Patents by Inventor Wilfried Bald
Wilfried Bald 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).
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Patent number: 7251978Abstract: The aim of the invention is to improve known roll stands (10) which are characterized by working rolls (1,2) of various diameters, in such a way that a strip is obtained which is largely free of tensions and undulations, has a desired strip profile superelevation, and can be used approximately universally.Type: GrantFiled: January 18, 2002Date of Patent: August 7, 2007Assignee: SMS Demag AGInventors: Jürgen Seidel, Wilfried Bald
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Patent number: 6832432Abstract: A hot-rolling mill for flat products with at least two continuous casting units, wherein the continuous casting units are followed by a shear each and a tunnel furnace with transfer car each, a common breaking-down train, a finishing train, a cooling stretch and at least one reeling device. A connecting device is arranged between the tunnel furnaces and the breaking-down train for connecting the continuously cast slabs which have been cut into the desired coil weights.Type: GrantFiled: March 27, 2002Date of Patent: December 21, 2004Assignee: SMS Schloemann-Siemag AktiengesellschaftInventors: Wilfried Bald, Dieter Rosenthal
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Publication number: 20040040358Abstract: The aim of the invention is to improve known roll stands (10) which are characterised by working rolls (1, 2) of various diameters, in such a way that a strip is obtained which is largely free of tensions and undulations, has a desired strip profile superelevation, and can be used approximately universally.Type: ApplicationFiled: July 19, 2003Publication date: March 4, 2004Inventors: Jurgen Seidel, Wilfried Bald
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Publication number: 20020095764Abstract: A hot-rolling mill for flat products with at least two continuous casting units, wherein the continuous casting units are followed by a shear each and a tunnel furnace with transfer car each, a common breaking-down train, a finishing train, a cooling stretch and at least one reeling device. A connecting device is arranged between the tunnel furnaces and the breaking-down train for connecting the continuously cast slabs which have been cut into the desired coil weights.Type: ApplicationFiled: March 27, 2002Publication date: July 25, 2002Inventors: Wilfried Bald, Dieter Rosenthal
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Patent number: 6216516Abstract: The invention relates to an installation for cold rolling strip-shaped rolling material, with a reversing stand disposed between two reel-up or unreeling coils or reels, and a second reversing stand in the rolling line of the first reversing stand, with both stands capable of being adjusted corresponding to consecutive passes for performing the rolling process, and to a method of cold rolling.Type: GrantFiled: April 21, 1999Date of Patent: April 17, 2001Assignee: SMS Schloemann-Siemag AGInventors: Klaus Klamma, Wilfried Bald
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Patent number: 6149740Abstract: A method of and apparatus for manufacturing hot-rolled steel strips from a continuously cast primary material, preferably thin slabs, in a plurality of successive steps in a continuous operation is disclosed. In the invention, thin slabs, which leave an equalizing furnace, are heated above the maximum temperature that can be achieved in the equalizing furnace and are thereafter are broken down in a break-down train, with the broken-down thin slabs being subsequently recrystallized and cooled down to a rolling temperature before being finish-rolled in the finishing train.Type: GrantFiled: April 13, 1998Date of Patent: November 21, 2000Assignee: SMS Schloemann-Siemag AktiengesellschaftInventors: Wilfried Bald, Dieter Rosenthal
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Patent number: 5927127Abstract: The invention relates to an installation for cold rolling strip-shaped rolling material, with a reversing stand disposed between two reel-up or unreeling coils or reels, and a second reversing stand in the rolling line of the first reversing stand, with both stands capable of being adjusted corresponding to consecutive passes for performing the rolling process.Type: GrantFiled: December 18, 1997Date of Patent: July 27, 1999Assignee: SMS Schloemann-Siemag AktiengesellschaftInventors: Klaus Klamma, Wilfried Bald
