By Means (other Than A Tool) Modifying Temperature Of Work Patents (Class 72/202)
  • Patent number: 10875064
    Abstract: A rolling mill (1) which is suitable for performing hot stalling rolling includes: a housing (2); a first roller (9) mountable to the housing (2); a second roller (10) mountable to the housing (2), wherein the position of the second roller (10) relative to the housing (2) is adjustable, thereby adjusting the width of a roll gap (17) between the first roller (9) and the second roller (10), and wherein the roll gap (17) is configured to deform a workpiece (18) when the workpiece (18) is passed therethrough. The rolling mill provides the advantage of optimizing the rolling process.
    Type: Grant
    Filed: July 7, 2015
    Date of Patent: December 29, 2020
    Assignee: Baoshan Iron & Steel Co., Ltd.
    Inventors: Zhengyi Jiang, Xiawei Cheng, Jingwei Zhao, Bob de Jong, Laizhu Jiang, Suzhen Luo, Jianguo Peng, Ming Luo, Li Ma
  • Patent number: 10288045
    Abstract: A system for repairing dents in a wind turbine tower section may generally include a dent repair tool having a tool hub and a plurality of arms configured to extend radially outwardly from the tool hub towards an inner surface of the tower section. The tool may also include a linear actuator configured to linearly actuate a plunger of the actuator arm relative to the tool hub such that the plunger applies a radially outward force against the inner surface of the tower section at or adjacent to a location of a dent formed in the tower section. In addition, the system may include a load sensor configured to provide an indication of a load associated with the radially outward force applied against the inner surface of the tower section by the plunger and a controller configured to monitor the load based on signals received from the load sensor.
    Type: Grant
    Filed: December 21, 2015
    Date of Patent: May 14, 2019
    Assignee: General Electric Company
    Inventors: Suneel Basavaraj Karesangannavar, Biju Nanukuttan, Narasimhamurthy Raju Nadampalli, Chickballapur Venkatakrishnappa Raghunandan, Vijaykumar Muppayya Hiremath, Manjunath Basavanneppa Sampagavi
  • Patent number: 9821369
    Abstract: Rolling method for the production of flat products with low productivity, which includes a continuous casting step at a speed between 3.5 m/min and 6 m/min of a thin slab with a thickness between 25 and 50 mm. It also includes a roughing step to reduce the thickness in at least one roughing stand to a value between 6 mm and 40 mm, and suitable for winding, a rapid heating step by means of induction in order to at least restore the temperature lost in the segment downstream of casting and in the roughing step, a winding/unwinding step in a winding/unwinding device with two mandrels. The method also includes a rolling step in a rolling unit that consists of a single reversing stand of the Steckel type to roll the product unwound by the winding/unwinding device.
    Type: Grant
    Filed: February 2, 2012
    Date of Patent: November 21, 2017
    Assignee: DANIELI & C. OFFICINE MECCANICHE SPA
    Inventors: Gianpietro Benedetti, Paolo Bobig
  • Patent number: 9751123
    Abstract: The present invention provides an automatic integral forming method for a double-curvature plate of a ship, comprising: a) constructing a loading system for integral forming; b) establishing relationship between basic forming data and processing data of the plate according to a requirement for a forming process; c) making prototyping software according to the relationship between the basic data and the processing data, installing the prototyping software on the control device, starting the prototyping software to load the plate so that the plate is plastically deformed in double curvature. The present invention features easy operation, high intelligence, high precision and wide application range, and thus is especially applicable for automatic forming of large-curvature plates such as saddle-shaped plates, sail-shaped plates, twisted plates, plates combining shapes thereof and so on.
    Type: Grant
    Filed: December 29, 2014
    Date of Patent: September 5, 2017
    Assignee: Huazhong University of Science and Technology
    Inventors: Yao Zhao, Hua Yuan, Guoyuan Tang, Hongbao Dong, Changcheng Hu, Jun Yan
  • Patent number: 9586250
    Abstract: Method for coiling and on-line inspection of a continuously-rolled metal strip, involving continuous coiling on at least one mandrel of a coiling station, preferably of carousel type, wherein: the strip is cut by a shears situated before the coiling station, advances over a certain length on an insertion table so as to at least partially cover this table and is then cut a second time by the shears in order to obtain a specimen; —the coiling performed on the mandrel is terminated and the coil is discharged from the coiling station; at the same time, the insertion table bearing the specimen is moved parallel to the rolling-coiling line until it lies in an inspection line comprising an inspection table; —the specimen is inspected on the inspection table so that faults can be detected; —once the specimen has left the insertion table, the latter is placed back in the rolling-coiling line.
    Type: Grant
    Filed: January 17, 2013
    Date of Patent: March 7, 2017
    Assignee: Cockerill Maintenance & Ingénierie S.A.
