Patents by Inventor Adolf Zajber

Adolf Zajber has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20070023161
    Abstract: A method for the continuous casting and direct deformation of a metal strand, especially a cast steel strand, includes guiding the metal strand in a curved strand glide after the continuous casting mold, subjecting the strand to a secondary cooling with a liquid coolant, and preparing the strand in an automatically controlled way for the deformation pass at a uniform temperature field in the strand cross-section, such that the cast strand is cooled with a liquid coolant only in the longitudinal sections in which the cast strand is liquid in the cross-section. The temperature of the cast strand is equalized in a transition zone before, in, and/or after a bending-straightening unit by insulation of the exterior surface that is radiating heat, without the use of the liquid coolant, and is further equalized by heat radiation in zones until the temperature field consists of elliptical, horizontally oriented isotherms.
    Type: Application
    Filed: September 7, 2006
    Publication date: February 1, 2007
    Inventors: Axel Weyer, Dirk Letzel, Horst Gartner, Wilfried Milewski, Adolf Zajber
  • Publication number: 20060191661
    Abstract: The invention relates to a continuous casting mold for casting molten metals, particularly steel materials, at high casting rates to form polygonal billet, bloom, and preliminary section castings (1) and the like. Said mold is comprised of a tubular mold (2) made of copper or of copper alloys whose entry cross-section (3) on the pouring-in side (4) has both a cross-section (5), which is enlarged compared to the exit cross-section (6) on the casting exit side (7), and corner radii (8). The continuous casting mold can be improved in a technologically process-oriented manner with regard to requirements concerning the cooling processes. To this end, the inner geometric cross-sectional shape (9) and the associated dimensions (10) are provided so that they are analogous to the amount of solidification heat, which is capable of being locally dissipated, at a chosen casting rate and are analogous to the extension of the tubular mold (2).
    Type: Application
    Filed: October 1, 2003
    Publication date: August 31, 2006
    Inventors: Adolf Zajber, Dirk Letzel, Josef Kockentiedt, Uwe Plociennik
  • Patent number: 7047621
    Abstract: A method for casting and rolling preliminary sections, especially H-sections, and a device for the support, guidance and deformation of a metal strand, especially a steel cast strand (1), in a continuous casting installation for preliminary sections with soft reduction (9), wherein roll carriers (2) are arranged below the continuous casting mold opposite each other on each side of the cast strand (1a, 1b), the rolls of said carriers being in transport and/or deformation connection with said cast strand, and wherein to avoid segregation and porosity, the preliminary section is precast in the continuous casting mould with a bulge (6a) on the flanges (7) on the surface (6b) of the web of said preliminary section, and the bulges (6a) of the flange (7) and the web of the preliminary section (6) are rolled flat in the soft reduction area (9) in such a way that the outer surfaces of the flange (7a) and the web surfaces of the preliminary section (6b) are largely plane.
    Type: Grant
    Filed: December 1, 2001
    Date of Patent: May 23, 2006
    Assignee: SMS Demag AG
    Inventors: Adolf Zajber, Thomas Fest
  • Publication number: 20060054297
    Abstract: Continuously cast products (12) are often provided with surface defects such as oscillation marks (17) and other non-homogeneous structures in the cast state thereof during production in a casting die (11) of a continuous casting plant (10). Defects which render a strip useless for superior applications also frequently occur on the strip surface during subsequent milling of the slab (12?) into a strip. The aim of the invention is to minimize said defects and provide the rolling mill with a slab (12?) having a desired preliminary profile and an improved near-surface structure. Said aim is achieved by arranging a reducing roll stand (30) in the area of the bending rolls or straightening driver rolls (24) within the continuous casting plant (10).
