Sensing Work Or Product (e.g., By X-ray) Patents (Class 72/11.1)
  • Patent number: 11872614
    Abstract: An emulsion flow optimization method suitable for a cold continuous rolling mill that aims to achieve vibration suppression. The method aims to suppress vibrations by an oil film thickness model and a friction coefficient model. An optimum set value of the emulsion flow rate for each rolling stand that aims to achieve vibration suppression is optimized on the basis of an over-lubrication film thickness critical value and an under-lubrication film thickness critical value that are proposed. The method greatly reduces the incidence of rolling mill vibration defects, improves production efficiency and product quality, treats rolling mill vibration defects, and improves the surface quality and rolling process stability of a finished strip of a cold continuous rolling mill.
    Type: Grant
    Filed: July 24, 2019
    Date of Patent: January 16, 2024
    Assignee: BAOSHAN IRON & STEEL CO., LTD.
    Inventors: Kangjian Wang, Peilei Qu
  • Patent number: 11788687
    Abstract: A method of manufacturing a pressure accumulator, using an AE signal for the pressure accumulator, includes: a first estimation step of estimating with an AE sensor provided at the pressure accumulator, a range of stress levels at each of which a damage AE signal that is generated from the pressure accumulator because of damage of material of the pressure accumulator is in a predetermined state; and a first design step of designing the pressure accumulator such that a minimum thickness of the pressure accumulator is determined based on the stress level range estimated in the first estimation step.
    Type: Grant
    Filed: June 21, 2019
    Date of Patent: October 17, 2023
    Assignee: JFE Steel Corporation
    Inventors: Hiroshi Okano, Akihide Nagao, Nobuyuki Ishikawa, Kazuki Matsubara, Toshio Takano
  • Patent number: 11779978
    Abstract: A chattering detection method for a cold rolling mill, the method including: measuring a vibration of a cold rolling mill; calculating a time waveform of vibration intensity by performing frequency analysis on a time waveform of the measured vibration of the cold rolling mill for a predetermined period equal to or shorter than a time in which a periodic vibration continues without converging; and detecting a chattering sign vibration of the cold rolling mill based on a number of points having vibration intensity values that exceed a predetermined threshold, the points being included in the calculated time waveform of the vibration intensity.
    Type: Grant
    Filed: September 5, 2019
    Date of Patent: October 10, 2023
    Assignee: JFE STEEL CORPORATION
    Inventors: Yu Nagai, Koichi Nohara
  • Patent number: 10661323
    Abstract: Forming roll units included in an apparatus for manufacturing a roll-formed component each include a roll pair. The roll pair includes a receiving roll part and a first bending roll part that face each other. A plate member passing area is formed below the first bending roll part, the plate member passing area allowing a roll formed member excluding its side edge portions to pass through. The roll pair is configured to make, during bending, sliding movement in a width direction of the roll formed member and rotational movement about a normal direction to the roll formed member as a rotational center.
    Type: Grant
    Filed: December 27, 2016
    Date of Patent: May 26, 2020
    Assignee: KAWASAKI JUKOGYO KABUSHIKI KAISHA
    Inventors: Hideki Okada, Yasuhiro Kasumi
  • Patent number: 10456818
    Abstract: A plurality of flat metal items to be rolled (3) are fed to a plurality of rolling stands (1, 2) of a rolling installation, one after the other over a feed path (4). The items (3) are rolled by the rolling stands (1, 2) past which they are fed. In the rolling stands (1, 2), the flat item to be rolled (3) is first rough-rolled in at least one roughing pass with a wedge-type roll gap adjustment (ds) and then finish-rolled in finishing passes. After the finish-rolling of the flat item, a thickness taper (dd) that is present in the respective finish-rolled flat item is recorded by measuring instruments. The thickness taper (dd) is compared with a target taper (dZ). On the basis of a deviation of the thickness taper (dd) from the target taper (dZ) and the wedge-type roll gap adjustment (ds), a new wedge-type roll gap adjustment (ds) is determined for the at least one roughing pass.
    Type: Grant
    Filed: January 21, 2015
    Date of Patent: October 29, 2019
    Assignee: PRIMETALS TECHNOLOGIES GERMANY GMBH
    Inventors: Matthias Kurz, Uwe Rietbrock
  • Patent number: 9999958
    Abstract: A device and methods are provided for deep rolling. In one embodiment, a deep rolling tool for applying compressive stress with rolling elements includes a fork having a base section and a plurality of fork arms, each fork arm extends outwardly from the base section and the fork arms are separated from one another to form an opening. The deep rolling tool may also include rolling elements, wherein each rolling element is mounted at the distal end of a fork arm, and the rolling elements are configured to apply a compressive stress to articles received by the deep rolling tool.
