EP0941787B1 - Führungselement einer Stranggiessanlage - Google Patents

Führungselement einer Stranggiessanlage Download PDF

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Publication number
EP0941787B1
EP0941787B1 EP99103619A EP99103619A EP0941787B1 EP 0941787 B1 EP0941787 B1 EP 0941787B1 EP 99103619 A EP99103619 A EP 99103619A EP 99103619 A EP99103619 A EP 99103619A EP 0941787 B1 EP0941787 B1 EP 0941787B1
Authority
EP
European Patent Office
Prior art keywords
guide
roller
element according
guide element
pressure
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP99103619A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0941787A1 (de
Inventor
Fritz-Peter Prof. Dr. Ing. Pleschiutschnigg
Joachim Schwellenbach
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SMS Siemag AG
Original Assignee
SMS Demag AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE19841841A external-priority patent/DE19841841C2/de
Application filed by SMS Demag AG filed Critical SMS Demag AG
Publication of EP0941787A1 publication Critical patent/EP0941787A1/de
Application granted granted Critical
Publication of EP0941787B1 publication Critical patent/EP0941787B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/16—Controlling or regulating processes or operations
    • B22D11/20—Controlling or regulating processes or operations for removing cast stock
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/12—Accessories for subsequent treating or working cast stock in situ
    • B22D11/128—Accessories for subsequent treating or working cast stock in situ for removing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
    • B21B13/02—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with axes of rolls arranged horizontally
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
    • B21B13/14—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories having counter-pressure devices acting on rolls to inhibit deflection of same under load; Back-up rolls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
    • B21B13/14—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories having counter-pressure devices acting on rolls to inhibit deflection of same under load; Back-up rolls
    • B21B13/147—Cluster mills, e.g. Sendzimir mills, Rohn mills, i.e. each work roll being supported by two rolls only arranged symmetrically with respect to the plane passing through the working rolls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2201/00—Special rolling modes
    • B21B2201/14—Soft reduction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
    • B21B27/02—Shape or construction of rolls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B29/00—Counter-pressure devices acting on rolls to inhibit deflection of same under load, e.g. backing rolls ; Roll bending devices, e.g. hydraulic actuators acting on roll shaft ends
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
    • B21B31/02—Rolling stand frames or housings; Roll mountings ; Roll chocks
    • B21B31/04—Rolling stand frames or housings; Roll mountings ; Roll chocks with tie rods in frameless stands, e.g. prestressed tie rods
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
    • B21B31/16—Adjusting or positioning rolls
    • B21B31/20—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis
    • B21B31/32—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis by liquid pressure, e.g. hydromechanical adjusting
    • 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
    • B21B39/006—Pinch roll sets
    • 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
    • B21B39/008—Rollers for roller conveyors