    Inventors: Emilie Fockedey, Andreas Köppe
  • Publication number: 20150101383
    Abstract: In cold-rolling a steel sheet coil, when a tail end portion of a steel sheet coil (7) is wound around a tension reel (3) prior to second-pass rolling after the completion of first-pass rolling, the tail end portion is heated to a temperature within a range of not lower than 50° C. nor higher 350° C. with a heater disposed between a rolling stand (1) and the coil tail end-side tension reel (3).
    Type: Application
    Filed: December 19, 2014
    Publication date: April 16, 2015
    Applicant: NIPPON STEEL & SUMITOMO METAL CORPORATION
    Inventors: Hiroyuki Mimura, Takao Mukai, Kazuhiro Miyamoto
  • Patent number: 8943868
    Abstract: In cold-rolling a steel sheet coil, when a tail end portion of a steel sheet coil (7) is wound around a tension reel (3) prior to second-pass rolling after the completion of first-pass rolling, the tail end portion is heated to a temperature within a range of not lower than 50° C. nor higher 350° C. with a heater disposed between a rolling stand (1) and the coil tail end-side tension reel (3).
    Type: Grant
    Filed: February 10, 2009
    Date of Patent: February 3, 2015
    Assignee: Nippon Steel & Sumitomo Metal Corporation
    Inventors: Hiroyuki Mimura, Takao Mukai, Kazuhiro Miyamoto
  • 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: 20140294662
    Abstract: The present invention has the ultimate purpose of obtaining cutlery having marked characteristics such as high hardness and high toughness, and provides an intermediate material, an annealed material, and a cold-rolled steel strip for stainless steel for cutlery, and a method for manufacturing them to achieve the purpose. Provided is an intermediate material for stainless steel for cutlery, the intermediate material being a material after hot rolling but before annealing, having a composition, in terms of % by mass, of from 0.46 to 0.72% C, from 0.15 to 0.55% Si, from 0.45 to 1.00% Mn, from 12.5 to 13.9% Cr, from 0 to 1.5% Mo, from 0 to 0.
    Type: Application
    Filed: September 14, 2012
    Publication date: October 2, 2014
    Applicant: HITACHI METALS, LTD.
    Inventors: Tomonori Ueno, Goh Yoshiyama, Ichiro Kishigami
  • Publication number: 20140250966
    Abstract: A ferrous alloy is provided for coining The ferrous alloy includes a composition of: 4.00-10.80 wt % of chromium (Cr), 8.00-25.00 wt % of nickel (Ni), 3.00-6.00 wt % of copper (Cu), and a balance of iron (Fe) and incidental impurities.
    Type: Application
    Filed: March 11, 2013
    Publication date: September 11, 2014
    Applicant: CRS Holdings Inc.
    Inventor: Christopher F. Pilliod
  • Publication number: 20140245806
    Abstract: A method of producing a seamless metal pipe, which can suppress the occurrence of lamination defects, is provided. A method of producing a seamless metal pipe according to an embodiment of the present invention includes the steps of: heating a high alloy containing, by mass %, Cr: 20 to 30% and Ni: more than 22% and not more than 60% in a first heating furnace (S2); piercing-rolling the high alloy heated in the first heating furnace with a first piercing machine to produce a hollow shell (S3); heating the hollow shell in a second heating furnace (S4); and elongation-rolling the hollow shell heated in the second heating furnace with the first piercing machine or a second piercing machine which is different from the first piercing machine (S5).
    Type: Application
    Filed: October 24, 2012
    Publication date: September 4, 2014
    Applicant: Nippon Steel & Sumitomo Metal Corporation
    Inventors: Kouji Yamane, Tomio Yamakawa, Kazuhiro Shimoda
  • Publication number: 20140202379
    Abstract: A crucible for growing crystals, the crucible being formed from Molybdenum and Rhenium. A crucible for growing crystals, the crucible being formed from a metal selected from Group V of the Periodic Table of the Elements. A crucible for growing crystals, the crucible comprising a body and a layer formed on at least a portion of the body, the layer being formed out of Molybdenum.
    Type: Application
    Filed: February 21, 2014
    Publication date: July 24, 2014
    Inventor: Matthew Fonte
  • 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
  • Patent number: 8676371
    Abstract: A rolling train for rolling a strip has a number of rolling stands and a coiler. The rolling stands have work and backing rolls. Data of the strip are fed to a control device of the rolling train which determines individual pass reductions for the rolling stands based on the data. It controls the main rolling stands and the coiler such that the strip is rolled in the main rolling stands according to the individual pass reductions and then coiled up. It determines the individual pass reductions such that they are zero and controls the rolling stand arranged directly upstream of the coiler such that—with respect to this main rolling stand—the tension in the strip on the outlet side is less than on the inlet side, but the strip runs through this rolling stand without undergoing any forming, at least on one side.
