Combined With Rolling Patents (Class 29/527.7)
  • Patent number: 11542581
    Abstract: A titanium product includes an inner layer portion and a surface layer portion joined to the inner layer portion. The surface layer portion has a composition consisting of, by mass %, O: 0.4% or less, Fe: 0.5% or less, Cl: 0.020% or less, the balance: Ti and impurities. The inner layer portion 3 has pores and a composition consisting of, by mass %, O: 0.4% or less, Fe: 0.5% or less, Cl: more than 0.020% and 0.60%, the balance: Ti and impurities. The area fraction of the pores in the inner layer portion in a cross-section perpendicular to the longitudinal direction of the titanium product is more than 0% and not more than 30%. The Cl content (ClI) of the inner layer portion, a thickness (tS) of the surface layer portion, and a thickness (tI) of the inner layer portion satisfy the expression [ClI?0.03+0.02×tS/tI].
    Type: Grant
    Filed: March 9, 2017
    Date of Patent: January 3, 2023
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Tomoyuki Kitaura, Yoshihisa Shirai, Hideki Fujii
  • Patent number: 11219932
    Abstract: A method of controlling a rolling mill production system for production of a coil-shaped end product from a slab, the production including processing the slab by sequentially arranged production units, the processing by the production units resulting in a respective strip-shaped product having physical data, the method including modeling, under consideration of the physical data, the processing of a testing product by a plurality of production units arranged downstream from a given production unit while taking into account the physical data. If the modelling shows that, under consideration of the physical data, one of the products resulting from processing by the downstream production units does not meet a predetermined quality criterion, the intended manufacture of the product is interrupted and a signal relating to the interrupting is outputted.
    Type: Grant
    Filed: March 12, 2019
    Date of Patent: January 11, 2022
    Assignees: THYSSENKRUPP AG, THYSSENKRUPP HOHENLIMBURG GMBH
    Inventor: Rainer Osthoff
  • Patent number: 10816111
    Abstract: The present invention provides a transfer line exchanger which is optimized for one or more objective functions of interest such as pressure drop, erosion rate, fouling, coke deposition and operating costs. The transfer line exchanger is designed by computer modeling a transfer line exchanger in which the cross section of flow path is substantially circular and modeling the operation of the transfer line under industrial conditions to validate the model design and its operation. Then iteratively the model design is deformed and the operation of the deformed part is modeled and compared to values obtained with other deformed models until the value of the objective function is optimized (e.g. at an extreme) or the change in the objective function is approaching zero.
    Type: Grant
    Filed: January 20, 2016
    Date of Patent: October 27, 2020
    Assignee: NOVA Chemicals (International) S.A.
    Inventors: Eric Clavelle, Edgar Yajure, Leslie Wilfred Benum, Edward Christopher Foy, David Eisenhawer
  • Patent number: 10131979
    Abstract: In a rolling process for reverse thermomechanically rolling an aluminum plate involving a plurality of rolling passes, identifying data are determined for thermally guiding the rolling process. Then a value of a state variable, from which a temperature of the aluminum plate can be deduced, is continuously measured and a pass schedule is determined for the rolling process on the basis of the value of the measured state variable and of the identifying data. The pass schedule provides for a rolling pause between at least two successive rolling passes, during which rolling of the aluminum plate is interrupted for cooling purposes.
    Type: Grant
    Filed: April 17, 2013
    Date of Patent: November 20, 2018
    Assignee: PRIMETALS TECHNOLOGIES GERMANY GMBH
    Inventors: Matthias Kurz, Birger Schmidt
  • Patent number: 9493859
    Abstract: Manufacturing method of a copper alloy sheet including melting and casting a raw material of a copper alloy having a composition containing 1.0 mass % to 3.5 mass % Ni, 0.5 mass % to 2.0 mass % Co, and 0.3 mass % to 1.5 mass % Si with a balance being composed of Cu and an unavoidable impurity. The method includes the steps of first cold rolling, intermediate annealing, second cold rolling, a solution heat treatment and aging. The solution heat treatment includes: heating at 800° C. to 1020° C.; first quenching to 500° C. to 800° C.; maintaining the 500° C. to 800° C. temperature for 10 seconds to 600 seconds; and second quenching to 300° C. or lower.
    Type: Grant
    Filed: October 30, 2014
    Date of Patent: November 15, 2016
    Assignee: DOWA METALTECH CO., LTD.
    Inventors: Weilin Gao, Akira Sugawara, Ryosuke Miyahara, Hisashi Suda
  • Patent number: 9186711
    Abstract: A rolling line for the production of flat product includes a casting machine to continuously case a thin slab, a temperature maintenance and homogenization unit, a rolling unit a forming stand or roughing stand connected to the exit of the casting machine to reduce the thickness of the slab. The forming stand or roughing stand is configured to perform an adaptive reduction of the thickness of the cast slab smaller than or equal to about 65% at least as a function of the thickness, width and type of material of the finished flat product. The rolling unit is configured to perform a reduction of the reduction of the thin slab coming from the temperature maintenance and homogenization unit to a thickness comprised between about 1.2 mm and about 20 mm by three or fewer double rolling passes through the double rolling stand.
