EP1077095B1 - Descaling device for a continuously cast metal strip - Google Patents
Descaling device for a continuously cast metal strip Download PDFInfo
- Publication number
- EP1077095B1 EP1077095B1 EP00116996A EP00116996A EP1077095B1 EP 1077095 B1 EP1077095 B1 EP 1077095B1 EP 00116996 A EP00116996 A EP 00116996A EP 00116996 A EP00116996 A EP 00116996A EP 1077095 B1 EP1077095 B1 EP 1077095B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- strip
- hood
- water
- spray
- collecting channels
- 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
- 239000002184 metal Substances 0.000 title claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 34
- 238000005507 spraying Methods 0.000 claims abstract description 8
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 4
- 239000010959 steel Substances 0.000 claims abstract description 4
- 239000007921 spray Substances 0.000 claims description 28
- 238000012423 maintenance Methods 0.000 claims description 3
- 230000001154 acute effect Effects 0.000 claims description 2
- 238000005096 rolling process Methods 0.000 description 5
- 238000005452 bending Methods 0.000 description 4
- 239000011265 semifinished product Substances 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
Images
Classifications
-
- 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
- B21B45/08—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 hydraulically
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/45—Scale remover or preventor
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/45—Scale remover or preventor
- Y10T29/4528—Scale remover or preventor with rotary head
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/45—Scale remover or preventor
- Y10T29/4533—Fluid impingement
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/45—Scale remover or preventor
- Y10T29/4533—Fluid impingement
- Y10T29/4544—Liquid jet
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/45—Scale remover or preventor
- Y10T29/4572—Mechanically powered operator
Definitions
- the invention relates to a device for the hydromechanical descaling of continuously cast slabs and / or hot-rolled metal strip, in particular steel, comprising in each case one band side, in the belt running direction behind each other and laterally staggered arranged water spray nozzles for spraying high-pressure water jets on the two-sided tape surfaces, of which
- the rows of nozzles associated with the upper side of the band together with collecting channels can each be pivoted about an axis and can be adjusted in height relative to the band upper side in accordance with the signal of a measuring device.
- a known descaling device for descaling with high-pressure water is described in DE 43 28 303 A1.
- a series of rotating nozzle heads each having four circumferentially spaced nozzles for spraying the high pressure water on a bar immovable and arranged transversely to the direction of movement of the conveyed below rolled bar at such a distance that bulges and bumps on the nozzle device do not lead to a collision along conveyed rolling stock.
- this distance is comparatively large. This reduces the jet pressure of the high-pressure water at the rolling stock, which can only be compensated by increasing the water pressure or the amount of water and requires a large amount of energy.
- German patent application P 198 17 002.5 which applies a fluid to the surface of the semifinished product moved relative to the nozzle device under high pressure and optionally comprises a device for removing the scale , with which a more uniform Entzo matterspralltik, the so-called Impact, and thus a more uniform descaling over the bandwidth and length can be achieved as in conventional devices.
- a device for descaling semifinished products has been proposed by German patent application P 198 17 002.5, which applies a fluid to the surface of the semifinished product moved relative to the nozzle device under high pressure and optionally comprises a device for removing the scale , with which a more uniform Entzo mecanicspralldruck, the so-called Impact, and thus a more uniform descaling over the bandwidth and length can be achieved as in conventional devices.
- means are provided for the direct detection of the strip profile, wherein depending on this, the nozzle device and / or the tinder removal device are each individually height-adjustable.
- the document EP 0 360 480 B1 describes a descaling device for a material strip with a device for bending the strip by at least one bending roll at one point, and a water spraying device which sprays the water at a descaling point slightly spaced from the bending point in the strip running direction. Due to the bending of the band, the scale should be broken or detached from the surface of the band, whereby the descaling even at a comparatively lower water pressure can be performed.
- WO 97/117 97 describes a device for descaling semi-finished products.
- a nozzle device with a vertical component on the surface of the semi-finished product is arranged to be movable by means of a drive and there is provided a displacement sensor for detecting the distance of the nozzle device from the surface.
- a control device for influencing the drive is provided as a function of an output signal of the displacement transducer for keeping the distance constant.
- the document DE 29 22 701 C2 discloses a device for descaling hot rolled metal strip in a strip rolling line in which the strip is cold rolled after descaling in downstream rolling stands.
- Each nozzle row parallel to the belt plane is pivotable by means of a holder about an axis perpendicular to the belt plane and the belt longitudinal axis at an adjustable angle ⁇ to the belt longitudinal center axis and is maintained at an inclination angle, the so-called jet angle ⁇ of the nozzle axes to the belt surface of less than 90 °.
- the holder of a nozzle row bearing nozzle bearing block has a pivoting device for varying the angle of inclination or Strahlaufterrorismwinkels ⁇ of the nozzle axes to the strip surface while maintaining intersections of the nozzle axes with the band level.
