EP0470436B1 - Pressure roll for holding slabs down in an upsetting press - Google Patents
Pressure roll for holding slabs down in an upsetting press Download PDFInfo
- Publication number
- EP0470436B1 EP0470436B1 EP91112376A EP91112376A EP0470436B1 EP 0470436 B1 EP0470436 B1 EP 0470436B1 EP 91112376 A EP91112376 A EP 91112376A EP 91112376 A EP91112376 A EP 91112376A EP 0470436 B1 EP0470436 B1 EP 0470436B1
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- EP
- European Patent Office
- Prior art keywords
- slab
- channels
- holding roll
- holding
- press
- 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 - Lifetime
Links
- 238000001816 cooling Methods 0.000 claims abstract description 32
- 238000005096 rolling process Methods 0.000 claims abstract description 7
- 239000000969 carrier Substances 0.000 claims abstract description 3
- 239000002826 coolant Substances 0.000 claims description 17
- 238000003825 pressing Methods 0.000 abstract description 20
- 230000001603 reducing effect Effects 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 4
- 230000008719 thickening Effects 0.000 description 5
- 238000007906 compression Methods 0.000 description 4
- 230000002093 peripheral effect Effects 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000000498 cooling water Substances 0.000 description 2
- 238000003079 width control Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- IHQKEDIOMGYHEB-UHFFFAOYSA-M sodium dimethylarsinate Chemical class [Na+].C[As](C)([O-])=O IHQKEDIOMGYHEB-UHFFFAOYSA-M 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F5/00—Elements specially adapted for movement
- F28F5/02—Rotary drums or rollers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B15/0035—Forging or pressing devices as units
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
- B21B27/06—Lubricating, cooling or heating rolls
- B21B27/08—Lubricating, cooling or heating rolls internally
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B39/00—Arrangements for moving, supporting, or positioning work, or controlling its movement, combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B39/006—Pinch roll sets
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J1/00—Preparing metal stock or similar ancillary operations prior, during or post forging, e.g. heating or cooling
- B21J1/04—Shaping in the rough solely by forging or pressing
Definitions
- a compression press for reducing the slab width is known, for example, from European Patent 0 112 516 and comprises a pair of pressing tools which are arranged on both broad sides of a slab feed line in such a way that their pressing surfaces point towards one another for pressing a slab.
- a vibration unit vibrates the pressing tools.
- This known upsetting press further comprises a width control unit for controlling the position of the pressing tool in the slab width direction and a control which detects that the front end of the slab is arranged between the parallel surfaces of the pressing tools and which then actuates the width control device and, after carrying out a predetermined pressing, the vibration unit .
- This press is intended to improve the compression effect with regard to the shape and surface of the slab.
- a device for substantially reducing the width of metallic slabs consisting of a pair of processing tools that work in the plane of the slab and detect the slab on opposite edges.
- a strong pressing force is generated by a hydraulic drive, which is connected to each of the processing tools, by means of which the width of the slab is reduced.
- An actuator which is connected to each processing tool, controls their relative distance from one another so that a slab of the desired thickness can be produced.
- the slab is gripped in a plane perpendicular to the plane of the pressing tools by a punch arranged above and below the slab in order to retain local thickenings of the workpiece, while the width of the slab is reduced by upsetting.
- the relative distance of the punches from one another and from the slab surface can be changed.
- the slabs still have temperatures of around 800 ° C and above on their metallic surface in the upsetting press.
- hold-down devices which are intended to retain local thickening of the slab during the upsetting process, are used continuously working compression press must be permanently on the surface of the slab and exposed to high temperatures there, which is why they must be cooled.
- Untargeted water cooling of the hold-down devices cannot be used because the thickening of the slab at the side means that the cooling water cannot run off when it is compressed at the side; an evaporating water surface forms on the slab surface, which leads to strong uncontrolled local cooling.
- Different local cooling of the slab not only has a negative impact on the slab compression process in the upsetting press, but also has an increasingly negative effect in the subsequent horizontal stands for reducing the thickness of the rolling stock.
- the object of the invention is to protect the conveying devices or hold-down devices for the red-hot slab, which come into permanent contact with the hot slab surface, in particular in the case of a continuously operating upsetting press, against the effects of the high temperatures as a result of direct heat transfer or heat radiation, and to locally cool the slab during to avoid the upsetting process.
- the invention is characterized in that coolant channels are arranged in a known manner in each holder roll, with axially extending inlet and outlet channels and with a plurality of peripheral peripheral channels in the peripheral region of the holding roller, essentially parallel to the rolling surfaces of the holding roller as well as with connecting channels between inlet and outlet channels and horizontal channels and that at least the retaining roller can be connected from an inner hub part provided with bearing pins and an outer one to the hub part there is hollow cylindrical roller, and that the hub part on the outside or the roller inside has circumferential annular grooves, from which the connecting channels to the horizontal channels or to the inlet channels or outlet channels.
- the heat is preferably carried away from the roll surface by the coolant flow and the selected arrangement of all the cooling channels requires a uniform flow of coolant through all the inner parts of the roll, so that these are also cooled uniformly. If, due to the choice of material, for design reasons or for reasons of strength, the holding roller should be made in several parts, the solution proposed here nevertheless ensures the internal cooling of the rollers.
- the bearing housing of the holding roller in particular its bearing cover facing the slab surface, is additionally provided with internal cooling in the form of a cooling pocket. It is also useful if the coolant supply of the holding roller is connected to the coolant supply for its bearing housing and bearing cover with cool bags.
