EP0794022A2 - Method, device and cooling medium for the cooling of profiles - Google Patents
Method, device and cooling medium for the cooling of profiles Download PDFInfo
- Publication number
- EP0794022A2 EP0794022A2 EP97102738A EP97102738A EP0794022A2 EP 0794022 A2 EP0794022 A2 EP 0794022A2 EP 97102738 A EP97102738 A EP 97102738A EP 97102738 A EP97102738 A EP 97102738A EP 0794022 A2 EP0794022 A2 EP 0794022A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- profile
- cooling
- aerosol
- air
- liquid
- 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 38
- 238000000034 method Methods 0.000 title claims abstract description 16
- 239000002826 coolant Substances 0.000 title claims abstract description 14
- 239000000443 aerosol Substances 0.000 claims abstract description 23
- 239000007788 liquid Substances 0.000 claims abstract description 20
- 238000009736 wetting Methods 0.000 claims abstract description 3
- 210000000056 organ Anatomy 0.000 claims description 14
- 230000001133 acceleration Effects 0.000 claims description 5
- 230000015572 biosynthetic process Effects 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 239000007970 homogeneous dispersion Substances 0.000 claims description 2
- 239000000654 additive Substances 0.000 claims 1
- 238000005260 corrosion Methods 0.000 claims 1
- 230000007797 corrosion Effects 0.000 claims 1
- 230000002401 inhibitory effect Effects 0.000 claims 1
- 238000005096 rolling process Methods 0.000 description 12
- 230000009467 reduction Effects 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000010583 slow cooling Methods 0.000 description 1
- 230000007704 transition 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
- B21B45/02—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 lubricating, cooling, or cleaning
- B21B45/0203—Cooling
- B21B45/0209—Cooling devices, e.g. using gaseous coolants
- B21B45/0215—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes
- B21B45/0233—Spray nozzles, Nozzle headers; Spray systems
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
- B05B13/02—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work
- B05B13/0207—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work the work being an elongated body, e.g. wire or pipe
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
- B05B7/02—Spray pistols; Apparatus for discharge
- B05B7/04—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge
- B05B7/0416—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
- B05B7/02—Spray pistols; Apparatus for discharge
- B05B7/04—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge
- B05B7/0416—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid
- B05B7/0425—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid without any source of compressed gas, e.g. the air being sucked by the pressurised liquid
-
- 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
- B21B45/02—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 lubricating, cooling, or cleaning
- B21B45/0203—Cooling
- B21B45/0209—Cooling devices, e.g. using gaseous coolants
- B21B45/0215—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/62—Quenching devices
- C21D1/667—Quenching devices for spray quenching
Definitions
- the invention relates to a method and an apparatus and a cooling medium for cooling warm-rolled profiles by means of a cooling medium.
- Slow cooling of rolling stock from the rolling heat is known, for example on a cooling bed with still air.
- moving air in the form of a high-energy flow from fans is used.
- a gradient of the temperature decrease in the rolling stock to be cooled that is up to a factor of 3 compared to cooling in still air results in some cases.
- the invention is based on the object of specifying a method, a device suitable for carrying it out, and a cooling medium by which the aforementioned difficulties and disadvantages are at least largely overcome and the economic data of a cooling device are substantially improved.
- the object is achieved in a method for cooling warm-rolled profiles with the invention in that air is used as the cooling medium, to which a liquid wetting the profile is added and homogeneously dispersed therein as an aerosol.
- a device for performing the method is characterized in that it has at least one organ for generating an energy-rich aerosol flow, which preferably connects to a compressed air source has pressure-adjustable acceleration nozzle and a connection to a liquid supply device.
- the organ is preferably designed with a connection for intake air as a self-priming injector for liquid and air and has means for proportionally setting a predetermined ratio of air and liquid dispersible therein. Further configurations of the devices are provided according to the subclaims.
- a cooling medium for a hot-rolled roll profile which predominantly contains air, is characterized according to the invention in that the air contains portions of liquid in homogeneous dispersion with the formation of a cooling aerosol.
