By Movement Of Mold, Charger, Or Part Thereof Patents (Class 164/136)
  • Patent number: 5730203
    Abstract: A cylindrical element (14) with a through-going passage (15) is retained in the mold in such a manner that a part of the element (14) protrudes from the outside of the mold, and so that the passage (15) opens into a part of the runner (8) of the mold, the internal terminal surface of element (14) lying opposite a plane surface (16) in the runner (8). During casting, the nozzle (13) of a casting device is brought into tight-fitting abutment against the outer end of the element, and the molten metal alloy is cast into the mold through the nozzle (13), the passage (15) in the element (14) and the runner (8) of the mold.
    Type: Grant
    Filed: November 21, 1996
    Date of Patent: March 24, 1998
    Assignee: Georg Fischer Disa A/S
    Inventor: Vagn Mogensen
  • Patent number: 5725042
    Abstract: The segregation in the hydrogen-absorbing alloy is decreased by a centrifugal casting which is devised in the present invention so that: a melt fed to the bottom portion of a cylindrical rotary mold solidifies during one rotation of the mold; and, the average depositing speed of melt is from approximately 0.005 to 0.1 cm/second.
    Type: Grant
    Filed: December 24, 1996
    Date of Patent: March 10, 1998
    Assignee: Showa Denko K.K.
    Inventors: Yoichi Hirose, Shiro Sasaki, Hiroshi Hasegawa, Uremu Hosono, Masahide Utsunomiya
  • Patent number: 5704413
    Abstract: A molten metal is poured into and stored in a hopper in a rotary-mold gravity casting process, so that a small amount of the molten metal is allowed to flow out of the hopper into a runner to previously fill up the runner. A casting mold is rotated from this state, thereby causing the molten metal to be filled from the hopper into a cavity by a difference in height generated between the molten metal level in the hopper and the molten metal level in the casting mold. Thus, when the molten metal, once stored in the hopper, is filled into the cavity in the casting mold by rotating the casting mold, the inclusion of air can be prevented from being produced due to ruffling of the molten metal in the cavity.
    Type: Grant
    Filed: March 24, 1997
    Date of Patent: January 6, 1998
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Norimasa Takasaki, Takashi Inagaki, Masayoshi Ohashi, Ryuichi Hanaoka
  • Patent number: 5690160
    Abstract: A sand mould has a filling inlet defined by a solid insert (7). The insert provides a flat outer face for sealing and subsequently heat exchanging sliding contact with a sealing face of a chill plate (11). The mould is filled through the insert and then closed by means of the chill plate.
    Type: Grant
    Filed: January 16, 1996
    Date of Patent: November 25, 1997
    Assignee: Alloy Technologies Limited
    Inventors: Thomas Leonard Sutton, John Campbell, Michael Joseph Flynn, Gary McBain
  • Patent number: 5636680
    Abstract: After casting a mould (1) through a bottom inlet (2) with liquid metal (4) under pressure through a mouthpiece (5) of a casting device, the inlet (2) is closed by a closing element (8) being pressed by the mouthpiece (5) into sealing abutment against a seat in the mould (1). Subsequently, an inert gas is introduced into a passage (6) in the casting mouthpiece from a source (9) through a pressure reducing valve (11), a shut-off valve (12) which is capable of being selectively opened, a gas chamber (13) and a bore (14) in the mouthpiece (5). The inert gas is introduced such that the casting device can suck the liquid metal (4) from the closing element (8) a distance backwards in the mouthpiece (5). The effect of this is that oxidation of the liquid metal in the mouthpiece (5) or in the nozzle (7) is avoided, and a faster suction of the metal back from the closing element (8) and the nozzle (7) into the passage (6) of the mouthpiece (5), is achieved.
    Type: Grant
    Filed: June 28, 1995
    Date of Patent: June 10, 1997
    Assignee: Dansk Industri Syndikat A/S
    Inventors: Vagn Mogensen, Steen Pedersen
  • Patent number: 5634514
    Abstract: The firing and/or casting kiln has a containment casing which internally forms a treatment chamber, a part holder which is movably mounted inside the treatment chamber, an opening for access to the treatment chamber, and a conditioning system for producing a vacuum and introducing inert gas into the treatment chamber.
    Type: Grant
    Filed: December 5, 1995
    Date of Patent: June 3, 1997
    Assignee: Peacock Limited L.C.
    Inventor: Alberto Gagliano
  • Patent number: 5626180
    Abstract: The invention relates to a process and devices for casting components in metal alloys on the tilt casting principle in which a quantity of melt metered for casting is spread over a large gate cross section without turbulence from a melt container of the mould (30) into the mould (31) by rotating the casting device. To prevent the formation of oxide and weak structural points, the melt is taken from a metering furnace under a protective gas in a melt container connected to the mould and taken thence into the mould also under a protective gas. The melt hardens there under increased gas pressure on the feeder region of the casting, whereby its properties such as fine-grained, dense structure, high stability under load and accurately dimensioned surfaces are considerably improved.
