EP0754504A1 - Abrading device - Google Patents

Abrading device Download PDF

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Publication number
EP0754504A1
EP0754504A1 EP96110712A EP96110712A EP0754504A1 EP 0754504 A1 EP0754504 A1 EP 0754504A1 EP 96110712 A EP96110712 A EP 96110712A EP 96110712 A EP96110712 A EP 96110712A EP 0754504 A1 EP0754504 A1 EP 0754504A1
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EP
European Patent Office
Prior art keywords
grinding
rollers
grinding rollers
shaft
shafts
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.)
Withdrawn
Application number
EP96110712A
Other languages
German (de)
French (fr)
Inventor
Günter Dr. Kneppe
Klaus-Dieter Haberkamm
Wolfgang Prof. Dr. Rohde
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SMS Siemag AG
Original Assignee
SMS Schloemann Siemag AG
Schloemann Siemag AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SMS Schloemann Siemag AG, Schloemann Siemag AG filed Critical SMS Schloemann Siemag AG
Publication of EP0754504A1 publication Critical patent/EP0754504A1/en
Withdrawn legal-status Critical Current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
    • B24B29/00—Machines or devices for polishing surfaces on work by means of tools made of soft or flexible material with or without the application of solid or liquid polishing agents
    • B24B29/005—Machines or devices for polishing surfaces on work by means of tools made of soft or flexible material with or without the application of solid or liquid polishing agents using brushes
    • 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
    • B21B45/06—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 of strip material
    • 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
    • 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
    • B24B7/00—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor
    • B24B7/10—Single-purpose machines or devices
    • B24B7/12—Single-purpose machines or devices for grinding travelling elongated stock, e.g. strip-shaped work
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D13/00—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor
    • B24D13/02—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor acting by their periphery
    • B24D13/04—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor acting by their periphery comprising a plurality of flaps or strips arranged around the axis