    Type: Grant
    Filed: June 14, 2011
    Date of Patent: November 17, 2015
    Assignee: DANIELI & C. OFFICINE MECCANICHE SPA
    Inventors: Gianpietro Benedetti, Paolo Bobig
  • Patent number: 8992661
    Abstract: A series of inventions leading to the production of specific aluminum alloys (especially aluminum beverage can sheet product) through novel approach of introducing, selectively partitioning and managing alloying elements. This invention also enables manufacturing practices to enhance the performance characteristics of aluminum alloys produced. The selected elements can be derived from carbon anodes made from calcined petroleum coke with high metallic contents (such as nickel and vanadium). Alloying elements can also be introduced and managed from other raw material such as alumina and bath constituents added during aluminum smelting process. Additionally, cell operating parameters, such as cell temperature, off gas flow rate, aluminum tapping rate and impurity partition characteristics can also be manipulated to produce low cost aluminum alloys and facilitate utilization of high metallic content calcined petroleum coke.
    Type: Grant
    Filed: August 27, 2012
    Date of Patent: March 31, 2015
    Assignee: Tri-Arrows Aluminum Inc.
    Inventors: Gyan Jha, Frank R. Cannova, Subodh K. Das, Barry A. Sadler
  • Publication number: 20150047752
    Abstract: A high strength interstitial free low density steel and method for producing the steel.
    Type: Application
    Filed: April 10, 2013
    Publication date: February 19, 2015
    Applicant: TATA STEEL NEDERLAND TECHNOLOGY B.V.
    Inventors: Cheng Liu, Radhakanta Rana
  • Publication number: 20150027597
    Abstract: This invention relates to a high strength bake-hardenable low density steel and to a method for producing said the steel.
    Type: Application
    Filed: February 19, 2013
    Publication date: January 29, 2015
    Applicant: TATA STEEL NEDERLAND TECHNOLOGY BV
    Inventors: Cheng Liu, Radhakanta Rana
  • Publication number: 20150020992
    Abstract: A non-scaling heat-treatable steel with particular suitability for producing hardened or die-hardened components is disclosed, characterized by the following chemical composition in % by weight: C 0.04-0.50; Mn 0.5-6.0; Al 0.5-3.0; Si 0.05-3.0; Cr 0.05-3.0; Ni less than 3.0; Cu less than 3.0; Ti 0.010-?0.050; B 0.0015-?0.0040; P less than 0.10; S less than 0.05; N less than 0.020; remainder iron and unavoidable impurities. Further disclosed is a method for producing a non-scaling hardened component from the steel and a method for producing a hot strip from a steel.
    Type: Application
    Filed: March 19, 2013
    Publication date: January 22, 2015
    Inventors: Joachim Schöttler, Friedrich Luther, Stefan Mütze
  • Publication number: 20150020931
    Abstract: A high strength and high toughness magnesium alloy, characterized in that it is a plastically worked product produced by a method comprising preparing a magnesium alloy cast product containing a atomic % of Zn, b atomic % of Y, a and b satisfying the following formulae (1) to (3), and the balance amount of Mg, subjecting the magnesium alloy cast product to a plastic working to form a preliminary plastically worked product, and subjecting the preliminary plastically worked product to a heat treatment, and it has a hcp structure magnesium phase and a long period stacking structure phase at an ordinary temperature; (1) 0.5?a<5.0 (2) 0.5<b<5.0 (3) ?a???b.
    Type: Application
    Filed: August 1, 2014
    Publication date: January 22, 2015
    Inventors: Yoshihito KAWAMURA, Michiaki YAMASAKI
  • Patent number: 8677798
    Abstract: A device for turning over a flattening element having a plurality of spaced-apart cylinders rotatably mounted on a frame and a device for securing it to the turning-over device, includes two uprights extending vertically from a base. A supporting and securing device for the flattening element engages with the securing device of the flattening element. The supporting and securing device is disposed between the uprights. A device rotates the supporting and securing device about a horizontal axis between a first position in which, when the flattening element is connected to the turning-over device, the cylinders of the flattening element are oriented downward, and a second position in which, when the flattening element is connected to the turning-over device, the cylinders of the flattening element are oriented upward. Vertical translation drive devices vertically translate the supporting and securing device. Each vertical translation drive device is connected to one respective upright.
    Type: Grant
    Filed: April 22, 2009
    Date of Patent: March 25, 2014
    Assignee: Siemens VAi Metals Technologies SAS
    Inventors: Jean-Pierre Chazal, Bernard Dumas, Vincent Philippaux
  • Publication number: 20140034433
    Abstract: The present invention discloses a method for producing brake drum, wherein three different metallic materials are used for the three-layer construction; and two layers made of different molten metallic materials are cast based upon the prefabricated steel shell (with steel or gray iron for the structural layer and the Mo-containing, abrasion-resistant alloy cast iron for the braking friction layer) so that atoms from these two adjacent but different metallic layers inter-diffuse across the interface to form a solid fusant or an inter-metallic compound, thereby generating a very strong metallurgical bond. The present invention also provides a brake drum, comprising a brake drum shell, a structural layer inside the brake drum shell, and a friction layer inside the brake drum structural layer and for braking.
    Type: Application
    Filed: July 24, 2013
    Publication date: February 6, 2014
    Applicant: JIAXING STONE WHEEL CO., LTD.