    Type: Grant
    Filed: March 16, 1995
    Date of Patent: May 6, 1997
    Inventors: Friedhelm Kahn, Joachim Kahn
  • Patent number: 5584334
    Abstract: A method in particular, comprises the steps of: (a) preparing a mold having a sprue leading to a substantially horizontally oriented runner, at least one riser extending from the runner, and walls defining a mold cavity in communication with the riser; (b) providing a shallow reaction chamber in the runner containing grain refining inoculant solids therein, the inoculant having a surface exposed substantially tangentially to the flow of molten metal through the runner; (c) pouring a charge of molten aluminum into the sprue with a sufficient pressure head to fill the cavity, the flow being substantially laminar through the runner; and (d) inverting the mold substantially immediately after mold filling and prior to solidification of the metal in the mold cavity.
    Type: Grant
    Filed: December 6, 1994
    Date of Patent: December 17, 1996
    Assignee: Ford Motor Company
    Inventors: James L. Oswald, Paul M. LeTarte, Paul A. Ballas, David L. Mitchell
  • Patent number: 5524700
    Abstract: A supply vessel containing a molten bath has a discharge opening which is controlled by a valve. The discharge opening is located in a vertical plane and has a horizontal axis. The valve includes a set of valve plates having through openings for the passage of molten material. The valve plates are rotatable relative to one another in order to bring the through openings into and out of register and thus open and close the valve. One of the valve plates sits adjacent the discharge opening and is stationary while another of the valve plates is remote from the discharge opening and is freely rotatable. A mold having an inlet, a casting cavity and feeders between the inlet and casting cavity is brought into engagement with the freely rotatable valve plate. The mold is positioned with the casting cavity below the upper surface of the molten bath and with the feeders below the casting cavity. The valve is opened and the casting cavity filled with molten material via the mold inlet and the feeders.
    Type: Grant
    Filed: February 15, 1994
    Date of Patent: June 11, 1996
    Assignee: EB Bruhl Aluminiumtechnik GmbH
    Inventor: Rolf Gosch
  • Patent number: 5492165
    Abstract: The machine for filling moulds with metal to be cast, in which a casing is provided comprises a fixed body and a mobile body. The mobile body is driven by a cylinder. The casing can be provided with a vacuum chamber which when closed houses, with the ability to rotate, a sand mould clamped in a central turning body of a support which can be moved by another cylinder towards a lower injector which supplies the mould with the appropriate quantity of cast metal from a lower metering store. A pressure gas is inserted into the metering store through a connection. The metering store receives the cast metal from a larger tank with the assistance of a seal controlled by a level sensor. The machine also includes a metering ladle positioned between a filling plate and the mould itself. The metering ladle has heating elements.
    Type: Grant
    Filed: November 22, 1993
    Date of Patent: February 20, 1996
    Inventor: Agustin A. Erana
  • Patent number: 5477906
    Abstract: A mould assembly comprising mould segments of generally non-thermally conductive material which define a mould cavity is upwardly filled with liquid metal through at least one in-gate. A thermal extraction member of a high thermally conductive material contacts a portion of the mould cavity through which heat is extracted rapidly to establish positive thermal gradients in the casting and thereby promote directional solidification. The mould assembly is also provided with a seal to selectively isolate the mould assembly from the liquid metal source to allow the mould assembly to be removed from the casting station and transferred to the cooling station, providing a more efficient use of the casting station. In addition, once a shell has solidified then the mould segments and metal contained therein can be transferred to the cooling station.
    Type: Grant
    Filed: December 23, 1993
    Date of Patent: December 26, 1995
    Assignee: Comalco Aluminum Limited
    Inventors: Rodney A. Legge, John A. Eady, Rodney E. Proposch, Joseph R. Ponteri
  • Patent number: 5465777
    Abstract: Disclosed is a contact pouring vessel and method for pouring molten metal directly into a mold. A pouring vessel holds the molten metal in a molten state. A nozzle within the pouring vessel and having an orifice enables the molten metal to pour from the pouring vessel. A stopper rod is raised or lowered to either seal the orifice or permit the molten metal to flow out the pouring vessel. A rotating cutter cleans the bottom of the nozzle each time a mold is filled to prohibit an unwanted buildup on the nozzle. Four hydraulic cylinders and a hydraulic system are used to controllably raise and lower the pouring vessel. The pouring vessel is raised to accommodate the positioning of mold adjacent the nozzle and lowered to position the nozzle flush with the mold.
