EP0053274B1 - Method of and installation for the continuous mechanical removal of material form casting strand surfaces - Google Patents

Method of and installation for the continuous mechanical removal of material form casting strand surfaces Download PDF

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Publication number
EP0053274B1
EP0053274B1 EP81108912A EP81108912A EP0053274B1 EP 0053274 B1 EP0053274 B1 EP 0053274B1 EP 81108912 A EP81108912 A EP 81108912A EP 81108912 A EP81108912 A EP 81108912A EP 0053274 B1 EP0053274 B1 EP 0053274B1
Authority
EP
European Patent Office
Prior art keywords
strand
tools
movement direction
removal
suspended
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
Application number
EP81108912A
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German (de)
French (fr)
Other versions
EP0053274A1 (en
Inventor
Horst Ganseuer
Claus Gunther Kolbe
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.)
Siemag GmbH
Original Assignee
Siemag Transplan 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 Siemag Transplan GmbH filed Critical Siemag Transplan GmbH
Priority to AT81108912T priority Critical patent/ATE10913T1/en
Publication of EP0053274A1 publication Critical patent/EP0053274A1/en
Application granted granted Critical
Publication of EP0053274B1 publication Critical patent/EP0053274B1/en
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B27/00—Other grinding machines or devices
    • B24B27/033—Other grinding machines or devices for grinding a surface for cleaning purposes, e.g. for descaling or for grinding off flaws in the surface
    • B24B27/04—Grinding machines or devices in which the grinding tool is supported on a swinging arm
    • 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
    • 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
    • B22D11/126—Accessories for subsequent treating or working cast stock in situ for cutting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B45/00—Devices for surface or other treatment of work, specially 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
    • B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/04—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for de-scaling, e.g. by brushing

Definitions

  • the invention relates to a method and a device for the continuous mechanical removal of material from continuous casting surfaces in the hot state, in which the hot strand prior to cross-cutting with cutting tools moving back and forth between the strand edges, e.g. Grinding wheels, planing knives or milling tools are processed simultaneously on opposite sides, for example on the top and bottom.
  • cutting tools moving back and forth between the strand edges, e.g. Grinding wheels, planing knives or milling tools are processed simultaneously on opposite sides, for example on the top and bottom.
  • the aim of the invention is to create flawless strand surfaces even on the strand region previously affected by flaws, regardless of whether the cast strand has a square or approximately square billet cross section or a relatively flat and wide slab cross section.
  • the surface quality of the cast strand should be improved in the areas previously affected by flaws with as little material removal as possible.
  • GB-A-12 18 929 (A-DE-A-1652671) already discloses a method and a device for the continuous surface peeling of continuous casting billets at hot forming temperature, which or which with counterpressure rollers arranged in pairs on diametrically opposite sides of the billet and a peeling tool that can be moved back and forth in the strand movement direction.
  • the billet is pulled past or pushed past the peeling tools by at least one pair of pressure rollers arranged behind or in front of the peeling tools, their synchronization with the conveyor rollers for the continuous casting billet, due to the pressing effect exerted on the strand by the peeling tools, causes considerable difficulties.
  • the oscillating back and forth movement of the peeling tools on an arcuate path creates a wavy surface profile on the cast strand, which not only affects its surface quality, but also leads to an undesirably high material removal.
  • the hot strand is simultaneously grinded on the top and bottom sides with the grinding wheels moving back and forth between the strand edges, This is done using a grinding device that has at least one grinding wheel that can be moved back and forth between the edges of the strand.
  • the axis of the grinding wheel is set at an angle deviating from 90 ° to its direction of travel such that removed material is always thrown onto surface sections of the strand that have not yet been ground.
  • the aim of the invention is therefore to specify a type of method and to provide a device for carrying it out, which ensures optimum surface quality over the entire processing width with the least possible removal of material from the continuous cast surfaces and thereby one for further processing, in particular a subsequent rolling out, favorable shape of the surface areas affected by the material removal.
  • the technical solution to this problem is based on the fact that the removal process is carried out in each case on tracks which are inclined in the strand movement direction and are alternately inclined to the right and left, and the removal process is intensified as a function of surface defects which occur.
  • a further important process technology according to the invention is that the cross-loop path of the removal process is derived from a pivoting movement of the tool carrier which is carried out alternately in and against the strand movement direction.
  • a device for the continuous mechanical removal of material from continuous casting surfaces in the hot state, in which the hot strand before the transverse division of the action of cutting tools moving back and forth between the strand edges, e.g. Grinding disks, planing knives or milling tools, is characterized by the fact that the cutting tools sit on a feed carriage that can be moved back and forth along a trajectory that is inclined in the direction of strand movement and reversible in its direction of inclination, that the cutting tools have a troubleshooting device, e.g. a detector or video device is arranged upstream and that the positioning movements of the cutting tools can be set as a function of error signals against the surface of the strand via the troubleshooting device.
  • a troubleshooting device e.g. a detector or video device is arranged upstream and that the positioning movements of the cutting tools can be set as a function of error signals against the surface of the strand via the troubleshooting device.
  • An embodiment of this device according to the invention also consists in the fact that the movement path for the feed carriage or carriage extends beyond the strand edges and can be reversed in the inclination direction with tools located outside the strand edges.
  • the tools arranged on opposite sides of the strand are arranged offset from one another in the strand movement direction. If the cast strand then runs over a transport roller table, according to the invention there is the advantageous possibility that the tool assigned to the top side of the strand lies above a roller table roller, while the tool assigned to the bottom side of the strand is arranged between two roller table rollers. The cast strand is then securely supported by the roller table roller against the action of the tool processing the upper side of the strand, while opposing its own weight to the tool acting against the underside of the strand.
  • This construction of a removal device makes it possible to make the drives for the movement of a closed cross-loop track particularly favorable for the two slide parts of the cross slide, because the drive part actuating the slide part traveling transversely to the strand movement direction is designed for constant drive speed during the to-and-fro movement can, while only the drive part for the slide part, which can be moved parallel to the strand movement direction, must be designed in such a way that it produces a lower drive speed at the entrance than at the fall.
  • a combination of rotating and oscillating crank loops is suitable for this.
  • a further embodiment of the removal device according to the invention can be achieved in that the one slide part is a frame in which the swivel arms can be individually adjusted by means of power drives, while the other slide part consists of a gate-like stand which carries at least one transverse guide cross member on which the a sled part is suspended.
  • Another type of removal device is characterized in that the tools are mounted at the free end of swivel arms, which are suspended individually on the one hand about horizontal axes via power drives and on the other hand alternately in and against a vertical axis lying outside the strand passage area with a lateral spacing the strand direction of movement are pivotable. It is important here according to the invention that the swivel arms are suspended in a frame which is movably seated in at least one transverse guide crossmember in a gate-like stand which can be rotated about the vertical axis.
  • an ablation device can also be constructed in such a way that two pairs of swivel arms of the same type, equipped with tools, are provided one behind the other at a distance. It is also possible here for two pairs of swivel arms equipped with tools to be provided in two positions angularly offset from one another with respect to the strand cross section and at the same time attachable to the continuous casting surfaces.
  • the tools arranged on opposite sides of the strand may be suspended from structurally and / or drivingly separate support and guide members.
  • the support members consist of rail tracks oriented transversely to the strand movement direction, while the guide members are formed by carriages movable on the rail tracks, each of which holds a bearing block which can be rotated about a vertical axis, in which a swivel arm, which supports the tool at its free end, is suspended so that it can be adjusted about a horizontal axis.
  • the feed rate of the tools must correspond to a function dependent on the transport speed of the cast strand and its processing width in order to create flawless work results, it is important in any case according to the invention that the direction of inclination for the reciprocating movement of the tools is reversed faster if these are outside the strand edges.
  • the movement of the strand 1 over the transport roller table 3 is effected with the aid of drivers 4 'and 4 "at a speed which is matched to its outlet speed from the continuous casting installation.
  • the lateral guidance of the strand 1 is ensured in the area between the two drivers 4 'and 4 "by guide rollers 5' and 5".
  • a cutting machine for example in the form of a flame cutting machine, which divides the continuously moving strand 1 into individual strand sections 7 of a definable length, which are then conveyed further on the removal roller table 8.
  • a fault locator 9 for example a detector, is provided in the area of the access roller table 3, for example in front of the first driver 4 ', which scans the surfaces of the strand 1 for defects.
  • a removal device 10 for example in the form of a grinding machine, is installed in the transport roller table 3, which is controlled as a function of the troubleshooting device in such a way that, in addition to an adjustable, constant machining depth, it also applies to the surface areas of the Strands 1 is brought into effect with increased processing depth and removed by grinding.
  • the troubleshooting device 9 consists of two components 9 'and 9 ", one of which is assigned to the top of the strand 1 and the other to the underside of the same.
  • the removal device 10 also has two components, one of which is the top and the other can act on the underside of the strand 1.
  • the upper component 10 'of the removal device 10, which consists, for example, of a grinding machine, is provided in such a way that it acts on the strand 1 immediately above a roller of the feed roller table 3, whereby this finds an abutment on the roller table roller which counteracts the contact force of component 10 '.
  • the component 10 "of the removal device 10, for example formed by a grinding machine, assigned to the underside of the strand 1, on the other hand, is provided in the area between two successive rollers of the feed roller table 3, their The counterweight counteracts the dead weight of strand 1 acts.
  • the troubleshooting device 9 scans the surface of the strand 1 that is in continuous motion and triggers positioning movements of the removal device 10 against the surfaces of the strand 1 in such a way that an increased material removal only takes place in the length ranges of the same that actually have defects.
  • a deceleration control influenced by the transport speed of line 1 can be used for this.
  • strand 1 In Fig. 2 of the drawing, the direction of strand movement is indicated by the arrow 11.
  • the strand 1 there has the processing width 12 between its two longitudinal edges, while in a certain time unit it runs through the transport path 13 determined by the transport speed.
  • the material removal device 10 or one of its two components 10 'and 10 "is put into operation, then it runs relative to the strand 1 through the movement path 14 indicated in FIG. 2, which is in the form of a closed and essentially transverse to the strand movement direction 11 directed cross loop.
  • This cross-loop movement path 14 has two straight path sections 14 'and 14 ", of which the path section 14' extends between points 15 'and 16' with a path inclination from right to left, while the path section 14" between points 15 " and 16 "from left to right.
  • the two track sections 14 'and 14 "are connected to one another between the points 16' and 15" by a curved track section 17 ', while they are connected by a correspondingly curved track section 17 "between the points 16" and 15'.
  • the path points 15 ', 15 "and 16', 16" of the cross-loop movement path 14 coincide approximately with the longitudinal edges of the strand 1, so that the curved path sections 17 'and 17 "each have their entire width 18' or 18" and their entire height 19 'or 19 "outside the width 12 of the rod 1.
  • the direction of movement of the material removal device 10 along the cross-loop movement path 14 is indicated by the direction arrows shown. It is clear here that their direction of movement via the straight path sections 14 ′ and 14 ′′ each has a component in the strand movement direction 11, while their direction of movement reverses via the curved path sections, and thus thus has a component opposed to the strand movement direction 11.
  • the distance between the web points 15 'and 16 "or 15" and 16' is approximately equal to the transport path 13 of the strand 1 in the time unit, i.e. the material removal device 10 passes through the straight track section 14 'between the track points 15' and 16 'and the straight track section 14 "between the track points 15" and 16 "in each case in the same time unit as the transport path 13 of the rod 1. Consequently, through the material removal device 10 acting on the top and / or underside of the strand 1 generates in the unit of time a processing surface which extends across the entire width 12 of the strand 1 and has a rectangular outline shape, transverse to the strand movement direction 11.
  • FIG. 3 shows a strand 1 which is provided with a plurality of machining surfaces 20 ', 20 II , 20 "', 20 lV and 20 v which follow one another in the strand movement direction 11.
  • the machining surfaces 20 ', 20 III and 20 v each while the material removal device 10 is moving, that is to say while it is moving along the web section 14 ', while the processing surfaces 20 ", 20 lV each occur when the material removal device 10 decreases, that is to say when it moves over the web section 14", have been formed.
  • FIG. 5 and 6 show a preferred embodiment of a device 21 for the continuous mechanical removal of material from continuous casting surfaces.
  • the material removal on the surfaces of the strand 1 consists of rotating driven grinding wheels 22 ', 22 ", each of which is mounted on a swivel arm 24' or 24" movably suspended about a horizontal axis 23 'or 23 ".
  • the frame 25 is suspended via a carriage or slide 28 on a guide cross-member 29 which extends transversely to the strand movement direction 11 and is carried by a gate-like stand 30 which can be displaced parallel to the strand movement direction 11, for example by means of a slide 31.
  • the grinding wheels 22 'and 22 "have an inclined position relative to the strand movement direction 11 which deviates from 90 ° and is, for example, 60 °.
  • the upper grinding wheel 22' is in one The area above the roller table roller of the feed roller table 3 operates, while the lower grinding wheel 22 ′′ is located in the area between two successive roller table rollers.
  • the drive devices (not shown) for the transverse movement of the frame 25 in the gate-like stand 30 and the longitudinal movement of the gate-like stand on the carriage 31 are coordinated and designed in such a way that the grinding wheels 22 ′, 22 ′′ form a cross-loop movement path 14 during a complete working cycle 2 and in doing so produce on the continuously moving strand 1 two abutting or partially overlapping processing areas 20 ', 20 "etc. according to FIGS. 3 and 4.
  • the gate-like stand 30 and the frame 25 suspended therein work together in the manner of a cross slide, in such a way that their overlapping adjustment movements produce the cross loop movement path 40 according to FIG. 2.
  • two additional loop devices 32 ', 32 can be provided, which are inclined relative to the transport plane of strand 1 such that their grinding wheels 34', 34" mounted on swivel arms 33 'and 33 " act on the narrow edge surfaces of strand 1 with a length inclined towards the horizontal.
  • a removal device 35 which has a simplified structure compared to that according to FIGS. 5 and 6 and which can be used for processing continuous cast billets 36 which are square in cross section.
  • the width of the grinding wheels 37 'and 37 is dimensioned such that they cover the entire width of a side face of the billet and simply because they are positioned against the billet with the aid of their swivel arms 38' and 38", material is removed from the latter effect its full breadth.
  • the frame 41 supporting the swivel arms 38 'and 38 "about the horizontal axes 39' and 39" and the drive motors 40 'and 40 "for the grinding wheels 37', 37” can be arranged stationary, preferably in such a way that the Pivot plane of the pivot arms 38 'and 38 "has a position inclined at an acute angle to the longitudinal axis of the stick 36.
  • FIG. 9 there is also the possibility of arranging two removal devices 35 of the type shown in FIGS. 7 and 8 relative to one another such that 36 grinding disks 37 ′ and 37 ′′ or, respectively, on all four side surfaces of the continuous casting billet 37 'and 37 "come into effect.
  • the device 21 shown in FIGS. 5 and 6 for the continuous mechanical removal of material from continuous casting surfaces can also be designed in such a way that the gate-like stand 30 rests on a circular guideway 30 ′′ rotatable about a vertical axis 30'-30 ' the transverse movement of the swivel arms 24 'and 24 "carrying the grinding wheels 22' and 22" by means of the frame 25 then the gate-like stand 30 about the vertical axis 30'-30 'within a predetermined, depending on the width 12 of the strand 1 to be processed , Angular range rotated back and forth and thus produces a movement sequence which is similar to that which results when using the slide 31 which is displaceable parallel to the strand movement direction 11.
  • a difference in the movement sequence results in the removal device 21 with about the vertical axis 30 ′.
  • 30 'rotatable, gate-like stand 30 compared to one with a stand which can be moved by means of a slide 31 30 only insofar as the grinding wheels 22 'and 22 "carried by the swivel arms 24', 24" continuously change their angular position relative to the direction of strand movement 11.
  • a material removal device 51 in which the tools causing the material removal on the surfaces of the strand 1 in turn consist of rotationally driven grinding wheels 52 ′ and 52 ′′, each of which is arranged around a horizontal axis 53 'or 53 "movably suspended pivot arm 54' or 54" is mounted.
  • Each of the axes 53 'and 53 “sits in a bearing block 55' or 55", which also the drive motor 56 'or 56 "for the Grinding disks 52 'and 52 “and on which also the separately actuatable power drives 57' and 57", for example pressure medium cylinders, are anchored, which serve as adjusting devices for the grinding disks 52 'and 52 "against the strand 1.
  • the bearing block 55 ' is suspended from a carriage 58 which runs on a fixed rail track 59' which extends transversely to the strand movement direction 11.
  • the bearing block 55 ' is held rotatable about a vertical axis 60' relative to the carriage 58 '.
  • the bearing block 55 rests on a carriage 58", which likewise runs on a rail track 59 “oriented transversely to the strand movement direction 11, the bearing block 55" also being held on the carriage 58 “so that it can be rotated about a vertical axis 60".
  • the rail track 59 'and the part 51' of the removal device 51 suspended transversely on it is located overall above the transport plane of the strand 1, while the rail track 59 "and the part 51" of the removal device resting thereon are located below this transport level.
  • the two parts 51 'and 51 "of the removal device 51 enable independent operation. However, if necessary, they can also be used simultaneously and, if necessary, synchronously in their operating sequence.
  • the mode of operation of the removal device 51 according to FIGS. 10 to 12 is in itself the same as that of the removal device 21 according to FIGS. 5 and 6, whose gate-like stand 30 is arranged such that it can be rotated about the vertical axis 30'-30 '.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Metal Rolling (AREA)
  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
  • Treatment Of Steel In Its Molten State (AREA)