    Type: Grant
    Filed: July 1, 2008
    Date of Patent: March 18, 2014
    Assignee: Siemens Aktiengesellschaft
    Inventor: Berthold Botta
  • Patent number: 8646301
    Abstract: A method for manufacturing a high strength hot rolled steel sheet includes heating a slab to a temperature in the range of 1150 to 1300° C.; hot rolling the slab with a finishing rolling temperature being in the range of 800 to 1000° C.; cooling the steel sheet at a mean cooling rate of 30° C./s or higher to a cooling termination temperature in the range of 525 to 625° C.; suspending cooling for a time period in the range of 3 to 10 seconds; cooling the steel sheet in such a manner that cooling of the steel sheet is nucleate boiling; and coiling the steel sheet at a temperature in the range of 400 to 550° C.
    Type: Grant
    Filed: August 20, 2008
    Date of Patent: February 11, 2014
    Assignee: JFE Steel Corporation
    Inventors: Takeshi Yokota, Kazuhiro Seto, Satoshi Ueoka, Nobuo Nishiura, Yoichi Tominaga
  • Patent number: 8635895
    Abstract: In a method for cooling a hot strip wound to a hot strip bundle, a device for cooling a hot strip bundle, a control and/or regulating device, and a metal strip, the hot strip bundle (1) is twisted (100) and cooled by contact of the lateral surface (5) thereof with at least one element (3, 7). By twisting the hot strip bundle (1) about the axis of symmetry (S) thereof, a method and a device can be provided by which homogenous strip properties may be obtained for a cooling hot strip bundle in a compact manner.
    Type: Grant
    Filed: May 15, 2009
    Date of Patent: January 28, 2014
    Assignee: Siemens Aktiengesellschaft
    Inventor: Hans-Joachim Felkl
  • 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: 20130263634
    Abstract: The invention relates to a rolling mill for producing metal strips, preferably steel for tubes and/or thin strip, in which the temperature control can be influenced between the finish stands Fi and Fi+1 using a rapid heating device (induction heater), characterized in that the distance between the stands Fi and Fi+1, between which a rapid heating device is arranged, is 5 to 25 m, and in addition to an induction heater, a roller flattening unit (for example, roller leveler 14), and/or shears 8, and/or a driving roller pair 12, and/or a descaling sprayer 15 are arranged as additional units between the two stands. The roll stand Fi and/or regions in front of the roll stand Fi further comprise actuators for influencing the strip warping and/or strip ski-up/-down at the strip head.
    Type: Application
    Filed: December 14, 2011
    Publication date: October 10, 2013
    Applicant: SMS SIEMAG AKTIENGESELLSCHAFT
    Inventors: Juergen Seidel, Christoph Klein
  • Publication number: 20130255341
    Abstract: A method for heating a metal slab being transported in a longitudinal direction (L) and having a cross-direction (T) through an industrial furnace in which the metal slab is heated and transported on a rail device from the industrial furnace for subsequent processing, includes impinging a flame from at least one direct flame impingement (DFI) burner to contact a first portion of a first surface of the metal slab in at least one location corresponding to a second position on an under side surface of the metal slab which during transporting of the metal slab through the industrial furnace constitutes a contact point between the under side surface of the metal slab and the rail device, and counteracting a temperature gradient in the metal slab arising from local cooling of the metal slab upon contact with the rail device by heating the first portion with the DFI burner.
    Type: Application
    Filed: March 18, 2013
    Publication date: October 3, 2013
    Inventors: Tomas EKMAN, Rudiger EICHLER
  • Patent number: 8511126
    Abstract: The invention relates to a cooling device (100) for cooling a metal strip (200) after a forming in a cold rolling stand (200) having at least one nozzle (112) for spraying a cooling medium (400) onto the surface of the metal strip (200). In order to make such known cooling device more effective and efficient, it is proposed according to the invention to provide a plate (500), which in an operating position is arranged parallel to the surface of the metal strip (200) in the run-out of the cold rolling stand (300,) and to arrange the nozzle in the operation position in such a manner that the cooling medium is sprayed at an acute spray angle ? into a cavity between the surface of the metal strip and the opposing plate, with a spray direction (R) opposite to the running direction (L) of the metal strip.
    Type: Grant
    Filed: June 12, 2008
    Date of Patent: August 20, 2013
    Assignee: SMS Siemag Aktiengesellschaft
    Inventors: Dietrich Mathweis, Hartmut Pawelski, Hans-Peter Richter, Friedhelm Gieseler, Heiko Zetzsche, Stefan Tammert
  • Patent number: 8479550
    Abstract: A method for the production of a hot-rolled steel strip from a steel melt in a continuous manufacturing process: continuously casting a steel strand in a continuous casting mold of a continuous casting plant, roll-forming the case steel strand in a first group of roll stands into a pre-rolled hot strip, roll-forming the pre-rolled hot strip in a second group of roll stands into a hot-rolled steel strip, setting the hot strip to a rolling temperature between the first and second groups, and winding or dividing the hot-rolled steel strip; further: descaling the hot strip before temperature setting, holding the hot strip in a protective gas atmosphere during temperature setting. A combined casting and rolling plant for the method is disclosed.