    Inventors: Jianrong Zhang, Qiangsheng Lin, Jianming Chai, Xinsheng Wu
  • Publication number: 20140007412
    Abstract: The present invention relates to a method for manufacturing an inner structure of a regenerative cooling type combustion chamber, and more specifically to a method for manufacturing the inner structure of the regenerative cooling type combustion chamber, including the steps of: manufacturing a cylinder structure by performing a vacuum casting process or an air casting process for a copper alloy; manufacturing a circular plate having a constant thickness by forging and rolling the cylinder structure; thermally and mechanically processing the circular plate; spinning the circular plate to manufacture the shape of the regenerative cooling type combustion chamber; and thermally processing the shape of the regenerative cooling type combustion chamber.
    Type: Application
    Filed: December 23, 2011
    Publication date: January 9, 2014
    Applicant: KOREA AEROSPACE RESEARCH INSTITUTE
    Inventors: Chul Sung Ryu, Hwan Seok Choi, Keum Oh Lee, Jong Gyu Kim, Byoung Jik Lim, Kyu Bok Ahn, Mun Ki Kim
  • Patent number: 8555687
    Abstract: The present disclosure relates to a hot rolling apparatus for manufacturing a metal plate by hot-rolling-treating a metal material including copper.
    Type: Grant
    Filed: June 18, 2008
    Date of Patent: October 15, 2013
    Assignees: IHI Corporation, IHI Metaltech Co., Ltd.
    Inventors: Kengo Ishige, Yasuo Matsunaga, Hiroyuki Otsuka, Kenichi Ide, Masahiro Kuchi, Hisashi Honjou
  • Publication number: 20130263436
    Abstract: A continuously cast slab with a rectangular cross section, and made of high alloy containing Cr of 20 to 30 mass %, Ni of 30 to 50 mass %, and at least one of Mo and W as Mo+0.5W of 1.5 mass % or more is subjected to blooming and billet-making to yield a round bar having a diameter of 150 to 400 mm as a starting material of the seamless tube. The blooming and billet-making process is performed under a condition satisfying a relation of 1.3?H/D?1.8 where a short side length of the cross section of the cast slab is defined as H (mm), and the diameter of the round bar is defined as D (mm). The round bar is pierced-rolled to make a hollow blank; the hollow blank tube is elongation-rolled, and then diameter-adjusting-rolled to make the seamless tube, thereby preventing end cracking during piercing-rolling, and increasing yield.
    Type: Application
    Filed: December 20, 2011
    Publication date: October 10, 2013
    Applicant: NIPPON STEEL & SUMITOMO METAL CORPORATION
    Inventors: Naoya Hirase, Takanori Satou
  • Publication number: 20130212866
    Abstract: A method of forming an electrode includes casting a molten metal in a mould to form an electrode with a header portion and a blade portion. The blade portion of the electrode is then rolled after it has been cast. The blade portion may be rolled into at least two different thicknesses. In one embodiment the metal is lead or lead alloy and the method relates to the forming of a lead or lead alloy anode.
    Type: Application
    Filed: April 2, 2013
    Publication date: August 22, 2013
    Inventors: Thomas John Meyer, John Thomas Turner
  • Publication number: 20130193223
    Abstract: The present discloses a steel rail for high speed and quasi-high speed railways and a manufacturing method thereof. The steel rail having a superior rolling contact fatigue property can be obtained by reducing content of carbon in conjunction with controlled cooling after rolling. The steel rail includes 0.40-0.64% by weight of C, 0.10-1.00% by weight of Si, 0.30-1.50% by weight of Mn, less than or equal to 0.025% by weight of P, less than or equal to 0.025% by weight of S, less than or equal to 0.005% by weight of Al, more than 0 and less than or equal to 0.05% by weight of a rare earth element, more than 0 and less than or equal to 0.20% by weight of at least one of V, Cr, and Ti, and a remainder of Fe and inevitable impurities.
    Type: Application
    Filed: September 2, 2011
    Publication date: August 1, 2013
    Applicant: Pangang Group Panzhihua Steel & Vanadium Co. Ltd
    Inventors: Dongsheng Mei, Ming Zou, Zhenyu Han, Quan Xu, Hua Guo, Yong Deng, Dadong Li, Li Tang, Yun Zhao, Jianhua Liu
  • Publication number: 20130160277
    Abstract: A rolling line (10) for the production of flat products (111) comprises a casting machine (12) suitable to continuously cast a thin slab (11), a temperature maintenance and homogenization unit (18), a rolling unit (22) comprising at least a double rolling stand (23a, 23b) of the Steckel reversing type downstream of the temperature maintenance and homogenization unit (18), at least a forming stand or roughing stand (20), directly connected immediately to the exit of the casting machine (12) and upstream of the temperature maintenance and homogenization unit (18), and suitable to reduce the thickness of the slab (11) just solidified. The forming stand or roughing stand (20) is configured to perform an adaptive reduction of the thickness of the cast slab (11) smaller than or equal to about 65% at least as a function of the thickness, width and type of material of the finished flat product.