Abstract

1. Method for the continuous mechanical removal of material from continuous casting surfaces in the hot state, in which the hot strand (1) before the transverse parting (6) is machined simultaneously on mutually opposite sides, for example on the upper and the lower side, by machining tools (10), for example grinding discs (10', 10"), planing blades or milling tools, moving to and from between the strand edges, characterised thereby, that the removal operation is carried out each time on tracks (14', 14"), which extend obliquely in strand movement direction (11) and are inclined alternately to right and left, and the removal operation (10, 10', 10") is in that case intensified in dependence on arising surface faults.

Description

Die Erfindung betrifft ein Verfahren und eine Vorrichtung zum kontinuierlichen mechanischen Abtragen von Material von Strangguss-Oberflächen im heissen Zustand, bei welchem der heisse Strang vor dem Querteilen mit zwischen den Strangkanten hin- und herfahrenden spanabhebenden Werkzeugen, z.B. Schleifscheiben, Hobelmessern oder Fräswerkzeugen, gleichzeitig auf sich gegenüberliegenden Seiten, beispielsweise auf der Ober- und der Unterseite, bearbeitet wird.The invention relates to a method and a device for the continuous mechanical removal of material from continuous casting surfaces in the hot state, in which the hot strand prior to cross-cutting with cutting tools moving back and forth between the strand edges, e.g. Grinding wheels, planing knives or milling tools are processed simultaneously on opposite sides, for example on the top and bottom.

Angestrebt wird nach der Erfindung die Schaffung einwandfreier Strangoberflächen auch an dem zuvor mit Fehlerstellen behafteten Strangbereich, und zwar unabhängig davon, ob der Gussstrang einen quadratischen bzw. annähernd quadratischen Knüppelquerschnitt oder aber einen verhältnismässig flachen und breiten Brammenquerschnitt aufweist. Zudem soll die Oberflächenbeschaffenheit des Gussstranges in den zuvor mit Fehlerstellen behafteten Bereichen mit möglichst geringem Materialabtrag verbessert werden.The aim of the invention is to create flawless strand surfaces even on the strand region previously affected by flaws, regardless of whether the cast strand has a square or approximately square billet cross section or a relatively flat and wide slab cross section. In addition, the surface quality of the cast strand should be improved in the areas previously affected by flaws with as little material removal as possible.

