By Direct Application Of Flame Or Gas Patents (Class 164/124)
  • Patent number: 9884363
    Abstract: A method to manufacture reticulated metal foam via a dual investment solid mold, includes pre-investing a precursor with a diluted pre-investment ceramic plaster to encapsulate the precursor; and investing the encapsulated precursor with a ceramic plaster within an mold of a varied cross-section. A varied cross-section mold includes a mold thickness adjacent to an outer periphery of a pattern at a top of the varied cross-section mold is between 200-500% a thickness between the outer periphery of the pattern at a base of the varied cross-section mold. A varied cross-section mold includes a trapezoidal prism shape with a pour cone in a top, the top larger than the base.
    Type: Grant
    Filed: June 30, 2015
    Date of Patent: February 6, 2018
    Assignee: United Technologies Corporation
    Inventors: Ryan C Breneman, Steven J Bullied, John F Blondin, Ryan B Noraas
  • Patent number: 9457402
    Abstract: An apparatus for delivering a predetermined volume of lead to a mould includes a housing defining a lead reservoir having a lead outlet defined in its base and in communication with the reservoir. A runway is provided beneath the base, spaced from the base and generally parallel thereto. A block is provided slidably mounted between the base and the runway and defining a through cavity having the predetermined volume for receiving lead from the outlet in a first position and for releasing the lead in a second position. A mechanism is provided for reciprocating the block between the first and second positions. A cast on strap machine is also disclosed. A lead delivery apparatus comprising a delivery chute is also disclosed.
    Type: Grant
    Filed: October 30, 2013
    Date of Patent: October 4, 2016
    Inventors: Christopher S. Barge, Mark Ormerod
  • Publication number: 20150122447
    Abstract: A method to produce cast pieces with optimum mechanical properties having through-openings with minimal outlay in terms of equipment. A casting mould in which at least one casting core is used. A through-channel leading through the through-opening of the cast piece is formed by burning the binder in the moulding material out of the casting core representing the through-opening by means of the heat input into the casting mould when pouring the molten metal into the casting mould, or by mechanically destroying, at least in part, the respective casting core representing the through-opening and the regions of the casting mould arranged in the extension of the casting core.
    Type: Application
    Filed: April 23, 2013
    Publication date: May 7, 2015
    Inventor: Klaus Arnold
  • Publication number: 20140166228
    Abstract: A method for removing a part from a mold and to a machine for molding said part, the part made of a material having a glass-transition temperature and a melting temperature that is higher than the glass-transition temperature, and which is shaped in the cavity of a mold, includes at least two mold portions defining said shaping cavity therebetween. The mold is at a temperature between said glass-transition temperature and said melting temperature. The method comprises opening the mold by spacing apart said mold portions, locally spraying a cooling gas toward the part remaining in a portion of the mold using at least one nozzle, and, after a predetermined time period following the start of spraying the gas, ejecting the part from said portion of the mold, the time period being such that the part reaches a temperature that is lower than the glass-transition temperature thereof.
    Type: Application
    Filed: June 1, 2012
    Publication date: June 19, 2014
    Inventors: Sebastien Gravier, Georges Kapelski, Jean-Jacques Blandin, Charles Josserond
  • Publication number: 20140116567
    Abstract: A pipe with a rib includes a pipe portion, and a rib portion formed inside the pipe portion. The rib portion includes a plurality of bent portions in accordance with bending of the pipe portion.
    Type: Application
    Filed: October 31, 2013
    Publication date: May 1, 2014
    Inventors: Yuichi FURUKAWA, Tsukasa KATO, Keiichi MORITA, Tetsuya NAKAJIMA, Jun YAOKAWA, Yasushi IWATA, Yoshio SUGIYAMA
  • Patent number: 8662142
    Abstract: A method and a device for remelting metal in an electric furnace includes forming a slag bath to form molten material electrodes. The molten metal of the material electrodes solidifies in block form in a crucible apparatus as a result of cooling in such a way that a block growth forms from a block base using a progressing solidification process, wherein the block base is heated by applying energy directly to the block base to influence the cooling process.
