Dispensing Into Horizontal Mold Patents (Class 164/440)
  • Patent number: 10807156
    Abstract: A method for producing an austenitic stainless steel slab by continuous casting of an austenitic stainless steel, including applying electric power to the molten steel in a depth region providing a solidification shell thickness of from 5 to 10 mm at least at a center position in the long edge direction, so as to cause flows in directions inverse to each other in the long edge direction on both long edge sides, thereby performing electro-magnetic stirring (EMS) to control a continuous casting condition satisfying 10<?T<50×FEMS+10. Herein, ?T represents a difference between an average molten steel temperature (° C.) and a solidification starting temperature (° C.) of the molten steel, and FEMS represents a stirring intensity index shown by a function of a molten steel flow velocity in the long edge direction imparted by the electro-magnetic stirring and a casting velocity.
    Type: Grant
    Filed: March 14, 2018
    Date of Patent: October 20, 2020
    Assignee: NIPPON STEEL STAINLESS STEEL CORPORATION
    Inventors: Yasuhiro Ehara, Shun Saito, Kazunari Morita, Hiroshi Morikawa
  • Publication number: 20150030495
    Abstract: A pivotable tundish (1) for continuous casting a metal alloy. The tundish comprises a body (3) comprising a first chamber (5), a second chamber (7), a first passage (12) between the first chamber and the second chamber, and a second passage (16) between the second chamber and a mold (9). The first chamber is adapted to receive and hold a base metal constituting the base for forming the metal alloy by addition of alloying elements. The metal alloy is fed from the second chamber to the mold through the second passage. The second chamber further comprises a first portion (30) and a second portion (32), and a third passage (36) between the first portion and the second portion. In the casting state the metal alloy is formed while casting by adding the alloying elements to the second portion of the second chamber.
    Type: Application
    Filed: February 10, 2012
    Publication date: January 29, 2015
    Applicant: Luvata Espoo Oy
    Inventor: Sarita Hernesniemi
  • Patent number: 8776863
    Abstract: A molten metal pouring nozzle capable of preventing reaction with a molten metal and casting a high quality ingot continuously for a long period of time is provided. A molten metal pouring nozzle 20 arranged between a molten metal receiving portion 10 and a mold 40 of a continuous casting device 1 is equipped with a main body portion 22 having at least one molten metal passage 21 and made of a fire-resistant substance, and a sleeve 23 made of a material which does not react with the molten metal and having a heat conductivity of 10 to 30 W/(m·° C.) is fitted in the molten metal passage 21 of the main body portion 22.
    Type: Grant
    Filed: December 17, 2008
    Date of Patent: July 15, 2014
    Assignee: Showa Denko K.K.
    Inventor: Masashi Fukuda
  • Patent number: 8485244
    Abstract: A continuous casting device capable of giving lubricating property to a molten metal pouring nozzle without increasing lubricating oil and performing casting with high casting surface quality for a long period of time is provided. In a continuous casting device 1 in which a molten metal pouring nozzle 20 is arranged between a molten metal receiving portion 10 and a mold 40, the molten metal pouring nozzle 20 is equipped with a cylindrical main body portion 22 made of a fire-resistant substance and having a molten metal passage 21, and an annular member 30 having self-lubricating property is arranged on a mold-side end face 23 of the main body portion 22 so as to surround the molten metal passage 21.
    Type: Grant
    Filed: December 4, 2008
    Date of Patent: July 16, 2013
    Assignee: Show Denko K.K.
    Inventors: Masashi Fukuda, Masatoshi Fukushima
  • Patent number: 8302663
    Abstract: The invention relates to a casting nozzle for a horizontal strip casting system, especially for casting steel strip. The casting nozzle is connected to a feed channel and is designed as a rectangular refractory hollow block, the outlet region of which being only slightly above the cooled continuous belt which accommodates the outflowing melt. The hollow block is subdivided at least once in the direction of casting and a narrow sealing element is arranged on the partition side of the segments, the width of the remaining gaps in the partition area being selected as to close when the casting nozzle is operated.
    Type: Grant
    Filed: February 15, 2010
    Date of Patent: November 6, 2012
    Assignees: Salzgitter Flachstahl GmbH, SMS Siemag AG
    Inventors: Hellfried Eichholz, Sven Klawiter, Rune Schmidt-Jürgensen, Karl-Heinz Spitzer, Hans-Jürgen Hecken, Jochen Schlüter
  • Patent number: 8210235
    Abstract: A mold (10) for the continuous casting of metal including a cooled running surface (11) and a guide (12) for molten metal. The guide is made of a refractory material and is disposed upstream of the running surface (11) in the direction of flow. The guide (12) is radially prestressed.
    Type: Grant
    Filed: August 28, 2008
    Date of Patent: July 3, 2012
    Assignee: Gautschi Engineering GmbH
    Inventors: Oliver Moos, Rudolf Bosshard
  • Patent number: 8122938
    Abstract: Exemplary embodiments of the invention provide a side dam for a continuous metal casting apparatus having elongated opposed casting surfaces forming a casting cavity. The side dam has an elongated upstream part and an elongated downstream part that are mutually laterally pivotable, and a smooth metal-contacting side surface extending continuously from an upstream end to a downstream end of the side dam. The surface has regions thereof formed on the upstream part and the downstream part. Mutual pivoting of the upstream part and the downstream part of the side dam enables the regions of the smooth metal-contacting side surface to be moved out of mutual coplanar alignment. The side dams can therefore be used to form either a convergent or divergent casting cavity to assists the casting procedure and to enhance the properties of the cast article.
