EP0044291A1 - Dispositif pour déterminer les forces de frottement entre la lingotière et le lingot dans une installation de coulée continue - Google Patents

Dispositif pour déterminer les forces de frottement entre la lingotière et le lingot dans une installation de coulée continue Download PDF

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Publication number
EP0044291A1
EP0044291A1 EP19810890115 EP81890115A EP0044291A1 EP 0044291 A1 EP0044291 A1 EP 0044291A1 EP 19810890115 EP19810890115 EP 19810890115 EP 81890115 A EP81890115 A EP 81890115A EP 0044291 A1 EP0044291 A1 EP 0044291A1
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EP
European Patent Office
Prior art keywords
mold
side walls
water tank
continuous casting
accelerometer
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
EP19810890115
Other languages
German (de)
English (en)
Other versions
EP0044291B1 (fr
Inventor
Reinhard Hargassner
Reinhold Dr. Angerer
Hans Weberberger
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.)
Voestalpine AG
Original Assignee
Voestalpine AG
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Filing date
Publication date
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=3553026&utm_source=***_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0044291(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Voestalpine AG filed Critical Voestalpine AG
Publication of EP0044291A1 publication Critical patent/EP0044291A1/fr
Application granted granted Critical
Publication of EP0044291B1 publication Critical patent/EP0044291B1/fr
Expired legal-status Critical Current