Definitions

  • the present invention relates to a guide element of a continuous casting plant, in particular a continuous slab caster, for guiding a metal strip in a strand guide direction, with at least one pair relative to one another the metal band of opposite guide rollers, which is a roller gap forming, wherein the pair of guide rollers adjusting means for adjusting associated with a crowning of the roller gap and the adjustment both pressure and position controlled or controlled is operable.
  • the rollers have a concave Mantelline on which the smallest diameter occurs in the middle of the roll.
  • This type of strand concavity may be the strand in the area of solidification and after solidification do not do justice simultaneously. Special reasons for this are z.
  • the strand shell is completely attached to the roller profile caused by the prevailing ferrostatic pressure or the upcoming Steel column between the pouring mirror and the observed strand bowl point.
  • the strand After the last solidification point or after the final solidification, the strand is in frozen in its shape, z. B. with a profile of advantageously 1% thickness increase in the middle of the strand opposite the narrow side, which on the further way of the strand up to the end of the strand leadership as a percentage does not change anymore.
  • the only remaining change in the strand geometry occurs due to the cooling-related shrinkage of the total strand on.
  • the document US-A-4,167,964 relates to a guide stand for in a stationary Mold cast slab.
  • the outer contour of the guide rollers is by means of hydraulic changed stamp changed.
  • the guide rollers themselves are in the Scaffold firmly clamped, even if this over the hydraulic cylinders in case of overload can dodge.
  • the contour of the guide rollers is adjusted via the punches.
  • JP 59 113 963 A does not relate to a pure Guide roller except a roller, which at the hydraulic crater of the almost solidified slab should apply high pressure to the slab from the outside, to produce a good quality inside the slab.
  • the Pressure or pressure roller is therefore "inflatable" in the central region by oil pressure is applied at this point.
  • the slab thereby receives a concave Contour, d. H. the slab thickness is lower in the slab center than at the slab center Slab edges.
  • the document WO 95/20 447 A relates to a leadership or a driver role in a skeleton of a continuous casting plant.
  • the role itself take on a concave form or is it imposed if necessary by shared roles.
  • the rollers can also have a corresponding deflection be imposed in the elasticity under casting load.
  • the object of the present invention is thus a guide element a continuous caster to design such that the strand concavity both is optimally adjustable in the range of solidification as well as after solidification.
  • the object is with a guide element in the preamble of claim 1 mentioned type achieved in that at least one of the guide rollers a Has center storage and that the adjustment to the center storage acts.
  • the adjustment should preferably act on the center bearing.
  • the adjusting device should have at least one support roller act on the at least one leadership role.
  • the action of the support roller on the guide roller is particularly reliable, when the support roller relative to the guide roller to a non-zero Support angle is twisted.
  • the adjuster can also have an additional support roller on the at least acting a guide roller, wherein the support roller and the additional support roller Seen in strand guide direction above or below the guide roller are arranged.
  • the frame has a cross-beam, by means of which he via a centrally arranged with respect to the cross-beam fastening device connected to a base segment guide, the frame - e.g. when heated - expand symmetrically and unhindered.
  • the adjustment of the roller gap between the guide rollers is preferably carried out by means of a hydraulic cushion.
  • the hydraulic cushion is preferably as well as the adjustment both pressure and position controlled or regulated adjustable.
  • a guide element of a thin slab Continuous casting a pair of guide rollers 1, 2 on.
  • the guide rollers 1, 2 form a roller gap 3 and are relative to one another leading metal band 4 opposite.
  • the metal strip 4 has a Thickness between 40 and 100 mm, z. B. 50 mm.
  • the metal strip 4 is the metal strip 4 in a strand guiding direction x feasible.
  • the guide rollers 1, 2 are mounted in frames 5, 6.
  • the frames 5, 6 are tensile and compressive load trained and tie rods 7th braced together.
  • Between the frames 5, 6 is a hydraulic Cushion 8 arranged. By means of this hydraulic pad 8 the frames 5, 6 are adjustable relative to each other.
  • the guide rollers 1, 2 are shown in FIG. 1 as split guide rollers educated. They therefore have center bearings 9, 10. In the middle of crossbeams 5 ', 6' are hydraulic cylinder units 11, 12, which act on the middle bearings 9, 10.
  • the crossbeams 5 ', 6' are part of the respective frame 5, 6.
  • About the hydraulic cylinder units 11, 12 is the crowning the roller gap 3 adjustable.
  • the hydraulic cylinder units 11, 12 thus form an adjustment for adjusting the crowning the roller gap 3, the pair of guide rollers 1, 2 assigned.
  • the crown of the guided metal strip 4 targeted at e.g. 1% or 2% adjustable.
  • the hydraulic cylinder units 11, 12 are both pressure and position-controlled operable. Likewise, the hydraulic Cushions adjustable in both pressure and position. Instead of of hydraulic cylinder units 11, 12 are understood also other adjusting elements can be used, e.g. electromechanical. Instead of a regulation is also a control for pressure and Position applicable.
  • the adjusting device is position-controlled operated and the hydraulic pad 8 position-controlled set. Due to the ferrostatic pressure generated by the Liquid core 4 'is conditional, thus adapts the metal strip 4 to the set roller gap 3 at.
  • the position rules both a defined liquid core reduction possible as well as a defined crowning adjustable. The reduction the strand thickness during the solidification of the metal strip 4 can up to 60%.
  • the adjustment is preferably pressure-controlled operated.
  • the hydraulic pad 8 is in this case preferably set pressure-controlled. Because that fits the Roller gap 3 the now rigid metal strip 4 at. The turning further the guide rollers is thus ensured. If so called Soft reduction should be desired, this may be by default correspondingly high pressure setpoints can be achieved.
  • the lower in Fig. 1 cross-beam 6 ' has a fastening device 13 on.
  • the fastening device 13 is with respect to the Crossbar 6 'arranged centrally.
  • the fastening device 13 is the crossbeam 6 'and with it the frame 5, 6 with a base segment guide 14 connected.
  • the fastening device 13 can work hydraulically or mechanically.
  • the so fixed Crossbar 6 'of the frame 6 can therefore -. at thermal Heating -symmetric expansion. This will be mechanical Tension avoided.
  • the guide rollers 1, 2 can, as shown in FIGS. 2 and 3, also be formed as a continuous guide rollers 1, 2.
  • the corresponding hydraulic cylinder unit 11 acts, 12 via at least one support roller 15, 16 to the respective guide roller 1, 2 a.
  • the support roller 15 the is only supporting role, which acts on the guide roller 1 is preferably the support roller 15 to a support angle ⁇ relative to the respective guide roller 1 is rotated.
  • the support angle ⁇ should be in Range up to a maximum of 10 °.
  • the adjuster as in the case of the lower guide roller 2, also via an additional support roller 17 to the respective guide roller 2 acts, is a rotation of the support roller 16 and the Additional support roller 17 is not required. Because in this case can For example, the support roller 16 seen in the strand guide direction x above the guide roller 2, while the additional support roller 17 is disposed below the guide roller 2.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Rolls And Other Rotary Bodies (AREA)
  • Paper (AREA)
EP99103619A 1998-03-09 1999-02-25 Führungselement einer Stranggiessanlage Expired - Lifetime EP0941787B1 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19809811 1998-03-09
DE19809811 1998-03-09
DE19841841 1998-09-12
DE19841841A DE19841841C2 (de) 1998-03-09 1998-09-12 Führungselement einer Stranggießanlage

