EP1046436A2 - Cooling method and cooling bed for rolled products - Google Patents
Cooling method and cooling bed for rolled products Download PDFInfo
- Publication number
- EP1046436A2 EP1046436A2 EP00107140A EP00107140A EP1046436A2 EP 1046436 A2 EP1046436 A2 EP 1046436A2 EP 00107140 A EP00107140 A EP 00107140A EP 00107140 A EP00107140 A EP 00107140A EP 1046436 A2 EP1046436 A2 EP 1046436A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- rolling stock
- cooling
- water
- longitudinal axis
- cooling bed
- 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.)
- Granted
Links
- 238000001816 cooling Methods 0.000 title claims abstract description 77
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 49
- 239000007921 spray Substances 0.000 claims abstract description 23
- 239000003595 mist Substances 0.000 claims abstract description 4
- 238000005096 rolling process Methods 0.000 claims description 89
- 229910000831 Steel Inorganic materials 0.000 claims description 7
- 239000010959 steel Substances 0.000 claims description 7
- 238000005507 spraying Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 8
- 238000007605 air drying Methods 0.000 abstract 2
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000009692 water atomization 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
- B21B43/00—Cooling beds, whether stationary or moving; Means specially associated with cooling beds, e.g. for braking work or for transferring it to or from the bed
- B21B43/02—Cooling beds comprising rakes racks, walking beams or bars
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B43/00—Cooling beds, whether stationary or moving; Means specially associated with cooling beds, e.g. for braking work or for transferring it to or from the bed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B43/00—Cooling beds, whether stationary or moving; Means specially associated with cooling beds, e.g. for braking work or for transferring it to or from the bed
- B21B43/08—Cooling beds comprising revolving drums or recycling chains or discs
Definitions
- the present invention relates to a cooling method for Rolling stock in a cooling bed, the rolling stock being a longitudinal axis of the rolling stock has and during cooling transverse to the longitudinal axis of the rolling stock is transported, for cooling the rolling stock Water is applied to the rolling stock with a working pressure is, as well as a corresponding cooling bed.
- Such a cooling process and the corresponding cooling bed are z. B. from DE-OS 1 602 169 known.
- Air cooling is relatively ineffective and requires relative large width of the cooling bed. It is also expensive. Furthermore, in order to ensure uniform cooling, the rolling stock transversely to the longitudinal axis of the rolling stock can be rotated around its longitudinal axis, sometimes even parked vertically and later put down again.
- Water cooling usually results in water from spray nozzles sprayed onto the rolling stock from below and / or above. This However, the method can only be used in the rear part of the cooling bed because there is no rough water cooling Product damage. Beyond that, it still has to wet rolling stock before entering a cooling bed downstream Straightener to be dried.
- the object of the present invention is a Cooling process with water cooling and a corresponding one To create a cooling bed that maintains product quality remains and the width of the cooling bed is kept small can be.
- the object is achieved for the cooling process in that the rolling stock is only air-cooled in an initial section, then in a middle section with a middle section width by spraying a quantity of water onto the rolling stock spray cooled and finally in an end section is air dried and air cooled.
- the cooling bed transverse to the longitudinal axis of the rolling stock in an initial section, a middle section divided with a middle section width and an end section, the initial section of the rolling stock first and the end section of the rolling stock is passed through last, the water distribution device being arranged in the central section and wherein the water distribution device as Spray device designed to generate a spray is.
- Spray mist means that the water does not strike the rolling stock as a jet, but that a mist-like fine spray is carried out.
- the fine spray can be achieved by means of appropriate spray nozzles with or without compressed air.
- the cooling intensity adjustable is adjustable.
- the cooling method according to the invention Because of the cooling method according to the invention, a gentle cooling of the rolling stock. There is also a temperature compensation within the rolling stock, especially between the cooled underside of the rolling stock and the upper area of the rolling stock. Cooling can also be in a higher temperature range than with splash water cooling.
- the Residual heat of the rolling stock can be used to dry the rolling stock in the End section can be used. It is no longer necessary the rolling stock transversely to the longitudinal axis of the rolling stock to rotate or set up its rolling longitudinal axis.
- the cooling process works particularly well reliable.
- the cooling bed is then also robustly designed and has a long service life. It but are also other configurations of the transport device, e.g. B. as a lifting rake or as a transport chain.
- the cooling process is for different rolling stock dimensions applicable.
- the rolling stock is preferably of medium weight or a heavy steel profile.
- a cooling bed has an infeed roller table 1.
- a rolling stock 2 with a rolling stock longitudinal axis is located above the infeed roller table 1 3 retractable into the cooling bed.
- the rolling stock 2 is taken over by a transport device 4 and thus conveyed transversely to the longitudinal axis 3 of the rolling stock to an outlet roller table 5.
- the outlet roller table 5 then conveys the rolling stock 2 the cooling bed.
- the transport device 4 is as continuous walking beam 4 formed.
- the walking beam 4 could but can also be divided into several walking beam sections.
