Including Cooling Patents (Class 72/201)
  • Patent number: 10589328
    Abstract: A roller stand (1) that has a roller stand frame (3) in which working rollers (4, 5), or working rollers (4, 5) and support rollers (8, 9), or working rollers (4, 5), intermediate rollers (10, 11), and support rollers (8, 9) are mounted. Each roller (4, 5, 8, 9, 10, 11) can be rotated about a respective rotational axis (6, 7). In a roller stand (1) without intermediate rollers (10, 11), the working rollers (4, 5) can be moved relative to one another in the direction of the respective rotational axis (6, 7), i.e. axially. In a roller stand (1) with intermediate rollers (10, 11), the same applies to the working rollers (4, 5) or the intermediate rollers (10, 11). Each of the axially movable rollers (4, 5 or 10, 11) has an effective barrel length (L) and a curved contour (R1, R2) which extends over the entire effective barrel length (L).
    Type: Grant
    Filed: May 12, 2016
    Date of Patent: March 17, 2020
    Assignee: PRIMETALS TECHNOLOGIES AUSTRIA GMBH
    Inventor: Alois Seilinger
  • Patent number: 10570471
    Abstract: An equipment line for manufacturing a seamless steel tube includes a steel heating device, a piercing device that pierces the steel into a hollow steel tube, a rolling mill that forms the hollow steel tube into a seamless steel tube having a predetermined shape, and a cooling system arranged between the heating device and the piercing device or between the piercing device and the rolling mill.
    Type: Grant
    Filed: September 25, 2014
    Date of Patent: February 25, 2020
    Assignee: JFE STEEL CORPORATION
    Inventors: Shunsuke Sasaki, Tatsuro Katsumura, Hideto Kimura
  • Patent number: 10562085
    Abstract: An equipment line for manufacturing heavy-walled steel products having excellent low-temperature toughness, the equipment line including a heating device, a cooling device, and a hot working device in this order. The working device includes plurality of hot working devices, and the cooling device is arranged on an entrance side of at least one of the plurality of hot working devices. Furthermore, a thermostat equipment is arranged on an exit side of the hot working device. The equipment line provides a steel product with a finer microstructure with a relatively small amount of working.
    Type: Grant
    Filed: September 25, 2014
    Date of Patent: February 18, 2020
    Assignee: JFE STEEL CORPORATION
    Inventors: Shunsuke Sasaki, Tatsuro Katsumura, Yasushi Kato
  • Patent number: 10518308
    Abstract: A rolling mill includes a frame, at least one pair of working cylinders capable of defining the air gap of the strip to be rolled, as well at least one line for spraying a lubricant and/or coolant fluid, arranged next to the plane of the strip to be rolled. The line is rigidly connected to the frame via a hinged mechanical link, the mechanical link including a resilient unit forcing the line into at least one operational position, toward the plane of the strip, and allowing, in the event that a force on the line tends to separate the line, greater than a threshold value, the deformation of the resilient unit against the return force thereof, and thus the retraction of the line toward a position separated from the at least one operational position.
    Type: Grant
    Filed: June 26, 2015
    Date of Patent: December 31, 2019
    Assignee: FIVES DMS
    Inventor: Conrad Ernst De La Graete
  • Patent number: 10507503
    Abstract: The invention relates to an apparatus (1) for the applying of and removal by suction of operating fluids onto rolling stock (2) and off rolling stock (2) in the inlet (4) of cold rolling systems (6) and comprises at least one spray device (7) arranged above or below a rolling stock transport line (8), wherein at least one operating fluid can be placed by the spray device (7) onto a surface of the rolling stock (2) or onto a surface of a working roll (9) which makes contact with the rolling stock (2), and to at least one suction removal device (10) which can be arranged above or below the rolling stock transport line (8) and on the same side of the rolling stock transport line (8) as the spray device (7), wherein the suction removal device (10) acts in the vicinity of the surface of the rolling stock (2) or of the working roll (9). The spray device (7) and the suction removal device (10) are attached onto a common component frame (12) and therefore form a compact unit (14.1; 14.2).
    Type: Grant
    Filed: March 6, 2015
    Date of Patent: December 17, 2019
    Assignee: SMS Group GmbH
    Inventors: Andreas Berendes, Edgar Filk, Dietrich Mathweis
  • Patent number: 10465262
    Abstract: A method for cooling a steel strip, comprising jetting mist to a steel strip passing through a cooling installation such that an amount of mist jetted to the steel strip is smaller in an edge portion in a width direction of the steel strip than in a center portion, sucking at least part of mist jetted to the steel strip, and cooling the steel strip at a sheet-passing speed such that, during a period between start and end of cooling, a temperature of the steel strip is within a film boiling temperature range and a temperature of the edge portion in the width direction of the steel strip is equal to or higher than a temperature of the center portion in at least a range of ? or more from the upstream side in the sheet-passing direction of a total cooling length of the cooling installation.
    Type: Grant
    Filed: February 23, 2015
    Date of Patent: November 5, 2019
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Koichi Nishizawa, Hiroshi Minehara, Yasuhiro Mori, Seiji Sugiyama, Masafumi Matsumoto
  • Patent number: 10378115
    Abstract: A process for secondary descaling of running metal strips, especially made of steel, during hot-rolling by-spraying water onto the surface of the running metal strips with spray rails having nozzles supplied with pressurized water, wherein the nozzles are supplied at a hydraulic pressure of from 3 to 30 bar, and wherein the nozzles are regulated so that heat flux density extracted from the strip (HF) resulting from the cooling of its surface by the sprayed water is between 6.5 and 20 MW/m2 for a strip temperature between 900 and 1100° C.