    Type: Grant
    Filed: May 18, 1994
    Date of Patent: November 14, 1995
    Assignee: The Budd Company
    Inventor: Donald G. Brunner
  • Patent number: 5388633
    Abstract: An automatic ladling system is described for delivering a molten metal to the mold or die of a molding or casting machine. The ladling system comprises a programmable logic controller (PLC) for monitoring and controlling the sequential delivery of shots of a precise quantity of molten metal from a furnace or holding pot to a shot delivery apparatus of the casting machine. In the preferred system, the PLC also monitors and/or controls the temperature of the molten metal in the holding pot, the temperature of the molten metal in a metal transfer system, the operation of a pump for pumping molten metal from the holding pot to the shot delivery apparatus, the level of molten metal in the pot, and the operation of the casting machine.
    Type: Grant
    Filed: April 15, 1993
    Date of Patent: February 14, 1995
    Assignee: The Dow Chemical Company
    Inventors: William E. Mercer, II, Carl F. Baker, Harvey L. King
  • Patent number: 5381855
    Abstract: The pouring ladle can not only be tilted by a tilting drive and a cable around a permanent tilting axis in order to pour the molten metal in a mould, respectively to interrupt the pouring process, but the tilting axis can be lifted and lowered by a determined value by a lifting drive. By lifting and lowering the tilting axis, the tilting motion of the pouring ladle takes place approximately in the center of gravity of the molten metal. This permits to avoid compensating streams and wave motions of the molten metal when the pouring ladle tilts forward and backward and more definite and reliable processes are achieved, capable to be controlled, at the start of pouring and at the time of terminating the pouring. The lifting drive and the tilting drive can be utilized for further lifting the pouring ladle in order to advance the pouring ladle further toward the center of the mould at the first pouring process under holding a determined distance of security from the mould.
    Type: Grant
    Filed: October 4, 1993
    Date of Patent: January 17, 1995
    Assignee: Maschinenfabrik & Eisengiesserei Ed. Mezger AG
    Inventor: Fritz Mezger
  • Patent number: 5335711
    Abstract: Cast components having reduced porosity levels are produced by pouring a molten metal into a mould which is in a first chamber, and withdrawing the filled mould into a second chamber. The second chamber is then isolated from the first chamber with regard to pressure, and the second chamber is then pressurized with a fluid up to a maximum pressure of 7 MPa for at least part of the time required for solidification of the metal in the mould. The pressure is preferably applied within forty seconds from the finish of pouring of the molten metal, and more preferably within twenty seconds. The still molten state of the metal permits the use of a relatively low pressure to reduce the porosity levels.
    Type: Grant
    Filed: April 29, 1992
    Date of Patent: August 9, 1994
    Assignee: AE PLC
    Inventor: Brian Paine
  • Patent number: 5315091
    Abstract: An electrical resistance heated oven is used to heat a crucible to melt a sample and to simultaneously heat a casting dish into which the molten sample can be poured. The oven is cooled with the crucible and casting dish within the oven in order to prepare a sample bead for analysis. In another embodiment of the invention the sample is again melted in a crucible and after melting the crucible is moved out of the oven and turned to pour the molten sample into an acid solution positioned external to the oven. The crucible and sample can be moved while in the oven to mix the sample. The method of preparing an analytical sample using the electrical resistance heated oven is also disclosed.
    Type: Grant
    Filed: March 2, 1993
    Date of Patent: May 24, 1994
    Assignee: Leco Corporation
    Inventors: Larry S. O'Brien, Gordon C. Ford, Peter M. Willis, Robert S. Tate
  • Patent number: 5232044
    Abstract: An apparatus for casting an exact quantity of molten lead for making battery plate poles provided with at least one scooping receptacle mounted on a pivotable shaft movable between a position in which the receptacle is immersed in molten lead provided in a smelting vessel and a position adjacent the mold where the receptacle may be tilted for casting by pivoting the shaft.
    Type: Grant
    Filed: October 3, 1991
    Date of Patent: August 3, 1993
    Assignee: Akkumulatorenfabrik Dr. Leopold Jungfer
    Inventor: Manfred Malle
  • Patent number: 5176198
    Abstract: Molten metal (15), in particular molten aluminum or aluminum alloy, is fed to the adjustable roll gap (42,44) between two casting rolls (42,44) of the horizontal strip caster by means of a nozzle which is horizontally displaceable and vertically adjustable on a carriage. The feeding of the nozzle is interrupted to exchange or clean the latter and the carriage is removed from and returned to the region of the casting rolls. The metal feed from a stationary launder into a mobile launder and/or into a molten metal distribution trough of the nozzle is continued even during interruption of the casting. A stationary launder having an outflow in the region of the end face which can be closed by an adjustable plug is arranged above a mobile launder having a molten metal distribution trough for the nozzle which is isolated via an adjustable aperture, this mobile launder being arranged on a carriage, in a manner such as to be longitudinally displaceable or longitudinally displaceable and laterally swivellable.
