To Transport Casting Material To Mold (e.g., Vacuum Forming, Etc.) Patents (Class 164/63)
  • Patent number: 10605285
    Abstract: Connections between nodes and tubes are provided. An apparatus can include additively manufactured first and second nodes, a tube, and an interconnect connecting the tube to the first and second nodes. An apparatus can include a node having an end portion with inner and outer concentric portions forming an annular gap therebetween, and a tube having an end portion extending into the gap.
    Type: Grant
    Filed: August 8, 2017
    Date of Patent: March 31, 2020
    Assignee: DIVERGENT TECHNOLOGIES, INC.
    Inventors: Kevin Robert Czinger, Broc William TenHouten, John Russell Bucknell, Antonio Bernerd Martinez, Eahab Nagi El Naga, William Bradley Balzer, Zachary Meyer Omohundro, Praveen Varma Penmetsa, Matthew Michael O'Brien, John Franklin Dunham
  • Patent number: 10596618
    Abstract: Provided is a method for producing a heat sink that can easily and effectively form a heat radiating film on the surface of a substrate without requiring enormous heat energy for increasing the temperature of the substrate. The method is a method for producing a heat sink having a substrate and a heat radiating film formed on the surface of the substrate, including a first step of casting a substrate by injecting molten metal into a cavity of molding dies; and a second step of applying a heat radiating coating to the substrate through spraying or dropping in the period from when the molding dies are opened after the casting until when the temperature of the substrate that has been cast becomes lower than the deposition temperature that is a temperature necessary to deposit the heat radiating coating on the substrate.
    Type: Grant
    Filed: August 23, 2017
    Date of Patent: March 24, 2020
    Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, MEC International Co., Ltd.
    Inventors: Naoaki Sugiura, Yuichi Furukawa, Mitsuhiro Kobayashi, Fumio Kawahara, Katsuhiro Takami
  • Patent number: 10480555
    Abstract: Connections between nodes and tubes are provided. An apparatus can include additively manufactured first and second nodes, a tube, and an interconnect connecting the tube to the first and second nodes. An apparatus can include a node having an end portion with inner and outer concentric portions forming an annular gap therebetween, and a tube having an end portion extending into the gap.
    Type: Grant
    Filed: August 8, 2017
    Date of Patent: November 19, 2019
    Assignee: DIVERGENT TECHNOLOGIES, INC.
    Inventors: Kevin Robert Czinger, Broc William TenHouten, John Russell Bucknell, Antonio Bernerd Martinez, Eahab Nagi El Naga, William Bradley Balzer, Zachary Meyer Omohundro, Praveen Varma Penmetsa, Matthew Michael O'Brien, John Franklin Dunham
  • Patent number: 10300950
    Abstract: A suspension member and a method for manufacturing the same are provided by which it is possible to manufacture the suspension member at a low cost without decreasing rigidity thereof while also suppressing strain at joining portions. The present invention is a method for manufacturing a suspension member (100) provided with: a pair of side members (40), and a cross member (10) linking the pair of side members and including an upper member (11) and a lower member (21) extending in a lateral direction of a vehicle and provided with base portions (12 and 22) and raised portions (15, 16, 25, and 26).
    Type: Grant
    Filed: March 31, 2014
    Date of Patent: May 28, 2019
    Assignee: Yorozu Corp.
    Inventors: Yuji Uchiyama, Shouta Tabata
  • Patent number: 9701341
    Abstract: A space frame for a machine is disclosed. The space frame may have a first end configured to be connected to front wheels of the machine. The space frame may also have a second end configured to be connected to rear wheels of the machine. Further, the space frame may have primary structural members arranged substantially lengthwise between the first end and the second end. In addition, the space frame may have secondary structural members connected between the primary structural members to form substantially triangulated structures allowing the space frame to support a payload to empty vehicle weight ratio ranging from about 1.2:1 to 2:1.
    Type: Grant
    Filed: August 3, 2015
    Date of Patent: July 11, 2017
    Assignee: Caterpillar Inc.
    Inventors: Edward Patrick Ormiston, David William Holthaus, Andres Munoz-Najar, Venkata Rama Varma Dantuluri
  • Publication number: 20140353139
    Abstract: A cutting tool having a metallic glass thin film (MGTF) coated thereon, a metallic glass cutting tool, and methods of fabricating the same are disclosed. The cutting tool having metallic glass thin film coated thereon comprises: a cutting element having a sharpened portion, and the cutting element is made of metal; and a metallic glass thin film coated on the cutting element, and the metallic glass is represented by the following formula 1 or formula 2, (ZraCubNicAld)100-xSix,??[formula 1] wherein 45=<a=<75, 25=<b=<35, 5=<c=<15, 5=<d=<15, 0.1=<x=<10, (ZreCufAggAlh)100-ySiy,??[formula 2] 35=<e=<55, 35=<f=<55, 5=<g=<15, 5=<h=<15, 0.1=<y=<10. The metallic glass cutting tool of the present invention comprises: a cutting element having a sharpened portion, and the cutting element is made of a metallic glass represented by the above formula 1 or formula 2.
