Associated With A Continuous Or Semicontinuous Casting Means Patents (Class 164/268)
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Patent number: 5339886Abstract: A method and apparatus for trimming edge scrap from continuously cast metal strip includes an edge trimming device in combination with a drag casting apparatus for producing aluminum or aluminum alloy cast strip. The edge trimming device includes a tool which marks the casting surface of the casting wheel to disruption the solidification rate during casting of the molten aluminum. Disruption of the solidification rate forms a longitudinal split in the strip being cast resulting in formation of a high quality cast strip product acceptable for further processing and edge trim scrap. The edge trim scrap may be recovered and recycled for further use. The edge trimming device includes adjustable features to permit varying the location of the longitudinal split along the width of the strip being cast in response to casting parameters such as excess gauge variation, surface defects or changing of the cast strip width prior to or during the continuous casting operation.Type: GrantFiled: January 11, 1993Date of Patent: August 23, 1994Assignee: Reynolds Metals CompanyInventors: James C. Key, George A. Sloan
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Patent number: 5325910Abstract: Disclosed is a method for continuous casting with a continuous casting annular mold. The method includes: providing a continuous annular casting mold having a superstructure secured over a chill, the superstructure including an overhang extending over the inner wall of the chill; cooling the inner wall surface of the chill; introducing a mixture of a lubricant and gas under pressure at the transition of the overhang and the inner wall surface of the chill. The mixture is introduced in a direction parallel to the inner wall surface of the chill. A molten material to be cast is introduced to the mold in a direction from above the superstructure. The cast material is drawn off from below the chill, and the mixture of gas and lubricant maintains a gap between the material to be cast and the inner wall surface of the chill. A continuous casting mold is also disclosed.Type: GrantFiled: June 28, 1993Date of Patent: July 5, 1994Assignee: Vereinigte Aluminium-Werke AktiengesellschaftInventors: Wolfgang Schneider, Kurt Kramer
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Patent number: 5320159Abstract: Mold apparatus for continuous casting of metal, has an intermediate plate for supplying one or more mold release agents to the surface of the billet or ingot forming in a cooled mold. The intermediate plate has outlet openings which terminate in an intermediate area between a hot top section and a mold section in which the molten metal solidifies. The intermediate release agent supply plate having a central cross sectional opening is provided between the hot top section and the mold section, the surface of the central opening, adjoining the surfaces of the hot top section and the mold section. The intermediate plate comprises a flat plate having release agent-supply channels that extend to the opening edge and are precision-formed into the upper and lower surfaces of the intermediate plate to a constant depth. Liquid and/or gaseous mold release agents are fed through the supply plate to lubricate the mold surface along which the ingot is formed, cooled and lowered.Type: GrantFiled: April 13, 1993Date of Patent: June 14, 1994Assignee: VAW Aluminum AGInventors: Wolfgang Schneider, Manfred Langen
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Patent number: 5311921Abstract: A pulverulent casting auxiliary (6) is removed from a supply tank (1) in the fluidized state and conveyed through a screw conveyor (10) via a continuous-casting mold (12). At the end of the screw conveyor (10) a return line (30) is provided via which the quantity of casting auxiliary (6) not removed at the removal points (19) disposed over the bath surface (18) is returned into the supply tank (1) in a circulating manner.Type: GrantFiled: January 11, 1993Date of Patent: May 17, 1994Assignee: Intocast GmbH Feuerfestprodukte und GiesshilfsmittelInventor: Hans-Friedrich Smets
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Patent number: 5143682Abstract: The device (1) according to the invention achieves a homogeneous, protective and insulating covering layer on the top layer of a casting ladle containing molten steel. It comprises a fixed part from which a cover wiht scrapers (21, 22) is suspended, and a rotating part (2) fitted below the scrapers (21, 22). The rotating part (2) comprises a series of troughs (12) which are uniformly distributed around a central shaft (10). The troughs (12) have a radially widening slit in the direction away from the central shaft (10). Through the rotating movement of the rotating part (2) and the levelling action of the fixed scrapers (21, 22), the bulk material is uniformly distributed over the troughs (12) of the distribution bin. A rising and falling cover (4) makes it possible to process varying volumes of bulk material.Type: GrantFiled: March 30, 1990Date of Patent: September 1, 1992Assignee: Repa International LimitedInventor: Robert Dhuyvetters
