EP0875304B1 - Verfahren und Kühlaggregat zum Kühlen von walzwarmem Walzgut, insbesondere von Warmbreitband - Google Patents
Verfahren und Kühlaggregat zum Kühlen von walzwarmem Walzgut, insbesondere von Warmbreitband Download PDFInfo
- Publication number
- EP0875304B1 EP0875304B1 EP98107703A EP98107703A EP0875304B1 EP 0875304 B1 EP0875304 B1 EP 0875304B1 EP 98107703 A EP98107703 A EP 98107703A EP 98107703 A EP98107703 A EP 98107703A EP 0875304 B1 EP0875304 B1 EP 0875304B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cooling
- coolant
- pressure
- rolled stock
- convection
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000001816 cooling Methods 0.000 title claims abstract description 89
- 238000005096 rolling process Methods 0.000 title claims description 83
- 238000000034 method Methods 0.000 title claims description 21
- 239000002826 coolant Substances 0.000 claims abstract description 66
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 29
- 238000009835 boiling Methods 0.000 claims abstract description 9
- 238000001704 evaporation Methods 0.000 claims abstract description 8
- 230000008020 evaporation Effects 0.000 claims abstract description 8
- 239000000203 mixture Substances 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 4
- 238000000605 extraction Methods 0.000 abstract description 2
- 229910000831 Steel Inorganic materials 0.000 description 7
- 239000000463 material Substances 0.000 description 7
- 239000010959 steel Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 230000008901 benefit Effects 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000007639 printing Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 241000283153 Cetacea Species 0.000 description 1
- 206010010774 Constipation Diseases 0.000 description 1
- 241000237858 Gastropoda Species 0.000 description 1
- 206010038743 Restlessness Diseases 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 229910001566 austenite Inorganic materials 0.000 description 1
- 230000004323 axial length Effects 0.000 description 1
- 229910001563 bainite Inorganic materials 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 229910000734 martensite Inorganic materials 0.000 description 1
- 238000010327 methods by industry Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- IHQKEDIOMGYHEB-UHFFFAOYSA-M sodium dimethylarsinate Chemical class [Na+].C[As](C)([O-])=O IHQKEDIOMGYHEB-UHFFFAOYSA-M 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- 238000004804 winding 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
- 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
- B21B45/0218—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes for strips, sheets, or plates
-
- 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
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
- C21D9/54—Furnaces for treating strips or wire
- C21D9/56—Continuous furnaces for strip or wire
- C21D9/573—Continuous furnaces for strip or wire with cooling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2201/00—Special rolling modes
- B21B2201/04—Ferritic rolling
-
- 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
Definitions
- the invention relates to a method for cooling hot rolled rolling stock, in particular For cooling hot broadband on both sides, using forced convection when exchanging heat between the rolling stock and the cooling medium using a Pressurized water flow made in a pressure room and convection room and the rolling stock by specifically controlling the intensity of the forced convection is cooled, which is independent of one another by relative coordination adjustable parameters, such as dwell time of the rolling stock as it passes through the Pressure room and the subsequent convection room as well as quantity, pressure and Controlled flow rate of the cooling medium and heat from this from the rolling stock up to a safety distance from the boiling point for avoidance unstable film evaporation is recorded.
- the invention relates also an apparatus for performing the method.
- New technologies in ferritic rolling of hot wide strip mean that between the final stands are cooled intensively to low final rolling temperatures if the distances between the scaffolds are not too large.
- rolling thin Dimensions at which the hot strip reel to avoid restless conveyor belt must be arranged closer to the finishing stand water cooling sections with higher cooling intensity are also required.
- DE 39 27 276 A1 discloses a method for hardening steel with the aid of liquid cooling media. It follows from this that with the previously known methods for hardening steel with the aid of liquid cooling media, only a small hardening depth, based on the edge zone, is achieved even with rods with small rod diameters.
