With Plural Belts Of Flexible Material Patents (Class 164/431)
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Patent number: 11192175Abstract: A side dam for a continuous metal casting apparatus includes an insulator and a belt system having an endless belt. The endless belt includes a belt surface, and the endless belt is movable relative to the insulator such that a portion of the belt surface is configured to face a casting cavity of the continuous metal casting apparatus as the endless belt is moved. In some examples, the endless belt is movable in a plane of motion that is perpendicular to the belt surface.Type: GrantFiled: January 28, 2020Date of Patent: December 7, 2021Assignee: NOVELIS INC.Inventors: James Alan Imthurn, Heinz Werner Becker
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Patent number: 11000893Abstract: A continuous casting apparatus includes a first belt carried by a first upstream pulley and a first downstream pulley, a second belt carried by a second upstream pulley and a second downstream pulley, and a mold region defined by a first mold support section arranged behind the first belt and a second mold support section arranged behind the second belt. The first mold support section supports the first belt and defines a shape of the first belt in the mold region and the second mold support section supports the second belt and defines a shape of the second belt in the mold region. At least one of the first mold support section and the second mold support section includes a transition portion and a generally planar portion downstream from the transition portion. The transition portion has a variable radius configured to receive molten metal from a metal feeding device.Type: GrantFiled: April 5, 2018Date of Patent: May 11, 2021Assignee: HAZELETT STRIP-CASTING CORPORATIONInventors: Charles D Dykes, Valery G Kagan, Douglas A Hamilton, Casey J Davis, John E Pennucci
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Patent number: 10999965Abstract: A litter distribution apparatus provides for even distribution of a bedding material to an animal containment area for animal husbandry operations. The distribution apparatus has vertically adjustable skid legs that support the apparatus at a desired elevation as it is drawn across a ground surface of the containment area. A frame and litter containment skirt allow for the accumulation of the bedding material and even disposition along the ground surface based on the selected elevation of the skid legs. The skid legs may be vertically adjustable via an actuator.Type: GrantFiled: May 28, 2019Date of Patent: May 11, 2021Inventor: Clark Adam Garner
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Patent number: 9904247Abstract: A cooling device that is included in an image forming apparatus includes a first cooler configured to cool a first face of a recording medium and a second cooler configured to cool a second face of the recording medium. The first cooler includes a first heat absorbing face and a first liquid flowing passage. The first heat absorbing face is configured to contact an inner circumferential surface of a belt to face the first face of the recording medium. The second cooler includes a second heat absorbing face and a second liquid flowing passage. The second heat absorbing face is disposed facing the second face of the recording medium.Type: GrantFiled: October 17, 2016Date of Patent: February 27, 2018Assignee: Ricoh Company, Ltd.Inventors: Takahiro Ogino, Kazuhiro Shimada
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Patent number: 8596332Abstract: The invention relates to a speed synchronization system for an aluminum alloy slab continuously casting and rolling line having a twin-belt casting machine and skin pass rolling machine which controls the belt speed of the twin-belt casting machine and roll speed of the skin pass rolling machine. An actually measured value of a slab speed during advance from a twin-belt casting machine to a skin pass rolling machine is compared with a line speed setting to control roll speed of the skin pass rolling machine by proportional/integrated control and simultaneously control belt speed of the twin-belt casting machine based on the line speed setting and a solidification shrinkage rate of the aluminum alloy to be cast.Type: GrantFiled: November 15, 2012Date of Patent: December 3, 2013Assignee: Nippon Light Metal Company, Ltd.Inventors: Isao Shikine, Kazumi Tono
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Patent number: 8176970Abstract: There is provided a twin-belt casting machine which prevents an uneven cooling condition between the top surface and the bottom surface of a slab between a pair of endless belts disposed vertically. The twin-belt casting machine 1 comprises a pair of rotating belt units 3 including respective endless belts 2 and arranged up and down so as to face each other, a cavity 4 formed between the pair of rotating belt units 3, and cooling means 10 which is arranged inside the rotating belt unit 3. The twin-belt casting machine 1 continuously casts a slab S as a metal liquid is supplied in the cavity 4. The twin-belt casting machine 1 further comprises distance adjusting means which is arranged inside at least one of the pair of rotating belt units arranged up and down so as to face each other, and which moves apart or closer the endless belt relative to the slab S in accordance with a part where the slab and the endless belt become distant from each other.Type: GrantFiled: November 5, 2008Date of Patent: May 15, 2012Assignee: Nippon Light Metal Company, Ltd.Inventors: Toshiaki Ito, Noboru Kubota, Kazumi Touno
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Patent number: 7823623Abstract: A twin-belt casting machine for casting metal strip. The machine is provided with a casting cavity which includes an upstream fixed casting region, in which the belts are in fixed convergent paths in contact with the cast slab, and an adjacent downstream portion in which the belts are adjustable between alignment with the fixed convergent paths and non-alignment therewith (being less convergent or divergent). When the adjustable portions of the paths are moved outwardly relative to the fixed convergent paths, the belts separate from the cast slab at differing predetermined points within the casting cavity. By adjusting the downstream portion of the casting cavity in this manner, the casting machine can operate at essentially constant throughput for a wide range of alloys while ensuring that the cast slab exiting the caster has a temperature within a predetermined range suitable for further rolling to produce sheet product.Type: GrantFiled: March 15, 2007Date of Patent: November 2, 2010Assignee: Novelis Inc.Inventors: John Fitzsimon, Ronald Roger Desrosiers, Willard Mark Truman Gallerneault, Kevin Michael Gatenby