- the present invention seeks to provide a device for hydromechanical descaling mentioned in the preamble of claim 1, which compared to the prior art to an extremely effective Function unit is developed further and has the significant advantages in the event of an accident.
- the device according to the characterizing features of claim 1, according to which the water collecting channels are independent of the water spray nozzles pivotable about a pivot point and height adjustable with respect to the metal band and are independently evasive and then the nozzle rows receiving spray bars the top of the tape a lever arm around the pivot point of the water collecting channels freely pivotable and thus height adjustable within limits and are arranged automatically evasive.
- the nozzle rows are arranged together with the receiving them spray bar and collapsible collecting rings on the top of the tape within a nozzle rows and spray bars with their pivot axes receiving hood, the hood of four corners the upper driver rollers respectively associated lifting cylinders worn.
- each one band side 3, 4 associated in the tape running direction one behind the other and laterally offset from each other in series arranged water spray nozzles 1, 1 'for spraying high-pressure water jets 10, 10' with about 600 bar on the two-sided tape surfaces.
- the rows of nozzles 1 associated with the upper side 3 of the band are pivotable together with collecting channels 2 in each case around an axis parallel to the strip surface and perpendicular to the longitudinal plane of the strip and are adjustable in height relative to the strip upper side 3 in accordance with the signal of a measuring device (not shown).
- the rows of nozzles 1 are arranged together with the receiving them spray bar 5 and cooperating collecting channels 2 on the upper side of the tape 3 within this with their pivot axes receiving hood 6.
- the hood 6 is supported by four cornering the upper drive rollers 8 each associated lifting cylinders 7.
- the interior of the hood 6 is relatively generously sized in height, width and length to avoid interference edges and Verwirbelungszonen for water and scale.
- the hood 6 can be decoupled by means of a releasable connection with the driver rollers 8.
- the hood 6 is shown in the raised position, wherein after disconnecting the driver roller 8 of left-side Anstellzylindern 7, the dashed line driver roller 8 'further cooperates with the counter-roller below the belt 20 and the belt can be pulled.
- the inventive design of the scale washer is designed so that the upper part with hood 6, lifting cylinders 7, drive rollers 8 and pipe connections for the purpose of repair and / or maintenance is preferably lifted by crane.
- the spray bars 5 'of the lower side 4 of the band can be lowered independently of the spray bars 5 of the band upper side 3.
- the belt 20 runs, as is generally customary, on drivable transport rollers of the roller table 14.
- the water collecting channels 2 are pivotable against a pivot point 9, independently of the water spraying nozzles 1, and are automatically height-adjustable with respect to the belt 20 with their catching mouth 12. This results in the advantage that when undisturbed operating condition, the jaw 12 of the gutter 2 on the belt surface 3 of the belt 20 slid loosely along slides, but when occurring, for example, a bent-head band head (Fig. 1 left side) automatically by pivoting about the fulcrum. 9 of the Tape surface is lifted. This will prevent disasters in the scale washer with great advantage.
- An embodiment of the device provides, as shown in Figure 2, that the hood 6 together with the spray bar 5 and collecting gutters 2 by means of the lifting cylinder 7 is comparatively high for releasing a free passage from the belt 20 can be raised.
- the design according to the invention realizes a device for the hydromechanical descaling of continuously cast slabs and / or hot-rolled metal strip, an extremely compact functional unit with significantly reduced susceptibility to interference.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
- Metal Rolling (AREA)
- Nozzles (AREA)
- Cleaning In General (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
Abstract
Description
Die Erfindung betrifft eine Vorrichtung zum hydromechanischen Entzundern von stranggegossenen Brammen und/oder warmgewalztem Metallband, insbesondere aus Stahl, umfassend jeweils einer Bandseite zugeordnete, in Bandlaufrichtung hintereinander sowie seitlich zueinander versetzt angeordnete Wasserspritzdüsen zum Aufspritzen von Hochdruck-Wasserstrahlen auf die beidseitigen Bandoberflächen, von welchen die der Bandoberseite zugeordneten Düsenreihen zusammen mit Auffangrinnen jeweils um eine Achse verschwenkbar und nach Maßgabe des Signals einer Messeinrichtung gegenüber der Bandoberseite höhenverstellbar sind.The invention relates to a device for the hydromechanical descaling of continuously cast slabs and / or hot-rolled metal strip, in particular steel, comprising in each case one band side, in the belt running direction behind each other and laterally staggered arranged water spray nozzles for spraying high-pressure water jets on the two-sided tape surfaces, of which The rows of nozzles associated with the upper side of the band together with collecting channels can each be pivoted about an axis and can be adjusted in height relative to the band upper side in accordance with the signal of a measuring device.