    Type: Application
    Filed: January 16, 2004
    Publication date: March 16, 2006
    Inventors: Adolf Zajber, Dirk Letzel
  • Publication number: 20060048915
    Abstract: A device for the continuous casting of metals, especially steel material, to elongated products in a multistrand casting apparatus with a plurality of continuous casting molds which are oscillatingly driven in an oscillating frame (2) by means of leaf springs (4) whereby the leaf springs (4) extend transversely to the casting direction (1) and serve for guide and weight compensation. The smallest possible strand spacing “A” is provided for that on a longitudinal foundation frame (5) to housings (6a) in the form of compact flat cassettes (6) are secured one behind the other in the strand travel direction. In the housings upper and lower leaf spring pairs (4a; 4b) run transversely to the cast strands (3) and the oscillating strands (11) engage the leaf spring pairs (4a; 4b), whereby a front oscillating drive (11a) works synchronously with the rear oscillating drive (11b).
    Type: Application
    Filed: September 2, 2003
    Publication date: March 9, 2006
    Applicant: SMS DEMAG AKTIENGESELLSCHAFT
    Inventors: Thomas Fest, Herbert Brotzki, Martin Becker, Adolf Zajber
  • Publication number: 20050126739
    Abstract: The invention relates to a method for the weight-accurate filling of ingot molds in a non-iron casting machine, e.g. a copper anode casting machine or a zinc anode casting machine, which is configured in the form of casting wheels that are use for production in a fully mechanized casting operation and are provided with the ingot molds. The aim of the invention is to obtain the desired precise-weight quality of a piece and exact plane parallelism of the bordering surfaces thereof. Said aim is achieved by carrying out the following steps: first, a liquid metal is introduced into an intermediate trough (4,4?) at a regulated mass flow rate, the continuous dynamic weight increase being simultaneously determined; second, liquid metal is fed into a dosing trough (4, 4?) which is located on each side of the intermediate trough (4, 4?) by alternately tilting the intermediate trough (4, 4?) on one side followed by the other.
    Type: Application
    Filed: March 12, 2003
    Publication date: June 16, 2005
    Inventors: Erich Willems, Adolf Zajber, Heinz Leuwer, Ronald Wilmes
  • Patent number: 6892794
    Abstract: The secondary cooling and the strand support are matched to the cooling state of a continuously cast strand cross section. The secondary cooling and support are reduced in dependence upon the solidification profile of the cast strand along the distance traveled.
    Type: Grant
    Filed: September 28, 2001
    Date of Patent: May 17, 2005
    Assignee: SMS Demag Aktiengesellschaft
    Inventors: Adolf Zajber, Thomas Fest
  • Patent number: 6889748
    Abstract: The invention relates to a device for the continuous casting of metals, especially steel, by means of a continuous casting mold (1) which is mounted in an oscillating frame (3). Said oscillating frame can be driven so that it oscillates in the direction of casting (2), the course of the oscillation movement and/or the frequency being adjustable. The oscillating frame (3) is mounted with spring assemblies (4a, 4b; 5a, 5b) arranged symmetrically on both sides of the strand, for guiding and weight compensation. The device is used on a continuous casting mold (1) with a shaped casting cross-section (1a), which is mounted in the oscillating frame (3). The leaf-spring-mounted oscillating frame (3) can be operated with the continuous casting mold (1) in a resonance oscillation method in order to give the preliminary section a better surface.
    Type: Grant
    Filed: May 5, 2001
    Date of Patent: May 10, 2005
    Assignee: SMS Demag AG
    Inventors: Lothar Fischer, Adolf Zajber, Thomas Fest, Siegbert Schwenecke
  • Patent number: 6854508
    Abstract: A dummy bar for a continuous metal casting plant, particularly for a continuous casting plant for preliminary steel sections, includes a one-piece head piece having dimensions corresponding to the dimensions of the mold cross-section and two rows of segments connected to the head piece. The two rows of segments extend parallel to each other in the longitudinal direction of the dummy bar and are spaced apart from each other by the width of the dummy bar. Flexible steel bands are mounted on each row of segments for connecting the segments.