    Type: Application
    Filed: August 19, 2014
    Publication date: December 4, 2014
    Inventors: Jason Shiang Ching JANG, Pei Hua TSAI, Jia Bin LI, Yu Ze LIN, Chih Chiang FU, Jinn P. CHU
  • Patent number: 8875776
    Abstract: A method for producing a metal ingot using a mold which includes a mold cavity defined by an ingot mold, a core and a bottom arranged inside a vacuum-cast enclosure including a portion for introducing molten metal at the upper portion thereof. A portion for receiving and distributing molten metal, which is suitable for receiving the molten steel introduced into the vacuum-cast enclosure and for redistributing the molten metal in the mold cavity, is arranged at the upper portion of the mold cavity. The molten metal is introduced into the enclosure to form a first jet of molten steel under a vacuum, to pour the molten metal over the portion and to form at least one second jet of molten steel under a vacuum, which originates with the portion and terminates in the mold cavity to fill the mold cavity with molten metal.
    Type: Grant
    Filed: October 21, 2009
    Date of Patent: November 4, 2014
    Assignee: Arcelormittal Investigación Y Desarrollo, S.L.
    Inventors: Thierry Faudan, Jean-Luc Dabin, Gilbert Lacagne, Maxime Leroy, Bruno Savalli, Franck Braconnier
  • Publication number: 20140311630
    Abstract: A bulk metallic glass forming alloy having the following composition x(aZr bHf cM dNb eO) yCu zAI and its preparation from an alloy L=(aZr bHf cM dNb eO), Cu, and Al as well as the use thereof is described.
    Type: Application
    Filed: November 22, 2012
    Publication date: October 23, 2014
    Inventors: Jochen Heinrich, Ralf Busch
  • Patent number: 8826965
    Abstract: A high-vacuum die-casting method includes an injecting step of moving a plunger in a sleeve so that a molten metal fed to the sleeve is pushed by the plunger to be injected into a cavity formed by a fixed mold and a movable mold, a cavity vacuumizing step of vacuum absorbing a gas in the cavity to discharge the vacuum-absorbed gas to the outside through a first path, and a sealed space vacuumizing step of vacuum absorbing a gas in a sealed space in which an eject plate and one ends of eject pins are arranged to discharge the vacuum-absorbed gas to the outside through a second path while the injecting step is performed. The sealed space vacuumizing step is started prior to the cavity vacuumizing step.
    Type: Grant
    Filed: March 26, 2013
    Date of Patent: September 9, 2014
    Assignee: Dongnam Precision Co., Ltd.
    Inventors: Yong Hyun Kim, Deak Soo Kim, Joo Yul Park
  • Publication number: 20130255901
    Abstract: A high-vacuum die-casting method includes an injecting step of moving a plunger in a sleeve so that a molten metal fed to the sleeve is pushed by the plunger to be injected into a cavity formed by a fixed mold and a movable mold, a cavity vacuumizing step of vacuum absorbing a gas in the cavity to discharge the vacuum-absorbed gas to the outside through a first path, and a sealed space vacuumizing step of vacuum absorbing a gas in a sealed space in which an eject plate and one ends of eject pins are arranged to discharge the vacuum-absorbed gas to the outside through a second path while the injecting step is performed. The sealed space vacuumizing step is started prior to the cavity vacuumizing step.
    Type: Application
    Filed: March 26, 2013
    Publication date: October 3, 2013
    Applicant: DONGNAM PRECISION CO., LTD.
    Inventors: Yong Hyun Kim, Deak Soo Soo Kim, Joo Yul Park
  • Patent number: 8443867
    Abstract: A casting method and a casting device for a cast-metal object which are inexpensive and have a high degree of freedom are provided to cast plural types of cast-metal objects simultaneously. A cast-metal object is cast by using a casting device (10) including a mold structure (5) for forming a casting space capable of filling molten metal; and a runner (1) provided separately from the mold structure (5) for supplying molten metal into the casting space in the mold structure (5) by connecting the runner to the mold structure (5), wherein the runner (1) has a dividable structure, and the mold structure (5) has an assembly structure of a plurality of members.
    Type: Grant
    Filed: December 14, 2010
    Date of Patent: May 21, 2013
    Assignee: Bridgestone Corporation
    Inventor: Yasuyuki Ishihara
  • Publication number: 20120325423
    Abstract: A method of manufacturing a motor rotor includes a preparing step, a pre-heating step and a molding step. The preparing step includes preparing multiple silicon-steel sheets, a shaft, a mold and a molten copper liquid. The pre-heating step includes stacking the silicon-steel sheets and mounting the stacked silicon-steel sheets around the shaft and pre-heating the silicon-steel sheets to a specific temperature. The molding step includes mounting the silicon-steel sheets and the shaft into the mold, heating the silicon-steel sheets, the shaft and the mold, drawing air out of the mold to a vacuum status, injecting the molten copper liquid into the mold, sucking the molten copper liquid and filling up the mold with the molten copper liquid, cooling the mold to form a copper ring around the silicon-steel sheets, getting the shaft and the silicon-steel sheets with the copper ring out of the mold and separating the shaft from the silicon-steel sheets to form a motor rotor.
