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EP3706933B1 - Segment de guidage de barre et installation de coulée continue - Google Patents

Segment de guidage de barre et installation de coulée continue Download PDF

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Publication number
EP3706933B1
EP3706933B1 EP18782390.1A EP18782390A EP3706933B1 EP 3706933 B1 EP3706933 B1 EP 3706933B1 EP 18782390 A EP18782390 A EP 18782390A EP 3706933 B1 EP3706933 B1 EP 3706933B1
Authority
EP
European Patent Office
Prior art keywords
guide segment
hydraulic cylinder
upper frame
strand guide
strip guide
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.)
Active
Application number
EP18782390.1A
Other languages
German (de)
English (en)
Other versions
EP3706933A1 (fr
Inventor
Axel Stavenow
Alexander Raile
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 Group GmbH
Original Assignee
SMS Group GmbH
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 Group GmbH filed Critical SMS Group GmbH
Publication of EP3706933A1 publication Critical patent/EP3706933A1/fr
Application granted granted Critical
Publication of EP3706933B1 publication Critical patent/EP3706933B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B22D11/12—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
    • 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
    • B22D11/1206—Accessories for subsequent treating or working cast stock in situ for plastic shaping of strands
    • 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 present invention relates to a strand guide segment for a continuous caster according to the preamble of independent claim 1.
  • the invention also relates to a continuous caster according to claim 10.
  • the liquid metal is first introduced into a mold and then guided as a strand in partially solidified form through a strand guide, also called a support roller frame, with rollers.
  • a strand guide also called a support roller frame
  • each strand guide segment having an upper frame and a lower frame opposite this, which carry strand-guiding rollers and the distance between them can be adjusted to the casting format via tie rods and spacers.
  • the upper frame and the lower frame of a respective strand guide segment are clamped against one another by four hydraulic cylinder units which are arranged at the outer corners outside the strand path and connect the upper frame and the lower frame to one another.
  • a strand guide with strand guide segments is known in which the respective upper frame and lower frame are connected to one another via hydraulic cylinder units and can be adjusted against one another in a controlled manner.
  • the hydraulic cylinder units are mounted to be journalled on the upper frame and the lower frame.
  • the upper frame and the lower frame For maintenance purposes on such strand guide segments, the upper frame and the lower frame must be separated or decoupled from one another. For this purpose, the respective bearings of the hydraulic cylinder units on the upper frame or the lower frame must be opened. So that such a storage can be opened easily, a sufficiently large clearance must be provided for it.
  • a sufficiently large clearance must be provided for it.
  • such a realization has a disadvantageous effect on the accuracy of the strand thickness set by the strand guide segment. Large deviations can therefore occur between the strand thickness actually set by the strand guide segment and the desired strand thickness.
  • a strand guide segment with two hydraulic cylinder units for setting a distance between the upper frame and the lower frame is known, the hydraulic cylinder units being detachably connected to the upper frame by means of a flange device.
  • the frames are connected to one another by a separate hydraulic clamping device.
  • the EP0 030 223 A2 discloses a support and guide frame for a continuous caster, with an upper supporting structure which is releasably attached to the lower supporting structure by means of a pressure medium cylinder attached to it via a tie rod and a strut.
  • the present invention is therefore based on the object of providing an alternative strand guide segment for a continuous caster which ensures simple maintenance and at the same time great accuracy of the strand thickness set by the strand guide segment.
  • the present invention is intended to provide a continuous caster which can be easily maintained and ensures a high level of accuracy of the strand thickness each set by its strand guide segments.
  • the strand guide segment presented for a continuous caster for metals, in particular steel materials has an upper frame and a lower frame, which during a casting operation of the continuous caster position-controlled hydraulic cylinder units are connected to one another.
  • the Hydraulic cylinder units are arranged and designed to set a distance between the upper frame and the lower frame, the set distance specifying or setting a strand thickness of a strand to be guided through the strand guide segment.
