Continuous Or Semicontinuous Casting Patents (Class 164/418)
  • Patent number: 10527126
    Abstract: Compositions for balancing a rotary system are disclosed having hydrophobic particles distributed in thixotropic balancing substance. Further disclosed are methods for balancing a rotary system and rotary systems using the composition.
    Type: Grant
    Filed: October 18, 2015
    Date of Patent: January 7, 2020
    Inventors: Lars Bertil Carnehammar, Alvin Ronlan
  • Patent number: 10512970
    Abstract: A primary object of the present invention is to provide a technique of avoiding occurrence of surface defects caused by an electromagnetic brake while checking internal defects with this electromagnetic brake, so that cleanliness of a cast steel can be improved compared with prior arts, and the present invention provides a method for continuously casting steel, the method comprising supplying molten steel into a funnel mold while applying an electromagnetic brake to an outlet flow discharged from an outlet port of an immersion nozzle, wherein magnetic flux density (B) of the electromagnetic brake is within a range of the following (Formula 1): B min ? B ? B max , ? B min = 800 · ( D max D 0 ) 3 · ( H SEN H 0 ) ? ( v · sin ? ? ? ) ? , ? and ? ? B max = 3000 · ( D max D 0 ) 3 · ( H SEN H 0 ) ( v · sin ? ? ? ) 2 .
    Type: Grant
    Filed: January 24, 2019
    Date of Patent: December 24, 2019
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Masahito Hanao, Hiroaki Uchiyama, Kohei Fujimoto, Masatoshi Miyahara
  • Patent number: 9962761
    Abstract: A plunger assembly for a die casting machine shot sleeve includes a plunger body that has an outer diameter. The plunger includes a head that provides a wall. A piston ring is arranged on the plunger body adjacent to the wall. A nut is secured to the outer diameter and urges the piston ring toward the wall to retain the piston ring securely on the plunger body.
    Type: Grant
    Filed: July 29, 2014
    Date of Patent: May 8, 2018
    Assignee: PRATT & WHITNEY SERVICES PTE LTD.
    Inventors: Yuan Kwang Lim, Yan Seng Loh, Andrew Tan, Yao Hui Chee, Shih Han Wong, Yee Ling Kwan
  • Patent number: 9457396
    Abstract: A free casting method according to the present invention includes, a lead-out step for leading out molten metal from a lead-out area (P) provided in a source of supply, e.g. a surface level of the molten metal, to retain the molten metal temporarily by surface films (F) generated on an outer surface, and a forming step for obtaining a formed body by solidifying retained molten metal (MS) led out along a set passage (L1) depending on a desired casting shape, wherein the retained molten metal is solidified after being formed into the desired casting shape by applying an external force thereto at positions between an unrestrained root portion of the retained molten metal in vicinity of the surface level of the molten metal and a solidification interface defined as a boundary between the retained molten metal and the formed body in the forming step.
    Type: Grant
    Filed: March 11, 2015
    Date of Patent: October 4, 2016
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Jun Yaokawa, Yasushi Iwata, Yoshio Sugiyama, Hiroaki Iwahori, Norihiro Amano, Noriyuki Ueno, Takehito Kobayashi
  • Patent number: 9393614
    Abstract: A continuous casting mold for casting a strand of metal includes a sidewall having an inner circumference to define a mold cavity which has a pouring opening for liquid metal and an outlet opening for a cast strand. The mold cavity has a cross section sized to correspond to a basic shape of the cast strand. The sidewall is provided with a profiling in the form of a corrugation that extends in a casting direction and forms grooves extending in substantial parallel relationship from the pouring opening to the outlet opening of the mold cavity. A ratio of the inner circumference of the mold cavity to a width of each of the grooves is greater than 30, and the width of the groove is in the range of 1.5 mm to 30 mm.
    Type: Grant
    Filed: April 18, 2013
    Date of Patent: July 19, 2016
    Assignee: KME GERMANY GMBH & CO. KG
    Inventor: Donald Peter Lorento
  • Patent number: 9120146
    Abstract: A free casting method according to the present invention includes, a lead-out step for leading out molten metal from a lead-out area provided in a source of supply, e.g. a surface level of the molten metal, to retain the molten metal temporarily by surface films generated on an outer surface, and a forming step for obtaining a formed body by solidifying retained molten metal led out along a set passage depending on a desired casting shape, wherein the retained molten metal is solidified after being formed into the desired casting shape by applying an external force thereto at positions between an unrestrained root portion of the retained molten metal in vicinity of the surface level of the molten metal and a solidification interface defined as a boundary between the retained molten metal and the formed body in the forming step.