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Patent number: 7448432Abstract: A continuous belt casting apparatus is provided with a casting cavity, and at least one flexible metal belt having an elongated casting surface passing through and at least partially defining the casting cavity. A motor is provided for rotating the metal belt in the longitudinal direction of the casting surface whereby the casting surface passes through the casting cavity in the longitudinal direction. A molten metal supply device delivers molten metal continuously to the casting cavity, so that molten metal supplied to the casting cavity is solidified and removed as a continuous strip ingot from the casting cavity by rotation of the belt. The casting surface is provided with a plurality of grooves oriented in substantially the same direction. The invention also relates to a casting belt for such an apparatus and a method of casting using the apparatus.Type: GrantFiled: October 1, 2004Date of Patent: November 11, 2008Assignee: Novelis Inc.Inventors: Simon William Barker, Ronald Roger Desrosiers
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Patent number: 7380583Abstract: A casting belt for using in a single-belt or twin-belt casting apparatus is disclosed. The casting belt is made of aluminum alloy such as an alloy from the AA5XXX and AA6XXX systems, preferably having a thickness in the range of 1 to 2 mm. The aluminum casting belt of the invention is suitable for casting non-ferrous and light metals such as aluminum, magnesium, copper, zinc and their alloys, especially aluminum alloys such as Al—Mg, Al—Mg—Si, Al—Fe—Si and Al—Fe—Mn—Si alloy systems. A belt casting machine and process using the aluminum casting belt of the invention are also disclosed.Type: GrantFiled: October 1, 2004Date of Patent: June 3, 2008Assignee: Novelis Inc.Inventors: Willard Mark Truman Gallerneault, Kevin Michael Gatenby, Iljoon Jin, Ronald Roger Desrosiers
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Patent number: 7156147Abstract: An apparatus for guiding a moving, flexible, tensed casting belt on a continuous metal casting machine along a substantially oval path. The continuous metal casting machine having an entrance-end, an exit-end and a moving-mold casting region extending from the entrance-end to the exit-end. The apparatus includes a non-rotating fluid pillow structure at the entrance end of the machine. The fluid pillow structure supports the mold-width of the casting belt. The apparatus includes two narrow shoulder-pulleys at the entrance end of the casting machine which are adjacent to opposite sides of the entrance-end fluid-pillow structure. Each pulley supports a portion of the belt outside of the moving-mold casting region. Each pulley guides the belt around the fluid-pillow structure as the belt revolves along its substantially oval path. The apparatus also facilitates the sealing, controlled-venting and recovery of pressurized fluids used to levitate the belt about a fluid-pillow structure.Type: GrantFiled: October 19, 2005Date of Patent: January 2, 2007Assignee: Hazelett Strip Casting CorporationInventors: J. F. Barry Wood, R. William Hazelett
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Patent number: 6910524Abstract: A belt cooling and guiding apparatus for a casting belt of a twin belt caster. The cooling and guiding apparatus includes at least one nozzle having a support surface facing a reverse surface of the casting belt (a surface opposite to a casting surface in the casting mold), provided with a continuous slot in the support surface arranged transversely substantially completely across the casting belt. The slot allows for delivery of cooling liquid to the reverse surface of the belt in the form of a continuous film having uniform thickness and velocity of flow when considered in the transverse direction of the belt. This allows for even cooling transversely of the belt. The nozzle arrangement is also provided with a drainage opening for removal of cooling liquid downstream from the continuous slot, and a vacuum system associated with the drainage opening for applying suction to the drainage opening.Type: GrantFiled: May 14, 2004Date of Patent: June 28, 2005Assignee: Novelis Inc.Inventors: Olivo G. Sivilotti, James Gordon Sutherland, Herbert James Thorburn
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Publication number: 20040211546Abstract: A belt cooling and guiding apparatus for a casting belt of a twin belt caster. The cooling and guiding apparatus comprises at least one nozzle having a support surface facing a reverse surface of the casting belt (a surface opposite to a casting surface in the casting mold), provided with a continuous slot in the support surface arranged transversely substantially completely across the casting belt. The slot allows for delivery of cooling liquid to the reverse surface of the belt in the form of a continuous film having uniform thickness and velocity of flow when considered in the transverse direction of the belt. This allows for even cooling transversely of the belt. The nozzle arrangement is also provided with a drainage opening for removal of cooling liquid downstream from the continuous slot, and a vacuum system associated with the drainage opening for applying suction to the drainage opening.Type: ApplicationFiled: May 14, 2004Publication date: October 28, 2004Inventors: Olivo G. Sivilotti, James Gordon Sutherland, Herbert James Thorburn