Definitions

  • the invention relates to a device for grinding the surfaces of continuously cast slabs, also thin slabs and / or hot-rolled or hot-rolled strips, during their feed in the rolling mill to remove objectionable surface sections such as scale layers and / or texture defects or the like by means of rollers spanning slab surfaces.
  • Such a grinding device is e.g. B. become known from DE-OS 36 00 144.
  • one sanding roller is arranged at a right angle above and below the material to be sanded, the length of the sanding rollers exceeding the width of the sanded material.
  • the grinding rollers have a so-called CVC contour, so that the surface design of the material to be ground can be influenced by axially displacing the grinding rollers.
  • the grinding device must first and foremost remove material, and the possibility of influencing the surface shape takes a back seat.
  • the sanding roller is no longer sufficient to ensure removal. Since the grinding roller lies on the surface of the grinding material over a large area, it would only be able to achieve a corresponding material removal under considerable contact forces.
  • the rigid grinding roller - disregarding roller bending - primarily only reaches the most distant pieces of material to be ground will. If there are flaws to be ground out in small recesses, these flaws cannot be ground out with the rigid roller.
  • belt grinding machines have also already been proposed, with which smaller and deeper areas of the material to be grinded can also be processed, but with which, likewise, no sufficient grinding pressure is applied to the material Grinding material can be applied.
  • the invention is therefore based on the object of developing a grinding device of the generic type in such a way that all areas of the grinding material can be processed without problems and that a sufficiently high grinding pressure can be exerted on the grinding material.
  • the subdivision of the grinding roller into several grinding rollers means that the large, rigid support of the grinding wheel on the material to be ground is avoided.
  • the resilient lamellae in connection with the high speeds of the shaft carrying them, ensure that the outer contour of the grinding rollers corresponds to the usual roller crowns due to flying forces, but that the individual lamellae are able to adapt to the surfaces of the material to be grinded in the pressure area, so that they do not, as in the case of Generic rigid roller is first sanded the most protruding area of the material to be ground and only when this is ground, the not so protruding areas, but that all areas of the material to be ground can be ground simultaneously and material can be removed accordingly at all points.
  • the drive and the adjustment of the grinding rollers take place via the common shaft, so that a large-area, uniform grinding of the grinding material is possible with relatively little effort.
  • the lamellae according to claim 1 can be brushes or, as claimed in claim 2, so-called lamella grinding rollers, in which only the free end areas of the lamellae contribute to the grinding process. If, as claimed in claim 3, spacer elements are provided between adjacent fins, the individual fins can cool better in the air surrounding them. However, there is also the possibility, as generally proposed in claim 10, to provide coolant nozzles for the fins.
  • the grinding rollers In order to be able to reduce the contact forces and to stress the lamellae less, there is the possibility according to claim 4 to provide distances between the grinding rollers.
  • the grinding rollers must be periodically shifted axially in this case, taking care that the lamellas of the outer grinding rollers are not moved completely over the edge area of the grinding material, otherwise the grinding rollers will move back the flanks of which would be moved against the material to be ground, which could destroy the lamellae.
  • the axial displacement speed should be adapted to the feed speed of the material to be ground so that all areas of the material to be ground can actually be processed.
  • a further possibility for processing complete grinding material although there are gaps between the grinding rollers and no axial displacement of the rollers is required, is shown in claim 5, according to which a second shaft is arranged in the grinding material transport direction behind the first shaft, the However, grinding rollers of the second shaft are aligned with the spaces of the first shaft that are free of grinding rollers.
  • the grinding rollers have a certain service life, after which they have to be replaced. To ensure continuous operation of the To ensure grinding device, it is therefore proposed according to claim 6 to provide several shafts equipped with grinding rollers one after the other, so that the used grinding rollers can be exchanged with corresponding changing devices, while the grinding rollers arranged on the other shafts can be used and used for grinding.
  • suction nozzles arranged at least above the grinding material are proposed.
  • the material removed from the grinding rollers located below the material to be ground falls down due to gravity and can be collected with suitable means.
  • the waves are exposed to strong radiant heat, whereby the waves arranged above the material to be ground must also withstand strong convection heat. In addition, there is the heat which arises during grinding and is to be dissipated from the lamellae, so that it can be useful, as proposed in claim 11, to cool the shaft.
  • the shaft has an angle deviating from 90 ° to the longitudinal direction of movement of the grinding material.
  • FIG. 1 shows a thin slab coming from a continuous caster, not shown, as grinding material 1, which moves in the direction of arrow 2 in a rolling mill, not shown. Above and below the grinding material 1, grinding devices 3 to 3 '' '' are arranged. Corresponding grinding devices can of course also be provided on the edges of the grinding material 1.
  • the grinding device 3 to 3 '' '' have shafts 7 mounted on stands 4, 4 'and chocks 5, 5' in stands 6, 6 '.
  • the shafts 7 can be driven in rotation by motors 8.
  • the shafts 7 can be shifted periodically in the axial direction by means of a shifting device 9.
  • the shaft 7 can also be arranged in the axial direction, such as. B. shown in the grinding device 3 '.
  • the grinding device 3 has a multiplicity of grinding rollers 10, 10 ', 10'' Vietnamese arranged closely next to one another, which cover the entire surface of the grinding material 1. The entire surface of the grinding material 1 can thus be processed.
  • the grinder 3 therefore basically does not require a displacement drive 9.
  • the displacement drive 9 proposed here is only used to improve the uniformity of the grinding.
  • the grinding device 3 ' has grinding rollers 10, 10', 10 '' Vietnamese between which distances are provided. Cooling air for the grinding rollers can be blown in in the area of the distances.
  • a pump 11 is used, which is connected to the nozzles 13 via lines 12.
  • the grinding device 3 ' is assigned, for example, a suction nozzle 20 which is connected to a pump 21, by means of which the ground material particles can be suctioned off.
  • These cooling and / or suction devices can of course also be assigned to the other grinding devices.
  • the grinding device 3 ′′ also has distances between the individual grinding rolls 10, 10 ′, 10 ′′ ′′, the grinding rolls 10 of the grinding device 3 ′′ being aligned with the free spaces between the grinding rolls 10 of the grinding device 3 ′. Furthermore, the grinding device 3 ′′ shows a coolant pump 14, from which coolant can be supplied to the corresponding shafts 7 via corresponding lines. This cooling device can also be assigned to each of the other grinding devices.
  • the grinding device 3 '' ' shows that even with a few grinding rollers and a corresponding axial displacement, sufficient removal from the grinding material 1 is ensured.
  • the shaft 7 has further, adjustable bearings 15.
  • the grinding device 3 '''' has a shaft 7 which is arranged at an angle to the other shafts 7. Grinding roller arrangements can of course be provided on this inclined shaft 7, as shown in the grinding devices 3 to 3 '''. Cooling devices 11 to 15 can also be assigned to this grinding device 3 ''''. For continuous operation, several of the grinding devices 3 '''' can be arranged one behind the other, whereby the angle to the direction of travel of the grinding material 1 can be identical for all shafts 7 or can also be inclined differently or in opposite directions.
  • FIG. 2 shows a grinding roller 10, which consists of a hub body 16, from whose jacket 17 lamellae 18 extend. Spacers 19 are provided between the fins 18, which increase the spacing of the fins 16 from one another, so that better cooling of the individual fins 18 is possible.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Grinding-Machine Dressing And Accessory Apparatuses (AREA)

Abstract

The device has a continuous shaft (7) instead of rollers, with a number of non-turnably connected grinding rollers (10) positioned axially behind each other. Each grinding roller has a central hub body. Flexible lamelles with a grinding medium projects from the hub body jacket. The lamelles extend across the full width of the hub body, and distance elements are located between them. The shaft is periodically moved axially. The device may consist of two shafts, with grinding rollers relatively offset.

Description

Die Erfindung betrifft eine Vorrichtung zum Schleifen der Oberflächen von stranggegossenen Brammen, auch Dünnbrammen und/oder warmgewalzten bzw. warmzuwalzenden Bändern, während ihres Vorschubes im Walzwerk zum Entfernen von zu beanstandenen Oberflächenabschnitten wie Zunderschichten und/oder Texturfehlern oder dergleichen mittels Brammenoberflächen übergreifenden Walzen.The invention relates to a device for grinding the surfaces of continuously cast slabs, also thin slabs and / or hot-rolled or hot-rolled strips, during their feed in the rolling mill to remove objectionable surface sections such as scale layers and / or texture defects or the like by means of rollers spanning slab surfaces.