    Type: Grant
    Filed: September 12, 2011
    Date of Patent: September 1, 2015
    Assignees: KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Jun Yaokawa, Yasushi Iwata, Yoshio Sugiyama, Hiroaki Iwahori, Norihiro Amano, Noriyuki Ueno, Takehito Kobayashi
  • Patent number: 9089894
    Abstract: A chamfered narrow side copper plate for a mold with a funnel-shaped curved surface has a working face contacting molten steel that includes a middle area and two chamfered areas, which are arranged at two sides. The working face has a funnel-shaped curved surface, which is larger at a top and smaller at a bottom. The chamfered narrow side copper plate for mold with funnel-shaped curved surface can ensure the uniformity of the cooling effect of the chamfered surface and enhance the service life of the narrow side copper plate.
    Type: Grant
    Filed: June 3, 2014
    Date of Patent: July 28, 2015
    Assignees: CENTRAL IRON AND STEEL RESEARCH INSTITUTE, Zhong Da National Engineering and Research Center of Continuous Casting Technology Co., Ltd.
    Inventors: Yong Gan, Chunzheng Yang, Hui Zhang, Jianhua Liu, Mei Wang, Gang Wei, Yeming Wu, Guozhong Peng, Minglin Wang, Hongbing Liang, Hongbiao Tao, Li Wang, Changsuo Xi, Baosheng Wang, Xiuqin Ji, Luchun Yuan, Yang Zhang
  • Publication number: 20150034269
    Abstract: A pulling-up-type continuous casting apparatus that lets molten metal solidify while pulling up a drawing section for drawing the molten metal from a molten-metal surface of the molten metal held in a holding furnace, and thereby shapes the molten metal, includes means for applying a non-contact force to held molten metal, the held molten metal being molten metal that has been drawn from the molten-metal surface by the drawing section but has not solidified yet.
    Type: Application
    Filed: July 3, 2014
    Publication date: February 5, 2015
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Fumiki TANAHASHI, Hiroyuki IKUTA, Naoaki SUGIURA
  • Patent number: 8911571
    Abstract: This invention discloses an L,R,C method and equipment for casting amorphous, ultracrystallite and crystallite metal slabs or other shaped metals. A workroom (8) with a constant temperature of tb=?190° C. and a constant pressure of pb=1 bar, and liquid nitrogen of ?190° C. and 1.877 bar is used as a cold source for cooling the casting blank. A liquid nitrogen ejector (5) ejects said liquid nitrogen to the surface of ferrous or non-ferrous metallic slabs or other shaped metals (7) with various ejection quantity v and various jet velocity k. Ejected liquid nitrogen comes into contact with the casting blank at cross section c shown in FIG. 2. This method adopts ultra thin film ejection technology, with a constant thickness of said film at 2 mm and ejection speed Kmax of said liquid nitrogen at 30 m/s.
    Type: Grant
    Filed: April 12, 2013
    Date of Patent: December 16, 2014
    Inventor: Zhuwen Ming
  • Publication number: 20140360694
    Abstract: The continuous casting device according to the present invention enables at least some of a plurality of hearths (3) to be converted between being hearths (13) used for titanium, which are used during the continuous casting of titanium ingots, and being hearths (23) used for titanium alloy, which are used during the continuous casting of titanium alloy ingots. The number of hearths (23) used for titanium alloy is greater than the number of hearths (13) used for titanium. Also, the total capacity of the hearths (23) used for titanium alloy is greater than the total capacity of the hearths (13) used for titanium. Thus, titanium ingots and titanium alloy ingots can each be continuously cast by means of a single piece of equipment.
    Type: Application
    Filed: March 6, 2013
    Publication date: December 11, 2014
    Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.)
    Inventors: Takehiro Nakaoka, Kazuyuki Tsutsumi, Eisuke Kurosawa, Hideto Oyama, Hidetaka Kanahashi, Hitoshi Ishida, Daiki Takahashi, Daisuke Matsuwaka
  • Patent number: 8899304
    Abstract: Crystallizer for continuous casting, having a monolithic tubular structure defined by lateral walls (12) in the thickness of which channels (11) are made in which a cooling liquid flows, wherein two adjacent lateral walls (12) define a corner or s edge zone. On at least one longitudinal portion (C) of at least one of the lateral walls (12) and/or of at least one of the corner zones, defining a zone in correspondence with which, during use, the meniscus of the liquid metal is located, a reduction in thickness (13) is made, starting from the external surface, determining a cross section with a reduced area with respect to the remaining longitudinal portions of the monolithic tubular structure.
    Type: Grant
    Filed: November 24, 2011
    Date of Patent: December 2, 2014
    Assignee: Danieli & C. Officine Meccaniche SpA
    Inventors: Marco Ansoldi, Gianluca Bazzaro, Andrea De Luca
  • Publication number: 20140284018
    Abstract: A chamfered narrow side copper plate for a mould with a funnel-shaped curved surface has a working face contacting molten steel that includes a middle area and two chamfered areas, which are arranged at two sides. The working face has a funnel-shaped curved surface, which is larger at a top and smaller at a bottom. The chamfered narrow side copper plate for mould with funnel-shaped curved surface can ensure the uniformity of the cooling effect of the chamfered surface and enhance the service life of the narrow side copper plate.