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Patent number: 5033535Abstract: An apparatus for casting metal includes a mould for effecting solidification of the molten metal into a formed metal product, means adjacent to an inlet portion of the mould for feeding the molten metal into the mould and means for delivering a lubricating agent to a surface of the mould contacting the molten metal to substantially prevent adhesion of anyu solidfied metal on the mould surface. According to the novel feature, the lubricating agent delivery means comprises at least one lubricant delivery channel arranged generally parallel to the mould surface, inlet means for delivering a flow of lubricant under pressure into the delivery channel, a plurality of uniformly spaced restrictive flow passages extending across between the delivery channel and lubricant outlet holes adjacent the molten metal for delivery of lubricant to the mould surface.Type: GrantFiled: March 26, 1990Date of Patent: July 23, 1991Assignee: Alcan International LimitedInventors: Guy LeBlanc, Vincent J. Newberry
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Patent number: 5027887Abstract: A system for delivering fluid lubricant to the surfaces of the sidewalls of a mold of a continuous casting machine is provided by a continuously surrounding lubrication gap connecting a manifold to the sides of the casting mold. The lubricating gap has substantially the same resistance to flow between the manifold and the adjacent side of the mold cavity of the mold around the complete perimeter of the mold cavity and has significantly higher resistance to flow of lubricant from the manifold to the mold cavity than the resistance to flow around the manifold and into the gap, whereby the lubricant is uniformly distributed to all the walls of the mold. Preferably the gap will be divided into discrete passages, one for each side of the mold cavity by means of a shaped spacer which also defines the height of the gap and thereby the height of each of the passages. Each passage will normally be of substantially constant width corresponding substantially to the length of the adjacent side of the mold cavity.Type: GrantFiled: April 10, 1990Date of Patent: July 2, 1991Assignee: The University of British ColumbiaInventors: Ian A. Bakshi, Alan C. Perri, Roy P. Smith, James K. Brimacombe, Indira V. Samarasekera
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Patent number: 5027888Abstract: Method and apparatus for sealing molten metal for use in twin-roll type continuous casting apparatus for preventing molten metal from entry into a clearance between a pair of mold rolls and side weirs disposed at opposite ends of the pair of mold rolls to define a molten metal reservoir above the gap between the mold rolls. a sealing medium is supplied at the inner side of the side weirs in the vicinity of the border between the molten metal and each of the mold rolls. Entry of molten metal into the clearance is prevented without the necessity of pressing the side weirs against the roll ends.Type: GrantFiled: January 17, 1990Date of Patent: July 2, 1991Assignee: Hitachi Zosen CorporationInventors: Haruo Sakaguchi, Minoru Tsukigahora, Shiromitsu Iwatani, Kunio Nagai, Masakazu Mouri
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Patent number: 4940078Abstract: Oil rings of increased life are provided on the basis of compositions selected to provide increased effective amounts of lattice-contracting atomic species.Type: GrantFiled: November 30, 1988Date of Patent: July 10, 1990Assignee: Aluminum Company of AmericaInventor: Diane D. Martin
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Patent number: 4917171Abstract: A lubricant is introduced through at least one orifice extending through the peripheral wall of a continuous casting mold. The lubricant melts and spreads between the peripheral wall and metal cast in the mold. The lubricant may be pre-heated.Type: GrantFiled: April 29, 1985Date of Patent: April 17, 1990Assignee: Centre de Recherches Metallurgiques-Centrum Voor Research in de MetallurgieInventors: Marios Economopoulos, Raymond D'Haeyer
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Patent number: 4751955Abstract: The utilization of a feeder immersion type pipe for continuous casting is avoided through an antechamber-like feeder vessel on top of the mold for continuous casting, having a short extension that reaches into the mold cavity and defines a step towards the wall proper from which steel flows in widening cross section to directly form the casting strand. Casting extraction is enhanced by feeding appropriate material, either fluid or a foil, into the space of the mold cavity immediately underneath this step.Type: GrantFiled: September 9, 1986Date of Patent: June 21, 1988Assignee: Mannesmann AGInventors: Franz Feldmann, Fritz-Peter Pleschiutschnigg
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Patent number: 4709744Abstract: The system includes: (a) a hollow cylindrical body adapted to be mounted in a casting table, (b) an annular water baffle removably mounted in the body, the baffle having a central opening through which a forming ingot passes and the baffle providing a flow path for cooling water to flow radially inwardly from the body and discharge inwardly and downwardly against a forming ingot passing through the central opening, (c) an annular mould removably mounted in the body immediately above the water baffle having a central forming cavity for forming a metal ingot, the forming cavity having a smaller diameter than the central opening of the water baffle, (d) a feed inlet for molten metal comprising an insulating ring removably mounted within the body immediately above the mould, the outer diameter of the insulating ring being less than the diameter of the body, (e) a pressure ring removably mounted in the body in the annular gap between the body and the outer diameter of the insulating ring, and (f) a cover plate adaType: GrantFiled: February 27, 1987Date of Patent: December 1, 1987Assignee: Alcan International LimitedInventors: Neil B. Bryson, David T. T. Auchterlonie, Guy LeBlanc, Vincent J. Newberry