    Type: Grant
    Filed: November 15, 2001
    Date of Patent: February 15, 2005
    Assignee: SMS Demag Aktiengesellschaft
    Inventors: Adolf Zajber, Thomas Fest
  • Publication number: 20050011629
    Abstract: The invention relates to a method and a continuous casting device for the direct shaping of a metal strand, in particular a steel cast stand (1) of any format (1d). According to said method, the cast strand (1) is only cooled by a liquid coolant (4) in longitudinal sections (6), where the interior of the cast strand (1) remains liquefied and the temperature of the cast strand (1) in a transition zone (7) upstream of, in and/or downstream of a bending and straightening unit (8) is evened out by an insulation of the exterior surface (1b), essentially without the use of a liquid coolant (4), and by progressive thermal radiation. The cast strand (1) is shaped in a dynamically variable reduction section (9) as a result of the compressive strength that is measured on individual shaping rolls (10) or roll segments (11), depending on the compressive force that can be locally applied.
    Type: Application
    Filed: January 30, 2003
    Publication date: January 20, 2005
    Inventors: Axel Weyer, Dirk Letzel, Horst Gartner, Wilfried Milewski, Adolf Zajber
  • Publication number: 20040216300
    Abstract: A method for casting and rolling preliminary sections, especially H-sections, and a device for the support, guidance and deformation of a metal strand, especially a steel cast strand (1), in a continuous casting installation for preliminary sections with soft reduction (9), wherein roll carriers (2) are arranged below the continuous casting mold opposite each other on each side of the cast strand (1a, 1b), the rolls of said carriers being in transport and/or deformation connection with said cast strand, and wherein to avoid segregation and porosity, the preliminary section is precast in the continuous casting mould with a bulge (6a) on the flanges (7) on the surface (6b) of the web of said preliminary section, and the bulges (6a) of the flange (7) and the web of the preliminary section (6) are rolled flat in the soft reduction area (9) in such a way that the outer surfaces of the flange (7a) and the web surfaces of the preliminary section (6b) are largely plane.
    Type: Application
    Filed: November 24, 2003
    Publication date: November 4, 2004
    Inventors: Adolf Zajber, Thomas Fest
  • Patent number: 6712123
    Abstract: In a method for changing the section of a billet of a continuous casting plant during continuous casting, wherein opposed sides of the billet are in contact with oppositely positioned roll supports arranged below a continuous casting die, wherein the roll supports are comprised of segments having rolls, wherein adjoining ones of the segments of each roll support are connected to one another by a jointed connection and wherein each segment is configured to be adjustable independent of the other segments with respect to an angular position relative to the billet, and wherein in an initial position the segments of the roll supports are adjusted to a uniform billet section, a thickness reduction can be achieved by advancing sequentially in a direction of continuous casting the segments toward the billet by moving the jointed connections toward the billet in a controlled sequence of adjusting steps or a thickness increase can be achieved by moving sequentially in a direction of continuous casting the segments away
    Type: Grant
    Filed: July 13, 2000
    Date of Patent: March 30, 2004
    Assignee: SMS Schloemann-Siemag Aktiengesellschaft
    Inventors: Axel Weyer, Dirk Letzel, Reiner Külchen, Adolf Zajber
  • Publication number: 20040020633
    Abstract: A method and device for continuous casting and subsequent deformation of a cast strand (1) of steel, especially a cast strand (1) of an ingot shape (2) or a preliminary section shape, in which the secondary cooling (4) and the strand support (11) are matched to the cooling state of the cast strand cross section (1a) with respect to steel quality and in which the segregations and porosity are of significance with respect to further processing and the end uses of the product and require steps for improvement of the 10 internal quality and for the surface qualities, in which the secondary cooling (4) in its geometrical configuration is analogously matched to the solidification profile (5) of the cast strand (1) along the respective distance travelled (6) of the cast strand and in which the cast strand support (11) likewise is analogously reduced in dependence upon the solidification profile (5) of the cast strand (1) of the distance/travelled (6).