Beim Warmwalzen von Brammen und Bändern muß zur Erzielung einer guten Oberfläche der Zunder vor dem Walzen entfernt werden. Es ist bekannt, eine solche Entzunderung mittels Hochdruckwasser aus Düsenvorrichtungen bei Drücken bis zu 1000 bar vorzunehmen. Es ist bekannt, daß feste obere und untere Düsen mit relativ großem Abstand zur Bandoberfläche angeordnet sind, so daß Banddikkenunterschiede und Bandwellen ausgeglichen werden. Nachteil ist, daß auf dem "Wellenberg" die Entzunderungsparameter (Impact, Abstand, Überdeckung usw.) optimal sind, aber auf dem "flachen" Band schlecht sind.When hot rolling slabs and slabs, the slag must be removed before rolling to obtain a good surface. It is known to perform such descaling by means of high-pressure water from nozzle devices at pressures up to 1000 bar. It is known that fixed upper and lower nozzles are arranged at a relatively large distance from the belt surface, so that Banddikkenunterschiede and belt waves are compensated. Disadvantage is that on the "wave mountain" the Entzunderungsparameter (Impact, distance, coverage, etc.) are optimal, but are bad on the "flat" band.
Eine bekannte Entzundervorrichtung zum Entzundern mit Hochdruckwasser ist in der DE 43 28 303 A1 beschrieben. Bei der daraus bekannten Düsenvorrichtung ist eine Reihe von rotierenden Düsenköpfen mit jeweils vier über den Umfang verteilten Düsen zum Verspritzen des Hochdruckwasser an einem unbeweglich und quer zur Bewegungsrichtung des darunter geförderten Walzgutes angeordneten Balken in einem solchen Abstand angebracht, daß Aufwölbungen und Unebenheiten des an der Düsenvorrichtung entlang geförderten Walzgutes nicht zu einer Kollision führen. Infolge dessen ist dieser Abstand vergleichsweise groß. Dies reduziert den Strahldruck des Hochdruckwasser am Walzgut, was nur durch Erhöhung des Wasserdruckes oder der Wassermenge kompensierbar ist und einen großen Energieeinsatz erfordert.A known descaling device for descaling with high-pressure water is described in DE 43 28 303 A1. In the nozzle device known therefrom, a series of rotating nozzle heads each having four circumferentially spaced nozzles for spraying the high pressure water on a bar immovable and arranged transversely to the direction of movement of the conveyed below rolled bar at such a distance that bulges and bumps on the nozzle device do not lead to a collision along conveyed rolling stock. As a result, this distance is comparatively large. This reduces the jet pressure of the high-pressure water at the rolling stock, which can only be compensated by increasing the water pressure or the amount of water and requires a large amount of energy.
Um diesen Nachteil zu vermeiden wurde mit der nicht vorveröffentlichten deutschen Patentanmeldung P 198 17 002.5 eine Vorrichtung zum Entzundern von Halbzeugen vorgeschlagen, welche auf die Oberfläche des relativ zu der Düsenvorrichtung bewegten Halbzeugs unter Hockdruck ein Fluid aufbringt, sowie wahlweise eine Vorrichtung zum Abführen des Zunders umfaßt, mit der ein gleichmäßigerer Entzunderungspralldruck, der sogenannte Impact, und damit eine gleichmäßigere Entzunderung über der Bandbreite und -länge als bei konventionellen Einrichtungen erreicht werden kann. Hierfür sind Mittel vorgesehen zum direkten Erfassen des Bandprofils, wobei abhängig hiervon die Düsenvorrichtung und/oder die Zunderabführvorrichtung jeweils einzeln höhenverstellbar sind.In order to avoid this disadvantage, a device for descaling semifinished products has been proposed by German patent application P 198 17 002.5, which applies a fluid to the surface of the semifinished product moved relative to the nozzle device under high pressure and optionally comprises a device for removing the scale , with which a more uniform Entzonderungspralldruck, the so-called Impact, and thus a more uniform descaling over the bandwidth and length can be achieved as in conventional devices. For this purpose, means are provided for the direct detection of the strip profile, wherein depending on this, the nozzle device and / or the tinder removal device are each individually height-adjustable.
Das Dokument EP 0 360 480 B1 beschreibt eine Entzunderungsvorrichtung für ein Materialband mit einer Einrichtung zum Biegen des Bandes durch mindestens eine Biegewalze an einem Punkt, und einer Wasserspritzeinrichtung, die das Wasser an einer in Bandlaufrichtung geringfügig von der Biegestelle beabstandeten Entzunderungsstelle aufsprüht. Durch die Biegung des Bandes soll der Zunder aufgebrochen bzw. von der Fläche des Bandes gelöst werden, wodurch die Entzunderung schon bei einem vergleichsweise geringerem Wasserdruck durchgeführt werden kann.The document EP 0 360 480 B1 describes a descaling device for a material strip with a device for bending the strip by at least one bending roll at one point, and a water spraying device which sprays the water at a descaling point slightly spaced from the bending point in the strip running direction. Due to the bending of the band, the scale should be broken or detached from the surface of the band, whereby the descaling even at a comparatively lower water pressure can be performed.