- Figure 1 shows an organ (10) for generating an energy-rich aerosol flow (26). It has an acceleration nozzle (12) which can be connected to a compressed air source (11) and at least one connection (13) for sucking in liquid from a liquid supply device (14). Upstream of the acceleration nozzle (12) there is a throttle valve (2) for setting the amount of compressed air fed in. Furthermore, there is a connection (15) for intake air on the organ (10). Both in the connection (15) and in the liquid supply device (14) there are means (16, 17), for example in the form of pivotable throttle disks, for proportionally setting a predetermined air / liquid ratio.
- the organ (10) with the acceleration nozzle (12) and the housing (3) is designed as a self-priming injector for liquid and air.
- the housing (3) is narrowed in the cross-sectional area of connection (13) in the manner of a Venturi tube and then continuously expanded to the free end. This results in a vacuum zone in the area of the narrowest cross-section and upstream of it, which enables the organ (10) to automatically suck in liquid and air and to homogeneously disperse the two media into an intensive aerosol flow (26).
- FIG. 2 An exemplary arrangement is shown in FIG. 2, in which a plurality of aerosol-generating organs (10), one behind the other in the direction of movement (4) of the profile (1) the profile (1) vertically intersecting plane are each arranged on a common holder (18), concentrically directed against the profile (1), with the formation of a cooling system.
- an arrangement can be provided in which a plurality of cooling systems provided in the transport direction (4) of the profile (1) are arranged in series to form a cooling section (19).
- the aerosol streams (26) formed by the aerosol-producing organs (10) envelop the profile (1) with dense aerosol clouds from directed high-energy flows which are blown against the profile (1) and in this way for rapid cooling to care.
- FIG. 4 shows comparative curves of the cooling times of the same type of rolling profile as a function of different cooling media.
- the top curve I represents the cooling process of a rolling profile from initially 900 ° C to 90 ° C within 70 minutes in still, dry air.
- the middle curve II shows the cooling behavior of a rolling profile with accelerated air flow from an initial 900 ° C to 90 ° C within 26 minutes.
- the lower curve III using an accelerated aerosol flow, a rolling profile is rapidly cooled from 900 ° C. to 90 ° C. in 7.5 minutes. It has thus been proven that cooling with a water / air aerosol as the cooling medium brings about a significant improvement in the cooling behavior in the case of goods that are hot from the roll.
- devices for producing aerosol of the water / air type can be used different ways known to those skilled in the art are generated.
- liquid and air can be forcibly conveyed, metered volumetrically and atomized.
- the arrangement or design of cooling systems or cooling sections is also left to the experience of the specialist, depending on the operational situation.
- the invention is uncomplicated and effective and, in addition to the economical use of the carrier medium air, enables a reduction in the system parts required for cooling hot-rolled profiles and in their energy requirements. In this respect, the invention optimally fulfills the task set out above.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatments In General, Especially Conveying And Cooling (AREA)
- Nozzles (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
Description
Die Erfindung betrifft ein Verfahren und eine Vorrichtung sowie ein Kühlmedium zum Kühlen von walzwarmen Profilen mittels eines Kühlmediums.The invention relates to a method and an apparatus and a cooling medium for cooling warm-rolled profiles by means of a cooling medium.
Bekannt ist langsames Abkühlen von Walzgut aus der Walzhitze, beispielsweise auf einem Kühlbett mit ruhender Luft. Für schneileres Abkühlen wird zwangsweise bewegte Luft in Form einer energiereichen Strömung aus Ventilatoren verwendet. Je nach den sich dabei einstellenden Parametern wie Masse oder Struktur des abzukühlenden Walzgutes, Geschwindigkeit der Kühlluftströmung, deren Temperatur und/oder Feuchte ergibt sich fallweise ein bis Faktor 3 gegenüber Abkühlung in ruhender Luft erhöhter Gradient der Temperaturerniedrigung beim abzukühlenden Walzgut.Slow cooling of rolling stock from the rolling heat is known, for example on a cooling bed with still air. For faster cooling, moving air in the form of a high-energy flow from fans is used. Depending on the parameters that arise, such as the mass or structure of the rolling stock to be cooled, the speed of the cooling air flow, its temperature and / or humidity, a gradient of the temperature decrease in the rolling stock to be cooled that is up to a factor of 3 compared to cooling in still air results in some cases.
