A vertically-elongated member, which is preferably a support post used in a molten metal pump, includes a ceramic tube and tensioning structures to add a compressive load to the tube along its longitudinal axis. This makes the tube less prone to breakage. Another vertically-elongated member, such as a support post, includes one or more reinforcement members to help alleviate breakage. A device, such as a pump, used in a molten metal bath includes one or more of such vertical members.
A device includes a molten metal pump and a metal-transfer conduit. A clamp may be used to attach the metal-transfer conduit to the pump. The pump has a pump base including an indentation configured to receive the metal-transfer conduit and align the pump outlet with the transfer inlet. The pump outlet may be formed in the indentation and preferably near the center of the indentation in order to better align with the transfer inlet. As the pump operates it moves molten metal through a pump outlet that is in communication with a transfer inlet in the metal-transfer conduit. The molten metal enters the transfer inlet, moves upwards in a passage in the metal-transfer conduit, and out of a transfer outlet.
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.
F04D 7/06 - Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type the fluids being hot or corrosive, e.g. liquid metal
F04D 13/06 - Units comprising pumps and their driving means the pump being electrically driven
4.
Tensioned support post and other molten metal devices
A vertically-elongated member, which is preferably a support post used in a molten metal pump, includes a ceramic tube and tensioning structures to add a compressive load to the tube along its longitudinal axis. This makes the tube less prone to breakage. Another vertically-elongated member, such as a support post, includes one or more reinforcement members to help alleviate breakage. A device, such as a pump, used in a molten metal bath includes one or more of such vertical members.
A launder for use in moving molten metal includes at least one relatively narrow channel through which molten metal flows. Using a narrow, rather than broad, channel permits better control of the flow and helps prevent overflowing the launder or a structure adjacent the launder. A molten metal pumping or transfer system may utilize a launder as disclosed herein.
B22D 41/00 - Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
B22D 35/04 - Equipment for conveying molten metal into beds or moulds into moulds, e.g. base plates, runners
B22D 39/00 - Equipment for supplying molten metal in rations
B22D 39/02 - Equipment for supplying molten metal in rations having means for controlling the amount of molten metal by volume
F04D 7/06 - Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type the fluids being hot or corrosive, e.g. liquid metal
F04D 29/42 - CasingsConnections for working fluid for radial or helico-centrifugal pumps
F27B 3/04 - Hearth-type furnaces, e.g. of reverberatory typeElectric arc furnaces of multiple-hearth typeHearth-type furnaces, e.g. of reverberatory typeElectric arc furnaces of multiple-chamber typeCombinations of hearth-type furnaces
F27D 3/00 - ChargingDischargingManipulation of charge
F27D 3/14 - Charging or discharging liquid or molten material
A device includes a molten metal pump and a metal-transfer conduit. A clamp may be used to attach the metal-transfer conduit to the pump. The pump has a pump base including an indentation configured to receive the metal-transfer conduit and align the pump outlet with the transfer inlet. The pump outlet may be formed in the indentation and preferably near the center of the indentation in order to better align with the transfer inlet. As the pump operates it moves molten metal through a pump outlet that is in communication with a transfer inlet in the metal-transfer conduit. The molten metal enters the transfer inlet, moves upwards in a passage in the metal-transfer conduit, and out of a transfer outlet.
F04D 29/42 - CasingsConnections for working fluid for radial or helico-centrifugal pumps
F04D 7/06 - Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type the fluids being hot or corrosive, e.g. liquid metal
F27D 3/00 - ChargingDischargingManipulation of charge
F27D 3/14 - Charging or discharging liquid or molten material
A system and method for filling a mold with molten aluminum includes a molten metal pump, a vessel configured to contain molten metal, a mold for receiving molten metal, and a conduit between the vessel and the mold. Molten metal is pumped in the vessel until it reaches a level at which it flows through the conduit and into the mold. The flow of molten metal into the mold is stabilized to maintain a level of molten metal in the mold. A skin of solid metal forms between the mold and the conduit, at which time the pumping of molten metal can cease. The mold with solid metal in it can be moved.
B22D 41/00 - Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
B22D 35/04 - Equipment for conveying molten metal into beds or moulds into moulds, e.g. base plates, runners
B22D 39/02 - Equipment for supplying molten metal in rations having means for controlling the amount of molten metal by volume
F04D 7/06 - Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type the fluids being hot or corrosive, e.g. liquid metal
F27B 3/04 - Hearth-type furnaces, e.g. of reverberatory typeElectric arc furnaces of multiple-hearth typeHearth-type furnaces, e.g. of reverberatory typeElectric arc furnaces of multiple-chamber typeCombinations of hearth-type furnaces
F27D 3/14 - Charging or discharging liquid or molten material
A smart molten metal pump system and method automatically controls the operating speed of the pump rather than requiring an operator to control the speed. The system includes a pump, a controller for controlling the speed of the pump and one or more vibration sensors (such as an accelerometer) to measure vibration. The controller receives input about the vibration of the pump or one or more pump components, and possibly other data, such as the temperature of the molten metal, and/or the depth of the molten metal, ad/or parameters related to the operation of the pump. The controller analyzes the one or more inputs to vary the speed of the pump, turn the pump off, and/or send a communication to an operator.
B22D 41/00 - Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
B22D 35/04 - Equipment for conveying molten metal into beds or moulds into moulds, e.g. base plates, runners
B22D 39/00 - Equipment for supplying molten metal in rations
B22D 39/02 - Equipment for supplying molten metal in rations having means for controlling the amount of molten metal by volume
F04D 7/06 - Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type the fluids being hot or corrosive, e.g. liquid metal
F04D 29/42 - CasingsConnections for working fluid for radial or helico-centrifugal pumps
F27B 3/04 - Hearth-type furnaces, e.g. of reverberatory typeElectric arc furnaces of multiple-hearth typeHearth-type furnaces, e.g. of reverberatory typeElectric arc furnaces of multiple-chamber typeCombinations of hearth-type furnaces
F27D 3/00 - ChargingDischargingManipulation of charge
F27D 3/14 - Charging or discharging liquid or molten material
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.
