Patents Assigned to Schloemann-Siemag AG
  • Patent number: 6167941
    Abstract: A support structure for an oscillating continuous casting mold has fixed vertical support beams and oscillating frames attached to the fixed support beams by links with rigid intermediate portions connected by leaf spring hinges to the beams and the support frames.
    Type: Grant
    Filed: December 4, 1998
    Date of Patent: January 2, 2001
    Assignee: SMS Schloemann-Siemag AG
    Inventor: Stephan Schallenberg
  • Patent number: 6164110
    Abstract: A method of operating a rolling mill stand of a rolling mill train and including upper and lower rolls having opposite roll edges, with the method including, rolling, in the rolling stand, a first metal strip having a first strip width, thereafter, after a rolling pause, rolling, in the rolling stand, a second metal strip having a second strip width, subjecting the rolls, during the rolling the first and second metal strip, to action of a cooling medium, and interrupting cooling of the rolls, at least in a contact region of the rolls with the second metal strip during rolling of the same, for a time period within the rolling pause between rolling of the first and second strips.
    Type: Grant
    Filed: November 4, 1999
    Date of Patent: December 26, 2000
    Assignee: SMS Schloemann-Siemag AG
    Inventor: Jurgen Seidel
  • Patent number: 6158683
    Abstract: Successive rolled wire rod turns from a substantially horizontal conveyor are collected in an upright coiling chamber and are guided onto the coil on a support plate in this chamber by a plurality of angularly spaced arms swingably mounted outside the chamber and reaching into the chamber through slits in the chamber wall. The arms are displaced by a drive acting on the back portions of the arms, i.e. the portions opposite that engaging the turns.
    Type: Grant
    Filed: March 16, 1999
    Date of Patent: December 12, 2000
    Assignee: SMS Schloemann-Siemag AG
    Inventors: Siegfried David, Karl Keller
  • Patent number: 6149858
    Abstract: A method of and an apparatus for the production of steel utilizing a single vessel for the electric arc smelting of scrap, directly reduced iron or pig iron in solid form, and for the oxygen blowing of the resulting melt through an oxygen lance introduced via a tower-shaped part of the roof. Another part of the roof can pivot to allow charging of the furnace with solids and the tower can be provided with a funnel enabling a molten iron charge to be fed to the furnace.
    Type: Grant
    Filed: June 18, 1999
    Date of Patent: November 21, 2000
    Assignee: SMS Schloemann-Siemag AG
    Inventors: Fritz-Peter Pleschiutschnigg, Wei-Ping Wu
  • Patent number: 6145580
    Abstract: A continuous-casting mold having two broad-side walls carrying the mold-forming plates which are preferably of copper and clamp the narrow side wall members between them. The entire assembly is received in an outer frame which is shape stable and hence rigid so as to take up all forces which arise in adjustment of the plates as clamping forces and as thermal forces from, for example, thermal expansion of the mold members.
    Type: Grant
    Filed: December 4, 1998
    Date of Patent: November 14, 2000
    Assignee: SMS Schloemann-Siemag AG
    Inventors: Thomas Lamberti, Joachim Schwellenbach
  • Patent number: 6128938
    Abstract: A method of rolling rod in which at least first and second strands are jointly rolled in a mill line having at least one final multistrand stand operating at a rolling speed which is variable as a result of predictable rolling events. Downstream of this stand the strands are separated and passed through single-strand mill stands and loops are provided upstream of the first single-strand mill stand in each line. Each loop has a loop length which can vary between a minimum and a maximum value. Before each of the rolling events occur at least one of the loop lengths is changed to an event optimizing value.
    Type: Grant
    Filed: February 22, 1999
    Date of Patent: October 10, 2000
    Assignee: SMS Schloemann-Siemag AG
    Inventors: Uwe Plociennik, Hans-Erich Schneider
  • Patent number: 6119323
    Abstract: Structural shapes are descaled with water or air jets from a distributor beam in the form of a tube bundle extending across the path of the structural shape and rotatable to juxtapose a selected nozzle array with the structural shape. The nozzle arrays on the distributor have different nozzle patterns depending upon spray distribution required for the particular structural shape and upon a change in the rolling pattern, the distributor can be rotated about the distributor axis to bring one or another of its arrays into operation.
    Type: Grant
    Filed: January 21, 1999
    Date of Patent: September 19, 2000
    Assignee: SMS Schloemann-Siemag AG
    Inventor: Lothar Thone
  • Patent number: 6082924
    Abstract: A clamping joint between a universal joint spindle and a stub or wobbler of a rolling mill roll is formed by providing wedge members between the juxtaposed surfaces of the coupling box and roll stub and by bracing the wedge members by springs in the coupling head bracing the wedge members against a shoulder of the roll stub.