Eine derartige Schleifvorrichtung ist z. B. durch die DE-OS 36 00 144 bekanntgeworden. Hier ist je eine Schleifwalze im rechten Winkel oberhalb und unterhalb des Schleifgutes angeordnet, wobei die Länge der Schleifwalzen die Breite des Schleifgutes übersteigt. Die Schleifwalzen besitzen sogenannte CVC-Kontur, so daß sich durch axiales Verschieben der Schleifwalzen die Oberflächengestaltung des Schleifgutes beeinflussen läßt.Such a grinding device is e.g. B. become known from DE-OS 36 00 144. Here, one sanding roller is arranged at a right angle above and below the material to be sanded, the length of the sanding rollers exceeding the width of the sanded material. The grinding rollers have a so-called CVC contour, so that the surface design of the material to be ground can be influenced by axially displacing the grinding rollers.

Sollen jedoch neben Zunder auch noch Oberflächenfehler ausgeschliffen werden, so muß durch die Schleifvorrichtung in erster Linie ein Materialabtrag erreicht werden, eine Beeinflussungsmöglichkeit der Oberflächengestalt tritt dabei in den Hintergrund. Um den Abtrag zu gewährleisten reicht die Schleifwalze nicht mehr aus. Da die Schleifwalze großflächig auf dem Schleifgut aufliegt wäre diese nur in der Lage unter erheblichen Anstellkräften einen entsprechenden Materialabtrag zu erreichen. Hinzu kommt, daß mit der starren Schleifwalze - eine Walzenbiegung außer acht gelassen - primär nur die am weitesten abstehenden zu schleifenden Materialstücke erreicht werden. Liegen auszuschleifende Fehler in kleinen Vertiefungen, so können diese Fehler mit der starren Walze nicht ausgeschliffen werden.If, however, surface defects are also to be ground in addition to scale, the grinding device must first and foremost remove material, and the possibility of influencing the surface shape takes a back seat. The sanding roller is no longer sufficient to ensure removal. Since the grinding roller lies on the surface of the grinding material over a large area, it would only be able to achieve a corresponding material removal under considerable contact forces. In addition, the rigid grinding roller - disregarding roller bending - primarily only reaches the most distant pieces of material to be ground will. If there are flaws to be ground out in small recesses, these flaws cannot be ground out with the rigid roller.

Um an heißem Schleifgut bspw. im Temperaturbereich von 750°C bis 1200°C größere Materialabnahmen zu erreichen, wurden auch schon Bandschleifemaschinen vorgeschlagen, mit denen zwar auch kleinere und tieferliegende Bereiche des Schleifgutes bearbeitet werden können, mit denen jedoch ebenfalls keine ausreichenden Schleifdrücke auf das Schleifgut aufbringbar sind.In order to achieve larger material decreases on hot material to be grinded, for example in the temperature range from 750 ° C to 1200 ° C, belt grinding machines have also already been proposed, with which smaller and deeper areas of the material to be grinded can also be processed, but with which, likewise, no sufficient grinding pressure is applied to the material Grinding material can be applied.

Der Erfindung liegt daher die Aufgabe zugrunde, eine Schleifvorrichtung der gattungsgemäßen Art so weiterzubilden, daß problemlos alle Bereiche des Schleifgutes bearbeitbar sind und daß ausreichend großer Schleifdruck auf das Schleifgut ausübbar ist.The invention is therefore based on the object of developing a grinding device of the generic type in such a way that all areas of the grinding material can be processed without problems and that a sufficiently high grinding pressure can be exerted on the grinding material.

Diese Aufgabe wird durch die Merkmale des Anspruchs 1 gelöst. Durch die Unterteilung der Schleifwalze in mehrere Schleifrollen wird von der großflächigen, starren Auflage des Schleifkörpers auf dem Schleifgut abgegangen. Die nachgiebigen Lamellen gewährleisten im Zusammenhang mit hohen Drehzahlen der sie tragenden Welle, daß die Außenkontur der Schleifrollen zwar durch Fliegkräfte im wesentlichen üblichen Walzenballigkeiten entspricht, daß sich die einzelnen Lamellen jedoch im Andruckbereich an die Oberflächen des Schleifgutes anzupassen vermögen, so daß nicht wie bei der gattungsgemäßen starren Walze zunächst der am weitesten vorstehende Bereich des Schleifgutes geschliffen wird und erst wenn dieser abgeschliffen ist, die nicht so weit herausragenden Bereiche, sondern daß alle Bereiche des Schleifgutes gleichzeitig geschliffen und entsprechend an allen Stellen gleichzeitig Material abgetragen werden kann.This object is solved by the features of claim 1. The subdivision of the grinding roller into several grinding rollers means that the large, rigid support of the grinding wheel on the material to be ground is avoided. The resilient lamellae, in connection with the high speeds of the shaft carrying them, ensure that the outer contour of the grinding rollers corresponds to the usual roller crowns due to flying forces, but that the individual lamellae are able to adapt to the surfaces of the material to be grinded in the pressure area, so that they do not, as in the case of Generic rigid roller is first sanded the most protruding area of the material to be ground and only when this is ground, the not so protruding areas, but that all areas of the material to be ground can be ground simultaneously and material can be removed accordingly at all points.

Der Antrieb und die Anstellung der Schleifrollen erfolgt über die gemeinsame Welle, so daß mit verhältnismäßig wenig Aufwand ein großflächiges, gleichmäßiges Schleifen des Schleifguts möglich ist.The drive and the adjustment of the grinding rollers take place via the common shaft, so that a large-area, uniform grinding of the grinding material is possible with relatively little effort.