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Patent number: 6755236Abstract: A belt cooling and guiding apparatus for a casting belt of a twin belt caster. The cooling and guiding apparatus comprises at least one nozzle having a support surface facing a reverse surface of the casting belt (a surface opposite to a casting surface in the casting mold), provided with a continuous slot in the support surface arranged transversely substantially completely across the casting belt. The slot allows for delivery of cooling liquid to the reverse surface of the belt in the form of a continuous film having uniform thickness and velocity of flow when considered in the transverse direction of the belt. This allows for even cooling transversely of the belt. The nozzle arrangement is also provided with a drainage opening for removal of cooling liquid downstream from the continuous slot, and a vacuum system associated with the drainage opening for applying suction to the drainage opening.Type: GrantFiled: August 7, 2000Date of Patent: June 29, 2004Assignee: Alcan International LimitedInventors: Olivo G. Sivilotti, James Gordon Sutherland, Herbert James Thorburn
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Publication number: 20030205356Abstract: A continuous chain caster has upper and lower mold assemblies comprising endless belts and chains traveling at synchronized speeds. The mold assemblies meet to form a mold channel which is filled with molten metal from a headbox and feed tip. As the molten metal passes through the mold channel, the metal solidifies into the shape of the mold channel. Each belt is positioned outside the corresponding chain so that the smooth surface of the belt defines the surface of the mold channel thereby preventing the formation of fins between mold blocks which make up the chain, protecting the chain blocks, and neutralizing deformations in the chain blocks. The upper and lower blocks of the chains have protrusions at opposite ends which engage the opposing blocks to form the sides of the mold channel. By sliding the chains relative to each other, the width of the mold channel is adjustable.Type: ApplicationFiled: April 9, 2003Publication date: November 6, 2003Inventors: Curt Braun, Christopher A. Romanowski, Bobby Bruce Speed, Pieter F. Post
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Publication number: 20020179277Abstract: A process of casting a molten metal to form a cast metal strip ingot while controlling heat flux from the cast metal. The process comprises continuously supplying molten metal to a casting cavity formed between a pair of moving continuous casting surfaces that withdraw heat from the molten metal to cause metal solidification, and continuously withdrawing a resulting cast strip ingot from the casting cavity. A gas (e.g. air) containing water vapour substantially without liquid water (i.e. a moist gas) is supplied to the inlet of the casting cavity in a region containing the meniscus formed where the molten metal first contacts the casting surfaces. The moist gas has the effect of adjusting the heat withdrawal by the casting surfaces to minimize surface defects in the cast strip ingot and to avoid undesired distortion of the casting cavity. Furthermore, in those cases where a parting agent is applied to the casting surfaces, the amount of parting agent applied to the casting surfaces may be reduced.Type: ApplicationFiled: July 30, 2002Publication date: December 5, 2002Inventors: Ronald Roger Desrosiers, John Fitzsimon, Andre Larouche
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Patent number: 6386270Abstract: Method, system and apparatus for controllably heating copper alloy dam blocks in revolving edge dam chains in twinbelt continuous casters by induction heating of thermally-sprayed ferromagnetic layers bonded in shallow depressions in such blocks. High thermal conductivity of such blocks advantageously quickly conducts inductive heat from ferromagnetic layers into the blocks. For casting a slab of electrolytic anodes having aligned opposed protruding lugs, such chains include uniformly spaced lug-molding pocket blocks. Periodic induction heating of ferromagnetic layers on dam blocks of one chain or the other keeps pocket blocks aligned as revolving chains travel downstream along opposite sides of moving mold casting regions. Directly induction heating copper alloy dam blocks is very impractical. Therefore, ferromagnetic layers are thermally sprayed into depressions in blocks prior to assembling such chains.Type: GrantFiled: June 18, 2001Date of Patent: May 14, 2002Assignee: Hazelett Strip-Casting CorporationInventors: Nedeltcho P. Kandev, Jerome B. Allyn, Dean A. Boozan
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Patent number: 6279646Abstract: An apparatus and method for continuously casting molten metal, wherein the apparatus comprises first and second endless belts and first and second edge dam block continuous belts disposed to form a casting region wherein molten metal can be cast into strip. The edge dam blocks have a length longer than the endless belts to form catenaries spaced from the first endless belt. The edge dam blocks are inductively heated with induction heaters disposed in the catenaries to avoid temperature shock to the edge dam blocks during the casting and to minimize undesirable heat losses.Type: GrantFiled: February 23, 1996Date of Patent: August 28, 2001Assignees: Ajax Magnethermic Corporation, Barmet Aluminum CorporationInventors: Nicholas V. Ross, Stanley W. Platek
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Publication number: 20010000589Abstract: In a sliding chain-type ingot mold (12, 13), each mold is constituted by molding elements (14, 15; 114, 115; 214, 215) representing two half-molds which can be made to face each other so as to form a closed mold shaping a cavity to hold the molten metal. According to the invention, some engaging elements (34, 134, 234) are provided, capable of interacting with cam-shaped surfaces (33, 133, 233) provided on one side on at least one (14, 114, 214) of said molding elements, and on the other side on a fixed frame (35) designed to detach and approach said molding elements.Type: ApplicationFiled: December 21, 2000Publication date: May 3, 2001Applicant: TECHINT COMPAGNIA TECNICA INTERNAZIONALE S.P.A.Inventors: Gianfranco Mantovan, Giuseppe Ferrario
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Patent number: 6135199Abstract: Method and device for cooling belts of single or twin belt casters. The belt is cooled by a liquid which is contacted with the inner surface of the belt by a system of feed tubes and collection tubes. Liquid is passed out the feed tube, into a channel that communicates with the inner surface of the heated belt, the belt is cooled, and the liquid is removed through collection tubes with a vacuum assist.Type: GrantFiled: November 20, 1998Date of Patent: October 24, 2000Assignee: Alcoa Inc.Inventor: Gavin Wyatt-Mair
