EP1249288A2 - Procédé et dispositif de commande des forces motrices dans les installations de coulée continue - Google Patents

Procédé et dispositif de commande des forces motrices dans les installations de coulée continue Download PDF

Info

Publication number
EP1249288A2
EP1249288A2 EP02006261A EP02006261A EP1249288A2 EP 1249288 A2 EP1249288 A2 EP 1249288A2 EP 02006261 A EP02006261 A EP 02006261A EP 02006261 A EP02006261 A EP 02006261A EP 1249288 A2 EP1249288 A2 EP 1249288A2
Authority
EP
European Patent Office
Prior art keywords
strand
forces
force
driving force
maximum permissible
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.)
Granted
Application number
EP02006261A
Other languages
German (de)
English (en)
Other versions
EP1249288A3 (fr
EP1249288B1 (fr
Inventor
Winfried Binder
Axel Weyer
Hans-Peter Kaiser
Wolfgang Schmitz
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
Application filed by SMS Demag AG filed Critical SMS Demag AG
Publication of EP1249288A2 publication Critical patent/EP1249288A2/fr
Publication of EP1249288A3 publication Critical patent/EP1249288A3/fr
Application granted granted Critical
Publication of EP1249288B1 publication Critical patent/EP1249288B1/fr
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

Definitions

  • the invention relates to a method for controlling the driving forces of strand guide segments when a cast strand is conveyed out of a continuous caster, and a suitable device and its use.
  • the strands produced are from the mold to supported and guided at least for solidification in a roller corset. Separate Rolls within or behind this strand guide section become Overcoming the pull-out resistance which the strand passes through on its way the roller guide is driven.
  • the performance of these drives will generally dimensioned so that, on the one hand, in every conceivable operating situation a safe discharge of the strand is guaranteed, but on the other hand the Manufacturing costs are kept as low as possible and the drives are not unnecessarily oversized become.
  • Knowing the upcoming pull-out force, usually to overcome the pull-out resistance is required can be used for the evaluation of the operational Processes of a continuous caster are used.
  • DE 29 23 900 C2 describes a method for preventing breakthroughs of the strand in continuous casting plants known, with changes in the strand and the operating parameters of the continuous caster and measured with a limit value be compared, whereupon a signal for a countermeasure is exceeded is produced.
  • Below the mold are the first segment of the strand guide the force changes in the pull-out forces caused by mechanical resistance measured and for a change in the casting process or its Termination used. The changes in force are measured using pressure cells or strain gauges.
  • the present invention is based on the object, changes in Detecting and analyzing the driving forces of strand drives at an early stage determine their causes and take measures for a forward-looking, timely protection of the system against excessive wear resulting in a prolonged failure, for which in particular that occurring in the casting direction mechanical resistance of the segments against the driving forces shall be.
  • the problem is solved with a method for controlling the driving forces of strand guide segments when a cast strand is conveyed out of a Continuous caster with the invention proposed that a maximum allowable Driving force for conveying the strand is specified, and that single driving forces measured a number of segments, the sum of the individual forces are calculated, compared with the maximum permissible driving force, and if they are exceeded, the system is shut down or switched off becomes.
  • the maximum is the maximum permissible driving force permissible phase resistance and under the individual driving force the individual resistance Roger that.
  • the force measurement for example, initially using pressure cells is carried out without strand in the caster and subsequently during of the foundry, further measurements are made, the Differences in the force measurements indicate the existing pull-out forces.
  • a method according to the invention is further characterized by its use to determine the maximum permissible individual or total driving forces and checking the specified operating parameters.
  • the invention provides that for an individual Segment the maximum permissible driving force and with the current driving force until the maximum permissible driving force (resistance) is controlled. In addition, increases in driving force are prevented by the system.
  • the maximum permissible driving force is specified with the current driving force compared and if they are exceeded, this is reduced until they at least match.
  • a device for controlling the driving forces of strand guide segments when conveying a cast strand from a continuous caster, in particular for carrying out the method according to the invention is characterized in that that to detect the driving forces of a segment on or in the consoles of the load cell segment (pressure or load cells) or inclinometer are arranged, which are supported on support bearings of the strand guide frame.
  • the use of the device according to the invention is particularly suitable for optimal format setting of the cast product or for optimal setting of the Roller conveyors, to prevent deformation on the strand guide frame and / or on the segment due to overload, further to limit the maximum Driving force of string drives and for monitoring the state of the Strand guide.
  • Figures 1 and 2 show the cast strand 1, which by the rollers 2 with their bearings 3 according to FIG. 1 in a vertical plane, and according to Fig. 2 is performed in a horizontal plane.
  • the bearings 3 of the rollers 2 are attached to frames 4 and 5, which in turn are support with brackets 6 on the outer supporting structures 8 of the scaffolding.
  • Load cells 7 are arranged between the supports 6 and 8, which record the contact force of the segments directly and precisely.
  • the contact force of the segments can be caused by deformation of the support brackets 6, 8, for example by means of inclinometers 9.
  • the pull-out force of the strand 1 in the casting direction is the strand guide segments on a number of support points of the device broadcast directly.
  • a total force is generated corresponding to the sections the strand guide segments, being in the area of vertical guidance the pull-out force of a strand guide element in the casting direction according to FIG. 1 works, whereas in the case of sheet continuous casting plants, a corresponding angle in the further evaluation and arrangement of the measuring technology is to be considered.
  • the measurement method used is subject to the requirements of Strand guide segments installed a force measurement or an inclination measurement.
  • the force measurement with the pressure load cells is on the corresponding Construction units made immediately. It is without force shunts installed between the contact surfaces.
  • the measurement can be taken on all four Points can be done, but it can also be on two or even one Limit point.
  • the conversion of the measured variable can be done accordingly the geometric conditions or the position of the main force axis be converted accordingly.
  • the measurements are initially carried out without load, i.e. without casting strand in the casting plant carried out. During the casting operation there will be more Measurements made. The difference in the force measurements then give the upcoming pull-out forces.
  • an inclination measurement is made, for example, using an inclinometer on the substructure of the support points of the strand guide segments performed.
  • the inclination measurement gives the deformation of the substructure depending on the forthcoming discharge force.
  • the measurement of Normal inclination takes place during the casting break, i.e. without hot strand in the continuous caster. Measurements in the casting shop are used to determine the pull-out force used.
  • the inclination values are converted into a pull-out force with corresponding design-dependent conversion factors.
  • the invention is particularly suitable for monitoring the pull-out forces in the casting operation.
  • the invention enables active machine protection in the event of overload, e.g. if the strand shell breaks. With the help of the invention Monitoring the pull-out forces protects the system from destruction.
  • the String drives can be limited in their performance. A specified maximum force the strand guide elements are monitored and switches in the further Control logic automatically switches off the line drives during the start-up process. All in all can with the help of the monitoring method according to the invention the design criteria the continuous casting system is checked during operation and at any time become.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Breeding Of Plants And Reproduction By Means Of Culturing (AREA)
EP02006261A 2001-04-11 2002-03-20 Procédé de commande des forces motrices dans les installations de coulée continue Expired - Lifetime EP1249288B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10118097A DE10118097A1 (de) 2001-04-11 2001-04-11 Verfahren und Vorrichtung zur Kontrolle der Antriebskräfte bei Stranggießanlagen
DE10118097 2001-04-11