    Type: Grant
    Filed: August 20, 2008
    Date of Patent: August 13, 2019
    Assignee: ArcelorMittal France
    Inventors: Valerie Daeschler, Jean-Luc Borean, Nathalie Mikler, Gilles Dussart, Sylvain Mialot, Patrice Matet
  • Patent number: 10005114
    Abstract: A work roll cooling apparatus for a rolling mill includes: at least one chock (200) which is configured to support a work roll (100) in the rolling mill. The work roll (100) has an axis (X) about which it is rotatable. A shroud (300) so positioned adjacent the work roll rolling surface (100a) when the roll is in use to provide a cooling space within which a coolant is brought into contact with the work roll (100). The shroud includes a first part (301) disposed on the chock (200) to provide a predetermined gap (G) between the first part (301) and the work roll (100), a second part (302), and a connection for releasably connecting the first and second parts (301, 302).
    Type: Grant
    Filed: March 3, 2016
    Date of Patent: June 26, 2018
    Assignee: PRIMETALS TECHNOLOGIES AUSTRIA GMBH
    Inventor: Peter Christoforou
  • Patent number: 9901964
    Abstract: A device for cooling a roll for rolling materials, including a cooling shell opposite a sub-region of the roll surface circumference, for forming a cooling gap, through which a cooling fluid can flow, between the sub-region and the cooling shell. The device further includes a first lever which can be pivoted about a suspension point, which can be pivoted toward the roll surface, and which is rotatably connected to a first end region of the cooling shell, when viewed in the circumferential direction of the roll, and a second lever which can be pivoted about another suspension point, which can be pivoted toward the roll surface, and which is rotatably connected to the second end region of the cooling shell, when viewed in the circumferential direction of the roll, such that the cooling gap can be selectively reduced or increased by pivoting the levers.
    Type: Grant
    Filed: May 8, 2013
    Date of Patent: February 27, 2018
    Assignee: SMS GROUP GMBH
    Inventors: Matthias Kipping, Johannes Alken, Ralf Seidel, Torsten Müller
  • Patent number: 9651309
    Abstract: The present invention relates to an arrangement for treatment of articles by hot pressing. The pressing arrangement for treatment of articles by hot pressing comprises a pressure vessel including: a furnace chamber comprising a heat insulated casing and a furnace adapted to hold the articles. A heat exchanger unit is arranged below said furnace chamber and adapted to exchange thermal energy with pressure medium when the pressure medium is passing through said heat exchanger unit. According to the present invention, at least one first and second inlet or aperture, respectively, for passage of alternating warm and cold pressure medium are arranged in the heat insulated casing in proximity to the heat exchanger unit (i.e. at approximately same the height as, above or below the heat exchanger unit). The at least one second inlet (or lower inlet) is below the at least one first inlet (or upper inlet) but at same height as or below the heat exchanger unit.
    Type: Grant
    Filed: January 3, 2011
    Date of Patent: May 16, 2017
    Assignee: Quintus Technologies AB
    Inventor: Mats Gärdin
  • Patent number: 9643224
    Abstract: A device for cooling rolled stock, preferably for cooling during cold rolling, including a nozzle for applying a cooling medium to the rolled stock, wherein a cooling chamber that is in fluid communication with the nozzle and extends substantially parallel to the strip running plane is provided for applying the cooling medium to the rolled stock.
    Type: Grant
    Filed: November 26, 2013
    Date of Patent: May 9, 2017
    Assignee: SMS GROUP GMBH
    Inventors: Michael Breuer, Andreas Gramer, Johannes Alken, Dietrich Mathweis, Heiko Zetzsche
  • Patent number: 9539629
    Abstract: A method and device for cooling a preliminary strip of metal in a hot rolling mill including work rolls by spraying a cooling agent on to the preliminary strip, screening the preliminary strip in an edge area of the strip from influence of the cooling agent, and deflecting the cooling agent in the area of the strip edges of the preliminary strip, wherein the cooling agent is deflected from the strip edges in an area of an inlet guide of a work a work roll.
    Type: Grant
    Filed: September 21, 2009
    Date of Patent: January 10, 2017
    Assignee: SMS GROUP GMBH
    Inventors: Jürgen Seidel, Uwe Baumgärtel, Andreas Wied
  • Patent number: 9440271
    Abstract: The invention is directed to a device for straightening a stream of a cooling medium for cooling a roll or a metal strip. This device comprise a hollow body, extending over at least part of the width of the roll or the metal strip, and a tube, arranged in the hollow body and extending in the direction of the width of the roll or the metal strip, wherein the hollow body is divided in the direction of the width of the roll or the metal strip into a number of chambers, and the tube comprises openings for introducing cooling medium into the chambers of the hollow body, and the chambers respectively comprise an opening for the flowing out of cooling medium from the hollow body.
    Type: Grant
    Filed: January 31, 2013
    Date of Patent: September 13, 2016
    Assignee: SMS GROUP GMBH
    Inventors: Matthias Kipping, Johannes Alken, Ralf Seidel
  • Patent number: 9440272
    Abstract: Systems, methods, and devices for the production of aluminum rods from aluminum bars, aluminum wires from aluminum rods, and aluminum wires from aluminum bars are disclosed and described. Annealing steps are not needed or required in the disclosed methods.