    Type: Grant
    Filed: November 3, 2006
    Date of Patent: July 9, 2013
    Assignee: Siemens Vai Metals Technologies GmbH
    Inventors: Gerald Eckerstorfer, Gerald Hohenbichler, Josef Maierl
  • 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
  • Publication number: 20130112321
    Abstract: Embodiments herein relate processes for bulk solidifying amorphous metal alloys by rapid capacitor discharge.
    Type: Application
    Filed: October 15, 2012
    Publication date: May 9, 2013
    Inventors: Joseph C. Poole, Christopher D. Prest
  • Patent number: 8375760
    Abstract: A method of making wire has the steps of rolling out a wire in a mill having a finishing stand from which the wire exits at a predetermined and varying travel speed VD, pulling the wire through a cooling/equalizing stretch downstream in a travel direction from the finishing stand by means of a cooler drive at a downstream end of the finishing stretch such that the wire exits the cooler drive substantially at the travel speed VD, passing the wire through a looping stretch downstream of the cooler drive to a looper drive, operating the looper drive at such a speed that the wire forms a loop between the cooler drive and the looper drive and exits the looper drive at a looper speed VT normally different from the travel speed VD, and forming the wire into turns and depositing the turns as a coil downstream of the looper drive.
    Type: Grant
    Filed: July 15, 2008
    Date of Patent: February 19, 2013
    Assignee: SMS MEER GmbH
    Inventor: Peter Haak
  • Patent number: 8322179
    Abstract: In a reel furnace having a strip reeling device, the strip reeling device comprising a reel shaft, a reel drum supported on the reel shaft and at least one stirrup clamp, the reel shaft passing through a furnace wall delimiting the inner space of the reel furnace and being supported rotatably in supporting bearings outside the reel furnace, the reel drum and the at least one stirrup clamp being positioned with respect to one another by means of a connection element, and a gap for receiving a strip head being set between the reel drum and the at least one stirrup clamp. The useful life of the reel drum is appreciably increased and a strip thickness-dependent setting of the entry gap for the hot-rolled strip is ensured when the reel drum is designed as a closed body and the connection element is designed as an actuating device for fixing a specific gap width between the reel drum and the stirrup clamp and for clamping a strip head which has entered the gap.
    Type: Grant
    Filed: October 5, 2006
    Date of Patent: December 4, 2012
    Assignee: Siemens Vai Metals Technologies GmbH
    Inventors: Oliver Grieshofer, Herbert Hinterleitner, Michael Jesche, Thomas Kierner, Friedrich Moser, Wolfgang Peitl, Guenter Thaller, Peter Wimmer
  • Patent number: 8256256
    Abstract: A coiler furnace having a heat-insulated enclosure delimiting a furnace interior, a strip coiling device includes a coiler drum having a slotted receiving opening for the hot-rolled strip in the furnace interior, A controlled rotational drive for a coiler shaft is located outside the furnace interior. An inlet and outlet opening to the enclosure for a hot-rolled strip. A strip guiding device between a roller table and the coiler drum. In order to avoid any winding errors, a feeding shield extends through the enclosure of the coiler furnace and is coupled to a displacement drive arranged outside the furnace interior. The displacement drive can be displaced between an insertion position and a withdrawal position of the shield. The feeding shield, in the insertion position, interacts with the strip guiding device to form a feed funnel, mounted upstream the slotted receiving opening on the coiler drum for the hot-rolled strip together.
    Type: Grant
    Filed: September 6, 2007
    Date of Patent: September 4, 2012
    Assignee: Siemens Vai Metals Technologies GmbH
    Inventors: Micheal Jesche, Wolfgang Peitl
  • Publication number: 20120137745
    Abstract: The present invention relates to a system and method for rolling a seamless tube. The plant comprises a main rolling mill with adjustable rolls for mandrel-rolling a semi-finished tube. The plant also comprises a fixed-roll extracting/reducing mill positioned downstream of the main rolling mill. The extracting/reducing mill is designed to extract the semi-finished tube from the mandrel and reduce its diameter to a predetermined value close to that desired for the finished tube. Finally, the plant comprises a adjustable-roll sizing mill. The sizing mill is positioned downstream of the extracting/reducing mill. This sizing mill is designed to adjust the radial position of the rolls and define the diameter of the outgoing tube.
    Type: Application
    Filed: December 16, 2011
    Publication date: June 7, 2012
    Applicant: SMS Innse SPA
    Inventors: Paolo Marin, Vincenzo Palma, Marco Ghisolfi, Guido Emilio Zanella, Jacopo Grassino, Alberto Vittorio Maria Bregante
  • Publication number: 20120073345
    Abstract: In a rolling mill train (2; 30; 56) for processing rolling stock (4, 32), at least three rolling stands (10) are directly adjacent in the rolling direction and are driven by electric motors (20) having superconducting windings. It is thereby possible to keep the distances between the rolling stands smaller than with conventional electric drives, thus reducing energy losses during the rolling process. A combined casting and rolling station (40), which is equipped with such an electric motor (20) in the rolling stands, is configured and/or operated efficiently in terms of the required heating power.