    Type: Application
    Filed: June 14, 2011
    Publication date: June 27, 2013
    Applicant: DANIELI & C. OFFICINE MECCANICHE SPA
    Inventors: Gianpietro Benedetti, Paolo Bobig
  • Patent number: 8459333
    Abstract: A rolling mill for producing rolled rolling stock is operated in a continuous manner by integrally forming the rolling stock during scheduled operation from a supply device which supplies the stock to the rolling mill to one finishing rolling train arranged downstream of the rolling stock supply device by guiding the stock into the finishing rolling train continuously and rolling it to form a first outflow product. The operation is monitored for a deviation from the scheduled operation that influences the rolling process, wherein in case of a deviation measures are taken to examine whether a second outflow product, which is different from the first outflow product, can still be produced. If the second outflow product cannot be produced, the operation of the rolling mill is altered from a continuous operation to a discontinuous operation, whereby production failures caused by undesired process deviations in a rolling mill can be reduced.
    Type: Grant
    Filed: April 14, 2010
    Date of Patent: June 11, 2013
    Assignee: Siemens Aktiengesellschaft
    Inventors: Matthias Kurz, Hans-Ulrich Löffler
  • Patent number: 8458887
    Abstract: A method of casting a metal ingot with a microstructure that facilitates further working, such as hot and cold rolling. The metal is cast in a direct chill casting mold, or the equivalent, that directs a spray of coolant liquid onto the outer surface of the ingot to achieve rapid cooling. The coolant is removed from the surface at a location where the emerging embryonic ingot is still not completely solid, such that the latent heat of solidification and the sensible heat of the molten core raises the temperature of the adjacent solid shell to a convergence temperature that is above a transition temperature for in-situ homogenization of the metal. A further conventional homogenization step is then not required. The invention also relates to the heat-treatment of such ingots prior to hot working.
    Type: Grant
    Filed: November 16, 2010
    Date of Patent: June 11, 2013
    Assignee: Novelis Inc.
    Inventors: Robert Bruce Wagstaff, Wayne J. Fenton
  • Patent number: 8381385
    Abstract: Method and apparatus for forming aluminum ingot having shaped ends to avoid alligatoring during rolling.
    Type: Grant
    Filed: July 15, 2008
    Date of Patent: February 26, 2013
    Assignee: Tri-Arrows Aluminum Inc.
    Inventors: Gyan Jha, J. David Brown, Shridas Ningileri, Weimin Yin, Randall Bowers
  • Patent number: 8381384
    Abstract: Method and apparatus for forming aluminum ingot having shaped ends to avoid alligatoring during rolling.
    Type: Grant
    Filed: June 25, 2008
    Date of Patent: February 26, 2013
    Assignee: Tri-Arrows Aluminum Inc.
    Inventors: Gyan Jha, J. David Brown, Shridas Ningilcri, Weimin Yin, Randall Bowers
  • Publication number: 20130037408
    Abstract: The present invention provides an indium target and manufacturing method thereof, where deposition rate is high, initial discharge voltage is low, and deposition rate and discharge voltage, from the start of sputtering to the end of sputtering, are stable. In the indium target, an aspect ratio (length of longer direction/length of shorter direction) of crystal particle, observed from cross-section direction of the target, is 2.0 or less.
    Type: Application
    Filed: July 7, 2011
    Publication date: February 14, 2013
    Applicant: JX NIPPON MINING & METALS CORPORATION
    Inventors: Yousuke Endo, Masaru Sakamoto
  • Patent number: 8365562
    Abstract: Apparatus and method of controlling strip geometry in casting strip having a rolling mill. A target thickness profile is calculated as a function of the measured entry thickness profile of the strip while satisfying profile and flatness parameters. A differential strain feedback from longitudinal strain in the strip is calculated by a control system by comparing the exit thickness profile with the target thickness profile, and a control signal is generated to control a device capable of affecting the geometry of the strip processed by the hot rolling mill. A feed-forward control reference and/or sensitivity vector may also be calculated as a function of the target thickness profile, and used in generating the control signal sent to the control device. The control device may be selected from one or more of the group consisting of a bending controller, gap controller and coolant controller.
    Type: Grant
    Filed: June 7, 2012
    Date of Patent: February 5, 2013
    Assignee: Nucor Corporation
    Inventors: Richard Britanik, Tino Domanti, Terry L. Gerber, Jason A. Mueller, Glen Wallace, Harold Bradley Rees
  • Patent number: 8322401
    Abstract: A method for making long metal rolled products by continuous casting, made by a continuous casting machine to two casting lines; shearing to size of the cast product; direct introduction of each segment, having an average temperature of at least 1000° C.-1150° C., into a maintenance and/or heating furnace that has a first and a second movement sections, each of the movement sections is disposed in axis respectively with one of the two casting lines to receive a respective segment; lateral transfer of each segment inside the furnace to dispose each segment in a third movement section disposed parallel and misaligned with respect to the first and the second movement sections and aligned to a rolling axis of a rolling line parallel and offset with respect to the two casting lines; and reduction of the section in a rolling mill defining said rolling axis.