    Type: Grant
    Filed: February 16, 2017
    Date of Patent: June 19, 2018
    Assignee: UNITED TECHNOLOGIES CORPORATION
    Inventors: Justin R. Hawkes, Eric D. Gray, Raja Kountanya, Gary Paul Zadrozny, Joe J. Liou
  • Patent number: 9842690
    Abstract: The apparatus comprises a first working unit for unwinding a coil of conductor and providing straightened conductor, and a second working unit comprising a bending device arranged to bend the straightened conductor leaving the first working unit and a rotary table on which the bent conductor leaving the bending device is laid, whereby a set of turns is formed to make the superconductive coil. The rotary table is rotatably mounted about a stationary vertical axis. The bending device is mounted so as to be translatable both in a longitudinal direction coinciding with the direction of a longitudinal axis of the straightened conductor that is fed by the first working unit to the bending device and in a transverse direction perpendicular to the longitudinal direction. The first working unit is mounted so as to be translatable, along with the bending device, in the transverse direction only.
    Type: Grant
    Filed: November 19, 2014
    Date of Patent: December 12, 2017
    Assignee: CTE SISTEMI S.r.l.
    Inventor: Marco Dani
  • Patent number: 9669438
    Abstract: [Object] To provide a rolling apparatus that enables an operator to recognize the rolling status such as the behavior of the steel sheet entering the rolling stand and enables a stable rolling process. [Solution] A rolling apparatus 10 includes a plurality of rolling stands 11 each including a pair of rolling mills 12, and an imaging unit 15 provided between adjacent rolling stands 11A and 11B, the imaging unit 15 being configured to image a steel sheet 1 entering a pair of rolling mills 12B of the rolling stand 11B from an upstream side of the rolling stand 11A located on a downstream side in a rolling direction.
    Type: Grant
    Filed: April 23, 2013
    Date of Patent: June 6, 2017
    Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATION
    Inventors: Kensaku Ito, Takeshi Kinomoto, Genji Ono, Ryoh Izumi, Yasuhiro Tateishi, Ryuichi Kano
  • Patent number: 9498856
    Abstract: The present invention proposes a rolling tool device for compression rolling of, in particular, blade elements of a rotor area of a jet engine with a tool carrier to which two pliers-type bodies are rotatably connected, with the pliers-type bodies each being provided with a rolling area. A distance between the rolling areas is variable in dependence of a rotary movement of the pliers-type bodies. A separate spacer device is provided by means of which a minimum distance between the rolling areas can be defined.
    Type: Grant
    Filed: September 13, 2013
    Date of Patent: November 22, 2016
    Assignee: Rolls-Royce Deutschland Ltd & Co KG
    Inventor: Goetz Feldmann
  • Patent number: 9498809
    Abstract: A metallic matrix shaping method is provided. A flatness of a plurality of points of the metallic matrix is measured by a shape test device, and a flatness margin of error H between a reference level and the flatness of the metallic matrix is calibrated using the least square method. A controller determines whether the points of the metallic matrix need to be shaped by comparing the flatness margin of error H and a permissive error range K. The controller calibrates a descending distance P by a mathematical formula of P=M+[(H?K)/D]/N+L. A shaping device shapes the metallic matrix according to the descending distance P and a shaping time. The above steps are repeated until the flatness of the metal is within the permissive error range K.
    Type: Grant
    Filed: October 24, 2014
    Date of Patent: November 22, 2016
    Assignees: FU DING ELECTRICAL TECHNOLOGY (JIASHAN) CO., LTD., HON HAI PRECISION INDUSTRY CO., LTD.
    Inventors: Wei-Zhong Dai, Jie Ni, Hu Wu
  • Publication number: 20150000360
    Abstract: A slit plant comprises a rest bar (14), for regulating the transversal position of an inlet guide to the moulder unit (12), a rolling unit for reducing the billet to a rolled section having two sections, a cutting box (13) for separating the two sections into two separate strands, one or more rolling units for rolling the two strands (1, 2), pairs of speed and/or section measurers (20, 21) downstream of the cutting box (13), a shear (15). The method for controlling the plant provides measuring the rolling speeds V1 and V2 of each of the two strands (1, 2) and/or of the division step respective sections A1 and A2 of the two strands (1, 2) downstream of the cutting box (13) by means of pairs of measurers; detecting the lengths of the two strands (1, 2) and calculating the difference in length thereof, based on which the plant, in a successive feedback step, is activated to decrease the difference in length between the two strands (1, 2).
    Type: Application
    Filed: February 25, 2013
    Publication date: January 1, 2015
    Applicant: Danieli & C. Officine Meccaniche S.P.A.
    Inventor: Daniele Andreatta
  • Patent number: 8919162
    Abstract: A method of rolling a strip is provided. The method includes determining a value representative of the lateral position of the strip along a line transverse to a run direction downstream of each stand and calculating algebraic differences between the lateral positions and a reference position. A value of additional tilt is calculated from the algebraic differences to bring the algebraic differences below a predetermined threshold. Calculating the additional tilt values includes multiplying the algebraic differences by a gain matrix K that is determined by modeling relationships linking the algebraic differences and the tilts of the stand rolls. The additional tilt value is transmitted to each of the stands. The steps are repeated at predetermined time intervals until the strip is no longer gripped in the nip of the last stand of the rolling mill. A device for adjusting the lateral position of a strip is also provided.