Dabei kann es sich bei den Lamellen nach Anspruch 1 um Bürsten handeln, oder aber, wie in Anspruch 2 beansprucht, um sogenannte Lamellenschleifrollen, bei denen lediglich die freien Endbereiche der Lamellen zum Schleifvorgang beitragen. Sind, wie Anspruch 3 vorschlägt, zwischen benachbarten Lamellen Distanzelemente vorgesehen, so können sich die einzelnen Lamellen besser in der sie umgebenen Luft abkühlen. Es besteht jedoch auch die Möglichkeit, wie es Anspruch 10 ganz allgemein vorschlägt, Kühlmitteldüsen für die Lamellen vorzusehen.The lamellae according to claim 1 can be brushes or, as claimed in claim 2, so-called lamella grinding rollers, in which only the free end areas of the lamellae contribute to the grinding process. If, as claimed in claim 3, spacer elements are provided between adjacent fins, the individual fins can cool better in the air surrounding them. However, there is also the possibility, as generally proposed in claim 10, to provide coolant nozzles for the fins.

Um die Anstellkräfte verringern zu können und die Lamellen weniger biegezubeanspruchen, besteht nach Anspruch 4 die Möglichkeit, Abstände zwischen den Schleifrollen vorzusehen. Damit jedoch die komplette Oberfläche des Schleifgutes bearbeitet werden kann, müssen für diesen Fall die Schleifrollen periodisch axial verschoben werden, wobei darauf zu achten ist, daß die Lamellen der äußeren Schleifrollen nicht vollständig über den Randbereich des Schleifgutes bewegt werden, da ansonsten beim Zurückbewegen der Schleifrollen deren Flanken gegen das Schleifgut bewegt würden, wodurch eine Zerstörung der Lamellen erfolgen könnte. Weiterhin sollte die axiale Verschiebegeschwindigkeit an die Vorschubgeschwindigkeit des Schleifgutes angepaßt werden, damit tatsächlich alle Bereiche des Schleifgutes bearbeitet werden können.In order to be able to reduce the contact forces and to stress the lamellae less, there is the possibility according to claim 4 to provide distances between the grinding rollers. However, so that the entire surface of the grinding material can be processed, the grinding rollers must be periodically shifted axially in this case, taking care that the lamellas of the outer grinding rollers are not moved completely over the edge area of the grinding material, otherwise the grinding rollers will move back the flanks of which would be moved against the material to be ground, which could destroy the lamellae. Furthermore, the axial displacement speed should be adapted to the feed speed of the material to be ground so that all areas of the material to be ground can actually be processed.

Eine weitere Möglichkeit, daß komplette Schleifgut zu bearbeiten, obwohl Abstände zwischen den Schleifrollen vorgesehen sind und keine axiale Verschiebung der Rollen erfolgen muß, zeigt Anspruch 5 auf, nach welchem eine zweite Welle in der Schleifgut-Transportrichtung hinter der ersten Welle angeordnet ist, wobei die Schleifrollen der zweiten Welle jedoch auf die schleifrollenfreien Räume der ersten Welle ausgerichtet sind.A further possibility for processing complete grinding material, although there are gaps between the grinding rollers and no axial displacement of the rollers is required, is shown in claim 5, according to which a second shaft is arranged in the grinding material transport direction behind the first shaft, the However, grinding rollers of the second shaft are aligned with the spaces of the first shaft that are free of grinding rollers.

Die Schleifrollen weisen eine gewisse Standzeit auf, nach der sie ausgewechselt werden müssen. Um einen kontinuierlichen Betrieb der Schleifvorrichtung zu gewährleisten, wird daher nach Anspruch 6 vorgeschlagen, mehrere mit Schleifrollen bestückte Wellen hintereinander vorzusehen, so daß die verbrauchten Schleifrollen mit entsprechenden Wechselvorrichtungen ausgetauscht werden können, während die auf den übrigen Wellen angeordneten Schleifrollen angestellt und zum Schleifen herangezogen werden können.The grinding rollers have a certain service life, after which they have to be replaced. To ensure continuous operation of the To ensure grinding device, it is therefore proposed according to claim 6 to provide several shafts equipped with grinding rollers one after the other, so that the used grinding rollers can be exchanged with corresponding changing devices, while the grinding rollers arranged on the other shafts can be used and used for grinding.

Um die hohen Andruckkräfte besser auf das Schleifgut aufbringen zu können und die Wellen weniger biegezubeanspruchen besteht nach Anspruch 7 die Möglichkeit, die Wellen in den schleifrollenfreien Bereichen zusätzlich abzustützen und anzustellen.In order to be able to apply the high pressure forces better to the material to be sanded and to stress the shafts less, there is the possibility, according to claim 7, of additionally supporting and adjusting the shafts in the areas free of grinding wheels.

Um ein gleichmäßiges Schleifen des Schleifgutes auch bei dicht nebeneinander angeordneten Schleifrollen zu gewährleisten, wird nach Anspruch 8 vorgeschlagen, die Schleifrollen halternden Wellen axial periodisch zu verschieben. Damit werden auch zwischen zwei dicht nebeneinander angeordneten Schleifrollen mögliche Bereiche, in denen kein Schleifvorgang stattfindet bzw. nur unzureichend geschliffen wird, ausgeschlossen.In order to ensure a uniform grinding of the material to be grinded even with grinding rollers arranged close to one another, it is proposed according to claim 8 to axially periodically shift the shafts holding the grinding rollers. This also eliminates possible areas between two grinding rollers arranged closely next to one another, in which no grinding process takes place or only insufficient grinding is carried out.