Das Dokument WO 97/117 97 beschreibt eine Einrichtung zum Entzundern von Halbzeugen. Hierbei ist eine Düsenvorrichtung mit einer Vertikalkomponente über der Oberfläche des Halbzeuges mittels eines Antriebes beweglich angeordnet und es ist ein Wegaufnehmer zum Erfassen des Abstandes der Düsenvorrichtung von der Oberfläche vorgesehen. Femer ist eine Steuervorrichtung zum Beeinflussen des Antriebes abhängig von einem Ausgangssignal des Wegaufnehmers zum Konstanthalten des Abstands vorgesehen.The document WO 97/117 97 describes a device for descaling semi-finished products. In this case, a nozzle device with a vertical component on the surface of the semi-finished product is arranged to be movable by means of a drive and there is provided a displacement sensor for detecting the distance of the nozzle device from the surface. Furthermore, a control device for influencing the drive is provided as a function of an output signal of the displacement transducer for keeping the distance constant.
Das Dokument DE 29 22 701 C2 offenbart eine Vorrichtung zum Entzundern von warmgewalztem Metallband in einer Bandwalzstraße, in der das Band nach dem Entzundern in nachgeschalteten Walzgerüsten kaltgewalzt wird. Es sind jeweils einer Bandseite zugeordnete, in Bandlaufrichtung hintereinander, jedoch versetzt zueinander angeordnete Düsenreihen zum Aufstrahlen von Entzunderungsmittel vorgesehen. Jede zur Bandebene parallele Düsenreihe ist mittels einer Halterung um eine zur Bandebene und zur Bandlängsmittelachse senkrechte Achse unter einem einstellbaren Winkel α zur Bandlängsmittelachse verschwenkbar und ist mit einem Neigungswinkel, dem sogenannten Strahlauftreffwinkel β der Düsenachsen zur Bandoberfläche von weniger als 90 ° gehalten. Die Halterung eines die Düsenreihe lagernden Düsenlagerblockes weist eine Schwenkvorrichtung auf zum Verändern des Neigungswinkels bzw. Strahlauftreffwinkels β der Düsenachsen zur Bandoberfläche bei gleichzeitiger Beibehaltung von Schnittpunkten der Düsenachsen mit der Bandebene.The
Ausgehend hiervon liegt der Erfindung die Aufgabe zugrunde, eine Vorrichtung zum hydromechanischen Entzundern der im Oberbegriff von Anspruch 1 genannten Art anzugeben, die im Vergleich zum Stand der Technik zu einer äußerst effektiven Funktionseinheit weiterentwickelt ist und die signifikante Vorteile im Falle einer Havarie hat.Proceeding from this, the present invention seeks to provide a device for hydromechanical descaling mentioned in the preamble of claim 1, which compared to the prior art to an extremely effective Function unit is developed further and has the significant advantages in the event of an accident.
Die Lösung der Aufgabe gelingt mit der Vorrichtung entsprechend den kennzeichnenden Merkmalen des Anspruchs 1, wonach die Wasserauffangrinnen entgegen der Bandlaufrichtung unabhängig von den Wasserspritzdüsen um einen Schwenkpunkt verschwenkbar und gegenüber dem Metallband höhenverstellbar sind und selbständig ausweichbar sind und wonach die die Düsenreihen aufnehmenden Spritzbalken der Bandoberseite mit einem Hebelarm um den Schwenkpunkt der Wasserauffangrinnen frei verschwenkbar und damit in Grenzen höhenverstellbar sowie selbsttätig ausweichbar angeordnet sind. Mit diesen Maßnahmen wird die Havariegefahr mit dem Metallband deutlich reduziert.The solution of the problem is achieved with the device according to the characterizing features of claim 1, according to which the water collecting channels are independent of the water spray nozzles pivotable about a pivot point and height adjustable with respect to the metal band and are independently evasive and then the nozzle rows receiving spray bars the top of the tape a lever arm around the pivot point of the water collecting channels freely pivotable and thus height adjustable within limits and are arranged automatically evasive. These measures significantly reduce the risk of accidents with the metal strip.
In erfindungsgemäßer Ausgestaltung der Vorrichtung ist vorgesehen, daß die Düsenreihen zusammen mit den sie aufnehmenden Spritzbalken sowie damit zusammenwirkbaren Auffangringen auf der Bandoberseite innerhalb einer die Düsenreihen und Spritzbalken mit ihren Schwenkachsen aufnehmenden Haube angeordnet sind, wobei die Haube von vier eckenständigen den oberen Treiberrollen jeweils zugeordneten Hubzylindern getragen ist.In the inventive embodiment of the device is provided that the nozzle rows are arranged together with the receiving them spray bar and collapsible collecting rings on the top of the tape within a nozzle rows and spray bars with their pivot axes receiving hood, the hood of four corners the upper driver rollers respectively associated lifting cylinders worn.