    Type: Grant
    Filed: August 18, 2010
    Date of Patent: December 4, 2012
    Assignee: Danieli & C. Officine Meccaniche SpA
    Inventor: Gianpietro Benedetti
  • Patent number: 8322400
    Abstract: A method for making long metal rolled products by continuous casting at high hourly productivity, by a single casting machine, a product with a rectangular section; shearing to size of the cast product to define a segment of a length between 16 and 150 m and a weight between 10 and 100 tons; introduction of the segment, having an average temperature of at least 1000° C., into a maintenance and/or possible heating furnace having a first section for moving the cast product disposed in axis with the casting axis; lateral transfer of the segment inside the furnace to transfer the segment to a second section for moving the cast product disposed parallel and misaligned with respect to the first section and aligned with a rolling axis parallel and offset with respect to the casting axis; and reduction of the section in a rolling mill.
    Type: Grant
    Filed: August 18, 2010
    Date of Patent: December 4, 2012
    Assignee: Danieli & C. Officine Meccaniche SpA
    Inventor: Gianpietro Benedetti
  • Patent number: 8286691
    Abstract: A method and plant for making long metal rolled products, in which a continuous casting is provided by a single casting machine, defining a casting axis, to cast a product with a quadrangular or equivalent section, a reduction of the section in a rolling mill defining a rolling axis substantially coinciding with the casting axis, and a selective accumulation and maintenance at temperature of a plurality of segments of cast product sheared to size in a misaligned position with respect to the cast axis and/or the rolling axis, inside a maintenance box furnace, for a time correlated to a condition of temporary interruption of the reduction step, so as to allow continuity of the continuous casting step.
    Type: Grant
    Filed: August 18, 2010
    Date of Patent: October 16, 2012
    Assignee: Danieli & C. Officine Meccaniche Spa
    Inventor: Gianpietro Benedetti
  • Patent number: 8276647
    Abstract: A method and an apparatus for producing hot-rolled products in a combined casting-rolling installation. A method and a combined casting-rolling installation with which an uninterrupted continuous casting process can be maintained not only when there is a planned interruption to production but also when there is an unplanned interruption to production, occurring for example in a heating zone, a finishing mill train, a cooling zone or a storage device.
    Type: Grant
    Filed: March 4, 2009
    Date of Patent: October 2, 2012
    Assignee: Siemens Vai Metals Technologies GmbH
    Inventors: Gerald Hohenbichler, Michael Jesche, Daniel Ness, Wolfgang Peitl, Heinrich Puehringer, Alois Seilinger, Robert Andrew Shore
  • Patent number: 8186422
    Abstract: A method for the continuous casting of thin metal strip in a continuous casting installation, in which metal is discharged vertically downward from a mold, the metal strip is deflected from the vertical direction to the horizontal direction, and the metal strip is supported and/or conveyed and/or plastically deformed by a number of pairs of drive rolls. At least one pair of drive rolls plastically deforms the metal strip without significantly changing the mean thickness of the metal strip, namely with a change in the mean thickness of the metal strip of less than 5%, such that the deformation in the pairs of drive rolls produces material flow exclusively in the direction transverse to the direction of conveyance of the metal strip.
    Type: Grant
    Filed: November 27, 2006
    Date of Patent: May 29, 2012
    Assignee: SMS Siemag Aktiengesellschaft
    Inventors: Wolfgang Hennig, Holger Beyer-Steinhauer, Christian Bilgen
  • Patent number: 8163112
    Abstract: Methods of fabricating a uranium-bearing foil are described. The foil may be substantially pure uranium, or may be a uranium alloy such as a uranium-molybdenum alloy. The method typically includes a series of hot rolling operations on a cast plate material to form a thin sheet. These hot rolling operations are typically performed using a process where each pass reduces the thickness of the plate by a substantially constant percentage. The sheet is typically then annealed and then cooled. The process typically concludes with a series of cold rolling passes where each pass reduces the thickness of the plate by a substantially constant thickness amount to form the foil.
    Type: Grant
    Filed: May 6, 2009
    Date of Patent: April 24, 2012
    Assignee: Babcock & Wilcox Technical Services Y-12, LLC
    Inventors: Jackie G. Gooch, Amy L. DeMint
  • Patent number: 8162032
    Abstract: Process and related plant for manufacturing steel plates with thickness <100 mm and width of up to 4000 mm from a continuous casting step for slabs, comprising a liquid core reduction step, without interruptions until completion of a finishing rolling step with high reduction ratios in at least one stand. The average temperature when entering the rolling step is ?1200° C., but can be reduced for unalloyed or low alloyed steel greatest.
    Type: Grant
    Filed: July 19, 2005
    Date of Patent: April 24, 2012
    Inventor: Giovanni Arvedi
  • Patent number: 8145346
    Abstract: A method of monitoring the physical state of a hot-rolled sheet or hot-rolled strip while controlling a plate rolling train for the reversing working a hot-rolled sheet or hot-rolled strip. For the reversing rolling of the hot-rolled sheet or hot-rolled strip a rolling stand is provided. At a starting point, an initial state of the hot-rolled sheet or hot-rolled strip in a model is determined, from which state at least one physical state variable is derived. Further, a cyclical updating of the state during the working of the hot-rolled sheet by using the model of the hot-rolled sheet or hot-rolled strip and the plate rolling train is provided, wherein monitoring of the path of the hot-rolled sheet or hot-rolled strip and operating parameters influencing and/or reproducing the state are taken into account.