Um das abgetragene Material von dem Schleifgut zu entfernen, werden zumindest oberhalb des Schleifgutes angeordnete Saugdüsen vorgeschlagen. Das von den unterhalb des Schleifgutes angeordneten Schleifrollen abgetragene Material fällt durch die Schwerkraft herunter und kann mit geeigneten Mitteln aufgefangen werden.In order to remove the removed material from the grinding material, suction nozzles arranged at least above the grinding material are proposed. The material removed from the grinding rollers located below the material to be ground falls down due to gravity and can be collected with suitable means.

Die Wellen sind starker Strahlungswärme ausgesetzt, wobei die oberhalb des Schleifgutes angeordneten Wellen zusätzlich noch starker Konvektionswärme standhalten müssen. Hinzu kommt die Wärme, welche beim Schleifen entsteht und von den Lamellen abzuführen ist, so daß es sinnvoll sein kann, wie es Anspruch 11 vorschlägt, die Welle zu kühlen.The waves are exposed to strong radiant heat, whereby the waves arranged above the material to be ground must also withstand strong convection heat. In addition, there is the heat which arises during grinding and is to be dissipated from the lamellae, so that it can be useful, as proposed in claim 11, to cool the shaft.

Um eine bessere Überlappung der einzelnen Schleifbereiche zu erhalten, kann es angebracht sein, wie Anspruch 12 vorschlägt, daß die Welle einen von 90° abweichenden Winkel zur Bewegung-Längsrichtung des Schleifgutes aufweist.In order to obtain a better overlap of the individual grinding areas, it can be appropriate, as proposed in claim 12, that the shaft has an angle deviating from 90 ° to the longitudinal direction of movement of the grinding material.

Die Erfindung wird anhand einer Zeichnung näher erläutert. Dabei zeigen

Figur 1
in schematischer Darstellung die Draufsicht auf eine erfindungsgemäße Schleifvorrichtung, in der verschiedene Möglichkeiten der Ausgestaltung der Schleifrollen gezeigt werden und
Figur 2
die Seitenansicht einer Schleifrolle.
The invention is explained in more detail with reference to a drawing. Show
Figure 1
in a schematic representation, the top view of a grinding device according to the invention, in which various options for the configuration of the grinding rollers are shown and
Figure 2
the side view of a grinding roller.

Figur 1 zeigt eine aus einer nicht dargestellten Stranggießanlage kommende Dünnbramme als Schleifgut 1, welches sich in einem nicht gezeigten Walzwerk in Richtung des Pfeiles 2 bewegt. Oberhalb und unterhalb des Schleifgutes 1 sind Schleifvorrichtungen 3 bis 3'''' angeordnet. Selbstverständlich können auch an den Kanten des Schleifgutes 1 entsprechende Schleifvorrichtungen vorgesehen werden.FIG. 1 shows a thin slab coming from a continuous caster, not shown, as grinding material 1, which moves in the direction of arrow 2 in a rolling mill, not shown. Above and below the grinding material 1, grinding devices 3 to 3 '' '' are arranged. Corresponding grinding devices can of course also be provided on the edges of the grinding material 1.

Die Schleifvorrichtung 3 bis 3'''' weisen, wie bspw. nur an der Schleifvorrichtung 3 dargestellt, über Lager 4, 4' und Einbaustücke 5, 5' in Ständern 6, 6' gelagerte Wellen 7 auf. Die Wellen 7 sind über Motore 8 drehantreibbar. Mittels Verschiebevorrichtung 9 lassen sich die Wellen 7 in axialer Richtung periodisch verschieben. Selbstverständlich kann die Welle 7 auch in axialer Richtung fest angeordnet werden, wie z. B. bei der Schleifvorrichtung 3' gezeigt.As shown, for example, only on the grinding device 3, the grinding device 3 to 3 '' '' have shafts 7 mounted on stands 4, 4 'and chocks 5, 5' in stands 6, 6 '. The shafts 7 can be driven in rotation by motors 8. The shafts 7 can be shifted periodically in the axial direction by means of a shifting device 9. Of course, the shaft 7 can also be arranged in the axial direction, such as. B. shown in the grinding device 3 '.

Die Schleifvorrichtung 3 weist eine Vielzahl von dicht nebeneinander angeordneten Schleifrollen 10, 10', 10'' ..... auf, welche die gesamte Oberfläche des Schleifgutes 1 abdecken. Damit läßt sich die gesamte Oberfläche des Schleifguts 1 bearbeiten. Die Schleifvorrichtung 3 bedarf somit grundsätzlich keines Verschiebeantriebes 9. Der hier vorgeschlagene Verschiebeantrieb 9 dient lediglich zur besseren Vergleichmäßigung des Schliffes.The grinding device 3 has a multiplicity of grinding rollers 10, 10 ', 10''..... arranged closely next to one another, which cover the entire surface of the grinding material 1. The entire surface of the grinding material 1 can thus be processed. The grinder 3 therefore basically does not require a displacement drive 9. The displacement drive 9 proposed here is only used to improve the uniformity of the grinding.

Für einen kontinuierlichen Betrieb reicht es schon aus, daß lediglich zwei Schleifvorrichtungen 3 in Bewegungs-Längsrichtung des Schleifgutes 1 hintereinander angeordnet sind, so daß stets eine der Schleifvorrichtungen 3 in Wirkstellung stehen kann, während die zweite durch nicht gezeigte Wechselvorrichtungen ausgewechselt und erneuert werden kann.For continuous operation, it is sufficient that only two grinding devices 3 are arranged one behind the other in the longitudinal direction of movement of the material to be grinded, so that one of the grinding devices 3 can always be in the active position, while the second can be replaced and replaced by changing devices (not shown).