    Type: Grant
    Filed: May 27, 2008
    Date of Patent: December 30, 2014
    Assignee: ArcelorMittal France
    Inventors: Christian Moretto, Remi Bonidal, Patrick Szczepanski, Nils Naumann, Jamal Daafouz, Claude Iung, Uwe Koschack
  • Publication number: 20140230508
    Abstract: The invention concerns an anode straightening apparatus (10, 30, 60) for the straightening of an anode (100) typically used in an electrowinning process. In the preferred embodiment the apparatus includes clamps (21, 41, 71) for clamping a busbar (101) of the anode and clamps (22, 42, 71) for clam in a blade of the anode to the apparatus during the course of the straightening process. At least one sensor (29, 52, 85) monitors the curvature of the blade (102) of the anode (100) when the anode is secured to the apparatus by the clamps. The apparatus ((10, 30, 60) includes a movable head (24, 44, 78) housing straightening means for bending the anode in a desired direction in response to feedback received from the sensor. The head is movable in two planes of movement which are transverse to one another.
    Type: Application
    Filed: August 20, 2012
    Publication date: August 21, 2014
    Applicant: ZIMCO GROUP (PROPRIETARY) LIMITED
    Inventors: Charles Rudolph Meyer, David Marian Evans, Marthinus Hendricus Serfontein
  • Publication number: 20140174141
    Abstract: A rolling system, particularly a cold-rolling system for cold-rolling a metal strip (2): having at least one cold-rolling stand (1) an unwinding device (3) upstream of the cold-rolling stand (1), a unit (10) connected between the unwinding device (3) and the cold-rolling stand (1), including at least three rolls (6, 7, 8) each rotationally driven about a rotational axis (6A, 7A, 8A). Each roll (6, 7, 8) can be adjusted individually or together in the direction of the respective rotational axis (6A, 7A, 8A) and in a direction transverse to the rotational axis (6A, 7A, 8A) by a driving and adjusting device (11).
    Type: Application
    Filed: July 26, 2012
    Publication date: June 26, 2014
    Applicant: SIEMENS VAI METALS TECHNOLOGIES GMBH
    Inventors: Günter Karner, Konrad Krimpelstätter
  • Patent number: 8627694
    Abstract: During the bending of sheet metal sections (1, 2) for forming can bodies by means of a bending machine, the sheet metal characteristics of the individual sheets are measured, e.g. the thickness and/or the strength of the sheets. The measured value is used to control the bending machine (4). This permits a substantially constant bending result to be achieved, even with varying sheet metal characteristics.
    Type: Grant
    Filed: April 17, 2008
    Date of Patent: January 14, 2014
    Assignee: Soudronic AG
    Inventor: Peter Schreiber
  • Publication number: 20130319061
    Abstract: The present invention relates to a bending assembly for bending a workpiece. The assembly includes a bending apparatus configured to bend the workpiece and form a curved portion of the workpiece. The curved portion of the workpiece has a longitudinal periphery and a curvature. The assembly includes a camera configured to produce an image of the longitudinal periphery of the curved portion of the workpiece. The assembly includes a processor configured to receive the image of the longitudinal periphery of the curved portion of the workpiece. The processor is configured to identify a plurality of measuring points spaced-apart along the longitudinal periphery of the curved portion of the workpiece. The processor is configured to determine the curvature of the curved portion of the workpiece based on the measuring points.
    Type: Application
    Filed: May 29, 2013
    Publication date: December 5, 2013
    Applicant: Aggressive Tube Bending Inc.
    Inventor: Yuri Tofini
  • Publication number: 20130186156
    Abstract: A method and a lubricant application device for regulating flatness and/or roughness of a metal strip in the outlet of a cold rolling stand by suitable metering of the amount of a lubricant per unit time applied to the metal strip in the inlet of the cold rolling stand. The invention that the applied amount of lubricant is metered in the form of a quantitative distribution over the width of the metal strip per unit time according to a detected control deviation between an actual and a desired flatness distribution over the width of the metal strip in the outlet of the cold rolling stand or a control deviation between an actual and a desired roughness distribution over the width of the metal strip in the outlet of the cold rolling stand or a combination of the two control deviations.
    Type: Application
    Filed: March 8, 2013
    Publication date: July 25, 2013
    Applicant: SMS SIEMAG AKTIENGESELLSCHAFT
    Inventor: SMS SIEMAG AKTIENGESELLSCHAFT
  • Publication number: 20120240651
    Abstract: Apparatus and method of controlling strip geometry in casting strip having a rolling mill. A target thickness profile is calculated as a function of the measured entry thickness profile of the strip while satisfying profile and flatness parameters. A differential strain feedback from longitudinal strain in the strip is calculated by a control system by comparing the exit thickness profile with the target thickness profile, and a control signal is generated to control a device capable of affecting the geometry of the strip processed by the hot rolling mill. A feed-forward control reference and/or sensitivity vector may also be calculated as a function of the target thickness profile, and used in generating the control signal sent to the control device. The control device may be selected from one or more of the group consisting of a bending controller, gap controller and coolant controller.