    Type: Grant
    Filed: October 2, 2007
    Date of Patent: March 27, 2012
    Assignee: Siemens Aktiengesellschaft
    Inventors: Matthias Kurz, Birger Schmidt, Klaus Weinzierl
  • Patent number: 8087449
    Abstract: A rolling method in a rolling line, to obtain strip with a thickness varying from 0.7 mm to 20 mm, for steel which can be cast in the form of thin slabs with a thickness from 30 mm to 140 mm, the line includes a continuous casting device; a tunnel furnace for maintenance/equalization and possible heating; a rolling train having a roughing train and a finishing train; a rapid heating unit, with elements able to be selectively activated, interposed between the roughing train and the finishing train. For each lay-out of the rolling line, the position of the rapid heating unit which defines the number of stands which form the roughing train, disposed upstream of the unit, and the number of stands which form the finishing train, disposed downstream of the unit, is calculated as a function of the product of the thickness and speed of the thin slab.
    Type: Grant
    Filed: June 1, 2010
    Date of Patent: January 3, 2012
    Assignee: Danieli & C. Officine Meccaniche SpA
    Inventors: Gianpietro Benedetti, Paolo Bobig
  • Patent number: 8079131
    Abstract: The present invention includes a step of cooling a molten metal within a fine space present in the inside of an object and hardening it while applying a forced external force exceeding atmospheric pressure to the molten metal. The fine space is opened on the outer surface of the object in terms of one end thereof. The forced external force is given by at least one member selected among a pressing pressure, an injection pressure and a rolling compaction and applied to the molten metal from the opening surface side on which the fine space is opened, in a state that the other end side of the fine space is closed.
    Type: Grant
    Filed: February 27, 2009
    Date of Patent: December 20, 2011
    Assignee: Napra Co., Ltd.
    Inventors: Shigenobu Sekine, Yurina Sekine, Ryuji Kimura
  • Patent number: 8069904
    Abstract: In a method for producing hot strips from a deformable lightweight steel which includes as main elements Fe, Mn, Si and Al, melt is cast close to its final dimension in a horizontal continuous strip casting installation under a protective gas to form a pre-strip between 6 and 20 mm, and the temperature of the pre-strip is adjusted after complete solidification and before the beginning of a hot-rolling process. The pre-strip is passed through a device under a protective gas for homogenization in concert with a selective maintenance of the temperature, cooling or heating, and subsequently subjected to a hot-rolling process having at least one pass with a total degree of deformation of at least 50%, and is then reeled as a hot strip following the cooling process. The hot-rolling process is executed in-line or in decoupled manner depending on the ratio of casting speed to rolling speed.
    Type: Grant
    Filed: December 14, 2005
    Date of Patent: December 6, 2011
    Assignee: SMS Siemag AG
    Inventors: Karl-Heinz Spitzer, Hellfried Eichholz, Markus Schäperkötter, Guido Bormann
  • Patent number: 8062498
    Abstract: A method of manufacturing a cathode plate (1) that is used in the electrolytic cleaning and recovery of metals, the cathode plate being at least partly manufactured of stainless steel and the surface of the cathode plate being treated in at least one stage, whereby the cathode plate is formed by cutting it from a solid plate-like material (2), whereby, essentially before cutting (4) the cathode plate to shape, at least part of the surface constituting the cathode plate is subjected to a mechanical treatment (3) to improve the adhesion properties of the surface. The invention also relates to the cathode plate.
    Type: Grant
    Filed: February 13, 2008
    Date of Patent: November 22, 2011
    Assignee: Outotec Oyj
    Inventor: Lauri Palmu
  • Publication number: 20110220252
    Abstract: A dual-phase steel, a flat product and processes for the production thereof. The dual-phase steel having a strength of at least 950 MPa, good deformability, and good surface finish. It is possible, when a simple production process is used, for the flat product produced from this steel to be formed into a complexly formed component, such as part of a car body, either uncoated or provided with an anti-corrosion coating. The steel according to the invention has a structure comprising 20-70% martensite, up to 8% retained austenite and the remainder ferrite and/or bainite and has the following composition (in % by weight): C: 0.050-0.105%, Si: 0.20-0.60%, Mn: 2.10-2.80%, Cr: 0.20-0.80%, Ti: 0.02-0.10%, B: <0.0020%, Mo: <0.25%, Al: <0.10%, Cu: up to 0.20%, Ni: up to 0.10%, Ca: up to 0.005%, P: up to 0.2%, S: up to 0.01%, N: up to 0.012%, remainder iron and unavoidable impurities.
    Type: Application
    Filed: August 7, 2008
    Publication date: September 15, 2011
    Applicant: TYHSSENKRUPP STEEL EUROPE AG
    Inventors: Brigitte Hammer, Thomas Heller, Ekaterina Bocharova, Dorothea Mattissen, Günter Stich, Silke Strauss
  • Patent number: 8011418
    Abstract: A method of manufacturing a metal strip includes casting a slab (3) or preliminary strip (3?) in a casting machine (2) and subsequently rolling the cast slab (3) or preliminary strip (3?) in at least one rolling train (4, 5) in a first operating mode with the at least one rolling train being connected with the casting machine for continuously manufacturing the metal strip, and in a second operating mode removing the cast slab (3) or preliminary strip (3?) from the main transport line (6) with a shuttle system arranged between the casting machine (2) and the at least one rolling train (4, 5), storing the removed slab (3) or preliminary strip (3?), and subsequently transporting the removed slab (3) or preliminary strip back into the main transport line, with the removed slab (3) or preliminary strip (3?) being heated to a desired temperature or maintained at a desired temperature prior to the transport back into the main transport line (6) for discontinuously manufacturing the metal strip.