- the rolling stock 2 by means of another transport device 4 to cross-feed as a walking beam 4.
- the transport device 4 could be as a lifting rake or chain.
- a cross conveyor only by walking beams is preferable.
- the rolling stock 2 first passes through during the transverse conveying an initial section 6, then a middle section 7 and finally an end section 9 of the cooling bed.
- the rolling stock 2 In the initial section 6, the rolling stock 2 is still very hot. It is only air-cooled there. Due to the high temperature of the Rolling stock 2, this type of cooling is also effective.
- the middle section 7 there is a water distribution device 9 arranged, by means of which a quantity of water M with a working pressure is applied to the rolling stock 2.
- the water distribution device 9 is a spray device 9 for generating a spray formed.
- the rolling stock 2 is thus in Middle section 7 by spraying a quantity of water M spray-cooled.
- the rolling stock 2 is in a temperature range which is harmless to the material structure, increasingly cooled.
- the rolling stock 2 is again only air-cooled. Because of its residual heat, it also becomes air dried. Furthermore, temperature compensation takes place within of the rolling stock 2 instead. The temperature compensation is special advantageous for later straightening of the rolling stock 2.
- the water distribution device 9 has several - According to embodiment three - rows 10 of spray nozzles 11 on.
- the rows 10 are via gate valves 12 (individually) can be switched on or off.
- the gate valve 12 thus form a width adjustment device 12, by means of which the effective width of the central section 7 is adjustable. Because of the connectivity of the individual rows 10 is guaranteed, that - within the design limits of the cooling bed - also the largest possible rolling stock 2 at a target temperature from Z. B. 100 ° C can be cooled. If necessary, the effective Length of the rows 10 by arranged within the rows 10 further gate valves can be varied.
- the others Gate valves are shown in Figure 1 for clarity not shown.
- the water distribution device 9 is operated via a pump 13 fed from a tank 14. Between the pump 13 and the Tank 14 is a flow meter 15, the output signal a controller 16 is supplied. The controller 16 then controls the pump 13 so that one of the flow meter 15 detected actual water quantity M to be supplied Amount of water M * is set.
- the pump 13, the flow meter 15 and the controller 16 thus form a water quantity setting device 13, 15, 16, by means of which the amount of water M is adjustable.
- the Working pressure can be detected with which the pump 13, the actual amount of water M promotes. In this case, instead of the amount of water M or M * regulated the working pressure.
- the spray nozzles 11 of the water distribution device 9 arranged exclusively below the rolling stock 2.
- the amount of water M is therefore only from below on the Rolled stock 2 sprayed.
- the rolling stock 2 Due to the mild cooling from below with flowing heat from the rolling stock 2 and corresponding temperature compensation the rolling stock 2 can be transported transversely to the longitudinal axis 3 of the rolling stock without having to rotate it about its longitudinal axis 3 of rolling stock.
- Devices for rotating the rolling stock 2 about its longitudinal axis 3 therefore omitted.
- the cooling bed can cross to the longitudinal axis 3 of the rolling stock are built considerably smaller than with pure air cooling. Because of the cooling by the finest The water droplets are cooled very evenly Rolled stock 2, which does not affect the quality of the rolled stock 2 and also leads to the fact that the rolling stock 2 is not warps.
- Water droplets of suitable droplet size can are generated, for example, by the spray nozzles 11 are designed as so-called hollow cone nozzles or compressed air is used for water atomization.
- the cooling method according to the invention and the corresponding one Cooling beds are 2 of the most varied of rolled goods Dimensions can be used. However, it is particularly advantageous if the rolling stock 2 is of medium or heavy weight Steel profile, so the cooling bed is designed accordingly is.
- a medium-heavy steel profile understood a steel profile with an edge length a, which - depending by definition - 60, 70, 80, 90 or 100 mm. From one Edge length a of 400, 450, 500, 550 or 600 mm - again depending on the definition - one speaks of a heavy steel profile.
- the profile is arbitrary. T-, I- and Called double T, U, X and rail profiles.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Heat Treatments In General, Especially Conveying And Cooling (AREA)
- Metal Rolling (AREA)
- Control Of Heat Treatment Processes (AREA)
Abstract
Description
Die vorliegende Erfindung betrifft ein Kühlverfahren für Walzgut in einem Kühlbett, wobei das Walzgut eine Walzgutlängsachse aufweist und während des Kühlens quer zur Walzgutlängsachse transportiert wird, wobei zum Kühlen des Walzguts Wasser mit einem Arbeitsdruck auf das Walzgut aufgebracht wird, sowie ein hiermit korrespondierendes Kühlbett.The present invention relates to a cooling method for Rolling stock in a cooling bed, the rolling stock being a longitudinal axis of the rolling stock has and during cooling transverse to the longitudinal axis of the rolling stock is transported, for cooling the rolling stock Water is applied to the rolling stock with a working pressure is, as well as a corresponding cooling bed.