Die Schleifvorrichtung 3' weist Schleifrollen 10, 10', 10'' ..... auf, zwischen denen Abstände vorgesehen sind. Im Bereich der Abstände läßt sich Kühlluft für die Schleifrollen einblasen. Dazu dient eine Pumpe 11, die über Leitungen 12 mit den Düsen 13 verbunden ist. Weiterhin ist der Schleifvorrichtung 3' bspw. eine Saugdüse 20 zugeordnet, die an eine Pumpe 21 angeschlossen ist, mittels derer die abgeschliffenen Materialteilchen abgesaugt werden können. Diese Kühl- und/oder Absaugvorrichtungen können selbstverständlich auch den übrigen Schleifvorrichtungen zugeordnet werden.The grinding device 3 'has grinding rollers 10, 10', 10 '' ..... between which distances are provided. Cooling air for the grinding rollers can be blown in in the area of the distances. For this purpose, a pump 11 is used, which is connected to the nozzles 13 via lines 12. Furthermore, the grinding device 3 'is assigned, for example, a suction nozzle 20 which is connected to a pump 21, by means of which the ground material particles can be suctioned off. These cooling and / or suction devices can of course also be assigned to the other grinding devices.

Die Schleifvorrichtung 3'' besitzt ebenfalls Abstände zwischen den einzelnen Schleifrollen 10, 10', 10'' ....., wobei die Schleifrollen 10 der Schleifvorrichtung 3'' auf die Freiräume zwischen den Schleifrollen 10 der Schleivorrichtung 3' ausgerichtet sind. Weiterhin zeigt die Schleifvorrichtung 3'' eine Kühlmittelpumpe 14, von der über entsprechende Leitungen Kühlmittel den entsprechenden Wellen 7 zugeführt werden kann. Auch diese Kühlvorrichtung kann jeder der übrigen Schleifvorrichtungen zugeordnet werden.The grinding device 3 ″ also has distances between the individual grinding rolls 10, 10 ′, 10 ″ ″, the grinding rolls 10 of the grinding device 3 ″ being aligned with the free spaces between the grinding rolls 10 of the grinding device 3 ′. Furthermore, the grinding device 3 ″ shows a coolant pump 14, from which coolant can be supplied to the corresponding shafts 7 via corresponding lines. This cooling device can also be assigned to each of the other grinding devices.

Es besteht die Möglichkeit, die Schleifvorrichtung 3' und schleifvorrichtung 3'' ohne Axialverschiebeantrieb hintereinander anzuordnen. Für einen kontinuierlichen Betrieb wird dann z. B. ein weiteres gleiches Paar der Schleifvorrichtungen notwendig. Es ließe sich selbstverständlich auch eine der anderen Schleifvorrichtungen 3, 3''', 3'''' mit den Schleifvorrichtungen 3', 3'' kombinieren.It is possible to arrange the grinding device 3 'and grinding device 3''one behind the other without an axial displacement drive. For continuous operation, z. B. another same pair of grinders necessary. It could be of course also combine one of the other grinding devices 3, 3 ''',3''''with the grinding devices 3', 3 ''.

Es besteht jedoch auch die Möglichkeit, die Schleifvorrichtung 3'' mit einem Axialverschiebeantrieb 9 zu versehen. Durch das axiale periodische Verschieben ist schon mit mindestens 2 dieser Schleifvorrichtungen 3'' ein kontinuierlicher Betrieb möglich.However, there is also the possibility of providing the grinding device 3 ″ with an axial displacement drive 9. Continuous operation is possible with at least 2 of these grinding devices 3 ″ due to the axial periodic shifting.

Die Schleifvorrichtung 3''' zeigt, daß auch mit wenigen Schleifrollen und einer entsprechenden Axialverschiebung ein ausreichender Abtrag von dem Schleifgut 1 gewährleistet ist. Um bei dieser Schleifvorrichtung eine genügend große Anstellkraft auf das Schleifgut aufbringen zu können, weist die Welle 7 noch weitere, anstellbare Lager 15 auf.The grinding device 3 '' 'shows that even with a few grinding rollers and a corresponding axial displacement, sufficient removal from the grinding material 1 is ensured. In order to be able to exert a sufficiently large contact force on the material to be ground in this grinding device, the shaft 7 has further, adjustable bearings 15.

Es ist sogar denkbar, eine Schleifvorrichtung nur mit einer Schleifrolle auf der Welle 7 vorzusehen. In diesem Falle wäre es jedoch sinnvoll, die Welle in axialer Richtung ortsfest zu montieren und die Schleifrolle auf der Welle drehfest, jedoch axial verschiebbar anzuordnen und einen entsprechenden Axialverschiebeantrieb für die Schleifrolle vorzusehen.It is even conceivable to provide a grinding device with only one grinding roller on the shaft 7. In this case, however, it would make sense to mount the shaft stationary in the axial direction and to arrange the grinding roller in a rotationally fixed but axially displaceable manner on the shaft and to provide a corresponding axial displacement drive for the grinding roller.