Mit der erfindungsgemäßen Ausgestaltung der Entzunderrungsvorrichtung wird eine äußerst kompakte Bauart verwirklicht, wobei die die Spritz- und Auffangrinnen aufnehmende Haube mit Unterstützung durch die vier eckenständigen Hubzylinder, beispielsweise bei einem nach oben aufgebogenen kopfseitigen Bandteil, unverzüglich anhebbar ist und Reparatur und/oder Wartung vereinfacht wird.With the inventive design of the Entzunderrungsvorrichtung an extremely compact design is realized, wherein the injection and collecting gutters receiving hood with the support of the four corner-mounted lifting cylinder, for example, in an upwardly bent head-side hinge part, immediately liftable and repair and / or maintenance is simplified ,
Weitere Ausgestaltungen der Erfindung sind entsprechend den Unteransprüchen vorgesehen.Further embodiments of the invention are provided according to the subclaims.
Einzelheiten, Merkmale und Vorteile der Erfindung ergeben sich aus der nachstehenden Erläuterung eines in den Zeichnungen schematisch dargestellten Ausführungsbeispieles. Es zeigen:
- Figur 1
- in Seitenansicht und im Längsschnitt einen Zunderwäscher nach der Erfindung;
Figur 2- in Seitenansicht und im Längsschnitt den Zunderwäscher gemäß Fig. 1 mit angehöbenem Oberteil.
- FIG. 1
- in side view and in longitudinal section a scale washer according to the invention;
- FIG. 2
- in side view and in longitudinal section the tinder scrubber of FIG. 1 with angehöbenem upper part.
Die aus der Zusammenschau der Figuren 1 und 2 ersichtliche Vorrichtung zum hydromechanischen Entzundern von stranggegossenen Brammen und/oder warmgewalztem Metallband 20, insbesondere aus Stahl, umfaßt jeweils einer Bandseite 3, 4 zugeordnete, in Bandlaufrichtung hintereinander sowie seitlich zueinander in Reihe versetzt angeordnete Wasserspritzdüsen 1, 1' zum Aufspritzen von Hochdruck-Wasserstrahlen 10, 10' mit etwa 600 bar auf die beidseitigen Bandoberflächen. Die der Bandoberseite 3 zugeordneten Düsenreihen 1 sind zusammen mit Auffangrinnen 2 jeweils um eine zur Bandoberfläche parallele und zur Bandlängsmittelebene senkrechte Achse verschwenkbar und sind nach Maßgabe des Signals einer Meßeinrichtung (nicht gezeigt) gegenüber der Bandoberseite 3 höhenverstellbar. Die Düsenreihen 1 sind zusammen mit den sie aufnehmenden Spritzbalken 5 sowie damit zusammenwirksamen Auffangrinnen 2 auf der Bandoberseite 3 innerhalb einer diese mit ihren Schwenkachsen aufnehmenden Haube 6 angeordnet. Die Haube 6 ist von vier eckenständigen den oberen Treiberrollen 8 jeweils zugeordneten Hubzylindern 7 getragen. Der Innenraum der Haube 6 ist in Höhe, Breite und Länge zur Vermeidung von Störkanten und Verwirbelungszonen für Wasser und Zunder vergleichsweise großzügig bemessen.The apparent from the synopsis of Figures 1 and 2 apparatus for hydromechanical descaling of continuously cast slabs and / or hot-rolled
Die Haube 6 ist mittels einer lösbaren Verbindung mit den Treiberrollen 8 abkoppelbar. Beispielsweise ist in Figur 2 die Haube 6 in angehobener Position gezeigt, wobei nach Abkoppeln der Treiberrolle 8 von linksseitigen Anstellzylindern 7 die gestrichelt gezeichnete Treiberrolle 8' weiterhin mit der Gegenrolle unterhalb des Bandes 20 zusammenwirkt und das Band gezogen werden kann.The
In den Figuren 1 und 2 ist weiterhin gezeigt, daß im oberen Bereich der Haube 6, seitlich vom Band 20, Auffangrinnen 2' für Wasser und Zunder aus den der Bandunterseite 4 zugeordneten Spritzdüsen 1` vorgesehen sind.In Figures 1 and 2 is further shown that in the upper region of the
Die erfindungsgemäße Konstruktion des Zunderwäschers ist so ausgebildet, daß das Oberteil mit Haube 6, Hubzylindern 7, Treiberrollen 8 und Rohranschlüssen zwecks Reparatur und/oder Wartung vorzugsweise mittels Kran abhebbar ist.The inventive design of the scale washer is designed so that the upper part with
Weiterhin ist vorgesehen, daß in vergleichsweise dichtem Abstand vor dem Zunderwäscher Spritzrohre 13 für Niederdruckwasser von beispielsweise 10 bar zum Aufbrechen des Zunders mittels spontaner Temperaturabschreckung angeordnet sind. Sehr hilfreich kann auch vorgesehen sein, daß hinter dem Zunderwäscher wenigstens ein Spritzrohr 13' zur Endreinigung des Bandes 20 von gelöstem Zunder angeordnet ist.Furthermore, it is provided that are arranged at a comparatively close distance in front of the scale