    Type: Grant
    Filed: February 3, 2012
    Date of Patent: September 13, 2016
    Assignee: Southwire Company, LLC
    Inventors: Jeffrey D. Herrin, Thomas Noell Wilson, Clinton E. Watkins, Emory Barber, Tom Stephens
  • Patent number: 9427788
    Abstract: A cooling device comprises a manifold housing having a generally concave inner edge configured and dimensioned to surround a surface area of a work roll in a rolling mill. The manifold housing is of a modular design having multiple constituent sections that are internally configured to simultaneously apply both a liquid coolant and a pressurized gas to the surface area of the work roll.
    Type: Grant
    Filed: November 13, 2013
    Date of Patent: August 30, 2016
    Assignee: PRIMETALS TECHNOLOGIES USA LLC
    Inventor: Raymond P. Dauphinais
  • Patent number: 9421593
    Abstract: The invention relates to a method for to-be-cooled surface of cast material, rolled material (1) or a roll. Provided for the method is a nozzle, which comprises an inlet (3) and an outlet (5) lying opposite the surface to be cooled. Also provided is a preferably single-phase volume flow (V) of a cooling fluid, which is fed to the nozzle (2) via the inlet (3) and leaves the nozzle (2) through the outlet (5). According to the invention, the nozzle outlet (5) is mounted at a variable distance (d) from the surface to be cooled, wherein the volume flow (V) of the cooling fluid fed to the inlet (3) of the nozzle (2) is set in such a way that, in accordance with the Bernoulli principle, the nozzle (2) is sucked firmly against the surface (1) to be cooled. In addition, the invention is directed to a cooling device (10) for carrying out the method according to the invention and to a rolling device comprising this cooling device (10).
    Type: Grant
    Filed: July 1, 2013
    Date of Patent: August 23, 2016
    Assignee: SMS GROUP GMBH
    Inventors: Johannes Alken, Torsten Mueller, Thomas Haschke
  • Patent number: 9180506
    Abstract: A rolling mill apparatus and methods of hot rolling with targeted cooling. In one aspect, a mill having multiple roller stacks includes a cooling system that directs the bulk coolant flow to a heat exchanger having first and second heat exchangers in parallel. The first heat exchanger is adapted to cool the heated coolant to a first temperature for use in a first coolant stream discharged through a first set of nozzles during rolling, while the second heat exchanger is adapted to cool heated coolant to a lower temperature for use in a second coolant stream at a second temperature lower than the first for discharge through a second set of nozzles downstream to facilitate rolling or coiling of the rolled metal.
    Type: Grant
    Filed: March 7, 2014
    Date of Patent: November 10, 2015
    Assignee: Novelis Inc.
    Inventors: Krzysztof Ryszard Januszkiewicz, Timothy Francis Stanistreet
  • Patent number: 9174263
    Abstract: A component forming tool for forming a component from a blank includes a die forming shell having a first shell portion disposed at a first set of support elements and a second shell portion disposed at a second set of support elements. A first fluid line has a plurality of first fluid discharge ports at or near the first shell portion. A second fluid line has a plurality of second fluid discharge ports at or near respective ones of the first fluid discharge ports that are located in between the support elements. The component forming tool provides pressurized fluid in the first and second fluid lines and the pressurized fluids are discharged from the respective first and second fluid discharge ports. The fluid discharged from the second fluid line mixes with the fluid discharged from the first fluid line to cool the first shell portion.
    Type: Grant
    Filed: May 22, 2013
    Date of Patent: November 3, 2015
    Assignee: TEMPER IP, LLC
    Inventor: William C. Dykstra
  • Patent number: 9108235
    Abstract: The invention relates to a method for cooling a roll (1), in particular a working roll (1) of a hot-rolling system, comprising the steps of feeding coolant (3) by means of a nozzle (5) into a gap (7) between at least a portion of the roll surface and a cooling shell (9, 11) that can be placed against the portion of the roll surface, and adjusting the gap height (h) between the cooling shell (9, 11) and the roll surface. According to the invention, the adjustment of the gap height (h) comprises either measuring the pressure (pact) of the fed coolant (3) or measuring the volumetric flow rate (Vact) of the fed coolant (3). The invention further relates to a corresponding device (10) for cooling a roll (1).
    Type: Grant
    Filed: November 29, 2012
    Date of Patent: August 18, 2015
    Assignee: SMS Siemag AG
    Inventors: Matthias Kipping, Ralf Seidel, Johannes Alken
  • Patent number: 9074817
    Abstract: An apparatus for the treatment of a component using a fluidized bed of powder fluidized by a gas flow has a treatment chamber for receiving at least a treatment part of the component and for containing the fluidized bed. A fluidizing gas inlet provides fluidizing gas to the treatment chamber and a fluidizing gas outlet removes used fluidizing gas from the treatment chamber. A powder screen is located between the treatment chamber and the fluidizing gas outlet, the powder screen operable substantially to prevent loss of powder from the fluidizing bed entrained in the fluidizing gas removed from the treatment chamber. The treatment chamber can be small and moveable, and then applied to a part of a component to be treated. Heating of the fluidized bed may be provided by heating of the fluidizing gas in a fluidizing gas reservoir remote from the treatment chamber.