F04D 7/06 - Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type the fluids being hot or corrosive, e.g. liquid metal
F04D 13/06 - Units comprising pumps and their driving means the pump being electrically driven
10.
Tensioned support post and other molten metal devices
A vertically-elongated member, which is preferably a support post used in a molten metal pump, includes a ceramic tube and tensioning structures to add a compressive load to the tube along its longitudinal axis. This makes the tube less prone to breakage. Another vertically-elongated member, such as a support post, includes one or more reinforcement members to help alleviate breakage. A device, such as a pump, used in a molten metal bath includes one or more of such vertical members.
A system according to aspects of the invention includes a pump and a refractory casing that houses the pump or is in fluid communication with the pump. As the pump operates it moves molten metal upward through an uptake section of the casing until it reaches a rectangular outlet wherein it exits the vessel. The rectangular outlet is configured to be connected to, or may be attached to, a launder. Another system uses a wall to divide a cavity of the chamber into two portions. The wall has an opening and a pump pumps molten metal from a first portion into a second portion until the level in the second portion reaches an outlet and exits the vessel.
B22D 41/00 - Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
B22D 35/04 - Equipment for conveying molten metal into beds or moulds into moulds, e.g. base plates, runners
B22D 39/00 - Equipment for supplying molten metal in rations
B22D 39/02 - Equipment for supplying molten metal in rations having means for controlling the amount of molten metal by volume
F04D 7/06 - Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type the fluids being hot or corrosive, e.g. liquid metal
F04D 29/42 - CasingsConnections for working fluid for radial or helico-centrifugal pumps
F27B 3/04 - Hearth-type furnaces, e.g. of reverberatory typeElectric arc furnaces of multiple-hearth typeHearth-type furnaces, e.g. of reverberatory typeElectric arc furnaces of multiple-chamber typeCombinations of hearth-type furnaces
F27D 3/00 - ChargingDischargingManipulation of charge
F27D 3/14 - Charging or discharging liquid or molten material
A smart molten metal pump system and method automatically controls the operating speed of the pump rather than requiring an operator to control the speed. The system includes a pump, a controller for controlling the speed of the pump and one or more vibration sensors (such as an accelerometer) to measure vibration. The controller receives input about the vibration of the pump or one or more pump components, and possibly other data, such as the temperature of the molten metal, and/or the depth of the molten metal, ad/or parameters related to the operation of the pump. The controller analyzes the one or more inputs to vary the speed of the pump, turn the pump off, and/or send a communication to an operator.
B22D 41/00 - Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
B22D 35/04 - Equipment for conveying molten metal into beds or moulds into moulds, e.g. base plates, runners
F04D 7/06 - Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type the fluids being hot or corrosive, e.g. liquid metal
F27D 3/14 - Charging or discharging liquid or molten material
F27B 3/04 - Hearth-type furnaces, e.g. of reverberatory typeElectric arc furnaces of multiple-hearth typeHearth-type furnaces, e.g. of reverberatory typeElectric arc furnaces of multiple-chamber typeCombinations of hearth-type furnaces
B22D 39/02 - Equipment for supplying molten metal in rations having means for controlling the amount of molten metal by volume
A device includes a molten metal pump and a metal-transfer conduit. A clamp may be used to attach the metal-transfer conduit to the pump. The pump has a pump base including an indentation configured to receive the metal-transfer conduit and align the pump outlet with the transfer inlet. The pump outlet may be formed in the indentation and preferably near the center of the indentation in order to better align with the transfer inlet. As the pump operates it moves molten metal through a pump outlet that is in communication with a transfer inlet in the metal-transfer conduit. The molten metal enters the transfer inlet, moves upwards in a passage in the metal-transfer conduit, and out of a transfer outlet.
F04D 29/42 - CasingsConnections for working fluid for radial or helico-centrifugal pumps
F27D 3/00 - ChargingDischargingManipulation of charge
F04D 7/06 - Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type the fluids being hot or corrosive, e.g. liquid metal
A scrap melting system and method includes a vessel that is configured to retain molten metal and a raised surface about the level of molten metal in the vessel. Solid metal is placed on the raised surface and molten metal from the vessel is moved upward from the vessel and across the raised surface to melt at least some of the solid metal. The molten metal is preferably raised from the vessel to the raised surface by a molten metal pumping device or system. The molten metal moves from the raised surface and into a vessel or launder.
B22D 41/00 - Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
B22D 35/04 - Equipment for conveying molten metal into beds or moulds into moulds, e.g. base plates, runners
F04D 7/06 - Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type the fluids being hot or corrosive, e.g. liquid metal
F27D 3/14 - Charging or discharging liquid or molten material
F27B 3/04 - Hearth-type furnaces, e.g. of reverberatory typeElectric arc furnaces of multiple-hearth typeHearth-type furnaces, e.g. of reverberatory typeElectric arc furnaces of multiple-chamber typeCombinations of hearth-type furnaces
B22D 39/02 - Equipment for supplying molten metal in rations having means for controlling the amount of molten metal by volume
A molten metal rotor receives and retains an end of a molten metal rotor shaft. The rotor shaft has one or more projections at the end received in the rotor. The rotor has an inner cavity, a top surface with an opening leading to the inner cavity, and at least one abutment. The opening includes one or more portions for allowing each projection to pass through the opening and into the inner cavity. The rotor and/or shaft are then rotated so at least one of the outwardly-extending projections is under the top surface of the rotor and is against an abutment. A molten metal pump, rotary degasser scrap melter or other device used in molten metal may utilize a rotor/shaft combination as disclosed herein.