    Type: Grant
    Filed: February 19, 1991
    Date of Patent: January 5, 1993
    Assignee: Lauener Engineering Ltd.
    Inventors: Bruno Frischknecht, Rudolf Roder
  • Patent number: 5173237
    Abstract: A multiple metallic core assembly for use in production of a plastic injection-molded component is formed by injecting molten metal alloy into a core die at a fill stage of an indexing system, indexing the core die through a cooling stage to an unloading stage, and removing the core from the core die and inserting the core in one of a plurality of locations of the core assembly. Individual cores are continued to be formed as discussed above until all the locations of the core assembly are filled, and the core assembly is complete. Therefore, the core assembly is removed and transported to a plastic molding machine to produce the plastic component. Then, the core assembly is melted out from the plastic component in hot oil, and the molten metal alloy produced thereby is returned to a molten metal alloy tank.
    Type: Grant
    Filed: January 24, 1990
    Date of Patent: December 22, 1992
    Assignee: Electrovert Ltd.
    Inventor: Thomas F. Kidd
  • Patent number: 5170835
    Abstract: A pot of molten lead is situated adjacent to a mold chamber containing a mold. A displacement piston is lowered into the pot to displace lead into the mold chamber to fill the mold. The displacement piston them allows the lead to flow back into the pot, leaving the lead in the mold. A battery handler then lowers a battery into the mold to cast lead straps onto the lugs of the battery. Water is forced through a passageway in the mold chamber to cool the lead in the mold. Air is then forced through the passageway to remove the water. The battery handler then removes the battery from the mold and a heating unit begins to preheat the mold chamber for the next battery.
    Type: Grant
    Filed: February 8, 1991
    Date of Patent: December 15, 1992
    Assignee: Eberle Equipment Inc.
    Inventors: Kelly L. Eberle, William K. Eberle, Terry R. Eberle
  • Patent number: 5163500
    Abstract: A metallurgically improved metal casting (10) is made with increased productivity, wherein molten metal is quiescently fed upwards into a molding chamber (14) which is then inverted. An assembly of refractory cores (12) is used that defines the molding chamber (14) with riser channels (16). A metal entrance (18) to the molding chamber (14) through a mold side wall (20) requires feeding molten metal against gravity to fill the molding chamber (14), and quiescently pressure feeding molten metal through a metal launder (26) to fill the molding chamber (14) and the riser channels (16). A mold/nozzle connection between the metal launder (26) and the source of molten metal delivered under pressure is rotationally flexible and axially compliant. The feeding of molten metal is interrupted and the assembly is rotated about an axis passing through the mold/nozzle connection (28) to invert the assembly while maintaining the mold/nozzle connection.
    Type: Grant
    Filed: December 13, 1991
    Date of Patent: November 17, 1992
    Assignee: Ford Motor Company
    Inventors: William W. Seaton, Gregory W. Seaton
  • Patent number: 5131452
    Abstract: The volume of melt within the ladle dipper is maintained essentially unchanged in its position relative to the volume of melt remaining in the holding crucible during the ladling operation in order to avoid undesirable turbulence and the formation of foam in the melt.
    Type: Grant
    Filed: August 20, 1990
    Date of Patent: July 21, 1992
    Assignee: Alcan Deutschland GmbH
    Inventors: Georg Bilz, Hans Lammermann, Wilhelm Hertlein, Winfried Grabietz
  • Patent number: 5127467
    Abstract: In a method and apparatus for supplying a molten metal, a supplying operation of the molten metal is started after a molten metal discharge port formed in a lower end portion of a molten metal supply sleeve facing down on a bottom portion of a molten metal supply vessel is positioned right above a plunger chip located at a lower position within an injection sleeve of an injection apparatus. The injection sleeve and the plunger chip are simultaneously lowered in accordance with the supplying operation of the molten metal.
    Type: Grant
    Filed: June 22, 1990
    Date of Patent: July 7, 1992
    Assignee: Ube Industries, Ltd.
    Inventor: Toyoaki Ueno
  • Patent number: 5072772
    Abstract: The invention concerns a method for moulding objects by feeding at least one consistent material into a mould where it solidifies prior to closing the inlet or opening of each runner of a cavity by means of at least one closing device, the gate feeding face of the runner of the cavity in question is closed, and then the molten material contained in the runner is expelled from the mould.