    Type: Grant
    Filed: November 21, 2012
    Date of Patent: July 7, 2015
    Assignee: ROLLS-ROYCE PLC
    Inventors: Bhrami Jegatheeswaram Pillai, Paul Anthony Goulding, Daniel Jason Howe, Kin Keung Chan
  • Publication number: 20150147221
    Abstract: A rolled steel sheet is provided. The rolled steel sheet has a mechanical strength greater than or equal to 600 MPa and an elongation at fracture that is greater than or equal to 20%. A a method for its fabrication is also provided. The chemical composition of the steel sheet includes 0.10?C?0.30%, 6.0?Mn?15.0%, 6.0?Al?15.0%, and optionally one or more elements selected from among: Si?2.0%, Ti?0.2%, V?0.6% and Nb?0.3%. The remainder of the composition includes iron and the unavoidable impurities resulting from processing. The ratio of the weight of manganese to the weight of aluminum is such that Mn Al > 1.0 . The microstructure of the sheet includes ferrite, austenite and up to 5% Kappa precipitates in area fraction.
    Type: Application
    Filed: May 27, 2013
    Publication date: May 28, 2015
    Applicant: ARCELORMITTTAL INVESTIGACIN Y DESARROLLO, S.L.
    Inventors: Astrid Perlade, Ian Alberto Zuazo Rodriguez, Xavier Garat
  • Publication number: 20150135792
    Abstract: A device for cooling a roll for rolling materials, including a cooling shell opposite a sub-region of the roll surface circumference, for forming a cooling gap, through which a cooling fluid can flow, between the sub-region and the cooling shell. The device further includes a first lever which can be pivoted about a suspension point, which can be pivoted toward the roll surface, and which is rotatably connected to a first end region of the cooling shell, when viewed in the circumferential direction of the roll, and a second lever which can be pivoted about another suspension point, which can be pivoted toward the roll surface, and which is rotatably connected to the second end region of the cooling shell, when viewed in the circumferential direction of the roll, such that the cooling gap can be selectively reduced or increased by pivoting the levers.
    Type: Application
    Filed: May 8, 2013
    Publication date: May 21, 2015
    Inventors: Matthias Kipping, Johannes Alken, Ralf Seidel, Torsten Müller
  • Publication number: 20150128677
    Abstract: A cooling device comprises a manifold housing having a generally concave inner edge configured and dimensioned to surround a surface area of a work roll in a rolling mill. The manifold housing is of a modular design having multiple constituent sections that are internally configured to simultaneously apply both a liquid coolant and a pressurized gas to the surface area of the work roll.
    Type: Application
    Filed: November 13, 2013
    Publication date: May 14, 2015
    Applicant: SIEMENS INDUSTRY, INC.
    Inventor: Raymond P. Dauphinais
  • Publication number: 20150099141
    Abstract: The present invention discloses a double cold reduction strip for shadow mask and a process for producing the same, comprising the following procedures: converter steelmaking?continuous billet casting?hot rolling?pickling and cold rolling?continuous annealing?double cold reduction?finishing and oiling. The weight percentages of essential elements of the shadow mask strip are: C: ?0.001%, Mn: 0.10˜0.40%, Al: 0.02˜0.06%, Si: ?0.025%, P: ?0.015%, S: ?0.01%, O: ?0.004%, with remainders composed of Fe and inevitable impurities.
    Type: Application
    Filed: May 17, 2013
    Publication date: April 9, 2015
    Inventors: Shoumin Wu, Xiujun Li
  • Publication number: 20150078955
    Abstract: A hot-rolled austenitic iron/carbon/manganese steel sheet is provided. The strength of which is greater than 900 MPa, the product (strength (in MPa)×elongation at fracture (in %)) of which is greater than 45000 and the chemical composition of which includes, the contents being expressed by weight 0.5%?C?0.7%, 17%?Mn?24%, Si?3%, Al?0.050%, S?0.030%, P?0.080% and N?0.1%. A remainder of the composition includes iron and inevitable impurities resulting from the smelting. A recrystallized fraction of the structure of the steel is greater than 75%, a surface fraction of precipitated carbides of the steel is less than 1.5% and a mean grain size of the steel is less than 18 microns. A reinforcing element is also provided.
    Type: Application
    Filed: November 25, 2014
    Publication date: March 19, 2015
    Inventors: Mohamed BOUZEKRI, Michel FARAL, Colin SCOTT
  • Patent number: 8978436
    Abstract: For controlling the flatness of the strip during the rolling of aluminum strip or foil, the system consists of a full width bank of cryogenic roll cooling devices acting on the roll(s) and a full width bank of roll heating devices also acting the roll(s). Both or either of the cooling and heating banks are divided into individually controllable zones. A process automation system controls the action of the cooling and heating banks via feedback from a strip shape meter and/or a predictive process model, in order, by thermal growth/contraction, to create the best roll profile for rolling flat strip.
    Type: Grant
    Filed: November 23, 2009
    Date of Patent: March 17, 2015
    Assignee: Siemens PLC
    Inventors: Alan Douglas McRae, Paul Ronald Osborne, Peter Derrick Smith
  • Patent number: 8978437
    Abstract: An apparatus and a method provided for spraying a coolant to a work piece include a coolant feed line, at least one delivery nozzle for delivering the coolant, and shielding means which surround at least part of said delivery nozzle. The shielding means are arranged with the work piece to form an essentially closed space, and said shielding means includes exhausting means for exhausting gas from the essentially closed space, and means for keeping the outside of the shielding means at a temperature above the dew point.