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Patent number: 4699200Abstract: Apparatus for casting metal which includes a mold having a central opening with a member attached to the top of the mold in concentric alignment therewith. Also included are at least three elements attached to the mold around the periphery of the member, which elements are selectively movable to be in or out of contact with the member, and when in contact, position the member in concentric alignment with the mold.Type: GrantFiled: September 8, 1986Date of Patent: October 13, 1987Assignee: Aluminum Company of AmericaInventor: Edward A. Sedlacek
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Patent number: 4598763Abstract: One end opening of an open ended mold cavity has a diameter smaller than the peripheral wall of the cavity and a molten metal mass is introduced to the cavity by continuously filling the one end opening with the mass so that the molten metal splays about the inner peripheral edge of the opening to assume a cross-section between the ends of the cavity having a divergent/convergent outline, the intermediate continuum of which between the planes of maximum divergence and minimum convergence thereof, has a peripheral outline corresponding generally to the outline of the cavity at the peripheral wall thereof. A graphite or graphite-like ring is circumposed about the axis of the cavity in the peripheral wall thereof to form a solid but fluid permeable wall section that is disposed to define the peripheral outline of the intermediate continuum of the metallic mass.Type: GrantFiled: March 8, 1985Date of Patent: July 8, 1986Assignee: Wagstaff Engineering, Inc.Inventors: Frank E. Wagstaff, William G. Wagstaff, Richard J. Collins
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Patent number: 4595045Abstract: In order to supply and control the deposit, on the surface of the metal bath of a continuous casting mold, of an evenly distributed layer, of predetermined thickness, of a powdery or granulated material, by way of a supply conduit whose end portion is provided with a delivery nozzle situated above the surface of said metal bath. The delivery nozzle is situated above the surface of the metal bath, at a height equal to or slightly more than the predetermined thickness, the said delivery nozzle is permanently open, and the end portion of the supply conduit is permanently supplied with the said material.Type: GrantFiled: February 28, 1983Date of Patent: June 17, 1986Assignee: Societe Lorraine de Laminage Continu-Sollac (Societe Anonyme)Inventors: Michel Mangin, Patrick Bardet
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Patent number: 4538667Abstract: A mold of copper or copper alloy for continuously casting steel comprises a rough inner surface, a plating of nickel, cobalt or alloy thereof formed over the inner surface and a chromium plating formed over said plating. The mold has a prolonged mold life, gives steel slabs with improved qualities and reduces amounts of lubricating material used in the molding operation.Type: GrantFiled: September 7, 1984Date of Patent: September 3, 1985Assignees: Sumitomo Metal Industries, Ltd., Satosen Co., Ltd.Inventors: Senri Hara, Hiroshi Tomono, Tomohiko Kimura, Kunio Inoue, Takayuki Sato, Yoshio Okada
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Patent number: 4530392Abstract: A continuous casting mold for the casting of molten metals such as steel has a stainless steel insert within the top flange which is resistant to adherence of molten metal splash and spatter, as well as resistant to gouging from cleaning by an oxygen lance. The insert has a lubrication capability, and is held in place within the top flange by a retaining plate.Type: GrantFiled: May 20, 1983Date of Patent: July 23, 1985Assignee: North Star Steel Texas, Inc.Inventor: Robert D. Read
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Patent number: 4527616Abstract: A horizontal continuous casting installation, particularly for casting a strand of a large transverse dimension, wherein a body of molten metal stored in a tundish is continuously supplied through a tundish nozzle secured to the tundish in the vicinity of its bottom and extending horizontally therefrom to a mold connected to the forward end of the tundish nozzle and arranged coaxially therewith to cast a strand which is continuously withdrawn horizontally from the mold. The mold has an inner transverse dimension greater than the inner transverse dimension of the tundish nozzle. An electromagnetic field generating device is located between an outer surface of the tundish nozzle and an inner surface of the mold in the vicinity of an end surface of the mold facing the tundish nozzle for exerting an electromagnetic force on the body of molten metal flowing from the tundish nozzle to the mold in such a manner that the electromagnetic force is oriented toward the center of the body of molten metal.Type: GrantFiled: June 21, 1982Date of Patent: July 9, 1985Assignee: Kawasaki Jukogyo Kabushiki KaishaInventors: Hideo Kaneko, Hatsuyoshi Kumashiro, Akira Iwata