Wegen des bei Kühlung in ruhender oder bewegter Luft relativ geringen Wärme-Übergangskoeffizienten zwischen Walzgut und Luft wird für die vorgesehene Temperaturerniedrigung eines Walzgutes eine vergleichsweise große Luftmenge benötigt. Im Falle eines Kühlbettes hat dies beispielsweise zur Folge, daß das Kühlbett eine große Länge und Breite erfordert und entsprechend hohe sowohl Investitions- als auch Betriebskosten, beispielsweise für Transport- und Betriebsmittel, erfordert. Im Falle zwangsweise beschleunigter Kühlluft zur Erzielung eines intensiveren Kühlverlaufes erfordert dies eine kostenträchtige Lüfterkapazität mit hohem Energieeinsatz, weil in vielen Fällen der energetische und/oder thermische Wirkungsgrad eines derartigen Kühlsystems relativ gering sein kann.Because of the relatively low heat transition coefficient between rolling stock and air when cooling in still or moving air, a comparatively large amount of air is required for the intended temperature reduction of a rolling stock. In the case of a cooling bed, this has the consequence, for example, that the cooling bed requires a large length and width and correspondingly high both investment and Operating costs, for example for transport and operating resources, required. In the case of forcedly accelerated cooling air to achieve a more intensive cooling process, this requires a costly fan capacity with high energy input, because in many cases the energy and / or thermal efficiency of such a cooling system can be relatively low.
Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren, eine zu dessen Ausführung geeignete Vorrichtung und ein Kühlmedium anzugeben, durch welche die vorgenannten Schwierigkeiten und Nachteile wenigstens größtenteils überwunden und die ökonomischen Daten einer Kühlvorrichtung wesentlich verbessert werden.The invention is based on the object of specifying a method, a device suitable for carrying it out, and a cooling medium by which the aforementioned difficulties and disadvantages are at least largely overcome and the economic data of a cooling device are substantially improved.
Die Lösung der gestellten Aufgabe wird bei einem Verfahren zum Kühlen walzwarmer Profile mit der Erfindung dadurch erreicht, daß als Kühlmedium Luft verwendet wird, der eine das Profil benetzende Flüssigkeit zugesetzt und darin als Aerosol homogen dispergiert wird.The object is achieved in a method for cooling warm-rolled profiles with the invention in that air is used as the cooling medium, to which a liquid wetting the profile is added and homogeneously dispersed therein as an aerosol.
Durch die Verwendung eines Aerosols als Kühlmittel wird der Wärmeübergangskoeffizient zwischen dem strömenden Kühlmedium und der Oberfläche des zu kühlenden Walzgutes und damit der Gradient der Temperaturerniedrigung des Walzgutes signifikant verbessert. Weitere Ausgestaltungen des Verfahrens sind entsprechend den Unteransprüchen vorgesehen.By using an aerosol as a coolant, the heat transfer coefficient between the flowing cooling medium and the surface of the rolling stock to be cooled and thus the gradient of the temperature reduction of the rolling stock is significantly improved. Further refinements of the method are provided in accordance with the subclaims.
Eine Vorrichtung zur Durchführung des Verfahrens ist dadurch gekennzeichnet, daß sie wenigstens ein Organ zur Erzeugung einer energiereichen Aerosol-Strömung aufweist, welches eine an eine Druckluftquelle anschließbare, bevorzugt druckeinstellbare Beschleunigungsdüse und einen Anschluß an eine Flüssigkeitszufuhreinrichtung besitzt.A device for performing the method is characterized in that it has at least one organ for generating an energy-rich aerosol flow, which preferably connects to a compressed air source has pressure-adjustable acceleration nozzle and a connection to a liquid supply device.
Bevorzugt ist das Organ mit einem Anschluß für Ansaugluft als selbstansaugender Injektor für Flüssigkeit und Luft ausgebildet und besitzt Mittel zum anteilmäßigen Einstellen eines vorgegebenen Verhältnisses von Luft und darin dispergierbarer Flüssigkeit. Weitere Ausgestaltungen der Vorrichtungen sind entsprechend den Unteransprüchen vorgesehen.The organ is preferably designed with a connection for intake air as a self-priming injector for liquid and air and has means for proportionally setting a predetermined ratio of air and liquid dispersible therein. Further configurations of the devices are provided according to the subclaims.
