EP1167578B1 - Apparatus for treating elongated metallic work pieces, in particular for pickling rolled strip - Google Patents

Apparatus for treating elongated metallic work pieces, in particular for pickling rolled strip Download PDF

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Publication number
EP1167578B1
EP1167578B1 EP01113485A EP01113485A EP1167578B1 EP 1167578 B1 EP1167578 B1 EP 1167578B1 EP 01113485 A EP01113485 A EP 01113485A EP 01113485 A EP01113485 A EP 01113485A EP 1167578 B1 EP1167578 B1 EP 1167578B1
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EP
European Patent Office
Prior art keywords
heat exchangers
treatment
treatment liquid
float
channel
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EP01113485A
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German (de)
French (fr)
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EP1167578A1 (en
Inventor
Peter Schüler
Stefan Volz
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SMS Siemag AG
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SMS Siemag AG
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    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
    • C23G3/00—Apparatus for cleaning or pickling metallic material
    • C23G3/02—Apparatus for cleaning or pickling metallic material for cleaning wires, strips, filaments continuously
    • C23G3/024—Apparatus for cleaning or pickling metallic material for cleaning wires, strips, filaments continuously by a combination of dipping and spraying
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
    • C23G3/00—Apparatus for cleaning or pickling metallic material
    • C23G3/02—Apparatus for cleaning or pickling metallic material for cleaning wires, strips, filaments continuously
    • C23G3/023—Apparatus for cleaning or pickling metallic material for cleaning wires, strips, filaments continuously by spraying