Durch die GB-A-12 18 929 (A- DE-A-1652671) sind bereits ein Verfahren und eine Vorrichtung zum kontinuierlichen Oberflächenschälen von Stranggussknüppeln bei Warmformgebungstemperatur bekannt, welches bzw. welche mit jeweils paarweise an diametral gegenüberliegenden Seiten des Knüppels angeordneten Gegendruckrollen und einem in Strang-Bewegungsrichtung hin-und herbewegbaren Schälwerkzeug arbeitet. Hierbei ist es jedoch notwendig, dass der Knüppel durch mindestens ein Paar hinter oder vor den Schälwerkzeugen angeordneter Druckrollen an den Schälwerkzeugen vorbeigezogen bzw. vorbeigedrückt wird, deren Synchronisation mit den Förderrollen für den Stranggussknüppel, bedingt durch die von den Schälwerkzeugen auf den Strang ausgeübte Presswirkung, beträchtliche Schwierigkeiten bereitet. Ausserdem entsteht durch die oszillierende Hin- und Herbewegung der Schälwerkzeuge auf einer bogenförmigen Bahn ein wellenförmiges Oberflächenprofil am Gussstrang, das nicht nur dessen Oberflächenbeschaffenheit beeinträchtigt, sondern auch zu einem unerwünscht hohen Materialabtrag führt.GB-A-12 18 929 (A-DE-A-1652671) already discloses a method and a device for the continuous surface peeling of continuous casting billets at hot forming temperature, which or which with counterpressure rollers arranged in pairs on diametrically opposite sides of the billet and a peeling tool that can be moved back and forth in the strand movement direction. Here, however, it is necessary that the billet is pulled past or pushed past the peeling tools by at least one pair of pressure rollers arranged behind or in front of the peeling tools, their synchronization with the conveyor rollers for the continuous casting billet, due to the pressing effect exerted on the strand by the peeling tools, causes considerable difficulties. In addition, the oscillating back and forth movement of the peeling tools on an arcuate path creates a wavy surface profile on the cast strand, which not only affects its surface quality, but also leads to an undesirably high material removal.

Zur Vermeidung der sich durch diese bekannte Verfahrensart sowie beim Einsatz der bekannten Schälvorrichtung ergebenden Nachteile wird nach einer älteren, aber nicht vorveröffentlichten Verfahrensart der heisse Strang vor dem Querteilen mit zwischen den Strangkanten hin- und herfahrenden Schleifscheiben gleichzeitig auf der Ober-und der Unterseite geschliffen, und zwar unter Benutzung einer Schleifvorrichtung, die mindestens je eine über bzw. unter dem Strang zwischen dessen Kanten hin- und herfahrbare Schleifscheibe aufweist.In order to avoid the disadvantages resulting from this known type of process and from the use of the known peeling device, according to an older, but not previously published type of process, the hot strand is simultaneously grinded on the top and bottom sides with the grinding wheels moving back and forth between the strand edges, This is done using a grinding device that has at least one grinding wheel that can be moved back and forth between the edges of the strand.

Bei der zur Durchführung der älteren Verfahrensart zum Einsatz gelangenden Schleifvorrichtung ist dabei die Achse der Schleifscheibe mit einem von 90° zu ihrer Verfahrrichtung abweichenden Winkel derart gestellt, dass abgetragenes Material immer auf noch nicht geschliffene Oberflächenabschnitte des Stranges geschleudert wird.In the grinding device used to carry out the older type of process, the axis of the grinding wheel is set at an angle deviating from 90 ° to its direction of travel such that removed material is always thrown onto surface sections of the strand that have not yet been ground.

Unter Praxisbedingungen durchgeführte Versuche nach der älteren Verfahrensart unter Benutzung der vorgeschlagenen Schleifvorrichtungen haben jedoch gezeigt, dass auch hier durch die aus dem Verfahren und der Vorrichtung nach der GB-A-12 18 929 resultierenden Nachteile bzw. Unzulänglichkeiten noch nicht in optimaler Weise ausgeräumt werden können.Tests carried out under practical conditions according to the older type of process using the proposed grinding devices have shown, however, that here too, the disadvantages or inadequacies resulting from the process and the device according to GB-A-12 18 929 cannot yet be eliminated in an optimal manner .

Ziel der Erfindung ist es daher, eine Verfahrensart anzugeben und eine Vorrichtung zu deren Durchführung zu schaffen, die unter geringstmöglichem Materialabtrag von den Stranguss-Oberflächen über die gesamte Bearbeitungsbreite eine optimale Oberflächenqualität gewährleistet und dabei eine für die Weiterverarbeitung, und zwar insbesondere ein nachfolgendes Auswalzen, günstige Gestalt der vom Materialabtrag betroffenen Oberflächenbereiche herbeiführt.The aim of the invention is therefore to specify a type of method and to provide a device for carrying it out, which ensures optimum surface quality over the entire processing width with the least possible removal of material from the continuous cast surfaces and thereby one for further processing, in particular a subsequent rolling out, favorable shape of the surface areas affected by the material removal.

Die Verfahrenstechnische Lösung dieser Aufgabe beruht erfindungsgemäss darauf, dass der Abtragvorgang jeweils auf in Strang-Bewegungsrichtung schräg verlaufenden, abwechselnd nach rechts und links geneigten Bahnen ausgeführt wird und dabei der Abtragvorgang in Abhängigkeit von auftretenden Oberflächenfehlern intensiviert wird.The technical solution to this problem is based on the fact that the removal process is carried out in each case on tracks which are inclined in the strand movement direction and are alternately inclined to the right and left, and the removal process is intensified as a function of surface defects which occur.

Die besonderen Vorteile dieser Verfahrensart liegen darin, dass jeweils nur in denjenigen Bereichen der Strangguss-Oberflächen eine erhöhte Materialabtragung stattfindet, die mit Fehlerstellen behaftet sind, und dass trotz kontinuierlicher Vorschubbewegung des Gussstranges die Bearbeitungsbereiche über die gesamte Bearbeitungsbreite eine im wesentlichen rechteckige Begrenzung erhalten.The particular advantages of this type of process lie in the fact that increased material removal takes place only in those areas of the continuous casting surfaces that are flawed, and that despite the continuous feed movement of the cast strand, the processing areas are given an essentially rectangular boundary over the entire processing width.

Voraussetzung für die Durchführung eines kontinuierlichen Abtragvorganges ist lediglich, dass die schrägverlaufenden, abwechselnd nach rechts und links geneigten Bahnen in Strang-Bewegungsrichtung vom Abtragwerkzeug so aufgefahren werden, dass beim Hergang des Abtragwerkzeugs der Abtragvorgang an der Oberfläche des bewegten Stranges jeweils dort wieder angesetzt, wo zuvor der Abtragvorgang beim Hingang beendet wurde. Es kommt nämlich im Zusammenhang mit der Abtragsbearbeitung der Strangguss-Oberfläche praktisch nur darauf an, dass darin keine unbearbeiteten Flächenbereiche stehen bleiben.The only prerequisite for carrying out a continuous removal process is that the inclined, alternatingly inclined to the right and left tracks in the strand movement direction are opened by the removal tool in such a way that the removal process on the surface of the moving strand starts again where the removal tool is going before the removal process at the entrance was ended. In connection with the removal processing of the continuous casting surface, it is practically only important that no unprocessed surface areas remain in it.

Als zweckmässig hat es sich nach der Erfindung erwiesen, wenn die Stangguss-Oberflächen in ihrer Strang-Bewegungsrichtung ständig auf Fehlerquellen abgetastet werden und der Abtragvorgang durch auftretende Fehlersignale intensiviert wird.It has proven to be expedient according to the invention if the continuous casting surfaces are continuously scanned in their direction of movement for sources of error and the removal process is intensified by error signals that occur.

Besonders vorteilhafte Arbeitsergebnisse werden erfindungsgemäss dadurch erzielt, dass der Abtragvorgang auf einer quer zur Strang-Bewegungsrichtung liegenden, geschlossenen Kreuzschleifenbahn bewirkt und dabei die Kreuzschleifenbahn mit ihren bogenförmigen Bahnabschnitten über die Strangkanten hinaus geführt wird. Bei dieser Verfahrensart hat es sich weiterhin als empfehlenswert erwiesen, dass die Neigungsverstellung für die Bahnen in den bogenförmigen Bahnabschnitten der Kreuzschleifenbahn beschleunigt sowie in zur Strang-Bewegungsrichtung entgegengesetzter Richtung durchgeführt wird. Auf diese Art und Weise ist eine optimale Anpassung des Abtragvorgangs auch an unterschiedliche Vorschubgeschwindigkeiten des Stranges erreichbar.Particularly advantageous work results are achieved according to the invention in that the removal process is effected on a closed cross-loop path lying transversely to the strand movement direction and the cross-loop path with its arcuate path sections is guided beyond the strand edges. With this type of procedure, it has also proven to be recommended that the inclination ver Position for the tracks in the arcuate track sections of the cross-loop track accelerated and carried out in the opposite direction to the strand movement direction. In this way, an optimal adaptation of the removal process to different feed speeds of the strand can be achieved.

Eine weitere wichtige Verfahrenstechnik liegt nach der Erfindung darin, dass die Kreuzschleifenbahn des Abtragvorganges aus einer abwechselnd in und entgegen der Strang-Bewegungsrichtung durchgeführten Schwenkbewegung des Werkzeugträgers abgeleitet wird.A further important process technology according to the invention is that the cross-loop path of the removal process is derived from a pivoting movement of the tool carrier which is carried out alternately in and against the strand movement direction.

Eine erfindungsgemässe Vorrichtung zum kontinuierlichen mechanischen Abtragen von Material von Strangguss-Oberflächen im heissen Zustand, bei welchem der heisse Strang vor dem Querteilen der Einwirkung von zwischen den Strangkanten hin- und herfahrenden spanabhebenden Werkzeugen, z.B. Schleifscheiben, Hobelmessern oder Fräswerkzeugen, ausgesetzt ist, zeichnet sich dadurch aus, dass die spanabhebenden Werkzeuge auf einem Vorschubschlitten sitzen, der längs einer in Strang-Bewegungsrichtung geneigten und in ihrer Neigungsrichtung umkehrbaren Bewegungsbahn hin- und herfahrbar ist, dass den spanabhebenden Werkzeugen ein Fehlersuchgerät, z.B. ein Detektor oder Videogerät, vorgeordnet ist und dass über das Fehlersuchgerät die Anstellbewegungen der spanabhebenden Werkzeuge in Abhängigkeit von Fehlersignalen gegen die Oberfläche des Stranges einstellbar sind.A device according to the invention for the continuous mechanical removal of material from continuous casting surfaces in the hot state, in which the hot strand before the transverse division of the action of cutting tools moving back and forth between the strand edges, e.g. Grinding disks, planing knives or milling tools, is characterized by the fact that the cutting tools sit on a feed carriage that can be moved back and forth along a trajectory that is inclined in the direction of strand movement and reversible in its direction of inclination, that the cutting tools have a troubleshooting device, e.g. a detector or video device is arranged upstream and that the positioning movements of the cutting tools can be set as a function of error signals against the surface of the strand via the troubleshooting device.