    Type: Application
    Filed: June 22, 2011
    Publication date: December 27, 2012
    Inventor: Chin-Feng CHANG
  • Patent number: 8312913
    Abstract: A method of casting including coating at least a portion of a mold with a non-porous coating, placing the mold in a chamber capable of inducing pressure, and applying pressure to the chamber to press material into a cavity in the mold. Another method of casting including coating at least a portion of a mold with a non-porous coating, placing a first fill tube in a material, applying a vacuum to a second fill tube to establish a vacuum within the non-porous coating, and allowing atmospheric pressure to inject the material into the mold without placing the mold in a chamber capable of inducing pressure.
    Type: Grant
    Filed: February 22, 2006
    Date of Patent: November 20, 2012
    Assignee: Milwaukee School of Engineering
    Inventors: Vito R. Gervasi, Adam J. Schneider, Josh Rocholl, Doug C. Stahl
  • Publication number: 20120269672
    Abstract: In said method, the mold (1), which includes a mold cavity (3A) defined by an ingot mold (2), a core (4) and a bottom (27), is arranged inside a vacuum-cast enclosure (5) including a means (9) of introducing molten metal at the upper portion thereof. A means (11A, 11?) for receiving and distributing molten metal, which is suitable for receiving the molten steel introduced into the vacuum-cast enclosure (5) and for redistributing the molten metal in the mold cavity (3A), is arranged at the upper portion of the mold cavity (3A). The molten metal is introduced into the enclosure (5) so as to form a first jet of molten steel (50) under a vacuum, in order to pour the molten metal over the receiving and distributing means (11A, 11?) and to form at least one second jet of molten steel (52) under a vacuum, which originates with the receiving and distributing means (11A, 11?) and terminates in the mold cavity (3A) so as to fill the mold cavity (3A) with molten metal.
    Type: Application
    Filed: October 21, 2009
    Publication date: October 25, 2012
    Applicant: ARCELORMITTAL INVESTIGACION Y DESARROLLO S.L.
    Inventors: Thierry Faudan, Jean-Luc Dabin, Gilbert Lacagne, Maxime Leroy, Bruno Savalli, Franck Braconnier
  • Patent number: 8128726
    Abstract: A method and a device for admixture of powder in a liquid, whereby the method comprises that the liquid in a supply (14), influenced by underpressure in a crucible (12) to which the liquid is to be transferred, flows through a drain tube (6) out of the supply (14), the powder is dosed from a powder receptacle (1) and is driven by a gas, and the mixture of powder and gas is added to the liquid in the drain tube (6) and mixed therewith, whereupon the mixture flows into the crucible (12). The device comprises a supply (14) from which the liquid may flow and a receptacle (1) with powder, whereby a drain tube (6) connects the supply (14) with a receiving receptacle (12) which can be held at an inner underpressure. A device (4) for supply of a driving gas for the powder is connected to a mixing chamber (3) at an outlet from the powder receptacle (1), while the mixing chamber (3) is connected to the drain tube (6) for supply of powder to the liquid flowing in the drain tube.
    Type: Grant
    Filed: June 22, 2007
    Date of Patent: March 6, 2012
    Assignee: Heggset Teknologi AS
    Inventors: Bjarne Anders Heggset, Per Gunnar Strand, Jo Henrik Vaagland
  • Publication number: 20120049477
    Abstract: A steering knuckle for a vehicle includes a metal body having a first portion defining a bore therethrough and a second portion extending longitudinally from said first portion. The steering knuckle also includes a ceramic insert disposed with the first portion and the second portion and surrounding the bore. A method of forming the steering knuckle includes disposing the ceramic insert within a cavity of a mold, sufficiently filling the cavity with a molten metal to contact and envelop the ceramic insert with the molten metal, and solidifying the molten metal so as to surround the ceramic insert with the metal body to thereby form the steering knuckle.
    Type: Application
    Filed: August 31, 2010
    Publication date: March 1, 2012
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
    Inventors: James A. Webster, Tomasz Warzecha
  • Publication number: 20110094700
    Abstract: A method and system of forming a micro-wire including heating metal feedstock to a liquid state within a glass tube, wherein the metal feedstock includes an iron based glass forming alloy comprising one or more of nickel and cobalt present in the range of 7 atomic percent to 50 atomic percent and one or more of boron, carbon, silicon, phosphorous and nitrogen present in the range of 1 to 35 atomic percent. Negative pressure may be provided to the interior the glass tube and the glass tube containing the metal feedstock may be drawn down. The metal feedstock in the glass tube may be cooled at a rate sufficient to form a wire exhibiting crystalline microstructures present in the range of 2 to 90 percent by volume in a glass matrix.
    Type: Application
    Filed: October 22, 2010
    Publication date: April 28, 2011
    Applicant: THE NANOSTEEL COMPANY, INC.
    Inventors: Daniel James BRANAGAN, Alla V. SERGUEEVA, Jikou ZHOU, James N. MILLOWAY
  • Publication number: 20100181041
    Abstract: The invention concerns a production of precision castings by centrifugal casting, comprising the following steps: a) providing a centrifugal casting device having a rotor (1) being rotatable around an axis (A), and at least one crucible (8) being accommodated in the rotor (1) and at least one mold (4) being associated with said crucible (8) and being accommodated in a first radial distance (r1) from the axis (A), b) creating a metal melt (15) within the crucible (8), c) rotating the rotor (1) and thereby forcing the melt (15) by means of centrifugal forces from the crucible (8) into the mold (4), d) exerting a pressure on the melt (15) being forced into the mold (4) until the temperature of the solidifying melt (15) has reached a predetermined cooling-temperature in a range of 1300° to 800° C., wherein the pressure corresponds to the centrifugal force acting on the melt (15) at the moment when the mold (4) is completely filled times a factor of 1.0 to 5.