Publications (3)

Publication Number Publication Date
EP1249288A2 true EP1249288A2 (fr) 2002-10-16
EP1249288A3 EP1249288A3 (fr) 2002-12-18
EP1249288B1 EP1249288B1 (fr) 2004-10-06

Family

ID=7681239

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02006261A Expired - Lifetime EP1249288B1 (fr) 2001-04-11 2002-03-20 Procédé de commande des forces motrices dans les installations de coulée continue

Country Status (3)

Country Link
EP (1) EP1249288B1 (fr)
AT (1) ATE278491T1 (fr)
DE (2) DE10118097A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009089895A1 (fr) * 2008-01-18 2009-07-23 Sms Siemag Ag Surveillance de la surcharge d'éléments de corset de guidage

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2923900A1 (de) * 1979-06-13 1981-02-05 Hoesch Estel Werke Ag Verfahren zum verhindern von durchbruechen des strangs in stranggiessanlagen
JPH03254343A (ja) * 1990-03-05 1991-11-13 Nisshin Steel Co Ltd 連続鋳造機におけるバルジング量の測定方法及びバルジングの抑制方法
EP1125657A2 (fr) * 2000-02-19 2001-08-22 SMS Demag AG Procédé et dispositif pour la coulée d'ébauches dans une machine de coulée continue
EP1193007A1 (fr) * 2000-09-13 2002-04-03 SMS Demag AG Procédé et dispositif pour déterminer la position du cratère liquide dans un lingot coulé pendant la coulée continue de métaux, en particulier de l'acier

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2923900A1 (de) * 1979-06-13 1981-02-05 Hoesch Estel Werke Ag Verfahren zum verhindern von durchbruechen des strangs in stranggiessanlagen
JPH03254343A (ja) * 1990-03-05 1991-11-13 Nisshin Steel Co Ltd 連続鋳造機におけるバルジング量の測定方法及びバルジングの抑制方法
EP1125657A2 (fr) * 2000-02-19 2001-08-22 SMS Demag AG Procédé et dispositif pour la coulée d'ébauches dans une machine de coulée continue
EP1193007A1 (fr) * 2000-09-13 2002-04-03 SMS Demag AG Procédé et dispositif pour déterminer la position du cratère liquide dans un lingot coulé pendant la coulée continue de métaux, en particulier de l'acier

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Section Ch, Week 197729 Derwent Publications Ltd., London, GB; Class M22, AN 1977-51563Y XP002216576 & SU 538 811 A (KUROEDOV V D), 6. Januar 1976 (1976-01-06) *
PATENT ABSTRACTS OF JAPAN vol. 016, no. 057 (M-1210), 13. Februar 1992 (1992-02-13) -& JP 03 254343 A (NISSHIN STEEL CO LTD), 13. November 1991 (1991-11-13) *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009089895A1 (fr) * 2008-01-18 2009-07-23 Sms Siemag Ag Surveillance de la surcharge d'éléments de corset de guidage

Also Published As

Publication number Publication date
ATE278491T1 (de) 2004-10-15
DE50201188D1 (de) 2004-11-11
EP1249288A3 (fr) 2002-12-18
EP1249288B1 (fr) 2004-10-06
DE10118097A1 (de) 2002-10-17

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