Ein Kühlmedium für walzwarmes Walzprofil, welches überwiegend Luft enthält, ist erfindungsgemäß dadurch gekennzeichnet, daß die Luft Anteile von Flüssigkeit in homogener Dispersion unter Ausbildung eines Kühl-Aerosols enthält.A cooling medium for a hot-rolled roll profile, which predominantly contains air, is characterized according to the invention in that the air contains portions of liquid in homogeneous dispersion with the formation of a cooling aerosol.
Weitere Einzelheiten, Merkmale und Vorteile der Erfindung werden nachfolgend anhand von Zeichnungen erläutert.Further details, features and advantages of the invention are explained below with reference to drawings.
Es zeigen:
- Fig. 1
- ein Organ zur Erzeugung einer energiereichen Aerosol-Strömung, im Schnitt,
- Fig. 2
- mehrere Aerosol erzeugende Organe in einer das Profil senkrecht schneidenden Ebene an einer gemeinsamen Halterung unter Ausbildung eines Kühlsystems, in perspektivischer Ansicht,
- Fig. 3
- mehrere in Transportrichtung des Profils unter Ausbildung einer Kühlstrecke vorgesehene Kühlsysteme, in Seitenansicht,
- Fig. 4
- vergleichendes Diagramm der Abkühlzeiten.
- Fig. 1
- an organ for generating a high-energy aerosol flow, on average,
- Fig. 2
- several aerosol-producing organs in a plane that perpendicularly intersects the profile on a common holder with the formation of a cooling system, in a perspective view,
- Fig. 3
- several provided in the transport direction of the profile with formation of a cooling section Cooling systems, in side view,
- Fig. 4
- comparative diagram of cooling times.
Figur 1 zeigt ein Organ (10) zur Erzeugung einer energiereichen Aerosol-Strömung (26). Es besitzt eine an eine Druckluftquelle (11) anschließbare Beschleunigungsdüse (12) und wenigstens einen Anschluß (13) zum Ansaugen von Flüssigkeit aus einer Flüssigkeitszufuhreinrichtung (14). Stromaufwärts der Beschleunigungsdüse (12) befindet sich ein Drosselventil (2) zum Einstellen der eingespeisten Druckluftmenge. Weiterhin befindet sich an dem Organ (10) ein Anschluß (15) für Ansaugluft. Sowohl im Anschluß (15) als auch in der Flüssigkeitszufuhreinrichtung (14) sind Mittel (16, 17) beispielsweise in Form von schwenkbaren Drosselscheiben zum anteilmäßigen Einstellen eines vorgegebenen Verhältnisses Luft/Flüssigkeit vorhanden. Das Organ (10) mit der Beschleunigungsdüse (12) und dem Gehäuse (3) ist als selbstansaugender Injektor für Flüssigkeit und Luft ausgebildet. Hierfür ist das Gehäuse (3) im Querschnittsbereich von Anschluß (13) nach Art eines Venturi-Rohres verengt und daran anschließend zum freien Ende stetig erweitert. Dadurch ergibt sich im Bereich des engsten Querschnittes und stromaufwärts davon eine Unterdruck-Zone, die es dem Organ (10) ermöglicht, selbsttätig Flüssigkeit und Luft anzusaugen und die beiden Medien zu einer intensiven Aerosol-Strömung (26) homogen zu dispergieren.Figure 1 shows an organ (10) for generating an energy-rich aerosol flow (26). It has an acceleration nozzle (12) which can be connected to a compressed air source (11) and at least one connection (13) for sucking in liquid from a liquid supply device (14). Upstream of the acceleration nozzle (12) there is a throttle valve (2) for setting the amount of compressed air fed in. Furthermore, there is a connection (15) for intake air on the organ (10). Both in the connection (15) and in the liquid supply device (14) there are means (16, 17), for example in the form of pivotable throttle disks, for proportionally setting a predetermined air / liquid ratio. The organ (10) with the acceleration nozzle (12) and the housing (3) is designed as a self-priming injector for liquid and air. For this purpose, the housing (3) is narrowed in the cross-sectional area of connection (13) in the manner of a Venturi tube and then continuously expanded to the free end. This results in a vacuum zone in the area of the narrowest cross-section and upstream of it, which enables the organ (10) to automatically suck in liquid and air and to homogeneously disperse the two media into an intensive aerosol flow (26).