- the method according to DE 39 29 276 A1 not only enables a considerable increase in the hardening depth, but also a complete hardening, in particular of rod-shaped rolled products up to 70 mm in diameter, in a particularly simple manner in that the rolled product made of steel immediately after the rolling process supplied with cooling media cooling section and exposed to high flow velocities, expediently the flow velocities in the cooling section are so high that heat transfer numbers greater than or equal to 50,000 W / m 2 K are generated and the rolling stock is cooled therein until the average temperature of the rolling stock cross section is below the MS temperature, so that after leaving the cooling section through the temperature compensation over the cross section, the austenite still present in the core is converted into intermediate stage structure bainite, while at the same time in the martensitic n A large part of the overlapping thermal and transformation stresses is reduced by the temperature rising again to a maximum of MS temperature.
- the heat exchange part consists of a tube with a rectangular cross-section, with wear-resistant guide elements is lined, the opposite of the broad sides of the rolling stock Inner surfaces of the guide elements over the length of the heat exchange part have a variable clear height, while the Narrow sides of the rolling stock opposite inner surfaces of the guide elements a constant clear width over the length of the heat exchange part exhibit.
- EP 0 266 302 B1 discloses a method for cooling hot rolled rolling stock, with / without direct patenting, for pressurized water within a pressurized room is pressed onto the hot rolled surface of the rolling stock between the accumulation edges.
- the cooling unit is pressurized with a quantity of pressurized water, which is preferably in balance with the amount of heat to be extracted from the rolling stock stands to with the removal of heat by heating pressurized water in the pressure chamber a convection refrigerator and by removing heat from the on Pressurized water-steam mixture, evaporative heat given off, preferably up to the boiling point of the pressurized water, the desired cooling temperature of the To achieve rolling stock while cooling in pressurized water as well as in one Control pressurized water-steam mixture.
- the cooling unit exists from the pressure chamber of a convection refrigerator, the so-called convection pressure chamber between damming edges, in the warm rolling stock, mainly by convection, from inflowing and onto the hot rolled surface of the rolling stock Pressed water under pressure, preferably up to the boiling point of the pressurized water is withdrawn.
- the cooling unit also consists of the pressure chamber of an evaporative cooling section, the so-called evaporative pressure chamber between the stowage edges, in which the rolling stock primarily by heat of vaporization, from the flowing through and onto the rolling stock surface pressed heat-steam mixture further heat is removed.
- EP 0 287 503 B1 relates to a method and a cooling unit for cooling of a continuous product and contains characteristics through which the suggestions be further developed according to EP 0 266 302 B1, specifically with the process engineering Features that heat extraction in the convection refrigerator and in the evaporative cooling section of the pressure chamber in the pressure cooling unit except with the predetermined inflow of cooling pressure water and the regulated inflow Amount of pressure water in the convection cooling section, with an additional, regulated inflow of guide pressure water into the evaporative cooling section and further with one, in the area of the high steam content in the the hot water-steam mixture flowing through the evaporative cooling section inflowing proportion of condensation water is guided.
- the device is described in such a way that in addition to the cooling and guiding pressure water inflow in the convection cooling section in the evaporative cooling section further inlet pressurized water inflows and further condensation pressurized water inflows are arranged.
- Document EP-B-0 266 302 discloses a method for cooling hot wide strip, in which forced convection during heat exchange between Rolled stock and cooling medium with the help of a pressurized water flow in a pressure room and convection space and the rolling stock by targeted control the intensity of the forced convection is cooled, the intensity of the Forced convection can be set independently of one another by relative coordination Parameters such as the dwell time of the rolling stock as it passes through the pressure chamber and the subsequent convection space as well as the quantity, pressure and flow velocity controlled by the cooling medium and heat from this the rolling stock is picked up.
- the object of the present invention is compared to this prior art based, a significantly simplified process for cooling warm whale Rolling stock and a corresponding device to specify at largely reduced cooling section length for flat material, especially for hot wide strip with thin dimensions, better through high intensity of cooling To achieve cooling results.