- the upset press is a flying upset press for reducing the width of slabs in a hot wide strip roughing mill, the slabs being almost continuously produced by a slab casting system upstream of the upset press be fed.
- the upsetting press has horizontal scaffolding stands; is a crankcase that starts cranking adjustable in the scaffold stand. The crankcase is adjusted using a mechanical adjustment. Pressing tools are arranged on both sides of the slab; the pressing tool has a crank drive which acts perpendicular to the slab and a feed drive which acts in the tangential direction, that is to say parallel to the slab. The movement sequences of the crank drive and feed drive are synchronized in accordance with the feed movement of the slab.
- the pressing tool is adjusted in rapid succession to the speed of the slab, touches (without relative movement to the slab) perpendicular to the slab edge, compresses the slab sideways and is then moved back laterally at a distance from the slab.
- Figure 1 shows that the upsetting press in the area between the pressing tools above and below the slab 1 has height-adjustable holding rollers 2, that in the inlet area 3 and in the outlet area 4 of the upsetting press driving rollers 5 are arranged above and below the slab, and that holding rollers 2 and driving rollers 5 are provided with internal cooling, which is shown in more detail in FIGS. 2 and 3.
- the two holding rollers 2 are arranged approximately in the middle of the slab width and viewed in the slab feed direction 6 one behind the other and are held in a holding frame 7 and vertical guides 8 so as to be vertically displaceable.
- the holding frame 7 and the adjusting device 9 for the height shifting of the holding rollers are connected to a crossbar 10, which in each case rests firmly on the upper or lower spars 11, 11 'of the horizontal stand of the upsetting press.
- the driver rollers 5 are held in a swivel arm 12, the pivot pins of which are arranged on a vertical crossbar 13.
- the vertical crossbeam is on the Upper spars 11 and on the lower spars 11 'of the scaffold stand and screwed laterally outside the infeed roller table 14 and the outfeed roller table 15 for the slab 1.
- the lower driving roller 5 can be driven and in the outfeed area of the upsetting press both are upper and lower driver roller can be driven.
- FIG. 2 shows a holding roller 2, which consists of an inner hub part 17 provided with a bearing pin 16 and an outer hollow cylindrical roller 18 which can be connected to the hub part, the hub part on the outside or the roller on the inside having circumferential annular grooves 19, of which connecting channels 20 the horizontal channels 21 or to the inlet channels 22 or outlet channels 23.
- the inlet and outlet channels run axially.
- a plurality of the horizontal channels 21 are arranged peripherally evenly distributed in the circumferential area of the rollers and essentially parallel to their running surfaces 24.
- the bearing housing of the holding roller in particular its bearing cover 25 pointing to the slab surface, is additionally provided with internal cooling, which in the present case is shaped into an elongated cooling pocket 26. The connections for the coolant are not shown in detail.
- the coolant flows through the cooling channels in the direction of the arrows shown.
- the cooling device for the holding roller and the cooling device for its bearing housing or bearing cover are connected to one another by pipes, which are not shown in detail, but can correspond to conventional pipeline construction. It can be seen that the arrangement of the coolant channels in this way ensures optimal internal cooling of the holding rollers, in particular the rolling surfaces of the holding rollers in contact with the high-temperature slab surface.
- FIG. 3 shows the formation of the coolant channels in the driven driver roller 5, the inlet and outlet channels 22, 23 being designed as a spaced double tube 27 opposite the drive side and running in the middle of the axis, the inner tube 28 being the inlet channel and the outer tube 29 is the outlet channel, which is connected to the horizontal channels 21 via the connecting channels 20.
- the bearing caps 25 are provided with internal cooling, which is shaped as a cooling pocket 26.
- the coolant is supplied with the coolant via the Coolant connection 30, from which a pipe connection to the bearing cap 25 goes off.
- the object on which the invention is based is achieved in full by avoiding the slab from deflecting or bulging during a continuous width reduction and preventing uncontrolled local cooling of the slab, which would always occur if instead of that According to the invention provided internal cooling of the holding rollers and the driver rollers, an open water cooling would be carried out
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Forging (AREA)
- Metal Rolling (AREA)
- Press Drives And Press Lines (AREA)
- Treatment Of Fiber Materials (AREA)
Abstract
Description
Die Erfindung betrifft eine Halterolle zur Abstützung von Brammen in einer Stauchpresse, wie sie z.B. aus dem Dokument DE-A-3 837 643 bekannt ist, zur Reduktion der Brammenbreite in Warmbreitband-Vorstraßen mit beidseitig zur Brammenkante angeordneten, Preßwerkzeuge aufnehmenden Werkzeugträgern, wobei die Halterolle der Stauchpresse im Bereich zwischen den Preßwerkzeugen oberhalb und unterhalb der Bramme höhenverstellbar angeordnet ist und im Ein- und Auslaufbereich der Stauchpresse oberhalb und unterhalb der Bramme Treiberrollen angeordnet sind.The invention relates to a holding roller for supporting slabs in an upsetting press, as e.g. is known from document DE-A-3 837 643, for reducing the slab width in hot wide strip roughing mills with tool carriers arranged on both sides of the slab edge and receiving tooling, the holding roller of the upsetting press being arranged in a height-adjustable manner in the area between the pressing tools above and below the slab and Driver rollers are arranged above and below the slab in the inlet and outlet area of the upsetting press.