    Type: Grant
    Filed: March 13, 1998
    Date of Patent: July 4, 2000
    Assignee: SMS Schloemann-Siemag AG
    Inventors: Karl-Heinz Seidl, Hans-Joachim Marburger
  • Patent number: 6062371
    Abstract: An apparatus for braking the travel on oncoming rolled products and depositing the rolled products on a cooling bed or other collector as a support frame extending in the direction of travel of the rolled workpieces and an array of profile braked members which can be U-shaped and open toward brake surfaces on the support frame. The U-shaped brake members are pressed against the workpiece to clamp it against the braking surface. The brake members can be swung pendulum fashion so that angled legs beneath the workpieces can be swung away to allow them to drop on the cooling bed or other collector.
    Type: Grant
    Filed: March 11, 1998
    Date of Patent: May 16, 2000
    Assignee: SMS Schloemann-Siemag AG
    Inventors: Hans-Peter Drugh, Erich Grossmann
  • Patent number: 5992001
    Abstract: A continuously cast strand is cut into elongated billets having ends and the billets are run through a rolling stand. after cutting the strand into billets and before rolling the billets one of the billets is engaged in the rolling stand and a trailing end of the one billet and a leading end of another billet are enclosed in a mold with the ends longitudinally spaced. This space between the ends is filled with molten metal in contact with the ends of the billets and the molten metal is hardened to interconnect the billet ends. Then the mold is removed from around the billet ends. The molten metal is of substantially the same composition as the billets. Furthermore the one billet is advanced in a travel direction by means of the stand and the mold and the other billet are advanced synchronously with the one billet after enclosing the billet ends in the mold. The mold is removed from the billet ends before the hardened metal between the billet ends enters the rolling stand.
    Type: Grant
    Filed: December 12, 1997
    Date of Patent: November 30, 1999
    Assignee: SMS Schloemann-Siemag AG
    Inventors: Wolfgang Roloff, Hans-Georg Hartung, Friedrich Wilhelm Hollmann, Paul-Josef Mauk
  • Patent number: 5987954
    Abstract: A rolling apparatus has a frame and a first eccentric journal sleeve mounted on the frame, defining a first axis, and having axially inner and outer ends. A first shaft journaled in the sleeve has respective inner and outer ends at the first-sleeve inner and outer ends. The first-shaft outer end projects axially from the frame and carries a workpiece-deforming first roller. A rocker is displaceable transversely of the axis on the frame and carries a second eccentric journal sleeve defining a second axis generally parallel to the first axis and having axially inner and outer ends. A second shaft journaled in the second sleeve has respective inner and outer ends at the second-sleeve inner and outer ends. The second-shaft outer end also projects axially from the frame and carries a workpiece deforming second roller forming with the first roller a workpiece-receiving nip.
    Type: Grant
    Filed: December 5, 1997
    Date of Patent: November 23, 1999
    Assignee: SMS Schloemann-Siemag AG
    Inventors: Albert Hauck, Rudiger Grimmel
  • Patent number: 5983481
    Abstract: A steel bar is made by first producing a continuously cast forgeable steel strand of generally square cross section with flat beveled corners at a temperature above a transformation temperature. This strand is then cut into billets which are passed through a succession of pairs of rollers and compressed with the rollers with a pressure sufficient to compact a core of the billets without substantially lengthening the billets.
    Type: Grant
    Filed: December 23, 1997
    Date of Patent: November 16, 1999
    Assignee: SMS Schloemann-Siemag AG
    Inventor: Hubert Muller
  • Patent number: 5927634
    Abstract: A method of coiling steel rod arriving continuously comprises the steps of rotating about an upright axis a coiling basket defining a space centered on the axis and defined by an annular inner wall, an annular outer wall, and a floor between the walls, and feeding the rod into the space to form a coil resting on the floor and formed by a multiplicity of turns. The coil is, once formed, raised out of the space and simultaneously axially compacted and is also stabilized. More particularly the coil is stabilized by spraying an outer surface of the coil with a coolant while raising the coil out of the space. Normally the coil is rotated about the axis as the coil outer surface is being sprayed.
    Type: Grant
    Filed: November 26, 1997
    Date of Patent: July 27, 1999
    Assignee: SMS Schloemann-Siemag AG
    Inventors: Gunter Grenz, Werner Kohlstedde, Meinert Meyer
  • Patent number: 5907967
    Abstract: In the continuous rolling of wire from a heated billet in a continuous wire-rod mill in which the rolled product passes through the rolling stand of a roughing line and an intermediate line, the finish rolling is effected in at least one finish rolling line having double rolling stands with respective pairs of horizontal and vertical rolls. The double stands or units are spaced apart and along a portion of the spacing between them, rolling stretches are provided.