    Type: Grant
    Filed: March 24, 2010
    Date of Patent: February 28, 2012
    Assignee: Novelis Inc.
    Inventors: Edward Luce, Eric Lees, Kevin Gatenby, Daniel Godin, Rejean Leblanc
  • Patent number: 7637306
    Abstract: A continuous casting apparatus, continuous casting method and aluminum alloy cast bar enable stable and smooth high-speed casting with a reduced amount of a lubricant and prevent occurrence of breakout and lubricant reaction products, resulting in reduction in ingot failure.
    Type: Grant
    Filed: October 25, 2005
    Date of Patent: December 29, 2009
    Assignee: Show A Denko K.K.
    Inventors: Masashi Fukuda, Masatoshi Fukushima
  • Patent number: 7575041
    Abstract: Horizontally continuously cast aluminum alloy rods excellent in quality are efficiently manufactured using a melting/holding furnace (101) to produce molten aluminum alloy, a molten-metal treatment apparatus (201) to remove aluminum oxide and hydrogen gas from the molten aluminum alloy, a horizontally continuously casting apparatus (301) to cast the treated molten aluminum alloy into horizontally continuously cast aluminum alloy rods, a cutting machine (408A, 408B) to cut to a standard length the cast rods, a first straightening apparatus (1001) to straighten bend of the cut rods, a peeling apparatus (1101) to peel skin portions of the straightened rods, a nondestructive inspection apparatus (1401) to inspect surface and internal portions of the peeled rods, a sorting apparatus (1501) to sort the inspected rods judged non-defective based on results of the nondestructive inspection step and a packing apparatus to pack the sorted rods, and continuously using at least the first straightening apparatus (1001) et
    Type: Grant
    Filed: March 26, 2004
    Date of Patent: August 18, 2009
    Assignee: Showda Denko K.K.
    Inventors: Yasuhide Odashima, Satoshi Fujii, Shigeru Yanagimoto
  • Patent number: 7143809
    Abstract: Equipment for continuous, horizontal casting of metal, in particular aluminum. The horizontal casting equipment includes an insulated reservoir or pool (2), which is designed to contain liquid metal, and a releasably attached mold (3) that can be removed from the reservoir (2). An insulating plate (19) is provided with holes (25, 26) which communicate with the mold. The mold (3) includes a preferably circular mold cavity (17) having a wall (12, 13) of permeable material for the supply of oil and gas. The wall provides primary cooling to the metal being cast and at least one slit or nozzles (16) arranged along the circumference of the cavity for the direct supply of coolant, thereby providing secondary cooling of the metal. The primary cooling is so designed that it may be increased or reduced. The insulating plate (19) is replaceable and, depending on the type of alloy and the cooling required, the plate may be designed to extend along the permeable material (12, 13) in the cavity (17).
    Type: Grant
    Filed: June 26, 2000
    Date of Patent: December 5, 2006
    Assignee: Norsk Hydro ASA
    Inventors: Inge Johansen, Geir Mæland, Åge Strømsvåg
  • Patent number: 7143810
    Abstract: Equipment for continuous, horizontal casting of metal, in particular aluminum. The equipment includes an insulated reservoir or pool (2), which is designed to contain liquid metal, and a mold (3), which can be removed from the pool (2). An insulating plate (19) is provided with holes (25, 26) which communicate with the mold. The mold (3) includes a preferably circular cavity (17) defined by a wall (12, 13) of permeable material for the supply of oil and at least one annular slit or nozzle (16) arranged along the circumference of the cavity for the direct supply of coolant. In addition to the oil, gas can be supplied through the permeable material (12, 13) and annuli (20) are arranged between the permeable wall material and the mold housing (8) to distribute the gas/oil to the wall material.
    Type: Grant
    Filed: June 26, 2000
    Date of Patent: December 5, 2006
    Assignee: Norsk Hydro ASA
    Inventors: Inge Johansen, Geir Mæland, Åge Strømsvåg
  • Patent number: 7077186
    Abstract: A mold for horizontal casting of molten metal comprising a mold body forming an open-ended mold cavity having an inlet end and an outlet end. An annular permeable wall member is mounted in the mold body adjacent the inlet end of the mold cavity with an inner face thereof forming an interior face of the mold. A refractory transition plate is mounted at the inlet end of the mold cavity, this transition plate providing a mold inlet opening having a cross-section less than that of the mold cavity. This provides an annular shoulder at the inlet end of the cavity. Means are provided for feeding molten aluminum through the inlet opening. Separate conduits are also provided for feeding a gas into the shoulder and via the permeable wall means for providing a layer of gas between the metal and the inner face of the mold. A gas that is more reactive with molten aluminum is fed into the shoulder and a less reactive gas is fed via the permeable wall.
    Type: Grant
    Filed: December 11, 2003
    Date of Patent: July 18, 2006
    Assignee: Novelis Inc.
    Inventors: Wade Lee Bowles, Jack Hamby, Alexander J. Fischer, David A. Salee
  • Patent number: 7028750
    Abstract: The invention relates to an apparatus for continuous casting of metal billets comprising a horizontal casting mold having and inlet end and an outlet end. It includes a feed trough for feeding molten metal to the mold inlet end and a horizontal conveyor for receiving a cast billet from the mold outlet end. A moveable cutting saw is operable to move synchronously with the conveyor for cutting a continuous billet into lengths while supported on the conveyor. The billet is resiliently supported and the saw mechanism is isolated so as to minimize transmission of low and high frequency vibrations from the cutting and conveying operations to the mold.