- the invention provides that to control the dwell time of the rolling stock in the printing room at a given rolling speed the length of the in the printing room trained cooling section is set changeable in the rolling direction.
- a safety margin to the boiling point of the cooling medium e.g. ⁇ T> 25 ° C.
- the invention provides that the amount of per unit time coolant flowing into the pressure chamber through a variable cross-section Nozzle gap is set, which is also the speed and determined the direction of the incoming cooling medium. additionally the amount can be changed by varying the inlet pressure.
- the forced convection by flow cooling according to the invention a known pressure and convection room, but between an adjustable nozzle gap and one adjoining the convection room Diffuser is designed to remove the cooling medium. It can be targeted the parameters that can be set independently of one another are thus coordinated be that the cooling medium heat up to the boiling point is withdrawn without evaporation occurring. Then you can the cooling medium after absorbing heat from the rolling stock in the area of Pressure increase is subtracted from the diffuser through the existing openings become.
- the cooling medium in front of the terminal diffuser Convection area with increased speed and reduced flow pressure flows through, which also limits the length of the pressure chamber and is preferably set to be variable in the axial direction.
- the point can quickly pass through the length setting of the pressure chamber at which the unstable film evaporation begins and the so-called suffering frost point is achieved.
- the invention can also be used be that the pressure chamber is transverse to the flow direction of the cooling medium using parallel guide elements into individual, side by side Channels is divided. So far, this has not resulted or only with great Possibility achievable by applying different amounts to the individual Flow channels cooling over the bandwidth, for example, to influence flatness and especially peripheral cooling or subcooling control while minimizing the consumption of cooling medium.
- each cooling channel with regard to exposure to The pressure and quantity of the cooling medium can be controlled individually.
- the setting of the The cooling temperature is adjusted by adjusting the nozzle gap and also with the cooling medium pressure.
- Another advantage of this invention is that between surfaces of the rolling stock and walls of the pressure chamber formed gap-shaped flow areas and are pressed by this cooling medium at high pressure, such that the Rolled material is guided between liquid films formed by the cooling medium.
- An embodiment of the device according to the invention provides that the diffuser in the area of increased cooling medium pressure heated outlets for pulling off Has cooling medium.
- the Device above or below and above and below the rolling stock to form a be box-shaped channel with connections for cooling medium and consist of flat plates into the flow channels on the sides facing the rolling stock are incorporated or trained using attached strips.
- an embodiment essential to the invention provides that the device a scraper with a nozzle gap, for example in the form of a screw is which coolant collects.
- the device for cooling hot rolled rolling stock 1, in particular from Hot wide strip with a for heat exchange between rolling stock 1 and cooling medium preferably designed to raise the suffering frost temperature 10 and the subsequent pressureless convection chamber 13 with means to form a pressure medium flow and to control the intensity
- the forced convection is designed so that the pressure chamber 10 on the entry side of the rolling stock 1, an inflow 32 for the cooling medium in the form of a adjustable quantity and pressure nozzle gap 11 and a terminal diffuser 12 with means 16 for withdrawing the cooling medium.
- a damming element delimiting the pressure chamber 10 33 arranged, which forms the beginning of the convection space 13.
- the adjustable nozzle gap 11 By the interaction of the adjustable nozzle gap 11 with the in the Length adjustable pressure chamber 10 and the subsequent pressureless convection room 13 and the final diffuser 12 and with removal 16 of the Cooling medium can by adjusting the dwell time of the rolling stock 1 at Pass through the pressure chamber 10 and convection chamber 13 (e.g. by changing the length of the cooling section) as well as quantity, pressure and flow velocity the intensity of forced convection is controlled in a reproducible manner are and the cooling medium heat from the rolling stock preferably with a sufficient distance to the boiling point limit to avoid the unstable Film evaporation are transmitted.
- the heat transfer is therefore exact adjustable.
- the predetermined rolling speed can be the axial length of the pressure chamber 10 trained cooling section can be set changeable, for example by a length adjustable Damming element 33, which is also the beginning of the convection space 13.