    Type: Grant
    Filed: August 25, 1989
    Date of Patent: December 17, 1991
    Inventor: Siegfried Haehne
  • Patent number: 5056584
    Abstract: A system for pouring molds on a continuously moving conveyor by an automated process has an apparatus positioned over a moving conveyor including a plurality of molds. The apparatus includes a frame adapted to be positioned over the moving conveyor. The apparatus includes a mechanism for moving the frame in a reciprocating forward and reverse direction along a path defined by the conveyor. The apparatus includes a mechanism to pour molten metal into the plurality of molds on the conveyor. The pouring mechanism is associated with the frame such that the pouring mechanism moves at a speed substantially equal to the speed of the conveyor to enable filling of the plurality of molds as the molds continue to move on the conveyor.
    Type: Grant
    Filed: December 7, 1989
    Date of Patent: October 15, 1991
    Assignee: CMI International, Inc.
    Inventor: Williams W. Seaton
  • Patent number: 4969502
    Abstract: Molten metals or alloys are poured into a stationary plate mold from at least one elongated pouring device such that melt overflows the length of the mold. The pouring energy is dissipated by flowing the elongated flow from one stationary device against an energy dissipating plate adjacent the pouring device in proximity to either one of the mold center lines such that the flow forms two balanced streams on the bottom of the mold. Alternatively, an elongated flow is poured from each of two stationary pouring devices positioned in opposing directions along the opposite sidewalls of the mold. Alternatively, the two pouring devices may move from one of the mold center lines towards the sidewalls while pouring molten metal. The pouring energy is dissipated by flowing two of the balanced streams formed on the bottom of the mold towards each other. The dissipation of pouring energy results in the substantial elimination of wave action and flash whereby castings with an even thickness are produced.
    Type: Grant
    Filed: May 11, 1989
    Date of Patent: November 13, 1990
    Assignee: Cominco Ltd.
    Inventors: Eric L. Mawer, Martin Vanderminnen, Robert D. H. Willans
  • Patent number: 4966222
    Abstract: The method consists in that molten metal and slag are obtained in a reservoir and then are poured into a mold and kept there till crystallization of the metal takes place and a shaped casting is produced. Prior to the process of pouring, the mold is moved towards the reservoir so that their upper end faces adjoin each other to form a closed integrated unit, which is turned in a vertical plane to transfer the metal and slag into the mold. The joint of the mold with the reservoir in the process of pouring is tightened by providing a time delay for this process from the moment of covering the joint with a slag layer till the moment of solidification of this layer. In the device for producing the castings, the mold and reservoir are provided with individual drives rotating them in a vertical plane, the drives moving the mold to form a closed integrated unit with the reservoir and rotating this unit in the process of pouring the molten metal and slag into the mold.
    Type: Grant
    Filed: October 5, 1989
    Date of Patent: October 30, 1990
    Inventors: Boris E. Paton, Boris I. Medovar, Jury V. Orlovsky, Vitaly V. Lupan, Vladimir Y. Maidannik, Grigory B. Schupak, Jury Y. Chernyavsky, Alexei G. Bogachenko, Alexandr N. Kozhushko
  • Patent number: 4890665
    Abstract: Molten metal is discharged from a metallurgical vessel through a discharge passage of a sliding closure unit into a continuous casting mold. The molten metal level in the mold is established within a predetermined range by throttling the passage by a sliding plate of the sliding closure unit, during which throttling operation deposits gradually form in the sliding closure unit to restrict the size of the throttle passage and thereby reduce the molten metal level. The molten metal level is maintained within the predetermined range by the controlled opening movement of the sliding plate to compensate for restriction of the throttle passage by the formation of the deposits.
    Type: Grant
    Filed: December 8, 1988
    Date of Patent: January 2, 1990
    Assignee: Metacon AG
    Inventor: Walter Vetterli
  • Patent number: 4832111
    Abstract: Molten metal is poured from a melt container to a mold cavity defined by a molding material wherein the molding material in the region of the runner gate is of a higher density with respect to the rest of the molding material. A pouring lip protruding from the melt container seals in the region of the runner gate for delivering molten metal from the melt container to the mold cavity.
    Type: Grant
    Filed: February 16, 1988
    Date of Patent: May 23, 1989
    Assignee: Georg Fischer AG
    Inventors: Max Riethmann, Herbert Schilling
  • Patent number: 4807688
    Abstract: Metal castings are prepared using rigid closed molds by submerging the mold in a bath of lower temperature molten metal, with removal of the mold from the bath being handled to hold the metal inside the mold, but to allow the excess metal to run off the exterior of the mold without metal freezing thereto which could cause damage or locking-in of the mold.