    Type: Application
    Filed: May 31, 2010
    Publication date: March 29, 2012
    Inventors: Michael Diez, Norbert Moritz, Günther Winter
  • Patent number: 8047039
    Abstract: A process for stainless-steel pipe production which comprises piercing rolling a raw material stainless steel containing, by mass, Cr: 10-30%, to give a hollow shell, elongating rolling the hollow shell using a mandrel bar, together with a graphite-free lubricant, to give a finishing rolling blank pipe and heating the blank pipe in a reheating furnace and subjecting the same to finishing rolling by sizing rolling to produce a hot-finished pipe, and then subjecting this pipe as a mother pipe to cold working to produce a stainless-steel pipe. In the reheating furnace, the finishing rolling blank pipe is heated to 1000° C. or more and subjected to heating in which an oxidizing gas is blown into the pipe inside, whereby a stainless-steel pipe which is inhibited from forming a carburized layer in the pipe inner surface can be produced. When the finishing rolling by sizing rolling to give a cold working mother pipe is carried out by stretch reducer rolling at 860-1050° C.
    Type: Grant
    Filed: October 8, 2008
    Date of Patent: November 1, 2011
    Assignee: Sumitomo Metal Industries, Ltd.
    Inventors: Yasuyoshi Hidaka, Satoshi Matsumoto, Toshihide Ono, Kouji Nakaike, Sumio Iida, Hiroshi Nogami
  • Publication number: 20110232349
    Abstract: A method of forming an article from an ??? titanium including, in weight percentages, from about 2.9 to about 5.0 aluminum, from about 2.0 to about 3.0 vanadium, from about 0.4 to about 2.0 iron, from about 0.2 to about 0.3 oxygen, from about 0.005 to about 0.3 carbon, from about 0.001 to about 0.02 nitrogen, and less than about 0.5 of other elements. The method comprises cold working the ??? titanium alloy.
    Type: Application
    Filed: May 7, 2007
    Publication date: September 29, 2011
    Inventors: John J. Hebda, Randall W. Hickman, Ronald A. Graham
  • Publication number: 20110209515
    Abstract: The invention relates to a hot-rolling mill for cooling a leader or band (4) of a metal strand in a working roll (6, 7), in which a coolant is sprayed on the leader or the band (4), is characterized in that the leader or band (4) is shielded from contact by the coolant in the area of the band edges. Shielding devices (14, 15) are used for said purpose. A shielding device (20) can also be disposed in the area of a loop lifter, or in a cooler device between the pretreater and the final line.
    Type: Application
    Filed: September 21, 2009
    Publication date: September 1, 2011
    Applicant: SMS SIEMAG AKTIENGESELLSCHAFT
    Inventors: Jürgen Seidel, Uwe Baumgärtel, Andreas Wied
  • Patent number: 7954351
    Abstract: A metal strip is stretched as it is moved longitudinally generally continuously between an upstream traction-roll set and a downstream traction-roll set. The roll sets are differentially driven—with the downstream set moving at a slightly higher peripheral speed than the upstream set—so as to apply to the strip in a region between the sets a tension generally equal to a stretch limit of the strip. The strip is locally heated or cooled at an upstream location in the region between the roll sets so as to set in the strip in the region a temperature distribution that is nonhomogeneous transversely across the strip at least immediately downstream of the upstream location.
    Type: Grant
    Filed: February 5, 2008
    Date of Patent: June 7, 2011
    Assignee: BWG Bergwerk-und Walzwerk-Maschinenbau GmbH
    Inventor: Andreas Noé
  • Patent number: 7938949
    Abstract: The invention relates to a method for producing a hardened profiled structural part from a hardenable steel alloy with cathodic corrosion protection. The method includes applying a coating to a sheet made of a hardenable steel alloy, wherein the coating comprises zinc, and the coating further comprises one or several elements with affinity to oxygen in a total amount of 0.1 weight-% to 15 weight-% in relation to the total coating. After applying the coating, the coated sheet steel is roller-profiled in a profiling device, so that the sheet tape is formed into a roller-formed profiled strand. Thereafter, the coated sheet steel is brought, at least in parts and with the admission of atmospheric oxygen, to a temperature required for hardening and is heated to a structural change required for hardening. A skin made of an oxide of the element(s) with affinity to oxygen is formed on the surface of the coating.