- the cooling device which is shown only once above the hot strip 1 in FIG. 1 is, can also be mirror-symmetrically advantageous from the bottom of the rolling stock 1 be arranged in an identical manner.
- the nozzle gap 11 has a wedge 34 as an actuator. By setting it According to arrow 38, the amount and / or pressure of the inflow 32 conveyed cooling medium can be set. The well-known Disadvantages of spray nozzles that tend to become blocked are completely avoided.
- the cooling device consists of a flat plate 23 which on the side facing the rolling stock 1 has flow channels 22.
- the size and The number of these channels 22 varies according to the width of the rolling stock.
- Corresponding the illustration shows the flow channels 22 between rectangular band guide rails 21 arranged with a flat surface to the rolling stock 1. So that at a cooling between these channels 22 and the rolling stock 1 at the same time The rolling stock 1 is guided.
- the adjustability of the flow channels provides a further advantageous design in the longitudinal direction in height, which can also be wedge-shaped. Thereby can target the flow velocity and consequently the cooling effect can be varied or adjusted.
- the cooling device shown and described can be above or below or on both sides of the rolling stock 1 and with a short guide, for example between two roll stands are used.
- Fig. 1 also shows the arrangement of a wiper 36 for cooling medium and its deduction according to arrow 39.
- This scraper member 36 has a collecting space preferably in the form of a snail, the excess cooling medium catches safely.
- the device consists of a number of Water boxes 35, which are arranged above or below the flat product 1. she have inflows 32 for cooling medium to be introduced under high pressure and have mushroom-shaped or wedge-shaped outlet control members 34. they form also circular at its periphery or straight in another variant Nozzle column 11, from which the cooling medium under high pressure in the convection pressure chambers 10 exits.
- the shafts are provided with short central holes and have an inlet hole across it, so that pressurized water from the holes emerges below the wedges 34 and in the pressure chambers 10 under forced convection has a cooling effect.
- the cooling medium under pressure in the water tank flows through adjustable Nozzle gaps 11 depending on the setting of the rotationally symmetrical wedges 34 or of the straight wedge 38 in each of the flat product 1 and the box wall formed channel 10 at high speed transverse to the rolling direction and takes one by forced convection depending on the setting of the cooling parameters large amount of heat. So that between the rolled product 1 and the box wall a high pressure can develop in the area of the rolled ends the walls of the water boxes 35 directed towards the rolling stock 1 optionally adjustable labyrinth seals 40 attached.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Metal Rolling (AREA)
- Heat Treatments In General, Especially Conveying And Cooling (AREA)
Description
- Figur 1
- eine Kühlvorrichtung in Seitenansicht und im Längsschnitt,
- Figur 2
- die Vorrichtung im Querschnitt entlang einer Schnittebene II-II in Fig. 1,
- Figur 2a
- verschiedene Strömungskanäle der Kühlvorrichtung in schematischer Darstellung.
- Figur 3
- eine bekannte Vorrichtung zum Kühlen von Flachprodukten mit Hilfe einer Zwangskonvektion, quer zur Walzrichtung, im Schnitt einer Ebene III-III in Fig. 4,
- Figur 4
- die bekannte Vorrichtung gemäß Fig. 3 in Draufsicht.