Definitions

  • the invention relates to a device for the treatment of metallic strand material, in particular for pickling rolled strip, which is transportable through a treatment channel and turbulently irradiated with treatment liquid from nozzles, wherein the liquid jets are set at the channel entrance in strand transport direction and are directed at the channel exit opposite to the strand transport direction to to inhibit rapid drainage of the treatment liquid.
  • Such a device is known from DE-OS 29 11 701 known.
  • This design aims to avoid the difficulties in the use of pinch rollers and thus a transfer of treatment liquid between individual tanks. Supporting or guiding rollers should be replaced by other elements.
  • this design is based on oblong rectangular treatment chambers and, on the other hand, treatment nozzles are arranged parallel and perpendicular to the strand transport direction.
  • deflectors are arranged above and below the extruded material, which are intended to effect a better spraying of the extruded material.
  • the measures described are directed exclusively to further turbulence and increase in turbulence and are purely mechanical approaches dar. Further chemical action is neither intended nor intended.
  • the EP 0 058 216 A1 describes a device for the chemical or electrochemical surface treatment of material to be treated in a heated liquid treatment medium consisting of a lidded liquid container, in particular Bandbeizstrom, in which the strip surface is partially covered to reduce the evaporation surface.
  • the basis of this invention is to optimize the coverage of the evaporation surface of the bath so that the evaporation rate is reduced as much as possible.
  • the EP 0 795 629 A1 relates to a device for surface treatment of baths with liquids, in particular for pickling rolled metal strips in a trough-shaped, in particular closed by a lid container.
  • a plate immersed in the liquid above the strip an improved reflux of the accumulated treatment liquid from the region of the strip outlet to the strip inlet is to be ensured in the treatment tank, so that the accumulation height in the region of the strip outlet is reduced.
  • a treatment channel with a low bath depth while maintaining the free surface of the treatment medium. This ensures a targeted circulation and mixing of the treatment medium in the treatment tank.
  • the invention is based on the object, in addition to the physical effects of turbulence, to improve the chemical effects of the treatment liquid and possibly even the surface state of the material in the interest of increasing throughput and extending the treatment to critical steel grades.
  • the treatment channel is formed at the top by means of juxtaposed floats facing the strand, are each provided with individual or more, area-distributed heat exchangers whose heat energy is transferable to the treatment liquid and / or the stock.
  • An additional thermal input increases the chemical effects by bringing the treatment liquid more quickly to the desired reaction temperature and thus reacting earlier and more intensively.
  • a further improvement in the efficiency of such devices is achieved in combination with chemical reactions in that the area-distributed heat exchangers are assigned flow baffles, which serve downwards above for mixing the treatment liquid flow.
  • the flow baffles are arranged between two heat exchangers, laterally from a heat exchanger and / or in front of or in front of a pair of heat exchangers. As a result, a particularly intensive turbulence of the treatment liquid is achieved.
  • the transfer of heat energy to the strand material and / or the treatment liquid takes place particularly intensively, in that the heat exchangers each consist of heating pipes or heating plates laid on the underside of the floating body.
  • a further embodiment provides that the heating tubes are made of PVDF or PTFE and operated with water vapor of about 130 - 135 ° C. This training ensures a good heat load capacity at relatively high temperatures.
  • the floats are attached to the heat exchangers each with distance to a surrounding, the float facing open lid housing.
  • the cover housing is connected by means of a plurality of spacers with the float.
  • the handling of the float, the heat exchanger and the cover housing is further facilitated by the fact that the cover housing can be lifted together with the float by means of a lifting harness or a hydraulic device or placed on the treatment chamber. This allows the heat exchanger outside the device to be easily and quickly replaced or repaired.
  • the floating body is made of plastic, whereby a considerably lightweight construction can be created.
  • the device for the treatment of metallic strand 1, in particular of rolled strip 1 a, which is transported through a treatment channel 2, has a first treatment chamber 3 and a second treatment chamber 4 lying one behind the other.
  • the stock 1 is irradiated with treatment liquid 5 from nozzles 6 with liquid jets 7 in such a way that a turbulent treatment liquid flow 5a exists.
  • the liquid jets 7 are set at the channel entrance 8 in the strand transport direction 9 and opposite to the channel exit 10 to the strand transport direction 9, so that a rapid outflow of the treatment liquid 5 from the respective treatment chamber 3 and 4 is at least inhibited.
  • the strand 1 lies within the treatment chambers 3, 4 on sliding blocks 3a and 4a.
  • the treatment channel 2 is formed on its upper side 2a by means of juxtaposed floats 11, which are facing the material 1, each equipped with individual or multiple, area-distributed heat exchangers 12 whose heat energy is transferred to the treatment liquid 5 and / or the extruded material 1.
  • the entering with the desired inlet temperature treatment liquid 5 intensifies the chemical reaction between the surface of the strand 1, in particular of rolled strip 1 a, and leads to more intensive cleaning operations and thus to an optimization of the process and a higher throughput.
  • the turbulence also contributes to these processes, so that a significant improvement of the process takes place in combination with the heated treatment liquid 5 introduced.
  • Fig. 2 It can also be seen that the flow guide plates 13 are arranged between two heat exchangers 12, laterally from a heat exchanger 12 and / or in front of or in front of a pair of heat exchangers 12 in the strand transport direction 9.
  • the heat exchangers 12 each consist of heating pipes 14 or heating plates laid on the underside 11a of the floating bodies 11.
  • the heating tubes 14 are laid serpentine to Schuwaben 15 and are located in closed sections 11b of the float 11.
  • the heating tubes are made of PVDF (polyvinylidene fluoride) or PTFE (polytetrafluoroethylene) and carry steam of about 130-135 ° C.
  • the floats 11 are connected to the heat exchangers 12 each with a distance 16 to a surrounding, the floating body 11 facing open lid housing 17.
  • the distance 16 is determined by means of a plurality of spacers 18 between the float 11 and the cover housing 17.
  • the cover housing 17 can be lifted out as a unit together with the floating body 11 and the heat exchangers 12 by means of a lifting harness 19 or by means of a hydraulic device or can be placed on the treatment chamber 3 or 4 again.
  • the floating body 11 may be made of plastic to take only a light weight and any disturbing vapors from the treatment liquid 5 to resist and catch them.
  • the hot steam is fed in direction 20 through a hose connection 21 and through the float 11 into the heating pipes 14 and back in the circuit.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)

Abstract

Device for pickling rolled material comprises: a treatment channel (2) formed on the surface (2a) using floats (11) facing the strand; and heat exchangers (12) whose heat energy is transferred to the treatment liquid (5) and/or to the strand. Preferred Features: The heat exchangers have baffle plates (13) for mixing the treatment liquid flow (5a). The baffle plates are between two heat exchangers, laterally from one heat exchanger and/or from one or a pair of heat exchangers. The heat exchangers each consist of heating tubes (14) or plates placed on the lower side of the floats.