Eine erfindungsgemässe Ausgestaltung dieser Vorrichtung besteht auch darin, dass die Bewegungsbahn für den Vorschubschlitten oder -wagen sich über die Strangkanten hinaus erstreckt und jeweils bei ausserhalb der Strangkanten befindlichen Werkzeugen in der Neigungsrichtung umkehrbar ist. In vielen Fällen kann es sich auch als vorteilhaft erweisen, wenn erfindungsgemäss die auf sich gegenüberliegenden Seiten des Stranges angeordneten Werkzeuge in Strang-Bewegungsrichtung gegeneinander versetzt angeordnet sind. Wenn dann der Gussstrang über einen Transportrollgang läuft, besteht nach der Erfindung die vorteilhafte Möglichkeit, dass das der Strang-Oberseite zugeordnete Werkzeug oberhalb einer Rollgangsrolle liegt, während das der Strang-Unterseite zugeordnete Werkzeug zwischen zwei Rollgangsrollen angeordnet ist. Gegen die Wirkung des die Strang-Oberseite bearbeitenden Werkzeuges wird dann der Gussstrang sicher durch die Rollgangsrolle abgestützt, während er dem gegen die Strang-Unterseite wirkenden Werkzeug sein Eigengewicht entgegensetzt.An embodiment of this device according to the invention also consists in the fact that the movement path for the feed carriage or carriage extends beyond the strand edges and can be reversed in the inclination direction with tools located outside the strand edges. In many cases, it can also prove to be advantageous if, according to the invention, the tools arranged on opposite sides of the strand are arranged offset from one another in the strand movement direction. If the cast strand then runs over a transport roller table, according to the invention there is the advantageous possibility that the tool assigned to the top side of the strand lies above a roller table roller, while the tool assigned to the bottom side of the strand is arranged between two roller table rollers. The cast strand is then securely supported by the roller table roller against the action of the tool processing the upper side of the strand, while opposing its own weight to the tool acting against the underside of the strand.

Für die bauliche Ausgestaltung einer erfindungsgemässen Abtragvorrichtung hat es sich bewährt, dass die Werkzeuge am freien Ende von Schwenkarmen zu lagern, die von einem Kreuzschlitten getragen sind, dessen einer Schlittenteil quer zur Strang-Bewegungsrichtung mit konstanter Geschwindigkeit hin- und herbewegbar ist, während der andere Schlittenteil parallel zur Strang-Bewegungsrichtung beim Hingang mit kleinerer Geschwindigkeit läuft als beim Rückgang, und dass die Antriebe beider Schlittenteile miteinander getrieblich verbunden sind.For the structural design of an ablation device according to the invention, it has proven useful to mount the tools at the free end of swivel arms which are carried by a cross slide, one sled part of which can be moved back and forth at a constant speed transversely to the strand movement direction, while the other Sled part runs parallel to the direction of movement of the entrance at a lower speed than when falling, and that the drives of both sled parts are connected to each other by gears.

Durch diesen Aufbau einer erfindungsgemässen Abtragvorrichtung lassen sich die das Abfahren einer geschlossenen Kreuzschleifenbahn bewirkenden Antriebe für die beiden Schlittenteile des Kreuzschlittens besonders günstig gestalten, weil nämlich der den quer zur Strang-Bewegungsrichtung fahrenden Schlittenteil betätigende Antriebsteil für konstante Antriebsgeschwindigkeit bei der Hin- und Herbewegung ausgelegt werden kann, während lediglich der Antriebsteil für den parallel zur Strang-Bewegungsrichtung verfahrbaren Schlittenteil so ausgelegt werden muss, dass er beim Hingang eine geringere Antriebsgeschwindigkeit als beim Rückgang hervorbringt. Hierzu eignet sich beispielsweise eine Kombination von umlaufender und schwingender Kurbelschleife.This construction of a removal device according to the invention makes it possible to make the drives for the movement of a closed cross-loop track particularly favorable for the two slide parts of the cross slide, because the drive part actuating the slide part traveling transversely to the strand movement direction is designed for constant drive speed during the to-and-fro movement can, while only the drive part for the slide part, which can be moved parallel to the strand movement direction, must be designed in such a way that it produces a lower drive speed at the entrance than at the fall. A combination of rotating and oscillating crank loops is suitable for this.

Eine weitere erfindungsgemässe Ausgestaltung der Abtragvorrichtung ist dadurch erreichbar, dass der eine Schlittenteil ein Rahmen ist, in dem die Schwenkarme über Kraftantriebe einzeln anstellbar aufgehängt sind, während der andere Schlittenteil aus einem torartigen Ständer besteht, der mindestens eine quer verlaufende Führungstraverse trägt, an der der eine Schlittenteil aufgehängt ist.A further embodiment of the removal device according to the invention can be achieved in that the one slide part is a frame in which the swivel arms can be individually adjusted by means of power drives, while the other slide part consists of a gate-like stand which carries at least one transverse guide cross member on which the a sled part is suspended.

Eine andere Bauart einer erfindungsgemässen Abtragvorrichtung zeichnet sich dadurch aus, dass die Werkzeuge am freien Ende von Schwenkarmen lagern, die einerseits um horizontale Achsen über Kraftantriebe einzeln anstellbar aufgehängt sind und andererseits um eine mit seitlichem Abstand ausserhalb des Strang-Durchlaufbereiches liegende Vertikalachse abwechselnd in und entgegen der Strang-Bewegungsrichtung schwenkbeweglich sind. Hierbei ist es nach der Erfindung bedeutsam, dass die Schwenkarme in einem Rahmen aufgehängt sind, der in einem um die Vertikalachse drehbaren, torartigen Ständer an mindestens einer quer verlaufenden Führungstraverse verfahrbar sitzt.Another type of removal device according to the invention is characterized in that the tools are mounted at the free end of swivel arms, which are suspended individually on the one hand about horizontal axes via power drives and on the other hand alternately in and against a vertical axis lying outside the strand passage area with a lateral spacing the strand direction of movement are pivotable. It is important here according to the invention that the swivel arms are suspended in a frame which is movably seated in at least one transverse guide crossmember in a gate-like stand which can be rotated about the vertical axis.

Eine erfindungsgemässe Abtragvorrichtung kann aber auch so aufgebaut sein, dass zwei gleichartige, mit Werkzeugen bestückte Schwenkarmpaare im Abstand hintereinander vorgesehen sind. Hierbei ist es auch möglich, dass zwei mit Werkzeugen bestückte Schwenkarmpaare in zwei zueinander zum Strangquerschnitt winkelversetzten Lagen vorgesehen und gleichzeitig auf die Strangguss-Oberflächen ansetzbar sind.However, an ablation device according to the invention can also be constructed in such a way that two pairs of swivel arms of the same type, equipped with tools, are provided one behind the other at a distance. It is also possible here for two pairs of swivel arms equipped with tools to be provided in two positions angularly offset from one another with respect to the strand cross section and at the same time attachable to the continuous casting surfaces.

Erfindungsgemäss ist es auch möglich, dass die auf sich gegenüberliegenden Seiten des Stranges angeordneten Werkzeuge an baulich und/oder antriebsmässig voneinander getrennten Trag- und Führungsorganen aufgehängt sind. Hierbei kann es sich als wichtig erweisen, dass die Tragorgane aus quer zur Strang-Bewegungsrichtung gerichteten Schienenbahnen bestehen, während die Führungsorgane von an den Schienenbahnen beweglichen Laufwagen gebildet sind, deren jeder einen um eine Vertikalachse drehbaren Lagerbock hält, in dem ein an seinem freien Ende das Werkzeug lagernder Schwenkarm um eine horizontale Achse anstellbar aufgehängt ist.According to the invention, it is also possible for the tools arranged on opposite sides of the strand to be suspended from structurally and / or drivingly separate support and guide members. It may prove important here that the support members consist of rail tracks oriented transversely to the strand movement direction, while the guide members are formed by carriages movable on the rail tracks, each of which holds a bearing block which can be rotated about a vertical axis, in which a swivel arm, which supports the tool at its free end, is suspended so that it can be adjusted about a horizontal axis.

Da zur Schaffung einwandfreier Arbeitsergebnisse die Vorschubgeschwindigkeit der Werkzeuge jeweils einer von der Transportgeschwindigkeit des Gussstranges und seiner Bearbeitungsbreite abhängigen Funktion entsprechen muss, ist es nach der Erfindung in jedem Falle wichtig, dass die Neigungsrichtung für die Hin- und Herbewegung der Werkzeuge beschleunigt umgekehrt wird, wenn sich diese ausserhalb der Strangkanten befinden.Since the feed rate of the tools must correspond to a function dependent on the transport speed of the cast strand and its processing width in order to create flawless work results, it is important in any case according to the invention that the direction of inclination for the reciprocating movement of the tools is reversed faster if these are outside the strand edges.