Die Schleifvorrichtung 3'''' weist eine gegenüber den übrigen Wellen 7 geneigt angeordnete Welle 7 auf. Auf dieser geneigten Welle 7 können selbstvertständlich Schleifrollenanordnungen vorgesehen sein, wie sie bei den Schleifvorrichtungen 3 bis 3''' gezeigt worden sind. Auch Kühlvorrichtungen 11 bis 15 können dieser Schleifvorrichtung 3'''' zugeordnet werden. Für den kontinuierlichen Betrieb können mehrere der schleifvorrichtungen 3'''' hintereinander angeordnet werden, wobei der Winkel zur Durchlaufrichtung des Schleifgutes 1 von allen Wellen 7 identisch oder aber auch verschieden bzw. entgegengesetzt geneigt sein können.The grinding device 3 '''' has a shaft 7 which is arranged at an angle to the other shafts 7. Grinding roller arrangements can of course be provided on this inclined shaft 7, as shown in the grinding devices 3 to 3 '''. Cooling devices 11 to 15 can also be assigned to this grinding device 3 ''''. For continuous operation, several of the grinding devices 3 '''' can be arranged one behind the other, whereby the angle to the direction of travel of the grinding material 1 can be identical for all shafts 7 or can also be inclined differently or in opposite directions.

Figur 2 zeigt eine Schleifrolle 10, die aus einem Nabenkörper 16 besteht, von dessen Mantel 17 Lamellen 18 ausgehen. Zwischen den Lamellen 18 sind Distanzstücke 19 vorgesehen, die den Abstand der Lamellen 16 zueinander vergrößern, so daß eine bessere Kühlung der einzelnen Lamellen 18 möglich ist.FIG. 2 shows a grinding roller 10, which consists of a hub body 16, from whose jacket 17 lamellae 18 extend. Spacers 19 are provided between the fins 18, which increase the spacing of the fins 16 from one another, so that better cooling of the individual fins 18 is possible.

SchlifvorrichtungGrinding device BezugszeichenübersichtReference symbol overview

11
SchleifgutGrit
22nd
Pfeilarrow
3 - 3''''3 - 3 '' ''
SchleifvorrichtungGrinding device
4, 4'4, 4 '
Lagercamp
5, 5'5, 5 '
EinbaustückeChocks
6, 6'6, 6 '
StänderStand
77
Wellenwaves
88th
Motorengine
99
VerschiebeantriebSliding drive
1010th
SchleifrollenGrinding rollers
1111
Pumpepump
1212th
Leitungmanagement
1313
Düsejet
1414
KühlmittelpumpeCoolant pump
1515
Lagercamp
1616
NabenkörperHub body
1717th
Mantelcoat
1818th
LamelleSlat
1919th
DistanzstückeSpacers
2020th
SaugdüseSuction nozzle
2121
Pumpepump

Claims (13)