Description

Die Erfindung betrifft eine Vorrichtung zur Behandlung von metallischem Stranggut, insbesondere zum Beizen von Walzband, das durch einen Behandlungskanal transportierbar und mit Behandlungsflüssigkeit aus Düsen turbulent bestrahlbar ist, wobei die Flüssigkeitsstrahlen am Kanaleingang in Strangtransportrichtung eingestellt sind und am Kanalausgang entgegengesetzt zur Strangtransportrichtung gerichtet sind, um ein schnelles Abfließen der Behandlungsflüssigkeit zu hemmen.The invention relates to a device for the treatment of metallic strand material, in particular for pickling rolled strip, which is transportable through a treatment channel and turbulently irradiated with treatment liquid from nozzles, wherein the liquid jets are set at the channel entrance in strand transport direction and are directed at the channel exit opposite to the strand transport direction to to inhibit rapid drainage of the treatment liquid.

Eine derartige Vorrichtung ist aus der DE-OS 29 11 701 bekannt. Diese Bauweise strebt an, die Schwierigkeiten beim Einsatz von Quetschrollen und damit eine Übertragung von Behandlungsflüssigkeit zwischen einzelnen Tanks zu vermeiden. Dabei sollen Stütz- oder Führungswalzen durch andere Elemente ersetzt werden. Zum einen geht diese Bauweise von länglich rechteckigen Behandlungskammern aus und zum anderen sind parallel und senkrecht zur Strangtransportrichtung Behandlungsdüsen angeordnet. Zusätzlich zu den Behandlungsdüsen sind sog. Deflektoren über und unter dem Stranggut angeordnet, die eine bessere Besprühung des Stranggutes bewirken sollen. Die aufgezeigten Maßnahmen richten sich jedoch ausschließlich auf eine weitere Verwirbelung und Steigerung der Turbulenz und stellen rein mechanische Vorgehensweisen dar. Eine weitergehende chemische Wirkung ist weder vorgesehen noch beabsichtigt.Such a device is known from DE-OS 29 11 701 known. This design aims to avoid the difficulties in the use of pinch rollers and thus a transfer of treatment liquid between individual tanks. Supporting or guiding rollers should be replaced by other elements. On the one hand, this design is based on oblong rectangular treatment chambers and, on the other hand, treatment nozzles are arranged parallel and perpendicular to the strand transport direction. In addition to the treatment nozzles, so-called deflectors are arranged above and below the extruded material, which are intended to effect a better spraying of the extruded material. However, the measures described are directed exclusively to further turbulence and increase in turbulence and are purely mechanical approaches dar. Further chemical action is neither intended nor intended.

Die EP 0 058 216 A1 beschreibt eine Vorrichtung zur chemischen oder elektrochemischen Oberflächenbehandlung von Behandlungsgut in einem erwärmten flüssigem Behandlungsmedium, bestehend aus einem mit einem Deckel versehenen Flüssigkeitsbehälter, insbesondere Bandbeizanlage, bei der die Bandoberfläche zur Verringerung der Verdampfungsoberfläche teilweise abdeckbar ist. Grundlage dieser Erfindung ist es, die Abdeckung der Verdampfungsoberfläche des Bades so zu optimieren, dass der Verdunstungsanteil soweit wie möglich reduziert wird. Durch einen Verdrängungskörper der in das Flüssigkeitsbad eingetaucht wird, soll der weitaus größte Anteil der Verdampfungsverluste eingespart werden. Zusätzlich wird die abzusaugende Gasmenge reduziert.The EP 0 058 216 A1 describes a device for the chemical or electrochemical surface treatment of material to be treated in a heated liquid treatment medium consisting of a lidded liquid container, in particular Bandbeizanlage, in which the strip surface is partially covered to reduce the evaporation surface. The basis of this invention is to optimize the coverage of the evaporation surface of the bath so that the evaporation rate is reduced as much as possible. By a displacement body is immersed in the liquid bath, the vast majority of the evaporation losses should be saved. In addition, the amount of gas to be sucked off is reduced.