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Patent number: 5802902Abstract: A production plant for rolling hot strip from slabs produced by continuous casting, wherein a shearing machine is arranged following a continuous casting plant of the casting machine and in front of an equalizing furnace, and an additional shearing machine and a descaling unit are arranged following the equalizing furnace and in front of a rolling mill, and wherein a heating or cooling unit and a strip reeling unit of coiling machine are arranged following the rolling mill. A first roll stand group forming a continuously operating rolling train is composed of several four-high stands, for example, five four-high stands; individual heating devices are provided also between the successive four-high stands of this group of roll stands; in addition, the reeling unit or the reeling machine is configured as a double reeling machine.Type: GrantFiled: November 1, 1996Date of Patent: September 8, 1998Assignee: SMS Schloemann-Siemag AktiengesellschaftInventors: Dieter Rosenthal, Wilfried Bald
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Patent number: 5746081Abstract: The invention relates to an installation for cold rolling strip-shaped rolling material, with a reversing stand disposed between two reel-up or unreeling coils or reels. Approximately 450,000 tons of hot rolled strip can be rolled in the course of one year into cold strips in such single stand reversing trains. In order to be able to roll 700,000 tons of cold strip per year, a second reversing stand in the rolling line of the first reversing stand is provided and both stands can be adjusted corresponding to consecutive passes for performing the rolling process.Type: GrantFiled: December 10, 1996Date of Patent: May 5, 1998Assignee: SMS Schloemann-Siegmag AktiengesellschaftInventors: Klaus Klamma, Wilfried Bald
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Patent number: 5021265Abstract: A roll arrangement for the non-deforming treatment of moving web-type or strip-type products. The arrangement includes at least two rotatable rolls which are adjustable radially relative to each other. The arrangement is used, for example, for drying one or both surfaces of the product. The rolls are axially adjustable in opposite direction and each roll has slightly S-shaped or bottle-shaped contour over the entire length of the roll body, in such a way that the contours of two rolls arranged on both sides of a roll gap complement each other only in a certain relative axial position of these rolls. In other axial positions of the rolls, the roll gap becomes narrower either in the center or at the ends of the rolls, so that a uniform pressing action or other uniform non-deforming treatment of the product is possible over the entire width of the product independently of the bending of the rolls and/or deviations from the plane-parallelism of the surfaces of the product.Type: GrantFiled: March 16, 1989Date of Patent: June 4, 1991Assignee: SMS Schloemann-Siemag AktiengesellschaftInventors: Wilfried Bald, Hugo Feldmann, Manfred Pabst, Rudiger Fischer
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Patent number: 4862570Abstract: An apparatus is provided for removing scale from a hot rolled steel strip by rolls acting by grinding and/or milling so that these rolls are uniformly effective in all regions of the steel strip and an appropriate uniform removal of the scale layer occurs. This is attained when driven grinding rolls adjustable toward the surfaces of the steel strip are provided of which at least two opposing rolls are axially slidable in opposite directions and have inversely oriented S-shape contours. These contours complement each other completely flawlessly in one definite position of the grinding rolls. In one such position the rolls provide a uniform engagement on both sides of a steel strip with a nearly rectangular profile.Type: GrantFiled: January 6, 1987Date of Patent: September 5, 1989Assignee: SMS Schloemann-Siemag AktiengesellschaftInventors: Wilfried Bald, Karl-Ernst Boucke, Hans Rommen, Manfred Fritz, Friedrich Hollmann
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Patent number: 4841761Abstract: The rolling mill comprises a plurality of working rolls and supporting rolls or a plurality of working rolls, intermediate rolls and supporting rolls. The intermediate rolls with their mounts and the slender working rolls ussed with them in six-high operation are exchangeable with or replaceable by larger thicker working rolls for two-high operation. No contact can occur between the body of a working roll and the body of the adjacent supporting roll during use as a two-high mill. In two-high operation the mount of a working roll is provided with a spacer piece engaging against the mounting member of the adjacent supporting roll. The mounts of the thicker working rolls used in two-high operation can be fitted into the guide pieces which act as guides for the mounting pieces of the intermediate rolls when the rolling mill is used as a six-high mill.Type: GrantFiled: March 9, 1988Date of Patent: June 27, 1989Assignee: SMS Schloemann-Siemag AktiengesellschaftInventors: Erich Stoy, Wilfried Bald, Hans Rommen