    Type: Grant
    Filed: June 11, 2010
    Date of Patent: March 4, 2014
    Assignee: Ald Vacuum Technologies GmbH
    Inventors: Ulrich Biebricher, Michael Protzmann, Gerhard Brückmann
  • Publication number: 20110303385
    Abstract: An improved and efficient method and apparatus for convective cooling of cast sand molds containing molten metal, utilizing vertically-arrayed cooling stations (preferably arranged on a plurality of shelves inside a housing enclosure for temporarily storing said sand molds during their cooling from a molten temperature level to a lower solidification temperature. A draft of cooling air is circulated through said stations in said housing whereby the time for solidifying the molten metal in said cast sand molds is reduced as compared with passive air cooling of said molds. Robot means are provided for moving hot sand molds from a feeding port in said housing to said shelves and for moving cooled sand molds from said shelves to a delivery port in said housing.
    Type: Application
    Filed: October 23, 2008
    Publication date: December 15, 2011
    Inventors: Gerardo Salinas-Pena, Mario Alberto Leon-Quezada, Jose Augusto Martínez-Ruiz, Ramiro Montero-Cantu
  • Patent number: 7448428
    Abstract: A Method of casting includes providing a mold having one or more article mold cavities. The mold is moved into a furnace. While the mold is in the furnace, the mold is filled with molten metal. After the mold has been removed from the furnace, a heater is positioned adjacent to the mold and heat is transmitted from the heater to the mold. The heater may include electrically energizable resistance type heating elements, or a source of radiant energy or a gas burner.
    Type: Grant
    Filed: October 14, 2005
    Date of Patent: November 11, 2008
    Assignee: PCC Airfoils, Inc.
    Inventors: Lawrence D. Graham, Scott T. Hill
  • Publication number: 20040168788
    Abstract: The invention invention provides an apparatus (10) and a method for reducing the volume of risers, and for the possibility of reducing shrinkage blowhole and porosity in shaped gravity casting. The invention provides an apparatus (10) for producing metal flow/stir in the liquid metal (31), the apparatus (10) comprising at least one electrode (16) for forming a continuously-moving plasma arc (34) over the upper surface of selected riser(s) (12) in metallic casting being cast, a stand (26) for suspending said plasma arc electrode (16) over the upper surface of said risers (12) during the casting process, a second electrode (28) attachable to the liquid metal (31) or the metal being used for casting and a power supply (36) for completion of an electric circuit including said plasma arc (34); and control means (38) connected between said apparatus (10) and said power supply (36).
    Type: Application
    Filed: January 20, 2004
    Publication date: September 2, 2004
    Inventors: Pavel Dvoskin, Valery Zlochevsky, Dror Nadam
  • Patent number: 6199618
    Abstract: In order to produce castings from cast iron with foliated graphite, the carbon content of the cast iron can be set at between approximately 3 and 4% by controlling the melting process of the type and/or operation of the melting furnace. The molten mass is then cast in a sand-casting or lost-form method. During conventional cooling, the known mechanical properties of the cooled cast are set. In order to improve these mechanical properties in terms of hardness and strength, the casting is released from its mold at a temperature ranging from 1,100° C. to 800° C. and is immediately subjected to a cooling treatment by being blasted with an air flow in order to cool it to below 723° C. in a given amount of time. The casting, in selected regions, is cooled to below 723° C. by specific intermittent bursts of air in a relatively short amount of time in order to produce a harder structure. The cooling treatment is stopped when the temperature at the eutectoid line of the iron-carbon diagram is reached.
    Type: Grant
    Filed: February 9, 1999
    Date of Patent: March 13, 2001
    Inventors: Michael Fenne, Oswald Holtz
  • Patent number: 5515903
    Abstract: A method is disclosed for making molds for use in injection molding wherein a cement replica is made of a pattern by curing the cement in a silicon rubber negative of the pattern, then pouring molten zinc or zinc alloy into a frame containing the cement replica. The cooling of the mold metal is controlled by the direct application of flame and frequent adjustments of clamps which firmly contact the mold to a solid surface.