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    • 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
    • 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
    • B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds
    • B22D11/05—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds into moulds having adjustable walls
    • 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
    • B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds
    • B22D11/053—Means for oscillating the moulds
    • 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 device on an oscillating continuous casting mold, in particular a steel slab continuous casting mold, for determining the frictional forces prevailing between the side walls of the mold and the strand surface.
  • the invention has for its object to provide a device of the type described in the introduction, which makes it possible to display "pan hangers” immediately and to give a reliable warning of metal melt leakage, etc. regardless of subjective influences.
  • the mold is connected to an acceleration sensor and a force measuring device for measuring the forces transmitted from the mold to the support is provided on the support of the mold, and that the acceleration sensor and the force measuring devices are connected by an electrical subtraction circuit.
  • the force measuring device is designed as a pressure load cell provided between the mold side walls and the water box of the mold.
  • the load cells are expediently arranged below the broad side walls on a support plate which engages underneath the broad side walls and is rigidly fastened to the water tank.
  • the pressure load cells are expediently arranged in the areas adjacent to the narrow side walls below the broad side walls.
  • the mold side walls in particular the wide side walls, are advantageously fastened to the water tank in a vertically displaceable manner.
  • a mold side wall in particular a wide side wall, is expediently connected to the water tank by means of articulated rods which are articulated both to the water tank and to the mold side wall, two mutually opposite mold side walls, in particular wide side walls, advantageously being connected to one another by means of bolts which are articulated on the mold side walls are.
  • each pressure transducer is connected to an adding device which sums the values of the pressure transducers, that the adding device is followed by a taring device which subtracts the dead weight of the mold side walls, and that a sub-value rectifier follows the subtracting device which subtracts the values of the accelerometer is provided, the output signal of which is fed to a display device.
  • each pressure transducer is advantageously connected to its own adjustable subtractor, each subtractor has its own peak value rectifier and the output signals of each peak value rectifier are each fed to a separate display device.
  • a further embodiment in which the side walls of the mold are supported on a water box and the water box is coupled to an oscillating drive by means of an oscillating lever, is characterized in that the force measuring device is designed as a strain gauge attached to the oscillating levers.
  • FIG. 1 showing a plan view of a mold
  • FIG. 2 showing a section along the line II-II in FIG. 1.
  • 3 and 4 illustrate two different circuit diagrams for the device according to the invention according to FIGS. 1 and 2.
  • FIG. 5 a further embodiment is shown in side view;
  • Fig. 6 2 inclines the associated circuit diagram.
  • the four mold side walls 2 to 5 delimiting a rectangular interior space 1, etc. the wide side walls 2, 3 and the narrow side walls 4, 5 are used within a water box 6 surrounding these side walls in a frame-like manner.
  • the water tank 6 is hollow.
  • the two broad side walls 2, 3 are connected to one another by means of bolts 11, 12.
  • Each of these bolts 11, 12 is articulated on the broad side wall 2 forming the fixed side by means of a ball joint 13 and connected by means of a further ball joint 14 to a piston 16 which is displaceably guided in a spring cup 15.
  • the bolts 11, 12 could also be rigidly connected to the side walls 2, 3; in this case, however, an elastic deflection of the bolts 11, 12 would have to be accepted when the side walls 2, 3 were moved vertically.
  • the spring cup 15 has the task of pressing the two broad side walls 2, 3 towards one another in order to withstand the ferrostatic pressure of the melt poured into the interior 1.
  • the narrow side walls 4, 5 are supported on the broad side walls 2, 3 by means of support strips 17 arranged on their upper sides.
  • the narrow side walls 4, 5 can be adjusted to the desired strand width in each case by means of adjusting spindles 19 articulated on them by means of joints 18.
  • adjusting means for example pressure medium cylinders 20.
  • the bolts 11, 12 are adjusted relative to the ball joint 13 in their longitudinal direction.
  • the narrow and broad side walls 2 to 5 are hollow and are connected in line with the cavity 22 of the water box 6 via cooling water supply and cooling water discharge pipes 21.
  • These tubes 21 are designed as telescopic tubes for the adjustable side walls. To the necessary compared to the water tank. not to hinder vertical mobility of the mold side walls, the tubes 21 are designed so that they allow movement of the mold side walls 2 to 5 in the vertical direction.
  • 3 casters 23 are fastened by means of brackets 24.
  • the underside of the water tank 6 has a support plate 25 which extends below the broad side walls 2, 3 and on which the broad side walls 2, 3 are supported by pressure transducers 26.
  • the pressure cells 26 are inserted into recesses 27 provided on the underside of the broad side walls and screwed onto the cover plates 28 which delimit the recesses 27 upwards.
  • the pressure cells are also screwed to the support plate 25 of the water tank 6, the pressure cells 26 provided on the wide side wall 3 forming the loose side being displaceable in longitudinal slots 29 of this support plate 25.
  • a total of four pressure transducers 26 are provided, the pressure transducers each being arranged in the regions adjacent to the narrow side walls 4, 5 below the broad side walls 2, 3.
  • An acceleration sensor 31 is attached to a side wall 30 of the water tank 6.
  • a line 32 leads from each of the four load cells 26 to an adding device 33, which is followed by a taring device 34.
  • the tare device 34 subtracts the static dead weight of the mold side walls from the sum of the measured values of the four pressure transducers 26.
  • the downstream subtractor device 35 the dynamic mass force of the mold, determined by the accelerometer 31 and amplified in an amplifier 36, is subtracted.
  • a peak value rectifier 37 the output signal of which is passed on to a display device 38 or to an alarm device 39.
  • a display device 40 for the instantaneous value is connected to the line 41 provided between the subtracting device 35 and the rectifier 37.
  • the function of the device is as follows: If a frictional force occurs between the strand shell and the copper plates 42 of the mold side walls 2 to 5, the side walls are pressed down more or less, depending on whether the mold moves straight down or up during the oscillation. As a result, the load cells 26 are loaded to a greater or lesser extent and the mold side walls 2 to 5 are displaced in a vertical direction with respect to the water tank 6 in a vertical direction, in accordance with the flexibility of the pressure load cells 26. The values detected by the four pressure transducers 26 are added, the static dead weight is subtracted from this total value in the tare device 34 and the acceleration force is subtracted from this value in the subtractor 35.
  • the device according to the invention provides valuable information about the state of the strand-mold interfaces, since the measurement signal always corresponds to the true frictional force.
  • adjustable subtracting devices 35 ' are used which compensate for a different load-bearing behavior of the pressure load cells 26.
  • a separate peak value rectifier 37 is connected to each subtractor 35 '.
  • the alarm device 39 is designed such that a signal is given when the display of an individual pressure cell 26 already shows a given one as permissible recognized value exceeds. On the display devices. 3.8 it can be determined from which pressure transducer 26 a measured value which is above the permissible value comes, so that the location of a "shell hanger" can be approximately determined.
  • the water tank 6 ' in which the mold side walls 2.', 3 'are inserted, is raised by means of oscillating levers 43, 44 (located one behind the other in FIG. 5) of the lifting table 6 "
  • the oscillating levers 43, 44 are connected to an oscillating drive 48 via coupling rods 45, 46 and a lever 47.
  • the stationary support frame on which the oscillating lever is mounted is designated by 49.
  • Strain gauges 50, 51 are bonded to each of the oscillating levers 43, 44 and determine the elongation of these levers as a result of deflection. Since the deflection of the levers 43, 44 is only slight due to the frictional forces acting on the strand-mold side wall interfaces, a strain gauge 50 is glued in the longitudinal direction and one (51) in the transverse direction to increase the sensitivity on both levers 43, 44.
  • the measurement signal is registered on a recorder 52, the signal pulsating through the oscillation being amplified beforehand by means of a carrier frequency measuring amplifier 53 and rectified by means of a rectifier 54.
  • the pure acceleration forces acting on the mold which are also detected by the strain gauges 50, 51 and which are necessary to move the mass of the mold up and down at the oscillation frequency, are subtracted. This is done by detecting the mass forces of the mold by means of the acceleration sensor 31 and subtracting it the signals determined by the acceleration sensor 31 from the signal of the strain gauges.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Force Measurement Appropriate To Specific Purposes (AREA)
EP19810890115 1980-07-11 1981-07-07 Dispositif pour déterminer les forces de frottement entre la lingotière et le lingot dans une installation de coulée continue Expired EP0044291B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT361980A AT366607B (de) 1980-07-11 1980-07-11 Einrichtung an einer oszillierenden stranggiess- kokille
AT3619/80 1980-07-11