    Type: Application
    Filed: October 23, 2006
    Publication date: July 22, 2010
    Inventor: Manfred Renkel
  • Publication number: 20100116453
    Abstract: A quiescent melt handling system includes a melting furnace and a holding furnace communicating with the melting furnace for holding a molten metal melt. The holding furnace has a relatively large surface area and a relatively shallow depth, having a width to depth ratio in the range of 4-100 to 1. Also provided is structure in the holding furnace for separating inclusions from the melt in the holding furnace. A mold communicates with the holding furnace. A counter gravity casting system, which might comprise a vacuum assisted casting system, draws the melt into the mold.
    Type: Application
    Filed: October 13, 2009
    Publication date: May 13, 2010
    Inventors: John R. Grassi, John Campbell, Christopher Shaw
  • Publication number: 20090321036
    Abstract: A casting method and apparatus are provided capable of producing high-quality castings having extremely few defects attributable to entrainment of gas, oxide film and the like both economically and while conserving energy. Namely, a sealing plate having a seal, an opening and a pressure reduction vent is arranged between a gate of a die cavity and a feeding tube, and the die cavity is depressurized by sealing the gate. Next, the inside of the feeding tube is depressurized through the pressure reduction vent provided in the lower surface of the sealing plate to suck a molten metal, the opening of the sealing plate is moved to between the gate and the feeding tube when the molten metal has entered the pressure reduction vent, and the molten metal is filled into the die cavity due to the pressure difference between the die cavity and the molten metal in the feeding tube. A consumable seal made of a material similar to the molten metal can also be used for the gate seal.
    Type: Application
    Filed: August 31, 2009
    Publication date: December 31, 2009
    Inventor: Itsuo Ohnaka
  • Publication number: 20090050289
    Abstract: The invention relates to an improved vacuum die-casting, in particular for metals and metal alloys which contain Al, Mg, Zn, and Cu. In order to improve the quality of the components, it is proposed to produce vacuum in the mold cavity and the casting chamber cavity in several phases of the die-casting process. The use of the new method is contemplated for both cold-chamber and hot-chamber die-casting.
    Type: Application
    Filed: November 23, 2005
    Publication date: February 26, 2009
    Applicant: PFEIFFER VACUUM GMBH
    Inventor: Hedwig Lismont
  • Patent number: 7213634
    Abstract: An offset mold process deflects a mold assembly being conveyed along a first path laterally of that path into engagement with a nozzle using a shuttle car. Molten metal is pumped into the mold assembly, which is either a cope and drag mold or a lost foam mold, from below the molded part to eliminate eddy currents which can create incongruities in the molded part. One method of flow cutoff involves movement of a first mold component relative to the bottom board cuts off the flow of molten metal and locks the mold fill in the mold assembly. A second method of flow shutoff usable in the lost foam process involves the engagement of a flow cutoff plunger to cut the flow stream once filling the mold has been completed. In both the cope and drag and lost foam apparatuses, withdrawal of the shuttle car enables molten metal in the feed line to drain into a catch ladle obviating the need to burn embedded sand from the scrap prior to its recycling into the melt.
    Type: Grant
    Filed: March 2, 2006
    Date of Patent: May 8, 2007
    Inventors: Dwight Evans, Russell Taccone, legal representative, Russell Taccone, Sr., deceased
  • Patent number: 6684934
    Abstract: Countergravity casting of metals and metal alloys provides for melting of the metallic material under subambient pressure, evacuation of a gas permeable or impermeable mold under subambient pressure, and controlled, rapid filling of the mold while it is maintained under the subambient pressure by applying gas pressure locally on the molten metallic material in a sealed space defined by engagement of a mold base and a melting vessel with a seal therebetween. The gas pressure applied locally in the sealed space establishes a differential pressure on the molten metallic material to force it upwardly through the fill tube into the mold.
    Type: Grant
    Filed: May 24, 2000
    Date of Patent: February 3, 2004
    Assignee: Hitchiner Manufacturing Co., Inc.
    Inventors: Danny L. Cargill, Mark W. Oles, Robert A. Poole
  • Patent number: 6615899
    Abstract: A method of casting a metal article comprising the steps of forming a mold having a mold cavity with a height, a thinwall portion and a base wall portion. The thinwall portion may be less than 0.05 inches thick and free of gating. The method comprises the steps of: positioning the mold in a preheated furnace so that the furnace substantially surrounds the mold and so that a longitudinal axis of the long thin portion of the mold cavity is in an upright orientation; heating the mold in the furnace to a temperature between 1045° C. and 1055° C.; and drawing a vacuum in the furnace. The metal is heated until it is molten and is then poured at a temperature between 1560° land 1570° C. into the mold cavity. The vacuum is then broken and the mold cavity withdrawn from the furnace. The molten metal is allowed to solidify in the mold cavity so that it will solidify with a equiaxed grain structure.