    Type: Grant
    Filed: February 16, 2012
    Date of Patent: March 17, 2015
    Assignees: Linde Aktiengesellschaft, Siemens PLC
    Inventors: Akin Malas, Brian King, Laszlo Szeman, Peter D. Smith, Paul Bowcher, Mike Clark, Peter Christoforou
  • Patent number: 8966951
    Abstract: A spraying method and device for a plant for rolling a strip, the plant having at least one rolling stand. The device includes: a pair of working rolls between which the strip runs; a plane perpendicular to the running direction of the strip; at least one pair of supporting rolls for the working rolls; two pairs of bearing rolls, each of the pairs having the rolls thereof substantially symmetrically arranged on either side of the working rolls in a plane substantially parallel to the strip so as to transfer, to the working rolls, a force for maintaining the working rolls in a predetermined position relative to the supporting roll; a support for the bearing rolls in the form of two rows including a plurality of bearing rollers mounted side by side; one or more nozzle systems for spraying at least a portion of the strip and at least a portion of the rolls.
    Type: Grant
    Filed: February 2, 2009
    Date of Patent: March 3, 2015
    Assignee: Siemens VAI Metals Technologies SAS
    Inventors: Vincent Cronier, Bernard Rossigneux
  • Publication number: 20150023834
    Abstract: A hot-rolled steel sheet including, in terms of % by mass, 0.030% to 0.120% of C, 1.20% or less of Si, 1.00% to 3.00% of Mn, 0.01% to 0.70% of Al, 0.05% to 0.20% of Ti, 0.01% to 0.10% of Nb, 0.020% or less of P, 0.010% or less of S, and 0.005% or less of N, and a balance consisting of Fe and impurities, in which 0.106?(C %-Ti %*12/48-Nb %*12/93)>0.012 is satisfied; a pole density of {112}(110) at a position of ¼ plate thickness is 5.7 or less; an aspect ratio (long axis/short axis) of prior austenite grains is 5.3 or less; a density of (Ti, Nb)C precipitates having a size of 20 nm or less is 109 pieces/mm3 or more; a yield ratio YR, which is the ratio of a tensile strength to a yield stress, is 0.80 or more; and a tensile strength is 590 MPa or more.
    Type: Application
    Filed: January 8, 2013
    Publication date: January 22, 2015
    Applicant: NIPPON STEEL & SUMITOMO METAL CORPORATION
    Inventors: Eisaku Sakurada, Kunio Hayashi, Koichi Sato, Shunji Hiwatashi
  • Publication number: 20150020564
    Abstract: The invention is directed to a device for straightening a stream of a cooling medium for cooling a roll or a metal strip. This device comprise a hollow body, extending over at least part of the width of the roll or the metal strip, and a tube, arranged in the hollow body and extending in the direction of the width of the roll or the metal strip, wherein the hollow body is divided in the direction of the width of the roll or the metal strip into a number of chambers, and the tube comprises openings for introducing cooling medium into the chambers of the hollow body, and the chambers respectively comprise an opening for the flowing out of cooling medium from the hollow body.
    Type: Application
    Filed: January 31, 2013
    Publication date: January 22, 2015
    Applicant: SMS Siemag AG
    Inventors: Matthias Kipping, Johannes Alken, Ralf Seidel
  • Patent number: 8935945
    Abstract: A certain embodiment includes a predictive temperature calculator (101a) for dividing a steel sheet (14) to be heated and rolled in a hot rolling mill (20) into elements shaped annular for each space cutting width from an outer periphery to a center in a section thereof, and changing a time increment width in accordance with boundary conditions, for use of a difference method to calculate a predictive temperature for each of the divided elements, and a controller (101b) for operating on bases of predictive temperatures calculated by the predictive temperature calculator (101a), to determine control amounts for the hot rolling mill (20) to perform heating and rolling the steel sheet (14).
    Type: Grant
    Filed: November 19, 2008
    Date of Patent: January 20, 2015
    Assignee: Toshiba Mitsubishi-Electic Industrial Systems Corporation
    Inventor: Naoki Shimoda
  • Publication number: 20150013845
    Abstract: A hot strip for producing an electric steel sheet has the following alloy composition in weight %: C: 0.001 to 0.08 Al: 4.8 to 20 Si: 0.05 to 10 B: up to 0.1 Zr: up to 0.1 Cr: 0.1 to 4, remainder iron and melting related impurities.
    Type: Application
    Filed: January 30, 2013
    Publication date: January 15, 2015
    Inventors: Zacharias Georgeou, Alexander Redenius
  • Publication number: 20150013405
    Abstract: The invention relates to a method for cooling a roll (1), in particular a working roll (1) of a hot-rolling system, comprising the steps of feeding coolant (3) by means of a nozzle (5) into a gap (7) between at least a portion of the roll surface and a cooling shell (9, 11) that can be placed against the portion of the roll surface, and adjusting the gap height (h) between the cooling shell (9, 11) and the roll surface. According to the invention, the adjustment of the gap height (h) comprises either measuring the pressure (pact) of the fed coolant (3) or measuring the volumetric flow rate (Vact) of the fed coolant (3). The invention further relates to a corresponding device (10) for cooling a roll (1).