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Patent number: 6044896Abstract: A device to control the gap in between two drums or belts that are used in a strip casting apparatus. It comprises a means to move either side of the drums or belts in two planes. This ability enables the operator to control the gap to provide flexibility and increased performance during casting.Type: GrantFiled: August 26, 1998Date of Patent: April 4, 2000Assignee: Alcoa Inc.Inventor: Donald G. Harrington
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Patent number: 6026887Abstract: Steering, tensioning and driving a revolving metallic casting belt in continuous casting machines wherein the belt travels along a generally straight casting plane P. Two two-axis robotic mechanisms are positioned at opposite ends of an exit-pulley drum, each including a "floating" housing carrying a bearing rotatably supporting a journal at the respective drum end. A drive shaft connected to one of the journals rotates the drum for revolving the belt. The robotic mechanisms adjustably position opposite ends of a rotating drum in X--X plane parallel with plane P for tensioning the belt and in Y--Y plane perpendicular to plane P for steering the revolving belt. These robotic mechanisms are controlled to operate in any of several modes: (1) "Walking-tilt" steering keeps the belt much closer to an exiting product than prior art, the belt being flatter and in better contact with the product for improving casting speed and quality.Type: GrantFiled: March 4, 1997Date of Patent: February 22, 2000Assignee: Hazelett Strip-Casting CorporationInventors: Charles D. Dykes, J. F. Barry Wood, Charles R. Simon, R. William Hazelett
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Patent number: 5979538Abstract: A continuous chain caster has upper and lower mold assemblies comprising endless belts and chains traveling at synchronized speeds. The mold assemblies meet to form a mold channel which is filled with molten metal from a headbox and feed tip. As the molten metal passes through the mold channel, the metal solidifies into the shape of the mold channel. Each belt is positioned outside the corresponding chain so that the smooth surface of the belt defines the surface of the mold channel thereby preventing the formation of fins between mold blocks which make up the chain, protecting the chain blocks, and neutralizing deformations in the chain blocks. The upper and lower blocks of the chains have protrusions at opposite ends which engage the opposing blocks to form the sides of the mold channel. By sliding the chains relative to each other, the width of the mold channel is adjustable.Type: GrantFiled: October 5, 1998Date of Patent: November 9, 1999Assignees: Fata Hunter, Inc., Hunter Douglas Industries, B.V.Inventors: Curt Braun, Christopher A. Romanowski, Bobby Bruce Speed, Pieter F. Post
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Patent number: 5967223Abstract: Permanent-magnetic hydrodynamic methods and apparatus stabilize a moving, flexible, thin-gauge, heat-conducting, magnetically soft ferromagnetic casting belt against thermal distortion while moving along a mold cavity being heated at its front surface by heat coming from molten metal being cast while being cooled at its reverse surface by flowing pumped liquid coolant. Hydro-magnetic devices are arranged in an array wherein flows of pumped coolant pass through fixedly throttling passageways feeding pressure pockets facing the belt's reverse surface. These pockets are shown rimmed by magnetic pole faces. Coolant issues from the pressure pockets as fast-moving films radiating therefrom and travelling in gaps between the belt's reverse surface and the pole faces.Type: GrantFiled: June 30, 1997Date of Patent: October 19, 1999Assignee: Hazelett Strip-Casting CorporationInventors: Valery G. Kagan, R. William Hazelett
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Patent number: 5964276Abstract: Edge-dam blocks assembled with their upstream faces in keyed mating interengagement with downstream faces of adjacent blocks form an endless edge dam revolvable in a preselected path for defining a boundary of a moving-mold casting region. The edge dam keeps molten metal in the casting region. Upstream and downstream faces of adjacent blocks have mutually complementary shapes for minimizing intrusion of molten metal between abutting blocks. Keying engagement between abutting blocks prevents relative translational slippage of blocks toward or away from molten metal. An abuttable face on each block has at least one protrusion such as an integral elongated key extending perpendicularly to a casting belt associated with the casting region, or the protrusion includes two round pins having projecting tapered ends. Another abuttable face has a recess such as a keyway for snugly receiving a key on an adjacent block or has two tapered recesses for snugly receiving two tapered projections of an adjacent block.Type: GrantFiled: July 24, 1998Date of Patent: October 12, 1999Assignee: Hazelett Strip-Casting CorporationInventors: John Dompas, Stanley E. Aylward, R. William Hazelett
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Patent number: 5909764Abstract: The caster includes a pair of movable opposed belts, each of the belts having a casting surface and a pair of movable opposed dam blocks including a plurality of dam blocks having one end mounted to an orbiting support and a casting surface opposite the mounted end. The casting surfaces of the belts and the casting surfaces of the dam blocks define a casting zone for solidifying the molten metal into cast metallic product. The caster also includes cooling plates/bars for cooling the belts while the belts pass through the casting zone.Type: GrantFiled: March 6, 1998Date of Patent: June 8, 1999Assignee: Aluminum Company of AmericaInventors: Adam J. Sartschev, Joshua C. Liu