  • Each hydraulic cylinder unit has a piston rod which can be extended or retracted in a position-controlled manner by means of an applied hydraulic pressure in order to increase or decrease the distance between the upper frame and the lower frame.
  • the strand guide segment presented preferably has two pairs of hydraulic cylinder units which are arranged on both sides and outside the strand path of the strand guide segment.
  • the strand guide segment preferably has a side frame on both sides of the strand path, which allow a guided movement of the upper frame and the lower frame relative to one another in response to deflections or changes in length of the hydraulic cylinder units.
  • a first end of each of the hydraulic cylinder units is supported on the upper frame.
  • each of the hydraulic cylinder units, specifically its piston rod is detachably connected to a respective pull rod at its second end facing away from the upper frame by means of a respective flange device.
  • the tie rods are mounted on the subframe at their end facing away from the flange device.
  • Each hydraulic cylinder unit is preferably rigidly connected to the respective pull rod by means of the respective flange device.
  • Changes in length of the hydraulic cylinder units mounted on the upper frame, brought about by position control, are converted into a corresponding change in the distance between the upper frame and the lower frame via the tie rods mounted on the lower frame.
  • the tie rods are preferably designed so that they cannot be changed in length.
  • the provision of the flange devices, via which a respective hydraulic cylinder unit or its piston rod is detachably connected to a respective pull rod, enables simple separation of the upper frame and Lower frame without having to open the bearings of the hydraulic cylinder units on the upper frame.
  • the bearings of the hydraulic cylinder units do not need to be provided with a large amount of play.
  • the bearings can therefore be designed with little play, so that the strand guide segment presented ensures a high level of precision for the strand thickness set.
  • the hydraulic cylinder units in particular their piston rods, are screwed to the respective tie rods via the respective flange devices.
  • the screw connections enable the hydraulic cylinder devices to be easily loosened from the tie rods, equivalent to a simple separation of the upper frame from the lower frame, during maintenance and, at the same time, a very high tensile strength connection between the hydraulic cylinder devices and the tie rods during the casting operation.
  • the tie rods are releasably connected to their respective flange device.
  • the hydraulic cylinder units are releasably connected to the respective flange device. If a respective flange connection is detachably connected both to the respective tie rod and to the respective hydraulic cylinder unit, the flange connection can be removed particularly easily during maintenance work and checked for wear. It can also be provided that the respective flange device is thermally shrunk onto the respective hydraulic cylinder unit, in particular on its piston rod, and this flange device is screwed to the respective pull rod.
  • the flange device is firmly connected to one of the group consisting of the hydraulic cylinder unit and the pull rod, and the flange device to the other of the Group of the hydraulic cylinder unit and the pull rod releasably connected, in particular screwed, is.
  • the hydraulic cylinder units are mounted on bolts on the upper frame by means of pivot bearings.
  • the hydraulic cylinder units are supported with particularly little play, so that the strand guide segment presented ensures a high level of precision in the set strand thickness due to the low-play connection of the upper frame to the lower frame.
  • the tie rods are mounted on bolts on the subframe by means of pivot bearings.
  • the tie rods are supported with particularly little play, so that the strand guide segment presented ensures a high level of precision in the set strand thickness due to the low-play connection of the lower frame to the upper frame.
  • Both the hydraulic cylinder units and the tie rods are preferably mounted on their associated frame by means of pivot bearings on bolts.
  • the strand guide segment presented ensures a particularly high level of precision for the strand thickness set.
  • the hydraulic cylinder units and / or the tie rods are each clamped with split bearing shells and a split bearing block in their associated frame.
  • a connection of the upper frame to the lower frame with little play is achieved, so that the strand guide segment presented enables high precision of the set strand thickness.
  • the hydraulic cylinder units and / or the tie rods can be detached from the upper frame or lower frame for maintenance and repair purposes without great technical effort.