Ein derartiges Kühlverfahren und das korrespondierende Kühlbett sind z. B. aus der DE-OS 1 602 169 bekannt.Such a cooling process and the corresponding cooling bed are z. B. from DE-OS 1 602 169 known.
Zum Kühlen von Walzgut in einem Kühlbett werden im wesentlichen zwei Verfahren angewendet, nämlich entweder die reine Luftkühlung oder die Wasserkühlung.For cooling rolling stock in a cooling bed are essentially two methods are used, namely either the pure one Air cooling or water cooling.
Die Luftkühlung ist relativ ineffektiv und erfordert eine relativ große Baubreite des Kühlbetts. Sie ist auch aufwendig. Ferner muß, um eine gleichmäßige Kühlung zu gewährleisten, das Walzgut während des Transports quer zur Walzgutlängsachse um seine Walzgutlängsachse gedreht werden, teilweise sogar senkrecht stehend abgestellt und später wieder abgelegt werden.Air cooling is relatively ineffective and requires relative large width of the cooling bed. It is also expensive. Furthermore, in order to ensure uniform cooling, the rolling stock transversely to the longitudinal axis of the rolling stock can be rotated around its longitudinal axis, sometimes even parked vertically and later put down again.
Bei der Wasserkühlung wird im Regelfall Wasser aus Spritzdüsen von unten und/oder oben auf das Walzgut gespritzt. Dieses Verfahren kann aber nur im hinteren Teil des Kühlbetts eingesetzt werden, weil nur dort die grobe Wasserkühlung keine Produktschädigung hervorruft. Darüber hinaus muß das noch nasse Walzgut vor dem Einlaufen in eine dem Kühlbett nachgeordnete Richtmaschine getrocknet werden.Water cooling usually results in water from spray nozzles sprayed onto the rolling stock from below and / or above. This However, the method can only be used in the rear part of the cooling bed because there is no rough water cooling Product damage. Beyond that, it still has to wet rolling stock before entering a cooling bed downstream Straightener to be dried.
Die Aufgabe der vorliegenden Erfindung besteht darin, ein Kühlverfahren mit Wasserkühlung und ein hiermit korrespondierendes Kühlbett zu schaffen, bei dem die Produktqualität erhalten bleibt und die Baubreite des Kühlbetts klein gehalten werden kann.The object of the present invention is a Cooling process with water cooling and a corresponding one To create a cooling bed that maintains product quality remains and the width of the cooling bed is kept small can be.
Die Aufgabe wird für das Kühlverfahren dadurch gelöst, daß das Walzgut in einem Anfangsabschnitt nur luftgekühlt wird, sodann in einem Mittelabschnitt mit einer Mittelabschnittbreite durch Versprühen einer Wassermenge auf das Walzgut sprühnebelgekühlt wird und schließlich in einem Endabschnitt luftgetrocknet und luftgekühlt wird.The object is achieved for the cooling process in that the rolling stock is only air-cooled in an initial section, then in a middle section with a middle section width by spraying a quantity of water onto the rolling stock spray cooled and finally in an end section is air dried and air cooled.
Hiermit korrespondierend ist das Kühlbett quer zur Walzgutlängsachse in einen Anfangsabschnitt, einen Mittelabschnitt mit einer Mittelabschnittbreite und einen Endabschnitt unterteilt, wobei der Anfangsabschnitt von dem Walzgut zuerst und der Endabschnitt von dem Walzgut zuletzt durchlaufen wird, wobei die Wasserverteilungsvorrichtung im Mittelabschnitt angeordnet ist und wobei die Wasserverteilungsvorrichtung als Sprühvorrichtung zum Erzeugen eines Sprühnebels ausgebildet ist.Corresponding to this is the cooling bed transverse to the longitudinal axis of the rolling stock in an initial section, a middle section divided with a middle section width and an end section, the initial section of the rolling stock first and the end section of the rolling stock is passed through last, the water distribution device being arranged in the central section and wherein the water distribution device as Spray device designed to generate a spray is.
Der Begriff
Wenn die Mittelabschnittsbreite und/oder die Wassermenge und/oder der Arbeitsdruck einstellbar ist, ist die Kühlungsintensität einstellbar. If the middle section width and / or the amount of water and / or the working pressure is adjustable, the cooling intensity adjustable.
Wenn die Wassermenge nur von unten auf das Walzgut gesprüht wird, bleibt die freie Zugänglichkeit des Kühlbettes von oben erhalten. Eventuell überschüssige Wassermengen können dabei durch die entstehende Thermik nach oben abgeführt werden.If the amount of water is only sprayed onto the rolling stock from below the cooling bed remains freely accessible from above receive. Any excess amounts of water can can be dissipated upwards by the resulting thermals.