    Type: Grant
    Filed: December 11, 2003
    Date of Patent: April 18, 2006
    Assignee: Novelis, Inc.
    Inventors: Wade Lee Bowles, James Borman, Jack Hamby, Michael Kosmicki, John Steven Tingey, John David Treffry
  • Patent number: 7004229
    Abstract: An apparatus is described for starting and stopping a horizontal casting machine, e.g. a caster for continuous casting of metal ingots. The caster comprises a feed trough for carrying molten metal, at least one casting mould and a connecting trough separately connecting each casting mould to the feed trough. A shutoff gate is associated with each connecting trough and movable between an open position and a closed position. Each connecting trough includes a drop-down portion located between the shutoff gate and the casting mould, this drop-down portion being adapted to swing downwardly and thereby rapidly drain molten metal from the connecting trough and an entrance of the mould. The apparatus may also include an elongated starter block, adapted to be inserted into the casting mould and having a threaded recess formed therein for receiving molten metal. An O-ring is fitted to the starter block to seal the block against the casting mould.
    Type: Grant
    Filed: December 11, 2003
    Date of Patent: February 28, 2006
    Assignee: Novelis, Inc.
    Inventors: David A. Salee, Jack Hamby, Wade Lee Bowles, John Steven Tingey
  • Patent number: 6994149
    Abstract: A casting system for pouring nonferrous metal molten masses, in particular copper or copper alloys, has a tundish and a submerged pipe feeding into a molten bath inside a thin-slab mold. Trouble-free discharge of the melt into the mold and degassing at the exposed surface of the mold is ensured. The submerged pipe leading from the tundish along a pre-defined pouring angle has first and second sections. The latter is a tip nozzle that submerses into the molten bath. It has at its wall facing the mold bottom one or more discharge openings effecting a change in the flow direction of the molten mass. A lip at the tip nozzle is spaced so as to overlap the discharge opening, to cause a second flow direction change and lateral distribution. The discharge opening and the lip are disposed inside the mold bath, below a bath surface, during operation.
    Type: Grant
    Filed: July 8, 2004
    Date of Patent: February 7, 2006
    Assignee: Hof Te Fiennes N.V.
    Inventor: Leon Raphael Lucienne G. Cloostermans
  • Patent number: 6923246
    Abstract: A billet for a thixocasting process and a thixocasting process using the billet allows casting using a thixocasting process to be realized at low production cost without permeation of an oxide film to the inside of the billet in injection molding. In a billet used for a thixocasting process continuously cast by intermittently drawing out, the interval of the oscillation marks is 10 mm or less and the maximum tilt angle of the oscillation marks relative to a cross section which is at a right angle to the drawing out direction is 45° or less.
    Type: Grant
    Filed: March 28, 2003
    Date of Patent: August 2, 2005
    Assignees: Honda Giken Kogyo Kabushiki Kaisha, Kogi Corporation
    Inventors: Masayuki Tsuchiya, Hiroaki Ueno, Yasushi Fujinaga, Chiaki Ushigome, Susumu Nishikawa
  • Patent number: 6915837
    Abstract: A molten metal supply system (90) includes a plurality of injectors (100) each having an injector housing (102) and a reciprocating piston (104). A molten metal supply source (132) is in fluid communication with the housing (102) of each of the injectors (100). The piston (104) is movable through a first stroke allowing molten metal (134) to be received into the housing (102) from the molten metal supply source (132), and a second stroke for displacing the molten metal (134) from the housing (102). A pressurized gas supply source (144) is in fluid communication with the housing (102) of each of the injectors (100) through respective gas control valves (146). The molten metal supply system (90) is in fluid communication with an outlet manifold (140) having a plurality of outlet dies (404), which may be used to form continuous metal articles including rods, bars, ingots, and continuous plate.
    Type: Grant
    Filed: February 3, 2004
    Date of Patent: July 12, 2005
    Assignee: Alcoa Inc.
    Inventors: Vivek M. Sample, Scott E. Reighard, Vincent A. Paola, Ronald G. Chabal
  • Patent number: 6554055
    Abstract: An apparatus for the horizontal continuous casting of profiles includes a receptacle for molten metal and an ingot mold connectable to the receptacle by a ramming frame. The ingot mold forms a casting gap having a refractory lining that cannot be wetted by the molten metal. An oscillation drive oscillates the ingot mold in a casting direction and is supported on the receptacle and on the ingot mold. A sliding guide associated with the receptacle and extending in the casting direction supports the ingot mold, and a web is arranged in a transition area between the receptacle and the ingot mold, the web being prestressed with a minimum pressure corresponding to the hydraulic pressure of the molten metal and consisting of refractory fibers that cannot be wetted by the molten metal, to provide a seal against the molten metal.
    Type: Grant
    Filed: September 15, 2000
    Date of Patent: April 29, 2003
    Inventor: Roland Leder
  • Patent number: 6450239
    Abstract: In the operation of a horizontal strip casting facility, each lengthwise segment of a metal strip is continuously scanned in a fan shape across the entire width of the metal strip, immediately after emerging from a mold associated with a furnace. An infrared scanner is used to perform the scan, and passes temperature values, taking into consideration the emissivity values corresponding to the material being cast, to a computer. In the computer, on the basis of those temperature values, a color-graded graphic diagram and/or a temperature profile diagram depicting the temperature over the width of the metal strip are created and displayed on at least one monitor. The speed of the metal strip, the volumes of cooling water for the mold, the withdrawal parameters, and the melt temperature in the furnace are controlled as a function of the temperature profile that is ascertained.