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Patent number: 5787968Abstract: The side dam is movably mounted to the caster so that it can be securely sealed against the nozzle to resist molten metal in the mold from leaking between the nozzle and the side dam. An adjustment system adjusts the pressure of the side dam against the nozzle in order to insure a tight secure seal of the side dam against the nozzle while at the same time adjusting the pressure of the side dam against the nozzle so that excessive undesired frictional wear of the nozzle is avoided.Type: GrantFiled: December 28, 1995Date of Patent: August 4, 1998Assignee: Larex A.G.Inventor: Wilhelm F. Lauener
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Patent number: 5778967Abstract: The side dam includes a frame, an orbiting chain and a plurality of elements connected to the chain. The elements each include a carrier connected to the chain and a block mounted to the carrier. The element further includes a spring or other biasing member for urging the block to bow toward an outer edge of the solidifying molten metal in the mold.Type: GrantFiled: January 11, 1996Date of Patent: July 14, 1998Assignee: Larex A.G.Inventor: Wilhelm F. Lauener
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Patent number: 5728036Abstract: Elongated finned backup rollers have multiple magnetized fins for rolling contact with a moving endless, flexible, thin-gauge, heat-conducting, magnetically soft ferromagnetic casting belt for guiding and stabilizing the belt against thermal distortion while it moves along the mold cavity being heated at its front surface by heat from molten metal while being cooled at its reverse surface by flowing liquid coolant. Each finned backup roller includes an elongated, non-magnetic shaft rotatable around its axis and having multiple annular fins of magnetically soft ferromagnetic material fitted onto the shaft spaced along the shaft. The fins have circular perimeter rims for rolling contact with the reverse surface of a belt. Intervening collar shaped reach-out permanent magnets are mounted on the shaft between successive fins. The fins and reach-out collar magnets alternate in sequence along the length of the roller. The reach-out collar magnets are magnetized in a direction parallel with the axis of the roller.Type: GrantFiled: July 10, 1996Date of Patent: March 17, 1998Assignee: Hazelett Strip-Casting CorporationInventors: Valery G. Kagan, R. William Hazelett
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Patent number: 5725046Abstract: The caster includes a pair of movable opposed belts, each of the belts having a casting surface and a pair of movable opposed dam blocks including a plurality of dam blocks having one end mounted to an orbiting support and a casting surface opposite the mounted end. The casting surfaces of the belts and the casting surfaces of the dam blocks define a bar casting zone for solidifying the molten metal into metallic bar. The caster also includes cooling bars for cooling the belts while the belts pass through the bar casting zone.Type: GrantFiled: September 20, 1994Date of Patent: March 10, 1998Assignee: Aluminum Company of AmericaInventors: Adam J. Sartschev, Joshua C. Liu
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Patent number: 5435375Abstract: Disclosed is an improved casting tip for a continuous caster, the tip designed for transferring molten metal from a molten reservoir to a continuously advancing mold for casting the molten metal, the tip comprising a top wall, a bottom wall and two side walls joined to the top wall and bottom wall to form a passage therebetween having inside surfaces exposed to molten metal passing from the reservoir to the mold, the tip fabricated from a composite material comprised of a base layer of a titanium alloy and a refractory layer bonded to the base layer, the refractory layer resistant to attack by the molten metal.Type: GrantFiled: July 13, 1993Date of Patent: July 25, 1995Inventor: C. Edward Eckert
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Patent number: 5137075Abstract: Apparatus for continuously casting strip material comprising a casting drum rotatable about a first axis, a pair of cheek members including portions slidably engageable with sides of the casting drum mounted for rotation about a second axis spaced from said first axis and a casting belt wrapped around a portion of the cheek members together defining a converging casting arc. The cheek members include peripheral surfaces engageable by marginal edges of the casting belt which maintain a variable casting gap between a casting surface on the belt and a casting surface on the drum. The eccentric mounting of the cheek members with respect to the casting drum cause the spacing between the belt and the drum to decrease as the end of the casting arc is reached. The cheek members each include tapered side surfaces which together with the casting drum define ear receiving recesses that increase in a radial direction as the end of the casting arc is approached.Type: GrantFiled: February 21, 1991Date of Patent: August 11, 1992Assignee: LTV Steel Company, Inc.Inventor: Charles C. Gerding
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Patent number: 5133402Abstract: An induction heating system is applied to a continuous molten metal casting apparatus having two endless flexible casting belts. The belts are arranged such that front surfaces of each belt faces the other belt and a pair of dam blocks arranged at the edges of one of the belts along with the belts themselves form a casting region. Molten metal is delivered to the casting region to form rectangular sheets of cast metal. Inductive heaters preheat the endless belts prior to the belts entry to the casting region. This preheating allows for continuous smooth casting.Type: GrantFiled: November 9, 1990Date of Patent: July 28, 1992Assignee: Ajax Magnethermic CorporationInventor: Nicholas V. Ross
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Patent number: 5103892Abstract: Continuous casting of discrete solid shapes from a molten material using modified continuous casting machines and processes are disclosed. In a conventional twin belt continuous caster, for example, forming means such as dividers are employed on the upper belt to define a mold cavity in the casting region of the machine. Different size and shape forming means may be used to provide a variety of cast products.Type: GrantFiled: July 17, 1991Date of Patent: April 14, 1992Assignee: ASARCO IncorporatedInventor: John R. Hugens, Jr.
