Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
  • B21B—ROLLING OF METAL
  • B21B39/00—Arrangements for moving, supporting, or positioning work, or controlling its movement, combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
  • B21B39/02—Feeding or supporting work; Braking or tensioning arrangements, e.g. threading arrangements
  • B21B39/08—Braking or tensioning arrangements
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
  • B21B—ROLLING OF METAL
  • B21B39/00—Arrangements for moving, supporting, or positioning work, or controlling its movement, combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
  • B21B39/02—Feeding or supporting work; Braking or tensioning arrangements, e.g. threading arrangements
  • B21B39/08—Braking or tensioning arrangements
  • B21B39/082—Bridle devices
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
  • B21B—ROLLING OF METAL
  • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
  • B21B—ROLLING OF METAL
  • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
  • B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
  • B21B—ROLLING OF METAL
  • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
  • B21B37/16—Control of thickness, width, diameter or other transverse dimensions
  • B21B37/24—Automatic variation of thickness according to a predetermined programme
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
  • B21B—ROLLING OF METAL
  • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
  • B21B37/48—Tension control; Compression control
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
  • B21B—ROLLING OF METAL
  • B21B39/00—Arrangements for moving, supporting, or positioning work, or controlling its movement, combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
  • B21B—ROLLING OF METAL
  • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
  • B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
  • B21B1/30—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a non-continuous process
  • B21B1/32—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a non-continuous process in reversing single stand mills, e.g. with intermediate storage reels for accumulating work
  • B21B1/36—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a non-continuous process in reversing single stand mills, e.g. with intermediate storage reels for accumulating work by cold-rolling
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
  • B21B—ROLLING OF METAL
  • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
  • B21B37/48—Tension control; Compression control
  • B21B37/52—Tension control; Compression control by drive motor control
  • B21B37/54—Tension control; Compression control by drive motor control including coiler drive control, e.g. reversing mills