F04D 7/06 - Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type the fluids being hot or corrosive, e.g. liquid metal
C22B 7/00 - Working-up raw materials other than ores, e.g. scrap, to produce non-ferrous metals or compounds thereof
C22B 9/00 - General processes of refining or remelting of metalsApparatus for electroslag or arc remelting of metals
A scrap melting system and method includes a vessel that is configured to retain molten metal and a raised surface about the level of molten metal in the vessel. Solid metal is placed on the raised surface and molten metal from the vessel is moved upward from the vessel and across the raised surface to melt at least some of the solid metal. The molten metal is preferably raised from the vessel to the raised surface by a molten metal pumping device or system. The molten metal moves from the raised surface and into a vessel or launder.
B22D 41/00 - Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
B22D 35/04 - Equipment for conveying molten metal into beds or moulds into moulds, e.g. base plates, runners
F04D 7/06 - Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type the fluids being hot or corrosive, e.g. liquid metal
F27D 3/14 - Charging or discharging liquid or molten material
F27B 3/04 - Hearth-type furnaces, e.g. of reverberatory typeElectric arc furnaces of multiple-hearth typeHearth-type furnaces, e.g. of reverberatory typeElectric arc furnaces of multiple-chamber typeCombinations of hearth-type furnaces
B22D 39/02 - Equipment for supplying molten metal in rations having means for controlling the amount of molten metal by volume
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 vertically-elongated member, which is preferably a support post used in a molten metal pump, includes a ceramic tube and tensioning structures to add a compressive load to the tube along its longitudinal axis. This makes the tube less prone to breakage. Another vertically-elongated member, such as a support post, includes one or more reinforcement members to help alleviate breakage. A device, such as a pump, used in a molten metal bath includes one or more of such vertical members.
A vertical member, which is preferably a support post used in a molten metal pump, includes a ceramic tube and tensioning structures to add a compressive load to the tube along its longitudinal axis. This makes the tube less prone to breakage. A device, such as a pump, used in a molten metal bath includes one or more of such vertical members.
F04D 7/06 - Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type the fluids being hot or corrosive, e.g. liquid metal
Embodiments of the invention are directed to a rotor for use in molten metal and devices including the rotor. The rotor has a rotor body and blades, wherein each blade includes a tip that is at least twice as hard as the rotor body.
F04D 7/06 - Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type the fluids being hot or corrosive, e.g. liquid metal
A scrap melting system and method includes a vessel that is configured to retain molten metal and a raised surface about the level of molten metal in the vessel. Solid metal is placed on the raised surface and molten metal from the vessel is moved upward from the vessel and across the raised surface to melt at least some of the solid metal. The molten metal is preferably raised from the vessel to the raised surface by a molten metal pumping device or system. The molten metal moves from the raised surface and into a vessel or launder.
B22D 41/00 - Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
F04D 7/06 - Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type the fluids being hot or corrosive, e.g. liquid metal
F27D 3/14 - Charging or discharging liquid or molten material
B22D 35/04 - Equipment for conveying molten metal into beds or moulds into moulds, e.g. base plates, runners
F27B 3/04 - Hearth-type furnaces, e.g. of reverberatory typeElectric arc furnaces of multiple-hearth typeHearth-type furnaces, e.g. of reverberatory typeElectric arc furnaces of multiple-chamber typeCombinations of hearth-type furnaces
B22D 39/02 - Equipment for supplying molten metal in rations having means for controlling the amount of molten metal by volume
A scrap melting system and method includes a vessel that is configured to retain molten metal and a raised surface about the level of molten metal in the vessel. Solid metal is placed on the raised surface and molten metal from the vessel is moved upward from the vessel and across the raised surface to melt at least some of the solid metal. The molten metal is preferably raised from the vessel to the raised surface by a molten metal pumping device or system. The molten metal moves from the raised surface and into a vessel or launder.
F04D 7/06 - Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type the fluids being hot or corrosive, e.g. liquid metal
F27D 3/14 - Charging or discharging liquid or molten material
B22D 39/02 - Equipment for supplying molten metal in rations having means for controlling the amount of molten metal by volume
B22D 41/00 - Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
B22D 35/04 - Equipment for conveying molten metal into beds or moulds into moulds, e.g. base plates, runners
F27B 3/04 - Hearth-type furnaces, e.g. of reverberatory typeElectric arc furnaces of multiple-hearth typeHearth-type furnaces, e.g. of reverberatory typeElectric arc furnaces of multiple-chamber typeCombinations of hearth-type furnaces
A smart molten metal pump system and method automatically controls the operating speed of the pump rather than requiring an operator to control the speed. The system includes a pump, a controller for controlling the speed of the pump, and one or more of a temperature sensor (such as a thermocouple), one or more of a device (such as a laser or float) to measure the depth of the molten metal, and one or more of a vibration sensor (such as an accelerometer) to measure vibration. The controller receives input about the temperature of the molten metal, and/or about the depth of the molten metal, and/or about the vibration of the pump or one or more pump components, and possibly other data. The controller analyzes the one or more inputs to vary the speed of the pump, turn the pump off, and/or send a communication to an operator.
B22D 35/04 - Equipment for conveying molten metal into beds or moulds into moulds, e.g. base plates, runners
F04D 7/06 - Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type the fluids being hot or corrosive, e.g. liquid metal
F27B 3/04 - Hearth-type furnaces, e.g. of reverberatory typeElectric arc furnaces of multiple-hearth typeHearth-type furnaces, e.g. of reverberatory typeElectric arc furnaces of multiple-chamber typeCombinations of hearth-type furnaces
B22D 39/02 - Equipment for supplying molten metal in rations having means for controlling the amount of molten metal by volume
B22D 39/00 - Equipment for supplying molten metal in rations
F27D 3/00 - ChargingDischargingManipulation of charge
F04D 29/42 - CasingsConnections for working fluid for radial or helico-centrifugal pumps
A system according to aspects of the invention includes a pump and a refractory casing that houses the pump or is in fluid communication with the pump. As the pump operates it moves molten metal upward through an uptake section of the casing until it reaches a rectangular outlet wherein it exits the vessel. The rectangular outlet is configured to be connected to, or may be attached to, a launder. Another system uses a wall to divide a cavity of the chamber into two portions. The wall has an opening and a pump pumps molten metal from a first portion into a second portion until the level in the second portion reaches an outlet and exits the vessel.