    Type: Application
    Filed: June 3, 2014
    Publication date: September 25, 2014
    Inventors: Yong GAN, Chunzheng YANG, Hui ZHANG, Jianhua LIU, Mei WANG, Gang WEI, Yeming WU, Guozhong PENG, Minglin WANG, Hongbing LIANG, Hongbiao TAO, Li WANG, Changsuo XI, Baosheng WANG, Xiuqin JI, Luchun YUAN, Yang ZHANG
  • Patent number: 8813825
    Abstract: A copper mold or copper mold plate and also a process for reconditioning such worn molds or mold plates, which are used for the continuous casting of metals or metal alloys is provided. An electrolytically applied copper coating is provided on the inner wall of the mold or on that side of the mold plate which faces toward the casting strand.
    Type: Grant
    Filed: April 20, 2010
    Date of Patent: August 26, 2014
    Assignee: Egon Evertz K.G. (GmbH & Co.)
    Inventors: Egon Evertz, Ralf Evertz, Stefan Evertz
  • Patent number: 8776862
    Abstract: A chamfered narrow side copper plate for a mold with a funnel-shaped curved surface has a working face contacting molten steel that includes a middle area and two chamfered areas, which are arranged at two sides. The working face has a funnel-shaped curved surface, which is larger at a top and smaller at a bottom. The chamfered narrow side copper plate for mold with funnel-shaped curved surface can ensure the uniformity of the cooling effect of the chamfered surface and enhance the service life of the narrow side copper plate.
    Type: Grant
    Filed: May 2, 2012
    Date of Patent: July 15, 2014
    Assignees: Central Iron and Steel Research Institute, Zhong Da National Engineering and Research Center of Continuous Casting Technology Co. Ltd.
    Inventors: Yong Gan, Chunzheng Yang, Hui Zhang, Jianhua Liu, Mei Wang, Gang Wei, Yeming Wu, Guozhong Peng, Minglin Wang, Hongbing Liang, Hongbiao Tao, Li Wang, Changsuo Xi, Baosheng Wang, Xiuqin Ji, Luchun Yuan, Yang Zhang
  • Patent number: 8746323
    Abstract: A continuous casting furnace is configured for efficiently continuously casting ingots, including titanium alloy ingots. The furnace is configured with an internal cutter for cutting an ingot within the furnace interior chamber. The furnace typically includes a first interior chamber in which a continuous casting mold is disposed and a withdrawal chamber which is separable from the first interior chamber to facilitate withdrawal of finished ingots therefrom while casting continues within the first chamber.
    Type: Grant
    Filed: February 14, 2014
    Date of Patent: June 10, 2014
    Assignee: RTI International Metals, Inc.
    Inventors: Michael P. Jacques, Kuang-O Yu
  • Publication number: 20140090792
    Abstract: A system and method for continuous casting. The system includes a melt chamber, a withdrawal chamber, and a secondary chamber therebetween. The melt chamber can maintain a melting pressure and the withdrawal chamber can attain atmospheric pressure. The secondary chamber can include regions that can be adjusted to different pressures. During continuous casting operations, the first region adjacent to the melt chamber can be adjusted to a pressure that is at least slightly greater than the melting pressure; the pressure in subsequent regions can be sequentially decreased and then sequentially increased. The pressure in the final region can be at least slightly greater than atmospheric pressure. The differential pressures can form a dynamic airlock between the melt chamber and the withdrawal chamber, which can prevent infiltration of the melt chamber by non-inert gas in the atmosphere, and thus can prevent contamination of reactive materials in the melt chamber.
    Type: Application
    Filed: September 28, 2012
    Publication date: April 3, 2014
    Applicant: ATI PROPERTIES, INC.
    Inventor: Matthew J. Arnold
  • Patent number: 8657252
    Abstract: A surface-treated mold that includes a mold, a metal layer that is provided on a surface of the mold and contains at least one metal selected from nickel, chromium, tungsten and brass, and a carbon film that is provided on a surface of the metal layer, wherein the metal layer contains carbon, and the carbon concentration in the metal layer is higher between the boundary with the carbon film and the center of the metal layer than that between the boundary with the mold and the center of the metal layer.
    Type: Grant
    Filed: November 12, 2010
    Date of Patent: February 25, 2014
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Yuichi Furukawa, Jun Yaokawa, Yasushi Iwata
  • Patent number: 8646745
    Abstract: A mold includes: a base; and a contact surface which is provided on the base and which comes into contact with a molten material. The contact surface is provided with a first surface portion that includes a first fiber layer in which first carbon fibers are raised, and a second surface portion having different surface characteristics from the first surface portion.