Weitere Merkmale und Vorteile der Erfindung werden nachfolgend anhand der in der Zeichnung dargestellten Ausführungsbeispiele ausführlich erläutert. Hierbei zeigt

  • Figur 1 in schematisch vereinfachter Seitenansicht die Zuordnung einer erfindungsgemässen Abtragvorrichtung zu einer Stranggiessanlage,
  • Figur 2 in schematisch vereinfachter Draufsichtdarstellung das Wirkprinzip einer erfindungsgemässen Abtragvorrichtung an einem Stahlgussstrang,
  • Figur 3 ebenfalls in schematischer Draufsichtdarstellung das mit dem Abtragverfahren gemäss Fig. 2 erzielbare Arbeitsergebnis an einem Stahlgussstrang,
  • Figur 4 in Pfeilrichtung IV der Fig. 3 gesehen das mit dem Abtragverfahren nach Fig. 2 erzielbare Arbeitsergebnis an einem Stahlgussstrang,
  • Fig. 5 in Seitenansicht eine bevorzugte Ausführungsform einer erfindungsgemässen Abtragvorrichtung,
  • Fig. 6 die Abtragvorrichtung nach Fig. 5 in der Draufsicht,
  • Fig. 7 eine andere Ausführungsform einer erfindungsgemässen Abtragvorrichtung in Seitenansicht,
  • Fig. 8 die Abtragvorrichtung nach Fig. 7 in der Draufsicht,
  • Figur 9 in räumlicher Prinzipdarstellung die Zuordnung zweier um 90° zueinander winkelversetzt arbeitender Abtragvorrichtungen nach den Fig. 7 und 8 zu einem Stahlgussstrang zur gleichzeitigen Bearbeitung aller vier Strang-Oberflächen,
  • Figur 10 in Seitenansicht eine weitere Ausführungsform einer erfindungsgemässsen Abtragvorrichtung,
  • Figur 11 die Abtragvorrichtung nach Fig. 10 in der Draufsicht und
  • Figur 12 die Abtragvorrichtung nach den Fig. 10 und 11 in Pfeilrichtung XII der Fig. 10 gesehen.
Further features and advantages of the invention are explained in detail below with reference to the exemplary embodiments shown in the drawing. Here shows
  • FIG. 1 shows, in a schematically simplified side view, the assignment of a removal device according to the invention to a continuous casting installation,
  • FIG. 2 shows, in a schematically simplified plan view, the operating principle of a removal device according to the invention on a cast steel strand,
  • FIG. 3 likewise shows a schematic top view of the work result that can be achieved with the removal method according to FIG. 2 on a cast steel strand,
  • FIG. 4 seen in the direction of arrow IV in FIG. 3 shows the work result which can be achieved with the removal method according to FIG. 2 on a cast steel strand,
  • 5 is a side view of a preferred embodiment of a removal device according to the invention,
  • 6 is a top view of the removal device according to FIG. 5,
  • 7 shows another embodiment of a removal device according to the invention in side view,
  • 8 is a top view of the removal device according to FIG. 7,
  • FIG. 9 shows in a basic spatial representation the assignment of two removal devices according to FIGS. 7 and 8, which are offset by 90 ° to one another, to form a cast steel strand for simultaneous processing of all four strand surfaces,
  • FIG. 10 shows a side view of a further embodiment of a removal device according to the invention,
  • 11 shows the removal device according to FIG. 10 in plan view and
  • Figure 12 seen the removal device according to FIGS. 10 and 11 in the direction of arrow XII of FIG. 10.

Aus Fig. 1 ist ein bogenförmig aus einer üblichen Stranggiessanlage auslaufender StahlgussStrang 1 ersichtlich, der unmittelbar nach dem Übergang in die waagerechte Transportlage einen sogenannten Richttreiber 2 durchläuft, bevor er kontinuierlich auf einen Transportrollgang 3 weitergefördert wird.1 shows a cast steel strand 1 running out of a bow from a conventional continuous casting installation, which passes through a so-called straightening driver 2 immediately after the transition to the horizontal transport position before it is continuously conveyed onto a conveyor roller table 3.

Die Bewegung des Strangs 1 über den Transportrollgang 3 wird mit Hilfe von Treibern 4' und 4" mit einer Geschwindigkeit bewirkt, die auf seine Auslaufgeschwindigkeit aus der Stranggiessanlage abgestimmt ist.The movement of the strand 1 over the transport roller table 3 is effected with the aid of drivers 4 'and 4 "at a speed which is matched to its outlet speed from the continuous casting installation.

Die seitliche Führung des Strangs 1 wird im Bereich zwischen den beiden Treibern 4' und 4" durch Führungsrollen 5' und 5" gewährleistet.The lateral guidance of the strand 1 is ensured in the area between the two drivers 4 'and 4 "by guide rollers 5' and 5".

Hinter dem letzten Treiber 4" und oberhalb des Transportrollgangs 3 ist eine Trennmaschine, beispielsweise in Form einer Brennschneidemaschine, vorgesehen, die eine Unterteilung des kontinuierlich bewegten Strangs 1 in einzelne Strangabschnitte 7 bestimmbarer Länge bewirkt, welche dann auf dem Abtransportrollgang 8 weiter gefördert werden.Behind the last driver 4 ″ and above the transport roller table 3 there is a cutting machine, for example in the form of a flame cutting machine, which divides the continuously moving strand 1 into individual strand sections 7 of a definable length, which are then conveyed further on the removal roller table 8.

Im Bereich des Zutransportrollgangs 3 ist, beispielsweise vor dem ersten Treiber 4', ein Fehlersuchgerät 9, beispielsweise ein Detektor, vorgesehen, welches bzw. welcher die Oberflächen des Stranges 1 auf Fehlerstellen abtastet.A fault locator 9, for example a detector, is provided in the area of the access roller table 3, for example in front of the first driver 4 ', which scans the surfaces of the strand 1 for defects.

Zwischen den beiden Treibern 4' und 4" ist in den Transportrollgang 3 eine Abtragvorrichtung 10, beispielsweise in Form einer Schleifmaschine, eingebaut, die in Abhängigkeit vom Fehlersuchgerät so gesteuert wird, dass sie neben einer einstellbaren konstanten Bearbeitungstiefe jeweils auf die mit Fehlerstellen behafteten Oberflächenbereiche des Strangs 1 mit erhöhter Bearbeitungstiefe zur Einwirkung gebracht wird und diese durch Ausschleifen beseitigt.Between the two drivers 4 'and 4 ", a removal device 10, for example in the form of a grinding machine, is installed in the transport roller table 3, which is controlled as a function of the troubleshooting device in such a way that, in addition to an adjustable, constant machining depth, it also applies to the surface areas of the Strands 1 is brought into effect with increased processing depth and removed by grinding.

Beim Ausführungsbeispiel nach Fig. 1 besteht das Fehlersuchgerät 9 aus zwei Komponenten 9' und 9", von denen die eine der Oberseite des Strangs 1 und die andere der Unterseite desselben zugeordnet ist. Auch die Abtragvorrichtung 10 hat zwei Komponenten, von denen die eine auf die Oberseite und die andere auf die Unterseite des Strangs 1 einwirken kann. Die obere Komponente 10' der, beispielsweise aus einer Schleifmaschine bestehenden, Abtragvorrichtung 10 ist dabei so vorgesehen, dass sie unmittelbar oberhalb einer Rolle des Zutransportrollgangs 3 auf den Strang 1 einwirkt, wobei dieser ein der Anstellkraft der Komponente 10' entgegenwirkendes Widerlager an der Rollgangsrolle findet. Die der Unterseite des Strangs 1 zugeordnete Komponente 10" der, beispielsweise von einer Schleifmaschine gebildeten, Abtragvorrichtung 10 ist hingegen im Bereich zwischen zwei aufeinanderfolgenden Rollen des Zutransportrollgangs 3 vorgesehen, wobei ihrer Anstellkraft das Eigengewicht des Strangs 1 entgegenwirkt.1, the troubleshooting device 9 consists of two components 9 'and 9 ", one of which is assigned to the top of the strand 1 and the other to the underside of the same. The removal device 10 also has two components, one of which is the top and the other can act on the underside of the strand 1. The upper component 10 'of the removal device 10, which consists, for example, of a grinding machine, is provided in such a way that it acts on the strand 1 immediately above a roller of the feed roller table 3, whereby this finds an abutment on the roller table roller which counteracts the contact force of component 10 '. The component 10 "of the removal device 10, for example formed by a grinding machine, assigned to the underside of the strand 1, on the other hand, is provided in the area between two successive rollers of the feed roller table 3, their The counterweight counteracts the dead weight of strand 1 acts.

Das Fehlersuchgerät 9 tastet die Oberfläche des in kontinuierlicher Bewegung befindlichen Strangs 1 ab und löst dabei Anstellbewegungen der Abtragsvorrichtung 10 gegen die Oberflächen des Strangs 1 so aus, dass ein erhöhter Materialabtrag nur in denjenigen Längenbereichen desselben stattfindet, die tatsächlich mit Fehlerstellen behaftet sind. Hierzu kann eine von der Transportgeschwindigkeit des Strangs 1 beeinflusste Verzögerungssteuerung benutzt werden.The troubleshooting device 9 scans the surface of the strand 1 that is in continuous motion and triggers positioning movements of the removal device 10 against the surfaces of the strand 1 in such a way that an increased material removal only takes place in the length ranges of the same that actually have defects. A deceleration control influenced by the transport speed of line 1 can be used for this.

In Fig. 2 der Zeichnung ist die Strang-Bewegungsrichtung durch den Pfeil 11 gekennzeichnet. Der Strang 1 weist dort zwischen seinen beiden Längskanten die Bearbeitungsbreite 12 auf, während er in einer bestimmten Zeiteinheit den durch die Transportgeschwindigkeit bestimmten Transportweg 13 durchläuft.In Fig. 2 of the drawing, the direction of strand movement is indicated by the arrow 11. The strand 1 there has the processing width 12 between its two longitudinal edges, while in a certain time unit it runs through the transport path 13 determined by the transport speed.

Wird die Material-Abtragvorrichtung 10 bzw. eine ihrer beiden Komponenten 10' und 10" in Betrieb gesetzt, dann durchläuft sie relativ zum Strang 1 die in Fig. 2 angedeutete Bewegungsbahn 14, welche die Form einer geschlossenen und im wesentlichen quer zur Strang-Bewegungsrichtung 11 gerichteten Kreuzschleife hat.If the material removal device 10 or one of its two components 10 'and 10 "is put into operation, then it runs relative to the strand 1 through the movement path 14 indicated in FIG. 2, which is in the form of a closed and essentially transverse to the strand movement direction 11 directed cross loop.

Diese Kreuzschleifen-Bewegungsbahn 14 weist zwei gerade Bahnabschnitte 14' und 14" auf, von denen sich der Bahnabschnitt 14' zwischen den Punkten 15' und 16' mit einer Bahnneigung von rechts nach links erstreckt, während der Bahnabschnitt 14" zwischen den Punkten 15" und 16" von links nach rechts geneigt verläuft.This cross-loop movement path 14 has two straight path sections 14 'and 14 ", of which the path section 14' extends between points 15 'and 16' with a path inclination from right to left, while the path section 14" between points 15 " and 16 "from left to right.