    Type: Grant
    Filed: November 1, 2010
    Date of Patent: May 10, 2011
    Assignee: voestalpine Stahl GmbH
    Inventors: Werner Brandstatter, Herbert Eibensteiner, Martin Fleischanderl, Josef Faderl, Gerald Landl, Anna Elisabeth Raab, Siegfried Kolnberger
  • Publication number: 20100326161
    Abstract: In cold-rolling a steel sheet coil, when a tail end portion of a steel sheet coil (7) is wound around a tension reel (3) prior to second-pass rolling after the completion of first-pass rolling, the tail end portion is heated to a temperature within a range of not lower than 50° C. nor higher 350° C. with a heater disposed between a rolling stand (1) and the coil tail end-side tension reel (3).
    Type: Application
    Filed: February 10, 2009
    Publication date: December 30, 2010
    Inventors: Hiroyuki Mimura, Takao Mukai, Kazuhiro Miyamoto
  • Patent number: 7832242
    Abstract: The invention relates to a method for producing a hardened profiled structural part from a hardenable steel alloy with cathodic corrosion protection. The method includes applying a coating to a sheet made of a hardenable steel alloy, wherein the coating comprises zinc, and the coating further comprises one or several elements with affinity to oxygen in a total amount of 0.1 weight-% to 15 weight-% in relation to the total coating. After applying the coating, the coated sheet steel is roller-profiled in a profiling device. Thereafter, the coated sheet steel is heated to a structural change required for hardening. A skin made of an oxide of the element(s) with affinity to oxygen is formed on the surface of the coating. After sufficient heating the sheet is cooled, wherein the rate of cooling is set in such a way that hardening of the sheet alloy is achieved.
    Type: Grant
    Filed: June 9, 2004
    Date of Patent: November 16, 2010
    Assignee: voestalpine Stahl GmbH
    Inventors: Werner Brandstätter, Herbert Eibensteiner, Martin Fleischanderl, Josef Faderl, Gerald Landl, Anna Elisabeth Raab, Siegfried Kolnberger
  • Publication number: 20100132424
    Abstract: The invention relates to a cooling device (100) for cooling a metal strip (200) after a forming in a cold rolling stand (200) having at least one nozzle (112) for spraying a cooling medium (400) onto the surface of the metal strip (200). In order to make such known cooling device more effective and efficient, it is proposed according to the invention to provide a plate (500), which in an operating position is arranged parallel to the surface of the metal strip (200) in the run-out of the cold rolling stand (300,) and to arrange the nozzle in the operation position in such a manner that the cooling medium is sprayed at an acute spray angle ? into a cavity between the surface of the metal strip and the opposing plate, with a spray direction (R) opposite to the running direction (L) of the metal strip.
    Type: Application
    Filed: June 12, 2008
    Publication date: June 3, 2010
    Inventors: Dietrich Mathweis, Hartmut Pawelski, Hans-Peter Richter, Friedhelm Gieseler, Heiko Zetzsche, Stefan Tammert
  • Publication number: 20100101293
    Abstract: The invention relates to a coiling furnace (1), especially a coiling furnace (1) for Steckel rolling mills, wherein a hot-rolled strip (2) is coiled and uncoiled and optionally heated on a furnace drum (3) in the furnace interior (4) in a reversing manner. Said coiling furnace comprises guide tables (6) mounted on the mobile furnace door (5) of the coiling furnace (1) for inserting and/or guiding the heat-rolled strip (2), the furnace door (5) and the coiling furnace (1) being separate units. The furnace door (5) is arranged on a part of a roller rack (6) below the coiling furnace (1) and the furnace door (5) is subdivided into at least two elements (8, 9) that swing in relation to one another, both door elements (8, 9) being interconnected via a door bearing (10) and being configured to be pivoted.
    Type: Application
    Filed: July 20, 2007
    Publication date: April 29, 2010
    Inventor: Karl Hoen
  • Publication number: 20100047617
    Abstract: Steel sheet having a composition of ingredients containing substantially, by mass %, C: 0.005 to 0.200%, Si: 2.50% or less, Mn: 0.10 to 3.00%, N: 0.0100% or less, Nb: 0.005 to 0.100%, and Ti: 0.002 to 0.150% and satisfying the relationship of Ti-48/14×N?0.0005, having a sum of the X-ray random intensity ratios of the {100}<001> orientation and the {110}<001> orientation of a ? sheet thickness part of 5 or less, having a sum of the maximum value of the X-ray random intensity ratios of the {110}<111> to {110}<112> orientation group and the X-ray random intensity ratios of the {211}<111> orientation of 5 or more, and having a high rolling direction Young's modulus measured by the static tension method and a method of production of the same are provided.
    Type: Application
    Filed: November 7, 2007
    Publication date: February 25, 2010
    Inventors: Natsuko Sugiura, Naoki Maruyama, Manabu Takahashi, Yohji Nakamura, Koji Hanya
  • Publication number: 20100037976
    Abstract: There are provided: a seamless steel pipe formed from a cylindrical steel material billet through a hot isostatic extrusion step, wherein a depth of a contiguous flaw formed on an inner periphery surface and an outer periphery surface of the steel pipe is 50 ?m or less; a hollow spring obtained by forming a hollow body in a shape of a coil or a bar or a bar with curved part from the seamless steel pipe made of spring steel and applying a surface treatment to the hollow body so that the hollow body has compressive residual stress; and a method for producing seamless steel pipe including: a billet molding step; a first heating step; a hot isostatic extrusion step; a second heating step; an extension step; a third heating step; and a pickling step.