Die Spritzbalken 5' der Bandunterseite 4 sind unabhängig von den Spritzbalken 5 der Bandoberseite 3 absenkbar. Dabei läuft das Band 20, wie allgemein üblich, auf antreibbaren Transportrollen des Rollgangs 14.The spray bars 5 'of the lower side 4 of the band can be lowered independently of the
Die Wasserauffangrinnen 2 sind entgegen der Bandlaufrichtung unabhängig von den Wasserspritzdüsen 1 um einen Schwenkpunkt 9 verschwenkbar und sind gegenüber dem Band 20 mit ihrem Fangmaul 12 selbsttätig höhenverstellbar. Hierdurch ergibt sich der Vorteil, daß bei ungestörtem Betriebszustand das Fangmaul 12 der Auffangrinnen 2 auf der Bandoberfläche 3 des Bandes 20 lose aufliegend entlang gleitet, jedoch bei Auftreten bspw. eines hochgebogenen Bandkopfes (Fig. 1 linke Seite) selbsttätig durch Verschwenken um den Drehpunkt 9 von der Bandoberfläche abgehoben wird. Dadurch werden mit großem Vorteil Havarien im Zunderwäscher verhindert.The water collecting
Weiterhin ist vorgesehen, daß die Spritzbalken 5 der Bandoberseite 3, wie dies aus der Figur 1 erkennbar ist, mit einem Hebelarm 11 um den Schwerpunkt 9 der Wasserauffangrinnen 2 frei verschwenkbar und damit in Grenzen höhenverstellbar sowie selbsttätig vor einem Hindernis ausweichbar angeordnet sind. Darüber hinaus sind die Spritzdüsen 1, 1' winkeleinstellbar und bevorzugt in einem spitzen Winkel α entgegengesetzt zur Bandlaufrichtung gegen das Band einstellbar.It is further provided that the
Eine Ausgestaltung der Vorrichtung sieht vor, wie dies in Figur 2 gezeigt ist, daß die Haube 6 zusammen mit den Spritzbalken 5 und Auffangrinnen 2 mittels der Hubzylinder 7 vergleichsweise hoch zur Freigabe eines freien Durchgangs vom Band 20 anhebbar ist.An embodiment of the device provides, as shown in Figure 2, that the
Wie die Figuren 1 und 2 zeigen, verwirklicht die erfindungsgemäße Bauart eine Vorrichtung zum hydromechanischen Entzundern von stranggegossenen Brammen und/oder warmgewalztem Metallband eine äußerst kompakte Funktionseinheit bei signifikant reduzierter Störanfälligkeit.As FIGS. 1 and 2 show, the design according to the invention realizes a device for the hydromechanical descaling of continuously cast slabs and / or hot-rolled metal strip, an extremely compact functional unit with significantly reduced susceptibility to interference.
Claims (11)
- Device for hydromechanical descaling of continuously cast slabs and/or hot-rolled metal strip (20), particularly of steel, comprising water spray nozzles (1, 1'), which are associated with each strip side (3, 4) and are arranged in succession in strip running direction as well as laterally offset relative to one another, for spraying high-pressure water jets (10, 10') onto the strip surfaces at both sides, of which the nozzle rows (1) associated with the strip upper side (3) together with collecting channels (2) are respectively pivotable about an axis and adjustable in height relative to the strip upper side (3) in dependence on the signal of a metering device, characterised in that the water collecting channels (2) are pivotable against the strip running direction about a pivot point (9) and independently of the water spray nozzles (1) and are adjustable in height relative to the metal strip (20) and automatically deflectable and that the spray bars (5), which receive the nozzle rows, of the strip upper side (3) are arranged to be freely pivotable by a lever arm (11) about the pivot point (9) of the water collecting channels (2) and thus adjustable in height within limits as well as automatically deflectable.
- Device according to claim 1, characterised in that the nozzle rows (1) together with the spray bars (5) receiving them as well as collecting channels (2) co-operable therewith are arranged on the strip upper side (3) within a hood (6) receiving the nozzle rows and spray bars together with their pivot axes, and that the hood (6) is carried by four stroke cylinders (7) standing at the corners and respectively associated with the upper drive rollers (8).
- Device according to claim 1 or 2, characterised in that the spray bars (5') of the strip lower side (4) can be lowered independently of the spray bars (5) of the strip upper side (3).