Claims (17)
- Verfahren zum Kühlen von walzwarmem Walzgut (1), insbesondere zum beidseitigen Kühlen von Warmbreitband, bei dem eine Zwangskonvektion beim Wärmeaustausch zwischen Walzgut (1) und Kühlmedium mit Hilfe einer Druckwasserströmung in einem Druckraum (10) Konvektionsraum (13) vorgenommen und das Walzgut (1) durch gezieltes Steuern der Intensität der Zwangskonvektion gekühlt wird, wobei diese durch relative Abstimmung voneinander unabhängig einstellbarer Parameter wie Verweilzeit des Walzgutes (1) beim Durchlauf durch den Druckraum (10) und den anschließenden Konvektionsraum (13) sowie Menge, Druck und Strömungsgeschwindigkeit des Kühlmediums gesteuert und von diesem Wärme aus dem Walzgut (1) bis zu einem Sicherheitsabstand zum Siedepunkt zwecks Vermeidung einer instabilen Filmverdampfung aufgenommen wird,
dadurch gekennzeichnet, dass zur Steuerung der Verweilzeit des Walzgutes (1) im Druckraum (10) bei vorgegebener Walzgeschwindigkeit die Länge der im Druckraum (10) ausgebildeten Kühlstrecke in Walzrichtung veränderbar eingestellt wird, und
dass zur Steuerung der Verweilzeit des Walzgutes (1) im Konvektionsraum (13) bei vorgegebener Walzgeschwindigkeit die Länge der im Konvektionsraum (13) ausgebildeten Kühlstrecke in Walzrichtung veränderbar eingestellt wird. - Verfahren nach Anspruch 1,
dadurch gekennzeichnet, dass das Kühlmedium im Druck- bzw. Konvektionsraum (10 bzw. 13) in Walzrichtung oder quer dazu geführt wird. - Verfahren nach Anspruch 1 oder 2,
dadurch gekennzeichnet, dass die Menge des pro Zeiteinheit in den Druckraum (10) einströmenden Kühlmediums durch einen querschnittsveränderbaren Düsenspalt (11) eingestellt wird, der zugleich die Geschwindigkeit und Richtung des einströmenden Kühlmediums bestimmt. - Verfahren nach einem der Ansprüche 1 bis 3,
dadurch gekennzeichnet, dass im Bereich des Druckraumes (10) der Entstehung von Dampf oder Dampf-Wasser-Gemisch durch ein Stauelement (33) unter Druckerhöhung des Kühlmediums entgegengewirkt, und
dass das Kühlmedium nach Aufnahme von Wärme aus dem Walzgut (1) im Bereich der Druckerhöhung über einen Diffusor (12) abgezogen wird. - Verfahren nach einem der Ansprüche 1 bis 4,
dadurch gekennzeichnet, dass das Kühlmedium vor dem endständigen Diffusor (12) einen Konvektionsraum (13) mit erhöhter Geschwindigkeit und erniedrigtem Druck durchströmt, der zugleich die Länge des Druckraumes (10) begrenzt und in Walzrichtung veränderlich eingestellt wird, wobei der Strömungsquerschnitt des Druckraumes (10) durch Ändern des Abstandes zwischen der Oberfläche des Walzgutes (1) und zumindest einer Wandung (20) des Druckraumes (10) eingestellt wird. - Verfahren nach einem der Ansprüche 1 bis 5,
dadurch gekennzeichnet, dass der Druckraum (10) quer zur Strömungsrichtung des Kühlmediums unter Verwendung paralleler Führungselemente (21) in nebeneinander liegende Kanäle (22) unterteilt wird, und
dass der Strömungsquerschnitt im Druckraum (10) bzw. in den darin vorhandenen Kanälen (22) in Strömungsrichtung bereichsweise keilförmig eingestellt wird. - Verfahren nach einem der Ansprüche 1 bis 6,
dadurch gekennzeichnet, dass zwischen Flächen des Walzgutes (1) und Wänden des Druckraumes (10) spaltförmige Strömungsbereiche gebildet werden, und durch diese Kühlmedium mit hohem Druck gepresst wird, derart, dass Walzgut zwischen vom Kühlmedium ausgebildeten Flüssigkeitsfilmen geführt wird. - Verfahren nach einem der Ansprüche 1 bis 7,