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Patent number: 4831854Abstract: The rolling mill for mechanical descaling of hot rolled steel is constructed according to the slidable roll process with reducing rolls so that a unform operation with different and/or changing shape steel strips can obtained. This is attained when the rolling mill has at least two rolls slidable in opposite directions whose body surfaces are constructed with S-shape contours positioned inversely to each other so that these contours compliment each other flawlessly in one certain axial relative position. When sliding the rolls in opposite directions in one case the contour is decreased in the center region of the steel strip and when slid in the opposite directions in the other case the contour is increased in the center region. Thus the rolls can be adjusted to fit a gently convex steel strip profile by axially sliding the rolls in opposite directions as also rolled strips with a thickness centrally reduced in comparison to that of the edge regions can by appropriate sliding of the rolls opposite each other.Type: GrantFiled: January 6, 1987Date of Patent: May 23, 1989Assignee: SMS Schloemann-Siemag AktiengesellschaftInventors: Wilfried Bald, Karl-Ernst Boucke, Hans Rommen, Manfred Fritz, Friedrich Hollmann
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Patent number: 4736609Abstract: The rolls of a rolling mill, especially the working rolls, are horizontally shifted by a compact adjusting device, with use being made, as required, of guide pieces. The device is readily arranged in cylinder blocks, and the movements of the device can be easily monitored, transmitted, and set. The predetermined motions are carried out in rigidly controlled manner and no elastic yielding is allowed because of pressure plates extending in the windows of the base frame members. The pressure plates can be horizontally aligned and they cooperate with the holding elements which are to be shifted. The pressure plates are supported by wedges which can be shifted horizontally and transversely with respect to the plane of the frame, by way of pressure posts which operatively engage the pressure plates.Type: GrantFiled: August 14, 1986Date of Patent: April 12, 1988Assignee: SMS Schloemann-Siegmag AktiengesellschaftInventors: Gunter Schiller, Helmut Setzer, Wilfried Bald
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Patent number: 4711116Abstract: A roll stand has a frame, a pair of small-diameter and substantially parallel working rolls defining a workpiece nip, and respective journal blocks supporting the working rolls in the frame for rotation about substantially parallel axes flanking the nip. These working-roll journal blocks and the respective working rolls can be axially shifted in the frame and the working rolls can be bent positively and negatively, that is respectively convex and concave toward the workpiece. A pair of large-diameter and substantially parallel backup rolls flank and bear toward the nip on the working rolls. Respective journal blocks support the backup rolls in the frame for rotation about substantially parallel axes flanking and generally coplanar with the working-roll axes. A strip is passed repeatedly in a multipass run through the nip generally perpendicular to the plane while the working rolls are pressed against the workpiece to reduce its thickness.Type: GrantFiled: September 25, 1986Date of Patent: December 8, 1987Assignee: SMS Schloemann-Siemag AGInventor: Wilfried Bald
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Patent number: 4674313Abstract: A roll stand has a frame, an upper backup roll and a lower backup roll rotatable in the frame about respective vertically spaced axes, and an upper working roll and a lower working roll flanked by and operatively engaging the respective backup rolls. A workpiece normally passes horizontally through the nip formed by the working rolls. Actuators can urge the backup rolls toward each other with a high force and with a low force. Respective upper and lower drives are connected to the respective backup rolls and energizable for rotating same and thereby pulling the workpiece engaged between the working rolls through the roll stand. A clutch is connected between one of the drives and the respective backup roll and is openable to rotationally disconnect the one drive from its backup roll. A controller is connected to the one drive and the clutch for deenergizing the one drive and opening the clutch for low-force rolling. For high-force rolling the clutch is closed and both drives are energized.Type: GrantFiled: March 29, 1985Date of Patent: June 23, 1987Assignee: SMS Schloemann-Siemag AGInventors: Wilfried Bald, Klaus Klamma