    Type: Grant
    Filed: September 9, 1999
    Date of Patent: September 17, 2002
    Assignee: KM Europa Metal AG
    Inventors: Anwar von Sroka, Hartmut Oelmann
  • Patent number: 6363999
    Abstract: A variable tip width adjustment system for use in continuous casting of a molten metal includes a feed tip nozzle downstream from a distribution box, the nozzle including a pair of feed tip nozzle members spaced apart to define a feed tip opening at a downstream edge of the feed tip nozzle members and a pair of end dams located on a drive side and an operator side of the roll casters, the end dams slidably engaged inside the tip nozzle, each dam being axially moveable in two directions inside the tip nozzle. The end dams are preferably actuated using a programmable controller and a stepper motor that is responsive to the signals of the programmable controller. The stepper motor is preferably connected to the end dam via flex connector and a connecting guide rod directed through a guide tube.
    Type: Grant
    Filed: March 23, 2000
    Date of Patent: April 2, 2002
    Assignee: Fata Hunter, Inc.
    Inventor: Dennis M. Smith
  • Patent number: 5915455
    Abstract: An apparatus is disclosed for horizontal direct chill casting of light metals, especially magnesium and magnesium alloys. The apparatus includes tundish for containing molten metal and a horizontally disposed mold in communication with the tundish. The mold has a primary cooling circuit for cooling mold walls such that the metal is chilled without any direct contact with the water. Also, a secondary direct cooling circuit is provided. The circuits for primary and secondary cooling water are independent of each other. An insulating transition ring is arranged at the mold entrance. It is important that the total mold depth is short, preferably between 25 and 45 mm. To obtain good surface quality and to avoid discoloring of the metal, it is preferred that the mold has an inlet for supplying protective gas to the transition ring. The inlet opening to the mold should be asymmetrically arranged, nearer the bottom of the mold.
    Type: Grant
    Filed: September 9, 1996
    Date of Patent: June 29, 1999
    Assignee: Norsk Hydro a.s.
    Inventors: Bj.o slashed.rn Kittilsen, Bj.o slashed.rn iestad
  • Patent number: 5873403
    Abstract: A continuous casting installation with a heatable, pressure-regulated multiple-chamber furnace and a furnace-dependent mold for casting a molten metal. The pressure ratios in the pressure chamber of the furnace are regulated in accordance with its degree of fullness by a pressure generating device in order to maintain a constant metallostatic pressure in the mold chamber of the furnace. In order to improve the reliability with which the filling state is determined, the mold is fitted statically to a furnace-independent supporting frame and the multiple-chamber furnace is dynamically supported on a weighing device. Additionally, the mold is connected with the multiple-chamber furnace in a frictional engagement via a compressible seal.
    Type: Grant
    Filed: April 2, 1997
    Date of Patent: February 23, 1999
    Assignee: Mannesmann Aktiengesellschaft
    Inventors: Erling Roller, Gunter Phillipps
  • Patent number: 5799722
    Abstract: Material is fed in a feed direction along an assembly vibrations are simultaneously applied to the assembly in both a direction at an acute angle to the feed direction and in a direction along the feed direction. The vibration is preferably applied in both directions using two vibrators with the same working phase. The productivity of the apparatus is increased, the quality of the continuous cast considerably improved and the continuity of the process is insured as compared with known methods and apparatus.
    Type: Grant
    Filed: January 16, 1996
    Date of Patent: September 1, 1998
    Inventors: Boris Buziashvili, Zurab Buziashvili
  • Patent number: 5743323
    Abstract: A continuous casting apparatus comprises continuously supplying molten metal from a tundish to a cooled mold having an inlet and an outlet at least through a break ring, forming a cast section by continuously cooling the molten metal in the mold and starting the solidification of the molten metal below its surface, and intermittently withdrawing the cast section with respect to the mold through its outlet. During continuous casting, a sealing gas having a pressure higher than atmospheric and being soluble in the molten metal is invariable supplied to the entirety of the contact area of the mold and the break ring.
    Type: Grant
    Filed: April 25, 1994
    Date of Patent: April 28, 1998
    Assignees: Nippon Steel Corporation, Kawasaki Jukogyo Kabushiki Kaisha
    Inventors: Haruo Ohguro, Toshihiro Kosuge, Katsuhiko Kawamoto, Ryuuzou Hanzawa, Shogo Matsumura, Hiroyuki Kawai, Hiroyuki Nakashima, Yukio Morimoto, Youji Ao, Tsutomu Fujii, Hideo Kaneko, Hatsuyoshi Kumashiro
  • Patent number: 5671800
    Abstract: Process and apparatus for continuous casting of metal strip in which a layer of liquid parting agent, and any solid detritus contained therein, is completely removed from a casting surface of a rotating belt after contact with the metal, and in which a new layer of liquid parting agent is applied to the casting surface thereafter and prior to renewed contact with the molten metal. The removal of used parting agent and the application of fresh helps to present the formation of surface blemishes and defects on the cast metal strip product. Such blemishes and defects can also be minimized by using an injector having a flexible tip used to inject the molten metal onto the casting surface and preferably one or more spacers to create a gap between the tip and the casting surface itself. The spacer is preferably a screen of wire strands orientated to minimize disruption of the new layer of liquid parting agent applied to the casting surface.