Publications (2)

Publication Number Publication Date
EP0941787A1 EP0941787A1 (de) 1999-09-15
EP0941787B1 true EP0941787B1 (de) 2005-09-28

Family

ID=26044434

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99103619A Expired - Lifetime EP0941787B1 (de) 1998-03-09 1999-02-25 Führungselement einer Stranggiessanlage

Country Status (4)

Country Link
EP (1) EP0941787B1 (ja)
JP (1) JPH11314143A (ja)
AT (1) ATE305348T1 (ja)
DE (1) DE59912592D1 (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007045201A1 (de) 2007-08-04 2009-02-05 Sms Demag Ag Verfahren und Vorrichtung zum Ausgleich von Rollenverschleiß bei Stranggießanlagen

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10040271A1 (de) 2000-08-17 2002-02-28 Sms Demag Ag Vorrichtung zum Stranggießen von Metallen, insbesondere von Stahl
KR100596474B1 (ko) 2004-09-07 2006-07-03 주식회사 포스코 연속주조기의 구동롤 받침 프레임
AT506549B1 (de) * 2008-03-28 2011-06-15 Siemens Vai Metals Tech Gmbh Strangführungssegment
AT506824B1 (de) * 2008-05-26 2013-01-15 Siemens Vai Metals Tech Gmbh Mehrstrang-stranggiessanlage

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH591296A5 (ja) * 1975-05-30 1977-09-15 Escher Wyss Ag
JPS59113963A (ja) * 1982-12-21 1984-06-30 Kawasaki Steel Corp 連続鋳造鋳片支持装置
DE3627991A1 (de) * 1986-08-18 1988-02-25 Mannesmann Ag Verfahren zum stranggiessen von brammen und einrichtung zur durchfuehrung des verfahrens
JPS63273504A (ja) * 1987-05-01 1988-11-10 Sumitomo Metal Ind Ltd クラウン調整ロ−ル
JP2545300B2 (ja) * 1990-11-19 1996-10-16 宇部興産株式会社 圧延機
CA2095831C (en) * 1991-09-10 1996-03-05 Shigeru Ogawa Rolling mill for flat products
BR9304173A (pt) * 1993-10-07 1995-06-06 Mitsubishi Heavy Ind Ltd Laminador
DE4403046C1 (de) * 1994-01-28 1995-08-17 Mannesmann Ag Rolle für ein Strangführungsgerüst
AT402267B (de) * 1995-04-25 1997-03-25 Voest Alpine Ind Anlagen Verfahren zum herstellen eines stranges in form eines metallbandes sowie einrichtung zur durchführung des verfahrens

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007045201A1 (de) 2007-08-04 2009-02-05 Sms Demag Ag Verfahren und Vorrichtung zum Ausgleich von Rollenverschleiß bei Stranggießanlagen

Also Published As

Publication number Publication date
EP0941787A1 (de) 1999-09-15
ATE305348T1 (de) 2005-10-15
DE59912592D1 (de) 2006-02-09
JPH11314143A (ja) 1999-11-16

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