A launder for use in moving molten metal includes at least one relatively narrow channel through which molten metal flows. Using a narrow, rather than broad, channel permits better control of the flow and helps prevent overflowing the launder or a structure adjacent the launder. A molten metal pumping or transfer system may utilize a launder as disclosed herein.
B22D 41/00 - Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
B22D 35/04 - Equipment for conveying molten metal into beds or moulds into moulds, e.g. base plates, runners
B22D 39/00 - Equipment for supplying molten metal in rations
B22D 39/02 - Equipment for supplying molten metal in rations having means for controlling the amount of molten metal by volume
F04D 7/06 - Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type the fluids being hot or corrosive, e.g. liquid metal
F04D 29/42 - CasingsConnections for working fluid for radial or helico-centrifugal pumps
F27B 3/04 - Hearth-type furnaces, e.g. of reverberatory typeElectric arc furnaces of multiple-hearth typeHearth-type furnaces, e.g. of reverberatory typeElectric arc furnaces of multiple-chamber typeCombinations of hearth-type furnaces
F27D 3/00 - ChargingDischargingManipulation of charge
F27D 3/14 - Charging or discharging liquid or molten material
A system and method for filling a mold with molten aluminum includes a molten metal pump, a vessel configured to contain molten metal, a mold for receiving molten metal, and a conduit between the vessel and the mold. Molten metal is pumped in the vessel until it reaches a level at which it flows through the conduit and into the mold. The flow of molten metal into the mold is stabilized to maintain a level of molten metal in the mold. A skin of solid metal forms between the mold and the conduit, at which time the pumping of molten metal can cease. The mold with solid metal in it can be moved.
B22D 41/00 - Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
B22D 35/04 - Equipment for conveying molten metal into beds or moulds into moulds, e.g. base plates, runners
F04D 7/06 - Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type the fluids being hot or corrosive, e.g. liquid metal
F27D 3/14 - Charging or discharging liquid or molten material
F27B 3/04 - Hearth-type furnaces, e.g. of reverberatory typeElectric arc furnaces of multiple-hearth typeHearth-type furnaces, e.g. of reverberatory typeElectric arc furnaces of multiple-chamber typeCombinations of hearth-type furnaces
B22D 39/02 - Equipment for supplying molten metal in rations having means for controlling the amount of molten metal by volume
Embodiments of the invention are directed to a rotor for a molten metal pump and a molten metal pump including the rotor. The rotor has a main body and a top comprised of a material that is at least twice as hard as the main body. The top, among other things, may form a first portion of each rotor blade wherein the first portion directs molten metal into a pump chamber or other structure in which the rotor is mounted.
F04D 7/06 - Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type the fluids being hot or corrosive, e.g. liquid metal
B22D 17/30 - Accessories for supplying molten metal, e.g. in rations
F27D 3/00 - ChargingDischargingManipulation of charge
28.
Tensioned support shaft and other molten metal devices
A vertical member, which is preferably a support post used in a molten metal pump, includes a ceramic tube and tensioning structures to add a compressive load to the tube along its longitudinal axis. This makes the tube less prone to breakage. A device, such as a pump, used in a molten metal bath includes one or more of such vertical members.
F04D 7/06 - Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type the fluids being hot or corrosive, e.g. liquid metal
A vertical member, which is preferably a support post used in a molten metal pump, includes a ceramic tube and tensioning structures to add a compressive load to the tube along its longitudinal axis. This makes the tube less prone to breakage. A device, such as a pump, used in a molten metal bath includes one or more of such vertical members.
F04D 7/06 - Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type the fluids being hot or corrosive, e.g. liquid metal
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.
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 method for transferring molten metal from one structure to another includes a cavity constructed inside of or next to a vessel used to retain molten metal. The cavity is divided into a first section and a second section by a wall, wherein the second section includes an uptake section configured to allow molten metal to move upwards, and includes a molten metal pump. The cavity is in fluid communication with the vessel so molten metal from the vessel can enter the cavity through an opening. The pump is operated to move molten metal up upwards in the intake section and through an outlet.
A pump for transferring molten metal includes an intake tube, a motor, a rotor positioned at least partially within the bottom end of the intake tube, a rotor shaft positioned at least partially in the intake tube, the rotor shaft having a first end attached to the motor and a second end attached to the rotor. An overflow conduit is attached to the intake tube. The pump does not include a pump housing and preferably does not include a superstructure, so it is relatively small, light and portable. In use, the motor drives the rotor shaft and rotor to generate a flow of molten metal upward into the intake tube and into the overflow conduit where it is discharged.
F04D 7/06 - Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type the fluids being hot or corrosive, e.g. liquid metal
F04D 13/08 - Units comprising pumps and their driving means the pump being electrically driven for submerged use
A coupling has an opening and a protrusion extending downward from the opening. The protrusion has threads that are preferably positioned outside of the opening. A rotor shaft that connects to the coupling has an internal bore with threads that receives and retains the protrusion, such as by a threaded connection between the two, so the protrusion applies driving force to the shaft.
F04D 7/06 - Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type the fluids being hot or corrosive, e.g. liquid metal
F27D 3/16 - Introducing a fluid jet or current into the charge
A coupling has an opening and a protrusion extending downward from the opening. The protrusion has threads that are preferably positioned outside of the opening. A rotor shaft that connects to the coupling has an internal bore with threads that receives and retains the protrusion, such as by a threaded connection between the two, so the protrusion applies driving force to the shaft.