    Type: Application
    Filed: April 21, 2003
    Publication date: February 5, 2004
    Inventors: Adolf Zajber, Thomas Fest
  • Publication number: 20030010470
    Abstract: The invention relates to a device for the continuous casting of metals, especially steel, by means of a continuous casting mould (1) which is mounted in an oscillating frame (3). Said oscillating frame can be driven so that it oscillates in the direction of casting (2), the course of the oscillation movement and/or the frequency being adjustable. The oscillating frame (3) is mounted with spring assemblies (4a, 4b; 5a, 5b) arranged symmetrically on both sides of the strand, for guiding and weight compensation. The device is used on a continuous casting mould (1) with a shaped casting cross-section (1a), which is mounted in the oscillating frame (3). The leaf-spring-mounted oscillating frame (3) can be operated with the continuous casting mould (1) in a resonance oscillation method in order to give the preliminary section a better surface.
    Type: Application
    Filed: August 23, 2002
    Publication date: January 16, 2003
    Inventors: Lothar Fischer, Adolf Zajber, Thomas Fest, Siegbert Schwenecke
  • Publication number: 20020129922
    Abstract: A mold for continuous casting of strands and including a pouring spout, and a housing surrounding the pouring spout and spaced from the pouring spout, forming with the pouring spout a gap that provides for flow of cooling medium therethrough, with the gap having a small width in an upper mold region and a relatively large width in a lower mold region.
    Type: Application
    Filed: November 16, 2001
    Publication date: September 19, 2002
    Inventors: Uwe Plociennik, Adolf Zajber
  • Publication number: 20020084055
    Abstract: A dummy bar for a continuous metal casting plant, particularly for a continuous casting plant for preliminary steel sections, includes a one-piece head piece having dimensions corresponding to the dimensions of the mold cross-section and two rows of segments connected to the head piece. The two rows of segments extend parallel to each other in the longitudinal direction of the dummy bar and are spaced apart from each other by the width of the dummy bar. Flexible steel bands are mounted on each row of segments for connecting the segments.
    Type: Application
    Filed: November 15, 2001
    Publication date: July 4, 2002
    Applicant: SMS Demag Aktiengesellschaft
    Inventors: Adolf Zajber, Thomas Fest
  • Patent number: 6328093
    Abstract: A strand guiding segment for slab casting plants with a guiding width for the cast strand is adjustable between guide rollers of a frame on a fixed side and a frame on a detachable side, wherein the frames interact with adjusting units for overcoming the ferrostatic pressure and for adjusting the desired sectional width of the strand. The adjusting units are four independently adjustable pressure cylinders arranged outside of the radiation range at the upper side of the segment, wherein the distance between the segment middle and cylinder which determines the segment width is reduced on both sides by the dimension of the cylinder which has been moved to the upper side of the segment. The segment crossbeams are provided with radiation protection plates instead of water cooling means and cooled side frames are laterally flanged to the bottom frames.
    Type: Grant
    Filed: May 26, 1999
    Date of Patent: December 11, 2001
    Assignee: SMS Schloemann-Siemag Aktiengesellschaft
    Inventors: Adolf Zajber, Martin Becker, Gerhard Arnolds
  • Patent number: 6138743
    Abstract: A device for continuously casting steel includes a continuous casting mold supported in a lifting table and oscillating in the casting direction and at least one oscillation drive acting on the lifting table. The lifting table is constructed with guide blocks extending underneath the plane of the table and a stationary clamping block is arranged between the guide blocks. At least two individual resiliently soft plate springs are mounted along the short sides of the mold underneath the table plane in both sides of the clamping block and extending between the clamping block and the adjacent guide block, wherein the plate springs are arranged at a distance one above the other and so as to extend parallel relative to the corresponding plate springs arranged at the opposite short side of the mold.
    Type: Grant
    Filed: April 14, 1999
    Date of Patent: October 31, 2000
    Assignee: SMS Schloemann-Siemag Aktiengesellschaft
    Inventors: Adolf Zajber, Axel Weyer, Gerhard Arnolds