    Type: Application
    Filed: June 7, 2012
    Publication date: September 27, 2012
    Applicant: NUCOR CORPORATION
    Inventors: Richard BRITANIK, Tino DOMANTI, Terry L. GERBER, Jason A. MUELLER, Glen WALLACE, Harold Bradley REES
  • Patent number: 8215142
    Abstract: An elongation rolling control method is provided which can manufacture a hollow shell of high dimensional accuracy and can suppress rolling problems.
    Type: Grant
    Filed: March 30, 2011
    Date of Patent: July 10, 2012
    Assignee: Sumitomo Metal Industries, Ltd.
    Inventor: Hiroyuki Iwamoto
  • Patent number: 8127580
    Abstract: A method and a device is provided for controlling the overlapping of leveling rollers in a planishing machine comprising two leveling trains each bearing a series of rollers with parallel axes. The method and device are particularly applicable to sheets and strip products of great thickness and high hardness requiring little roller overlap. The method is characterized in that it consists in measuring at least the overall value of the torques transmitted to the planishing rollers by the motors, in determining the actual value of the torques used for planishing the product, in comparing the determined value with the reference value of the torque provided by the presetting model and in acting on the members regulating the roller overlap to maintain the value of the thus determined torque at the reference value.
    Type: Grant
    Filed: November 15, 2006
    Date of Patent: March 6, 2012
    Assignee: Siemens VAI Metals Technologies SAS
    Inventors: Dominique Polatidis, Yves Leclercq
  • Patent number: 8091394
    Abstract: There is provided a foreign pipe or tube determining method capable of accurately determining a foreign pipe or tube. The foreign pipe or tube determining method in accordance with the present invention includes a step for determining the presence of a foreign pipe or tube by comparing the length of each pipe or tube in a size measuring step with the length of each pipe or tube measured in an actual weighing and length measuring step, which is associated with each pipe or tube in the size measuring step, a step for determining the presence of a foreign pipe or tube by comparing the weight of each pipe or tube calculated in a weight calculating step with the weight of each pipe or tube measured in the actual weighing and length measuring step, which is associated with each pipe or tube in a weight calculating step, and a step for determining the presence of a foreign pipe or tube based on the material of each pipe or tube determined in a material determining step.
    Type: Grant
    Filed: November 26, 2008
    Date of Patent: January 10, 2012
    Assignee: Sumitomo Metal Industries, Ltd.
    Inventors: Hajime Osako, Takeshi Maekawa
  • Publication number: 20110308288
    Abstract: For controlling the flatness of the strip during the rolling of aluminium 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: Application
    Filed: November 23, 2009
    Publication date: December 22, 2011
    Inventors: Alan Douglas McRae, Paul Ronald Osborne, Peter Derrick Smith
  • Publication number: 20110162423
    Abstract: A stator structure includes: a stator core (104) having a large number of concave slots (105) and a large number of convex magnetic poles (106) circumferentially alternately arranged; and magnet wires (101) of rectangular cross section in each of which an insulating coating (103) is formed on the outer surface of a metal wire (102), wherein each of the slots (105) is formed so that the distance (W2) between both the side surfaces (109, 109) of the slot (105) gradually decreases from the bottom (107) to a distal opening (108) of the slot (105), each of the magnet wires (101) is wound around the associated magnetic pole (106) and inserted in tiers in the associated slot (105), and the magnet wire (101) is placed in the slot (105) so that the width (W1) thereof continuously or stepwise decreases from the bottom (107) to the distal opening (108) of the slot (105).
    Type: Application
    Filed: March 14, 2011
    Publication date: July 7, 2011
    Applicant: MITSUBISHI CABLE INDUSTRIES, LTD.
    Inventors: Hiroyuki KAMIBAYASHI, Yasunori Kashima, Takafumi Tanabe, Takeshi Ikeda, Yasushi Kawakami
  • Patent number: 7971461
    Abstract: The invention relates to a method for manufacturing a metal strip (1), in which the metal strip (1) is guided over a number of rolls (2, 3, 4, 5) under such a strip stress (S), and is moved in a conveying direction (F), that it is largely flat at least between two rolls (2, 3). In order for it to be possible to inspect the strip in a simple and space-saving way, the invention provides for the inner tensile stresses which act in the metal strip (1) which is largely flat under tensile stress between the at least two rolls (2, 3), to be made optically visible and for the tensile stresses or tensile stress differences which are determined in this way to be utilized during the manufacture of the metal strip (1). Furthermore, the invention relates to an apparatus for manufacturing a metal strip.