F04D 7/06 - Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type the fluids being hot or corrosive, e.g. liquid metal
C22B 7/00 - Working-up raw materials other than ores, e.g. scrap, to produce non-ferrous metals or compounds thereof
C22B 9/00 - General processes of refining or remelting of metalsApparatus for electroslag or arc remelting of metals
A vertically-elongated member, which is preferably a support post used in a molten metal pump, includes a ceramic tube and tensioning structures to add a compressive load to the tube along its longitudinal axis. This makes the tube less prone to breakage. Another vertically-elongated member, such as a support post, includes one or more reinforcement members to help alleviate breakage. A device, such as a pump, used in a molten metal bath includes one or more of such vertical members.
A transfer pump has a pump base with a pump chamber and an output port in the top surface of the pump base. A riser tube extends from the outlet and terminates at a launder having a first end juxtaposed the riser tube, an open top, and a bottom having a launder opening. This structure enables the movement of molten metal out of a vessel with relatively little turbulence.
F04D 7/06 - Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type the fluids being hot or corrosive, e.g. liquid metal
40.
Tensioned support shaft and other molten metal devices
A vertical member, which is preferably a support post used in a molten metal pump, includes a ceramic tube and tensioning structures to add a compressive load to the tube along its longitudinal axis. This makes the tube less prone to breakage. A device, such as a pump, used in a molten metal bath includes one or more of such vertical members.
F04D 7/06 - Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type the fluids being hot or corrosive, e.g. liquid metal
A transfer pump system has a pump base with a pump chamber, tangential discharge and an outlet. A riser tube extends from the outlet and terminates at a launder in order to move molten metal out of a vessel with relatively little turbulence. A riser tube for use in the system has a proximal end configured to be connected to the outlet and a distal end that terminates at or above the launder.
F04D 7/06 - Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type the fluids being hot or corrosive, e.g. liquid metal
B22D 45/00 - Equipment for casting, not otherwise provided for
A molten metal rotor receives and retains an end of a molten metal rotor shaft. The rotor shaft has one or more projections at the end received in the rotor. The rotor has an inner cavity, a top surface with an opening leading to the inner cavity, and at least one abutment. The opening includes one or more portions for allowing each projection to pass through the opening and into the inner cavity. The rotor and/or shaft are then rotated so at least one of the outwardly-extending projections is under the top surface of the rotor and is against an abutment. A molten metal pump, rotary degasser scrap melter or other device used in molten metal may utilize a rotor/shaft combination as disclosed herein.
F04D 7/06 - Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type the fluids being hot or corrosive, e.g. liquid metal
F27D 3/14 - Charging or discharging liquid or molten material
C22B 7/00 - Working-up raw materials other than ores, e.g. scrap, to produce non-ferrous metals or compounds thereof
A transfer pump system has a pump base with a pump chamber, tangential discharge and an outlet. A riser tube extends from the outlet and terminates at a launder in order to move molten metal out of a vessel with relatively little turbulence. A riser tube for use in the system has a proximal end configured to be connected to the outlet and a distal end that terminates at or above the launder.
F04D 7/06 - Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type the fluids being hot or corrosive, e.g. liquid metal
B22D 45/00 - Equipment for casting, not otherwise provided for
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.
Embodiments of the invention are directed to a rotor for a molten metal pump and a molten metal pump including the rotor. The rotor has a main body and a top comprised of a material that is at least twice as hard as the main body. The top, among other things, may form a first portion of each rotor blade wherein the first portion directs molten metal into a pump chamber or other structure in which the rotor is mounted.
F04D 7/06 - Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type the fluids being hot or corrosive, e.g. liquid metal
B22D 17/30 - Accessories for supplying molten metal, e.g. in rations
F27D 3/00 - ChargingDischargingManipulation of charge
46.
Transferring molten metal from one structure to another
A system and method for transferring molten metal from a vessel and into one or more of a ladle, ingot mold, launder, feed die cast machine or other structure is disclosed. The system includes at least a vessel for containing molten metal, an overflow (or dividing) wall, and a device or structure, such as a molten metal pump, for generating a stream of molten metal. The dividing wall divides the vessel into a first chamber and a second chamber, wherein part of the second chamber has a height H2. The device for generating a stream of molten metal, which is preferably a molten metal pump, is preferably positioned in the first chamber. When the device operates, it generates a stream of molten metal from the first chamber and into the second chamber. When the level of molten metal in the second chamber exceeds H2, molten metal flows out of the vessel and into another structure, such as into one or more ladles and/or one or more launders.
A vertical member, which is preferably a support post used in a molten metal pump, includes a ceramic tube and tensioning structures to add a compressive load to the tube along its longitudinal axis. This makes the tube less prone to breakage. A device, such as a pump, used in a molten metal bath includes one or more of such vertical members.
F04D 7/06 - Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type the fluids being hot or corrosive, e.g. liquid metal
F04D 29/62 - MountingAssemblingDisassembling of radial or helico-centrifugal pumps
Aspects of the invention relate to a rotor for transferring molten metal. A powered device, such as a molten metal pump, which may be inside of a transfer chamber, includes a multi-stage rotor to move molten metal within a vessel. The molten metal may be moved out of the vessel and into another structure, which could be another vessel or a launder. The multi-stage rotor may have multiple blades with each blade having multiple surfaces.
Disclosed are degassers, couplings, impeller shafts and impellers for use in molten metal. One such coupling transfers gas into an impeller shaft, the coupling having a smooth, tapered internal surface to align with a corresponding surface on the impeller shaft and help prevent gas leakage and to assist in preventing damage to the impeller shaft. Improved impellers for shearing and mixing gas are also disclosed, as is a degasser including one or more of these components.
F16D 1/108 - Quick-acting couplings in which the parts are connected by simply bringing them together axially having retaining means rotating with the coupling and acting by interengaging parts, i.e. positive coupling
F27D 3/16 - Introducing a fluid jet or current into the charge
A system for removing molten metal from a vessel is disclosed. The system includes a vessel having a first section and a second section and a pump positioned in the first section of the vessel. As the pump operates it moves molten metal through a pump discharge and through an opening into the second section of the vessel, where the molten metal reaches a vessel outlet and exits the vessel. The pump discharge is preferably formed at an angle to the vessel outlet. The outlet may be attached to a launder.