Aufgrund des erfindungsgemäßen Kühlverfahrens ergibt sich eine sanfte Kühlung des Walzguts. Es erfolgt auch ein Temperaturausgleich innerhalb des Walzguts, insbesondere zwischen der gekühlten Unterseite des Walzguts und den oberen Bereich des Walzguts. Auch kann die Kühlung in einem höheren Temperaturbereich als bei einer Spritzwasserkühlung erfolgen. Die Restwärme des Walzguts kann zum Abtrocknen des Walzguts im Endabschnitt genutzt werden. Es ist nicht mehr erforderlich, das Walzgut während des Transports quer zur Walzgutlängsachse um seine Walzgutlängsachse zu drehen bzw. aufzustellen.Because of the cooling method according to the invention, a gentle cooling of the rolling stock. There is also a temperature compensation within the rolling stock, especially between the cooled underside of the rolling stock and the upper area of the rolling stock. Cooling can also be in a higher temperature range than with splash water cooling. The Residual heat of the rolling stock can be used to dry the rolling stock in the End section can be used. It is no longer necessary the rolling stock transversely to the longitudinal axis of the rolling stock to rotate or set up its rolling longitudinal axis.
Wenn das Walzgut mittels eines Hubbalkens quer zur Walzgutlängsachse transportiert wird, arbeitet das Kühlverfahren besonders zuverlässig. Insbesondere ist das Kühlbett dann auch robust ausgebildet und weist eine lange Lebensdauer auf. Es sind aber auch andere Ausgestaltungen der Transportvorrichtung, z. B. als Hubrechen oder als Transportkette, möglich.If the rolling stock is transverse to the longitudinal axis of the rolling stock by means of a walking beam the cooling process works particularly well reliable. In particular, the cooling bed is then also robustly designed and has a long service life. It but are also other configurations of the transport device, e.g. B. as a lifting rake or as a transport chain.
Das Kühlverfahren ist bei verschiedenen Walzgutabmessungen einsetzbar. Vorzugsweise aber ist das Walzgut ein mittelschweres oder ein schweres Stahlprofil.The cooling process is for different rolling stock dimensions applicable. However, the rolling stock is preferably of medium weight or a heavy steel profile.
Weitere Vorteile und Einzelheiten ergeben sich aus der nachfolgenden Beschreibung eines Ausführungsbeispiels in Verbindung mit den Zeichnungen. Dabei zeigen in Prinzipdarstellung
- Figur 1
- ein Kühlbett für Walzgut von oben und
Figur 2- das Kühlbett von Figur 1 im Schnitt längs der Linie II-II in Figur 1.
- Figure 1
- a cooling bed for rolling stock from above and
- Figure 2
- the cooling bed of Figure 1 in section along the line II-II in Figure 1.
Gemäß Figur 1 weist ein Kühlbett einen Einlaufrollgang 1 auf.
Über den Einlaufrollgang 1 ist ein Walzgut 2 mit einer Walzgutlängsachse
3 in das Kühlbett einfahrbar. Das Walzgut 2
wird von einer Transportvorrichtung 4 übernommen und damit
quer zur Walzgutlängsachse 3 zu einen Auslaufrollgang 5 gefördert.
Der Auslaufrollgang 5 fördert das Walzgut 2 dann aus
dem Kühlbett aus.According to FIG. 1, a cooling bed has an infeed roller table 1.
A rolling
Der obenstehend beschriebene prinzipielle Aufbau des Kühlbetts kann selbstverständlich variiert werden. Beispielsweise können anstelle der Rollgänge 1, 5 auch andere Ein- bzw. Ausfördervorrichtungen eingesetzt werden.The basic structure of the cooling bed described above can of course be varied. For example can instead of roller tables 1, 5 also other infeed or outfeed devices be used.
Gemäß Ausführungsbeispiel ist die Transportvorrichtung 4 als
durchgehender Hubbalken 4 ausgebildet. Der Hubbalken 4 könnte
aber auch in mehrere Hubbalkenabschnitte unterteilt sein. Es
ist auch möglich, das Walzgut 2 mittels einer anderen Transportvorrichtung
4 als einem Hubbalken 4 querzufördern. Beispielsweise
könnte die Transportvorrichtung 4 als Hubrechen
oder Kette ausgebildet sein. Auch Mischformen, z. B. Hubbalken
in einem ersten Querförderabschnitt und Transportkette in
einem zweiten Förderabschnitt, sind möglich. Ein Querfördern
ausschließlich durch Hubbalken ist aber vorzuziehen.According to the embodiment, the transport device 4 is as
continuous walking beam 4 formed. The walking beam 4 could
but can also be divided into several walking beam sections. It
is also possible, the rolling
Während des Querförderns durchläuft das Walzgut 2 zunächst
einen Anfangsabschnitt 6, dann einen Mittelabschnitt 7 und
schließlich einen Endabschnitt 9 des Kühlbetts.The rolling
Im Anfangsabschnitt 6 ist das Walzgut 2 noch sehr heiß. Es
wird dort nur luftgekühlt. Aufgrund der hohen Temperatur des
Walzguts 2 ist diese Art der Kühlung auch effektiv.In the
Im Mittelabschnitt 7 ist eine Wasserverteilungsvorrichtung 9
angeordnet, mittels derer eine Wassermenge M mit einem Arbeitsdruck
auf das Walzgut 2 aufgebracht wird. Die Wasserverteilungsvorrichtung
9 ist als Sprühvorrichtung 9 zum Erzeugen
eines Sprühnebels ausgebildet. Das Walzgut 2 wird also im
Mittelabschnitt 7 durch das Versprühen einer Wassermenge M
sprühnebelgekühlt. Somit wird das Walzgut 2 in einem Temperaturbereich,
der materialgefügeunschädlich ist, verstärkt gekühlt.In the
Im Endabschnitt 8 wird das Walzgut 2 wieder nur luftgekühlt.
