The invention relates to systems for transferring molten metal from one structure to another. Aspects of the invention include a transfer chamber constructed inside of or next to a vessel used to retain molten metal. The transfer chamber is in fluid communication with the vessel so molten metal from the vessel can enter the transfer chamber. A powered device, which may be inside of the transfer chamber, moves molten metal upward and out of the transfer chamber and preferably into a structure outside of the vessel, such as another vessel or a launder.

The invention relates to systems for transferring molten metal from one structure to another. Aspects of the invention include a transfer chamber constructed inside of or next to a vessel used to retain molten metal. The transfer chamber is in fluid communication with the vessel so molten metal from the vessel can enter the transfer chamber. A powered device, which may be inside of the transfer chamber, moves molten metal upward and out of the transfer chamber and preferably into a structure outside of the vessel, such as another vessel or a launder.

A tap to pour beer foam onto a liquid has a flow path through which the beer foam flows. A folded section and a second extension section of the flow path are curved along a liquid surface of the liquid.

A pouring machine is provided to constantly maintain the level of the surface of melt without a leak, or the like, to maintain a necessary and sufficient pouring rate. The pouring machine (1) that pours molten metal from a container into molds in a line comprises a bogie (10) that travels along the molds; a mechanism (20) for moving the container back and forth that moves the container perpendicularly to the direction that the bogie travels; a mechanism (40) for tilting the container that tilts the container; a weight detector (50) that detects the weight of molten metal in the container; a surface-of-melt detector (60) that detects the level at a pouring cup (110) of a mold (100); and a controller (70) that controls the angle of the tilt of the container by using the detected level and the detected weight.

A pouring machine is provided to constantly maintain the level of the surface of melt without a leak, or the like, to maintain a necessary and sufficient pouring rate. The pouring machine (1) that pours molten metal from a container into molds in a line comprises a bogie (10) that travels along the molds; a mechanism (20) for moving the container back and forth that moves the container perpendicularly to the direction that the bogie travels; a mechanism (40) for tilting the container that tilts the container; a weight detector (50) that detects the weight of molten metal in the container; a surface-of-melt detector (60) that detects the level at a pouring cup (110) of a mold (100); and a controller (70) that controls the angle of the tilt of the container by using the detected level and the detected weight.

The invention relates to a method for forming a transfer chamber inside a cavity of, or next to, a vessel used to retain molten metal. A form is positioned in or next to the vessel, wherein the form defines the transfer chamber. Refractory material is placed into the form, and an opening is left beneath the transfer chamber wherein molten metal can flow into the opening. The transfer chamber is formed such that at least one chamber wall of the transfer chamber is part of at least one outer wall of the vessel, and at least one chamber wall is inside the vessel cavity and is not an outer wall of the vessel. The transfer chamber is formed with an uptake section, a top surface with an opening, and an outlet. The method may also include placing brackets into position and positioning a molten metal pump in the transfer chamber.

The invention relates to a method for forming a transfer chamber inside a cavity of, or next to, a vessel used to retain molten metal. A form is positioned in or next to the vessel, wherein the form defines the transfer chamber. Refractory material is placed into the form, and an opening is left beneath the transfer chamber wherein molten metal can flow into the opening. The transfer chamber is formed such that at least one chamber wall of the transfer chamber is part of at least one outer wall of the vessel, and at least one chamber wall is inside the vessel cavity and is not an outer wall of the vessel. The transfer chamber is formed with an uptake section, a top surface with an opening, and an outlet. The method may also include placing brackets into position and positioning a molten metal pump in the transfer chamber.

A cold crucible for casting metals includes: a metal body having walls defining an internal volume inside which a material is received, the walls are divided into segments by a plurality of slits; an induction coil wound around said body and configured so as to melt the material; a cooling system to maintain circulation of a fluid between one or more fluid inlets and one or more fluid outlets

The cooling system includes a heat exchanger, integrated within a volume of the segments, made up of interconnected structures, fluidically connected to each other, and fluidically connected to the one or more fluid inlets and to the one or more fluid outlets so that the fluid can circulate inside the heat exchanger along one or more paths extending between the fluid inlets and the fluid outlets, with a net mass flow between the fluid inlets and outlets.

A cold crucible for casting metals includes: a metal body having walls defining an internal volume inside which a material is received, the walls are divided into segments by a plurality of slits; an induction coil wound around said body and configured so as to melt the material; a cooling system to maintain circulation of a fluid between one or more fluid inlets and one or more fluid outlets

The cooling system includes a heat exchanger, integrated within a volume of the segments, made up of interconnected structures, fluidically connected to each other, and fluidically connected to the one or more fluid inlets and to the one or more fluid outlets so that the fluid can circulate inside the heat exchanger along one or more paths extending between the fluid inlets and the fluid outlets, with a net mass flow between the fluid inlets and outlets.

A device for pumping molten metal includes a pump configured to pump molten metal, wherein the pump comprises (i) a motor, (ii) a shaft having a first end connected to the motor, and a second end connected to a rotor, wherein the rotor is configured to push molten metal upwards as it rotates. At least part of the shaft and the rotor are positioned in a conduit of a riser. The riser has an outer surface, a front, a bottom, a two-stage conduit, an inlet and an outlet above the inlet and below the motor. The two-stage conduit has a lower stage and a an upper stage, wherein the lower stage is generally cylindrical and the upper stage has a circular cross-sectional portion and one or more lobes extending from and in communication with the circular cross-sectional portion.