    Type: Application
    Filed: March 14, 2007
    Publication date: February 18, 2010
    Applicants: Shinko Products Co., Ltd., NHK Spring Co., Ltd.
    Inventors: Kotaro Toyotake, Koji Iwaya, Tomoyuki Minami, Noritoshi Takamura
  • Publication number: 20100024505
    Abstract: A cooling device and a cooling method for a hot strip allow uniform and stable cooling of the strip at a high cooling rate when supplying the coolant to the upper surface of the hot strip. The cooling device includes an upper header unit 21 for supplying a rod-like flow to the upper surface of the strip 10. The upper header unit 21 is formed of the first upper header group including plural first upper headers 21a arranged in a conveying direction and a second upper header group including plural second upper headers 21b arranged in the conveying direction. The cooling device is provided with an ON-OFF mechanism 30 to allow each of the upper headers 21a and 21b of the first and the second upper header groups to independently execute the ON-OFF control (start/end injection control) of an injection (feeding) of the rod-like flow.
    Type: Application
    Filed: January 15, 2008
    Publication date: February 4, 2010
    Applicant: JFE STEEL CORPORATION
    Inventors: Satoshi Ueoka, Naoki Nakata, Takashi Kuroki, Nobuo Nishiura
  • Publication number: 20090071221
    Abstract: A method for surface treating a mandrel bar used for hot rolling of high-alloy seamless steel pipe is provided. The method includes heat treating the mandrel bar to develop a scale, and after heat treatment, rolling ordinary steel comprising 8% or less of chromium for at least 50 passes.
    Type: Application
    Filed: September 24, 2008
    Publication date: March 19, 2009
    Applicant: SUMITOMO METAL INDUSTRIES, LTD.
    Inventors: Sumio Iida, Yasuyoshi Hidaka, Mitsuru Yoshizawa, Koji Nakaike
  • Publication number: 20080264133
    Abstract: The invention relates to an installation for treating continuously cast bars (1) or continuously cast billets (2), which can be heated inside a furnace (7) to a deformation temperature before shearing off to form slugs (6) and the subsequent pressing inside a press (4). To this end, a number of shaft elements (8) for axially transporting continuously cast bars (1) or continuously cast billets (2) extend through the furnace (7). These shaft elements (8) are arranged in a fixed manner and mounted outside the furnace (7).
    Type: Application
    Filed: April 22, 2005
    Publication date: October 30, 2008
    Inventors: Christoph Keller, Yildirim Karamahmut
  • Publication number: 20080236235
    Abstract: The heat-treatment apparatus for steel plate has a plurality of transfer rolls for transferring steel plate in the horizontal direction and at least one induction-heating unit for heating the steel plate. The induction-heating unit is positioned between specified adjacent transfer rolls. At least an induction-heating unit located at the most upstream side among the induction-heating units is provided with at least one pressing roll at outlet thereof to press the steel plate from above. At least the pressing roll located at the most upstream side among the pressing rolls is positioned above and facing the transfer roll located at outlet of the induction-heating unit. Owing to the heat-treatment apparatus for the steel plate, desired heat treatment can be given to the steel plate even with the induction-heating unit without adversely affecting the travel of the steel plate.
    Type: Application
    Filed: January 19, 2005
    Publication date: October 2, 2008
    Inventors: Yoshimichi Hino, Masatoshi Sugioka, Kiyoshi Nakano, Ikuo Takenami, Eiji Takenouchi, Toshio Matsuoka
  • Publication number: 20080196467
    Abstract: A metal strip is stretched as it is moved longitudinally generally continuously between an upstream traction-roll set and a downstream traction-roll set. The roll sets are differentially driven—with the downstream set moving at a slightly higher peripheral speed than the upstream set—so as to apply to the strip in a region between the sets a tension generally equal to a stretch limit of the strip. The strip is locally heated or cooled at an upstream location in the region between the roll sets so as to set in the strip in the region a temperature distribution that is nonhomogeneous transversely across the strip at least immediately downstream of the upstream location.
    Type: Application
    Filed: February 5, 2008
    Publication date: August 21, 2008
    Inventor: Andreas Noe
  • Patent number: 7357011
    Abstract: The invention concerns a method for producing metal strip (1) in an installation (2), in which a metal strand, especially a thin slab, is brought to a desired temperature and/or is maintained at a desired temperature in a furnace (3, 3a, 3b) and is subjected to a rolling process in a rolling train (4) downstream of the furnace (3, 3a, 3b) in the direction of conveyance (R) of the metal strand (1). In accordance with the invention, to prevent the formation of scale deposits in the downstream region of the furnace, provision is made for the metal strand (1) to be subjected to at least one descaling operation during its residence time in the region (5) of the furnace (3, 3a, 3b). In addition, the invention concerns an installation for producing metal strip.