Vorrichtung zum Schleifen der Oberflächen von stranggegossenen Brammen, auch Dünnbrammen und/oder warmgewalzten bzw. warmzuwalzenden Bändern, während ihres Vorschubes im Walzwerk zum Entfernen von zu beanstandenden Oberflächenabschnitten wie Zunderschichten und/oder Texturfehlern oder dergleichen mittels Brammenoberflächen übergreifenden Walzen,
dadurch gekennzeichnet,
daß anstelle von Walzen je eine durchgehend angeordnete Welle (7) vorgesehen ist, auf der axial hintereinander eine Anzahl von mit der Welle (7) drehfest verbundene Schleifrollen (10) vorgesehen ist, und daß die Schleifrollen (10) je einen zentralen Nabenkörper (16) aufweisen, von dessen Mantel (17) mit einem Schleifmittel versehene bzw. versehbare nachgiebige Lamellen (18) ausgehen.Device for grinding the surfaces of continuously cast slabs, also thin slabs and / or hot-rolled or hot-rolled strips, during their feed in the rolling mill to remove objectionable surface sections such as layers of scale and / or texture defects or the like by means of rollers spanning slab surfaces,
characterized,
that instead of rollers, a continuously arranged shaft (7) is provided, on which axially one after the other a number of rotationally fixedly connected to the shaft (7) grinding rollers (10) is provided, and that the grinding rollers (10) each have a central hub body (16 ), from whose jacket (17) provided with an abrasive or provided flexible slats (18). Vorrichtung nach Anspruch 1,
dadurch gekennzeichnet,
daß sich die Lamellen (18) über die Breite des Nabenkörpers (16) erstrecken.Device according to claim 1,
characterized,
that the lamellae (18) extend over the width of the hub body (16). Vorrichtung nach Anspruch 2,
dadurch gekennzeichnet,
daß zwischen benachbarten Lamellen (18) Distanzelemente (19) vorgesehen sind.Device according to claim 2,
characterized,
that spacer elements (19) are provided between adjacent slats (18). Vorrichtung nach einem der Ansprüche 1 bis 3,
dadurch gekennzeichnet,
daß die auf einer gemeinsamen Welle (7) vorgesehenen Schleifrollen (10) Abstände zwischeneinander aufweisen und daß die die Schleifrollen (10) aufweisende Welle (7) periodisch axial verschiebbar ist.Device according to one of claims 1 to 3,
characterized,
that the grinding rollers (10) provided on a common shaft (7) are spaced apart and that the shaft (7) having the grinding rollers (10) is periodically axially displaceable. Vorrichtung nach einem der Ansprüche 1 bis 3,
dadurch gekennzeichnet,
daß die auf einer gemeinsamen Welle (7) vorgesehenen Schleifrollen (10) Abstände zwischeneinander aufweisen, und daß in Walzrichtung hintereinander mindestens zwei Wellen (7) vorgesehen sind, deren Schleifrollen (10) zu den Schleifrollen (10) der ersten Welle (7) gestaffelt angeordnet sind.Device according to one of claims 1 to 3,
characterized,
that the grinding rollers (10) provided on a common shaft (7) are spaced apart, and that at least two shafts (7) are provided in the rolling direction one behind the other, the grinding rollers (10) of which are staggered to the grinding rollers (10) of the first shaft (7) are arranged. Vorrichtung nach einem der Ansprüche 1 bis 5,
dadurch gekennzeichnet,
daß zur Gewährleistung eines kontinuierlichen Betriebes zusätzliche mit Schleifrollen (10) ausgestattete Wellen (7) vorgesehen sind.Device according to one of claims 1 to 5,
characterized,
that additional shafts (7) equipped with grinding rollers (10) are provided to ensure continuous operation. Vorrichtung nach einem der Ansprüche 4 bis 6,
dadurch gekennzeichnet,
daß Wellenbereiche zwischen den Schleifrollen (10) durch zusätzliche Lager (15) abgestützt sind.Device according to one of claims 4 to 6,
characterized,
that shaft areas between the grinding rollers (10) are supported by additional bearings (15). Vorrichtung nach einem der Ansprüche 1 bis 7,
dadurch gekennzeichnet,
daß Wellen (7) axial periodisch verschiebbar sind.Device according to one of claims 1 to 7,
characterized,
that shafts (7) are axially displaceable periodically. Vorrichtung nach einem der Ansprüche 1 bis 8,
dadurch gekennzeichnet,
daß den Arbeitsbereichen der Schleifrollen (10) Saugdüsen (20) zugeordnet sind.Device according to one of claims 1 to 8,
characterized,
that the working areas of the grinding rollers (10) are assigned suction nozzles (20). Vorrichtung nach einem der Ansprüche 1 bis 9,
dadurch gekennzeichnet,
daß den Lamellen (18) der Schleifrollen (10) Kühlmitteldüsen (13) zugeordnet sind.Device according to one of claims 1 to 9,
characterized,
that the lamellae (18) of the grinding rollers (10) are assigned coolant nozzles (13). Vorrichtung nach einem der Ansprüche 1 bis 10,
dadurch gekennzeichnet,
daß die Wellen (7) kühlmittelbeaufschlagt bzw. -durchsetzt (Kühlmittelpumpe 14) sind.Device according to one of claims 1 to 10,
characterized,
that the shafts (7) are acted upon or penetrated by coolant (coolant pump 14). Vorrichtung nach einem der Ansprüche 1 bis 11,
dadurch gekennzeichnet,
daß die Wellen (7) einen von 90° abweichenden Winkel zur Längsachse des Schleifgutes (1) aufweisen.Device according to one of claims 1 to 11,
characterized,
that the shafts (7) have an angle deviating from 90 ° to the longitudinal axis of the grinding material (1). Vorrichtung nach einem der Ansprüche 1 bis 12,
dadurch gekennzeichnet,
daß die Vorrichtung in einem Temperaturbereich von 750°C bis 1200°C unmittelbar hinter der Stranggießmaschine eingesetzt wird.Device according to one of claims 1 to 12,
characterized by
that the device is used in a temperature range of 750 ° C to 1200 ° C immediately behind the continuous casting machine.
EP96110712A 1995-07-19 1996-07-03 Abrading device Withdrawn EP0754504A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19526280 1995-07-19
DE19526280A DE19526280A1 (en) 1995-07-19 1995-07-19 Grinding device

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JP (1) JPH09103942A (en)
KR (1) KR970005528A (en)
CN (1) CN1145829A (en)
CA (1) CA2178178A1 (en)
DE (1) DE19526280A1 (en)
TW (1) TW340810B (en)

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EP1916061A1 (en) * 2006-10-24 2008-04-30 Welser Profile GmbH Device and method for removing a metal coating
EP2719800A1 (en) * 2011-06-09 2014-04-16 Tokyo Stainless Grinding Co., Ltd. Method for producing steel
CN109048542A (en) * 2018-08-23 2018-12-21 江苏森蓝智能系统有限公司 A kind of copper bar deburring clamping turnover device
CN112091791A (en) * 2020-09-21 2020-12-18 张慧 Rust removal device for machining of constructional engineering steel plates

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EP1916061A1 (en) * 2006-10-24 2008-04-30 Welser Profile GmbH Device and method for removing a metal coating
EP2719800A1 (en) * 2011-06-09 2014-04-16 Tokyo Stainless Grinding Co., Ltd. Method for producing steel
EP2719800A4 (en) * 2011-06-09 2015-04-01 Tokyo Stainless Grinding Co Ltd Method for producing steel
CN109048542A (en) * 2018-08-23 2018-12-21 江苏森蓝智能系统有限公司 A kind of copper bar deburring clamping turnover device
CN112091791A (en) * 2020-09-21 2020-12-18 张慧 Rust removal device for machining of constructional engineering steel plates

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DE19526280A1 (en) 1997-01-23
JPH09103942A (en) 1997-04-22
CA2178178A1 (en) 1997-01-20
KR970005528A (en) 1997-02-19
TW340810B (en) 1998-09-21
CN1145829A (en) 1997-03-26

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