The invention relates to a device for heating molten metal by the use of a heater that can be immersed into the molten metal. This immersion heater includes an outer cover formed of one or more materials resistant to the molten metal in which the immersion heater is to be used, and a heating element inside of the outer cover, where the heating element is protected from contacting the molten metal.
F27B 3/08 - Hearth-type furnaces, e.g. of reverberatory typeElectric arc furnaces heated electrically, e.g. electric arc furnaces, with or without any other source of heat
F27B 3/10 - Details, accessories or equipment, e.g. dust-collectors, specially adapted for hearth-type furnaces
A transportable vessel that is not connected to a reverbatory furnace and can be moved to different locations. The vessel includes a transfer conduit. 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. The molten metal can be transferred out of the transportable vessel and into another structure without the need to tip or tilt the transportable vessel.
A method for transporting molten metal from one location to another. A transportable vessel that is not part of a reverbatory furnace, and that can be moved to different locations, has molten metal placed therein. The transportable vessel is then moved to a different location. A pump inside of the transportable vessel is then operated to move molten metal out of the transportable vessel.
A transportable vessel for use in transporting molten metal, wherein the transportable vessel is not part of a reverbatory furnace and can be moved to different locations. 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, where the molten metal can move into another structure 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.
A system for removing molten metal from a vessel is disclosed. The system includes a pump and a refractory casing that houses the pump. As the pump operates it moves molten metal upward through an uptake section of the casing until it reaches an outlet wherein it exits the vessel. The outlet may be attached to a launder. Another system uses a wall to divide a cavity of the chamber into two portions. The wall has an opening and a pump pumps molten metal from a first portion into a second portion until the level in the second portion reaches an outlet and exits the vessel.
A system for adding gas to and transferring molten metal from a vessel and into one or more of a ladle, ingot mold, launder, feed die cast machine or other structure is disclosed. The system includes at least a vessel for containing molten metal, an overflow (or dividing) wall, a device or structure, such as a molten metal pump, for generating a stream of molten metal, and one or more gas-release devices.
Embodiments of the invention are directed to a rotor for use in molten metal and devices including the rotor. The rotor has a rotor body and blades, wherein each blade includes a tip that is at least twice as hard as the rotor body.
F04D 7/06 - Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type the fluids being hot or corrosive, e.g. liquid metal
A system for removing molten metal from a vessel is disclosed. The system includes a pump and a refractory casing that houses the pump. As the pump operates it moves molten metal upward through an uptake section of the casing until it reaches an outlet wherein it exits the vessel. The outlet may be attached to a launder. Another system uses a wall to divide a cavity of the chamber into two portions. The wall has an opening and a pump pumps molten metal from a first portion into a second portion until the level in the second portion reaches an outlet and exits the 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 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 molten metal rotor receives and retains an end of a molten metal rotor shaft. The rotor shaft has one or more projections at the end received in the rotor. The rotor has an inner cavity, a top surface with an opening leading to the inner cavity, and at least one abutment. The opening includes one or more portions for allowing each projection to pass through the opening and into the inner cavity. The rotor and/or shaft are then rotated so at least one of the outwardly-extending projections is under the top surface of the rotor and is against an abutment. A molten metal pump, rotary degasser scrap melter or other device used in molten metal may utilize a rotor/shaft combination as disclosed herein.
F01D 25/00 - Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
F04D 7/06 - Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type the fluids being hot or corrosive, e.g. liquid metal
A coupling has an opening and a protrusion extending downward from the opening. The protrusion has threads that are preferably positioned outside of the opening. A rotor shaft that connects to the coupling has an internal bore with threads that receives and retains the protrusion, such as by a threaded connection between the two, so the protrusion applies driving force to the shaft.
F04D 29/044 - Arrangements for joining or assembling shafts
F04D 7/06 - Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type the fluids being hot or corrosive, e.g. liquid metal
Disclosed are degassers, couplings, impeller shafts and impellers for use in molten metal. One such coupling transfers gas into an impeller shaft, the coupling having a smooth, tapered internal surface to align with a corresponding surface on the impeller shaft and help prevent gas leakage and to assist in preventing damage to the impeller shaft. Improved impellers for shearing and mixing gas are also disclosed, as is a degasser including one or more of these components.
F16D 1/108 - Quick-acting couplings in which the parts are connected by simply bringing them together axially having retaining means rotating with the coupling and acting by interengaging parts, i.e. positive coupling
F27D 3/16 - Introducing a fluid jet or current into the charge
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.
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.
The invention relates to a device for heating molten metal by the use of a heater that can be immersed into the molten metal. This immersion heater includes an outer cover formed of one or more materials resistant to the molten metal in which the immersion heater is to be used, and a heating element inside of the outer cover, where the heating element is protected from contacting the molten metal.
A system for transferring molten metal from a vessel and into one or more of a ladle, ingot mold, launder, feed die cast machine or other structure is disclosed. The system includes at least a vessel for containing molten metal, an overflow (or dividing) wall, and a device or structure, such as a molten metal pump, for generating a stream of molten metal. The dividing wall divides the vessel into a first chamber and a second chamber, wherein part of the second chamber has a height H2. The device for generating a stream of molten metal, which is preferably a molten metal pump, is preferably positioned in the first chamber. When the device operates, it generates a stream of molten metal from the first chamber and into the second chamber. When the level of molten metal in the second chamber exceeds H2, molten metal flows out of the vessel and into another structure, such as into one or more ladles and/or one or more launders.