Die EP 0 795 629 A1 betrifft eine Vorrichtung zum Oberflächenbehandeln von Bädern mit Flüssigkeiten, insbesondere zum Beizen gewalzter Metallbänder in einem rinnenförmigen, insbesondere durch einen Deckel abgeschlossenen Behälter. Durch eine oberhalb des Bandes in die Flüssigkeit eingetauchte Platte soll im Behandlungsbehälter ein verbesserter Rückfluss der aufgestauten Behandlungsflüssigkeit vom Bereich des Bandauslaufes zum Bandeinlauf hin gewährleistet werden, so dass die Stauhöhe im Bereich des Bandauslaufes verringert wird. Außerdem soll durch die erfindungsgemäße Platte ein Behandlungskanal mit geringer Badtiefe gebildet werden, wobei gleichzeitig die freie Oberfläche des Behandlungsmediums erhalten bleibt. Dies sorgt für eine gezielte Umwälzung und Durchmischung des Behandlungsmediums im Behandlungsbehälter.The EP 0 795 629 A1 relates to a device for surface treatment of baths with liquids, in particular for pickling rolled metal strips in a trough-shaped, in particular closed by a lid container. By means of a plate immersed in the liquid above the strip, an improved reflux of the accumulated treatment liquid from the region of the strip outlet to the strip inlet is to be ensured in the treatment tank, so that the accumulation height in the region of the strip outlet is reduced. In addition to be formed by the plate according to the invention, a treatment channel with a low bath depth, while maintaining the free surface of the treatment medium. This ensures a targeted circulation and mixing of the treatment medium in the treatment tank.

Der Erfindung liegt die Aufgabe zugrunde, neben den physikalischen Wirkungen der Turbulenz die chemischen Wirkungen der Behandlungsflüssigkeit und ggf. sogar schon den Oberflächenzustand des Stranggutes zu verbessern im Sinn einer Durchsatzerhöhung und der Ausdehnung der Behandlung auf kritische Stahlsorten.The invention is based on the object, in addition to the physical effects of turbulence, to improve the chemical effects of the treatment liquid and possibly even the surface state of the material in the interest of increasing throughput and extending the treatment to critical steel grades.

Die gestellte Aufgabe wird erfindungsgemäß dadurch gelöst, dass der Behandlungskanal an der Oberseite mittels aneinandergereihten Schwimmkörpern gebildet ist, die dem Stranggut zugewandt, jeweils mit einzelnen oder mehreren, flächenverteilten Wärmetauschern versehen sind, deren Wärmeenergie auf die Behandlungsflüssigkeit und / oder das Stranggut übertragbar ist. Ein zusätzlicher thermischer Eintrag erhöht die chemischen Wirkungen, indem die Behandlungsflüssigkeit schneller auf die gewünschte Reaktionstemperatur gebracht wird und damit früher und intensiver reagiert. Die Erfindung ist deshalb vorteilhaft u.a. auch auf Stranggut 1 aus IF-Stählen anwendbar (IF = Interstitial Free Steel).The stated object is achieved in that the treatment channel is formed at the top by means of juxtaposed floats facing the strand, are each provided with individual or more, area-distributed heat exchangers whose heat energy is transferable to the treatment liquid and / or the stock. An additional thermal input increases the chemical effects by bringing the treatment liquid more quickly to the desired reaction temperature and thus reacting earlier and more intensively. The invention is therefore advantageous i.a. Also applicable to stock 1 of IF steels (IF = Interstitial Free Steel).

Eine weitere Verbesserung des Wirkungsgrades solcher Vorrichtungen wird in Kombination mit chemischen Reaktionen dadurch erzielt, dass den flächenverteilten Wärmetauschern Strömungsleitbleche zugeordnet sind, die nach unten vorstehend zur Vermischung der Behandlungsflüssigkeits-Strömung dienen.A further improvement in the efficiency of such devices is achieved in combination with chemical reactions in that the area-distributed heat exchangers are assigned flow baffles, which serve downwards above for mixing the treatment liquid flow.

Vorteilhafterweise sind die Strömungsleitbleche zwischen zwei Wärmetauschern, seitlich von einem Wärmetauscher und / oder vor einem oder vor einem Paar von Wärmetauschern angeordnet. Dadurch wird eine besonders intensive Durchwirbelung der Behandlungsflüssigkeit erzielt.Advantageously, the flow baffles are arranged between two heat exchangers, laterally from a heat exchanger and / or in front of or in front of a pair of heat exchangers. As a result, a particularly intensive turbulence of the treatment liquid is achieved.

Die Übertragung der Wärmeenergie auf das Stranggut und / oder die Behandlungsflüssigkeit erfolgt besonders intensiv, indem die Wärmetauscher jeweils aus an der Unterseite der Schwimmkörper verlegten Heizrohren oder Heizplatten bestehen.The transfer of heat energy to the strand material and / or the treatment liquid takes place particularly intensively, in that the heat exchangers each consist of heating pipes or heating plates laid on the underside of the floating body.