    Type: Grant
    Filed: July 12, 2002
    Date of Patent: September 9, 2003
    Assignee: Honeywell International Inc.
    Inventors: John M. Woodward, Tom Miller, Candy Mitchell
  • Patent number: 6499529
    Abstract: Method and apparatus for countergravity casting a plurality of articles wherein a ceramic mold is provided having an upstanding riser passage and a plurality of mold cavities disposed along a length of the riser passage at different elevations, each mold cavity communicating to the riser passage via a gate passage, wherein molten metal is forced to flow upwardly from a source into the riser passage for supply to the mold cavities via their gate passages, wherein the mold is rotated so that molten metal that resides in the gate passages is subjected to centrifugal force in a direction toward the mold cavities, and wherein molten metal in the riser passage is drained to empty the riser passage before molten metal in the mold cavities and the gate passages solidifies, leaving the gate passages at least partially filled with molten metal for supply to the mold cavities in response to shrinkage as molten metal therein solidifies while the container is rotated.
    Type: Grant
    Filed: August 17, 2001
    Date of Patent: December 31, 2002
    Assignee: Hitchiner Manufacturing Co., Inc.
    Inventor: Attila P. Farkas
  • Patent number: 6467531
    Abstract: A gravity pour vacuum casting method and apparatus providing uniform set-up provisions for gas permeable molds regardless of mold size, shape, or mold type employed in accordance with the present invention. Apparatus includes a sprue-forming device that when combined with a disposable foundry patter and subsequently invested together as a unit forms a gas permeable mold in accordance with the present invention, and further includes a vacuum chamber configured to match corresponding counterparts of said sprue-forming device.
    Type: Grant
    Filed: October 14, 2000
    Date of Patent: October 22, 2002
    Inventor: Clyde D. Doney
  • Patent number: 6453976
    Abstract: A vaporizable refractory coated pattern assembly is formed having a sprue connected to a plurality of thin wall patterns of articles to be cast. The pattern assembly is supported in a refractory particulate media in an open bottom container that is evacuated to subambient pressure and rotated in a manner to distribute particulates to regions of the refractory coated patterns not yet directly contacted by particulates. The pattern assembly is comprised of relatively dense foam plastic pattern material that imparts increased strength to the thin wall patterns. The sprue includes a vent passage that communicates to a particulate media to vent pattern decomposition vapors thereto in a manner that enables faster replacement of the pattern assembly in the media, despite the use of the relatively dense pattern material.
    Type: Grant
    Filed: October 29, 1999
    Date of Patent: September 24, 2002
    Assignee: Hitchiner Manufacturing Co., Inc.
    Inventors: George D. Chandley, Qi Zhao
  • Patent number: 6422293
    Abstract: Placed in a box (1) is a ceramic shell (21) delimiting a casting space (22), the shell being surrounded by a mass of binder-free sand (23). The casting space is connected to a source (4) of liquid metal located underneath, in which are applied, in succession, a pressure (P1) bringing the liquid to the threshold of the casting space (22), a pressure (P2) slightly greater than that necessary for filling this space, and then a marked overpressure (P3); finally, the pressure is brought back down to the first value (P1). When the casting space has been filled, an underpressure is created in the space containing the mass of sand (23) in order to prevent any deformation of the shell (21) due to the overpressure (P3), at least until the formation of a metal skin against the shell and at most until the start of the reduction in the overpressure in the source (4) of liquid metal.
    Type: Grant
    Filed: November 18, 1999
    Date of Patent: July 23, 2002
    Assignee: SEVA
    Inventors: Jean-Louis Comarteau, Christophe Liebaut, Alain Reny, Didier Thomas
  • Patent number: 6311758
    Abstract: The first suction port is formed between a side die and the peripheral protrusion of an upper die. A release pin insertion hole is formed at the peripheral protrusion of the upper die which forms the upper end portion of the cavity. A release pin is inserted into the release pin insertion hole. The second suction port is formed between the insertion hole and the pin. Alternatively, a plurality of vent holes having permeable sintered metal arranged are formed instead of the release pin to serve as the second suction port. The suction negative pressure of the second suction port is set higher than that of the first suction port. High negative pressure from the second suction port inhibits air from remaining on the low temperature surface portion of the upper die.
    Type: Grant
    Filed: June 21, 1999
    Date of Patent: November 6, 2001
    Assignees: Central Motor Wheel Co., Ltd., Toyota Jidosha Kabushiki Kaisha
    Inventors: Haruyuki Sakabe, Tomokazu Sawada, Ryuuichi Masuda, Hiroyuki Urusidani
  • Patent number: 6305460
    Abstract: In order to increase casting production during a filling of a mold from below, whereby an uptake for the casting mass is provided in the molding sand of the mold, immediately after the filling of the mold has been concluded a part of the uptake, which part extends in the molding sand, is interrupted and thus closed off so that the mold can be immediately separated from the casting container.