Die beiden Bahnabschnitte 14' und 14" sind zwischen den Punkten 16' und 15" durch einen gekrümmten Bahnabschnitt 17' miteinander verbunden, während sie zwischen den Punkten 16" und 15' durch einen entsprechend gekrümmten Bahnabschnitt 17" in Verbindung stehen.The two track sections 14 'and 14 "are connected to one another between the points 16' and 15" by a curved track section 17 ', while they are connected by a correspondingly curved track section 17 "between the points 16" and 15'.

Die Bahnpunkte 15', 15" und 16', 16" der Kreuzschleifen-Bewegungsbahn 14 decken sich etwa mit den Längskanten des Strangs 1, so dass die gekrümmten Bahnabschnitte 17' und 17" sich jeweils mit ihrer gesamten Breite 18' bzw. 18" und ihrer gesamten Höhe 19' bzw. 19" ausserhalb der Breite 12 des Stangs 1 befinden.The path points 15 ', 15 "and 16', 16" of the cross-loop movement path 14 coincide approximately with the longitudinal edges of the strand 1, so that the curved path sections 17 'and 17 "each have their entire width 18' or 18" and their entire height 19 'or 19 "outside the width 12 of the rod 1.

Die Bewegungsrichtung der Material-Abtragvorrichtung 10 längs der Kreuzschleifen-Bewegungsbahn 14 ist durch die eingezeichneten Richtungspfeile angedeutet. Dabei wird deutlich, dass ihre Bewegungsrichtung über die geraden Bahnabschnitte 14' und 14" jeweils eine Komponente in Strang-Bewegungsrichtung 11 hat, während sich ihre Bewegungsrichtung über die gekrümmtn Bahnabschnitte umkehrt, somit also eine Komponente entgegengesezt zur Strang-Bewegungsrichtung 11 aufweist.The direction of movement of the material removal device 10 along the cross-loop movement path 14 is indicated by the direction arrows shown. It is clear here that their direction of movement via the straight path sections 14 ′ and 14 ″ each has a component in the strand movement direction 11, while their direction of movement reverses via the curved path sections, and thus thus has a component opposed to the strand movement direction 11.

Aus Fig. 2 ist auch noch erkennbar, dass der Abstand zwischen den Bahnpunkten 15' und 16" bzw. 15" und 16' etwa gleich dem Transportweg 13 des Strangs 1 in der Zeiteinheit ist, d.h. die Material-Abtragvorrichtung 10 durchläuft den geraden Bahnabschnitt 14' zwischen den Bahnpunkten 15' und 16' sowie den geraden Bahnabschnitt 14" zwischen den Bahnpunkten 15" und 16" jeweils in der gleichen Zeiteinheit wie der Transportweg 13, des Stangs 1. Folglich wird durch die auf die Oberseite und/oder Unterseite des Strangs 1 einwirkende Material-Abtragvorrichtung 10 in der Zeiteinheit eine Bearbeitungsfläche erzeugt, die sich quer zur Strang-Bewegungsrichtung 11 über die gesamte Breite 12 des Strangs 1 erstreckt und eine rechteckige Umrissform hat.From Fig. 2 it can also be seen that the distance between the web points 15 'and 16 "or 15" and 16' is approximately equal to the transport path 13 of the strand 1 in the time unit, i.e. the material removal device 10 passes through the straight track section 14 'between the track points 15' and 16 'and the straight track section 14 "between the track points 15" and 16 "in each case in the same time unit as the transport path 13 of the rod 1. Consequently, through the material removal device 10 acting on the top and / or underside of the strand 1 generates in the unit of time a processing surface which extends across the entire width 12 of the strand 1 and has a rectangular outline shape, transverse to the strand movement direction 11.

In Fig. 3 ist ein Strang 1 gezeigt, welcher mit mehreren in Strang-Bewegungsrichtung 11 aufeinanderfolgenden Bearbeitungsflächen 20', 20II, 20"', 20lV und 20v versehen ist. Dabei wurden die Bearbeitungsflächen 20', 20III und 20v jeweils während eines Hingangs der Material-Abtragvorrichtung 10, also während der Bewegung derselben längs des Bahnabschnitts 14', erzeugt, während die Bearbeitungsflächen 20", 20lV jeweils bei einem Rückgang der Material-Abtragvorrichtung10, also bei deren Bewegung über den Bahnabschnitt 14", gebildet worden sind.3 shows a strand 1 which is provided with a plurality of machining surfaces 20 ', 20 II , 20 "', 20 lV and 20 v which follow one another in the strand movement direction 11. The machining surfaces 20 ', 20 III and 20 v each while the material removal device 10 is moving, that is to say while it is moving along the web section 14 ', while the processing surfaces 20 ", 20 lV each occur when the material removal device 10 decreases, that is to say when it moves over the web section 14", have been formed.

Damit durch die Abtragvorgänge an den Oberflächen des Strangs 1 eine einwandfreie ebene Flächenbildung stattfindet, ist, wie die Fig. 3 und 4 erkennen lassen, Vorsorge getroffen, dass sich aufeinanderfolgende Bearbeitungsbereiche 20', 20" .... 20v, jeweils an ihren Rändern streifenförmig überlappen, so dass zwischen aufeinanderfolgenden Bearbeitungsbereichen keine Flächen- überhöhungen stehen bleiben können.3 and 4, precaution is taken to ensure that successive machining areas 20 ', 20 "... 20 v , each on their Overlap the edges in strips so that no surface overlaps can remain between successive machining areas.

In den Fig. 5 und 6 ist eine bevorzugte Ausführungsform einer Vorrichtung 21 zum kontinuierlichen mechanischen Abtragen von Material von Strangguss-Oberflächen dargestellt. Bei ihr bestehen die den Materialabtrag an den Oberflächen des Strangs 1 bewirkenden Werkzeuge aus drehangetriebenen Schleifscheiben 22',22", von denen jede an einem um eine horizontale Achse 23' bzw. 23" beweglich aufgehängten Schwenkarm 24' bzw. 24" gelagert ist. Die Achsen 23' und 23" sitzen dabei im Abstand übereinander in einem Rahmen 25, welcher einerseits die Antriebsmotoren 26' und 26" für die Schleifenscheiben 22' und 22" trägt, und an dem undererseits getrennt betätigbare Kraftantriebe 27', 27", beispielsweise Druckmittelzylinder, verankert sind, welche Anstellvorrichtungen für die Schleifscheiben 22' und 22" gegen den Strang 1 bilden.5 and 6 show a preferred embodiment of a device 21 for the continuous mechanical removal of material from continuous casting surfaces. With it, the material removal on the surfaces of the strand 1 consists of rotating driven grinding wheels 22 ', 22 ", each of which is mounted on a swivel arm 24' or 24" movably suspended about a horizontal axis 23 'or 23 ". The axes 23 'and 23 "are spaced one above the other in a frame 25 which on the one hand carries the drive motors 26' and 26" for the loop disks 22 'and 22 ", and on the other hand separately operable power drives 27', 27", for example Pressure medium cylinders are anchored, which form adjusting devices for the grinding wheels 22 ′ and 22 ″ against the strand 1.

Der Rahmen 25 ist über einen Wagen oder Schlitten 28 an einer Führungstraverse 29 aufgehängt, die sich quer zur Strang-Bewegungsrichtung 11 erstreckt und von einem torartigen Ständer 30 getragen wird, der beispielsweise mittels eines Schlittens 31 parallel zur Strang-Bewegungsrichtung 11 verschoben werden kann.The frame 25 is suspended via a carriage or slide 28 on a guide cross-member 29 which extends transversely to the strand movement direction 11 and is carried by a gate-like stand 30 which can be displaced parallel to the strand movement direction 11, for example by means of a slide 31.

Aus Fig. 6 ist noch erkennbar, dass die Schleifscheiben 22' und 22" relativ zur Strang-Bewegungsrichtung 11 eine Neigungslage haben, die von 90° abweicht und beispielsweise 60° beträgt. Erkennbar ist aber auch, dass die obere Schleifscheibe 22' in einem Bereich oberhalb der Rollgangsrolle des Zutransportrollgangs 3 arbeitet, während die untere Schleifscheibe 22" sich im Bereich zwischen zwei aufeinanderfolgenden Rollgangsrollen befindet.6 that the grinding wheels 22 'and 22 "have an inclined position relative to the strand movement direction 11 which deviates from 90 ° and is, for example, 60 °. However, it can also be seen that the upper grinding wheel 22' is in one The area above the roller table roller of the feed roller table 3 operates, while the lower grinding wheel 22 ″ is located in the area between two successive roller table rollers.

Die (nicht gezeigten) Antriebsvorrichtungen für die Querbewegung des Rahmens 25 im torartigen Ständer 30 und die Längsbewegung des torartigen Ständers auf dem Schlitten 31 sind so aufeinander abgestimmt und ausgelegt, dass die Schleifscheiben 22', 22" während eines vollständigen Arbeitszyklus eine Kreuzschleifen-Bewegungsbahn 14 gemäss Fig. 2 durchlaufen und dabei am kontinuierlich bewegten Strang 1 zwei aneinanderstossende bzw. sich teilweise überdekkende Bearbeitungsbereiche 20', 20" usw. gemäss den Fig. 3 und 4 erzeugen. Der torartige Ständer 30 und der darin aufgehängte Rahmen 25 arbeiten dabei nach Art eines Kreuzschlittens zusammen, derart, dass ihre sich überlagernden Verstellbewegungen miteinander die Kreuzschleifen-Bewegungsbahn 40 gemäss Fig. 2 erzeugen.The drive devices (not shown) for the transverse movement of the frame 25 in the gate-like stand 30 and the longitudinal movement of the gate-like stand on the carriage 31 are coordinated and designed in such a way that the grinding wheels 22 ′, 22 ″ form a cross-loop movement path 14 during a complete working cycle 2 and in doing so produce on the continuously moving strand 1 two abutting or partially overlapping processing areas 20 ', 20 "etc. according to FIGS. 3 and 4. The gate-like stand 30 and the frame 25 suspended therein work together in the manner of a cross slide, in such a way that their overlapping adjustment movements produce the cross loop movement path 40 according to FIG. 2.