Weitere Merkmale ergeben sich dadurch, dass die Heizrohre schlangenförmig zu Heizwaben verlegt sind. Damit ist eine hohe Flächenausnutzung und eine hohe Wärmebelegung der zur Verfügung stehenden Grundfläche verbunden.Further features result from the fact that the heating pipes are laid serpentine to Heizwaben. This is associated with a high space utilization and a high heat dissipation of the available base area.

Eine weitere Ausgestaltung sieht vor, dass die Heizrohre aus PVDF oder aus PTFE hergestellt und mit Wasserdampf von ca. 130 - 135 °C betrieben sind. Diese Ausbildung sichert eine gute Wärmebelastbarkeit bei relativ hohen Temperaturen.A further embodiment provides that the heating tubes are made of PVDF or PTFE and operated with water vapor of about 130 - 135 ° C. This training ensures a good heat load capacity at relatively high temperatures.

Für die Gestaltung und Handhabung der Wärmetauscher ist es weiter vorteilhaft, dass die Schwimmkörper mit den Wärmetauschern jeweils mit Abstand zu einem umgebenden, dem Schwimmkörper zugewandt offenen Deckelgehäuse befestigt sind.For the design and handling of the heat exchanger, it is also advantageous that the floats are attached to the heat exchangers each with distance to a surrounding, the float facing open lid housing.

Dazu ist vorgesehen, dass das Deckelgehäuse mittels mehreren Abstandshaltern mit dem Schwimmkörper verbunden ist.For this purpose, it is provided that the cover housing is connected by means of a plurality of spacers with the float.

Die Handhabung des Schwimmkörpers, des Wärmetauschers und des Deckelgehäuses wird ferner dadurch erleichtert, dass das Deckelgehäuse zusammen mit dem Schwimmkörper mittels eines Hebegeschirrs oder einer Hydraulikeinrichtung heraushebbar oder auf die Behandlungskammer aufsetzbar ist. Dadurch kann der Wärmetauscher außerhalb der Vorrichtung leicht und schnell ausgetauscht oder repariert werden.The handling of the float, the heat exchanger and the cover housing is further facilitated by the fact that the cover housing can be lifted together with the float by means of a lifting harness or a hydraulic device or placed on the treatment chamber. This allows the heat exchanger outside the device to be easily and quickly replaced or repaired.

Schließlich ist vorgesehen, dass der Schwimmkörper aus Kunststoff hergestellt ist, wodurch eine erheblich leichte Bauweise geschaffen werden kann.Finally, it is provided that the floating body is made of plastic, whereby a considerably lightweight construction can be created.

In der Zeichnung ist ein Ausführungsbeispiel der Erfindung dargestellt, das nachfolgend näher erläutert wird.In the drawing, an embodiment of the invention is shown, which will be explained in more detail below.

Es zeigen:

Fig. 1
einen senkrechten Längsschnitt durch mehrere aneinandergereihte Behandlungskammern und
Fig. 2
eine perspektivische Ansicht von unten gegen den Schwimmkörper mit Wärmetauscher und Deckelgehäuse.
Show it:
Fig. 1
a vertical longitudinal section through several juxtaposed treatment chambers and
Fig. 2
a perspective view from below against the float with heat exchanger and cover housing.