A system and method for transferring molten metal from a vessel and into a launder is disclosed. The system includes at least a vessel for containing molten metal, an overflow (or dividing) wall, and a device or structure, such as a molten metal pump, for generating a stream of molten metal. The dividing wall divides the vessel into a first chamber and a second chamber, wherein part of the second chamber has a height H2. The device for generating a stream of molten metal, which is preferably a molten metal pump, is preferably positioned in the first chamber. When the device operates, it generates a stream of molten metal from the first chamber and into the second chamber. When the level of molten metal in the second chamber exceeds H2, molten metal flows out of the vessel and into the launder. The launder has a horizontal angle of between 0° and −10° to help prevent dross from being pulled by gravity into downstream vessels.
A system for applying tension to a component for use in molten metal processing. Preferably, the component includes an outer core and at least one tension rod positioned partially within the outer core. The component is preferably elongated, such as a support post or an impeller shaft. The tension rod applies compression to the outer cover, which makes the outer cover more resistant to breakage if it strikes, or is stricken by, an object.
C04B 37/02 - Joining burned ceramic articles with other burned ceramic articles or other articles by heating with metallic articles
F04D 7/06 - Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type the fluids being hot or corrosive, e.g. liquid metal
F04D 29/62 - MountingAssemblingDisassembling of radial or helico-centrifugal pumps
A system for applying tension to a component for use in molten metal processing. Preferably, the component includes an outer core and at least one tension rod positioned partially within the outer core. The component is preferably elongated, such as a support post or an impeller shaft. The tension rod applies compression to the outer cover, which makes the outer cover more resistant to breakage if it strikes, or is stricken by, an object.
C04B 37/02 - Joining burned ceramic articles with other burned ceramic articles or other articles by heating with metallic articles
F04D 7/06 - Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type the fluids being hot or corrosive, e.g. liquid metal
F04D 29/62 - MountingAssemblingDisassembling of radial or helico-centrifugal pumps
A system for applying tension to a component for use in molten metal processing. Preferably, the component includes an outer core and at least one tension rod positioned partially within the outer core. The component is preferably elongated, such as a support post or an impeller shaft. The tension rod applies compression to the outer cover, which makes the outer cover more resistant to breakage if it strikes, or is stricken by, an object.
F04D 7/06 - Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type the fluids being hot or corrosive, e.g. liquid metal
A system for applying tension to a component for use in molten metal processing. Preferably, the component includes an outer core and at least one tension rod positioned partially within the outer core. The component is preferably elongated, such as a support post or an impeller shaft. The tension rod applies compression to the outer cover, which makes the outer cover more resistant to breakage if it strikes, or is stricken by, an object.
C04B 37/02 - Joining burned ceramic articles with other burned ceramic articles or other articles by heating with metallic articles
F04D 7/06 - Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type the fluids being hot or corrosive, e.g. liquid metal
F04D 29/62 - MountingAssemblingDisassembling of radial or helico-centrifugal pumps
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.
A system for removing molten metal from a vessel is disclosed. The system includes a pump and a refractory casing that houses the pump. As the pump operates it moves molten metal upward through an uptake section of the casing until it reaches an outlet wherein it exits the vessel. The outlet may be attached to a launder. Another system uses a wall to divide a cavity of the chamber into two portions. The wall has an opening and a pump pumps molten metal from a first portion into a second portion until the level in the second portion reaches an outlet and exits the vessel.
Embodiments of the invention are directed to a rotor for a molten metal pump and a molten metal pump including the rotor. The rotor has a main body and a top comprised of a material that is at least twice as hard as the main body. The top, among other things, may form a first portion of each rotor blade wherein the first portion directs molten metal into a pump chamber or other structure in which the rotor is mounted.
F04D 7/06 - Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type the fluids being hot or corrosive, e.g. liquid metal
B22D 17/30 - Accessories for supplying molten metal, e.g. in rations
F27D 3/00 - ChargingDischargingManipulation of charge
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.
A pump having a motor, a pump base with a pump chamber, a tangential discharge and an outlet in the pump base. A riser tube extends upward from the outlet and terminates at or above a launder in order to move molten metal out of a vessel with relatively little turbulence.
F04D 7/06 - Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type the fluids being hot or corrosive, e.g. liquid metal
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 are degassers, couplings, impeller shafts and impellers for use in molten metal. One such coupling transfers gas into an impeller shaft, the coupling having a smooth, tapered internal surface to align with a corresponding surface on the impeller shaft and help prevent gas leakage and to assist in preventing damage to the impeller shaft. Improved impellers for shearing and mixing gas are also disclosed, as is a degasser including one or more of these components.
F16D 1/108 - Quick-acting couplings in which the parts are connected by simply bringing them together axially having retaining means rotating with the coupling and acting by interengaging parts, i.e. positive coupling
F27D 3/16 - Introducing a fluid jet or current into the charge
Disclosed, among other things, is a transfer chamber constructed inside of or next to a vessel used to retain and degas molten metal. The transfer chamber is in fluid communication with the vessel so molten metal from the vessel is pulled through the vessel by the pump as it is degassed. This helps maintain a generally constant flow of molten metal through the degassing vessel. Other aspects relate to a system and method for efficiently performing maintenance on components positioned in a 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.
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 system for removing molten metal from a vessel is disclosed. The system includes a pump and a refractory casing that houses the pump. As the pump operates it moves molten metal upward through an uptake section of the casing until it reaches an outlet wherein it exits the vessel. The outlet may be attached to a launder. Another system uses a wall to divide a cavity of the chamber into two portions. The wall has an opening and a pump pumps molten metal from a first portion into a second portion until the level in the second portion reaches an outlet and exits the vessel.
A system and method for transferring molten metal from a vessel and into a launder is disclosed. The system includes at least a vessel for containing molten metal, an overflow (or dividing) wall, and a device or structure, such as a molten metal pump, for generating a stream of molten metal. The dividing wall divides the vessel into a first chamber and a second chamber, wherein part of the second chamber has a height H2. The device for generating a stream of molten metal, which is preferably a molten metal pump, is preferably positioned in the first chamber. When the device operates, it generates a stream of molten metal from the first chamber and into the second chamber. When the level of molten metal in the second chamber exceeds H2, molten metal flows out of the vessel and into the launder. The launder has a horizontal angle of between 0° and −10° to help prevent dross from being pulled by gravity into downstream vessels.