    Type: Grant
    Filed: June 19, 1995
    Date of Patent: May 14, 1996
    Assignee: Multi-Products, Incorporated
    Inventors: John J. Hronas, Michael J. Hronas
  • Patent number: 5348071
    Abstract: The apparatus for casting comprises a pressure vessel and a device for pressurizing the vessel. The pressurizing device is in fluidic connection with the vessel. The apparatus is also comprised of a chamber disposed in the pressure vessel within which material is melted. There is a mold adapted to contain a preform disposed in the vessel and in fluidic connection with the chamber by a passage such that melted material in the chamber can be forced down into the mold through the passage as the pressurizing device pressurizes the vessel. A heating device is disposed in the vessel. There is also a device for directionally solidifying the material in the mold. Additionally, there is a method comprising the steps of loading the pressure vessel by disposing a material within the chamber whereby the material is in fluidic connection with the mold adapted to contain a preform through the passage. The passage has a filter disposed therein.
    Type: Grant
    Filed: June 15, 1993
    Date of Patent: September 20, 1994
    Assignee: PCC Composites, Inc.
    Inventor: Arnold J. Cook
  • Patent number: 5213149
    Abstract: A permanent metal mold (12) has a casting cavity (18) within which variable thickness molten metal articles (20) are cast. Portions (26) of the casting cavity walls (16) are formed oversized and lined with sand (44) to conform with the external size and shape of certain thick (46) and thin (48) sections of the cast article (20). The thickness of the sand liner (44) is reversely correlated to the thick (46) and thin (48) sections of the article (20) to cause these sections (46, 48) to cool at different rates in order to achieve an approximately equalized cooling time of these sections (46, 48). Other portions (50, 52) of the casting cavity walls (16) are formed bare of the sand liner (44) and conform with the external size and shape of other corresponding sections (54, 56) of the cast article (20).
    Type: Grant
    Filed: October 10, 1991
    Date of Patent: May 25, 1993
    Assignee: CMI International, Inc.
    Inventors: Gary F. Ruff, John W. Kuhn, Richard J. Wylie
  • Patent number: 4789022
    Abstract: A metal sheet or ribbon having a unidirectional crystalline structure is produced by continuous casting by the steps of feeding the molten metal to be cast onto the surface of a solidification support moving continuously in one direction along a given path, while heating the solidification support so that the surface thereof at the position for receiving the molten metal is at a temperature exceeding the solidification temperature of the metal being delivered thereto, and then cooling the delivered metal downstream of said position whereby the formation of crystal nuclei upon contact of the delivered molten metal is inhibited and the solid sheet or ribbon has a unidirectional crystalline structure conducive to ease in cold working without cracking.
    Type: Grant
    Filed: March 18, 1988
    Date of Patent: December 6, 1988
    Inventor: Atsumi Ohno
  • Patent number: 4770226
    Abstract: Machine for the continuous casting of metal in the form of at least two separate strips, comprising a tundish (1) supplied with liquid metal, a bottomless mold (2) supplied continuously by the tundish (1), and an extraction and secondary cooling device (4). The liquid metal is poured into a distributor vessel (3) interposed between the tundish (1) and the mold (2), the vessel (3) placed on the mold (2), secured to the latter and equipped with means of maintaining the metal at the casting temperature.
    Type: Grant
    Filed: May 28, 1986
    Date of Patent: September 13, 1988
    Assignee: CLECIM
    Inventor: Jacques Barbe
  • Patent number: 4457352
    Abstract: Air is caused to flow through the resin bonded mold to aid combustion of the resin binder to form a low BTU gas fuel. Casting heat is recovered for use in a waste heat boiler or other heat abstraction equipment. Foundry air pollution is reduced, the burned portion of the molding sand is recovered for immediate reuse and savings in fuel and other energy is achieved.
