Abstract: A valve device for metallurgical containers includes an electric circuit formed by two electrodes opening out into the molten metal at the tapping point. The electric circuit measures the resistive voltage drop across the molten metal at the tapping point to determine the slag content in the tap stream by changes in the measured resistive voltage drop. The rate of tapping of the melt can be controlled simultaneously along with the indication of the presence of slag in the tap stream.

Abstract: In the feeding of molten metal from a container therefor, e.g., a storage basin, a furnace or a crucible, to a chamber, e.g., an injection cylinder or a dispensing chamber, having an electromagnetic pump partially immersed in the container, the outlet of the pump being connected by a feedline to the chamber, the molten metal is metered by apparatus comprising a detachable ascending control pipeline connected to the feed pipeline, an electromagnetic presence detector arranged to detect molten metal in the control pipeline at the level of the filling height of the chamber, and a progressive voltage generator connected in series with the electrical circuit of the pump and including a starter circuit and a stop circuit to which the presence detector is connected.

Abstract: The level of a metallic bath, e.g. of an iron melt in an ingot mold, is determined by recurrent electro-optical scanning of the interior of the vessel along a narrow vertical strip zone. The output signals of the scanner are processed in an arithmetic unit which averages successive readings, to compensate for fluctuations, and may also receive a corrective signal in order to offset periodic level changes due to an intentional rocking of the vessel. The arithmetic unit may work into a visual indicator and into a controller adjusting the rate of inflow and/or withdrawal to maintain the bath level substantially constant.

Abstract: Apparatus for accurately pouring measured amounts of molten metal using an electromagnetic elevator. The trough of the elevator obliquely ascends from a pool of molten metal to a pouring spout and controls are provided to maintain the pool level at approximately a constant level so that by accurately repeating the time of the electrical energization of the elevator, the same amount of metal may be poured each time.

Abstract: In a battery grid casting machine there is provided in the feed line from the lead pot to the lead dispensing valve a shut-off valve having a passageway therethrough of relatively small cross section which is surrounded by a water jacket such that, when cold water is directed through the water jacket, the lead in the restricted passageway solidifies into a solid slug and prevents the further flow of lead therethrough.

Abstract: Apparatus for constricting a jet of liquid metal at the outlet of the orifice of a nozzle. The jet is constricted due to the provision of a winding which surrounds the discharge end of the nozzle, and a conductive cylindrical screen which extends into the winding. The apparatus can be used to constrict streams of molten steel, aluminum, copper or copper or aluminum alloys preparatory to flow of molten metal through a joint between two conduits which are not sealingly connected to each other or for the making of wire or small-diameter billets.

Abstract: The furnace has an oblique wall extending at an obtuse angle to the furnace hearth, and arranged below said wall is a travelling magnetic field inductor intended for moving a flow of molten metal to be directed downwards along the oblique wall for stirring the metal and upwards for the delivery of metal from the furnace. An inclined partition wall is provided over the oblique wall to run in parallel therewith above the metal discharging hole, the partition wall extending to the metal level in the furnace and short of the furnace hearth. A plate made of non-magnetic material is secured to the oblique wall on the side of location of the inductor, the fastening devices of the plate allowing its dimensions to be changed upon heating of the plate.

Abstract: A method of, and apparatus for, starting-up the casting of a strand during continuous casting, wherein molten metal, typically steel, is teemed through a bottom pouring outlet or opening of a tundish at a throughflow rate essentially determined by the dimensions of the pouring opening, into a continuous casting mold. By means of the dummy bar head of a dummy bar there is formed a connection between the dummy bar and the solidified strand forming in the continuous casting mold and after reaching a predetermined bath level in the mold the strand is withdrawn.

Abstract: A nozzle assembly for atomizing a stream of molten metal includes a refractory metal-transmitting nozzle having a short metering orifice at its entrance end and a relatively long divergent discharge passage terminating at a flat annular land formed at the bottom end of the metal-transmitting nozzle. The metal-transmitting nozzle is seated in an opening in the bottom of a tundish or other source of molten metal with its upper end containing its metering orifice projecting into the molten metal reservoir. The lower-end portion projects from the bottom of the tundish and through the central portion of an atomizing fluid nozzle assembly in which it seats. The central portion of the atomizing fluid nozzle assembly projects below the bottom member of the atomizing fluid nozzle assembly and forms an atomizing fluid orifice therewith.