- Device according to one of claims 1 to 3, characterised in that the water spray nozzles (1, 1') are angularly adjustable and preferably settable at an acute angle (α) relative to the metal strip oppositely to the strip running direction.
- Device according to one of claims 1 to 4, characterised in that the inner space of the hood (6) is dimensioned to be comparatively spacious in height, width and length for avoidance of disturbing edges and turbulence zones for water and scale.
- Device according to one of claims 1 to 5, characterised in that the hood (6) can be decoupled from the drive rollers (8) by means of a detachable connection.
- Device according to one of claims 1 to 6, characterised in that collecting channels (2') for water and scale from the spray pipes (1') associated with the strip lower side (4) are provided in the upper region of the hood (6) laterally of the metal strip (20).
- Device according to one of claims 1 to 7, characterised in that the upper part of the scale washer together with hood (6), stroke cylinders (7), drive rollers (8) and pipe connections can be raised, preferably by means of a crane for the purpose of repair and/or maintenance.
- Device according to one of claims 1 to 8, characterised in that the hood (6) together with spray bars (5) and collecting channels (2) can be raised by means of the stroke cylinders (7) for freeing a free passage of the metal strip (20).
- Device according to one of claims 1 to 9, characterised in that spray pipes (13) for low-pressure water of, for example, 10 bar are arranged at a comparatively close spacing in front of the scale washer.
- Device according to one of claims 1 to 10, characterised in that at least one spray pipe (13') is arranged behind the scale washer.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19938705A DE19938705A1 (en) | 1999-08-14 | 1999-08-14 | Descaling device for a continuously cast metal strip |
DE19938705 | 1999-08-14 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1077095A2 EP1077095A2 (en) | 2001-02-21 |
EP1077095A3 EP1077095A3 (en) | 2003-10-29 |
EP1077095B1 true EP1077095B1 (en) | 2006-01-04 |
Family
ID=7918493
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00116996A Expired - Lifetime EP1077095B1 (en) | 1999-08-14 | 2000-08-08 | Descaling device for a continuously cast metal strip |
Country Status (9)
Country | Link |
---|---|
US (1) | US6385832B1 (en) |
EP (1) | EP1077095B1 (en) |
JP (1) | JP4671479B2 (en) |
AT (1) | ATE314894T1 (en) |
BR (1) | BR0003485A (en) |
CA (1) | CA2315938C (en) |
DE (2) | DE19938705A1 (en) |
ES (1) | ES2254081T3 (en) |
MX (1) | MXPA00007939A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1900449A1 (en) * | 2006-09-16 | 2008-03-19 | SMS Demag AG | Spray header of a hydraulic descaling facility and method for operating such a spray header |
DE102008047029A1 (en) | 2008-09-13 | 2010-03-18 | Sms Siemag Aktiengesellschaft | descaling |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20050198794A1 (en) * | 2000-02-14 | 2005-09-15 | Sadler Love & Associates, Inc. | Apparatus for the descaling of metal |
DE10110324A1 (en) * | 2001-03-03 | 2002-09-05 | Sms Demag Ag | Process for descaling tapes |
US6776359B2 (en) * | 2001-11-06 | 2004-08-17 | Kolene Corporation | Spray nozzle configuration |
DE102004060825A1 (en) * | 2004-12-17 | 2006-06-29 | Sms Demag Ag | Method and device for descaling surfaces |
DE102005047936A1 (en) * | 2005-10-06 | 2007-04-12 | Sms Demag Ag | Method and device for cleaning slabs, thin slabs, profiles or the like |
EP2028290A1 (en) * | 2007-08-21 | 2009-02-25 | ArcelorMittal France | Method and device for secondary descaling steel strip with low pressure water jets |
DE102010004563A1 (en) * | 2010-01-14 | 2011-07-21 | SMS Siemag AG, 40237 | Method and device for inline surface treatment of slabs |
DE102012214298A1 (en) | 2012-08-10 | 2014-02-13 | Sms Siemag Ag | Process for the purification and / or descaling of a slab or slag by means of a scale scrubber and scale scrubber |
GB2514599B (en) | 2013-05-30 | 2015-07-08 | Siemens Vai Metals Tech Gmbh | Adjustable descaler |
CN104475466A (en) * | 2014-11-25 | 2015-04-01 | 北京首钢国际工程技术有限公司 | High-pressure water descaling device for hot rolled strip |