Eine Stauchpresse zur Reduktion der Brammenbreite ist bspw. aus der europäischen Patentschrift 0 112 516 bekannt und umfaßt ein Paar Preßwerkzeuge, die auf beiden Breitseiten einer Brammenvorschubstraße so angeordnet sind, daß ihre Preßflächen zum Pressen einer Bramme zueinander weisen. Eine Vibrationseinheit versetzt die Preßwerkzeuge in Schwingungen. Diese bekannte Stauchpresse umfaßt ferner eine Breitenregeleinheit zur Regelung der Lage des Preßwerkzeugs in der Brammenbreitenrichtung und eine Steuerung, die erfaßt, daß das Vorderende der Bramme zwischen den parallelen Flächen der Preßwerkzeuge angeordnet ist und welche dann die Breitenregeleinrichtung sowie nach Durchführung einer vorbestimmten Pressung die Vibrationseinheit betätigt. Mit dieser Presse soll der Staucheffekt bezüglich der Brammenform und der Brammenoberfläche verbessert werden.A compression press for reducing the slab width is known, for example, from European Patent 0 112 516 and comprises a pair of pressing tools which are arranged on both broad sides of a slab feed line in such a way that their pressing surfaces point towards one another for pressing a slab. A vibration unit vibrates the pressing tools. This known upsetting press further comprises a width control unit for controlling the position of the pressing tool in the slab width direction and a control which detects that the front end of the slab is arranged between the parallel surfaces of the pressing tools and which then actuates the width control device and, after carrying out a predetermined pressing, the vibration unit . This press is intended to improve the compression effect with regard to the shape and surface of the slab.
Ob die Bramme in der Stauchpresse während des horizontalen Stauchens von vertikal wirkenden Vorrichtungen in ihrer Position gehalten wird, ist dieser Patentschrift nicht zu entnehmen.It is not clear from this patent whether the slab is held in position in the upsetting press during vertical upsetting by vertically acting devices.
Aus der DE-OS 2 017 306 ist eine Vorrichtung zur wesentlichen Reduzierung der Breite von metallischen Brammen bekannt, bestehend aus einem Paar von Bearbeitungswerkzeugen, die in der Ebene der Bramme arbeiten und die Bramme an entgegengesetzten Kanten erfassen. Von einem hydraulischen Antrieb, der mit jeder der Bearbeitungswerkzeuge verbunden ist, wird eine starke Preßkraft erzeugt, durch die die Breite der Bramme reduziert wird. Von einer Stelleinrichtung, die mit jedem Bearbeitungswerkzeug verbunden ist, wird deren relativer Abstand zueinander gesteuert, damit eine Bramme mit gewünschter Dicke produziert werden kann. Von einem oberhalb und unterhalb der Bramme angeordneten Stempel wird die Bramme in einer Ebene senkrecht zur Ebene der Preßwerkzeuge erfaßt, um örtliche Verdickungen des Werkstücks zurückzuhalten, während die Breite der Bramme durch Stauchen verringert wird. Der relative Abstand der Stempel zueinander und gegenüber der Brammenoberfläche ist veränderlich. Diese vorbekannte Brammenpresse arbeitet diskontinuierlich, indem die Bramme zunächst zwischen den Stempeln eingespannt wird und anschließend die horizontal wirkenden Preßwerkzeuge auf die Brammenkante reduzierend einwirken.From DE-OS 2 017 306 a device for substantially reducing the width of metallic slabs is known, consisting of a pair of processing tools that work in the plane of the slab and detect the slab on opposite edges. A strong pressing force is generated by a hydraulic drive, which is connected to each of the processing tools, by means of which the width of the slab is reduced. An actuator, which is connected to each processing tool, controls their relative distance from one another so that a slab of the desired thickness can be produced. The slab is gripped in a plane perpendicular to the plane of the pressing tools by a punch arranged above and below the slab in order to retain local thickenings of the workpiece, while the width of the slab is reduced by upsetting. The relative distance of the punches from one another and from the slab surface can be changed. This previously known slab press works discontinuously, in that the slab is first clamped between the punches and then the horizontally acting pressing tools have a reducing effect on the slab edge.
Die Brammen haben an ihrer metallischen Oberfläche in der Stauchpresse noch Temperaturen von etwa 800°C und darüberliegend. Dies bedeutet, daß Niederhaltevorrichtungen, die örtliche Verdickungen der Bramme während des Stauchvorganges zurückhalten sollen, bei einer kontinuierlich arbeitenden Stauchpresse auf der Oberfläche der Bramme permanent aufliegen müssen und dort hohen Temperaturen ausgesetzt sind, weshalb sie gekühlt werden müssen. Eine ungezielte Wasserkühlung der Niederhaltevorrichtungen kann deshalb nicht angewandt werden, weil durch die seitliche Verdickung der Bramme beim seitlichen Stauchen das Kühlwasser nicht ablaufen kann; es bildet sich auf der Brammenoberfläche eine verdampfende Wasserfläche, was zu starken unkontrollierten örtlichen Abkühlungen führt. Unterschiedliche örtliche Abkühlungen der Bramme haben nicht nur einen negativen Einfluß auf den Stauchvorgang der Bramme in der Stauchpresse, sondern wirken sich zunehmend negativ aus in den nachfolgenden Horizontalgerüsten zur Dickenreduzierung des Walzguts.The slabs still have temperatures of around 800 ° C and above on their metallic surface in the upsetting press. This means that hold-down devices, which are intended to retain local thickening of the slab during the upsetting process, are used continuously working compression press must be permanently on the surface of the slab and exposed to high temperatures there, which is why they must be cooled. Untargeted water cooling of the hold-down devices cannot be used because the thickening of the slab at the side means that the cooling water cannot run off when it is compressed at the side; an evaporating water surface forms on the slab surface, which leads to strong uncontrolled local cooling. Different local cooling of the slab not only has a negative impact on the slab compression process in the upsetting press, but also has an increasingly negative effect in the subsequent horizontal stands for reducing the thickness of the rolling stock.