Dabei wird es aufgrund seiner Restwärme gleichzeitig auch
luftgetrocknet. Ferner findet ein Temperaturausgleich innerhalb
des Walzguts 2 statt. Der Temperaturausgleich ist insbesondere
für ein späteres Richten des Walzguts 2 vorteilhaft.In the
Gemäß Figur 1 weist die Wasserverteilungsvorrichtung 9 mehrere
- gemäß Ausführungsbeispiel drei - Reihen 10 von Sprühdüsen
11 auf. Die Reihen 10 sind über Absperrschieber 12 (einzeln)
zu- bzw. abschaltbar. Die Absperrschieber 12 bilden also
eine Breiteneinstellvorrichtung 12, mittels derer die
wirksame Breite des Mittelabschnitts 7 einstellbar ist. Aufgrund
der Zuschaltbarkeit der einzelnen Reihen 10 ist gewährleistet,
daß - innerhalb der Auslegungsgrenzen des Kühlbetts
- auch das größtmögliche Walzgut 2 auf eine Richttemperatur
von z. B. 100° C abkühlbar ist. Gegebenenfalls kann die wirksame
Länge der Reihen 10 durch innerhalb der Reihen 10 angeordnete
weitere Absperrschieber variiert werden. Die weiteren
Absperrschieber sind in Figur 1 der Übersichtlichkeit halber
nicht dargestellt.According to Figure 1, the
Die Wasserverteilungsvorrichtung 9 wird über eine Pumpe 13
aus einem Tank 14 gespeist. Zwischen der Pumpe 13 und dem
Tank 14 ist ein Durchflußmesser 15 angeordnet, dessen Ausgangssignal
einen Regler 16 zugeführt wird. Der Regler 16
steuert die Pumpe 13 dann derart an, daß eine vom Durchflußmesser
15 erfaßte Ist-Wassermenge M auf eine zuzuführende
Wassermenge M* eingestellt wird. Die Pumpe 13, der Durchflußmesser
15 und der Regler 16 bilden also eine Wassermengeneinsteilvorrichtung
13, 15, 16, mittels derer die Wassermenge M
einstellbar ist. Alternativ oder zusätzlich könnte auch der
Arbeitsdruck erfaßt werden, mit dem die Pumpe 13 die Ist-Wassermenge
M fördert. In diesem Fall würde statt der Wassermenge
M bzw. M* der Arbeitsdruck geregelt.The
Gemäß Figur 2 sind die Sprühdüsen 11 der Wasserverteilungsvorrichtung
9 ausschließlich unterhalb des Walzguts 2 angeordnet.
Die Wassermenge M wird also nur von unten auf das
Walzgut 2 gesprüht. Die Sprühdüsen 11 sind dabei derart ausgebildet,
daß sie die ihnen zugeführte Wassermenge M in feinste
Wassertröpfchen zerstäuben. Die Wassermenge M wird also
nicht auf das Walzgut 2 aufgespritzt, sondern in der Luft auf
das Walzgut 2 zu zerstäubt. Danach zieht es als Wasser-Luft-Gemisch
= Sprühnebel aufgrund der durch die Pfeile in Figur 2
angedeuteten Wärmekonvektion nach oben am Walzgut 2 vorbei.According to Figure 2, the
Aufgrund der milden Kühlung von unten mit nachfließender Wärme
aus dem Walzgut 2 und entsprechendem Temperaturausgleich
kann das Walzgut 2 quer zur Walzgutlängsachse 3 transportiert
werden, ohne es um seine Walzgutlängsachse 3 drehen zu müssen.