Definitions

• the invention relates to a rolling mill for rolling metallic strip, in particular of steel strip, which has at least one rolling stand, an upstream reeling device and a downstream reeling device, wherein between an upstream reeling device and rolling stand and / or between rolling mill and downstream reel an S-roll unit Is ⁇ , having two the band S-shaped leading roles.
• tailored blanks The essential feature of these components, which is of particular interest in this context, is that they have a variable thickness.
• tailored blanks were mainly made by welding. However, for the production of flexible cold rolling has proven to be particularly advantageous, can be produced with the tailored blanks.
• the thickness of the rolled stock is changed during rolling.
• the change of the roll gap can be done periodically. Due to the thickness change, it is particularly on the inlet,. but also on the outlet side of the roll stand for mass flow disturbances and Glas ⁇ fluctuations.
• the dynamics of the reel motors are no longer sufficient for their compensation, so that in such systems so-called dancer rolls are used between the rolling stand and the reels.
• dancer rolls are used between the rolling stand and the reels.
• a cold rolling mill for cold rolling of metallic strip known and has a single stand with means for adjusting the roll gap and a KaIt- roller single frame upstream reel means for unwinding the tape and a roll stand downstream reel means for reeling the tape on.
• a strip store for mass flow regulation or strip tension regulation of the rolling process is provided between the pre-arranged coiling device and the rolling stand.
• This tape storage consists of at least three rollers, wherein the middle roller is designed as a dancer roll and can be moved perpendicular to the conveying direction of the band.
• the dancer rollers described in the cited documents are connected to a linear actuator, with which they can be controlled or moved in a direction perpendicular to the För ⁇ direction of the tape direction. This can fulfill the tape storage function which is indispensable for flexible cold rolling.
• Looper be ⁇ known, i. Rolls which are applied to the led to the rolling stand or ist ⁇ led by this band to make, for example, a tensile force determination in the band can.
• the rolling force can be reduced by tensile forces on each side of the roll gap, it must not be too high only at the last stitch, since experience has shown that problems may occur in the subsequent process steps, in particular during annealing.
• S-rolls S-roll units
• the invention is therefore based on the object, a rolling mill for rolling metallic strip of the type mentioned in such a way that can be achieved with simple means and thus in an economical manner that both a band storage function, especially in flexible rolling, is given as well as a can be influenced influenced Switzerlanddifferenz between Walz ⁇ scaffolding and reels.
• This object is achieved in that a first role of the S-roll unit is arranged stationary and a second roller of the S-roll unit is arranged to be movable relative to the first roller.
• the second roller which is movably arranged relative to the first roller, is rotatably arranged on a pivoting arm, which is mounted on one side in a stationary axis. Both axes of the rollers of the S-roll unit are arranged parallel to each other.
• the solid axis corresponds to the axis of rotation of the first roll.
• a linear actuator is preferably articulated on the pivot arm in a pivot point remote from the stationary axis.
• a linear actuator advantageously a hydraulic piston-cylinder system is used.
• means for driving at least one of the rollers of the S-roller unit can be provided.
• the proposed invention is advantageously used in a cold rolling mill.
• the rolling stand is preferably provided as a single frame.
• the proposed system is particularly suitable for flexible rolling, which means that the rolling mill can have means for flexibly adjusting the roll gap.
• the belt transport or its handling is finally improved by the fact that at least one of the reel devices is equipped with means for speed control.
• the proposed system makes it possible in a very simple and therefore cost-effective manner to provide a rolling mill for flexible rolling which makes available a strip accumulator which is essential in this type of process. Furthermore, the band is also held under the required tension, so that the rolling itself can be carried out in a process-advantageous manner.
• FIG. 1 is a schematic side view of a rolling mill for flexible rolling of a metal strip and Fig. 2 shows an S-roll unit of the outlet side of the rolling mill in an enlarged view.
• FIG. 1 schematically shows a rolling mill in which a coaxed steel strip 1 is unwound from an upstream reeling device 3 and fed to a single cold rolling mill 2.
• a downstream reeling device 4 is provided, which rewinds the rolled metal strip 1.
• the reel devices 3, 4 are provided with drives, not shown, so that the belt 1 can be unwound and wound up in a controlled or regulated manner.
• the tape 1 has - viewed in its longitudinal direction - a non-constant thickness. That is, during the rolling process, the roll gap is changed according to a predetermined profile to produce a strip whose thickness changes periodically.
• an S-roll unit 5 or 6 is arranged both between the upstream reeling device 3 and the rolling stand 2 and between the rolling stand 2 and the downstream reeling device 4.
• Each S-roller unit 5, 6 has two rollers 7 and 8 or 9 and 10, which are arranged in a manner known per se to one another such that the band 1 is guided in an S-shape. Due to the consequent wrapping of the rollers 7, 8, 9, 10, it is possible, with appropriate drive of the rollers to transmit a force to the belt 1 and so the desired tensile force in the belt 1 between the S-roller unit 5, 6 and the rolling stand 2 to hold.
• the S-roller units 5 and 6 are constructed as shown in Fig. 2.
• One roller 9 (or 7) which feeds the belt 1 to the rolling stand 2 or removes it from it, is mounted in a stationary manner.
• the other end of the Schwenk ⁇ arms 11 is mounted a fixed axis 12, which corresponds to the axis of rotation of the first roller 9, 7.
• a linear actuator 14 is articulated, this being designed as a hydraulic piston-cylinder system.
• the Ver ⁇ supply of the actuator 14 with hydraulic oil is indicated in Fig. 2.
• the pivot point 13 can be raised or lowered, so that the second roller 8, 10 can be pivoted about its pivot axis 12. This results in a longer or shorter distance for the belt 1 between roll stand 2 and reel devices 3 and 4, whereby it is the S-roll units 5, 6 possible to exercise a tape storage function.
• the described structure of the rolling mill and in particular of the two S-roll units 5, 6 makes it possible to compensate for the mass flow change occurring during flexible cold rolling and at the same time between rolling stand 2 and reels 3, 4 to build that Glasdifferenz with an optimal rolling process with a very simple design is possible.
• the strip thickness control can be improved. It becomes possible to be able to make the settings of the tensile stresses that are favorable for the rolling process without regard to the tensile stresses present on the reeling devices.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Metal Rolling (AREA)
• Winding, Rewinding, Material Storage Devices (AREA)
• Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)
• Floor Finish (AREA)
• Professional, Industrial, Or Sporting Protective Garments (AREA)

Priority Applications (8)

Applications Claiming Priority (2)

Publications (1)

Family

ID=35033388

Family Applications (1)

Country Status (14)

Cited By (1)

Families Citing this family (9)

Citations (4)

Family Cites Families (7)

• 2004
  • 2004-08-26 DE DE102004041321A patent/DE102004041321A1/de not_active Withdrawn
• 2005
  • 2005-08-10 EP EP05777530A patent/EP1784266B1/de active Active
  • 2005-08-10 CN CN2005800286991A patent/CN101010154B/zh not_active Expired - Fee Related
  • 2005-08-10 KR KR1020067007277A patent/KR101139305B1/ko active IP Right Grant
  • 2005-08-10 WO PCT/EP2005/008686 patent/WO2006021324A1/de active Application Filing
  • 2005-08-10 CA CA2548796A patent/CA2548796C/en not_active Expired - Fee Related
  • 2005-08-10 US US11/660,174 patent/US20070261456A1/en not_active Abandoned
  • 2005-08-10 JP JP2007528677A patent/JP4976291B2/ja not_active Expired - Fee Related
  • 2005-08-10 RU RU2006135625/02A patent/RU2409435C2/ru not_active IP Right Cessation
  • 2005-08-10 AT AT05777530T patent/ATE410248T1/de active
  • 2005-08-10 DE DE502005005642T patent/DE502005005642D1/de active Active
  • 2005-08-10 ES ES05777530T patent/ES2311233T3/es active Active
  • 2005-08-10 BR BRPI0506421-0A patent/BRPI0506421A/pt not_active IP Right Cessation
  • 2005-08-12 TW TW094127493A patent/TWI346586B/zh not_active IP Right Cessation
• 2006
  • 2006-03-08 ZA ZA200601956A patent/ZA200601956B/en unknown

Patent Citations (4)

Non-Patent Citations (1)

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