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Patent number: 5086827Abstract: The flatness of a casting belt in a continuous metal casting machine is continuously monitored and thereby also the condition of its thermal protective coating. One or more non-contacting eddy-current sensing probes are placed in proximity to the reverse or coolant side of a belt for sensing and measuring the distance of the belt from the probe to reveal irregularities in the flatness of the belt while it travels past the probe. A deficiency of insulative belt coating can cause variations in belt flatness during casting. By monitoring such variations an operator of the continuous casting machine is alerted that the coating needs to be retouched or replaced without interrupting the casting process. Or such monitoring can alert the operator that the belt has become inherently not flat. A similar proximity sensing probe is utilized for the purpose of supplying an instant report of the initial entrance of molten metal into the casting cavity adjacent to a casting belt at the start of a cast.Type: GrantFiled: December 6, 1990Date of Patent: February 11, 1992Assignee: Hazelett Strip-Casting CorporationInventors: Thomas S. Graham, Norman J. Bergeron
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Patent number: 5069270Abstract: Continuous casting is improved by providing a continuous casting mold of copper alloy, said copper alloy including from 1.6 to 2.4% nickel, from 0.5 to 0.8% silicon, from 0.01 to 0.2% zirconium possibly including up to 0.4% chromium and/or up to 0.2% iron, the remainder copper as well as inevitable manufacturing impurities and usual working additives preferably the zirconium amount is smaller than the upper stated limit and the alloy includes in addition up to 0.1% of at least one of the following cerium, hafnium, niobium, titanium and vanadium.Type: GrantFiled: June 14, 1989Date of Patent: December 3, 1991Assignee: KM-Kabel Metall AGInventor: Horst Gravemann
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Patent number: 4934441Abstract: For closing gaps between blocks of a moving edge dam prior to its travelling downstream into the entrance of a moving mold defined between upper and lower revolving casting belts moving downstream from the mold entrance to its exit, the moving edge dam is initially elevated into a crest, as shown in FIGS. 12 and 14. This crest is above a plane generally defined by the lower casting belt travelling downstream. Then, a guide roller positioned above thrusts downwardly upon the moving edge dam bending it convex downwardly as shown at "B" in FIG. 14 for causing its dam blocks to press against each other for sliding them along their high strength endless flexibile carrying member, thereby closing gaps between the blocks entering the mold entrance for sealing the entrance against outward leakage of molten metal between blocks.Type: GrantFiled: August 12, 1987Date of Patent: June 19, 1990Assignee: Hazelett Strip-Casting CorporationInventors: John F. B. Wood, Timothy D. Kaiser, Jerome B. Allyn, Charles D. Dykes, Frank E. Kalaskie, Robert J. Carmichael, Charles R. Simon
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Patent number: 4926925Abstract: Position sensors at an inlet of a mold cavity defined by upper and lower block molds detect distances from the passing upper and lower block molds. In response to outputs from the position sensors, any deflection of the leading end of the tundish nozzle, which can be inclined with respect to the melt outlet of a tundish, toward the upper or lower block molds defining the mold cavity is detected by a control device to generate a drive signal which is delivered to a hydraulic cylinder adapted to incline the tundish nozzle by extending or retracting the rod thereof, whereby the gaps between the leading end of the tundish nozzle and the upper and lower block molds are maintained uniform.Type: GrantFiled: May 17, 1989Date of Patent: May 22, 1990Assignees: Ishikawajima-Harima Jukogyo Kabushiki Kaisha, Nippon Kokan Kabushiki KaishaInventors: Shuzo Takahashi, Yutaka Tsuchida, Shiro Osada, Nobuhisa Hasebe, Masayuki Nakada
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Patent number: 4915158Abstract: A method and belt composition for improving the performance and flatness of thin revolving flexible casting belts of continuous casting machines wherein at least one wall of the moving mold is provided by a thin flexible endless metallic casting belt having a permanent insulative coating with fluid-accessible porosity in this permanent coating. Contrary to prior methods and apparatus which have sought to protect the wide thin casting belts, the present method for improving belt flatness and performance involves providing a Helium-containing gaseous film between the metal and the front face of the casting belt which is coated with a permanent insulative porous coating.Type: GrantFiled: June 6, 1988Date of Patent: April 10, 1990Assignee: Hazelett Strip-Casting CorporationInventors: Jerome B. Allyn, Woitek Szczypiorski, J. F. Barry Wood, James G. Villa
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Patent number: 4905753Abstract: A twin belt continuous casting machine for producing thin slabs includes a pair of belts and a pair of edge dams for forming a metal pool, which are movable in the transverse direction of the belt. A plurality of cooling/heating chambers partitioned in the transverse direction of the belt are provided on the rear surface of the belt in the vicinity of respective side end portions of the belts. A plurality of supporting members which are capable of pressing the rear surface of the belt are respectively provided in the plurality of cooling/heating chambers. The movement of the edge dams is synchronized with the operation of the plurality of supporting members. A fluid introduced into each of the cooling/heating chambers is changed into a heating fluid or a cooling fluid in synchronism with the movement of the edge dams.Type: GrantFiled: June 8, 1988Date of Patent: March 6, 1990Assignee: Nippon Steel CorporationInventors: Kiyomi Shio, Kaname Wada, Katsuhiro Maeda, Noriyuki Kanai, Hideyuki Takahama, Keiichi Katahira, Tsuyoshi Saeki