    Type: Grant
    Filed: January 24, 2011
    Date of Patent: February 11, 2014
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Jun Yaokawa, Yasushi Iwata, Yoshio Sugiyama, Hiroaki Iwahori, Shuxin Dong, Yuichi Furukawa
  • Publication number: 20140008032
    Abstract: A composite side dam for a continuous twin roll caster includes a substrate made of a refractory material capable of withstanding casting temperature and having edge portions adapted to engage casting rolls and having a nip portion adjacent a nip between casting rolls and upper portions extending across the side dam to form a lateral restraint for a casting pool, an insert of at least 10 mm in thickness positioned in a pocket in the substrate and extending to engage the molten metal and extending from the upper portions of the substrate and positioned in the pocket to within 30 mm from the nip portion by insertion adjacent the upper portions of the substrate, and the insert adapted to fit into the pocket of the substrate to form a side dam formed of a refractory material having consumption rate less than 10 mm per hour. The material forming the insert may be between 40 and 60% SiAlON material and the remainder hBN material, or mullite material as described by FIG.
    Type: Application
    Filed: June 27, 2013
    Publication date: January 9, 2014
    Applicant: NUCOR CORPORATION
    Inventors: Jay Jon ONDROVIC, Alan J. DENO, Mark SCHLICHTING, Rama Ballav MAHAPATRA
  • Patent number: 8573284
    Abstract: A casting mold made of a copper material having a casting surface (2) that faces a metal melt, at least one expansion joint (3) being situated in the casting surface (2); the expansion joint (3) having a width (B) that is so small that, during the casting process, no metal melt penetrates into the expansion joint (3).
    Type: Grant
    Filed: August 9, 2010
    Date of Patent: November 5, 2013
    Assignee: KME Germany AG & Co. KG
    Inventor: Ludwig Schmitz
  • Publication number: 20130277006
    Abstract: A continuous casting mould for casting a strand of metal includes a sidewall having an inner circumference to define a mould cavity which has a pouring opening for liquid metal and an outlet opening for a cast strand. The mould cavity has a cross section sized to correspond to a basic shape of the cast strand. The sidewall is provided with a profiling in the form of a corrugation that extends in a casting direction and forms grooves extending in substantial parallel relationship from the pouring opening to the outlet opening of the mould cavity. A ratio of the inner circumference of the mould cavity to a width of each of the grooves is greater than 30, and the width of the groove is in the range of 1.5 mm to 30 mm.
    Type: Application
    Filed: April 18, 2013
    Publication date: October 24, 2013
    Applicant: KME Germany GmbH & Co. KG
    Inventor: Donald Peter Lorento
  • Publication number: 20130269905
    Abstract: A melt charging system for the horizontal strip casting of a molten metal with a run-out element, in particular with a nozzle (9), is characterized in that at least one heating device (21, 22; 28) is arranged in the region of the run-out element for heating up the run-out element.
    Type: Application
    Filed: July 29, 2011
    Publication date: October 17, 2013
    Applicant: SMS SIEMAG AKTIENGESELLSCHAFT
    Inventors: Joerg Bausch, Reiner Puerling, Jochen Schlueter, Jochen Wans, Karl-Heinz Spitzer, Hellfried Eichholz
  • Publication number: 20130171021
    Abstract: A free casting method according to the present invention includes, a lead-out step for leading out molten metal from a lead-out area provided in a source of supply, e.g. a surface level of the molten metal, to retain the molten metal temporarily by surface films generated on an outer surface, and a forming step for obtaining a formed body by solidifying retained molten metal led out along a set passage depending on a desired casting shape, wherein the retained molten metal is solidified after being formed into the desired casting shape by applying an external force thereto at positions between an unrestrained root portion of the retained molten metal in vicinity of the surface level of the molten metal and a solidification interface defined as a boundary between the retained molten metal and the formed body in the forming step.
    Type: Application
    Filed: September 12, 2011
    Publication date: July 4, 2013
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO
    Inventors: Jun Yaokawa, Yasushi Iwata, Yoshio Sugiyama, Hiroaki Iwahori, Norihiro Amano, Noriyuki Ueno, Takehito Kobayashi
  • Patent number: 8418749
    Abstract: A continuous casting device for steel of the present invention includes a casting mold for casting a molten steel, a submerged entry nozzle, an electromagnetic stirring device, and an electromagnetic brake device. Further, a curved portion which is curved toward the electromagnetic stirring device is formed at least at a position where the curved portion faces the submerged entry nozzle, on each of the long side walls. Moreover, the horizontal distance between a top of the curved portion and the submerged entry nozzle in plan view is equal to or more than 35 mm and less than 50 mm.