Für den Fall, dass auch eine Materialabtragung an den schmalen Kantenflächen des Strangs 1 vorgenommen werden soll, können gemäss Fig. 6 noch zwei zusätzliche Schleifenvorrichtungen 32', 32" vorgesehen werden, die relativ zur Transportebene des Strangs 1 so schräg gestellt sind, dass ihre an Schwenkarmen 33' bzw. 33" lagernden Schleifscheiben 34', 34" mit einer gegen die Horizontale geneigten Lge auf die schmalen Kantenflächen des Strangs 1 einwirken.In the event that material is also removed from the narrow edge surfaces of strand 1 6, two additional loop devices 32 ', 32 "can be provided, which are inclined relative to the transport plane of strand 1 such that their grinding wheels 34', 34" mounted on swivel arms 33 'and 33 " act on the narrow edge surfaces of strand 1 with a length inclined towards the horizontal.

In den Fig. 7 und 8 der Zeichnung ist eine Abtragvorrichtung 35 dargestellt, welche gegenüber derjenigen nach den Fig. 5 und 6 einen vereinfachten Aufbau hat und die zum Bearbeiten von im Querschnitt quadratischen Stranggussknüppeln 36 zum Einsatz gebracht werden kann. Hierbei ist die Breite der Schleifscheiben 37' und 37" so bemessen, dass sie die gesamte Breite einer Knüppel-Seitenfläche überdecken und einfach dadurch, dass sie mit Hilfe ihrer Schwenkarme 38' und 38" gegen den Knüppel angestellt werden, eine Materialabtragung an diesem über seine ganze Breite bewirken. Der die Schwenkarme 38' und 38" um die horizontalen Achsen 39' und 39" lagernde sowie die Antriebsmotoren 40' und 40" für die Schleifscheiben 37', 37"tragende Rahmen 41 kann dabei stationär angeordnet werden, und zwar vorzugsweise derart, dass die Schwenkebene der Schwenkarme 38' und 38" eine gegen die Längsachse des Knüppels 36 spitzwinklig geneigte Lage hat.7 and 8 of the drawing, a removal device 35 is shown, which has a simplified structure compared to that according to FIGS. 5 and 6 and which can be used for processing continuous cast billets 36 which are square in cross section. Here, the width of the grinding wheels 37 'and 37 "is dimensioned such that they cover the entire width of a side face of the billet and simply because they are positioned against the billet with the aid of their swivel arms 38' and 38", material is removed from the latter effect its full breadth. The frame 41 supporting the swivel arms 38 'and 38 "about the horizontal axes 39' and 39" and the drive motors 40 'and 40 "for the grinding wheels 37', 37" can be arranged stationary, preferably in such a way that the Pivot plane of the pivot arms 38 'and 38 "has a position inclined at an acute angle to the longitudinal axis of the stick 36.

Aus Fig. 9 ist schliesslich noch ersichtlich, dass auch die Möglichkeit besteht, zwei Abtragvorrichtungen 35 der in den Fig. 7 und 8 gezeigten Bauart relativ zueinander so anzuordnen, dass gleichzeitg auf alle vier Seitenflächen des Stranggussknüppels 36 Schleifscheiben 37' und 37" bzw. 37' und 37" zur Einwirkung kommen.Finally, it can be seen from FIG. 9 that there is also the possibility of arranging two removal devices 35 of the type shown in FIGS. 7 and 8 relative to one another such that 36 grinding disks 37 ′ and 37 ″ or, respectively, on all four side surfaces of the continuous casting billet 37 'and 37 "come into effect.

Es sei noch darauf hingewiesen, dass es auch im Rahmen der Erfindung liegt, mehrere Material-Abtragvorrichtungen, beispielsweise in der aus den Fig. 5 und 6 ersichtlichen Bauart, in Strang- Bewegungsrichtung 11 hintereinander anzuordnen, und zwar in solcher Art, dass diese entweder abwechselnd betrieben werden können oder aber auch gleichzeitig einsetzbar sind. Letzteres könnte sich besonders dann als wichtig erweisen, wenn die Transportgeschwindigkeit des Strangs 1 im Vergleich zur Arbeitsgeschwindigkeit der Abtragvorrichtung verhältnismässig gross ist und diese dann in der Zeiteinheit nur einen Teil der gesamten Breite des Strangs 1 überfahren kann. Beide Abtragvorrichtungen übernehmen dann jeweils nur die Bearbeitung der halben Breite des Strangs 1 und werden so aufeinander abgestimmt gesteuert, dass sie gemeinsam jeweils einen rechteckigen Bearbeitungsbereich über die Gesamtbreite bestreichen.It should also be pointed out that it is also within the scope of the invention to arrange a plurality of material removal devices, for example in the type shown in FIGS. 5 and 6, one behind the other in the strand movement direction 11, in such a way that they either can be operated alternately or can also be used simultaneously. The latter could prove to be particularly important if the transport speed of the strand 1 is comparatively high in comparison to the working speed of the removal device and this can then only travel over part of the entire width of the strand 1 in the time unit. Both removal devices then only take over the processing of half the width of the strand 1 and are controlled in a coordinated manner so that they each cover a rectangular processing area over the entire width.

Die in den Fig. 5 und 6 dargestellte Vorrichtung 21 zum kontinuierlichen mechanischen Abtragen von Material von Strangguss-Oberflächen kann auch so ausgebildet werden, dass der torartige Ständer 30 um eine Vertikalachse 30'-30' verdrehbar auf einer kreisförmigen Führungsbahn 30" ruht. Während der Querbewegung der die Schleifscheiben 22' und 22" tragenden Schwenkarme 24' und 24" mittels des Rahmens 25 wird dann der torartige Ständer 30 um die Vertikalachse 30'-30' innerhalb eines vorgegebenen, jeweils von der Breite 12 des zu bearbeitenden Strangs 1 abhängigen, Winkelbereichs hin- und hergedreht und damit ein Bewegungsablauf erzeugt, der demjenigen ähnlich ist, welcher sich bei Benutzung des parallel zur Strang-Bewegungsrichtung 11 verschiebbaren Schlittens 31 ergibt. Ein Unterschied im Bewegungsablauf ergibt sich bei der Abtragvorrichtung 21 mit um die Vertikalachse 30'-30' verdrehbarem, torartigem Ständer 30 gegenüber einem solchen mit mittels eines Schlittens 31 verfahrbaren Ständers 30 lediglich insofern, als die von den Schwenkarmen 24', 24" getragenen Schleifscheiben 22' und 22" fortwährend ihre Winkellage relativ zur Strangbewegungsrichtung 11 verändern.The device 21 shown in FIGS. 5 and 6 for the continuous mechanical removal of material from continuous casting surfaces can also be designed in such a way that the gate-like stand 30 rests on a circular guideway 30 ″ rotatable about a vertical axis 30'-30 ' the transverse movement of the swivel arms 24 'and 24 "carrying the grinding wheels 22' and 22" by means of the frame 25 then the gate-like stand 30 about the vertical axis 30'-30 'within a predetermined, depending on the width 12 of the strand 1 to be processed , Angular range rotated back and forth and thus produces a movement sequence which is similar to that which results when using the slide 31 which is displaceable parallel to the strand movement direction 11. A difference in the movement sequence results in the removal device 21 with about the vertical axis 30 ′. 30 'rotatable, gate-like stand 30 compared to one with a stand which can be moved by means of a slide 31 30 only insofar as the grinding wheels 22 'and 22 "carried by the swivel arms 24', 24" continuously change their angular position relative to the direction of strand movement 11.

Vorteilhaft bei einer Abtragvorrichtung 21 mit um die Vertikalachse 30'-30' verdrehbarem Ständer 30 ist jedoch deren vereinfachter Aufbau, weil eine parallel zur Strang-Bewegungsrichtung 11 verlaufende Führungsbahn, wie sie für den Schlitten 31 benötigt wird, eingespart werden kann.An advantage of a removal device 21 with a stand 30 which can be rotated about the vertical axis 30'-30 'is, however, its simplified structure, since a guide track running parallel to the strand movement direction 11, as is required for the slide 31, can be saved.

In den Fig. 10 bis 12 der Zeichnung ist eine Material-Abtragvorrichtung 51 gezeigt, bei der die den Materialabtrag an den Oberflächen des Strangs 1 bewirkenden Werkzeuge wiederum aus drehangetriebenen Schleifscheiben 52' und 52" bestehen, von denen jede an einem um eine horizontale Achse 53' bzw. 53" beweglich aufgehängten Schwenkarm 54' bzw. 54" gelagert ist. Jede der Achsen 53' und 53" sitzt hierbei in einem Lagerbock 55' bzw. 55", welcher auch den Antriebsmotor 56' bzw. 56" für die Schleifscheiben 52' bzw. 52" trägt und an dem ferner auch die getrennt betätigbaren Kraftantriebe 57' bzw. 57", bspw. Druckmittelzylinder, verankert sind, welche als Anstellvorrichtungen für die Schleifscheiben 52' und 52" gegen den Strang 1 dienen.10 to 12 of the drawing, a material removal device 51 is shown, in which the tools causing the material removal on the surfaces of the strand 1 in turn consist of rotationally driven grinding wheels 52 ′ and 52 ″, each of which is arranged around a horizontal axis 53 'or 53 "movably suspended pivot arm 54' or 54" is mounted. Each of the axes 53 'and 53 "sits in a bearing block 55' or 55", which also the drive motor 56 'or 56 "for the Grinding disks 52 'and 52 "and on which also the separately actuatable power drives 57' and 57", for example pressure medium cylinders, are anchored, which serve as adjusting devices for the grinding disks 52 'and 52 "against the strand 1.

Der Lagerbock 55' ist an einem Wagen 58 aufgehängt, der auf einer ortsfesten Schienenbahn 59' läuft, die sich quer zur Strang-Bewegungsrichtung 11 erstreckt. Dabei ist der Lagerbock 55' um eine vertikale Achse 60' winkelverdrehbar zum Wagen 58' gehalten.The bearing block 55 'is suspended from a carriage 58 which runs on a fixed rail track 59' which extends transversely to the strand movement direction 11. The bearing block 55 'is held rotatable about a vertical axis 60' relative to the carriage 58 '.

Der Lagerbock 55" ruht auf einem Wagen 58", der ebenfalls auf einer quer zur Strang-Bewegungsrichtung 11 gerichteten Schienenbahn 59" läuft, wobei auch der Lagerbock 55" um eine vertikale Achse 60" winkelverdrehbar auf dem Wagen 58" gehalten ist.The bearing block 55 "rests on a carriage 58", which likewise runs on a rail track 59 "oriented transversely to the strand movement direction 11, the bearing block 55" also being held on the carriage 58 "so that it can be rotated about a vertical axis 60".