Aufgabe der Erfindung ist es, die insbesondere bei einer kontinuierlich arbeitenden Stauchpresse permanent mit der heißen Brammenoberfläche in Kontakt kommenden Fördereinrichtungen bzw. Niederhaltevorrichtungen für die glühendheiße Bramme vor den Einflüssen der hohen Temperaturen infolge direkten Wärmeübergangs bzw. Wärmestrahlung zu schützen und ein örtliches Abkühlen der Bramme während des Stauchvorganges zu vermeiden.The object of the invention is to protect the conveying devices or hold-down devices for the red-hot slab, which come into permanent contact with the hot slab surface, in particular in the case of a continuously operating upsetting press, against the effects of the high temperatures as a result of direct heat transfer or heat radiation, and to locally cool the slab during to avoid the upsetting process.
Diese Aufgabe wird mit den Merkmalen des Anspruchs 1 der Patentanmeldung gelöst; die Patentansprüche 2 und 3 haben weitere Ausgestaltungen der Erfindung zum Inhalt.This object is achieved with the features of claim 1 of the patent application; the
Gemäß Anspruch 1 zeichnet sich die Erfindung dadurch aus, daß in jeder Halterrolle in an sich bekannter Weise Kühlmittelkanäle angeordnet sind, mit achsmittig verlaufenden Eintritts- bzw. Austrittskanälen und mit einer Mehrzahl peripher im Umfangsbereich der Halterolle im wesentlichen parallel zu den Abrollflächen der Halterolle verlaufenden Horizontalkanälen sowie mit Verbindungskanälen zwischen Eintritts- und Austrittskanälen und Horizontalkanälen und daß zumindest die Halterolle aus einem inneren mit Lagerzapfen versehenen Nabenteil und einer äußeren mit dem Nabenteil verbindbaren hohlzylindrischen Laufrolle besteht, und daß der Nabenteil außen bzw. die Laufrolle innen umlaufende Ringnuten aufweist, von denen die Verbindungskanäle zu den Horizontalkanälen bzw. zu den Eintrittskanälen bzw. Austrittskanälen abgehen.According to claim 1, the invention is characterized in that coolant channels are arranged in a known manner in each holder roll, with axially extending inlet and outlet channels and with a plurality of peripheral peripheral channels in the peripheral region of the holding roller, essentially parallel to the rolling surfaces of the holding roller as well as with connecting channels between inlet and outlet channels and horizontal channels and that at least the retaining roller can be connected from an inner hub part provided with bearing pins and an outer one to the hub part there is hollow cylindrical roller, and that the hub part on the outside or the roller inside has circumferential annular grooves, from which the connecting channels to the horizontal channels or to the inlet channels or outlet channels.
Durch diese Maßnahmen werden während des Stauchens örtliche, insbesondere in der Brammenmitte entstehende Materialverdickungen vermieden. Infolge der Innenkühlung für die Halterollen gelangt während des Stauchens kein Kühlwasser auf die Bramme. Gleichwohl kann die Temperatur an der Oberfläche der Halterollen auf ca. 550°C bis 650°C gehalten werden, also unterhalb einer maximal zulässigen Temperatur, bei der eine Gefährdung von Rollenmaterial und Rollenlagerung ausgeschlossen werden kann. Mit Hilfe der Innenkühlung der Halterollen wird außerdem vermieden, daß die Bramme örtlich zu stark abgekühlt wird, was bei einer direkten Wasserkühlung der Fall sein würde. Die Wärme wird bevorzugt von der Rollenoberfläche vom Kühlmittelstrom abtransportiert und die gewählte Anordnung aller Kühlkanäle bedingt eine gleichmäßige Durchströmung des Kühlmittels durch alle Rolleninnenteile, so daß auch diese gleichförmig gekühlt werden. Sollte wegen der Werkstoffauswahl, aus konstruktiven Gründen oder aus Festigkeitsbetrachtungen die Halterolle mehrteilig auszubilden sein, so wird mit der hier vorgeschlagenen Lösung die Innenkühlung der Rollen gleichwohl sichergestellt.These measures prevent local thickening of the material, particularly in the middle of the slab, during upsetting. As a result of the internal cooling for the holding rollers, no cooling water gets onto the slab during the upsetting. Nevertheless, the temperature on the surface of the holding rollers can be kept at approximately 550 ° C. to 650 ° C., that is to say below a maximum permissible temperature at which a hazard to roller material and roller storage can be excluded. With the help of the internal cooling of the holding rollers it is also avoided that the slab is locally cooled too much, which would be the case with direct water cooling. The heat is preferably carried away from the roll surface by the coolant flow and the selected arrangement of all the cooling channels requires a uniform flow of coolant through all the inner parts of the roll, so that these are also cooled uniformly. If, due to the choice of material, for design reasons or for reasons of strength, the holding roller should be made in several parts, the solution proposed here nevertheless ensures the internal cooling of the rollers.