    Type: Grant
    Filed: December 21, 1998
    Date of Patent: October 23, 2001
    Assignee: Heinrich Wagner Sinto Maschinenfabrik GmbH
    Inventor: Herbert Grolla
  • Patent number: 6276046
    Abstract: A molding method for bicycle metal frame, including the steps of: pouring a fixed amount of molten metal into a reservoir with the relatively light oxide membrane floating on the upper surface of the clean and pure molten metal, the male and female molds being mated to define a bicycle frame mold cavity which is vacuumized through a vacuum path, then by way of high pressure filling, the clean and pure molten metal being filled into the mold cavity through a mold flow way, then the molten metal quickly passing through the mold flow way to flow and distribute over the vacuumized bicycle frame mold cavity and spilling back flow tank defined by the mated male and female molds by way of drawing out the mold core, then, immediately the molten metal being abruptly cooled through several cooling pipelines defined by the mated male and female molds to pattern the molten metal into a bicycle frame with polished surface without pore; demolding the male and female molds to take out the bicycle frame which is blown by win
    Type: Grant
    Filed: October 14, 1999
    Date of Patent: August 21, 2001
    Assignee: Rudar Industry Co., Ltd.
    Inventor: Ming Szu Chang
  • Patent number: 6257312
    Abstract: A composite material having less than about 25 volume percent refractory particles in a metal matrix is concentrated to have about 37-45 volume percent refractory particles. The concentrating is accomplished by heating the composite material to melt the matrix, and then contacting the molten composite material to a porous element having an average pore size greater than that of the average particle size. A small pressure differential, on the order of about one atmosphere, is applied across the porous element, so that metal matrix material separates from the composite material and flows through the porous element. The particulate volume fraction in the composite material gradually increases. When the particulate volume fraction exceeds about 37 volume percent, the mass of composite material becomes semi-solid and freestanding. The resulting composite material may be further processed, as by forming to a useful shape or diluting with another matrix material.
    Type: Grant
    Filed: August 7, 1998
    Date of Patent: July 10, 2001
    Assignee: Alcan International Limited
    Inventors: Don Doutre, Gary Hay, Iljoon Jin, Peter Wales, David J. Lloyd
  • Patent number: 6247521
    Abstract: A melt filling pressure difference control method controls a pressure difference used to supply melt from a holding furnace to a cavity of a casting machine by generating a pressure difference between an interior space of holding furnace and the cavity formed inside the mold. The method includes the steps of setting up a program pattern comprising time-varying characteristics of pressure difference target values, controlling the pressure difference so as to follow the program pattern that was set up, detecting whether the melt surface has risen to a predetermined level inside the cavity, compensating the program pattern based on the melt surface level when the melt surface has risen to a predetermined level inside cavity, and controlling the pressure difference between space inside the holding furnace and the cavity so as to follow the compensated program pattern.
    Type: Grant
    Filed: August 15, 1996
    Date of Patent: June 19, 2001
    Assignees: Toyota Jidosha Kabushiki Kaisha, Kabushiki Kaisha Isuzu Seisakusho
    Inventors: Hiroshi Kawai, Seiji Hirata, Yasutaka Furukawa
  • Patent number: 6148902
    Abstract: A vacuum die casting system has three die casting machines connected to a single vacuum system, all of which is controlled by a programmable logic controller. The controller allows any two of the machines to be operatively connected to the vacuum system so that the casting operation of those two machines are performed under vacuum. The controller comprises six address relays, a sixteen channel input card, a processor, a sixteen channel output card, an interface and two high speed counter cards. The result is an efficient, reliable, and economical vacuum die casting system.
    Type: Grant
    Filed: October 8, 1997
    Date of Patent: November 21, 2000
    Assignee: Outboard Marine Corporation
    Inventors: Michael D. Zielinski, Edward M. Nelson, Walter H. Yelczyn, David M. Regenauer
  • Patent number: 6125914
    Abstract: A mold having a supply tube in a lower portion and in which has been placed a fibrous preform, is placed in a container. A crucible filled with magnesium blocks is placed under the mold. The magnesium is heated and the mold is preheated under vacuum until the fusion of the magnesium starts. The tube is then introduced into the magnesium and a neutral gas circulation is set up in the container, under a vacuum insufficient to trigger the evaporation of magnesium. After its complete fusion, the magnesium is transferred into the mold by a rapid pressurization of the container. The mold is then cooled and the part removed from the mold.
    Type: Grant
    Filed: November 23, 1998
    Date of Patent: October 3, 2000
    Assignee: Aerospatiale Societe Nationale Industrielle
    Inventors: Laetitia Billaud, Philippe Le Vacon
  • Patent number: 6070649
    Abstract: Disclosed is a method and apparatus for a metal melt, especially steel, into a vertically oscillating mold via a tundish or intermediate vessel provided with an immersion nozzle to generate endless strands, especially thin strands of steel wherein the intermediate vessel has an open first chamber and a closed second chamber. The metal melt is supplied from the casting ladle to the first open chamber. The second chamber is connected with a vacuum device. An immersion pipe, which projects into the mold and which can be vertically oscillated, is provided in the base of the second chamber.
    Type: Grant
    Filed: October 17, 1997
    Date of Patent: June 6, 2000
    Assignee: Mannesmann AG
    Inventors: Ulrich Urlau, Wolfgang Reichelt, Ewald Feuerstacke, Wolfgang Dohring
  • Patent number: 6044893
    Abstract: A method and apparatus for producing a formed article of amorphous alloy by a simple process are disclosed. A molding apparatus comprises a forced cooling casting mold which is provided with a sprue and at least one molding cavity communicating with the sprue and further with a cutting member disposed in the casting mold movably in the direction of the sprue, a melting vessel movable in the direction of the sprue, and a molten metal transferring member disposed slidably in the melting vessel or the molding cavity of the casting mold.