DE102016212967A1 (en) | 2016-06-17 | 2017-12-21 | Sms Group Gmbh | Arrangement for processing a slab or a strip |
DE102016219830A1 (en) | 2016-10-12 | 2018-04-12 | Sms Group Gmbh | Apparatus and method for descaling a slab |
CN111468544A (en) * | 2020-04-16 | 2020-07-31 | 河钢乐亭钢铁有限公司 | Descaling method for solving problem of pressing-in of head and tail iron sheets on upper surface of hot rolling box mode strip steel |
CN114074124A (en) * | 2021-11-10 | 2022-02-22 | 北京中冶设备研究设计总院有限公司 | Water collecting tank for removing phosphorus by high-pressure water |
CN114535321B (en) * | 2022-03-22 | 2023-07-25 | 宝武杰富意特殊钢有限公司 | Method for detecting high-pressure water descaling effect of square billets by using pressure sensitive paper |
CN115415342A (en) * | 2022-09-26 | 2022-12-02 | 一重集团大连工程技术有限公司 | Pinch roll type ultrahigh-pressure small-flow descaler |
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JPS54161189A (en) | 1978-06-09 | 1979-12-20 | Ishikawajima Harima Heavy Ind Co Ltd | Fluid injection device |
DD160218A3 (en) * | 1981-03-23 | 1983-05-18 | Roland Daehnert | TIPPING DEVICE FOR METALLURGICAL ROLLING MILLS |
JPS6192407U (en) * | 1984-11-22 | 1986-06-14 | ||
JPS632212Y2 (en) * | 1984-12-17 | 1988-01-20 | ||
JPS6368213A (en) * | 1986-09-08 | 1988-03-28 | Kawasaki Steel Corp | Header for descaling by highly pressurized water |
JPH0673694B2 (en) * | 1988-09-20 | 1994-09-21 | 株式会社日立製作所 | Descaling device for rolled material, hot rolling equipment, and rolled material |
RU2033873C1 (en) * | 1989-12-19 | 1995-04-30 | Арендное объединение "Новокраматорский машиностроительный завод" | Device for hydraulic removal of secondary scale from rolled stock on rolling mill |
US5272798A (en) * | 1992-08-05 | 1993-12-28 | Kolene Corporation | Method and apparatus for descaling metal strip |
DE4328303C2 (en) * | 1992-12-23 | 1997-02-13 | Juergen Gaydoul | Device for descaling hot rolled material |
DE4345351B4 (en) * | 1993-01-28 | 2004-08-12 | Sms Demag Ag | descaling |
JP3307771B2 (en) * | 1993-08-23 | 2002-07-24 | ハンス‐ユルゲン、ガイドール | Means for descaling hot rolled steel sheets |
JPH08215735A (en) * | 1995-02-14 | 1996-08-27 | Nippon Steel Corp | Scale removing equipment in continuous casting and rolling line |
DE19535789C2 (en) * | 1995-09-26 | 1997-09-11 | Hermetik Hydraulik Ab | Device for descaling semi-finished products |
JPH10128425A (en) * | 1996-10-31 | 1998-05-19 | Nippon Steel Corp | Descaling method |
DE19817002A1 (en) * | 1998-04-17 | 1999-10-21 | Schloemann Siemag Ag | Apparatus for descaling of semifinished products e.g. metal strips and sheets |
-
1999
- 1999-08-14 DE DE19938705A patent/DE19938705A1/en not_active Withdrawn
-
2000
- 2000-08-08 DE DE50012007T patent/DE50012007D1/en not_active Expired - Lifetime
- 2000-08-08 ES ES00116996T patent/ES2254081T3/en not_active Expired - Lifetime
- 2000-08-08 EP EP00116996A patent/EP1077095B1/en not_active Expired - Lifetime
- 2000-08-08 AT AT00116996T patent/ATE314894T1/en active
- 2000-08-10 BR BR0003485-1A patent/BR0003485A/en not_active IP Right Cessation
- 2000-08-11 JP JP2000244364A patent/JP4671479B2/en not_active Expired - Fee Related
- 2000-08-11 US US09/637,554 patent/US6385832B1/en not_active Expired - Lifetime
- 2000-08-14 MX MXPA00007939A patent/MXPA00007939A/en active IP Right Grant
- 2000-08-14 CA CA002315938A patent/CA2315938C/en not_active Expired - Fee Related
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1900449A1 (en) * | 2006-09-16 | 2008-03-19 | SMS Demag AG | Spray header of a hydraulic descaling facility and method for operating such a spray header |
DE102008047029A1 (en) | 2008-09-13 | 2010-03-18 | Sms Siemag Aktiengesellschaft | descaling |
Also Published As
Publication number | Publication date |
---|---|
DE19938705A1 (en) | 2001-02-15 |
ATE314894T1 (en) | 2006-02-15 |
US6385832B1 (en) | 2002-05-14 |
EP1077095A3 (en) | 2003-10-29 |
EP1077095A2 (en) | 2001-02-21 |
CA2315938C (en) | 2008-11-25 |
BR0003485A (en) | 2001-04-03 |
CA2315938A1 (en) | 2001-02-14 |
JP4671479B2 (en) | 2011-04-20 |
JP2001071022A (en) | 2001-03-21 |
MXPA00007939A (en) | 2004-11-10 |
DE50012007D1 (en) | 2006-03-30 |
ES2254081T3 (en) | 2006-06-16 |
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