Das Ergebnis der genannten Maßnahmen führt also zu einer höheren Betriebssicherheit der die Bramme führenden Maschinenelemente in der Stauchpresse und zu einem gleichmäßigeren und stoßgeminderten Stauchvorgang zwischen den Preßwerkzeugen sowie zwischen den Walzen der nachgeordneten Horizontal-Walzgerüste.The result of the measures mentioned thus leads to greater operational reliability of the machine elements guiding the slab in the upsetting press and to a more uniform and shock-reduced upsetting process between the pressing tools and between the rollers of the downstream horizontal roll stands.
In Ausgestaltung der Erfindung ist es zweckmäßig, wenn die Lagergehäuse der Halterolle, insbesondere deren auf die Brammenoberfläche weisenden Lagerdeckel zusätzlich mit einer Innenkühlung in Form einer Kühltasche versehen sind. Ferner ist es zweckmäßig, wenn die Kühlmittelversorgung der Halterolle mit der Kühlmittelversorgung für deren Lagergehäuse und Lagerdeckel mit Kühltaschen in Verbindung steht.In an embodiment of the invention, it is expedient if the bearing housing of the holding roller, in particular its bearing cover facing the slab surface, is additionally provided with internal cooling in the form of a cooling pocket. It is also useful if the coolant supply of the holding roller is connected to the coolant supply for its bearing housing and bearing cover with cool bags.
Die Erfindung wird nachfolgend anhand von Ausführungsbeispielen näher beschrieben. Es zeigen:
- Figur 1
- einen Teilausschnitt der Stauchpresse mit oberhalb und unterhalb der Bramme angeordneten Halterollen bzw. Treiberrollen,
Figur 2- die Innenkühlung für eine Halterolle einschließlich der Innenkühlung des Lagerdeckels,
Figur 3- die Innenkühlung einer Treiberrolle mit Doppelrohrzuführung bzw. -abführung für das Kühlmittel.
- Figure 1
- a partial section of the upsetting press with holding rollers or driver rollers arranged above and below the slab,
- Figure 2
- the internal cooling for a holding roller including the internal cooling of the bearing cover,
- Figure 3
- the internal cooling of a driver roller with double pipe feed or discharge for the coolant.
Die nicht näher dargestellte Stauchpresse, zu der die mit einer Innenkühlung versehenen oberen und unteren Halterollen sowie die Treiberrollen gehören, ist eine fliegend arbeitende Stauchpresse zur Reduktion der Breite von Brammen in einer Warmbreitband-Vorstraße, wobei die Brammen nahezu kontinuierlich von einer der Stauchpresse vorgeschalteten Brammengießanlage zugeführt werden. Die Stauchpresse hat liegende Gerüstständer; ein Kurbelgehäuse, welches den Kurbelbetrieb aufnimmt, ist anstellbar in dem Gerüstständer geführt. Die Anstellung des Kurbelgehäuses erfolgt mit Hilfe einer mechanischen Anstellung. Zu beiden Seiten der Bramme sind Preßwerkzeuge angeordnet; das Preßwerkzeug hat einen - wie gesagt - senkrecht zu Bramme wirkenden Kurbeltrieb und einen in Tangentialrichtung, also parallel zur Bramme wirkenden Vorschubantrieb. Die Synchronisierung der Bewegungsabläufe von Kurbelantrieb und Vorschubantrieb erfolgt nach Maßgabe der Vorschubbewegung der Bramme. Das Preßwerkzeug wird in schneller Folge der Vorschubgeschwindigkeit der Bramme angepaßt, setzt (ohne Relativbewegung zur Bramme) senkrecht zur Brammenkante auf, staucht die Bramme seitlich und wird dann mit Abstand zur Bramme seitlich zurückgefahren.The upset press, not shown, to which the upper and lower holding rollers, which are provided with internal cooling, and the driver rollers belong, is a flying upset press for reducing the width of slabs in a hot wide strip roughing mill, the slabs being almost continuously produced by a slab casting system upstream of the upset press be fed. The upsetting press has horizontal scaffolding stands; is a crankcase that starts cranking adjustable in the scaffold stand. The crankcase is adjusted using a mechanical adjustment. Pressing tools are arranged on both sides of the slab; the pressing tool has a crank drive which acts perpendicular to the slab and a feed drive which acts in the tangential direction, that is to say parallel to the slab. The movement sequences of the crank drive and feed drive are synchronized in accordance with the feed movement of the slab. The pressing tool is adjusted in rapid succession to the speed of the slab, touches (without relative movement to the slab) perpendicular to the slab edge, compresses the slab sideways and is then moved back laterally at a distance from the slab.