    Type: Grant
    Filed: May 22, 1987
    Date of Patent: February 28, 1989
    Inventor: Robert H. Beetle
  • Patent number: 4773467
    Abstract: An improved mold includes an upper mold section having a primary distribution system which is connected with a furnace and a lower mold section which is withdrawn from the furnace on a chill plate. A baffle plate is supported from the primary distribution system. The lower mold section includes a secondary distribution system which is connected in fluid communication with the primary distribution system at separable joints. The secondary distribution system is connected in fluid communication with article molds which are disposed in an annular array. During pouring of molten metal, reaction forces are transmitted to the chill plate from the pour cup through a support post and baffle plate. Once the article molds have been filled with molten metal, the chill plate is lowered. The primary distribution system which is connected to the furnace, remains stationary.
    Type: Grant
    Filed: March 6, 1987
    Date of Patent: September 27, 1988
    Assignee: PCC Airfoils, Inc.
    Inventors: Lawrence D. Graham, Richard A. Skelley, Daniel G. Fetsko, Ronald Ardo
  • Patent number: 4766945
    Abstract: A process and apparatus for casting semi-finished metal products in which a molten-metal-proof plunger is disposed at the top of a cavity in a permanent mold. A thin band of metal is attached to the plunger and extends above its top. Inside the metal band on top of the plunger is insulation and on top of that is a barrier to the molten metal. A reservoir of molten metal is created and maintained in a pouring cup over the plunger, and the plunger is caused to descend in the cavity at a controlled rate so that the molten metal enters and fills the cavity above the plunger. Promptly after the plunger reaches the bottom of its stroke, it is reversed to lift the casting and pouring cup at least slightly out of the mold. The shim band, barrier, and insulation are expendable, but the plunger is used again.
    Type: Grant
    Filed: August 15, 1984
    Date of Patent: August 30, 1988
    Inventor: Edmund Q. Sylvester
  • Patent number: 4741382
    Abstract: A process for producing pigs as finished products using molds equipped with at least one spout with a stairway-shaped profile having at least two steps. The molds are filled from a ladle containing molten metal via a movable runner equipped with a handling means. The steps of the spout or spouts during the filling of a mold, and the sudden movement of the runner are observed in order to direct the casting jet outside the mold, while acting on the handling means, as soon as the molten metal spreads over a specified step of the spout.
    Type: Grant
    Filed: January 8, 1987
    Date of Patent: May 3, 1988
    Assignee: ACEC-Heating
    Inventors: Jacques Andre, Raoul Colin
  • Patent number: 4733714
    Abstract: A method of making a casting comprising the steps of, at a casting station, feeding molten metal from a primary source of molten metal into a mould cavity through an ingate below the top of the mould cavity, placing the cavity out of feeding relationship with the primary source by changing the orientation of the cavity relative to the direction of gravity to prevent flow of molten metal from the cavity towards the primary source and to permit of flow of metal from a secondary source to the cavity, the cavity being continuously connected to the primary source during said change of orientation, transferring the mould cavity to a cooling station spaced from the casting station and, at the cooling station, permitting molten metal to flow to the cavity from the secondary source while the metal in the cavity solidifies.
    Type: Grant
    Filed: February 24, 1987
    Date of Patent: March 29, 1988
    Assignee: Cosworth Research & Development Limited
    Inventor: Robert A. Smith
  • Patent number: 4709461
    Abstract: A method of forming a fine grained equiaxed ingot by melting metal and placing it in a mold having a restriction at the entrance disposed to solidify the metal in the entrance to the mold prior to complete solidification of the metal in the mold such that a shrinkage void is formed below the entrance to the mold. The ingot is then hot isostatically pressed (HIPped) to fully densify the ingot and eliminate the shrinkage void.
    Type: Grant
    Filed: February 10, 1986
    Date of Patent: December 1, 1987
    Assignee: Howmet Turbine Components Corporation
    Inventor: William R. Freeman, Jr.
  • Patent number: 4667726
    Abstract: Metal castings are prepared using thin rigid closed molds by submerging the mold in a bath of high temperature molten metal, with removal of the mold from the bath being handled to hold the metal inside the mold, but to allow the excess metal to run off the exterior of the mold without metal freezing there which could cause damage or locking-in of the mold.
    Type: Grant
    Filed: April 8, 1985
    Date of Patent: May 26, 1987
    Inventor: Robert H. Beetle
  • Patent number: 4660614
    Abstract: A die casting process for making castings by means of a horizontally oriented cold-chamber die casting machine comprises the steps of advancing a casting piston in the casting chamber from a starting position for ejecting the molten metal dosage from the casting chamber; and withdrawing the casting piston into the starting position. The withdrawing step includes the step of passing over metal residues adhering to walls of the casting chamber. Subsequent to the withdrawing step and prior to the charging step of a successive cycle, the casting piston is advanced in the casting chamber void of molten metal dosage for ejecting the metal residues by the casting piston from the charging chamber and returning the casting piston into its starting position.