Die Schienenbahn 59' und der an dieser quer verfahrbar aufgehängte Teil 51' der Abtragvorrichtung 51 befindet sich insgesamt oberhalb der Transportebene des Strangs 1, während die Schienenbahn 59" und der auf dieser ruhende Teil 51" der Abtragvorrichtung sich unterhalb dieser Transportebene befindet. Die beiden Teile 51' und 51" der Abtragvorrichtung 51 machen einen voneinander unabhängigen Betrieb möglich. Sie können jedoch im Bedarfsfall auch gleichzeitig und gegebenenfalls in ihrem Betriebsablauf synchron zum Einsatz gebracht werden.The rail track 59 'and the part 51' of the removal device 51 suspended transversely on it is located overall above the transport plane of the strand 1, while the rail track 59 "and the part 51" of the removal device resting thereon are located below this transport level. The two parts 51 'and 51 "of the removal device 51 enable independent operation. However, if necessary, they can also be used simultaneously and, if necessary, synchronously in their operating sequence.

Die Arbeitsweise der Abtragvorrichtung 51 nach den Fig. 10 bis 12 ist an sich die gleiche wie diejenige der Abtragvorrichtung 21 nach den Fig. 5 und 6, deren torartiger Ständer 30 um die Vertikalachse 30'-30' winkelverdrehbar angeordnet ist.The mode of operation of the removal device 51 according to FIGS. 10 to 12 is in itself the same as that of the removal device 21 according to FIGS. 5 and 6, whose gate-like stand 30 is arranged such that it can be rotated about the vertical axis 30'-30 '.

Auch bei der Ausführungsform nach den Fig. 10 bis 12 ist es durchaus denkbar, mehrere Materialabtragvorrichtungen 51 in Strang-Bewegungsrichtung 11 hintereinander so anzuordnen, dass diese entweder abwechselnd betrieben werden können oder aber auch gleichzeitig einsetzbar sind.In the embodiment according to FIGS. 10 to 12, it is also conceivable to arrange several material removal devices 51 one behind the other in the strand movement direction 11 in such a way that they can either be operated alternately or can also be used simultaneously.

Claims (17)

1. Method for the continuous mechanical removal of material from continuous casting surfaces in the hot state, in which the hot strand (1) before the transverse parting (6) is machined simultaneously on mutually opposite sides, for example on the upper and the lower side, by machining tools (10), for example grinding discs (10', 10"), planing blades or milling tools, moving to and fro between the strand edges, characterised thereby, that the removal operation is carried out each time on tracks (14', 14"), which extend obliquely in strand movement direction (11) and are inclined alternately to right and left, and the removal operation (10, 10', 10") is in that case intensified in dependence on arising surface faults.
2. Method according to claim 1, characterised thereby, the continuous casting surfaces are constantly scanned (9,9', 9") for fault locations in their strand movement direction (11) and the removal operation (10, 10', 10") is intensified through arising fault signals.
3. Method according to one of the claims 1 and 2, characterised thereby, that the removal operation (10, 10', 10") is effected on an closed crossed-loop, track lying transversely to the strand movement direction (11) and the crossed-loop track (14) is in that case led by its arcuate track portions (17', 17") out 18', 18"; 19', 19") beyond the strand edges.
4. Method according to one of the claims 1 and 2, characterised thereby, that the resetting of inclination for the tracks (14', 14") is accelerated as well as performed in direction opposite to the strand movement direction (11) in the arcuate track portions (17', 17") of the crossed-loop track (14).
5. Method according to one of the claims 1 to 4, characterised thereby, that the crossed-loop track (14) of the removal operation (10, 10', 10") is derived from a pivotal movement of the tool carrier performed alternately in and against the strand movement direction (11).
6. Apparatus for the continuous mechanical removal of material from continuous casting surfaces in the hot state, in which the hot strand (1) before the transverse parting (6) is exposed to the influence of machining tools (10, 10', 10" or 22', 22" or 37', 37" or 37', 37"), for example grinding discs, planing blades or milling tools, moving to and fro between the strand edges for the performance of the method according to one of the claims 1 to 5, characterised thereby, that the machining tools (10, 10', 10" or 22', 22" or 37', 37" or 37', 37") sit on a feed slide or feed carriage (15, 28, 29, 30, 31), which is drivable to and fro along a movement path (14', 14") inclined in strand movement direction (11) and reversible in its direction of inclination, that a fault-seeking device (9, 9', 9"), for example a detector or a video device, is arranged (fig. 1) in front of the machining tools (10, 10', 10" or 22', 22" or 37'. 37" or 37', 37") and that the incidence movements of the machining tools (10, 10', 10" or 22', 22" or 37', 37" or 37', 37") are settable against the surfaces of the strand (1) in dependence on fault signals by way of the fault-seeking device (9, 9', 9").
7. Apparatus according to claim 6, characterised thereby, that the movement path (14) for the feed slide or feed carriage (15, 28, 29, 30, 31) extends beyond (fig. 2) the strand edges and is reversible (17', 17") in the direction of inclination each time tools (10, 10', 10" or 22', 22") are disposed outside the strand edges.
8. Apparatus according to one of the claims 6 and 7, characterised thereby, that the tools (10', 10" or 22', 22" or 37', 37" or 37', 37"), which are arranged on mutually opposite sides of the strand (1), are arranged (figs. 2 and 6) staggered one relative to the other in strand movement direction (11
9. Apparatus according to claim 8, in which the strand runs over a transport roller train, characterised thereby, that the tool (10' or 22' or 37') associated with the upper strand side lies obove a roller train roller, whilst the tool (10", 22", 37") associated with the lower strand side is arranged between two roller train rollers.
10. Apparatus according to one of the claims 6 to 9, characterised thereby, that the tools (22', 22"; 37', 37") are borne at the free end of pivot arms (24', 24"; 38', 38"), which are carried by a cross- slide (25, 28, 29, 30, 31), the one slide part (25, 28) of which is movable to and fro at constant speed transversely to the strand movement direction (11), whilst the other slide part (29, 30, 31) runs at lower speed during the forward travel than during the return travel parallel to the strand movement direction (11) and that the drives of both the slide parts (25, 28 or 29, 30, 31) are drivingly connected each with the other.
11. Apparatus according to one of the claims 7 to 10, characterised thereby, that the one slide part (25, 28) is a frame, in which the pivot arms (24', 24") are individually suspended (23', 23") to be settable by way of power drives (27', 27"), whilst the other slide part (29, 30, 31) consists of a gate-like stand (30), which carries at least one transversely extending guide cross-beam (29), at which the one slide part (25, 28) is suspended (fig. 5).
12. Apparatus according to one of the claims 7 to 11, characterised thereby, that the tools (22', 22") are borne at the free end of pivot arms (24', 24"), which are on the one hand individually suspended about horizontal axles (23', 23") to be settable by way of power drives (27', 27") and on the other hand pivotally movable alternately in and against the strand movement direction (11) about a vertical axle (30') lying at a lateral spacing outside the strand passage region.
13. Apparatus according to claim 12, characterised thereby, that the pivot arms (24', 24") are suspended (23', 23") in a frame (25), which sits displaceably at at least one transversely extending guide cross-beam (29) in a gate-like stand (30), which is rotatable about the vertical axle (30') (fig. 5).
14. Apparatus according to one of the claims 7 to 13, characterised thereby, that two pivot arm pairs, of like kind and equipped with tools, are provided at a spacing one behind the other.
15. Apparatus according to one of the claims 7 to 14, characterised thereby, that two pivot arm pairs, equipped with tools, are provided in two positions displaced in angle relative to the strand crossection and each relative to the other and are placeable simultaneously onto the continuous casting surfaces.
16. Apparatus according to one of the claims 7 to 15, characterised thereby, that the tolls (10', 10", or 22', 22" or 37', 37"), which are arranged on mutually opposite sides of the strand (1), are suspended at carrying and guiding organs separated constructionally and/or in terms of drive one from the other (figs. 10 to 12).
17. Apparatus according to claim 16, characterised thereby, that the carrying organs consist of rail tracks directed transversely to the strand movement direction (11), whilst the guiding organs are formed by carriages, which are movable at the rail tracks and each of which holds a bearing block, which is rotatable about a vertical axis and in which a pivot arm is suspended, which at its free end bears the tool and is settable on around a horizontal axis.
EP81108912A 1980-11-28 1981-10-26 Method of and installation for the continuous mechanical removal of material form casting strand surfaces Expired EP0053274B1 (en)

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AT81108912T ATE10913T1 (en) 1980-11-28 1981-10-26 METHOD AND DEVICE FOR CONTINUOUS MECHANICAL REMOVAL OF MATERIAL FROM CONTINUOUS CASTING SURFACES.

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DE19803044832 DE3044832A1 (en) 1980-11-28 1980-11-28 METHOD AND DEVICE FOR CONTINUOUS MECHANICAL REMOVAL OF MATERIAL FROM CONTINUOUS CASTING SURFACES
DE3044832 1980-11-28

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CN101879695A (en) * 2010-06-23 2010-11-10 常州明豪新金属材料有限公司 Device for removing oxide layer on shear surface of copper belt
CN103406824A (en) * 2013-09-02 2013-11-27 丹阳利华电子有限公司 Copper belt shearing surface oxide layer removing device
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US8708775B2 (en) 2009-03-19 2014-04-29 Sms Logistiksysteme Gmbh Method and apparatus for grinding a continuously casting product
US8900035B2 (en) 2009-03-19 2014-12-02 Sms Logistiksysteme Gmbh Method and device for grinding a continuous casting product
CN101879695A (en) * 2010-06-23 2010-11-10 常州明豪新金属材料有限公司 Device for removing oxide layer on shear surface of copper belt
CN103406824A (en) * 2013-09-02 2013-11-27 丹阳利华电子有限公司 Copper belt shearing surface oxide layer removing device

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EP0053274A1 (en) 1982-06-09
DE3167977D1 (en) 1985-02-07
DE3044832A1 (en) 1982-07-01
ATE10913T1 (en) 1985-01-15

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