    Type: Grant
    Filed: November 4, 2009
    Date of Patent: April 16, 2013
    Assignee: Nippon Steel & Sumitomo Metal Corporation
    Inventors: Takehiko Toh, Hideaki Yamamura, Kenji Umetsu
  • Patent number: 8418746
    Abstract: This invention discloses an L,R,C method and equipment for casting amorphous, ultracrystallite and crystallite metal slabs or other shaped metals. A workroom (8) with a constant temperature of tb=?190° C. and a constant pressure of pb=1 bar, and liquid nitrogen of ?190° C. and 1.877 bar is used as a cold source for cooling the casting blank. A liquid nitrogen ejector (5) ejects said liquid nitrogen to the surface of ferrous or non-ferrous metallic slabs or other shaped metals (7) with various ejection quantity v and various jet velocity k. Ejected liquid nitrogen comes into contact with the casting blank at cross section c shown in FIG. 2. This method adopts ultra thin film ejection technology, with a constant thickness of said film at 2 mm and ejection speed Kmax of said liquid nitrogen at 30 m/s.
    Type: Grant
    Filed: July 25, 2005
    Date of Patent: April 16, 2013
    Inventor: Zhuwen Ming
  • Publication number: 20130087300
    Abstract: Described herein is a twin roll caster including a pair of casting rolls arranged parallel to one another with a gap between the casting rolls and side dams parallel to one another forming a pool between the casting rolls and side dams. A side dam support is provided that applies a compression force on at least one of the side dams at a compression angle relative to the axis of the casting rolls.
    Type: Application
    Filed: November 28, 2012
    Publication date: April 11, 2013
    Applicant: CASTRIP, LLC
    Inventor: Castrip. LLC
  • Patent number: 8381794
    Abstract: Mold for the continuous casting of preliminary sections, in particular double T-shaped preliminary sections, such as beam blank sections or similar sections, wherein all the interior walls of the mold in a mold passage have a tapered course running linearly from top to bottom, this tapered course being dimensioned depending on the degree of shrinkage of the cast strand and produced by machining the interior walls. In this manner, it is possible to optimally adjust the diameter of the mold to the shrinkage process of the cast strand in the region of the mold passage, even for large-sized sections.
    Type: Grant
    Filed: May 30, 2010
    Date of Patent: February 26, 2013
    Assignee: SMS Concast AG
    Inventors: Thomas Meier, Beat Kundig
  • Patent number: 8322399
    Abstract: Continuous casting machine for forming a lead alloy strip of large thickness; which comprises a cooled rotating drum (4) having an annular seat (8) formed on the periphery thereof and a vat (10) for containing a molten lead bath, which is sealingly engaged on the peripheral surface (7) of the rotating drum (4). The machine (1) also comprises a fixed shoe (11) extending, from the vat (10), along an arc (25) around the rotating drum (4) and having an arc shape suitable for sealing engagement, in a sliding relationship, on the shoulders (90) of the annular seat (8). Heating means (26) are provided, these consisting of a plurality of torches acting on the shoe (11) along at least an initial section thereof (25) which extends from the vat (10), for heating to a temperature higher than the melting temperature of the lead alloy the free surface of the lead inside the annular seat (8).
    Type: Grant
    Filed: August 3, 2010
    Date of Patent: December 4, 2012
    Assignee: Sovema S.p.A.
    Inventor: Pietro Farina
  • Publication number: 20120279676
    Abstract: This invention involves in metal solidification and continuous casting field, especially a chamfered narrow side copper plate for mould with funnel-shaped curved surface. The working face of the narrow side copper plate (1) contacting molten steel comprise a middle area (2) and two chamfered areas (3, 4) which are arranged at two sides, and said working face has a funnel-shaped curved surface which is big at top and small at bottom. In present invention, the chamfered narrow side copper plate for mould with funnel-shaped curved surface can ensure the uniformity of the cooling effect of the chamfered surface and enhance the service life of the narrow side copper plate.
    Type: Application
    Filed: May 2, 2012
    Publication date: November 8, 2012
    Applicants: Zhong Da National Engineering and Research Center of Continuous Casting Technology Co., Ltd., Central Iron and Steel Research Institute
    Inventors: Yong GAN, Chunzheng Yang, Hui Zhang, Jianhua Liu, Mei Wang, Gang Wei, Yeming Wu, Guozhong Peng, Minglin Wang, Hongbing Liang, Hongbiao Tao, Li Wang, Changsuo Xi, Baosheng Wang, Xiuqin Ji, Luchun Yuan, Yang Zhang
  • Patent number: 8302665
    Abstract: The present invention provides a casting roll of a twin-roll strip caster, including: a nickel plating layer formed on an outer circumferential surface and an end surface of the casting roll; a nickel-boron alloy plating layer formed on the nickel plating layer located on the end surface of the casting roll; and a hard plating layer formed on the nickel plating layer located on the outer circumferential surface of the casting roll and an outer circumferential surface of the nickel-boron alloy plating layer located on the end surface of the casting roll. The present invention improves durability of the casting roll.
