of the cavity of the casting mold with molten metal, the latter is subjected to a temperature and a metallurgical pretreatment in two furnaces, which are then in succession brought in position of casting and, at the same time or later, the casting mold is brought to desired temperature parameters, the process of casting is performed, the cast body is removed from the casting mold and the cycle is repeated. The temperature of the casting mold, before and after its filling with molten metal, is regulated by controlling the powers of the cooling and the heating systems arranged within the casting mold.

Abstract: A method in which the melt is first treated with solid alloying additives and an alloying gas, and then the casting operation is effected. There is produced a differential between the pressures in the space for additional saturation with alloying gas and in the space where the casting takes place.An apparatus for practicing the above method comprising an induction furnace in a first hermetic chamber, and a second hermetic chamber inside which there is mounted a casting mold. The induction furnace and the first hermetic chamber are interconnected with the second hermetic chamber via a movable launder. Above the one end of the movable launder there is mounted a siphon, underneath its other end there is disposed an tundish, which is mounted inside the first hermetic chamber and is gas-tightly sealed against a separating plate, attached to the second hermetic chamber containing the casting mold. The tundish is provided with a bottom for blowing-through with alloying gas.

Abstract: A pressure die casting method and apparatus wherein the delivery tube from the melt reservoir contained in the pressurizable housing can receive the melt on the tube affixed to the mold which also is in a pressurizable housing and when the latter tube is retracted from the former, a sliding shutter closes the top of the reservoir tube. Gas communication between the upper end of the reservoir tube and the interior of the housing is permitted to ensure that a gas layer corresponding to that in the housing will overlie the melt in the reservoir portion of the tube.

Abstract: An apparatus for nitriding metal materials and ferroalloys under pressure in which a melting furnace is positioned above a pulverizing chamber and connected thereto, with an intake chamber, provided with a pulverizer, disposed in between with a dust-catching cyclone having a suction collector being connected to the upper portion of the pulverizing chamber. An exchange hopper is connected to an outlet formed in the lower portion of the pulverizing chamber and feeds into an inlet end of a pipe furnace which in turn, feeds into an intermediate hopper. An end hopper is positioned beneath the intermediate hopper and connected thereto and feeds into a briquetting installation. Separate pipe conduit systems are connected to the various elements of the apparatus for supplying pressurized nitrogen thereto or for the evacuation thereof.

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.

Abstract: An induction crucible furnace for the smelting of materials comprises a crucible which is surrounded by the induction coils and yoke which are mounted upon an intermediate vessel or shell closed by a cover overlying a mass of insulating material interposed between the crucible and inductor and the shell. The intermediate shell has an outwardly extending support flange by which it is mounted on an outward flange of the outer housing with clearance, the clearance likewise being filled with insulating material through openings formed in the flange of the intermediate shell inwardly of the wall of the housing. The flange of the latter projects beyond the flange of the intermediate member and a cover is connected to the housing flange to hermetically seal the system.

Abstract: A casting apparatus for low-pressure or counterpressure casting of nonferrous metals comprises a casting mold which is fed with the melt by a siphon tube opening upwardly into the mold and communicating with an intermediate crucible for molten metal. The siphon tube has an elbow lying above the level of the molten metal in the intermediate crucible which is connected to a main crucible by a conduit whose inlet into the intermediate crucible can be blocked by a bell. Gas from an inert-gas supply can be applied under pressure to the crucible and the elbow.