Die Vorrichtung zur Behandlung von metallischem Stranggut 1, insbesondere von Walzband 1a, das durch einen Behandlungskanal 2 transportiert wird, weist hintereinander liegend eine erste Behandlungskammer 3 und eine zweite Behandlungskammer 4 auf. Das Stranggut 1 wird mit Behandlungsflüssigkeit 5 aus Düsen 6 mit Flüssigkeitsstrahlen 7 derart bestrahlt, dass eine turbulente Behandlungsflüssigkeits-Strömung 5a besteht. Die Flüssigkeitsstrahlen 7 sind am Kanaleingang 8 in Strangtransportrichtung 9 eingestellt und am Kanalausgang 10 zur Strangtransportrichtung 9 entgegengesetzt, so dass ein schnelles Abfließen der Behandlungsflüssigkeit 5 aus der jeweiligen Behandlungskammer 3 und 4 zumindest gehemmt wird. Das Stranggut 1 liegt innerhalb der Behandlungskammern 3, 4 auf Gleitsteinen 3a und 4a auf.The device for the treatment of metallic strand 1, in particular of rolled strip 1 a, which is transported through a treatment channel 2, has a first treatment chamber 3 and a second treatment chamber 4 lying one behind the other. The stock 1 is irradiated with treatment liquid 5 from nozzles 6 with liquid jets 7 in such a way that a turbulent treatment liquid flow 5a exists. The liquid jets 7 are set at the channel entrance 8 in the strand transport direction 9 and opposite to the channel exit 10 to the strand transport direction 9, so that a rapid outflow of the treatment liquid 5 from the respective treatment chamber 3 and 4 is at least inhibited. The strand 1 lies within the treatment chambers 3, 4 on sliding blocks 3a and 4a.

Der Behandlungskanal 2 ist an seiner Oberseite 2a mittels aneinandergereihten Schwimmkörpern 11 gebildet, die dem Stranggut 1 zugewandt, jeweils mit einzelnen oder mehreren, flächenverteilten Wärmetauschern 12 bestückt sind, deren Wärmeenergie auf die Behandlungsflüssigkeit 5 und / oder das Stranggut 1 übertragen wird. Die mit der angestrebten Eintrittstemperatur eintretende Behandlungsflüssigkeit 5 intensiviert die chemische Reaktion zwischen der Oberfläche des Strangguts 1, insbesondere von Walzband 1a, und führt zu intensiveren Reinigungsvorgängen und damit zu einer Optimierung des Prozesses und zu einer größeren Durchsatzleistung.The treatment channel 2 is formed on its upper side 2a by means of juxtaposed floats 11, which are facing the material 1, each equipped with individual or multiple, area-distributed heat exchangers 12 whose heat energy is transferred to the treatment liquid 5 and / or the extruded material 1. The entering with the desired inlet temperature treatment liquid 5 intensifies the chemical reaction between the surface of the strand 1, in particular of rolled strip 1 a, and leads to more intensive cleaning operations and thus to an optimization of the process and a higher throughput.

Die Turbulenz trägt zu diesen Vorgängen ebenfalls bei, so dass in Kombination mit der erwärmt eingebrachten Behandlungsflüssigkeit 5 eine deutliche Verbesserung des Prozesses stattfindet. Für diesen Effekt sorgen flächenverteilte Strömungsleitbleche 13, die den flächenverteilten Wärmetauschern 12 zugeordnet sind, nach unten vorstehen und die Vermischung der Behandlungsflüssigkeits-Strömung 5a erheblich verstärken.The turbulence also contributes to these processes, so that a significant improvement of the process takes place in combination with the heated treatment liquid 5 introduced. For this effect, surface-distributed flow baffles 13, which are assigned to the area-distributed heat exchangers 12, project downwards and considerably increase the mixing of the treatment liquid flow 5a.

Wie aus Fig. 2 weiter ersichtlich ist, sind die Strömungsleitbleche 13 zwischen zwei Wärmetauschern 12, seitlich von einem Wärmetauscher 12 und / oder vor einem oder vor einem Paar von Wärmetauschern 12 in Strangtransportrichtung 9 angeordnet.How out Fig. 2 It can also be seen that the flow guide plates 13 are arranged between two heat exchangers 12, laterally from a heat exchanger 12 and / or in front of or in front of a pair of heat exchangers 12 in the strand transport direction 9.

In einer speziellen Ausführungsform bestehen die Wärmetauscher 12 jeweils aus an der Unterseite 11a der Schwimmkörper 11 verlegten Heizrohren 14 oder Heizplatten. Die Heizrohre 14 sind schlangenförmig zu Heizwaben 15 verlegt und befinden sich in geschlossenen Ausschnitten 11b der Schwimmkörper 11. Die Heizrohre sind aus PVDF (Polyvinyli-denfluorid ) oder PTFE (Polytetrafluorethylen) hergestellt und führen Dampf von ca. 130 - 135 °C.In a special embodiment, the heat exchangers 12 each consist of heating pipes 14 or heating plates laid on the underside 11a of the floating bodies 11. The heating tubes 14 are laid serpentine to Heizwaben 15 and are located in closed sections 11b of the float 11. The heating tubes are made of PVDF (polyvinylidene fluoride) or PTFE (polytetrafluoroethylene) and carry steam of about 130-135 ° C.