    Type: Grant
    Filed: January 22, 1985
    Date of Patent: April 28, 1987
    Assignees: Maschinenfabrik Muller-Weingarten AG, Vereinigte Aluminium-Werke AG
    Inventors: Jochen Spriestersbach, Herbert Woithe
  • Patent number: 4641704
    Abstract: A method is described for continuously casting an ingot of a metal alloy of the type having a substantial liquidus-solidus temperature range so that the ingot will have a "smooth" surface free of hot-tears. A succession of substantially equal volume quantities of the molten alloy is poured into a continuous casting mold at a pressure of less than about 10.sup.-3 Torr. The quantity of each pour is sufficient to cover the entire cross section of the mold by flow under the influence of gravity and each quantity is allowed to substantially solidify between pours to form successive axial increments which make up the ingot. Each increment is allowed to cool for at least about 30 seconds between pours to form a sufficiently solid side-wall to prevent hot-tears.
    Type: Grant
    Filed: January 25, 1985
    Date of Patent: February 10, 1987
    Assignee: Degussa Electronics Inc.
    Inventor: James H. C. Lowe
  • Patent number: 4576217
    Abstract: Process for the continuous casting of metal from a substantially stationary vessel wherein molds having elongated pouring basins are filled in increments via a plurality of serially arranged and sequentially actuated pouring spouts.
    Type: Grant
    Filed: July 2, 1984
    Date of Patent: March 18, 1986
    Assignee: General Motors Corporation
    Inventor: Daniel Shaw
  • Patent number: 4557313
    Abstract: An apparatus for the continuous sequential casting of metals and their alloys wherein a furnace is rotated about an axis and a series of molds is continuously transported to the furnace and the molds are sequentially filled with molten metal poured from the furnace. Each of the molds is caused to move in synchronous arcuate motion with an outlet of the furnace directly above the mold, so that the mold may be filled with metal from the furnace during the synchronous motion thereof. Within the furnace, a central main chamber communicates with the respective chamber of each of the outlets, such that, a continuous circuit of molten metal is maintained between the main and outlet chambers. In the top portion of the main chamber, an annular opening allows the addition of charge to the furnace during the rotation thereof for the continuous sequential casting process. During the filling of the molds, metal is withdrawn from the furnace substantially below the slag therein to prevent slag from entering the molds.
    Type: Grant
    Filed: February 19, 1980
    Date of Patent: December 10, 1985
    Inventor: Robert L. Navarre
  • Patent number: 4546812
    Abstract: A method and apparatus for casting parts comprising an open-faced mold which is displaced under a ladle. As the mold cavities, defined in the face of the mold, pass beneath the ladle, each is filled with molten material via a sprue in the bottom of the ladle. The ladle includes a venting conduit positioned within the sprue so that as the molten material empties into a mold cavity from the ladle, the air trapped within the mold cavity is vented through the sprue via the venting conduit.
    Type: Grant
    Filed: September 30, 1983
    Date of Patent: October 15, 1985
    Assignee: Tiegel Manufacturing Company
    Inventor: Ralph G. Tiegel
  • Patent number: 4509578
    Abstract: Apparatus for the continuous casting of metal from a substantially stationary vessel wherein molds having elongated pouring basins are filled in increments via a plurality of serially arranged and sequentially actuated pouring spouts.
    Type: Grant
    Filed: February 12, 1982
    Date of Patent: April 9, 1985
    Assignee: General Motors Corporation
    Inventor: Daniel Shaw
  • Patent number: 4505307
    Abstract: In a die cast machine of the type wherein molten metal in a metal melting furnace is poured into an injection sleeve and the molten metal in the injection sleeve is injected into a die, a ladle having a molten metal discharge port is used to receive the molten metal from the furnace. The lower portion of the ladle is inserted into the injection sleeve. Then the port is opened to discharge the molten metal in the ladle into the injection sleeve and the ladle is continuously raised at such a speed that the level of the molten metal in the sleeve is always maintained at a level near the port.
    Type: Grant
    Filed: June 28, 1983
    Date of Patent: March 19, 1985
    Assignee: Ube Industries, Ltd.