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Patent number: 4521455Abstract: An alloyed copper wire rod is formed by continuous rod-casting, wherein a core rod is driven through a crucible containing molten metal. High purity copper melt is continuously charged into the crucible; to which an alloying material is simultaneously added in a quantity which corresponds to the given casting speed of the core rod. The required alloy thus obtained is crystallized on the surface of the core-rod as it passes through the crucible and the rod produced is treated in the usual manner i.e., cooling, rolling and coiling.Type: GrantFiled: January 20, 1983Date of Patent: June 4, 1985Assignee: Csepel Muvek FemmuveInventor: Sipos Domokos
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Patent number: 4510989Abstract: There are disclosed a method of and apparatus for continuously casting metal rods wherein the metal is forced to pass; through an elongate tube while in a molten state, a cooling medium is circulated about the tube and the rod as it emerges from the tube in order to form a continuous cast rod, and the rod is passed through a bath of another metal whose temperature is sufficiently lower than the melting point of the rod to cool the rod below its critical temperature.Type: GrantFiled: October 21, 1983Date of Patent: April 16, 1985Inventor: Frederic C. Mayer
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Patent number: 4501317Abstract: A process and apparatus for continuously casting molten metal is described. To substantially reduce the risk of tearing the forming metal shell and adversely affecting the casting process and ingot quality, lubricant is supplied to the casting mold and at least that portion of the molten metal supply system where freeze-back is most likely to occur. In a preferred embodiment, a system for delivering cooled lubricant is embedded within the material forming the outlet portion of the molten metal supply system.Type: GrantFiled: November 3, 1982Date of Patent: February 26, 1985Assignee: Olin CorporationInventor: Robert S. Sokolowski
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Patent number: 4069860Abstract: A method of and apparatus for continuously casting molten metal are disclosed wherein a flexible belt is used to enclose the peripheral groove of the casting wheel of a wheel-belt type machine and the useful life of the belt as well as the heat-transfer rate of the molten metal are increased by providing a continuous length of ablative material on the surface of said flexible belt which contacts the molten metal.Type: GrantFiled: November 24, 1975Date of Patent: January 24, 1978Assignee: Southwire CompanyInventor: George C. Ward
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Patent number: 4033398Abstract: A layer of metal is cast on a surface of a metal backing and while the cast metal is still molten, a varying electromagnetic force is generated along an edge of the strip which induces electric currents in the molten metal. The resulting mechanical force exerted in the molten metal is such that the metal is restrained from flowing to the edge of the strip.Type: GrantFiled: February 27, 1976Date of Patent: July 5, 1977Assignee: Vandervell Products LimitedInventor: Eric Roberts Laithwaite
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Patent number: 3999914Abstract: A method of and device for producing reinforced profile belts, especially transmission belts, of extrudable material in a continuous manner successive portions of an endless belt are passed over a peripheral but different section of constant magnitude of a rotating wheel, preferably a wheel with peripheral teeth, so as together with said wheel to form a closed arc-shaped mold chamber. This mold chamber is sealed toward the outside while reinforcing strength members and extruded material from which the respective belt is to be made are continuously fed into the mold chamber.Type: GrantFiled: December 2, 1974Date of Patent: December 28, 1976Assignee: Breco Kunststoffverarbeitungs-GmbH & Co. KGInventors: Rudolf Breher, Herbert Kohlmeier
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Patent number: 3995679Abstract: Apparatus for and method of continuously casting metals by passing a metal core member through a container of molten metal, and thereby accreting and solidifying molten metal on the core member. The invention comprises providing venting means in the apparatus, and method steps for venting gas from portions of the container of molten metal.Type: GrantFiled: December 20, 1974Date of Patent: December 7, 1976Assignee: General Electric CompanyInventors: Joseph Bernard Brinkmann, Joseph Edward Byrnes
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Patent number: 3976119Abstract: A method of and apparatus for the continuous application of a fluid coating to a moveable endless casting surface to provide thermal protection for the casting surface and to facilitate the extraction of the cast bar from the casting mold and to prevent contamination of the casting machine coolant supply with the fluid coating, comprising a housing sealingly engaging a portion of the casting surface and means within the housing for directing jets of a fluid coating onto the engaged portion of the surface along paths substantially perpendicular to the direction of movement of the surface and wiping means positioned within the housing and in contact with the surface to remove and trap excess fluid coating.Type: GrantFiled: November 19, 1974Date of Patent: August 24, 1976Assignee: Southwire CompanyInventor: Vernon J. Miller