A system for applying tension to a component for use in molten metal processing. Preferably, the component includes an outer core and at least one tension rod positioned partially within the outer core. The component is preferably elongated, such as a support post or an impeller shaft. The tension rod applies compression to the outer cover, which makes the outer cover more resistant to breakage if it strikes, or is stricken by, an object.
F04D 7/06 - Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type the fluids being hot or corrosive, e.g. liquid metal
A system for adding gas to and transferring molten metal from a vessel and into one or more of a ladle, ingot mold, launder, feed die cast machine or other structure is disclosed. The system includes at least a vessel for containing molten metal, an overflow (or dividing) wall, a device or structure, such as a molten metal pump, for generating a stream of molten metal, and one or more gas-release devices.
A system for transferring molten metal from a vessel and into one or more of a ladle, ingot mold, launder, feed die cast machine or other structure is disclosed. The system includes at least a vessel for containing molten metal, an overflow (or dividing) wall, and a device or structure, such as a molten metal pump, for generating a stream of molten metal. The dividing wall divides the vessel into a first chamber and a second chamber, wherein part of the second chamber has a height H2. The device for generating a stream of molten metal, which is preferably a molten metal pump, is preferably positioned in the first chamber. When the device operates, it generates a stream of molten metal from the first chamber and into the second chamber. When the level of molten metal in the second chamber exceeds H2, molten metal flows out of the vessel and into another structure, such as into one or more ladles and/or one or more launders.
An insert and system for removing molten metal from a vessel is disclosed. The insert defines an enclosed cavity, and includes a first opening in its side through which molten metal can enter the cavity, and a second opening at its top through which molten metal can exit the cavity. A trough at the top of the insert directs molten metal exiting the second opening out of the vessel. The system includes the insert and a molten metal pump that forces molten metal through the first opening and into the cavity.
The invention relates to a device for heating molten metal by the use of a heater that can be immersed into the molten metal. This immersion heater includes an outer cover formed of one or more materials resistant to the molten metal in which the immersion heater is to be used, and a heating element inside of the outer cover, where the heating element is protected from contacting the molten metal.
A pump for transferring molten metal includes an intake tube, a motor, a rotor positioned at least partially within the bottom end of the intake tube, a rotor shaft positioned at least partially in the intake tube, the rotor shaft having a first end attached to the motor and a second end attached to the rotor. An overflow conduit is attached to the intake tube. The pump does not include a pump housing and preferably does not include a superstructure, so it is relatively small, light and portable. In use, the motor drives the rotor shaft and rotor to generate a flow of molten metal upward into the intake tube and into the overflow conduit where it is discharged.
F04D 7/06 - Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type the fluids being hot or corrosive, e.g. liquid metal
F04D 13/08 - Units comprising pumps and their driving means the pump being electrically driven for submerged use
A system for adding gas to and transferring molten metal from a vessel and into one or more of a ladle, ingot mold, launder, feed die cast machine or other structure is disclosed. The system includes at least a vessel for containing molten metal, an overflow (or dividing) wall, a device or structure, such as a molten metal pump, for generating a stream of molten metal, and one or more gas-release devices.
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.
The invention relates to filtering molten metal and more particularly, to a pump, pump base and filter for filtering molten metal, wherein the filter is preferably comprised of a ceramic foam material. The ceramic foam material may be buoyant in molten aluminum. In one embodiment, a molten metal pump includes a pump base configured to receive the molten metal pump filter without using cement.
A scrap submergence vessel for melting scrap metal is disclosed. The vessel comprises a front wall comprising an inlet, a back wall (opposite the front wall) comprising an outlet, and a flow direction member that causes molten metal flowing into the inlet to be directed at least partially upward against a portion of the back wall. The movement of molten metal through the vessel creates a downward pull that draws metal scrap placed above or within the vessel downward into the molten metal bath where it melts.
A system for applying tension to a component for use in molten metal processing. Preferably, the component includes an outer core and at least one tension rod positioned partially within the outer core. The component is preferably elongated, such as a support post or an impeller shaft. The tension rod applies compression to the outer cover, which makes the outer cover more resistant to breakage if it strikes, or is stricken by, an object.
F04D 7/06 - Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type the fluids being hot or corrosive, e.g. liquid metal
99.
Transferring molten metal from one structure to another
A system for transferring molten metal from a vessel and into one or more of a ladle, ingot mold, launder, feed die cast machine or other structure is disclosed. The system includes at least a vessel for containing molten metal, an overflow (or dividing) wall, and a device or structure, such as a molten metal pump, for generating a stream of molten metal. The dividing wall divides the vessel into a first chamber and a second chamber, wherein part of the second chamber has a height H2. The device for generating a stream of molten metal, which is preferably a molten metal pump, is preferably positioned in the first chamber. When the device operates, it generates a stream of molten metal from the first chamber and into the second chamber. When the level of molten metal in the second chamber exceeds H2, molten metal flows out of the vessel and into another structure, such as into one or more ladles and/or one or more launders.
An improved post clamp for a molten metal pump includes a support post clamp that supports the weight of a pump superstructure on the top of the support posts. The clamp preferably includes (a) a bottom flange for connecting to the pump superstructure, (b) a cavity for receiving an end of a support post, wherein the end has a top surface, and (c) a top flange for being positioned above the top surface. In operation the top flange rests on the top surface of the support post thereby supporting at least part of the weight of the superstructure. It is preferred that a plurality of support posts and post clamps according to the invention be used with a molten metal pump wherein the top surface of each support post supports some of the weight of the superstructure. Also disclosed are novel support posts that may be used with the post clamp, and a pump in which the post clamp and/or support posts may be used.
patents