    Type: Grant
    Filed: July 14, 2008
    Date of Patent: November 6, 2012
    Assignee: POSCO
    Inventors: Seong-In Jeong, Sung-Jin Park, Dae-Sung Lee
  • Patent number: 8240357
    Abstract: A continuous casting mold includes mold plates which enclose the casting cross section and in which cooling channels extend. The mold plates are connectable to a water box by screw elements which are formed by fastening bolts having a threaded shank which is screwable into fastening threads located in the mold plate. To achieve a uniform cooling in a continuous casting mold, the fastening threads are arranged such that their center longitudinal axes extend between two adjacent coolant channels of the plurality of cooling channels. The diameter of each threaded bore hole of the fastening threads is greater than the distance between the two adjacent cooling channels, and each bore hole of the fastening threads ends at a distance from the floor of the plurality of cooling channels to define the screw-in depth of the fastening bolts.
    Type: Grant
    Filed: October 18, 2007
    Date of Patent: August 14, 2012
    Assignee: SMS Siemag AG
    Inventors: Markus Reifferscheid, Albrecht Girgensohn
  • Publication number: 20120199307
    Abstract: A casting furnace for manufacturing a metal casting comprises an interior chamber and a secondary chamber through which the metal casting passes from the interior chamber into external atmosphere. A seal along the secondary chamber surrounds and seals against the metal casting to separate the interior chamber from the external atmosphere in a manner which allows for an extended period of continuous casting. A force producing mechanism typically forces the seal against the metal casting. Multiple seals may be used sequentially to increase the duration of the sealing capability and the continuous casting process.
    Type: Application
    Filed: April 20, 2012
    Publication date: August 9, 2012
    Applicant: RTI INTERNATIONAL METALS, INC.
    Inventors: Michael P. Jacques, Kuang-O Yu
  • Patent number: 8215375
    Abstract: In order to be able to carry out a multiplicity of continuously recurring activities at a continuous casting plant having at least one multifunction robot for implementing a plurality of different process-controlled or automated interventions at the continuous casting plant, at least one working region at the continuous casting plant and at least one multifunction robot assigned to each working region. The multifunction robot is arranged on a pivotable arm at a rotary column fastened to the pouring platform of the continuous casting plant and the robot can be pivoted with the pivot arm between a retraction position and a working position. The robot is also movable with respect to its arm.
    Type: Grant
    Filed: June 8, 2006
    Date of Patent: July 10, 2012
    Assignee: Siemens Vai Metals Technologies GmbH
    Inventors: Helmut Ebner, Johann Pöppl, Armin Schertler, Susanne Tanzer, Heinrich Thöne, Franz Wimmer
  • 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: 8205659
    Abstract: The invention concerns a metal, iron-containing permanent mold, in particular a permanent mold made of steel, which can be subjected to a liquid or flowable aluminum material, and in which a coating for protecting the permanent mold and for achieving an optimal casting result can be produced using a mold release agent. The invention additionally concerns a mold release agent for producing such a coating, and a method for producing such a coating.
    Type: Grant
    Filed: September 7, 2006
    Date of Patent: June 26, 2012
    Assignee: KS Aluminium-Technologie GmbH
    Inventor: Manfred Laudenklos
  • Publication number: 20120138257
    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: Application
    Filed: February 15, 2010
    Publication date: June 7, 2012
    Inventors: Hellfried Eichholz, Sven Klawiter, Rune Schmidt-Jürgensen, Karl-Heinz Spitzer, Hans-Jürgen Hecken, Jochen Schlüter
  • Patent number: 8171983
    Abstract: A mold for the continuous casting of blooms, slabs or billets is provided with a mold tube (2) and a supporting shell (4) surrounding said mold tube. The mold tube (2) is supported by support profiles (15) on the supporting shell (4) extending in its longitudinal direction and distributed over the periphery and is positively connected thereto via connecting profiles (20) extending in the longitudinal direction. The connecting profiles (20) are respectively configured as profile strips (21, 22) outwardly projecting from the outer periphery of the mold tube (2) and inwardly projecting from the inner periphery of the supporting shell (4), which engage in one another such that in the peripheral direction of the mold a clearance is present. As a result, the stresses, permanent deformation and fatigue cracks produced by the thermal expansion in the mold tube are substantially avoided.
    Type: Grant
    Filed: May 21, 2008
    Date of Patent: May 8, 2012
    Assignee: SMS Concast AG
    Inventors: Franz Kawa, Adalbert Roehrig
  • Patent number: 8162031
    Abstract: A method of making steel comprising assembling a steelmaking furnace, a thin strip caster, and a mold caster, inputting to a computer data on demand for production output, raw materials, furnace availability and capacity, sequence schedules and through-put, capacities and variability, forecasting by processing by computer from the inputted data a production schedule for the steelmaking furnace, and sequence schedules for the thin strip and the mold casters as a function of molten metal availability, the thin strip and mold caster sequence schedules and through-put, and demand for production output, directing production of molten metal alternatively to the delivery systems of the thin strip caster and mold caster responsive to said forecasting, and varying during casting the rate of metal delivery through the delivery system of the thin strip caster responsive to molten metal availability and the mold caster through-put.