dadurch gekennzeichnet, dass durch unterschiedliche Beaufschlagung einzelner Kanäle (22) die Kühlung über die Bandbreite, insbesondere zur Planheitsbeeinflussung sowie die Randkühlung bzw. -unterkühlung gesteuert und zugleich der Verbrauch an Kühlmedium auf ein Minimum eingestellt wird. - Verfahren nach einem der vorhergehenden Ansprüche,
gekennzeichnet durch
dessen Anwendung beim Auswalzen von Dünnbrammen nach einem Endloswalzkonzept. - Verfahren nach einem der vorhergehenden Ansprüche,
gekennzeichnet durch
dessen Anwendung als Zwischengerüstkühlung, wobei die Walzguttemperatur so gesteuert wird, dass ein ferritisches Walzen ermöglicht wird. - Vorrichtung zum Kühlen von walzwarmem Walzgut (1), insbesondere zum beidseitigen Kühlen von Warmbreitband, mit einem zum Wärmeaustausch zwischen Walzgut (1) und Kühlmedium für Zwangskonvektion ausgebildeten Druckraum (10) und Konvektionsraum (13) mit Mitteln zur Ausbildung einer Kühlmedium-Strömung sowie zum Steuern der Intensität der Zwangskonvektion, wobei der Druckraum (10) an der Eintrittsseite des Walzgutes (1) eine Einströmung (32) für Kühlmedium in Form eines mengen- und druckeinstellbaren Düsenspaltes (11) und einen endständigen Diffusor (12) mit Mitteln (16) zum Abziehen des Kühlmediums aufweist, und dass in Walzrichtung vor dem Diffusor (12) ein den Druckraum (10) begrenzendes Stauelement (33) angeordnet ist, das den Beginn des Konvektionsraumes (13) darstellt,
dadurch gekennzeichnet, dass das Stauelement (33) unter Veränderung der Länge des Druckraumes (10) und des Konvektionsraumes (13) in Walzrichtung längsverstellbar ausgebildet ist, und dass der Düsenspalt (11) als Stellglied einen Keil (34) aufweist. - Vorrichtung nach Anspruch 11,
dadurch gekennzeichnet, dass der Diffusor (12) im Bereich erhöhten Kühlmediumdruckes Auslässe (16) zum Abziehen erwärmten Kühlmediums besitzt. - Vorrichtung nach Anspruch 11 oder 12,
dadurch gekennzeichnet, dass sie über oder unter und bevorzugt über und unter dem Walzgut (1) unter Bildung eines kastenförmigen Kanals (35) mit Anschlüssen für Kühlmedium ausgebildet ist und aus ebenen Platten (23) besteht, in die auf den dem Walzgut (1) zugewandten Seiten Strömungskanäle (22) eingearbeitet oder mittels aufgesetzter Leisten ausgebildet sind. - Vorrichtung nach einem der Ansprüche 11 bis 13,
dadurch gekennzeichnet, dass ihr ein Abstreiforgan (36) mit Düsenspalt, bspw. in Form einer Schnecke, nachgeordnet ist, die Kühlmedium auffängt. - Vorrichtung nach einem der Ansprüche 11 bis 14,
dadurch gekennzeichnet, dass der Diffusor (12) endständig ein weiteres Stauelement (40) aufweist. - Vorrichtung nach einem der Ansprüche 11 bis 15,
dadurch gekennzeichnet, dass die Kühlvorrichtung und/oder deren Stauelemente (23, 40) und/oder deren Strömungskanäle (22) bzw. deren Strömungsleisten in Richtung der Walzgutoberfläche (1) einstellbar sind. - Vorrichtung nach einem der Ansprüche 11 bis 16,
dadurch gekennzeichnet, dass die zwischen den Führungselementen (21) ausgebildeten Strömungskanäle (22) entweder eine schräge oder auch gewundene Anordnung aufweisen.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19718530 | 1997-05-02 | ||