    Type: Grant
    Filed: April 19, 1982
    Date of Patent: July 3, 1984
    Inventor: Karl D. Scheffer
  • Patent number: 4325424
    Abstract: A low vacuum is applied to selected surface areas of a resin bonded sand mold to draw ambient air into selected portions of the mold. The air entering the mold burns out a significant portion of the resin binder to form a low BTU gas fuel and to recover casting heat for use in a waste heat boiler or other heat abstractions device. Therefore, foundry air pollution is reduced, the burned out portion of the molding sand is recovered for immediate reuse, and a savings in fuel and energy.
    Type: Grant
    Filed: March 14, 1980
    Date of Patent: April 20, 1982
    Inventor: Karl D. Scheffer
  • Patent number: 4300616
    Abstract: In casting of a cast-iron ingot mould in a sand mould, it is proposed to inject air into the moulding sand adjacent the lower end of the ingot mould, after the ingot mould surface has solidified. The injected air causes conversion of the perlite at the interior surface of the ingot mould into ferrite. This improves the resistance of this surface region to corrosion during casting of ingots in the ingot mould, thus prolonging the life of the ingot mould.
    Type: Grant
    Filed: May 22, 1979
    Date of Patent: November 17, 1981
    Assignee: Estel Hoogovens BV
    Inventors: Antonius J. Rooze, Jan den Best, Gerard J. Melman
  • Patent number: 4157728
    Abstract: A direct chill casting of metals, particularly hot top casting of aluminum and its alloy, is improved by applying a gas pressure to the metals from directly below the overhang of a feed reservoir for receiving a melt to be cast.The direct chill casting is further improved by supplying a lubricating oil from a slit for conveying the gas to the inner wall of the mold.By using the process and the apparatus according to the invention, ingots having excellent smooth surfaces and reduced segregation can be reliably produced with a reduction in the amount of the lubricating oil used.
    Type: Grant
    Filed: July 29, 1977
    Date of Patent: June 12, 1979
    Assignee: Showa Denko Kabushiki Kaisha
    Inventors: Ryota Mitamura, Tadanao Itoh
  • Patent number: 4045536
    Abstract: Disclosed is a method of preparing castings of bismuth, silicon and silicon alloys characterized by solidification expansion by cooling the molten material below its melting point to form a casting of the material within a suitable container. According to the disclosed method, a tapered liquid core with the smaller end downward and the larger end upward and a portion of the top of the casting, i.e., a liquid pool on top of the casting, are maintained in a molten state and in liquid communication with each other until the casting is substantially solidified, for example, by keeping the liquid pool on top molten by insulation or by heat addition or by both insulation and heat addition. Thereafter, the core and the top are allowed to solidify, providing a casting substantially free of defects.
    Type: Grant
    Filed: July 8, 1975
    Date of Patent: August 30, 1977
    Assignee: PPG Industries, Inc.
    Inventor: John F. Wallace
  • Patent number: 4020891
    Abstract: This invention sets forth an improved method of continuously casting a metal filament or fiber from molten liquid metal. The filament is formed by forcing the molten metal from a melt pot through an orifice and solidifying the molten metal jet into a filament while it is moving in a cooling atmosphere. As the solid filament moves with respect to the gas atmosphere, the gas by friction with the surface of the filament will exert a force on the filament, either acceleration or deceleration depending on whether the gas is flowing with a velocity greater or less than the filament velocity. The invention sets forth parameters defining the relations that must exist between the filament velocity and cooling gas velocity which give rise to acceleration and deceleration forces and whose magnitudes determine the formation of continuous filament or fibers.
    Type: Grant
    Filed: November 11, 1974
    Date of Patent: May 3, 1977
    Assignee: Brunswick Corporation
    Inventor: Ralph P. I. Adler
  • Patent number: 4007771
    Abstract: Aluminum is produced from low-grade aluminum alloys by melting an Al-X alloy wherein X has a higher specific weight than aluminum and forms an eutectic mixture rich in aluminum, the starting melt being on the side of the eutectic mixture rich in aluminum, and radially cooling the melt from the inside to the outside while under the effect of centrifugal force.
    Type: Grant
    Filed: January 13, 1975
    Date of Patent: February 15, 1977
    Inventor: Matthias Welsch