    Type: Grant
    Filed: October 25, 2011
    Date of Patent: April 24, 2012
    Assignee: Nucor Corporation
    Inventor: Richard Wechsler
  • Publication number: 20120055648
    Abstract: The invention relates to a mold for the continuous casting of preliminary sections, in particular double T-shaped preliminary sections, such as beam blank sections or similar sections, wherein all the interior walls (7a to 7i) of the mold in the mold passage (8) have a tapered course (9 to 12) running linearly from top to bottom, said tapered course being dimensioned depending on the degree of shrinkage of the cast strand and produced by machining the interior walls (7a to 7i). In this manner, it is possible to optimally adjust the diameter of the mold to the shrinkage process of the cast strand in the region of the mold passage, even for large-sized sections.
    Type: Application
    Filed: May 30, 2010
    Publication date: March 8, 2012
    Applicant: SMS CONCAST AG
    Inventors: Thomas Meier, Beat Kundig
  • Patent number: 8104530
    Abstract: In order to increase the endurance and lifetime of highly loaded components (6, 8, 12, 14, 24, 26, 34) of a steelworks, an electrolytically applied coating (38) is provided, having a ductile metallic base material (39), in particular nickel or a nickel alloy, with hard material particles (40), in particular boron carbide particles, incorporated in it. This measure achieves high resistance to corrosion, good thermal conductivity and at the same time high mechanical loadability.
    Type: Grant
    Filed: November 7, 2006
    Date of Patent: January 31, 2012
    Assignee: Siemens Aktiengesellschaft
    Inventors: Thomas Söntgen, Robert Wagner
  • Patent number: 8051893
    Abstract: A liquid-cooled permanent chill mold for the continuous casting of metals, including a permanent chill mold plate (2) made of copper or a copper alloy and an adapter plate (3), on which the permanent chill mold plates (2) are fastened via fastening bolts (12). The permanent chill mold plates (3) are coupled to the adapter plates (3) via sheet metal holders (19) situated in their top regions and base regions (20, 21), in addition to via the fastening bolts (12).
    Type: Grant
    Filed: October 31, 2008
    Date of Patent: November 8, 2011
    Assignee: KME Germany AG & Co. KG
    Inventors: Hans-Günter Wobker, Gerhard Hugenschütt, Thomas Rolf
  • Patent number: 8042602
    Abstract: A method of making steel comprising assembling a steelmaking furnace, a thin strip caster, and a mold caster, inputting to a computer data on demand and customer requirements for production output, raw materials, furnace availability and capacity, ladle treatment for casting, sequence schedules and through-put, capacities and variability, forecasting by processing by computer from the inputted data a production schedule for the steelmaking furnace and ladle treatment, and sequence schedules for the thin strip and the mold casters as a function of molten metal availability, the thin strip and mold caster sequence schedules and through-put, and demand for production output, directing production of molten metal alternatively to the delivery systems of the thin strip caster and mold caster responsive to said forecasting, and varying during casting the rate of metal delivery through the delivery system of the thin strip caster responsive to molten metal availability and the mold caster through-put.
    Type: Grant
    Filed: June 6, 2010
    Date of Patent: October 25, 2011
    Assignee: Nucor Corporation
    Inventor: Richard Wechsler
  • Patent number: 8021599
    Abstract: A method for producing steel products (1) with optimum surface quality wherein the molten steel (1b) is produced in a process route (10, 100; 12; 13) that is selected according to a desired final microstructure (9), by melting in a furnace (2b) with an electrode system (31), and in a vacuum degassing system; or by melting in a furnace installation (35) or an individual furnace vessel (30), in a ladle furnace (25), and in a differential-pressure vacuum degassing system (43); or by melting in a furnace (2b) with additions of alloying materials (26), a partial-quantity degassing in the ladle furnace (25), or a vacuum degassing system (27) and a ladle degassing (27).
    Type: Grant
    Filed: February 13, 2009
    Date of Patent: September 20, 2011
    Assignee: SMS Siemag Aktiengesellschaft
    Inventors: Fritz-Peter Pleschiutschnigg, Karl-Ernst Hensger, Dieter Rosenthal, Rainer Teworte, Dieter Tembergen
  • Publication number: 20110180231
    Abstract: A continuous casting mold having at least one mechanically machined surface that is in contact with molten material during normal use of the mold in order to achieve a uniform distribution of the heat flux over the mold.