    Inventor: Masashi Uchida
  • Patent number: 4431046
    Abstract: A low pressure casting process using a furnace of the channel-type induction for heating, the furnace power being automatically controlled by direct temperature measuring of the molten metal bath according to the desired casting temperature. The feeding chamber of the furnace is of pressure-type and has a protective gas with a slight over-pressure. The furnace is filled via a syphon-shaped feeding chamber whereby metal is inserted below the level of molten metal in the feeding chamber and the protective gas therein is not affected. An operator starts the casting process whereby a casting mold is closed and assumes a casting position over the casting nozzle from the furnace and metal is forced into the mold. The mold, one of several on a carousel is moved to a station wherein the casting is automatically discharged to a conveyor belt. The mold next moves to an immersion bath where it is treated, and then to a preparation station wherein it may be cleaned and cores inserted.
    Type: Grant
    Filed: December 15, 1980
    Date of Patent: February 14, 1984
    Assignee: Russ-Elektroofen Produktiongsgesellschaft mbH & Co.
    Inventor: Gunter Phillips
  • Patent number: 4417617
    Abstract: An apparatus for forming metal articles, such as rods and tubes by aspiration casting is provided in which a hollow frangible mold, such as a glass tube, is immersed at one end in a molten metal bath, a vacuum is applied to the other end controlled with respect to temperature of the molten metal so as to substantially fill the mold with a minimum of turbulence, the filled mold is withdrawn from the metal and the frangible mold is shattered to remove it from the metal article formed within.
    Type: Grant
    Filed: March 9, 1979
    Date of Patent: November 29, 1983
    Assignee: Cabot Corporation
    Inventors: Sankar P. Iyer, Roy D. Lewis, H. Joseph Klein, William C. Hord, James C. Ailor
  • Patent number: 4397687
    Abstract: A mixing device (e.g., a stirrer) to ensure thorough mixing of metals and metal alloys comprising a generally rectangular solid and a series of off-side, but area-equivalent ports on each side of the axial center, wherein the size and number of ports on one side is different from the size and number of ports on the other side, the upper and lower limits of the ports being defined by oppositely opposed anguarly directed fin portions wherein the fins on one side of the axial center are directed in one direction and the fins on the other side of the axial center are directed in the opposite direction. The invention also embodies a method of mixing molten metals and alloys with the device.
    Type: Grant
    Filed: May 21, 1982
    Date of Patent: August 9, 1983
    Assignee: Massachusetts Institute of Technology
    Inventor: Richard Bye
  • Patent number: 4392805
    Abstract: A centrifugal casting apparatus comprises a mold mounted for rotation about the vertical axis thereof and having a bottom provided with a through axial opening. A member having a helicoidally shaped surface is axially mounted within the opening in the bottom. The member has a lower portion to be immersed into a melt and extending out of the opening and downwardly of said bottom of the mold. The mold and the member are connected with a rotation drive and a vertical motion drive.
    Type: Grant
    Filed: October 31, 1980
    Date of Patent: July 12, 1983
    Inventors: Oleg L. Golyak, Leonty A. Golyak, Ivan R. Stepurenko
  • Patent number: 4378836
    Abstract: A foundry manipulation method and device for foundry castings or equipment and in particular for molten metal, constituted by a frame 1 supporting an arm 9 to one of the ends of which there is fitted a member 11 for supporting castings, equipment or metal. According to the invention, the frame 1 comprises a fixed part 2 and a mobile part 3 rotating relative to part 2 about a vertical shaft. The support member 11 is hinged to end of the arm 9, arm is hinged in the vicinity of its other end 9b to the top of mobile part 3 about a horizontal pin 12 in such a manner that the support member 11 passes to a position directly above vertical shaft 3 during the movement of the arm 9 about its hinge 12, means 19 being provided to maintain support member in a vertical position, whatever the inclination of the arm.
    Type: Grant
    Filed: February 22, 1980
    Date of Patent: April 5, 1983
    Inventor: Robert Moussault
  • Patent number: 4341256
    Abstract: Battery plates are assembled into stacks forming positive and negative rows of lugs and the stacks are placed within the cells in a battery case. Molding channels are automatically formed around the positive and negative rows of lugs and molten lead alloy is automatically introduced into the molding channels to cast the straps and intercell connections simultaneously within the battery case.
    Type: Grant
    Filed: July 30, 1980
    Date of Patent: July 27, 1982
    Assignee: General Battery Corporation
    Inventor: William J. Eberle
  • Patent number: 4241780
    Abstract: Battery plates are assembled into stacks forming positive and negative rows of lugs and the stacks are placed within the cells in a battery case. Molding channels are automatically formed around the positive and negative rows of lugs and molten lead alloy is automatically introduced into the molding channels to cast the straps and intercell connections simultaneously within the battery case.
    Type: Grant
    Filed: December 20, 1976
    Date of Patent: December 30, 1980
    Assignee: General Battery Corporation
    Inventor: William J. Eberle