Vorrichtungen zum Drehen des Walzguts 2 um seine Walzgutlängsachse
3 (Aufstell- und Niederlegevorrichtungen) können
also entfallen.Due to the mild cooling from below with flowing heat
from the rolling
Aufgrund der Wassertröpfchenkühlung kann das Kühlbett quer
zur Walzgutlängsachse 3 erheblich kleiner gebaut werden als
mit reiner Luftkühlung. Aufgrund der Kühlung durch feinste
Wassertröpfchen erfolgt eine sehr gleichmäßige Kühlung des
Walzguts 2, welche die Qualität des Walzguts 2 nicht beeinträchtigt
und auch dazu führt, daß sich das Walzgut 2 nicht
verzieht. Wassertröpfchen geeigneter Tröpfchengröße können
beispielsweise dadurch erzeugt werden, daß die Sprühdüsen 11
als sogenannte Hohlkegeldüsen ausgebildet sind oder Druckluft
zur Wasserzerstäubung eingesetzt wird.Due to the water droplet cooling, the cooling bed can cross
to the
Das erfindungsgemäße Kühlverfahren und das hiermit korrespondierende
Kühlbett sind bei Walzgütern 2 der verschiedensten
Abmessungen einsetzbar. Besonders vorteilhaft ist es aber,
wenn das Walzgut 2 ein mittelschweres oder ein schweres
Stahlprofil ist, das Kühlbett also dementsprechend ausgebildet
ist. Unter einem mittelschweren Stahlprofil wird dabei
ein Stahlprofil mit einer Kantenlänge a verstanden, die - je
nach Definition - 60, 70, 80, 90 oder 100 mm beträgt. Ab einer
Kantenlänge a von 400, 450, 500, 550 oder 600 mm - wieder
je nach Definition - spricht man von einem schweren Stahlprofil.
Das Profil ist beliebig. Beispielhaft werden T-, I- bzw.
Doppel-T-, U-, X- und Schienenprofile genannt. The cooling method according to the invention and the corresponding one
Cooling beds are 2 of the most varied of rolled goods
Dimensions can be used. However, it is particularly advantageous
if the
- 1, 51, 5
- RollgängeRoller tables
- 22nd
- WalzgutRolling stock
- 33rd
- WalzgutlängsachseLongitudinal rolling stock axis
- 44th
- Transportvorrichtung/HubbalkenTransport device / walking beam
- 6 - 86-8
- AbschnitteSections
- 99
- Wasserverteilungsvorrichtung/SprühvorrichtungWater distribution device / spray device
- 1010th
- ReihenRows
- 1111
- SprühdüsenSpray nozzles
- 1212th
- AbsperrschieberGate valve
- 1313
- Pumpepump
- 1414
- Tanktank
- 1515
- DurchflußmesserFlow meter
- 1616
- ReglerRegulator
- aa
- KantenlängeEdge length
- M, M*M, M *
- WassermengenAmounts of water
Claims (12)
dadurch gekennzeichnet,
daß das Walzgut (2) in einem Anfangsabschnitt (6) nur luftgekühlt wird, sodann in einem Mittelabschnitt (7) mit einer Mittelabschnittbreite durch Versprühen einer Wassermenge (M) auf das Walzgut (2) sprühnebelgekühlt wird und schließlich in einem Endabschnitt (8) luftgetrocknet und luftgekühlt wird.Cooling method for rolling stock (2) in a cooling bed, the rolling stock (2) having a longitudinal axis of the rolling stock (3) and being transported transversely to the longitudinal axis of the rolling stock (3) during cooling, water for cooling the rolling stock (2) being applied to the rolling stock at a working pressure (2) is applied,
characterized,
that the rolling stock (2) is only air-cooled in an initial section (6), then is spray-cooled in a central section (7) with a central section width by spraying a quantity of water (M) onto the rolling stock (2) and finally air-dried in an end section (8) and is air-cooled.
dadurch gekennzeichnet,
daß die Mittelabschnittbreite und/oder die Wassermenge (M) und/oder der Arbeitsdruck einstellbar ist.Cooling method according to claim 1,
characterized,
that the middle section width and / or the amount of water (M) and / or the working pressure is adjustable.
dadurch gekennzeichnet,
daß die Wassermenge (M) nur von unten auf das Walzgut (2) gesprüht wird.Cooling method according to claim 1 or 2,
characterized,
that the amount of water (M) is sprayed onto the rolling stock (2) only from below.
dadurch gekennzeichnet,
daß das Walzgut (2) während Transports quer zur Walzgutlängsachse (3) nicht um die Walzgutlängsachse (3) gedreht wird.Cooling method according to one of the above claims,
characterized,
that the rolling stock (2) is not rotated about the rolling stock longitudinal axis (3) during transport transversely to the rolling stock longitudinal axis (3).
dadurch gekennzeichnet,
daß das Walzgut (2) mittels eines Hubbalkens (4) quer zur Walzgutlängsachse (3) transportiert wird.Cooling method according to one of the above claims,
characterized by
that the rolling stock (2) is transported transversely to the longitudinal axis of the rolling stock (3) by means of a walking beam (4).
dadurch gekennzeichnet,
daß das Walzgut (2) ein mittelschweres oder ein schweres Stahlprofil ist.Cooling method according to one of the above claims,
characterized,
that the rolling stock (2) is a medium or heavy steel profile.