    Type: Grant
    Filed: June 1, 1995
    Date of Patent: September 30, 1997
    Assignee: Alcan International Ltd.
    Inventors: John Sulzer, Olivo Giuseppe Sivilotti, Ronald Roger Desrosiers
  • Patent number: 5595237
    Abstract: The invention is directed to a device for the horizontal continuous casting of metals having a holding furnace with a horizontally extending outlet conduit arranged in a side wall of the holding furnace, a graphite mold associated with the outlet conduit, and a cooling structure which encloses the mold and is flanged to a casing of the holding furnace. In order to provide a uniform flow of metal in the inlet region of the mold, a flow restricting structure is arranged inside the outlet conduit of the holding furnace. The restricting member is made of refractory material and defined with an interior surface of the outlet conduit a melt passage. The restricting structure is dimensioned such that the cross-sectional profile or area of the melt passage is smaller than the cross-sectional surface of the mold cavity.
    Type: Grant
    Filed: October 5, 1995
    Date of Patent: January 21, 1997
    Assignee: Mannesmann Aktiengesellschaft
    Inventor: Eberhard Fischer
  • Patent number: 5564488
    Abstract: The apparatus includes a pouring ladle with a sealable bottom opening and a distributing channel arranged beneath the ladle for the purpose of storing molten metal. The distributing channel is provided with at least two bottom openings that are openable and closable in a controlled manner. A separate tub-shaped basin is arranged beneath each bottom opening of the distributing channel and at least one mold is detachably connected to a bottom portion of each of the tub-shaped basins.
    Type: Grant
    Filed: June 22, 1994
    Date of Patent: October 15, 1996
    Assignee: Mannesmann Aktiengesellschaft
    Inventors: Joachim V. Schnakenburg, Franz Keutgen, Dieter Perings, Heinz-Josef Leuwer, Rudiger Winterhager, Peter Stadler
  • Patent number: 5458183
    Abstract: A continuous casting method includes the steps of continuously supplying molten metal into a mold through at least one feed nozzle connected to the mold through a break ring, with the feed nozzle, the mold and the break ring forming at least a portion of a continuous casting apparatus, and intermittently withdrawing a cast piece formed from the molten metal in the mold thereby creating pressure in a space formed at a connecting point between the break ring, the mold and the cast piece as a result of the withdrawal from the mold. A shield means is placed to seal-off space between the at least one feed nozzle, and the mold to prevent entry of gas into the continuous casting apparatus and the pressure is reduced in the sealed-off space to thereby eliminate a pressure differential between the pressure in the sealed-off space and the pressure created in the space formed at the connecting point between the break ring, the mold and the cast piece during the intermittent withdrawal from the mold.
    Type: Grant
    Filed: April 12, 1994
    Date of Patent: October 17, 1995
    Assignee: Nippon Steel Corporation
    Inventors: Tatsuhito Matsushima, Seishiro Saita, Masayuki Inoue, Hiroyuki Nakashima, Shogo Matsumura, Hiroshi Iwasaki, Ryuuzou Hanzawa, Katsuhiko Kawamoto, Haruo Ohguro, Yukio Morimoto, Toshihiro Kosuge
  • Patent number: 5431214
    Abstract: A cooling mold has first and second water cooling jackets provided inside the mold. A primary cooling water jetting mouth is located at a distance between 15 and 40 mm from the meniscus of the molten metal. A secondary cooling water jetting mouth is located at an interval of 20 to 45 mm between a contact point of a primary jet of cooling water and another contact point of a secondary jet of cooling water on an ingot. The primary and secondary cooling water jetting mouths are respectively set at an angle of 15 to 30 degrees and of 30 to 60 degrees relative to the ingot surface. The primary jet of cooling water from the primary mouth impinges on the molten metal cooled in the cooling mold at a distance from the meniscus to establish a transition boiling zone and a film boiling zone. The secondary jet of cooling water impinges on initial zones of the transition boiling zone and the film boiling zone to break-out a vapor film.
    Type: Grant
    Filed: November 30, 1994
    Date of Patent: July 11, 1995
    Assignee: Yoshida Kogyo K.K.
    Inventors: Norio Ohatake, Makoto Arase, Yoshitaka Nagai
  • Patent number: 5392843
    Abstract: An improvement in systems for continuous casting steel to near net shape sheet or plate directly from molten metal. This is accomplished by floating the liquid steel on a liquid substrate of silver, allowing it to solidify and withdrawing a continuous section of thin, wide steel. Liquid to liquid casting, by eliminating the mechanical problems of thin sheet casting with wheels or belts, allows for increased tonnage rates. For example, aiming at a thickness of 3 mm. by a width of 1500 mm., a liquid steel to liquid silver caster in continuous production at 200 feet per minute will produce 750,000 tons per annum. Increased cast speeds and/or multiple lines due to simple construction seem practicable for greater tonnage. Only liquid silver, as a float medium, makes high quality float casting of molten steel possible.
    Type: Grant
    Filed: March 25, 1993
    Date of Patent: February 28, 1995
    Inventor: James J. Dolan
  • Patent number: 5377743
    Abstract: A mold for horizontal continuous casting of steel to form large-format slab cross sections, particularly flat products, includes a water-cooled metal casing forming the mold cavity for a slab and a brake ring for the melt feed which is supported at the mold on the pour-in side and connects the mold with a melt supply vessel (distributor) via a connecting casting tube. In order to provide an inexpensive and particularly stable mold, the mold is closed on the pour-in side by a metal plate along a part of the free cross-sectional area of the mold cavity. The plate has one or more openings for receiving a break ring. An end plate which overlaps the metal plate is arranged in front of the metal plate in surface contact with the metal plate. The end plate is provided with openings which coincide with the openings in the metal plate with respect to position and number. Ducts for guiding cooling water are incorporated in the end plate.