    Type: Grant
    Filed: May 19, 2006
    Date of Patent: July 5, 2011
    Assignee: SMS Demag AG
    Inventor: Wolfgang Denker
  • Publication number: 20110138868
    Abstract: A method for leveling parts in a roller leveling machine, which includes an upper and a lower roller frame, and in which upper and lower leveling rollers are each arranged in a separate leveling roller block, at least one of the leveling roller blocks being variable in its position and angle so that the leveling gap can be adjusted, wherein at least one leveling gap setting device is arranged at the infeed side and at the outfeed side of the leveling machine, and an automatic leveling gap control is provided to set the leveling gap. The method includes determining, for each leveling triangle of the roller leveling machine, an offset value based on the thickness, width, and bending moment of the part to be leveled and characteristics of the leveling machine including a max deflection of the roller frame, and readjusting a setting device of the leveling gap as a function of the leveling triangles mapped onto the part to be leveled as it moves through the leveling gap.
    Type: Application
    Filed: July 10, 2009
    Publication date: June 16, 2011
    Applicant: ARKU Maschinenbau GmbH
    Inventors: Horst Braeutigam, Gerald Khim
  • Patent number: 7937978
    Abstract: An elongation rolling control method is provided which can manufacture a hollow shell of high dimensional accuracy and can suppress rolling problems.
    Type: Grant
    Filed: September 28, 2007
    Date of Patent: May 10, 2011
    Assignee: Sumitomo Metal Industries, Ltd.
    Inventor: Hiroyuki Iwamoto
  • Patent number: 7600404
    Abstract: The present invention relates to a surface treatment apparatus and method for inducing compressive residual stress in the surface of a workpiece with dimensional variations. The method comprises the acts of measuring the dimensions of the workpiece during a surface treatment operation and adjusting the surface treatment process parameters to account for the measured dimensions. In one embodiment, the apparatus comprises two surface treatment elements oriented in opposition to one another in a caliper configuration. The surface treatment elements are positioned and impinged against the surface of a workpiece by an actuator controlled by a computer control unit. The depth to which the surface treatment elements are impinged is precisely controlled to achieve the desired magnitude and depth of compressive residual stress. A sensor operatively connected to the apparatus senses and relays the dimensions of the workpiece to a computer control unit that adjusts the operating parameters accordingly.
    Type: Grant
    Filed: April 7, 2006
    Date of Patent: October 13, 2009
    Assignee: Surface Technology Holdings, Ltd.
    Inventor: Paul S. Prevey, III
  • Patent number: 7600406
    Abstract: Apparatus for reducing the diameter, rounding or straightening of pipe or tubing by rolling comprising a plurality of cylindrical rollers arranged in a parallel-cylindrical array through which the pipe or tubing is passed, the rollers being skewed to displace their central contact zones radially inwards bringing them into forceful contact with the external surface of the pipe or tubing, and being rotated to cause the central contact zones to describe helical paths along the external surface of the pipe or tubing. Thereby to progressively apply locally to the whole of the external surface of the pipe or tubing a compressive force in excess of the yield strength of its material, causing the pipe or tubing to adopt a set at a smaller diameter.
    Type: Grant
    Filed: June 1, 2004
    Date of Patent: October 13, 2009
    Assignee: Stainless Tube Mills (Australia) Ltd.
    Inventor: Anthony Kastropil
  • Publication number: 20090235707
    Abstract: Disclosed is a rolling mill comprising a roll stand with working rolls, a roll train located at the feeding end of the roll stand, and a control device. The working rolls form a roll gap. The control device triggers the roll stand such that the working rolls rotate at a certain peripheral speed while triggering the roll train located at the feeding end of the roll stand in such a way that the leading edge of the strip-shaped rolling stock reaches the roll gap at a feeding speed that is greater than the peripheral speed. The control device adjusts the peripheral speed and the feeding speed to each other in such a way that a potential angled position of the leading edge relative to the roll gap is at least reduced as a result of said adjustment.
    Type: Application
    Filed: February 1, 2007
    Publication date: September 24, 2009
    Inventor: Birger Schmidt
  • Publication number: 20080295556
    Abstract: A process produces structures which are superimposed on one another in a metal foil section. The process includes producing a primary structure using a first tool, and transferring the metal foil section to a second tool, the second tool having at least one shaping profiled roller which is responsible for transferring the metal foil section. A secondary structure is produced using the second tool. A spatial position of the primary structure and the secondary structure is determined in at least one subregion of the metal foil section. An incorrect position is detected and an operating parameter of the at least one profiled roller is adapted in dependence on the detected incorrect position. An apparatus is suitable for this process and produces metal foils which are suitable for the production of catalyst support bodies that can be used in exhaust systems of internal combustion engines.