Die Schwimmkörper 11 sind mit den Wärmetauschern 12 jeweils mit einem Abstand 16 zu einem umgebenden, dem Schwimmkörper 11 zugewandt offenen Deckelgehäuse 17 verbunden. Der Abstand 16 wird mittels mehreren Abstandshaltern 18 zwischen dem Schwimmkörper 11 und dem Deckelgehäuse 17 bestimmt. Das Deckelgehäuse 17 ist als Einheit zusammen mit dem Schwimmkörper 11 und den Wärmetauschern 12 mittels eines Hebegeschirrs 19 oder mittels einer Hydraulikeinrichtung heraushebbar oder auf die Behandlungskammer 3 bzw. 4 wieder aufsetzbar. Der Schwimmkörper 11 kann aus Kunststoff hergestellt sein, um ein nur geringes Gewicht einzunehmen und etwaigen störenden Dämpfen aus der Behandlungsflüssigkeit 5 zu widerstehen und diese aufzufangen.The floats 11 are connected to the heat exchangers 12 each with a distance 16 to a surrounding, the floating body 11 facing open lid housing 17. The distance 16 is determined by means of a plurality of spacers 18 between the float 11 and the cover housing 17. The cover housing 17 can be lifted out as a unit together with the floating body 11 and the heat exchangers 12 by means of a lifting harness 19 or by means of a hydraulic device or can be placed on the treatment chamber 3 or 4 again. The floating body 11 may be made of plastic to take only a light weight and any disturbing vapors from the treatment liquid 5 to resist and catch them.

Der heiße Dampf wird in Richtung 20 durch einen Schlauchanschluss 21 und durch den Schwimmkörper 11 in die Heizrohre 14 und zurück im Kreislauf geführt.The hot steam is fed in direction 20 through a hose connection 21 and through the float 11 into the heating pipes 14 and back in the circuit.

Bezugszeichenliste:LIST OF REFERENCE NUMBERS

11
Stranggutcontinuous material
1a1a
Walzbandrolled strip
22
Behandlungskanaltreatment channel
2a2a
Oberseitetop
33
erste Behandlungskammerfirst treatment chamber
3a3a
Gleitsteinslide
44
zweite Behandlungskammersecond treatment chamber
4a4a
Gleitsteinslide
55
Behandlungsflüssigkeittreatment liquid
5a5a
Behandlungsflüssigkeits-StrömungTreatment liquid flow
66
Düsenjet
77
Flüssigkeitsstrahlliquid jet
88th
Kanaleingangchannel input
99
StrangtransportrichtungStrand transport direction
1010
Kanalausgangchannel output
1111
Schwimmkörperfloat
11a11a
Unterseitebottom
11b11b
Ausschnittneckline
1212
Wärmetauscherheat exchangers
1313
Strömungsleitblecheflow baffles
1414
Heizrohreheating pipes
1515
HeizwabeHeizwabe
1616
Abstanddistance
1717
Deckelgehäusecover housing
1818
Abstandshalterspacer
1919
Hebegeschirrspreader
2020
Richtungdirection
2121
Schlauchanschlusshose connection

Claims (10)