In der Figur 2 ist eine beispielhafte Anordnung gezeigt, bei welcher mehrere Aerosol-erzeugende Organe (10), in Bewegungsrichtung (4) des Profils (1) hintereinander, in einer das Profil (1) senkrecht schneidenden Ebene jeweils an einer gemeinsamen Halterung (18), konzentrisch gegen das Profil (1) gerichtet, unter Ausbildung eines Kühlsystems angeordnet sind.An exemplary arrangement is shown in FIG. 2, in which a plurality of aerosol-generating organs (10), one behind the other in the direction of movement (4) of the profile (1) the profile (1) vertically intersecting plane are each arranged on a common holder (18), concentrically directed against the profile (1), with the formation of a cooling system.
Und schließlich kann gemäß einer rein schematischen Darstellung in der Figur 3 eine Anordnung vorgesehen sein, bei welcher mehrere in Transportrichtung (4) des Profils (1) vorgesehene Kühlsysteme unter Ausbildung einer Kühlstrecke (19) in Reihe angeordnet sind. Die von den Aerosol-erzeugenden Organen (10) gebildeten Aerosol-Ströme (26) umhüllen das Profil (1) mit dichten Aerosol-Wolken aus gerichteten energiereichen Strömungen, die gegen das Profil (1) geblasen werden und auf diese Weise für eine rasche Kühlung sorgen.And finally, according to a purely schematic representation in FIG. 3, an arrangement can be provided in which a plurality of cooling systems provided in the transport direction (4) of the profile (1) are arranged in series to form a cooling section (19). The aerosol streams (26) formed by the aerosol-producing organs (10) envelop the profile (1) with dense aerosol clouds from directed high-energy flows which are blown against the profile (1) and in this way for rapid cooling to care.
Figur 4 zeigt vergleichende Kurven der Abkühlzeiten jeweils gleichartiger Walzprofile in Abhängigkeit von unterschiedlichen Kühlmedien. Die oberste Kurve I stellt den Abkühlverlauf eines Walzprofils von anfänglich 900 °C auf 90 °C innerhalb von 70 Minuten in ruhender, trockener Luft dar. Die mittlere Kurve II zeigt das Abkühlverhalten eines Walzprofils mit beschleunigter Luftströmung von anfänglich 900 °C auf 90 °C innerhalb von 26 Minuten. Nach der unteren Kurve III findet unter Verwendung einer beschleunigten Aerosolströmung eine rapide Abkühlung eines Walzprofils von 900 °C auf 90 °C in 7,5 Minuten statt. Damit ist erwiesen, daß die Abkühlung mit einem Wasser/Luft-Aerosol als Kühlmedium eine signifikante Verbesserung des Abkühlverhaltens bei walzwarmem Gut bewirkt.FIG. 4 shows comparative curves of the cooling times of the same type of rolling profile as a function of different cooling media. The top curve I represents the cooling process of a rolling profile from initially 900 ° C to 90 ° C within 70 minutes in still, dry air. The middle curve II shows the cooling behavior of a rolling profile with accelerated air flow from an initial 900 ° C to 90 ° C within 26 minutes. According to the lower curve III, using an accelerated aerosol flow, a rolling profile is rapidly cooled from 900 ° C. to 90 ° C. in 7.5 minutes. It has thus been proven that cooling with a water / air aerosol as the cooling medium brings about a significant improvement in the cooling behavior in the case of goods that are hot from the roll.
Die Erfindung ist nicht auf die in den Figuren gezeigten Beispiele beschränkt. Insbesondere können Vorrichtungen zur Erzeugung von Aerosol des Typs Wasser/Luft auf unterschiedliche, dem Fachmann bekannte Art und Weise erzeugt werden. Beispielsweise können Flüssigkeit und Luft zwangsweise gefördert, volumetrisch dosiert und zerstäubt werden. Auch die Anordnung bzw. Ausbildung von Kühlsystemen oder Kühlstrecken ist je nach betrieblicher Situation der Erfahrung des Fachmannes überlassen.The invention is not restricted to the examples shown in the figures. In particular, devices for producing aerosol of the water / air type can be used different ways known to those skilled in the art are generated. For example, liquid and air can be forcibly conveyed, metered volumetrically and atomized. The arrangement or design of cooling systems or cooling sections is also left to the experience of the specialist, depending on the operational situation.