Publications (2)

Publication Number Publication Date
EP0044291A1 true EP0044291A1 (fr) 1982-01-20
EP0044291B1 EP0044291B1 (fr) 1984-04-11

Family

ID=3553026

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19810890115 Expired EP0044291B1 (fr) 1980-07-11 1981-07-07 Dispositif pour déterminer les forces de frottement entre la lingotière et le lingot dans une installation de coulée continue

Country Status (4)

Country Link
EP (1) EP0044291B1 (fr)
JP (1) JPS5747563A (fr)
AT (1) AT366607B (fr)
DE (1) DE3163116D1 (fr)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2539063A1 (fr) * 1983-01-07 1984-07-13 Kloeckner Werke Ag Procede avertisseur de rupture dans une installation de coulee continue et dispositif pour la mise en oeuvre du procede
EP0124362A1 (fr) * 1983-04-28 1984-11-07 Uss Engineers And Consultants, Inc. Système d'indication de la charge d'une installation d'oscillations d'une lingotière à coulée continue
FR2593098A1 (fr) * 1986-01-17 1987-07-24 Fives Cail Babcock Perfectionnements aux machines de coulee continue.
DE3632333A1 (de) * 1986-09-24 1988-03-31 Voest Alpine Ag Vorrichtung zum ueberwachen der schwingungen einer stranggiesskokille
US4762164A (en) * 1987-08-20 1988-08-09 Usx Corporation Mold friction monitoring for breakout protection
EP0312889A2 (fr) * 1987-10-23 1989-04-26 Thyssen Stahl Aktiengesellschaft Lingotière pour la coulée continue
WO1990013375A1 (fr) * 1989-05-11 1990-11-15 Contech Hb Procede et moyens de contrôle de coulee continue
WO1994005449A1 (fr) * 1992-09-02 1994-03-17 Concast Standard Ag Dispositif pour mesurer la force de frottement dans une coquille de coulee continue
DE19515316C1 (de) * 1995-04-19 1996-08-29 Mannesmann Ag Verfahren zum Betreiben einer Kokille
EP1043096A1 (fr) * 1999-04-03 2000-10-11 Sms Schloemann-Siemag Aktiengesellschaft Procédé pour déterminer les forces de frottement entre la lingotière et le lingot dans une installation de coulée continue
CN100430712C (zh) * 2005-11-29 2008-11-05 天津理工大学 结晶器拉坯阻力检测装置