    Type: Grant
    Filed: April 27, 1998
    Date of Patent: April 4, 2000
    Assignee: YKK Corporation
    Inventors: Takeshi Taniguchi, Junichi Nagahora
  • Patent number: 6003586
    Abstract: A process of making a heat-sinking structure, which includes providing a mold having cavities closed at one end and open at another end, the cavities corresponding to the heat dissipating surfaces on the heat-sinking structure, at least partially evacuating ambient gases from the cavities by applying a vacuum to the open end of the cavities, filling the mold with molten material when the mold is substantially evacuated by introducing the thermally conductive material into the mold at the open end of the cavities, and solidifying the thermally conductive material in the mold and removing the resultant molded heat-sinking structure. A combination electromagnetic interference filter and electrical socket assembly is also provided that includes an electromagnetic interference filter, at least one conductive, single-piece, electrical terminal blade passing through the electromagnetic interference filter, and a block of electrically insulating material.
    Type: Grant
    Filed: February 22, 1995
    Date of Patent: December 21, 1999
    Inventor: Glenn L. Beane
  • Patent number: 5908065
    Abstract: Squeeze casting of high integrity, near net shape castings is performed in a mould cavity defined by cooperating die parts which are movable with respect to each other and have a separation distance which is selected to define a predetermined cavity volume for the cast article. A conduit has a first end connected to an entrance in the lower die part of the mould cavity and a second end connected to a receptacle which contains molten metal. Molten metal is transferred upwardly from the receptacle through the conduit to fill or substantially fill the mould cavity. The entrance to the mould cavity is sealed, and pressure is applied on the die parts to further reduce the cavity volume during solidification of the metal in the mould cavity.
    Type: Grant
    Filed: September 26, 1997
    Date of Patent: June 1, 1999
    Assignee: Papervision Limited
    Inventor: Geoffrey Allan Chadwick
  • Patent number: 5868192
    Abstract: The investment casting method uses the lost wax method and involves using a model to form a wax piece in the desired shape such as the shape of the snap element or the shape of two hinge halves, making a tree out of a multitude of the wax pieces, adding slurry and heating to create hard material having spaces shaped like the wax parts and then pouring molten casting material into the spaces in a vacuum environment.
    Type: Grant
    Filed: March 19, 1997
    Date of Patent: February 9, 1999
    Inventor: Eduard Rabinovich
  • Patent number: 5842509
    Abstract: An application method of a powder mold lubricant for a vacuum die-casting mold can effectively apply the powder mold lubricant onto a mold surface of the mold cavity with supplying the powder mold lubricant in small amount, can avoid liquefying of the power mold lubricant to degrade quality of a product, and can avoid loss in cycle time in a vacuum die-casting operation.
    Type: Grant
    Filed: April 11, 1997
    Date of Patent: December 1, 1998
    Assignee: Keihin Corporation
    Inventors: Katsuo Nagashima, Shinichi Oomachi, Fumihiro Sakuma
  • Patent number: 5740854
    Abstract: This invention provides a glassy metal-suction casting method capable of readily and conveniently producing a large-sized amorphous material with excellent properties as an amorphous material. Such an object of the invention is attained by filling a metal material in a mold cooled with water; melting said metal material by using a high-energy heat source which is capable of rapidly melting said metal material; and introducing the resulting molten metal instantaneously into a vertically extending water-cooled mold provided below said mold by using a difference in gas pressure or gravity to move the metal melt at a high speed and attain a high quenching rate to thereby enable the production of a glassy metal ingot of a large size.
    Type: Grant
    Filed: July 14, 1997
    Date of Patent: April 21, 1998
    Assignees: Akihisa Inoue, Kabushiki Kaisha Makabe Giken
    Inventors: Akihisa Inoue, Tao Zhang, Eiichi Makabe
  • Patent number: 5738163
    Abstract: A levitation melting method and device through which a material having various configurations can be melted through efficient induction heating. First, a starting material(WB), whose outer diameter has been adapted to the inner diameter of a crucible(13), is inserted in crucible(13). The crucible(13) is shielded with argon gas, thereby starting the melting of the material(WB) to molten metal(WM). Subsequently, a suction tube(33) of a mold(31) is inserted into the molten metal(WM) for drawing a part of molten metal(WM) up into the mold(31) for casting. After part of the molten metal(WM) is drawn up, a sliding cover(15) is slid such that a material holder(19) is positioned right above the crucible(13). By opening a sliding plate(35) of the material holder(19), material pieces(WS) are inserted from the material holder(19) into the molten metal(WM) left in the crucible(13).