    Type: Application
    Filed: November 13, 2007
    Publication date: December 4, 2008
    Applicant: EMITEC GESELLSCHAFT FUR EMISSIONSTECHNOLOGIE MBH
    Inventors: Jan Hodgson, Gunter Hoster
  • Publication number: 20080196466
    Abstract: An apparatus for leveling thin metal strip moving longitudinally generally in a plane in a travel direction has at least one upstream roll rotatable about an axis and engaging the strip, at least one downstream roll rotatable about an axis and engaging the strip downstream of the upstream roll, and a drive connected to at least one of the rolls for exerting tension on the strip between the rolls. In accordance with the invention pivoting one of the rolls is pivoted about an axis substantially perpendicular to the plane or parallel to the direction so as to vary the tension in the strip across a width of the strip and thereby locally plastically deform the strip to level it.
    Type: Application
    Filed: February 5, 2008
    Publication date: August 21, 2008
    Inventor: Andreas Noe
  • 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
  • Publication number: 20080127696
    Abstract: The invention relates to a method for controlling a rolling process, in which a metal strip is rolled flat by use of at least one roller. It is known from the prior art that the relative position of a neutral point represents a measure of the instantaneous stability of a rolling process. However, traditional methods for calculating the position of the neutral point do not accurately represent the actual properties of metal and therefore have only limited usefulness for predicting the stability of a rolling process. In order to allow better control of a rolling process for rolling a metal strip with regard to the actual behavior of the metal strip, the invention proposes a new method for calculating the relative position of the neutral point, in which in particular the flat yield stress ke and the hydrostatic pressure pNH at the neutral point are incorporated.
    Type: Application
    Filed: November 30, 2006
    Publication date: June 5, 2008
    Inventor: Hartmut Pawelski
  • Patent number: 7076979
    Abstract: In a method and a device for producing curved lengths of spring band steel in order to produce precisely toleranced, dimensionally stable bending radii, the spring band steel (10) pass through a bending unit (20), which is comprised of three support points (23-25) spaced apart from one another, and passes through a reverse bending unit (22), which is disposed after the bending unit (20) in the advancing direction of the spring band steel (10) and is comprised of a fourth support point (32), and in a cutting unit (21), the curved and recurved lengths of spring band steel (11) are cut from the spring band steel (10). The central support point (24) of the bending unit (20) and the fourth support point (32) of the reverse bending unit (22) are embodied so that they can be moved and are controlled in their advancing in relation to the spring band steel (10) by means of a numerical control unit (20) in accordance with predetermined programs (FIG. 1).
    Type: Grant
    Filed: October 22, 2001
    Date of Patent: July 18, 2006
    Assignee: Robert Bosch GmbH
    Inventors: Manfred Wilhelm, Thomas Blum, Julius Mazurkiewicz, Theo Troester
  • Patent number: 7032420
    Abstract: A method for real-time adjustment of a planisher for planishing metal strip. After a planished strip has been cut into a plate, the method includes measuring the plate at the output of the planisher outside a support zone, correcting the measurement so as to eliminate the influence due to self-weight of the plate, and correcting, as the case may be, the clamping of rollers located at the planer output so as to obtain a plate with a controlled curve.
    Type: Grant
    Filed: December 14, 2001
    Date of Patent: April 25, 2006
    Assignee: Usinor
    Inventors: Jacques-Yves Bourgon, Olivier Guillard, Fabrice Tondo, Olivier Madelaine-Dupuich, Pierre Lemoine
  • Patent number: 6948346
    Abstract: The invention relates to a method for specifically adjusting the surface structure of rolling stock (3) during cold rolling in skin pass mills. The aim of the invention is to partially transfer the surface structure of the working roll (2) onto the rolling stock (3). To this end, the change of roughness of the rolling stock (3) in the rolling process of a single- or multiple-stand, preferably two-stand skin pass mill is calculated in an optimization calculation in which the rolling parameters are varied according to the mill capacity using a tribological model that mathematically describes the friction conditions in the roll gap (1). The results obtained are then used to readjust at least a part of the rolling parameters used for calculation.
    Type: Grant
    Filed: February 28, 2002
    Date of Patent: September 27, 2005
    Assignee: SMS Demag AG
    Inventor: Hartmut Pawelski
  • Patent number: 6915673
    Abstract: A worm is formed by rolling to reduce the number of processing steps while ensuring the worm accuracy satisfactorily. A work material is positioned between a first rolling die (100) and a second rolling die (101) by rotation of the rolling dies and a servomotor (76) for feeding the work material. When the lead angle of a worm is large and there is a large difference between the finished diameter and the blank diameter, the lead angle changes during the progress of rolling process, resulting in occurrence of through-feed. A slide plate (55) is freely slidable on a slide (53). Therefore, when through-feed occurs owing to the lead angles of the first and second rolling dies (100) and (101) and the workpiece, the slide plate (55) slides freely, and this is detected with a detecting sensor. The rotation of the first and second rolling dies (100) and (101) is stopped.
    Type: Grant
    Filed: June 20, 2002
    Date of Patent: July 12, 2005
    Assignee: Nissei Co., Ltd.