    Type: Application
    Filed: November 29, 2012
    Publication date: January 15, 2015
    Inventors: Matthias Kipping, Ralf Seidel, Johannes Alken
  • Patent number: 8931321
    Abstract: A hot rolled steel sheet cooling apparatus includes a gradual cooling header 2 including a rod-like cooling water nozzle 3 for gradual cooling and a rapid cooling header 4 including a rod-like cooling water nozzle 5 for rapid cooling such that the headers constitute a cooling unit 9. The cooling unit 9 includes an elevating unit 7 capable of moving upward and downward in unison with the cooling unit. In cooling the upper surface of a hot rolled steel sheet (hot rolled steel strip or steel plate), uniform and stable cooling is achieved while both of high cooling rate and low cooling rate are ensured.
    Type: Grant
    Filed: March 25, 2010
    Date of Patent: January 13, 2015
    Assignee: JFE Steel Corporation
    Inventors: Satoshi Ueoka, Hirokazu Sugihara, Takashi Kuroki, Nobuo Nishiura, Tsutomu Sugiyama
  • Publication number: 20140373589
    Abstract: A roll forming assembly for forming a transverse strut from a tube is provided. The roll forming assembly includes a heater, such as an induction heater, for heating a tube to a predetermined annealing temperature. Next, the tube is fed to a roll former, which includes a plurality of forming wheels to shape the tube into a transverse strut. Servo motors are operably coupled to the forming wheels for adjusting the positions of the forming wheels in a radial direction during the roll forming process to give the transverse strut a variable profile along its length. After the roll forming process is completed, the transverse strut is quenched so that its base material is given a predetermined microstructure.
    Type: Application
    Filed: February 1, 2013
    Publication date: December 25, 2014
    Inventor: John Richard Potocki
  • Publication number: 20140366602
    Abstract: A method for manufacturing thin strip continuously cast 700 Mpa grade high strength weather-resistant steel, the method comprising the following steps: 1) casting a 1-5 mm thick cast strip in a double roller continuous casting machine, the cast strip comprising the following chemical compositions by weight percent: C 0.03-0.1%, Si?0.4%, Mn 0.75-2.0%, P 0.07-0.22%, S?0.01%, N?0.012%, and Cu 0.25-0.8%, further comprising more than one of Nb, V, Ti and Mo: Nb 0.01-0.1%, V 0.01-0.1%, Ti 0.01-0.1%, and Mo 0.1-0.5%, and the balance being Fe and unavoidable impurities; 2) cooling the cast strip at a rate greater than 20° C./s; 3) hot rolling the cast strip under a temperature of 1050-1250° C. at a reduction rate of 20-50% and a deformation rate greater than 20 s-1; then conducting austenite online recrystallization, the thickness of the hot rolled strip being 0.5-3.0 mm; 4) cooling at a rate of 10-80° C./s; and 5) rolling up under a temperature of 500-650° C.
    Type: Application
    Filed: February 18, 2013
    Publication date: December 18, 2014
    Applicant: Baoshan Iron & Steel Co., Ltd.
    Inventors: Yuan Fang, Xiufang Wang, Yan Yu, Jianchun Wu, Feng Zhang, Wei He
  • Publication number: 20140356220
    Abstract: There are provided a wear resistant austenitic steel having superior machinability and toughness in weld heat affected zones and a method for producing the austenitic steel. The austenitic steel includes, by weight %, manganese (Mn): 15% to 25%, carbon (C): 0.8% to 1.8%, copper (Cu) satisfying 0.7C-0.56(%)?Cu?5%, and the balance of iron (Fe) and inevitable impurities, wherein the weld heat affected zones have a Charpy impact value of 100 J or greater at ?40° C. The toughness of the austenitic steel is not decreased in weld heat affected zones because the formation of carbides during welding is suppressed, and the machinability of the austenitic steel is improved so that a cutting process may be easily performed on the austenitic steel. The corrosion resistance of the austenitic steel is improved so that the austenitic steel may be used for an extended period of time in corrosive environments.
    Type: Application
    Filed: December 27, 2012
    Publication date: December 4, 2014
    Inventors: Soon-Gi Lee, Jong-Kyo Choi, Hee-Goon Noh, Hyun-Kwan Cho, In-Shik Suh, Hak-Cheol Lee, In-Gyu Park, Hong-Ju Lee
  • Publication number: 20140352383
    Abstract: A plant for the production and packaging of bars and steel profiles, comprising a rolling station (2) of rods and profiles (1) of indefinite length, a cooling station (3), a scrap separation station (4), a diverter device (5), a cutting shears (6), intended to cut said bars and profiles (1) in bar portions (1a, 1b) having a fixed length (LH), and a speed changing device (7), able to move the bar portions (1a, 1b) at a speed rate such that they can be placed within respective grooves or housing (18) provided on the outer surface of at least one cylinder or rotating drum (8a, 8b); each cylinder or rotating drum (8a, 8b) is associated with a speed changing device (7), so that the housing (18) receive bar portions (1a, 1b) at different speeds, depending on the fact that said housings (18) belong to one first (8a) or to at least second rotating cylinder (8b), in order to avoid overlap of the bar portions (1a, 1b) when the same are discharged onto the cooling plate (13).
    Type: Application
    Filed: January 3, 2013
    Publication date: December 4, 2014
    Applicant: SMS MEERS S,P. A,.