    Type: Grant
    Filed: July 8, 2005
    Date of Patent: April 15, 2008
    Assignee: SMS Demag AG
    Inventors: Karl Rittner, Sitki Altuntop, Frank Benfer, Carsten Lippold
  • Patent number: 7340932
    Abstract: A rolling-mill cooling unit has a cooling-unit conveyor transporting fanned-out loops of wire in a transport direction toward a coiler spaced downstream from the cooling-unit conveyor and serving to organize the fanned-out loops of wire into coils or bundles. A feeder conveyor extending in the direction has an upstream end juxtaposed with the cooling unit and a downstream end juxtaposed with the coiler and is operable to advance the loops of wire from the unit to the coiler. The entire feeder conveyor can be shifted relative to the coiler and to the cooling unit in the direction so as to displace the upstream and downstream ends relative to the cooling unit and coiler.
    Type: Grant
    Filed: August 9, 2006
    Date of Patent: March 11, 2008
    Assignee: SMS Meer GmbH
    Inventors: Jaroslaw Wysocki, Gerhard Herzog, Lutz Kümmel
  • Patent number: 7328598
    Abstract: The invention relates to a device for cooling rolling stock within the cooling stretch of a rolling mil, especially a hat-strip mill, whereby water spray devices are stationarily mounted below the rolling stock between rollers (10) of a roller train (1) and spray bars (3) held on support levers (16) are arranged above the rolling stock. The support levers are held be a tubular, rotationally driven and water-fed articulated tube (15) that extends in parallel to the longitudinal axis of the roller train. The device is further provided with a central water feed tube and an automatic control device with associated on/off valves for switching the cooling water on and off. The aim of the invention is to improve a device of the aforementioned kind in such a manner that the maximum cooling capacity to be obtained is increased while the length of the roller train required therefor is reduced, thereby attaining a compact design and high cooling capacity.
    Type: Grant
    Filed: February 27, 2003
    Date of Patent: February 12, 2008
    Assignee: SMS Demag AG
    Inventors: Ulrich Cramer, Martin Braun
  • Patent number: 7293446
    Abstract: The invention relates to a coil box, which is mounted between a roughing rolling train and a finishing rolling train, for metal pre-strips, in particular steel strips, which are hot wound to form coils and are protected against further cooling in the vicinity of a winding and/or unwinding station (6) by means of heat-shield devices (7) on the front faces (5a; 5b) of the coils. The aim of the invention is to universally configure said coil box. To achieve this, the heat-shield devices (7) are configured from lateral walls (8; 8b) that can be pivoted to rest against the front faces (5a; 5b) of the coils and a pair of opposing heat-shield devices (7) can be aligned in parallel to different coil widths (5c).
    Type: Grant
    Filed: March 25, 2003
    Date of Patent: November 13, 2007
    Assignee: SMS Demag AG
    Inventors: Barbara Ladda-Zunk, Waldemar Michel, Bernhard Ehls, Matthias Beuter
  • Patent number: 7257977
    Abstract: A system and the relevant thermo-electromechanical process with two superimposed devices (A) able to coil and uncoil a pre-strip (a) by reversing their positions, provided with outer (4) and inner (7) burners to respectively equalize and optimize the temperature along the whole pre-strip by means of special algorithms of the control software, suited to also control the speed, acceleration and deceleration, both in the coiling and uncoiling step, of the chuck (6) up to the advanced stop during coiling to let a segment of tail (c) of the pre-strip out of the device (A). A particular structure of the chuck (6)is also described.
    Type: Grant
    Filed: July 8, 2004
    Date of Patent: August 21, 2007
    Inventor: Giovanni Arvedi
  • Patent number: 7159433
    Abstract: The invention relates to a method and a device for cooling and/or lubricating rollers, in particular the working rollers (2, 3) on a rolling stand and a rolled strip (1), rolled between the above rollers and transported onwards, using water in the form of spray jets (4, 5) as cooling medium and oil, oil/water mix, oil/water mix, oil/air/water mix or grease mixtures as lubricant. In order to improve the lubricating and cooling effects, a combined application of super-cooling the strip and roller surfaces and roller lubrication on the input side of the stand is disclosed, in which both media, water and lubricant, are separately fed to the rollers (2, 3) and the rolled strip and applied to the roller surface at different application points. Separate reservoirs for water and lubricant and separate lines to the spraying bar (11) for water and the spraying bar (12) for the lubricant are provided.
    Type: Grant
    Filed: June 25, 2002
    Date of Patent: January 9, 2007
    Assignee: SMS Demag AG
    Inventor: Jürgen Seidel