    Inventors: Toshinaka Shinbutsu, Minoru Yoshizawa, Shuichi Amano, Kenji Ito
  • Publication number: 20040244449
    Abstract: An apparatus and method are provided for reducing the width of a plurality of longitudinal slots or other openings spaced circumferentially around a slotted tubular member. The invention includes a seaming roller positioned to contact the outer surface of the slotted tubular member for transverse movement across the plurality of slots, and adapted to apply a force onto the slotted tubular member so as to reduce the slot width. The width of the plurality of slots is detected and compared to a set value indicative of a desired end slot width and based on this comparison, an adjustor connected to the seaming roller, adjusts the force applied by the seaming roller to the plurality of slots. Each opening is adjusted by the seaming roller to have a profile with a width that throughout the length of the slot profile, varies no more than a given tolerance from the desired end slot width.
    Type: Application
    Filed: April 16, 2004
    Publication date: December 9, 2004
    Applicant: International Roller Technology Inc.
    Inventors: Lawrence Alexander Hruschak, Terry James McLean, Richard Todd Ariss
  • Patent number: 6771363
    Abstract: A method for determining the bending angle of a sheet which has been bent along a bending line, by generating at least one light beam, using these beams to project two points or line segments onto a part of the sheet to be checked which lies on one side of the bending line. The beams form an angle of incidence which is known in advance with the bending line of the sheet. These points or line segments are imaged onto receiving means and the distance between the points or line segments is determined, which have been projected onto the receiving means. The beams lie in two parallel detection planes, the distance between which is known. The bending angle is determined from the distance between the projected points, the known angles of incidence of the beams and the known distance between the detection planes.
    Type: Grant
    Filed: August 21, 2002
    Date of Patent: August 3, 2004
    Assignee: Best Quality B.V.
    Inventor: Max Van Den Berg
  • Patent number: 6708547
    Abstract: There are disclosed a rolling mill capable of keeping a uniform plate of thickness distribution and manufacturing a good-quality plate, and a rolling method. The rolling mill comprises working rolls movable in roll axis directions, profile-measuring means for measuring the profile of each of the working rolls, profile-estimating means for estimating the profile thereof, and a grinder for grinding each of the working rolls. The rolling mill also comprises instructing means for sending a command of grinding to the grinder at a time when the measured profile value or the estimated profile value regarding each of the working rolls reaches a given value.
    Type: Grant
    Filed: March 26, 2002
    Date of Patent: March 23, 2004
    Assignee: Hitachi, Ltd.
    Inventors: Kenjiro Narita, Mitsuo Nihei, Takehiko Saito, Toshiyasu Shinmura, Shinichi Kaga, Takashi Kamoshita
  • Patent number: 6672123
    Abstract: A flange is formed on a workpiece by first mounting the workpiece in an inner holder shiftable along about a main axis and securing the inner holder against rotation about the main axis. A roller is rotated about the main axis adjacent the inner holder. Then the inner holder and workpiece are displaced axially to press the workpiece axially against the roller and deform the workpiece and form a flange thereon. This is done without heating the workpiece, that is in a cold-forming operation.
    Type: Grant
    Filed: January 10, 2002
    Date of Patent: January 6, 2004
    Assignee: SMS Eumuco GmbH
    Inventors: Werner Sczesny, Frank Siewert, Jürgen Bergmann
  • Patent number: 6615634
    Abstract: A plate width adjusting apparatus 1 for adjusting a strip 53 for a predetermined plate width, which is installed on a production line for the strip 53, is provided with bridle rolls 2 and 3. The bridle rolls 2 and 3 give tension in the transfer direction to the strip 53 being transferred on the production line to elongate the strip 53 in the transfer direction, by which the plate width of the strip 53 is adjusted.
    Type: Grant
    Filed: June 8, 2001
    Date of Patent: September 9, 2003
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventors: Tetsuya Shinkai, Kensuke Fujimura, Haruhisa Sugimoto
  • Patent number: 6479992
    Abstract: The present invention provides a leakage flux flaw detecting method in which a ferromagnetic substance such as a steel sheet or coil is magnetized by a plurality of magnetic fields with different intensity and magnetic flux leaking from the ferromagnetic substance having been magnetized is detected by a magnetic sensor, and output signals of the magnetic sensor after the detection of leakage flux are processed so that a signal caused by a flaw in the ferromagnetic substance is highlighted. Since this leakage flux flaw detecting method makes it possible to detect flaws with high accuracy, a scaled or descaled hot rolled steel sheet or coil in which the accurate flaw information such as location, density, size, and the like is known can be provided by applying this method to the manufacturing of hot rolled steel sheet or coil.