Figur 1 zeigt, daß die Stauchpresse im Bereich zwischen den Preßwerkzeugen oberhalb und unterhalb der Bramme 1 angeordnete, höhenverstellbare Halterollen 2 aufweist, daß im Einlaufbereich 3 und im Auslaufbereich 4 der Stauchpresse oberhalb und unterhalb der Bramme Treiberrollen 5 angeordnet sind und daß Halterollen 2 und Treiberrollen 5 mit einer Innenkühlung versehen sind, die in den Fig. 2 und Fig. 3 näher dargestellt ist. Die beiden Halterollen 2 sind etwa mittig zur Brammenbreite und in Brammenvorschubrichtung 6 gesehen hintereinander angeordnet und sind in einem Halterahmen 7 und Vertikalführungen 8 höhenverschieblich gehalten. Der Halterahmen 7 und die Verstelleinrichtung 9 für die Höhenverlagerung der Halterollen sind mit einer Quertraverse 10 verbunden, die jeweils auf den oberen bzw. unteren Holmen 11, 11' des liegenden Gerüstständers der Stauchpresse fest aufliegt. Die Treiberrollen 5 sind in einem Schwenkarm 12 gehalten, dessen Drehbolzen an einer Vertikaltraverse 13 angeordnet sind. Die Vertikaltraverse ist an den oberen Holmen 11 und an den unteren Holmen 11' des Gerüstständers fest angeschraubt und liegt jeweils seitlich außerhalb des Einlaufrollgangs 14 bzw. des Auslaufrollgangs 15 für die Bramme 1. Im Einlaufbereich der Stauchpresse ist die untere Treiberrolle 5 antreibbar und im Auslaufbereich der Stauchpresse sind sowohl die obere als auch die untere Treiberrolle antreibbar. Deren Antriebsvorrichtungen wie Gelenkwellen, Getriebe und elektrische Motoren sind nicht näher dargestellt. Mit Hilfe der Treiberrollen 5 im Ein- bzw. Auslaufbereich der Stauchpresse wird die Bramme 1 kontinuierlich und in der Geschwindigkeit steuerbar durch die Presse und damit durch den Einwirkungsbereich der Preßwerkzeuge hindurchgeführt. Mit Hilfe der auf der Oberfläche der Bramme oben und unten aufliegenden Halterollen 2 wird ein Verdicken oder Ausweichen der Bramme nach oben oder unten vermieden. Dies bedingt aber, daß sowohl die Halterollen als auch die Treiberrollen permanent und teilweise mit erheblichem Druck gegen die heiße Brammenoberfläche, die noch eine Temperatur von ca. 1050 bis 1280°C hat, gefahren sind und dort abrollen. Damit die Bramme eine möglichst gleichmäßige Temperatur hält und damit die Halterollen und Treiberrollen gegen die Kontaktwärme mit der Bramme und gegen deren Strahlungswärme geschützt sind, werden die genannten Rollen mit einer Innenkühlung versehen, deren Gestaltung nachfolgend beschrieben wird.Figure 1 shows that the upsetting press in the area between the pressing tools above and below the slab 1 has height-
Figur 2 zeigt eine Halterolle 2, die aus einem inneren mit einem Lagerzapfen 16 versehenen Nabenteil 17 und aus einer äußeren mit dem Nabenteil verbindbaren hohlzylindrischen Laufrolle 18 besteht, wobei der Nabenteil außen bzw. die Laufrolle innen umlaufende Ringnuten 19 aufweist, von denen Verbindungskanäle 20 zu den Horizontalkanälen 21 bzw. zu den Eintrittskanälen 22 bzw. Austrittskanälen 23 abgehen. Die Ein- und Austrittskanäle verlaufen achsmittig. Eine Mehrzahl der Horizontalkanäle 21 ist peripher gleichverteilt im Umfangsbereich der Rollen und im wesentlichen parallel zu deren Ablaufflächen 24 angeordnet. Ferner sind die Lagergehäuse der Halterolle, insbesondere deren auf die Brammenoberfläche weisenden Lagerdeckel 25 zusätzlich mit einer Innenkühlung versehen, die im vorliegenden Fall zu einer länglich ausgebildeten Kühltasche 26 geformt ist. Die Anschlüsse für das Kühlmittel sind nicht näher dargestellt. Das Kühlmittel durchfließt die Kühlkanäle in Richtung der dargestellten Pfeile. Die Kühleinrichtung für die Halterolle und die Kühleinrichtung für deren Lagergehäuse bzw. Lagerdeckel sind miteinander durch Rohre verbunden, die nicht näher dargestellt sind, jedoch üblichem Rohrleitungsbau entsprechen können. Es ist erkennbar, daß mit der so gestalteten Anordnung der Kühlmittelkanäle eine optimale Innenkühlung der Halterollen, insbesondere der mit der hochtemperierten Brammenoberfläche in Berührung stehenden Abrollflächen der Halterollen, gewährleistet ist.FIG. 2 shows a