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Patent number: 4892132Abstract: A casting method and apparatus making use of a twin belt caster which has an upper belt, a lower belt and dam members disposed between both opposing longitudinal edges of the upper and lower belts. The upper belt, lower belt and dam members in cooperation provide a continuous casting mold which is inclined at a predetermined angle from the horizontal plane and into which a melt of steel is poured. The lower belt provides a smaller cooling effect than the upper belt so that the solidification of the melt is retarded in the region near the lower belt as compared with the region near the upper belt.Type: GrantFiled: October 27, 1988Date of Patent: January 9, 1990Assignee: Sumitomo Heavy Industries, Ltd.Inventor: Takashi Asari
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Patent number: 4869310Abstract: The known belt type continuous casting machine is improved in that a pair of guides for side dam block groups are disposed at opposite sides, in the widthwise direction, of a cast piece. Each of the guides includes guide beams disposed in two parallel rows displaced in direction of the thickness of the cast piece. Each of a pair of side dams which are movable in synchronism with feeding of the cast piece is formed of a side dam block group in one row. Each of the side dam block groups is divided into two sub-groups, each of which has a length longer than a contact length between the side dam block group and the cast piece and each of which is guided by a separate guide beam.Type: GrantFiled: January 5, 1988Date of Patent: September 26, 1989Assignee: Mitsubishi Jokogyo Kabushiki KaishaInventors: Kenichi Yanagi, Yoshiki Mito, Kanji Hayashi
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Patent number: 4854371Abstract: A continuous casting machine has a mold of a rectangular cross-section having short sides formed by parallel runs of a pair of metallic belts and short sides constituted by parallel runs of a pair of endless loops each comprising a plurality of dam blocks. The parallel runs of each endless loop are guided by inner and outer guide rails sandwiched between the edges of the parallel runs of the metallic belts and moved in the same direction as the movements of the metallic belts and substantially in synchronism therewith. So as to vary the widthwise dimension of a slab to be cast by the mold, the inner and outer guide rails are independently movable. The endless loop comprises first and second groups of dam blocks which groups are respectively shifted widthwise of the slab by one of the guide rails and by the other guide rail, whereby the width of the slab can be varied perpendicularly to the length of the slab being cast.Type: GrantFiled: December 21, 1988Date of Patent: August 8, 1989Assignee: Nippon Steel CorporationInventors: Keiichi Katahira, Kiyomi Shio, Noriyuki Kanai
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Patent number: 4830089Abstract: A pair of guide pins are mounted on sideplate extensions of the caster and mating roller pairs are mounted on the nozzle assembly. The nozzle is advanced toward the caster so that the roller pairs engage the guide pins. Both guide pins are remotely adjustable in the vertical direction by hydraulic cylinders acting through eccentrics. This moves the nozzle vertically. The guide pin on the inboard side of the caster is similarly horizontally adjustable. The nozzle roller pair which engage the inboard guide pin are flanged so that the nozzle moves horizontally with the inboard guide pin.Type: GrantFiled: May 5, 1988Date of Patent: May 16, 1989Assignees: Hazelett Strip-Casting Corporation, USX CorporationInventors: Robert J. Carmichael, Charles D. Dykes, Ronald Woodrow
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Patent number: 4798315Abstract: In a casting nozzle, tubes are placed between a bar-shaped mouthpiece and a distribution bar, which connect holes in the mouthpiece and the distribution bar to allow for the flow of the melt. Pulling rods which are under tension, are anchored to the mouthpiece and to the distribution bar and press these parts elastically against the ends of the tubes in such a manner that the nozzle components are elastically braced, yet remain flexible and can adjust freely to heat dilatations or inaccuracies which occur in fabrication or assembly. The nozzle components, particularly the tubes, are easy to obtain and to exchange. Due to the fact that the pulling rods enter the mouthpiece from its back side and are anchored therein, the mouthpiece can be very slender, thus allowing for thin casting.Type: GrantFiled: April 23, 1987Date of Patent: January 17, 1989Assignee: Larex AGInventor: Wilhelm F. Lauener
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Patent number: 4794978Abstract: A side dam consisting of elements is arranged laterally of the casting nozzle and the casting mold. The side dam with the elements travels over two pulleys. Each element consists of a carrier and an easily exchangeable block which is connected to the carrier. Each carrier is supported at one end on a guide rail and a pulley by way of a foot and is swivel mounted at the other end to the foot of the neighboring element by way of a connection rod. By these measures optimum conditions are provided so that the side dam travels at a constant speed, despite the application of relatively long elements. Defect blocks can be exchanged during operation. The side dam's plane of motion is parallel to the mold wall's planes of motion and the side dam can herewith be adjusted at any desired depth between the casting mold walls, whereby the width of the cast product is determined.Type: GrantFiled: June 22, 1987Date of Patent: January 3, 1989Assignee: Larex AGInventor: Wilhelm F. Lauener