    Type: Grant
    Filed: January 7, 2002
    Date of Patent: November 12, 2002
    Assignee: NKK Corporation
    Inventors: Hiriharu Kato, Junichi Yotsuji, Akio Nagamune
  • Patent number: 6463775
    Abstract: The present invention relates to a method for detecting chattering of a cold rolling mill rapidly and accurately, which occurs during cold rolling of a steel strips. The occurrence of the chattering is detected by a plurality of acoustic parameters derived from a sound measured in the vicinity of the cold rolling mill during the rolling. The acoustic parameters are the frequency range characteristic of the occurrence of the chattering, the acoustic intensities in the frequency bands which are n-th harmonics, the peak frequency of the acoustic frequency component distribution, the resonance factor, the peak intensity, and the like. A plurality of parameters may be provided by measuring and calculating the same parameter with different timing.
    Type: Grant
    Filed: December 26, 2000
    Date of Patent: October 15, 2002
    Assignee: Kawasaki Steel Corporation
    Inventors: Toshifumi Kodama, Akira Torao
  • Patent number: 6349581
    Abstract: Rolling stock is transported in a transporting device from a front roll stand to a rear roll stand. Between the roll stands, the rolling stock carries out an oscillation transverse to the transporting direction. At least one characteristic property, amplitude or frequency, of the oscillation is determined quantitatively and, from this determination, a tension or compression, existing in the rolling stock between the roll stands is determined. One of the roll stands is readjusted in such a manner, that a desired tension is built up in the rolling stock between the roll stands.
    Type: Grant
    Filed: June 9, 2000
    Date of Patent: February 26, 2002
    Assignee: SMS Schloemann-Siemag AG
    Inventors: Otmar Palzer, Hubert Müller, Ulrich Svejkovsky
  • Patent number: 6279367
    Abstract: A multiple section bars straightening/cutting system in a bar rolling line comprises a multiple section bars straightening apparatus, an inlet side introduction pinch roller, a multiple traveling section bars cutting apparatus and a rear surface tilting table having an outlet side introduction pinch roller. The multiple traveling section bars cutting apparatus includes a fixed blade and a moving blade each having a plurality of calipers formed in accordance with the cross-sectional shapes of the section bars. The rear tilting table tilts in the direction in which the blades of the multiple traveling section bars cutting apparatus move in synchronism with the movement of the blades.
    Type: Grant
    Filed: September 28, 1999
    Date of Patent: August 28, 2001
    Assignee: NKK Corporation
    Inventors: Akio Mehara, Koji Mizuno, Soichi Aoyama
  • Patent number: 6279363
    Abstract: The present invention relate to a device and to a method for handling a pipe (1) comprising at least one metal tube plastically wound on a drum (2). The invention comprises an adjustable straightening system (5) controlled by at least one series of means (6, 7) for measuring the stresses present in the material of the tube once unwound from the drum. The present invention can be used for floating supports intended for offshore laying of uncoiled rigid tubes or for units referred to as “coiled tubing” used in oil wells for drilling or well servicing.
    Type: Grant
    Filed: March 15, 2000
    Date of Patent: August 28, 2001
    Assignee: Institut Francais du Petrole
    Inventors: Daniel Averbuch, Gilles Perrin
  • Patent number: 6266983
    Abstract: A flaw detecting method and apparatus for continuously testing a strip that is continuously carried through a liquid includes features for reducing air bubble generation in a liquid. The apparatus includes a liquid, carrying rolls for passage of the strip through the liquid, and ultrasonic testing probes arranged in the liquid for testing the strip. A carrying roll in contact with the liquid is fully immersed. Air bubble generation is inhibited to improve the testing reliability by at least one of (a) shielding the liquid dropping from the portion of the strip leaving the liquid, (b) reducing the dropping force of the liquid onto the liquid surface by inclining the strip, (c) installing the fully immersed carrying roll at a depth of at least 5 mm in the liquid, and (d) using a carrying speed of less than about 200 m/min. Upon manufacturing steel strips, testing is carried out in the stage of hot-rolled steel sheet, or, preferably, in pickling equipment.
    Type: Grant
    Filed: November 23, 1999
    Date of Patent: July 31, 2001
    Assignee: Kawasaki Steel Corporation
    Inventors: Hajime Takada, Toshihiro Sasaki, Masato Iri, Makoto Aratani, Hideo Kuguminato, Hidenori Miyake, Masuto Shimizu, Susumu Okada, Yasuo Tomura
  • Patent number: 6230531
    Abstract: The rolling data collecting system according to this invention collects rolling data of a rolled strip to be serially rolled through a tandem rolling mill, using the first rolling data measuring means installed at each roll stand and the second rolling data measuring means installed in the rolling line. The measuring point decision means decides a measuring point on a rolled strip which is used for measuring data by the first and second rolling data measuring means. The tracking means detects that the decided measuring point has reached each roll stand locating from the entry side of the tandem rolling mill and to the delivery side thereof, and the location of the second rolling data measuring means. Every time when the measuring point reaches each roll stand and the second rolling data measuring means, the rolling data collecting means collects the rolling data of the rolled strip or rolled strip measured by the first and second rolling data measuring means.
    Type: Grant
    Filed: December 3, 1999
    Date of Patent: May 15, 2001
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Tomoyuki Tezuka, Noriyasu Okitani