    Inventor: Federico Castellani
  • Patent number: 8881568
    Abstract: Cooling equipment for a hot rolled steel plate which is arranged on a hot rolling line of a steel plate includes an upper header which supplies cooling water to an upper surface of the hot rolled steel plate; upper cooling water jetting nozzles suspended from the upper header for jetting rod-like water flow; and an upper dividing wall arranged between the hot rolled steel plate and the upper header, wherein a plurality of upper water-supply inlets which allow insertion of lower end portions of the upper cooling water jetting nozzles thereinto, and a plurality of upper drain outlets which drain cooling water supplied to upper surface of the hot rolled steel plate on dividing wall are formed in the upper dividing wall.
    Type: Grant
    Filed: July 15, 2009
    Date of Patent: November 11, 2014
    Assignee: JFE Steel Corporation
    Inventors: Naoki Nakata, Akio Fujibayashi, Hiroyuki Fukuda, Kenji Hirata, Takayuki Furumai, Yukio Fujii, Motoji Terasaki
  • Publication number: 20140301888
    Abstract: This H-beam steel contains, in mass %, C, Si, Mn, Al, Ti, N, O, Nb, and B. The H-beam steel has composition in which the amount of Nb and the amount of B satisfy, in mass %, 0.070?Nb+125B?0.155, and has a metal structure in which, in a microstructure, an area fraction of bainite is not less than 70%, a total of an area fraction of pearlite and an area fraction of cementite is not more than 15%, and the remainder is at least one of ferrite and island martensite. The effective crystalline-grain size of the bainite is not more than 40 ?m, and the thickness of a flange falls in a range of 12 to 40 mm.
    Type: Application
    Filed: December 12, 2012
    Publication date: October 9, 2014
    Inventors: Kazutoshi Ichikawa, Teruyuki Wakatsuki, Noriaki Onodera, Kohichi Yamamoto
  • Publication number: 20140290325
    Abstract: The present invention relates to a stripper (11) for a work roll of a rolling stand, in particular a hot rolling stand, wherein the stripper tip (11) has a stripper tip (5) that makes a contact with the work roll (1), and a first screening element (8) for screening a rolled material (10) from cooling water of the rolling stand, wherein there is provided a second screening element (6) for screening the first screening element (8) from being thermally loaded by the rolled material (10).
    Type: Application
    Filed: September 3, 2012
    Publication date: October 2, 2014
    Applicant: SMS SIEMAG AG
    Inventors: Stephan Fischer, Andreas Loehr
  • Publication number: 20140260483
    Abstract: A rolling mill apparatus and methods of hot rolling with targeted cooling. In one aspect, a mill having multiple roller stacks includes a cooling system that directs the bulk coolant flow to a heat exchanger having first and second heat exchangers in parallel. The first heat exchanger is adapted to cool the heated coolant to a first temperature for use in a first coolant stream discharged through a first set of nozzles during rolling, while the second heat exchanger is adapted to cool heated coolant to a lower temperature for use in a second coolant stream at a second temperature lower than the first for discharge through a second set of nozzles downstream to facilitate rolling or coiling of the rolled metal.
    Type: Application
    Filed: March 7, 2014
    Publication date: September 18, 2014
    Applicant: Novelis Inc.
    Inventors: Krzysztof Ryszard Januszkiewicz, Timothy Francis Stanistreet
  • Publication number: 20140250963
    Abstract: Systems and methods for improving the flatness of a rolled sheet or strip by the application of differential cooling. A cooling agent can be selectively applied along the width of the strip. More cooling can be applied to the edges of the strip, where tension is greatest, to increase tension at the edges. The strip can be allowed to lengthen at these edges, which can improve flatness. In some embodiments, a closed loop flatness control system is used to measure the flatness of a strip and automatically adjust the differential cooling based on the measurement.
    Type: Application
    Filed: March 5, 2014
    Publication date: September 11, 2014
    Applicant: NOVELIS INC.
    Inventors: PAUL DAVID NELSON, DAVID ANTHONY GAENSBAUER, ANDREW JAMES HOBBIS
  • Publication number: 20140230511
    Abstract: A flat rolling stock of metal passes through roll stands of a finishing train, and a cooling section, in succession. Initial values which characterize the energy content of rolling stock points are determined, at the latest, when said rolling stock points enters into the finishing train. The rolling stock is tracked as it passes through the finishing train and cooling section. The initial values, trackings, and energy content influences are used to determine expected values for the energy content of the rolling stock. The energy content expected for a predetermined location, which lies between the first roll stand and the first cooling device of the cooling section is ascertained and used to determine a target energy content progression, from the predetermined location until the rolling stock passes out of the cooling section. The cooling devices are controlled based on the target energy content progression.
    Type: Application
    Filed: June 6, 2012
    Publication date: August 21, 2014
    Applicant: Siemens Aktiengesellschaft
    Inventor: Klaus Weinzierl
  • Publication number: 20140216124
    Abstract: A method for producing a motor vehicle axle component includes the method steps of providing a metal strip made of a hardenable steel material, hot rolling the metal strip and subsequent cold rolling with more than 4% rolling reduction degree, annealing at 600 to 800° C., in particular at 650 to 750° C. for a time period between 10 and 20 hours, in particular 13 to 17 hours, cutting the heat treated metal strip to cut sheet metals, forming the metal cut into a motor vehicle axle component, austenizing and quenching the motor vehicle axle component, wherein the motor vehicle axle component has at least in a surface region a grain size characteristic value according to ASTM-E 112 of greater than 9.