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1212748B (it) * 1983-06-03 1989-11-30 Ates Componenti Elettron Stadio differenziale perfezionato, in particolare per filtri attivi.
AT379335B (de) * 1984-05-10 1985-12-27 Voest Alpine Ag Einrichtung an einer stranggiessanlage mit einer an einem ortsfesten stuetzgeruest aufgehaengten oder abgestuetzten oszillierenden stranggiesskokille

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1259300A (fr) * 1959-06-11 1961-04-21 Head Procédé et dispositif de coulée continue
FR1583107A (fr) * 1968-08-07 1969-10-17
GB1556616A (en) * 1976-06-18 1979-11-28 British Steel Corp Steelmaking

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1259300A (fr) * 1959-06-11 1961-04-21 Head Procédé et dispositif de coulée continue
FR1583107A (fr) * 1968-08-07 1969-10-17
GB1556616A (en) * 1976-06-18 1979-11-28 British Steel Corp Steelmaking

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2539063A1 (fr) * 1983-01-07 1984-07-13 Kloeckner Werke Ag Procede avertisseur de rupture dans une installation de coulee continue et dispositif pour la mise en oeuvre du procede
EP0124362A1 (fr) * 1983-04-28 1984-11-07 Uss Engineers And Consultants, Inc. Système d'indication de la charge d'une installation d'oscillations d'une lingotière à coulée continue
FR2593098A1 (fr) * 1986-01-17 1987-07-24 Fives Cail Babcock Perfectionnements aux machines de coulee continue.
EP0233796A1 (fr) * 1986-01-17 1987-08-26 FIVES-CAIL BABCOCK, Société Anonyme Perfectionnements aux machines de coulée continue
DE3632333A1 (de) * 1986-09-24 1988-03-31 Voest Alpine Ag Vorrichtung zum ueberwachen der schwingungen einer stranggiesskokille
US4762164A (en) * 1987-08-20 1988-08-09 Usx Corporation Mold friction monitoring for breakout protection
WO1989001371A1 (fr) * 1987-08-20 1989-02-23 Usx Engineers And Consultants, Inc. Controle des frictions auxquelles les moules sont soumis pour eviter les percees
EP0312889A3 (en) * 1987-10-23 1989-12-06 Thyssen Stahl Aktiengesellschaft Mould for continuous casting
EP0312889A2 (fr) * 1987-10-23 1989-04-26 Thyssen Stahl Aktiengesellschaft Lingotière pour la coulée continue
WO1990013375A1 (fr) * 1989-05-11 1990-11-15 Contech Hb Procede et moyens de contrôle de coulee continue
WO1994005449A1 (fr) * 1992-09-02 1994-03-17 Concast Standard Ag Dispositif pour mesurer la force de frottement dans une coquille de coulee continue
DE19515316C1 (de) * 1995-04-19 1996-08-29 Mannesmann Ag Verfahren zum Betreiben einer Kokille
WO1996033035A1 (fr) * 1995-04-19 1996-10-24 Mannesmann Ag Procede permettant d'actionner une coquille entrainee par oscillations et dispositif de coulee continue pour mettre ledit procede en ×uvre
CN1072066C (zh) * 1995-04-19 2001-10-03 曼内斯曼股份公司 运行结晶器的方法和连铸设备
EP1043096A1 (fr) * 1999-04-03 2000-10-11 Sms Schloemann-Siemag Aktiengesellschaft Procédé pour déterminer les forces de frottement entre la lingotière et le lingot dans une installation de coulée continue
CN100430712C (zh) * 2005-11-29 2008-11-05 天津理工大学 结晶器拉坯阻力检测装置

Also Published As

Publication number Publication date
EP0044291B1 (fr) 1984-04-11
AT366607B (de) 1982-04-26
ATA361980A (de) 1981-09-15
DE3163116D1 (en) 1984-05-17
JPS5747563A (en) 1982-03-18

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