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Patent number: 4669296Abstract: A roll stand has a frame, a pair of small-diameter and substantially parallel working rolls defining a workpiece nip, and respective journal blocks supporting the working rolls in the frame for rotation about substantially parallel axes flanking the nip. These working-roll journal blocks and the respective working rolls can be axially shifted in the frame and the working rolls can be bent positively and negatively, that is respectively convex and concave toward the workpiece. A pair of large-diameter and substantially parallel backup rolls flank and bear toward the nip on the working rolls. Respective journal blocks support the backup rolls in the frame for rotation about substantially parallel axes flanking and generally coplanar with the working-roll axes. A strip is passed repeatedly in a multipass run through the nip generally perpendicular to the plane while the working rolls are pressed against the workpiece to reduce its thickness.Type: GrantFiled: December 5, 1983Date of Patent: June 2, 1987Assignee: SMS Schloemann-Siemag AGInventor: Wilfried Bald
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Patent number: 4631948Abstract: A rolling stand has a support frame, a pair of small-diameter working rolls defining a workpiece nip open perpendicular to the plane and rotatable about respective horizontal, parallel, and vertically spaced axes. A pair of large-diameter backup rolls are rotatable about respective axes parallel to and vertically flanking the working-roll axes. These backup-roll axes define a vertical plane offset from the working-roll plane. In addition each backup roll bears vertically on the respective working roll and a drive counterrotates the rolls of each roll pair to draw an elongated workpiece of predetermined maximum width generally perpendicular to the planes through the nip. The working rolls are longer than the maximum workpiece width and have end portions projecting axially beyond the workpiece. The rolls are pressed vertically toward the nip to compress and deform the workpiece thereat.Type: GrantFiled: April 2, 1984Date of Patent: December 30, 1986Assignee: SMS Schloemann-Siemag AGInventors: Wilfried Bald, Erich Stoy, Hans Rommen, Friedrich Hollmann
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Patent number: 4598566Abstract: A roll stand has a frame and a pair of small-diameter and substantially parallel working rolls defining a workpiece nip. Thus a strip to be rolled passes in a horizontal upstream-to-downstream direction through the nip. Respective pairs of upper and lower upstream support levers have outer ends pivoted on the frame and inner ends downstream therefrom and respective pairs of upper and lower downstream support levers have outer ends pivoted on the frame downstream of the nip and inner ends pivoted on the inner ends of the upstream levers. Respective pairs of journal blocks mounted on the inner ends of the levers support the working rolls for rotation about substantially parallel axes flanking the nip. A pair of large-diameter and substantially parallel backup rolls flank and bear toward the nip on the working rolls and are rotatable in the frame about substantially parallel axes flanking the working-roll axes and offset therefrom in the direction.Type: GrantFiled: March 7, 1984Date of Patent: July 8, 1986Assignee: SMS Schloemann-Siemag AGInventors: Wilfried Bald, Erich Stoy, Hans Rommen, Hans-Friedrich Heisterkamp
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Patent number: 4563888Abstract: A roll stand has a frame having two sides spaced apart transversely of a workpiece travel direction and formed with throughgoing windows and a pair of vertically spaced traverses extending between the frame sides. Two outer backup rolls centered on parallel axes transverse to the direction having journal blocks vertically displaceable and guided in the windows of the frame sides. Upper and lower guide elements vertically displaceable in the windows between the outer-roll blocks carry the journal blocks of two inner backup rolls. Pairs of positioning actuators in the windows vertically between the inner-roll blocks carry supports which carry second upper and lower guide elements vertically displaceable on the supports. The positioning actuators are expansible and contractile to displace the second guide elements in the direction. Two working rolls between and parallel to the other roll axes each have two journal blocks fitted to and axially slidable in the second guide elements.Type: GrantFiled: October 3, 1984Date of Patent: January 14, 1986Assignee: SMS Schloemann-Siemag AGInventors: Wilfried Bald, Hans Rommen, Erich Stoy