    Type: Grant
    Filed: July 16, 1993
    Date of Patent: January 3, 1995
    Assignee: Mannesmann Aktiengesellschaft
    Inventors: Joachim V. Schnakenburg, Dieter Perings, Siegbert Wagner, Franz Keutgen, Rudiger Winterhager, Peter Stadler
  • Patent number: 5373890
    Abstract: A molten metal stored in a heat-reserving furnace is maintained at a constant temperature by heating the molten metal by a heating source. The molten metal in the heat-reserving furnace is then introduced into a mold by passing the molten metal through a gate made of a refractory with the molten metal then passed through a casting space in the horizontal direction, to thereby cast a cast block.
    Type: Grant
    Filed: December 7, 1993
    Date of Patent: December 20, 1994
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Yoshihiro Taketsu, Eichi Miyazu, Iwao Asamizu, Naotake Wada, Kenji Kubozono
  • Patent number: 5360054
    Abstract: A horizontal continuous casting apparatus comprises, in one aspect, a tundish in which a molten metal material is stored, a mold assembly connected air-tightly to the tundish for casting a round billet, and an extraction device disposed on a downstream side of the mold assembly for forming a billet having a predetermined shape from the round billet fed from the mold assembly. The extraction device comprising a plurality of formation roll units arranged along a casting direction of the round billet and the formation roll units are composed of horizontal circular roll pairs, press units for pressing the roll pairs against the round billet and drive units for driving the roll pairs.
    Type: Grant
    Filed: October 6, 1992
    Date of Patent: November 1, 1994
    Assignee: Kawasaki Jukogyo Kabushiki Kaisha
    Inventors: Hideo Kaneko, Hatsuyoshi Kumashiro
  • Patent number: 5358028
    Abstract: A horizontal multiple-strand continuous casting plant and a method of operating the plant. The casting plant includes a distributor with several molds and a corresponding strand drawing unit which conveys the individual strands out of the molds by means of pulling movements and return pushing movements, wherein the strands can be individually clamped within the strand drawing unit. The strand drawing unit includes two clamping devices which alternatingly carry out the pulling movements and the return pushing movements. In the event of an interruption in one of the molds, the method includes connecting in a frictionally engaging manner the strand located in the affected mold to one of the two clamping devices of the strand drawing unit by actuating the corresponding clamping device only during at least one return pushing movement, and disconnecting from this strand the second clamping unit during the pulling movement thereof.
    Type: Grant
    Filed: June 10, 1993
    Date of Patent: October 25, 1994
    Assignee: Mannesmann Aktiengesellschaft
    Inventors: Franz Keutgen, Heinz-Josef Leuwer, Dieter Perings, Joachim Von Schnakenburg, Dietmar Zebrowski, Peter Stadler, Rudiger Winterhager
  • Patent number: 5355936
    Abstract: An adjustable mold for a horizontal continuous casting apparatus includes an airtight cylindrical-shaped mold tube and an adjustable mold divided into a plural number of cooling plates in the direction of the periphery of the casting section and arranged after the airtight cylindrical-shaped mold tube. The plural number of cooling plates of the adjustable mold are able to move in the direction of the casting section radius. The inlet ends of each of the cooling plates of the adjustable mold are supported by support shafts that can have their position determined so that an inner diameter of an outlet end of the airtight cylindrical-shaped mold tube and an inner diameter of an inlet end of the adjustable mold can be brought into agreement.
    Type: Grant
    Filed: July 1, 1993
    Date of Patent: October 18, 1994
    Assignees: Kawasaki Jukogyo Kabushiki Kaisha, Nippon Steel Corporation
    Inventors: Hastuyoshi Kumashiro, Taizou Kiyosuke, Jiro Arashi, Toshihiro Kosuge, Kazuaki Sueoka
  • Patent number: 5350008
    Abstract: A mold assembly for a thermo-mold continuous casting apparatus which has a casting furnace and a thermo-mold chamber provided with an outlet. The assembly has a first mold member changeably or replaceably mounted within the thermo-mold chamber and being provided with a casting cavity and an enlarged cavity therein. A second mold member is mounted within the thermo-mold chamber and connected to the first mold member. The second mold member is provided with a cavity channel therein communicating with the enlarged cavity of the first mold member, and separating means in the cavity channel for separating the residual metal in the first and second mold members when the casting procedure in the thermo-mold continuous casting apparatus is stopped. An air inlet may be arranged on the thermo-mold chamber to introduce a protective air into the thermo-mold chamber upon changing the first mold member.
    Type: Grant
    Filed: July 30, 1993
    Date of Patent: September 27, 1994
    Assignees: Industrial Tech. Research Institute, OCC Research Center Inc.