    Type: Grant
    Filed: August 21, 2008
    Date of Patent: September 6, 2011
    Assignee: SMA Siemag Aktiengesellschaft
    Inventors: Dieter Rosenthal, Stephan Krämer, Christoph Klein, Jürgen Seidel, Wolfgang-Dietmar Hackenberg
  • Patent number: 7984634
    Abstract: Disclosed is a milling device for inline-rolling a steel band which is produced especially by means of a twin-roll continuous casting process. Said milling device comprises at least two rolling units (20, 30) with working rolls (21, 31) that mill the steel band (11) and support rolls (22, 32) which support said working rolls. The working rolls and support rolls are rotatably mounted in bearing housings (23, 24, 33, 34). At least two rolling units (20, 30) are disposed successively in a monolithic or multipiece frame structure (15) such that the rolling temperatures between the rolling units differ only slightly while a simple and inexpensive design is created.
    Type: Grant
    Filed: February 23, 2006
    Date of Patent: July 26, 2011
    Assignee: Main Management Inspiration AG
    Inventors: Heinrich Marti, John Turley
  • Patent number: 7963136
    Abstract: Processes for continuous production of a thin metal strip, in particular a steel hot strip, directly from a metal melt and with a strip cast thickness of <10 mm by the roll-casting process. The cast metal strip is fed for in-line thickness reduction, and then to a storage device. To achieve a high-quality, hot-rolled metal strip with flatness tolerances comparable to those which can currently be achieved in the production of hot-rolled metal strip from continuous-cast thin slabs or slabs, at cast thicknesses of between 40 and 300 mm, in a continuous production process starting directly from metal melt. With the low strip cast thickness, a flatness measurement is performed on the moving metal strip, and the measurement results of this flatness measurement are used to influence the flatness of the metal strip in a targeted way.
    Type: Grant
    Filed: September 20, 2005
    Date of Patent: June 21, 2011
    Assignee: Siemens Vai Metals Technologies GmbH & Co
    Inventors: Andreas Flick, Andreas Schweighofer, Markus Brummayer, Gerald Hohenbichler, Gerald Eckerstorfer
  • Patent number: 7954539
    Abstract: A process and an ultracompact plant for the endless production of hot rolled steel strip comprising an ingot mold (15) that produces a very thin slab, having narrow sides with thickness in the range between 40 and 55 mm and a central swelling, at a speed in the range between 4 and 16 m/min. Such a slab, which displays a core in which the steel is still liquid, is passed through a vertical pre-rolling device (16) that reduces the thickness of the slab and flattens it. The solidified slab may thus be subjected to a first mild rolling by a conveyor (17) and, by forming a free curve, takes a horizontal position where it is subjected to a first surface descaling, a first rolling, a heating in an inductor (23), a second surface descaling and a series of reductions in a rolling mill (30) formed by at least two stands, by maintaining its temperature along the mill above the recrystallization point Ar3.
    Type: Grant
    Filed: March 20, 2008
    Date of Patent: June 7, 2011
    Assignee: Danieli & C.Officine Meccanicite, S.p.A.
    Inventors: Gianpietro Benedetti, Alfredo Poloni, Nuredin Kapaj
  • Patent number: 7946022
    Abstract: A copper alloy for electronic machinery and tools, having a surface layer of a work affected layer whose thickness is 0.2 ?m or below; and a method of producing the same.
    Type: Grant
    Filed: June 30, 2006
    Date of Patent: May 24, 2011
    Assignee: The Furukawa Electric Co., Ltd.
    Inventors: Takeo Uno, Chikahito Sugahara, Kuniteru Mihara
  • Patent number: 7942191
    Abstract: A method for producing a wide steel strip using thin slab continuous casting and rolling by the following steps a) casting a molten steel into a thin slab having a thickness of between 50 and 90 mm; b) cutting; c) soaking; d) heating by electromagnetic induction; e) descaling; f) rolling; g) cooling with laminar flow; and h) coiling. The method can effectively control the solution and precipitation of carbon, nitrogen, and sulfide in steel with a low cost. The process is easy and flexible, and steel can be produced in a wide range of categories. Further provided is a system for producing a wide steel strip with thin slab continuous casting and rolling.
    Type: Grant
    Filed: May 14, 2010
    Date of Patent: May 17, 2011
    Assignee: Wuhan Iron and Steel (Group) Corp
    Inventors: Chao Zhang, Zhonghan Luo, Zemin Fang, Jionghui Mao, Shenglin Chen, Ruoping Wang, Xiangxin Wang
  • Patent number: 7923127
    Abstract: A process for producing sheets of ?-TiAl includes the steps of forming a melt of a ?-TiAl alloy; casting the ?-TiAl alloy to form an as-cast ?-TiAl alloy; encapsulating the as-cast ?-TiAl alloy to form an as-cast ?-TiAl alloy preform; and rolling the as-cast ?-TiAl alloy preform to form a sheet comprising ?-TiAl.