Die Erfindung ist unkompliziert und wirksam und ermöglicht außer sparsamem Einsatz des Trägermediums Luft eine Reduzierung der für die Kühlung walzwarmer Profile erforderlichen Anlagenteile und deren Energiebedarf. Insofern erfüllt die Erfindung in optimaler Weise die eingangs gestellte Aufgabe.The invention is uncomplicated and effective and, in addition to the economical use of the carrier medium air, enables a reduction in the system parts required for cooling hot-rolled profiles and in their energy requirements. In this respect, the invention optimally fulfills the task set out above.
Claims (12)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19608965 | 1996-03-08 | ||
| DE19608965A DE19608965A1 (en) | 1996-03-08 | 1996-03-08 | Method and device as well as cooling medium for cooling warm-rolled profiles |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0794022A2 true EP0794022A2 (en) | 1997-09-10 |
| EP0794022A3 EP0794022A3 (en) | 1998-02-04 |
| EP0794022B1 EP0794022B1 (en) | 2001-10-17 |
Family
ID=7787593
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP97102738A Expired - Lifetime EP0794022B1 (en) | 1996-03-08 | 1997-02-20 | Method, device and cooling medium for the cooling of profiles |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US5775122A (en) |
| EP (1) | EP0794022B1 (en) |
| JP (1) | JPH105844A (en) |
| AT (1) | ATE206964T1 (en) |
| DE (2) | DE19608965A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0925855A2 (en) * | 1997-12-23 | 1999-06-30 | Sms Schloemann-Siemag Aktiengesellschaft | Device for the controlled cooling from the rolling temperature of hot-rolled profiles, in particular beams |
| CN105268569A (en) * | 2015-11-11 | 2016-01-27 | 西安交通大学 | Mixing device for gas-liquid two-phase annular flow jet flow and main flow gas |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE514171C2 (en) * | 1998-02-03 | 2001-01-15 | Ericsson Telefon Ab L M | Apparatus and method for air cooling of an electrical device |
| FR2800643B1 (en) * | 1999-11-05 | 2002-08-30 | Rhodia Chimie Sa | SPRAYING DEVICE AND ITS APPLICATION TO A BACTERICIDAL TREATMENT TUNNEL |
| US6328226B1 (en) | 1999-12-22 | 2001-12-11 | Visteon Global Technologies, Inc. | Nozzle assembly |
| DE10124166B8 (en) * | 2001-05-15 | 2006-12-14 | Schott Ag | Method for cooling system components which are exposed to flowable media |
| CN101669002B (en) * | 2007-04-26 | 2012-11-28 | 松下电器产业株式会社 | Refrigerator, and electric device |
Citations (10)
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|---|---|---|---|---|
| DE2040610A1 (en) * | 1969-12-01 | 1971-06-16 | Nippon Kokan Kk | Method and device for cooling steel objects |
| DE2148722A1 (en) * | 1970-10-02 | 1972-05-10 | Wendel Sidelor | Process for the heat treatment of rails with a high resistance to wear and the rails produced thereby |
| DE2165049A1 (en) * | 1970-12-28 | 1972-07-13 | Nippon Kokan Kk | Apparatus and method for quenching metal material |
| DE2702143A1 (en) * | 1976-01-23 | 1977-07-28 | Centre Rech Metallurgique | DEVICE FOR COOLING METAL PROFILES |
| US4065252A (en) * | 1974-06-19 | 1977-12-27 | Midland-Ross Corporation | Spray mist cooling arrangement |
| DE2751013A1 (en) * | 1977-11-15 | 1979-05-17 | Kleinewefers Gravuren | Spray quenching device for steel plates - with venturi nozzles and water influx through perforated tube at venturi bottleneck |
| DE2951818A1 (en) * | 1978-12-22 | 1980-07-03 | Heurtey Metallurgie | METHOD FOR CONTINUOUS COOLING TREATMENT OF METAL WORKPIECES, IN PARTICULAR SHEETS |
| FR2455255A1 (en) * | 1979-04-23 | 1980-11-21 | Centre Rech Metallurgique | Cooling round metallic bars - using longitudinally arranged nozzle assemblies, each being angled to the adjacent assembly |