    Type: Grant
    Filed: November 26, 1997
    Date of Patent: June 1, 1999
    Assignee: SMS Schloemann-Siemag AG
    Inventors: Georg Kleinefeldt, Klaus Hoffmann, Uwe Plociennik
  • Patent number: 5904893
    Abstract: A plate cooler is provided for metallurgical furnaces lined with a refractory lining, comprising cast copper or a low-alloy copper alloy with coolant ducts arranged in its interior. The coolant ducts are prefabricated, comprising copper pipe sockets, copper pipelines and copper pipe bends which are cast integrally in the plate cooler. The wall of the plate cooler facing the interior of the furnace has webs and grooves or a flat surface.
    Type: Grant
    Filed: July 7, 1997
    Date of Patent: May 18, 1999
    Assignees: SMS Schloemann-Siemag AG, Hundt & Weber GmbH
    Inventor: Ulrich Stein
  • Patent number: 5897071
    Abstract: Wires are coiled by rotating about a main axis a curved laying tube having an upstream end opening generally at the axis and directed axially upstream and a downstream end opening radially offset from the axis and directed generally tangentially and feeding a leading end of the wire into the tube upstream end so that the wire issues from the downstream end of the tube in a curved condition and is laid in a succession of turns on a surface below the downstream end. Passage of a trailing end of the wire through the laying tube is detected and a drum having an inner surface directed toward and centered on the axis at the tube downstream end is closed around the downstream end of the tube to confine the wire inside the drum as passage of the trailing end through the laying tube is detected. The drum is opened from around the downstream end of the tube after passage of the trailing end through the tube and the drum is held open until detection of passage of another trailing end through the tube.
    Type: Grant
    Filed: December 18, 1997
    Date of Patent: April 27, 1999
    Assignee: SMS Schloemann-Siemag AG
    Inventors: Albert Hauck, Siegfried David
  • Patent number: 5874813
    Abstract: A load-balancing method for a multiplicity of controlled drives, especially individual electric motors of the rolls of a leveling machine for metal strip, in which all of the motors have speed and current-control circuits and are interconnected by a superordinate memory programmable computer or controller. A respective load-balancing controller, preferably of the PI type, is provided between the computer and the input to the current controller to vary the current setpoint signal supplied to the latter by the speed controller in each system.
    Type: Grant
    Filed: July 11, 1997
    Date of Patent: February 23, 1999
    Assignee: SMS Schloemann-Siemag AG
    Inventors: Thorsten Bode, Jurgen Bernhardt
  • Patent number: 5857370
    Abstract: A method of and an apparatus for the cropping of leading or trailing end portions of rolled workpieces in which downstream of the rotary shear, a diverter is provided and upstream of the shear there is a rocker guiding the workpiece to the shear and having a cardan type articulation allowing pivotal movement of the rocker about horizontal and vertical axes selectively.
    Type: Grant
    Filed: March 21, 1997
    Date of Patent: January 12, 1999
    Assignee: SMS Schloemann-Siemag AG
    Inventors: Gunter Grenz, Nurettin Oeztuerk
  • Patent number: 5855134
    Abstract: A wire roll stand with roll rings mounted in a cantilevered manner onto roll shafts, wherein the roll rings can be axially clamped through spacer rings against an end of the respective roll shaft. The roll shafts are adjustable by eccentric bushings mounted in a housing and the eccentric bushings as well as the roll shafts are sealed relative to walls of the housings. The housing wall through which the roll shafts extend is equipped with openings which take into consideration the adjusting range of the roll shafts, wherein the openings are fixedly lined with sealing rings having a U-shaped profile. The spacer rings have a U-shaped profile and are composed of at least two parts with separating surfaces thereof extending within the profile yokes, wherein the sides of the spacer rings rest on the sides of the sealing rings within the adjusting range.
    Type: Grant
    Filed: December 19, 1997
    Date of Patent: January 5, 1999
    Assignee: SMS Schloemann-Siemag AG
    Inventors: Friedhelm Womelsdorf, Gerhard Pithan, Rudiger Grimmel, Karl Keller
  • Patent number: 5787749
    Abstract: A universal rolling mill stand includes a drive side roll mount, an operator's side roll mount extending parallel to the drive side roll mount and adapted to move away therefrom, and an alternate frame, in which horizontal and vertical rolls are mounted and which is movable together with the operator's side roll mount.
    Type: Grant
    Filed: October 15, 1993
    Date of Patent: August 4, 1998
    Assignee: SMS Schloemann Siemag AG
    Inventors: Hans-Jurgen Reismann, Konrad Hamraths