    Inventors: Jia-Chin Liu, Shu-Fahr Chang, Shyue-Sheng Wu, Yen-Cheng Cheng
  • Patent number: 5348072
    Abstract: A continuous casting plant for the horizontal casting of steel in several strands includes a casting ladle with two discharge openings provided in the bottom of the casting ladle. Each discharge opening is provided with a closure device. Each discharge opening has at least one tundish channel provided with at least one outlet opening. A mold fixedly attachable to the tundish channel is arranged in axial alignment with each outlet opening. Each tundish channel is mounted with the corresponding mold or molds on a tundish car. The tundish cars are movable underneath the casting ladle horizontally and transversely of the casting direction on a track formed by rails between a preparation position and a casting position. Between the preparation position and the casting position, the rails have rail sections which are displaceable from the rail travel direction. The length of the rail sections is such that the rail sections can receive one of the tundish cars.
    Type: Grant
    Filed: February 22, 1993
    Date of Patent: September 20, 1994
    Assignee: Mannesmann Aktiengesellschaft
    Inventors: Franz Keutgen, Heinz-Josef Leuwer, Dieter Perings, Peter Stadler, Rudiger Winterhager
  • Patent number: 5273100
    Abstract: Apparatus for the continuous casting of metals and of steel in particular, which is suitable for vertical, curved or almost horizontal casting and comprises in association with a main ingot mold (10) a downstream mold (12) positioned immediately downstream of the main ingot mold (10) and consisting of a plurality of independent elements, the downstream mold (12) being cooled with water, the apparatus providing for the formation of ingots with a round, oval, square or like section, the downstream mold (12) consisting of a plurality of independent, movable shell elements (15) which can align themselves and have sides (17) not parallel to the direction of sliding of the metal, the sides (17) of each shell element (15) delimiting in conjunction with the sides (17) of the neighboring shell elements (15) clefts (18) which have a development not parallel to, or according to a spiral in relation to, the axis and surface of the ingot being formed.
    Type: Grant
    Filed: November 17, 1992
    Date of Patent: December 28, 1993
    Assignee: Danieli & C. Officine Meccaniche
    Inventor: Stefano Arici
  • Patent number: 5267604
    Abstract: A control system in combination with a horizontal continuous caster includes a casting system drive motor having a control loop operative thereon which also includes a start of stroke board. A cam selection system provides for application of individual cam profiles to the control loop of the motor. A display system provides display of the individual applied cam profiles and actual casting motion. Additional monitoring systems provide direct control of multiple system functions during the casting process. The control system based on velocity versus time is simplified in construction and provides rapid and precise control.
    Type: Grant
    Filed: November 1, 1990
    Date of Patent: December 7, 1993
    Assignee: Steel Casting Engineering, Ltd.
    Inventors: Ralph Kuttner, Timothy J. McGrath
  • Patent number: 5236346
    Abstract: A tundish for molten metal having a front wall with an opening is provided. A plate with an opening is fitted into the opening in the front wall and retained therein. By replacing the plate with a plate with a plate having an opening at a different vertical level, the tundish can feed horizontal continuous casting molds of different levels.
    Type: Grant
    Filed: February 19, 1992
    Date of Patent: August 17, 1993
    Assignee: Davy McKee (Sheffield) Limited
    Inventor: David Stonecliffe
  • Patent number: 5228496
    Abstract: A cast starting method in horizontal continuous casting, including the steps of locating an orifice plate having an orifice between a molten metal outlet of a tundish and a mold, the orifice plate being formed on its front side with a recess expanded in a range surrounding an outlet of the orifice, locating a starting block in the mold to let a rear end surface of the starting block contact a front surface of the orifice plate to define a closed space by the recess, locating a starting pin in the closed space at a position not aligned to the outlet of the orifice, letting a molten metal flow from the tundish through the orifice into the closed space, and drawing the starting block with the molten metal after solidified out of the mold.
    Type: Grant
    Filed: April 29, 1992
    Date of Patent: July 20, 1993
    Assignee: Yoshida Kogyo K.K.
    Inventors: Yoshitaka Nagai, Makoto Arase, Norio Ohatake
  • Patent number: 5215142
    Abstract: A horizontal continuous casting system includes a tundish having a refractory lining and supporting a quantity of molten metal therein. The tundish supports a slide gate shut-off device. A rotating drum supports a plurality of interchangeable casting molds and is operatively coupled to a hydraulic motor through a linear bearing support. The motor is operative to rotate the drum and interchange the casting molds during brief casting interruptions facilitated by the slide gate shut-off. Each interchangeable mold in the plurality of casting mold includes an indexing flange defining a plurality of index recesses. A clamp stand is positioned downstream of the rotating drum and casting molds and supports a plurality of expandable hydraulic cylinders having extending index pins which cooperate with the index recesses and mold flange to secure a casting flange in place during the casting operation.
    Type: Grant
    Filed: January 21, 1992
    Date of Patent: June 1, 1993
    Inventor: Max Ahrens
  • Patent number: 5205344
    Abstract: A horizontal continuous casting device including a mold horizontally mounted through an orifice plate on a front side of a tundish. A front portion of the orifice plate is exposed into the mold. A horizontally extending small gap is formed between an outer circumferential surface of the front portion of the orifice plate and an inner circumferential surface of the mold. A facing surface between the mold and the orifice plate is provided with an annular lubricating oil passage and a given number of radial grooves communicated from the lubricating oil passage to the gap.
    Type: Grant
    Filed: May 10, 1990
    Date of Patent: April 27, 1993
    Assignee: Yoshida Kogyo K.K.