| WO1992019395A1 (en) * | 1991-04-29 | 1992-11-12 | Bertin & Cie | Method and device for cooling a section being rolled |
| DE4430856A1 (en) * | 1994-08-31 | 1996-03-14 | Kloeckner Stahl Gmbh | Process for reducing and controlling the surface scaling when hot rolling flat products, especially hot strips |
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| GB623674A (en) * | 1947-05-09 | 1949-05-20 | Electric Furnace Co | Improvements relating to heat treatment including quenching |
| US4273744A (en) * | 1978-11-27 | 1981-06-16 | Borg-Warner Corporation | Device for automatic addition of a corrosion inhibitor to a coolant system |
| BE896219A (en) * | 1983-03-18 | 1983-09-19 | Centre Rech Metallurgique | Cooling of hot rolled profiles - controlled to avoid profile distortion |
-
1996
- 1996-03-08 DE DE19608965A patent/DE19608965A1/en not_active Withdrawn
-
1997
- 1997-02-20 EP EP97102738A patent/EP0794022B1/en not_active Expired - Lifetime
- 1997-02-20 DE DE59704914T patent/DE59704914D1/en not_active Expired - Fee Related
- 1997-02-20 AT AT97102738T patent/ATE206964T1/en not_active IP Right Cessation
- 1997-02-28 JP JP9045958A patent/JPH105844A/en active Pending
- 1997-03-07 US US08/813,762 patent/US5775122A/en not_active Expired - Fee Related
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2040610A1 (en) * | 1969-12-01 | 1971-06-16 | Nippon Kokan Kk | Method and device for cooling steel objects |
| DE2148722A1 (en) * | 1970-10-02 | 1972-05-10 | Wendel Sidelor | Process for the heat treatment of rails with a high resistance to wear and the rails produced thereby |
| DE2165049A1 (en) * | 1970-12-28 | 1972-07-13 | Nippon Kokan Kk | Apparatus and method for quenching metal material |
| US4065252A (en) * | 1974-06-19 | 1977-12-27 | Midland-Ross Corporation | Spray mist cooling arrangement |
| DE2702143A1 (en) * | 1976-01-23 | 1977-07-28 | Centre Rech Metallurgique | DEVICE FOR COOLING METAL PROFILES |
| DE2751013A1 (en) * | 1977-11-15 | 1979-05-17 | Kleinewefers Gravuren | Spray quenching device for steel plates - with venturi nozzles and water influx through perforated tube at venturi bottleneck |
| DE2951818A1 (en) * | 1978-12-22 | 1980-07-03 | Heurtey Metallurgie | METHOD FOR CONTINUOUS COOLING TREATMENT OF METAL WORKPIECES, IN PARTICULAR SHEETS |
| FR2455255A1 (en) * | 1979-04-23 | 1980-11-21 | Centre Rech Metallurgique | Cooling round metallic bars - using longitudinally arranged nozzle assemblies, each being angled to the adjacent assembly |
| WO1992019395A1 (en) * | 1991-04-29 | 1992-11-12 | Bertin & Cie | Method and device for cooling a section being rolled |
| DE4430856A1 (en) * | 1994-08-31 | 1996-03-14 | Kloeckner Stahl Gmbh | Process for reducing and controlling the surface scaling when hot rolling flat products, especially hot strips |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0925855A2 (en) * | 1997-12-23 | 1999-06-30 | Sms Schloemann-Siemag Aktiengesellschaft | Device for the controlled cooling from the rolling temperature of hot-rolled profiles, in particular beams |
| EP0925855A3 (en) * | 1997-12-23 | 2000-08-02 | SMS Demag AG | Device for the controlled cooling from the rolling temperature of hot-rolled profiles, in particular beams |
| CN105268569A (en) * | 2015-11-11 | 2016-01-27 | 西安交通大学 | Mixing device for gas-liquid two-phase annular flow jet flow and main flow gas |
| CN105268569B (en) * | 2015-11-11 | 2017-06-27 | 西安交通大学 | A mixing device for gas-liquid two-phase annular flow jet and mainstream gas |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH105844A (en) | 1998-01-13 |
| EP0794022A3 (en) | 1998-02-04 |
| DE19608965A1 (en) | 1997-09-11 |
| US5775122A (en) | 1998-07-07 |
| ATE206964T1 (en) | 2001-11-15 |
| DE59704914D1 (en) | 2001-11-22 |
| EP0794022B1 (en) | 2001-10-17 |
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