    Type: Grant
    Filed: November 9, 2005
    Date of Patent: April 12, 2011
    Assignee: United Technologies Corporation
    Inventor: Gopal Das
  • Publication number: 20090238715
    Abstract: A steel sheet for forming having low-temperature heat treatment property, in which heat treatment is performed within a range of lower temperature than a conventional steel sheet in the event of hot press forming or post-heat treatment after cold forming, a method of manufacturing the same, and a method of manufacturing parts using the same. The steel sheet has a composition of, by weight, carbon (C): 0.15 to 0.35%, silicon (Si): 0.5% or less, manganese (Mn): 1.5 to 2.2%, phosphorus (P): 0.025% or less, sulfur (S): 0.01% or less, aluminum (Al): 0.01 to 0.05%, nitrogen (N): 50 to 200 ppm, titanium (Ti): 0.005 to 0.05%, tungsten (W): 0.005 to 0.1%, and boron (B): 1 to 50 ppm, wherein Ti/N: less than 3.4, where Ti/N is the atomic ratio of the corresponding elements, Ceq expressed by the following formula ranges from 0.48 to 0.58, and temperature Ar3 ranges from 670° C. to 725° C. Wherein Ceq=C+Si/24+Mn/6+Ni/40+Cr/5+V/14 where C, Si, Mn, Ni, Cr and V indicate the contents (wt %) of the respective elements.
    Type: Application
    Filed: July 31, 2008
    Publication date: September 24, 2009
    Applicant: POSCO
    Inventors: Yeol-Rae Cho, Jin Keun Oh, Sung-Ho Park
  • Publication number: 20090199391
    Abstract: The invention relates to a method for the continuous casting of thin metal strip (1) in a continuous casting installation (2), in which method metal leaves a die (3) vertically downwards, wherein the metal strip (1) is bent out from the vertical direction (V) into the horizontal direction (H) and wherein the metal strip (1) is supported and/or conveyed and/or plastically deformed by means of a number of pairs of driving rollers (4, 5, 6, 7, 8, 9, 10). In order to avoid a drop in quality, in particular when changing the casting parameters, it is provided according to the invention that at least one pair of driving rollers (8, 9, 10) plastically deforms the metal strip (1) without significantly changing the average thickness (d) of the metal strip (1). Furthermore, the invention relates to a continuous casting installation, in particular for carrying out this method.
    Type: Application
    Filed: November 27, 2006
    Publication date: August 13, 2009
    Inventors: Wolfgang Hennig, Holger Beyer-Steinhauer, Christian Bilgen
  • Publication number: 20090193645
    Abstract: A method for continuous casting and rolling at increased casting speed followed by hot rolling of relatively thin metal strand, especially steel strand (1), where presetting of target temperatures (6) of the hot strip (2) reduces temperature losses in the hot strip (2) by increasing the temperatures of the work rolls (4) at a predetermined rate of increase, starting from a low initial temperature (5), and by adjusting the strip temperature (15) to a target rolling temperature (6) of the hot strip (2) and/or by automatically controlling or regulating the intensity of the roll cooling (18).
    Type: Application
    Filed: January 17, 2009
    Publication date: August 6, 2009
    Inventors: Jurgen Seidel, Jurgen Klockner
  • Publication number: 20090139290
    Abstract: Apparatus and method of controlling strip geometry in casting strip having a rolling mill. A target thickness profile is calculated as a function of the measured entry thickness profile of the strip while satisfying profile and flatness parameters. A differential strain feedback from longitudinal strain in the strip is calculated by a control system by comparing the exit thickness profile with the target thickness profile, and a control signal is generated to control a device capable of affecting the geometry of the strip processed by the hot rolling mill. A feed-forward control reference and/or sensitivity vector may also be calculated as a function of the target thickness profile, and used in generating the control signal sent to the control device. The control device may be selected from one or more of the group consisting of a bending controller, gap controller and coolant controller.
    Type: Application
    Filed: December 10, 2008
    Publication date: June 4, 2009
    Applicant: NUCOR CORPORATION
    Inventors: Richard BRITANIK, Tino DOMANTI, Terry L. GERBER, Jason A. MUELLER, Glen WALLACE, Harold Bradley REES
  • Patent number: RE41944
    Abstract: In a wire drawing process for forming a wire rod containing iridium as a main component and which further contains nickel and at least one of platinum, rhodium and ruthenium, and having a cross-sectional area of not smaller than 0.05 mm2 and not larger than 1.2 mm2. The worked material is continuously heated red hot and/or white hot in a heating region 103 extending up to 60 mm from the work inserting surface 101a of a die 101 in a direction opposite that in which the work 102 moves, the work being heated to a temperature of 1000 to 1150° C. at a temperature measuring position 105 which is removed from the work inserting surface 101a by 20 mm. Furthermore, the temperature in the region 106 extending from the temperature measuring position 105 to the work inserting surface 101a is set to not lower than 1000° C., and the wire drawing rate is set to 300 to 1600 mm/min.
    Type: Grant
    Filed: October 24, 2008
    Date of Patent: November 23, 2010
    Assignee: NGK Spark Plug Co., Ltd.
    Inventors: Wataru Matsutani, Osamu Yoshimoto, Yoshihiro Matsubara