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Patent number: 4759400Abstract: A belt type cast sheet continuous caster of the type comprises a pair of opposed circulatorily movable belts, a pair of opposed side plates arranged along opposite side edge portions of the movable belts, coolers which each have numerous water feed openings and water discharge openings opened to the movable belt and are arranged behind the respective movable belts, and movable partition plates which are placed in respective cooling headers and each connected to driving means for moving the partition plates in a width direction of a cast sheet. A casting space is defined by the movable belt and the side plates.Type: GrantFiled: October 1, 1986Date of Patent: July 26, 1988Assignees: Kawasaki Steel Corporation, Hitachi, Ltd.Inventors: Nagayasu Bessho, Hirokazu Tozawa, Tetsuya Fujii, Tsutomu Nozaki, Saburo Moriwaki, Noboru Yasukawa, Masaaki Kuga, Michio Suzuki, Nozomu Tamura, Tomoaki Kimura
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Patent number: 4727925Abstract: An endless track continuous casting machine having a pair of upper and lower endless belts facing each other in a spaced apart relationship and travelling in a downwardly slanted direction which form the long side walls of a mold. Dam blocks continuously and closely disposed and pinched between both side edges of the pair of endless belts and each supported by a link forming part of an endless chain wound around sprockets disposed on each side of the pair of endless belts form the short side walls of the mold. The dam blocks are mounted on each of the links of the endless chain to be movable inwardly and outwardly, and they are guided by a guiding mechanism to a projecting position when entering the advancing path of the mold and are guided to a set back position when entering the returning route. This guiding mechanism is adjustable to change the projected position of each dam block while the endless chain is moving, thus enabling the width of a cast piece to be altered without stopping the casting work.Type: GrantFiled: May 27, 1986Date of Patent: March 1, 1988Assignees: Sumitomo Heavy Industries, Ltd., Sumitomo Metal Industries, Ltd.Inventors: Takashi Asari, Takashi Okazaki, Masakazu Koide
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Patent number: 4694899Abstract: A method and system are provided for synchronizing the travelling edge dams in the continuous casting of metal slab, strip, or bar, thereby providing a means for the continuous uniform casting of longitudinally spaced edge shapes, contours, or profiles such as integral shoulders, lugs, lobes, depressions, curves, or indentations in the opposite edges of the cast product. Shapes include the protruding lugs, cast directly opposite each other, for suspending copper anodes in electrolytic refining-also the intruding, material-saving contours in the tops of anodes. A belt-type continuous casting machine is shown wherein two moving contoured edge dam loops each comprise blocks strung upon flexible endless metal straps. The moving edge dams on each side of the mold must be synchronized, regardless of disturbing thermal variations notably.Type: GrantFiled: December 3, 1986Date of Patent: September 22, 1987Assignee: Hazelett Strip-Casting CorporationInventors: John F. B. Wood, Timothy D. Kaiser, Jerome B. Allyn, Charles D. Dykes, Frank E. Kalaskie, Robert J. Carmichael, Charles R. Simon
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Patent number: 4682646Abstract: A continuous casting mold for selectively casting strands of different widths and thicknesses includes two first plate-shaped side walls arranged opposite each other and defining a mold cavity at two opposite sides, each of the two first side walls having a recess at one side edge, two second side walls each arranged so as to be sunk in one of said recesses at an angle to said first side walls, the second side walls having front surfaces pressable against the first side walls so as to form a peripherally closed mold cavity. The first side walls may be subdivided into several parts assembled in the manner of a circulating continuous chain, each chain being guided over an upper and a lower deflection pulley. In a method for operating a continuous casting mold of the above-defined kind, the adjustment force relative the strand is measured during casting, and a lower deflection pulley is adjusted to the oppositely arranged lower deflection pulley until the two oppositely arranged strand shells contact each other.Type: GrantFiled: August 29, 1985Date of Patent: July 28, 1987Assignee: Voest-AlpineInventor: Anton Hulek
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Patent number: RE38555Abstract: A continuous chain caster has upper and lower mold assemblies comprising endless belts and chains traveling at synchronized speeds. The mold assemblies meet to form a mold channel which is filled with molten metal from a headbox and feed tip. As the molten metal passes through the mold channel, the metal solidifies into the shape of the mold channel. Each belt is positioned outside the corresponding chain so that the smooth surface of the belt defines the surface of the mold channel thereby preventing the formation of fins between mold blocks which make up the chain, protecting the chain blocks, and neutralizing deformations in the chain blocks. The upper and lower blocks of the chains have protrusions at opposite ends which engage the opposing blocks to form the sides of the mold channel. By sliding the chains relative to each other, the width of the mold channel is adjustable.Type: GrantFiled: September 25, 2001Date of Patent: July 13, 2004Assignees: Hunter Douglas Industries, B.V., Fata Hunter, Inc.Inventors: Curt Braun, Christopher A. Romanowski, Bobby Bruce Speed, Pieter F. Post