    Inventors: Yoshitaka Nagai, Makoto Arase, Norio Ohatake
  • Patent number: 5191928
    Abstract: A method for continuous casting of steel comprises the steps of feeding molten steel to cooling device for cooling molten steel by use of feeding device for feeding molten steel; cooling fed molten steel by the cooling device; generating a high-frequency magnetic field near a zone where the feeding device, the cooling device and molten steel contact each other; and converging the high-frequency magnetic field on the zone where the feeding device, the cooling device and molten steel contact each other. Further, an apparatus for continuous casting of steel comprises feeding device for feeding molten steel; cooling device for cooling molten steel fed by the feeding device; generating device for generating a high-frequency magnetic field near a zone where the feeding device, the cooling device and molten steel contact each other; and converging device for converging the magnetic field on the zone where the feeding device, the cooling device and molten steel contact each other.
    Type: Grant
    Filed: November 26, 1991
    Date of Patent: March 9, 1993
    Assignee: NKK Corporation
    Inventors: Toshio Sato, Shunichi Sugiyama, Toshio Ishii, Masayuki Nakada, Takashi Oosako, Kentaro Mori
  • Patent number: 5074353
    Abstract: Disclosed is a method for horizontal continuous casting of a metal strip cast product having a unidirectionally solidified structure elongated in the direction of casting, comprising the steps of supplying a molten casting metal into a hot mold having a shape substantially like a gutter opened at its upper side and being heated to a temperature not lower than the solidification temperature of the casting metal, and drawing out a metal molding formed in the hot mold by using a dummy member while cooling the drawn-out metal molding, wherein the cooling is performed on the metal molding within the hot mold at a position in front a solidification starting end portion of the metal molding but in the rear of an outlet of the hot mold with respect to the direction of movement of the metal molding, so that the metal molding is drawn out, after cooled, from the hot mold.
    Type: Grant
    Filed: November 23, 1990
    Date of Patent: December 24, 1991
    Assignee: Kabushiki Kaisha O. C. C.
    Inventor: Atsumi Ohno
  • Patent number: 5033536
    Abstract: A horizontal continuous casting apparatus for metals, particularly steel, having a supply container in the metal outlet opening of which there is arranged a nozzle brick against which a separation ring rests in sealing manner, and having a continuous casting mold which is connected to the supply container and rests with the edge sides of its side walls in sealing manner against the separation ring. A reliable changing of the passage cross-section of the mold before, during and after the casting is possible in a structurally simple manner. The passage cross-section (A) of the continuous casting mold (30) is adjusted and displacement elements (40) are provided by means of which the position of the side walls (31 to 34) of the continuous casting mold (30) is adjusted. At least one side wall (31 to 34) is moveable parallel and transverse to the center line I of the outlet opening 11.
    Type: Grant
    Filed: September 12, 1989
    Date of Patent: July 23, 1991
    Assignee: Mannesmann Aktiengesellschaft
    Inventors: Franz Keutgen, Peter Voss-Spilker, Achim Kubon
  • Patent number: 4993476
    Abstract: A secondary cooling device for a horizontal continuous casting apparatus, comprising (1) a support rod horizontally disposed before a tundish and above a cooling mold, (2) a holder slidably mounted on the support rod and incorporating a worm and a pair of worm gears engageable with each other, (3) an arm extending downwardly from the end of each of the worm gears, (4) half-annular shaped cooling water pipes secured onto the lower ends of the respective arms, said half-annular shaped cooling water pipes being so designed as to form an annular shape when brought together, (5) half-annular shaped wipers secured to the respective cooling water pipes on the side facing the tundish, the wipers being positioned concentrically with respect to said resulting ingot and having a inner diameter smaller than the diameter of the resulting ingot and (6) cooling water nozzles secured to the cooling water pipes on the side away from the tundish.
    Type: Grant
    Filed: March 9, 1990
    Date of Patent: February 19, 1991
    Assignee: Yoshida Kogyo K.K.
    Inventors: Yoshitaka Nagai, Makoto Arase, Norio Ohatake
  • Patent number: 4955430
    Abstract: The invention discloses a method and apparatus for horizontal continuous casting of thin steel slabs by floating liquid steel on the surface of a pool of molten lead and allowing the steel to solidify by cooling to form a continuous flat ribbon. The virtually complete immiscibility between iron and lead is the key to the invention and also the fact that iron floats on lead, both are good heat conductors and molten lead is non-wetting towards solid iron and a good lubricant for it. The method is conducted in an elongated tray containing a molten lead pool and incorporating lateral edge dams defining the cast slab width. Liquid steel from a prior process is continually introduced from a tundish or ladle and distributed uniformly across the entry end while avoiding turbulence and mechanical mixing between lead and steel. Heat is extracted by external cooling as the steel progresses along the tray, causing it to freeze and form an outer shell solidification front extending transversely between the edge dams.
    Type: Grant
    Filed: February 13, 1989
    Date of Patent: September 11, 1990
    Inventor: William L. Sherwood
  • Patent number: 4940078
    Abstract: Oil rings of increased life are provided on the basis of compositions selected to provide increased effective amounts of lattice-contracting atomic species.
    Type: Grant
    Filed: November 30, 1988
    Date of Patent: July 10, 1990
    Assignee: Aluminum Company of America
    Inventor: Diane D. Martin
  • Patent number: RE45414
    Abstract: A process and apparatus for continuous casting of amorphous alloy sheets having large sheet thickness using bulk solidifying amorphous alloys are provided. Thick continuous amorphous alloy sheets made of bulk solidifying amorphous alloys are also provided.
    Type: Grant
    Filed: August 29, 2012
    Date of Patent: March 17, 2015
    Assignee: Crucible Intellectual Property, LLC
    Inventor: William L. Johnson