dadurch gekennzeichnet,
daß das Kühlbett quer zur Walzgutlängsachse (3) in einen Anfangsabschnitt (6), einen Mittelabschnitt (7) mit einer Mittelabschnittbreite und einen Endabschnitt (8) unterteilt ist, wobei der Anfangsabschnitt (6) von dem Walzgut (2) zuerst und der Endabschnitt (8) von dem Walzgut (2) zuletzt durchlaufen wird, daß die Wasserverteilungsvorrichtung (9) im Mittelabschnitt (7) angeordnet ist und daß die Wasserverteilungsvorrichtung (9) als Sprühvorrichtung (9) zum Erzeugen eines Sprühnebels ausgebildet ist.Cooling bed for rolling stock (2), which has a longitudinal axis of the rolling stock (3), with a transport device (4) for transporting the rolling stock (2) transversely to the longitudinal axis of the rolling stock (3) and with a water distribution device (9) for applying a quantity of water (M) with a Working pressure on the rolling stock,
characterized,
that the cooling bed is divided transversely to the longitudinal axis of the rolling stock (3) into an initial section (6), a central section (7) with a central section width and an end section (8), the initial section (6) of the rolling stock (2) first and the end section ( 8) from the rolling stock (2) is passed last that the water distribution device (9) is arranged in the central section (7) and that the water distribution device (9) is designed as a spray device (9) for generating a spray mist.
dadurch gekennzeichnet,
daß der Sprühvorrichtung (9) eine Breiteneinstellvorrichtung (12) zum Einstellen der und/oder eine Wassermengeneinstellvorrichtung (13, 15, 16) zum Einstellen der zu versprühenden Wassermenge (M*) und/oder eine Wasserdruckeinstellvorrichtung (13, 15, 16) zum Einstellen des Arbeitsdrucks zugeordnet ist.Cooling bed according to claim 7,
characterized,
that the spray device (9) a width adjustment device (12) for adjusting the and / or a water quantity adjustment device (13, 15, 16) for adjusting the water quantity to be sprayed (M *) and / or a water pressure adjustment device (13, 15, 16) for adjustment is assigned to the working pressure.
dadurch gekennzeichnet,
daß die Sprühvorrichtung (9) unterhalb des Walzguts (2) angeordnet ist.Cooling bed according to claim 7 or 8,
characterized,
that the spray device (9) is arranged below the rolling stock (2).
dadurch gekennzeichnet,
daß es keine Vorrichtungen zum Drehen des Walzguts (2) um die Walzgutlängsachse (3) während des Transports quer zur Walzgutlängsachse (3) aufweist.Cooling bed one of claims 7 to 9,
characterized,
that it has no devices for rotating the rolling stock (2) about the longitudinal axis of the rolling stock (3) during transport transversely to the longitudinal axis of the rolling stock (3).
dadurch gekennzeichnet,
daß die Transportvorrichtung (4) als Hubbalken (4) ausgebildet ist.Cooling bed one of claims 7 to 10,
characterized,
that the transport device (4) is designed as a walking beam (4).
dadurch gekennzeichnet,
daß es als Kühlbett für ein mittelschweres oder ein schweres Stahlprofil ausgebildet ist.Cooling bed one of claims 7 to 11,
characterized,
that it is designed as a cooling bed for a medium or heavy steel profile.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19917725 | 1999-04-20 | ||
| DE19917725A DE19917725B4 (en) | 1999-04-20 | 1999-04-20 | Cooling process for rolling stock and cooling bed |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP1046436A2 true EP1046436A2 (en) | 2000-10-25 |
| EP1046436A3 EP1046436A3 (en) | 2003-12-17 |
| EP1046436B1 EP1046436B1 (en) | 2005-10-05 |
Family
ID=7905143
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP00107140A Expired - Lifetime EP1046436B1 (en) | 1999-04-20 | 2000-04-10 | Cooling method and cooling bed for rolled products |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US6237385B1 (en) |
| EP (1) | EP1046436B1 (en) |
| JP (1) | JP2000312914A (en) |
| AT (1) | ATE305828T1 (en) |
| DE (2) | DE19917725B4 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2644719A1 (en) * | 2012-03-28 | 2013-10-02 | Siemens Aktiengesellschaft | Cooling control |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100369049C (en) * | 2005-02-18 | 2008-02-13 | 富士通株式会社 | Precise dividing device and method for grayscale character |
| KR100646156B1 (en) | 2005-11-01 | 2006-11-14 | 조소곤 | Cooling equipment cooling bed used rolling mill facility |
| JP4998712B2 (en) * | 2007-03-15 | 2012-08-15 | Ｊｆｅスチール株式会社 | Cooling method for continuous cast slab |
| DE102007046279A1 (en) * | 2007-09-27 | 2009-04-09 | Siemens Ag | Operating method for a cooling line with centralized detection of valve characteristics and objects corresponding thereto |