    Type: Application
    Filed: February 11, 2011
    Publication date: July 28, 2011
    Applicant: SMS SIEMAG AKTIENGESELLSCHAFT
    Inventors: Gereon Fehlemann, Albrecht Girgensohn
  • Patent number: 7958930
    Abstract: The invention relates to a wall (100) of a casting die for casting a molten metal. Die walls comprising a front plate (110) with a pocket borehole (112) and a rear plate (120) with a transversal borehole (122) aligned with the pocket borehole, on the cold side of the die front plate, are known in prior art. The aim of the invention is prevent the entrance of cooling liquid from the transition region (115), between the front plate (110) and the rear plate (120), into the pocket borehole (112) or the transversal borehole (122). To this end, a sealing element (140) having a longitudinal borehole is arranged in the transition region (115) in such a way that the longitudinal borehole of the sealing element is at least approximately aligned with the transversal borehole (122) in the rear plate of the die and the pocket borehole (112) in the front plate of the die.
    Type: Grant
    Filed: December 11, 2007
    Date of Patent: June 14, 2011
    Assignee: SMS Siemag Aktiengesellschaft
    Inventors: Gereon Fehlemann, Albrecht Girgensohn, Jörn Hoffmeister
  • Patent number: 7913745
    Abstract: A method for continuously casting a billet with a small cross section in which a curved type or vertical type continuous casting machine is used while oscillating the mold upward and downward is characterized in that the casting machine is provided with a mechanism for withdrawing speed oscillation. The mechanism has structural play in the directions of driving and reverse driving in such a manner that the amount of a play-incurred displacement from the neutral position of the structural play in the direction of billet driving or reverse driving is ±2 to ±30 mm in the direction of driving on the pinch roll circumferential length equivalent basis. The mechanism produces a returning force toward the neutral position and operational parameters such as the billet length, the specific amount of secondary cooling water, the casting speed as well as the oscillation amplitude and frequency are optimized.
    Type: Grant
    Filed: October 15, 2009
    Date of Patent: March 29, 2011
    Assignee: Sumitomo Metal Industries, Ltd.
    Inventors: Yuichi Tsukaguchi, Masayuki Kawamoto, Masahito Hanao, Atsushi Hirata, Hiroshi Hayashi, Manabu Adachi
  • Patent number: 7909232
    Abstract: A mold welded with a dissimilar metal member manufactured by pressingly bringing the dissimilar metal member into contact with a mold formed of copper or a copper alloy in a stationary state while rotating the dissimilar metal member at a high speed, stopping the dissimilar metal member, and providing a forced pressure larger than the pressure in the first step to the mold. The present mold solves the problems of efficient cooling and attachment of back frame. Also, a variety of problems including cutting processing loss of copper or copper alloy plate, long processing times, heat distortion and heat deterioration of copper plates, etc, can be solved. Further, welding position precision and welding strength of stud bolts can be improved. Finally, the invention concerns a mold welded with a dissimilar metal member where the mold is manufactured by the first step shown above.
    Type: Grant
    Filed: February 25, 2009
    Date of Patent: March 22, 2011
    Assignee: Nomura Plating Co., Ltd.
    Inventors: Masahiro Nitta, Masayuki Mito, Ryoichi Ikeo, Takeshi Shinoda
  • Patent number: 7909086
    Abstract: Continuously casting a billet with a small cross section by pouring molten steel into a mold using a cylindrical immersion nozzle is characterized by measuring the molten steel level in the mold using an eddy current sensor. The level is controlled based on the thus-measured value, motion of steel in the mold is adjusted by electromagnetic stirring, a cooling zone during the final period of solidification is disposed within a certain region ranging from the meniscus to the specific site, and casting speed is adjusted so that the region in which the solid phase ratio at the billet center is 0.3-0.99 may be included in the cooling zone during the final period of solidification. The secondary cooling water amount and the billet surface temperature at the entrance to the cooling zone the density of cooling water in the cooling zone during the final period of solidification are optimized.
    Type: Grant
    Filed: October 15, 2009
    Date of Patent: March 22, 2011
    Assignee: Sumitomo Metal Industries, Ltd.
    Inventors: Yuichi Tsukaguchi, Masayuki Kawamoto, Masahito Hanao, Atsushi Hirata, Hiroshi Hayashi
  • Publication number: 20110048662
    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: Application
    Filed: August 28, 2008
    Publication date: March 3, 2011
    Applicant: GAUTSCHI ENGINEERING GMBH
    Inventors: Oliver Moos, Rudolf Bossard
  • Patent number: 7896061
    Abstract: The objective of the present invention is to provide a product that is superior in barrier properties (for example, zinc erosion resistance and anti-adhesive property), abrasion resistant property, surface hardening property, thermal stability and life-time prolonging property. The product, which is made in direct contact with molten metal containing zinc in a molten state, is characterized by including an iron-tungsten alloy coating that is applied to a part or the whole of the surface of the product that comes directly in contact with the molten metal.
    Type: Grant
    Filed: February 1, 2006
    Date of Patent: March 1, 2011
    Assignees: Nomura Plating Co., Ltd., Osaka Prefectural Government
    Inventors: Keiji Nakai, Tokumi Ikeda, Takahiro Hamada, Tsutomu Morikawa, Takashi Nishimura, Takuo Nakade