Figur 3 zeigt die Ausbildung der Kühlmittelkanäle in der angetriebenen Treiberrolle 5, wobei die Eintritts- bzw. Austrittskanäle 22, 23 als ein der Antriebsseite gegenüberliegend, in Achsmitte verlaufendes beabstandetes Doppelrohr 27 ausgebildet sind, wobei das innere Rohr 28 der Eintrittskanal und das äußere Rohr 29 der Austrittskanal ist, der jeweils über die Verbindungskanäle 20 mit den Horizontalkanälen 21 verbunden ist. Die Lagerdeckel 25 sind wie bei der Halterolle 2 mit einer Innenkühlung versehen, die als Kühltasche 26 geformt ist. Die Versorgung der Kühltasche mit dem Kühlmittel erfolgt über den Kühlmittelanschluß 30, von dem eine Rohrverbindung zu dem Lagerdeckel 25 abgeht. Es ist erkennbar, daß insbesondere mit den im Umfangsbereich der Treiberrolle 25 angeordneten Horizontalkanälen 21 eine sehr gute und gleichmäßige Kühlung der entsprechenden Abrollflächen der Rolle ermöglicht wird, die mit der hochtemperierten Brammenoberfläche in ständige Berührung kommen.FIG. 3 shows the formation of the coolant channels in the driven
Mit Hilfe der oben beschriebenen Maßnahmen wird die der Erfindung zugrundeliegende Aufgabe in vollem Umfang erfüllt, indem das Ausweichen oder Aufwölben der Bramme während einer kontinuierlich durchgeführten Breitenreduktion vermieden wird und eine unkontrollierte örtliche Abkühlung der Bramme verhindert wird, die immer dann eintreten würde, wenn statt der erfindungsgemäß vorgesehenen Innenkühlung der Halterollen und der Treiberrollen eine offene Wasserkühlung durchgeführt werden würdeWith the aid of the measures described above, the object on which the invention is based is achieved in full by avoiding the slab from deflecting or bulging during a continuous width reduction and preventing uncontrolled local cooling of the slab, which would always occur if instead of that According to the invention provided internal cooling of the holding rollers and the driver rollers, an open water cooling would be carried out
- 11
- BrammeSlab
- 22nd
- HalterolleHolding roll
- 33rd
- EinlaufbereichInfeed area
- 44th
- AuslaufbereichOutlet area
- 55
- TreiberrolleDriver role
- 66
- VorschubrichtungFeed direction
- 77
- HalterahmenHolding frame
- 88th
- Führungenguides
- 99
- VerstelleinrichtungAdjustment device
- 1010th
- QuertraverseCrossbar
- 11, 11'11, 11 '
- Holme des GerüstständersSpars of the scaffold stand
- 1212th
- SchwenkarmSwivel arm
- 1313
- VertikaltraverseVertical traverse
- 1414
- EinlaufrollgangInfeed roller table
- 1515
- AuslaufrollgangOutlet roller table
- 1616
- LagerzapfenBearing journal
- 1717th
- NabenteilHub part
- 1818th
- LaufrolleRoller
- 1919th
- RingnutRing groove
- 2020th
- VerbindungskanalConnecting channel
- 2121
- HorizontalkanalHorizontal channel
- 2222
- EintrittskanalEntry channel
- 2323
- AustrittskanalOutlet channel
- 2424th
- AbrollflächeRolling surface
- 2525th
- LagerdeckelBearing cap
- 2626
- KühltascheCooler bag
- 2727
- DoppelrohrDouble tube
- 2828
- InnenrohrInner tube
- 2929
- AußenrohrOuter tube
- 3030th
- KühlmittelanschlußCoolant connection
Claims (3)
- Holding roll (2) for supporting slabs (1) in an upsetting press for the reduction of the slab width in hot wide strip roughing trains with tool carriers arranged at both sides of the slab edge and receiving press tools, wherein the holding roll (2) of the upsetting press is arranged in the region between the press tools to be adjustable in height above and below the slab (1), and drive rolls (5) are arranged in the inlet and outlet region of the upsetting press above and below the slab, characterised thereby- that arranged in known manner in each holding roll (2) are coolant channels (20 to 23), which inlet and outlet channels (22, 23) extending axially centrally and with a plurality of horizontal channels (21) extending peripherally in the circumferential region of the holding roll substantially parallel to the rolling surfaces of the holding roll (2) as well as with connecting channels (20) between inlet and outlet channels (22, 23) and horizontal channels (21), and- that at least the holding roll (2) consists of an inner hub part (17) provided with bearing spigots (16) and an outer hollow cylindrical runing roller (18) connectible with the hub part, and that the hub part has encircling annular grooves (19) at the outside and the running roller encircling annular grooves (19) at the inside, from which grooves the connecting channels (20) lead off to the horizontal channels (21) or to the inlet channels (2a) or to the outlet channels (22, 23).
- Holding roll according to claim 1, characterised thereby that the bearing housings of the holding roll (2) particularly the bearing covers (25) thereof facing the slab surface, are additionally provided with an internal cooling in the form of a cooling pocket (26).