    Type: Grant
    Filed: April 3, 1996
    Date of Patent: April 14, 1998
    Assignee: Daido Tokushuko Kabushiki Kaisha
    Inventors: Noboru Demukai, Masayuki Yamamoto, Junji Yamada
  • Patent number: 5706880
    Abstract: An apparatus and method for casting metal in an evacuated mold cavity. The apparatus has a preferential suction zone through which a mold can be preferentially and effectively evacuated and a suction head sealingly fitting the upper surface of the mold. To the apparatus, is further provided a pressing means for pressing, in cooperation with the suction head, the mold against the inner bottom surface of a mold support chamber. By evacuating the mold through the preferential suction zone while pressing the mold to the bottom of the mold support chamber, a mold cavity is easily filled with a molten metal in such a manner to avoid casting defects such as insufficient filling, blow hole, surface fold, under fill, etc.
    Type: Grant
    Filed: January 25, 1996
    Date of Patent: January 13, 1998
    Assignee: Hitachi Metals, Ltd.
    Inventors: Hiroshi Ohnuma, Kimio Kubo, Akira Mikami, Taichi Ikejiri, Katuhiro Kurose, Hiroyuki Hagiwara
  • Patent number: 5620041
    Abstract: A vacuum casting apparatus secures gas tightness of the die cavity without welding together a straight-tubular stalk and a flange or flanges, thus permitting an excellent quality casting. A flange is mounted on an outer periphery of a stalk, and secured between a gas-tight chamber and a die, forming a recess bounded by the die, a surface of the flange, and an outer surface of the stalk. The space inside the chamber is evacuated to a first degree of vacuum so that molten metal is withdrawn into the stalk and overflows the end of the stalk, and flows into the recess. Molten metal in the recess cools and solidifies to form a gas-tight seal between the stalk and the flange. Then, the space inside the chamber is evacuated to a second degree of vacuum and molten metal is withdrawn through the stalk and into the cavity of the die.
    Type: Grant
    Filed: April 4, 1996
    Date of Patent: April 15, 1997
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Mituyoshi Sato, Minoru Uozumi, Masao Nakayama
  • Patent number: 5597032
    Abstract: A device for injection casting includes a furnace within which is position a crucible, a bell mounted atop a table into which a mold is positioned and a tube interconnecting the crucible and the mold. A device is provided to sense the level of metal within the crucible; piping is provided into the bell and the furnace for controlling the respective pressures therein and various sensors are provided in the bell, mold, tube and furnace which sense various pressures and temperatures experienced within the device during the casting operation. These sensors provide signals to a control apparatus which controls the pressure inside the furnace in order to fill the mold with metal inside the crucible and regulates the speed and pressure inside the mold. A method of operating the device is also provided.
    Type: Grant
    Filed: March 11, 1996
    Date of Patent: January 28, 1997
    Inventor: Pierre Merrien
  • Patent number: 5555925
    Abstract: A vacuum casting apparatus secures gas tightness of the die cavity without welding together a straight-tubular stalk and a flange or flanges, thus permitting an excellent quality casting. Two flanges are mounted in a mutually spaced-apart relation on an outer periphery of a stalk, and secured between a gas-tight chamber and a die. The gas-tight chamber is fitted on the die from above to form a gas-tight space between the two flanges. The space is evacuated to a pressure close to an inner pressure formed in a cavity of the die during vacuum casting. Thus, air that intrudes into the cavity of the die through small gaps between the flanges and the stalk is reduced, thereby preventing casting defects which might otherwise result. An end of the stalk inserted into the die is also spread to bring an outer periphery of the stalk into close contact with an inner periphery of a flange mounted on the stalk.
    Type: Grant
    Filed: September 19, 1994
    Date of Patent: September 17, 1996
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Mituyoshi Sato, Minoru Uozumi, Masao Nakayama
  • Patent number: 5509458
    Abstract: A vacuum casting apparatus of the invention in which a melt is introduced into a mold cavity under vacuum, comprises (a) a vacuum vessel having at least one opening at its bottom; (b) a mold disposed within the vacuum vessel and having a mold cavity, a runner having an opening at a position under the opening of the vacuum vessel and extending along at least partially the side of the mold cavity, the mold cavity communicating with the runner through a plurality of filling passages, and a suction recess formed near a riser; and (c) a vacuum means communicating with the vacuum vessel. When the vacuum means evacuates the interior of the vacuum vessel, the mold cavity is rapidly evacuated to result in rapid filling of the cavity with a melt.
    Type: Grant
    Filed: January 19, 1995
    Date of Patent: April 23, 1996
    Assignee: Hitachi Metals, Ltd.
    Inventors: Hiroshi Onuma, Takashi Mimata, Kimio Kubo
  • 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: 5462107
    Abstract: In a vacuum casting method, a molding cavity is reduced in pressure to a vacuum, and when a gate is opened, a molten metal which has been raised to a molten metal retaining dome is charged into the molding cavity at a high speed. When a portion of a molten metal held in a molten metal holding furnace is raised to the molten metal retaining dome via a stalk, (1) the rising speed of a portion of the molten metal is set at 5-10 cm/sec, or (2) the rising speed is varied between an early stage of the rising motion and a later stage of the rising motion. In the latter method, the rising speed at the early stage of the rising motion is set at a speed higher than 10 cm/sec, while the rising speed at the later stage of the rising motion is set at 5-10 cm/sec. Due to the rising speed control, air involvement by the rising molten metal is effectively prevented.
    Type: Grant
    Filed: June 28, 1994
    Date of Patent: October 31, 1995
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Tamotsu Hasegawa, Yasuyuki Arakawa, Atushi Ota