  1. Device for treating metallic strip material (1), particularly for pickling rolled strip, with a treatment channel (2) through which the strip material (1) is transportable, and with nozzles (6) by which it can be turbulently irradiated with treatment liquid (5), wherein the liquid jets (7) at the channel inlet (8) are set in strip material transport direction and at the channel outlet (10) are oriented oppositely to the strip transport direction in order to inhibit rapid outflow of the treatment liquid, characterised in that the treatment channel (2) is formed at the upper side (2a) by means of float bodies (11), which are arranged in a row and face the strip material (1) and which are each provided with individual or multiple heat exchangers (12), which are distributed over an area and the heat energy of which is transmissible to the treatment liquid (5) and/or the strip material (1).
  2. Device according to claim 1, characterised in that associated with the heat exchangers (12) distributed over an area are flow guide plates (13) which protrude downwardly to serve for mixing the treatment liquid flow (5a).
  3. Device according to one of claims 1 and 2, characterised in that the flow guide plates (13) are arranged between two heat exchangers (12) laterally of a heat exchanger (12) and/or in front of a heat exchanger or in front of a pair of heat exchangers (12).
  4. Device according to any one of claims 1 to 3, characterised in that the heat exchangers (12) each consist of heating tubes (14) or heating plates placed at the underside (11 a) of the float bodies (11).
  5. Device according to any one of claims 1 to 4, characterised in that the heating tubes (14) are laid in serpentine form to form heating honeycombs (15).
  6. Device according to any one of claims 1 to 5, characterised in that the heating tubes (14) are made of PVDF (polyvinylidenefluoride) or PTFE (polytetrafluoroethylene) and are operable with water steam of approximately 130 - 135° C.
  7. Device according to any one of claims 1 to 6, characterised in that the float bodies (11) together with the heat exchangers (12) are each fastened at a spacing (16) from a surrounding cover housing (17) open towards the float body (11).
  8. Device according to claim 6, characterised in that the cover housing (17) is connected with the float body (11) by means of a plurality of spacers (18).
  9. Device according to any one of claims 1 to 8, characterised in that the cover housing (17) together with the float body (11) is withdrawable from or placeable on the treatment chamber (3; 4) by means of lifting equipment (19) or by means of a hydraulic device.
  10. Device according to any one of claims 1 to 9, characterised in that the float body (11) is made of plastics material.
EP01113485A 2000-06-23 2001-06-02 Apparatus for treating elongated metallic work pieces, in particular for pickling rolled strip Expired - Lifetime EP1167578B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10030853 2000-06-23
DE10030853A DE10030853A1 (en) 2000-06-23 2000-06-23 Device for the treatment of metallic extrudates, in particular for pickling rolled strip

Publications (2)

Publication Number Publication Date
EP1167578A1 EP1167578A1 (en) 2002-01-02
EP1167578B1 true EP1167578B1 (en) 2010-06-02

Family

ID=7646686

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01113485A Expired - Lifetime EP1167578B1 (en) 2000-06-23 2001-06-02 Apparatus for treating elongated metallic work pieces, in particular for pickling rolled strip

Country Status (4)

Country Link
EP (1) EP1167578B1 (en)
JP (1) JP2002053988A (en)
AT (1) ATE469994T1 (en)
DE (2) DE10030853A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006042416B4 (en) * 2006-09-06 2009-04-23 Sms Demag Ag Method for pickling metal strips and apparatus for carrying out the method
JP5679149B2 (en) * 2010-02-05 2015-03-04 日新製鋼株式会社 Pickling operation method of stainless steel strip
CN103757654B (en) * 2013-12-30 2016-01-06 河南星光机械制造有限公司 Efficient barrel plating cleaning system
JP6586392B2 (en) * 2016-04-27 2019-10-02 Ｐｒｉｍｅｔａｌｓ Ｔｅｃｈｎｏｌｏｇｉｅｓ Ｊａｐａｎ株式会社 Pickling equipment

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2234424C3 (en) * 1972-07-13 1980-10-09 Hoechst Ag, 6000 Frankfurt Method and device for one-sided continuous electrolytic roughening and / or oxidation of aluminum strips
GB2031036B (en) * 1978-10-10 1982-11-03 Midland Ross Corp Liquid trestment of metal strip
ATE15236T1 (en) * 1981-02-18 1985-09-15 Mannesmann Ag DEVICE FOR CHEMICAL OR ELECTROCHEMICAL SURFACE TREATMENT OF PRODUCTS TO BE TREATED IN A HEATED LIQUID TREATMENT MEDIUM, PARTICULARLY STRIP SEALING PLANT.
US5248372A (en) * 1992-09-08 1993-09-28 Production Machinery Corporation Apparatus for pickling a metal sheet material
FR2701409B1 (en) * 1993-02-12 1995-05-05 Clecim Sa Installation for processing metal strips.
AT403699B (en) * 1996-03-14 1998-04-27 Andritz Patentverwaltung DEVICE FOR TREATING TREATMENTS WITH LIQUIDS
DE69901764T2 (en) * 1998-03-11 2003-02-06 Mitsubishi Heavy Ind Ltd pickling

Also Published As

Publication number Publication date
DE10030853A1 (en) 2002-01-03
DE50115498D1 (en) 2010-07-15
EP1167578A1 (en) 2002-01-02
ATE469994T1 (en) 2010-06-15
JP2002053988A (en) 2002-02-19

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