- Holding roll according to claim 1 or 2, characterised thereby that the coolant supply of the holding roll (2) stands in connection with the coolant supply for the bearing housings, and bearing covers (25) with cooling pockets (26), thereof.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4025389 | 1990-08-10 | ||
| DE4025389A DE4025389C2 (en) | 1990-08-10 | 1990-08-10 | Cooled conveyor or hold-down device for an upsetting press for reducing the width of rolled material |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0470436A2 EP0470436A2 (en) | 1992-02-12 |
| EP0470436A3 EP0470436A3 (en) | 1992-04-08 |
| EP0470436B1 true EP0470436B1 (en) | 1994-12-14 |
Family
ID=6412015
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP91112376A Expired - Lifetime EP0470436B1 (en) | 1990-08-10 | 1991-07-24 | Pressure roll for holding slabs down in an upsetting press |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US5313813A (en) |
| EP (1) | EP0470436B1 (en) |
| KR (1) | KR920004049A (en) |
| CN (1) | CN1034634C (en) |
| AT (1) | ATE115443T1 (en) |
| DE (2) | DE4025389C2 (en) |
| ES (1) | ES2066288T3 (en) |
| RU (1) | RU1831386C (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0943376B1 (en) | 1997-09-16 | 2004-12-22 | Ishikawajima-Harima Heavy Industries Co., Ltd. | Plate thickness pressing device and method |
| US7137283B2 (en) | 1997-10-14 | 2006-11-21 | Ishikawajima-Harima Heavy Industries Co., Ltd. | Plate reduction press apparatus and methods |
| US6971174B2 (en) | 2003-01-08 | 2005-12-06 | Alcoa Inc. | Method of manufacturing a caster roll |
| US6892793B2 (en) * | 2003-01-08 | 2005-05-17 | Alcoa Inc. | Caster roll |
| ITMI20041209A1 (en) | 2004-06-16 | 2004-09-16 | Danieli Off Mecc | BAR SPEED VARIATION DEVICE |
| DE102006058134A1 (en) * | 2006-12-09 | 2008-06-19 | Sms Demag Ag | Drive roller especially for trimming shears |
| CN103785689B (en) * | 2014-02-12 | 2016-01-13 | 武汉科技大学 | A kind of constant temperature roll based on conduction oil |
| US10618092B2 (en) * | 2015-03-20 | 2020-04-14 | Jdc, Inc. | Slit band sheet coiling-tension applying device |
| CN113333472B (en) * | 2021-08-08 | 2021-10-12 | 常州市坚力橡胶有限公司 | Rubber roll and machine tool assembled by same |
Family Cites Families (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE683932C (en) * | 1937-12-24 | 1939-11-18 | Kleinewefers Soehne J | Heatable and coolable roller, especially for paper and textile calenders |
| US3446275A (en) * | 1966-09-10 | 1969-05-27 | Tokyo Shibaura Electric Co | Cooled roller |
| US3604237A (en) * | 1967-04-03 | 1971-09-14 | Takao Kawanami | Work rolls and cooling method thereof |
| US3580032A (en) * | 1969-04-17 | 1971-05-25 | United Eng Foundry Co | Apparatus for reducing the width of metallic slabs |
| AT359671B (en) * | 1978-06-23 | 1980-11-25 | Voest Alpine Ag | DRIVING ROLLER SCAFFOLDING FOR A CONTINUOUS CASTING SYSTEM |
| AT368442B (en) * | 1981-01-26 | 1982-10-11 | Alber Franz | CONNECTING PIECE |
| JPS57165355U (en) * | 1981-04-13 | 1982-10-18 | ||
| US4506727A (en) * | 1982-06-14 | 1985-03-26 | Usm Corporation | Converted temperature control roll |
| EP0112516B1 (en) * | 1982-12-01 | 1988-05-11 | Hitachi, Ltd. | Press apparatus for reducing slab width |
| FI67726C (en) * | 1983-01-27 | 1985-05-10 | Outokumpu Oy | ANORDNING FOER UPPBAERANDE AV FOER BEHANDLING AVSETT MATERIAL VID KONTINUERLIGT ARBETANDE VAERMEBEHANDLINGSUGNAR |
| US4603729A (en) * | 1983-06-17 | 1986-08-05 | Kabushiki Kaisha Kobe Seiko Sho | Piping assembly for use in roll section of continuous casting line |
| JPS60121001A (en) * | 1983-12-02 | 1985-06-28 | Hitachi Ltd | Edging equipment |
| AT390975B (en) * | 1987-06-15 | 1990-07-25 | Andritz Ag Maschf | DEVICE WITH A WORKTOP HEATED WITH A HEAT MEDIUM |
| JPH0192401A (en) * | 1987-09-29 | 1989-04-11 | Tatsuji Nakajima | Production of panty |
| JPH0824940B2 (en) * | 1988-03-18 | 1996-03-13 | 石川島播磨重工業株式会社 | Buckling prevention device for width reduction press |
| DE3837643A1 (en) * | 1988-11-05 | 1990-05-10 | Schloemann Siemag Ag | Upsetting press for the step wise changing of the cross-section of metal bodies in strand form, e.g. slabs |
| JP2593534B2 (en) * | 1988-11-11 | 1997-03-26 | 株式会社日立製作所 | Hot rolling equipment |
| DE3900668C2 (en) * | 1989-01-09 | 2001-01-11 | Mannesmann Ag | Press for the lateral upsetting of workpieces, in particular slab upsetting press |
-
1990
- 1990-08-10 DE DE4025389A patent/DE4025389C2/en not_active Expired - Fee Related
-
1991
- 1991-07-24 AT AT91112376T patent/ATE115443T1/en not_active IP Right Cessation
- 1991-07-24 EP EP91112376A patent/EP0470436B1/en not_active Expired - Lifetime
- 1991-07-24 ES ES91112376T patent/ES2066288T3/en not_active Expired - Lifetime
- 1991-07-24 DE DE59103867T patent/DE59103867D1/en not_active Expired - Fee Related
- 1991-08-06 KR KR1019910013588A patent/KR920004049A/en not_active Application Discontinuation
- 1991-08-09 RU SU915001251A patent/RU1831386C/en active
- 1991-08-10 CN CN91105468A patent/CN1034634C/en not_active Expired - Fee Related
-
1992
- 1992-09-25 US US07/951,376 patent/US5313813A/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| US5313813A (en) | 1994-05-24 |
| EP0470436A2 (en) | 1992-02-12 |
| CN1034634C (en) | 1997-04-23 |
| CN1058735A (en) | 1992-02-19 |
| DE4025389A1 (en) | 1992-02-13 |
| ATE115443T1 (en) | 1994-12-15 |
| RU1831386C (en) | 1993-07-30 |
| DE4025389C2 (en) | 1999-01-07 |
| DE59103867D1 (en) | 1995-01-26 |
| ES2066288T3 (en) | 1995-03-01 |
| EP0470436A3 (en) | 1992-04-08 |
| KR920004049A (en) | 1992-03-27 |
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