  • the hydraulic cylinder units each have a bearing block at their first end, for example in the form that the first end of a respective hydraulic cylinder unit is designed as a bearing block for one of the above-mentioned bolts.
  • a position measurement sensor is mounted on the side of this bearing block, which measures the deflection of the piston rod of a respective hydraulic cylinder unit and generates a corresponding measurement signal for forwarding to a controller for position control or strand thickness control. Because the position measurement sensors are mounted on the side of the upper bearing blocks of the hydraulic cylinder units, the sensors in the continuous caster can be easily serviced without dismantling the strand guide segment.
  • the object of the present invention is also achieved by a continuous casting plant, the strand guide of which has at least one of the strand guide segments presented above.
  • the entire strand guide is preferably composed of several of the strand guide segments presented.
  • the continuous caster presented enables simple maintenance of the individual strand guide segments and a minimization of deviations between the actual strand thicknesses in the strand guide and the strand thicknesses specified by the position control.
  • the invention encompasses any combination of the strand guide segment presented above and the continuous caster presented above and the respective developments.
  • the strand guide segment 50 has an upper frame 8 and a lower frame 9, the distance between which can be changed along the guide by side frames 20A and 20B.
  • the strand guide segment 50 is designed to guide a strand, in particular made of partially solidified metal, and to adjust the strand thickness of this strand.
  • rollers 21 mounted on the upper frame 8 and rollers 22 mounted on the lower frame 9 are provided, between which the strand is guided, and the distance between the rollers 21 and 22 determining the strand thickness set by the strand guide segment 50.
  • the distance is set by four hydraulic cylinder units 1 with tie rods 2 connected to them, which are arranged at the four outer corners of the strand guide segment 50.
  • the hydraulic cylinder units 1 are detachably connected to the respective tie rod 2 by means of a respective flange device 3.
  • the end of each hydraulic cylinder unit 1 facing the upper frame 8 is a bearing block 11 configured, on which a position measurement sensor 10 is mounted laterally.
  • the bearing block 11 is designed to receive a bolt 5, which in turn is clamped in the upper frame 8 by split bearing shells 6 and a split bearing block 7, which are provided or mounted on the upper frame 8.
  • the bearing block 11 of a respective hydraulic cylinder unit 1 is mounted on the bolt 5 by means of a spherical bearing 4 with little play.
  • Each hydraulic cylinder unit 1 is axially aligned in the direction of the lower frame 9, each hydraulic cylinder unit 1 having a piston rod 1A at its end facing away from the upper frame 2. This piston rod 1A is connected to the flange device 3, which in turn is connected to the pull rod 2.
  • the pull rod 2 is mounted on the subframe 9 at its end facing away from the flange device 3. More precisely, the tie rod 2 is mounted on a bolt 15 at this end by means of a joint bearing 14 with little play. The bolt 15, and thus also the tie rod 2, is clamped in the subframe 9 by means of split bearing shells 16 and a split bearing block 17.
  • FIG. 1 the front left section of the strand guide segment 50 is shown in a simplified perspective sectional view of the hydraulic cylinder unit 1 with its piston rod 1A, the flange device 3, the tie rod 2, the pivot bearings 4, 14, the bolts 5, 15 and the split bearing shells 6, 16.
  • this sectional view is shown in detail in two dimensions.
  • the flange device 3 is non-positively connected to the end section of the piston rod 1A facing away from the upper frame 8.
  • the flange device 3 can have been thermally shrunk onto the end section of the piston rod 1A.
  • the flange device 3 is connected by means of a plurality of screws 12, which are aligned in the axial direction of the piston rod 1A, to the widened end section of the tie rod 2 that faces away from the subframe 9.
  • the Screws 12 establish a rigid connection between the piston rod 1A and the pull rod 2.
  • the screws 12 can be loosened for maintenance work, so that the flange device 3 and thus also the piston rod 1A of the hydraulic cylinder unit 1 can be separated or decoupled from the pull rod 2.
  • the upper frame 8 can be separated from the lower frame 9 during maintenance work without the bearings on the upper frame or lower frame having to be opened.
  • FIG. 11 shows a view of a section along the lines BB in FIG Figure 2A .
  • the position measurement sensor 10 is attached to the side of the bearing block 11 of the hydraulic cylinder unit 1 in the area of the upper frame 8. Therefore, the position measurement sensor 10 can be easily serviced in the continuous casting plant without dismantling the strand guide segment 50.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)