| KR100916061B1 (en) | 2007-11-20 | 2009-09-08 | 주식회사 포스코 | Apparatus for cooling wire rod coil |
| KR101032514B1 (en) | 2008-10-24 | 2011-05-04 | 주식회사 포스코 | Wire-rod Coil Cooling Apparatus |
| CN107716566B (en) * | 2017-10-26 | 2019-01-18 | 中冶华天南京电气工程技术有限公司 | 2 sections of walking beam cooler methods of operation of cage guide steel and synchronous operation control method |
| DE102018219276A1 (en) * | 2018-03-12 | 2019-09-12 | Sms Group Gmbh | Cooling group of a laminar cooling device |
| CN115041655A (en) * | 2022-07-04 | 2022-09-13 | 重庆钢铁股份有限公司 | Method for preventing casting blank from bending under high temperature |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1133969A (en) * | 1965-07-28 | 1968-11-20 | Siemag Siegener Masch Bau | A cooling system for bar-shaped rolled stock |
| GB1139633A (en) * | 1965-05-18 | 1969-01-08 | Demag Ag | Method and apparatus for cooling hot-rolled material |
| US3648996A (en) * | 1969-01-20 | 1972-03-14 | Nippon Steel Corp | Apparatus for cooling high temperature metal plates |
| JPS60245719A (en) * | 1984-05-19 | 1985-12-05 | Kawasaki Steel Corp | Method and device for cooling long-sized steel material having circular section |
| SU1187341A1 (en) * | 1983-03-04 | 1989-04-07 | Украинский Государственный Институт По Проектированию Металлургических Заводов | Method of positive air-cooling of rolled stock on cooler table |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3533261A (en) * | 1967-06-15 | 1970-10-13 | Frans Hollander | Method and a device for cooling hot-rolled metal strip on a run-out table after being rolled |
| DE1602169A1 (en) * | 1967-07-11 | 1970-01-29 | Schloemann Ag | Device for cooling rod-shaped rolled material, in particular billets and fine steel |
| US3479853A (en) * | 1967-08-29 | 1969-11-25 | Jones & Laughlin Steel Corp | Hot rolling of light gauge strip |
| US3604234A (en) * | 1969-05-16 | 1971-09-14 | Gen Electric | Temperature control system for mill runout table |
| JPS498446A (en) * | 1972-05-23 | 1974-01-25 | ||
| DE2361305A1 (en) * | 1973-12-08 | 1975-06-12 | Kessler & Luch Kg | Cooling metal sections, esp steel billets - using bed with combined air and water cooling |
| JP3356283B2 (en) * | 1992-02-24 | 2002-12-16 | アルキャン・インターナショナル・リミテッド | Method and apparatus for applying and removing liquid refrigerant for temperature control of a continuously moving metal strip |
| DE19621844A1 (en) * | 1996-05-30 | 1997-12-04 | Schloemann Siemag Ag | Aerosol-cooling process for rolled products |
-
1999
- 1999-04-20 DE DE19917725A patent/DE19917725B4/en not_active Expired - Fee Related
-
2000
- 2000-04-10 EP EP00107140A patent/EP1046436B1/en not_active Expired - Lifetime
- 2000-04-10 AT AT00107140T patent/ATE305828T1/en active
- 2000-04-10 DE DE50011274T patent/DE50011274D1/en not_active Expired - Lifetime
- 2000-04-18 US US09/551,338 patent/US6237385B1/en not_active Expired - Lifetime
- 2000-04-19 JP JP2000117980A patent/JP2000312914A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1139633A (en) * | 1965-05-18 | 1969-01-08 | Demag Ag | Method and apparatus for cooling hot-rolled material |
| GB1133969A (en) * | 1965-07-28 | 1968-11-20 | Siemag Siegener Masch Bau | A cooling system for bar-shaped rolled stock |
| US3648996A (en) * | 1969-01-20 | 1972-03-14 | Nippon Steel Corp | Apparatus for cooling high temperature metal plates |
| SU1187341A1 (en) * | 1983-03-04 | 1989-04-07 | Украинский Государственный Институт По Проектированию Металлургических Заводов | Method of positive air-cooling of rolled stock on cooler table |
| JPS60245719A (en) * | 1984-05-19 | 1985-12-05 | Kawasaki Steel Corp | Method and device for cooling long-sized steel material having circular section |
Non-Patent Citations (1)
| Title |
|---|
| PATENT ABSTRACTS OF JAPAN vol. 010, no. 120 (C-343), 6. Mai 1986 (1986-05-06) -& JP 60 245719 A (KAWASAKI SEITETSU KK), 5. Dezember 1985 (1985-12-05) * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2644719A1 (en) * | 2012-03-28 | 2013-10-02 | Siemens Aktiengesellschaft | Cooling control |
| WO2013143925A1 (en) * | 2012-03-28 | 2013-10-03 | Siemens Aktiengesellschaft | Cooling process control |
Also Published As
| Publication number | Publication date |
|---|---|
| DE19917725A1 (en) | 2000-11-02 |
| EP1046436A3 (en) | 2003-12-17 |
| ATE305828T1 (en) | 2005-10-15 |
| DE19917725B4 (en) | 2005-02-24 |
| EP1046436B1 (en) | 2005-10-05 |
| JP2000312914A (en) | 2000-11-14 |
| DE50011274D1 (en) | 2005-11-10 |
| US6237385B1 (en) | 2001-05-29 |
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