6741results about "Melt-holding vessels" patented technology

A molten metal pump including a pump base with an inlet and outlet, a mixing impeller chamber for mixing gas and molten metal, a pumping impeller chamber for pumping molten metal. First and second impeller members supported by a shaft are adapted to rotate in mixing and pumping chambers respectively. The impeller members may be integrally formed of a single impeller or separate impellers on one or more shafts. A gas passageway extends from a gas source to the mixing chamber in the base. A gas dispersement pump includes a base with an impeller chamber and inlet and an outlet. An impeller is mounted to a shaft and adapted to be rotated in the impeller chamber. A gas passageway extends from a gas source to a gas outlet proximate to the impeller chamber. A gas dispersement member of porous refractory material is adapted to disperse gas from the gas passageway. In a gas dispersement and gas / molten metal mixing pump, the dispersement member disperses the gas stream entering the mixing chamber where the gas is mixed with molten metal. Molten metal is pumped in the pumping chamber. A gas / molten metal mixture is discharged from the mixing chamber and molten metal is discharged from the pumping chamber.

Method and system for providing volume manufacturing of customizable items including receiving a data package including a plurality of manufacturing parameters, each of the plurality of manufacturing parameters associated with a unique item, verifying the received data package, and implementing a manufacturing process associated with the received data package is provided.

An inline degassing apparatus for removing solid solution gases as well as nonmetallic inclusions from molten metal in a degassing container, to which the molten metal is continuously introduced for degassing operation and from which the degassed molten metal is continuously removed. A rotary diffusing device is arranged in the degassing container for generating bubbles of inert gas diffused into the molten metal, thereby entrapping solid solution gases as well as nonmetallic inclusions into the bubbles, which are then floated and separated. Heaters are provided, which extend, in a cantilever fashion, from a side wall of container at a position adjacent the bottom wall of the container substantially parallel to the bottom wall.

A device for dispersing gas into molten metal includes an impeller, a drive shaft having a gas-transfer passage therein, and a first end and a second end, and a drive source. The second end of the drive shaft is connected to the impeller and the first end is connected to the drive source. The impeller includes a first portion and a second portion with a plurality of cavities. The first portion covers the second portion to help prevent gas from escaping to the surface without entering the cavities and being mixed with molten metal as the impeller rotates. When gas is transferred through the gas-transfer passage, it exits through the gas-release opening(s) in the bottom of the impeller. At least some of the gas enters the cavities where it is mixed with the molten metal being displaced by the impeller. Also disclosed are impellers that can be used to practice the invention.

Disclosed is a transportable vessel for use in a factory for processing molten metal. The vessel is not connected to a reverbatory furnace and can be moved to different locations in the factory. The vessel includes a transfer conduit in communication with a cavity of the vessel. A molten metal pump can be positioned in the transfer conduit to move molten metal out of an outlet in communication with the transfer conduit and into another vessel without the need to tip or tilt the transportable vessel.

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 trough is described for carrying molten metal, comprising an outer shell defined by a bottom wall and two side walls, an insulating layer filling the outer shell and a conductive U-shaped refractory trough body for carrying molten metal, the trough body being embedded in the insulating layer. At least one heating element is positioned in the insulating layer, adjacent to but spaced apart from the trough body, to provide an air gap between the heating element and the trough body.

A device for releasing gas into molten metal includes a base having a discharge. The discharge has a first section including a first cross-sectional area and a second section including a second cross-sectional area, wherein the first section is upstream of the second section and the first cross-sectional area is smaller than the second cross-sectional area. A gas-release opening is positioned so that it can release gas into one or more of the first section or the second section. As the molten metal moves from the first cross-sectional area to the second cross-sectional area gas is released into the molten metal and the molten metal flow helps to draw the gas into the flow, thereby lowering the pressure required to release gas into the molten metal. Metal-transfer conduits other than a discharge incorporated in a pump base are also disclosed, as are pumps including either a discharge or other metal-transfer conduit according to the invention.