Claims (10)

  1. Segment de guidage de barre (50) qui est destiné à une installation de coulée continue, qui comprend un cadre supérieur (8), un cadre inférieur (9) ainsi que des unités sous la forme de cylindres hydrauliques (1, 1A) dont la position a été contrôlée, qui sont destinés au réglage d'une distance entre le cadre supérieur (8) et le cadre inférieur (9), et par conséquent d'une épaisseur de barre en ce qui concerne une barre qui doit être guidée à travers le segment de guidage de barre (50) ; dans lequel une première extrémité de chacune des unités sous la forme de cylindres hydrauliques (1, 1A) est disposée contre le cadre supérieur (8), caractérisé en ce que chacune des unités sous la forme de cylindres hydrauliques (1, 1A) est reliée de manière amovible, à sa deuxième extrémité qui se détourne du cadre supérieur (8), à une barre de traction respective (2) au moyen d'un dispositif respectif de formation de bride (3), la barre en question étant disposée, à son extrémité qui se détourne du dispositif de formation de bride (3), contre le cadre inférieur (9).
  2. Segment de guidage de barre (50) selon la revendication 1, caractérisé en ce que les unités sous la forme de cylindres hydrauliques (1, 1A) sont vissées aux barres de traction respectives (2) par l'intermédiaire des dispositifs respectifs de formation de brides (3).
  3. Segment de guidage de barre (50) selon la revendication 1 ou 2, caractérisé en ce que les barres de traction (2) sont reliées de manière amovible au dispositif respectif de formation de bride (3).
  4. Segment de guidage de barre (50) selon l'une quelconque des revendications 1 à 3, caractérisé en ce que les unités sous la forme de cylindres hydrauliques (1, 1A) sont reliées de manière amovible au dispositif respectif de formation de bride (3).
  5. Segment de guidage de barre (50) selon l'une quelconque des revendications 1 à 4, caractérisé en ce que les unités sous la forme de cylindres hydrauliques (1, 1A) sont montées au moyen d'articulations à rotules (4) sur des boulons (5) contre le cadre supérieur (8).
  6. Segment de guidage de barre (50) selon l'une quelconque des revendications 1 à 5, caractérisé en ce que les barres de traction (2) sont montées au moyen d'articulations à rotules (14) sur des boulons (15) contre le cadre inférieur (9).
  7. Segment de guidage de barre (50) selon l'une quelconque des revendications 1 à 6, caractérisé en ce que les unités sous la forme de cylindres hydrauliques (1, 1A) sont bloquées respectivement avec des coussinets de paliers (6) scindés en plusieurs parties et avec un bloc de palier (7) scindé en plusieurs parties, dans le cadre supérieur (8).
  8. Segment de guidage de barre (50) selon l'une quelconque des revendications 1 à 7, caractérisé en ce que les barres de traction (2) sont bloquées respectivement avec des coussinets de paliers (16) scindés en plusieurs parties et avec un bloc de palier (17) scindé en plusieurs parties, dans le cadre inférieur (9).
  9. Segment de guidage de barre (50) selon l'une quelconque des revendications 1 à 8, caractérisé en ce que les unités sous la forme de cylindres hydrauliques (1, 1A) présentent, à leur première extrémité, respectivement un bloc de palier (11) sur lequel est monté, en position latérale, un capteur pour la mesure de la position (10).
  10. Installation de coulée continue qui comprend un guidage de barre qui présente au moins un segment de guidage de barre (50) selon l'une quelconque des revendications 1 à 9.
EP18782390.1A 2017-11-07 2018-10-02 Segment de guidage de barre et installation de coulée continue Active EP3706933B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017219740.4A DE102017219740A1 (de) 2017-11-07 2017-11-07 Strangführungssegment und Stranggießanlage
PCT/EP2018/076752 WO2019091664A1 (fr) 2017-11-07 2018-10-02 Segment de guidage de barre et installation de coulée continue

Publications (2)

Publication Number Publication Date
EP3706933A1 EP3706933A1 (fr) 2020-09-16
EP3706933B1 true EP3706933B1 (fr) 2021-12-08

Family

ID=63762508

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18782390.1A Active EP3706933B1 (fr) 2017-11-07 2018-10-02 Segment de guidage de barre et installation de coulée continue

Country Status (5)

Country Link
US (1) US11565309B2 (fr)
EP (1) EP3706933B1 (fr)
DE (1) DE102017219740A1 (fr)
RU (1) RU2741608C1 (fr)
WO (1) WO2019091664A1 (fr)

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1963146C3 (de) 1969-12-17 1974-02-28 Demag Ag, 4100 Duisburg Segmentrahmen für die Stütz- bzw. Transportwalzen einer Metall-, insbesondere Stahlstranggießanlage
AT368049B (de) * 1979-11-28 1982-08-25 Voest Alpine Ag Einrichtung an einem stuetz- und fuehrungsgeruest fuer eine stranggiessanlage
US5115857A (en) 1990-07-18 1992-05-26 Voest-Alpine Industrieanlagenbau G.M.B.H. Strand guide arrangement provided at a continuous casting plant
SU1759539A1 (ru) * 1991-01-22 1992-09-07 Центральный научно-исследовательский институт металлургии и материалов Правильно-т нуща секци машины непрерывного лить заготовок
DE4306853C2 (de) 1993-02-26 1996-03-21 Mannesmann Ag Strangführungsgerüst
DE19824366A1 (de) * 1998-05-30 1999-12-02 Schloemann Siemag Ag Strangführungssegment für Brammengießanlagen
DE102004054296B4 (de) 2004-11-09 2021-11-11 Sms Group Gmbh Steuer- und / oder Regeleinrichtung für ein Stützrollengerüst einer Stranggießvorrichtung für Metalle, insbesondere für Stahlwerkstoffe
DE102005039473A1 (de) * 2005-08-20 2007-02-22 Sms Demag Ag Vorrichtung für ein schnelles Verbinden oder ein schnelles Lösen von zwei grossen, schweren Bauteilen für den Hüttenwerksbetrieb, insbesondere für eine Stahl-Stranggiessmaschine
AT515260B1 (de) * 2013-12-17 2017-12-15 Primetals Technologies Austria GmbH Steuer- oder Regeleinrichtung für ein Stützrollengerüst einer Stranggießmaschine

Also Published As

Publication number Publication date
WO2019091664A1 (fr) 2019-05-16
RU2741608C1 (ru) 2021-01-27
DE102017219740A1 (de) 2019-05-09
EP3706933A1 (fr) 2020-09-16
US20210197251A1 (en) 2021-07-01
US11565309B2 (en) 2023-01-31

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