    Type: Application
    Filed: February 4, 2014
    Publication date: August 7, 2014
    Applicant: Benteler Automobiltechnik GmbH
    Inventors: ANDREAS FREHN, RALF ILSKENS, DOMINIK HOWEKENMEIER, JEFFREY M. HATT
  • Publication number: 20140202224
    Abstract: A control device for a rolling plant, which is capable of reducing the pouring amount of cooling water by pouring cooling water at timing of high cooling efficiency when a material being rolled is cooled, and thereby being capable of saving the energy consumption. The control device includes a plurality of rolling stands that are arranged in tandem on a rolling line to roll the material being rolled of a metallic material conveyed on the rolling line, and inter-stand cooling systems that are provided between the plurality of rolling stands to pour cooling water onto the conveyed material being rolled. The inter-stand cooling systems are configured so that the pouring amount of cooling water poured from the inter-stand cooling system positioned on the upstream side on the rolling line is larger, and the pouring amount of cooling water poured from the inter-stand cooling system positioned on the downstream side is smaller.
    Type: Application
    Filed: August 30, 2011
    Publication date: July 24, 2014
    Applicant: TOSHIBA MITSUBISHI-ELECTRIC INDUSTRIAL SYSTEMS CORPORATION
    Inventors: Hiroyuki Imanari, Kei Kubota
  • Publication number: 20140190232
    Abstract: A strip processing device includes a strip processing cartridge and is intended for a rolling mill, and relates to a method for removing the strip processing cartridge from the strip processing device. The strip processing cartridge is mounted on a bearing region on one or more rockers on a frame. The bearing region is open for insertion or removal of the strip processing cartridge sideways and/or upwards out of the frame. A fixing mechanism fixes the strip processing cartridge on the bearing region.
    Type: Application
    Filed: May 24, 2012
    Publication date: July 10, 2014
    Inventors: Klaus Frauenhuber, Friedrich Moser
  • Publication number: 20140137622
    Abstract: A roll forming method includes: performing a cross-section forming process to causing a steel strip, to pass through a forming roll die so that a cross-sectional shape of the steel strip is formed into a predetermined cross-sectional shape; performing a heating process of heating the steel strip to a first temperature that is equal to or higher than an austenitizing temperature; performing a preliminary cooling process of cooling the steel strip to a second temperature lower than the austenitizing temperature and equal to or higher than a martensite transformation point; performing a cross-section correcting process of causing the steel strip to pass through a correction roll die and correcting the cross-sectional shape of the steel strip, and performing a main cooling process of cooling the steel strip having passed through the correction roll die to a third temperature lower than the martensite transformation point.
    Type: Application
    Filed: November 19, 2013
    Publication date: May 22, 2014
    Applicants: Hisada Co., Ltd., Aisin Seiki Kabushiki Kaisha
    Inventors: Takashi NUNOME, Koji YOSHIDA, Masashi SAEKI, Masahiro HASHIGUCHI
  • Patent number: 8713981
    Abstract: The invention provides equipment for supplying lubricant for a rolling roll of a rolling mill comprising a plurality of spray nozzles for spraying a lubricant and a gas in a particulate or atomized state to the rolling roll, a lubricant feed device for feeding the lubricant to the spray nozzles, and a gas feed device for feeding the gas to the nozzles. The amount of lubricant supplied from side spray nozzles is larger than the lubricant feed rate from the center spray nozzle, and the amount of lubricant supplied from the spray nozzles between these side spray nozzles and center spray nozzle is not more than the amount of lubricant from the side spray nozzles and not less than the lubricant from the center spray nozzle. Thus uneven wear and roughness is reduced in the axial direction of the rolling roll.
    Type: Grant
    Filed: April 6, 2011
    Date of Patent: May 6, 2014
    Assignee: Nippon Steel & Sumitomo Metal Corporation
    Inventors: Tsuyoshi Inoue, Yasuyuki Muramatsu
  • Publication number: 20140102604
    Abstract: A high strength mild steel alloy is provided. In addition, a process for making the high strength steel alloy is also provided. The process includes providing a mild steel alloy with a chemical composition in weight percent within a range of 0.12-0.25 carbon, 0.30-1.70 manganese, 0.50 max silicon, 0.10 max chromium, 0.01 max niobium, 0.035 max titanium, 0.01 vanadium, 0.10 max molybdenum, 0.10 max nickel, 0.015 max sulfur, 0.025 max phosphorus, 0.012 max nitrogen, 0.003 max boron, and 0.015-0.065 aluminum. Hot rolled steel strip with a thickness of less than 10 millimeters is cold rolled to produce a cold rolled steel sheet that has a thickness that is less than 50% of the hot rolled steel strip thickness which is subsequently recovery annealed to provide sheet material having a yield strength greater than 550 megapascals (MPa) and a percent elongation to failure greater than 3.5%.
    Type: Application
    Filed: July 29, 2013
    Publication date: April 17, 2014
    Applicant: THYSSENKRUPP STEEL USA, LLC
    Inventors: Chris John Paul Samuel, Stanley Wayne Bevans, Bertram Wilhelm Ehrhardt, Roger Dale Boggs