| DE19718530A DE19718530B4 (de) | 1997-05-02 | 1997-05-02 | Verfahren zum Kühlen von walzwarmem Walzgut und Vorrichtung zur Durchführung des Verfahrens und Verwendung der Vorrichtung |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0875304A2 EP0875304A2 (de) | 1998-11-04 |
| EP0875304A3 EP0875304A3 (de) | 2002-01-02 |
| EP0875304B1 true EP0875304B1 (de) | 2003-12-10 |
Family
ID=7828395
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP98107703A Expired - Lifetime EP0875304B1 (de) | 1997-05-02 | 1998-04-28 | Verfahren und Kühlaggregat zum Kühlen von walzwarmem Walzgut, insbesondere von Warmbreitband |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0875304B1 (de) |
| AT (1) | ATE255965T1 (de) |
| DE (2) | DE19718530B4 (de) |
| ES (1) | ES2212167T3 (de) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10215118C1 (de) * | 2002-04-05 | 2003-06-12 | Rainer Menge | Anordnung zum Kühlen wärmebehandelter Drähte |
| DE102008032932A1 (de) * | 2008-07-12 | 2010-01-14 | Sms Siemag Aktiengesellschaft | Verfahren zum Längsführen eines Walzgutes, insbesondere eines warmgewalzten Stahlbandes und Warmwalzwerk zur Durchführung des Verfahrens |
| DE102012211454A1 (de) | 2012-07-02 | 2014-01-02 | Sms Siemag Ag | Verfahren und Vorrichtung zur Kühlung von Oberflächen in Gießanlagen, Walzanlagen oder sonstigen Bandprozesslinien |
| DE102012223848A1 (de) | 2012-12-19 | 2014-06-26 | Sms Siemag Ag | Vorrichtung und Verfahren zum Kühlen von Walzgut |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2543750A1 (de) * | 1974-10-04 | 1976-04-15 | Centre Rech Metallurgique | Verfahren und vorrichtung zur verbesserung der qualitaet bei profilstahl |
| ATE15615T1 (de) * | 1981-05-13 | 1985-10-15 | Florin Stahl Walzwerk | Druckkuehlrohr zur direkten intensivkuehlung von walzgut. |
| DD244298B1 (de) * | 1985-12-11 | 1988-02-10 | Florin Stahl Walzwerk | Waermeaustauschteil mit rechteckigem querschnitt fuer ein druckkuehlrohr |
| DE3626741A1 (de) * | 1986-08-07 | 1988-02-18 | Krenn Walter | Kuehlaggregat und verfahren zum abkuehlen walzwarmen walzguts, mit/ohne direktpatentieren, in druckkuehlwasser |
| JPS63101017A (ja) * | 1986-10-15 | 1988-05-06 | Kawasaki Steel Corp | 高温鋼板の冷却装置 |
| DE3708128A1 (de) * | 1987-03-13 | 1988-09-22 | Krenn Walter | Verfahren und druckkuehlaggregat zum gefuehrten abkuehlen geformten, schweren bis leichten, heissen, durchlaufenden produktionsguts aus stahl und metall in druckwasser |
| GB8804962D0 (en) * | 1988-03-02 | 1988-03-30 | Ashlow Eng Ltd | Pressure pipe |
| DE3927276A1 (de) * | 1989-08-18 | 1991-02-21 | Schloemann Siemag Ag | Verfahren zum haerten von stahl mit hilfe fluessiger kuehlmedien |
| DE4009228A1 (de) * | 1990-03-22 | 1991-09-26 | Krenn Walter | Verfahren und druckkuehlaggregat zum gleichzeitig unterschiedlichen abkuehlen ausgewaehlter bereiche durchlaufenden produktionsguts, mit flach- oder profilquerschnitt, aus stahl und anderem |
| DE4429203C2 (de) * | 1994-08-18 | 1997-05-28 | Krenn Walter | Verfahren und Druckkühlaggregat zum Abkühlen eines durchlaufenden Produktionsgut aus Stahl oder anderem |
-
1997
- 1997-05-02 DE DE19718530A patent/DE19718530B4/de not_active Expired - Fee Related
-
1998
- 1998-04-28 AT AT98107703T patent/ATE255965T1/de active
- 1998-04-28 ES ES98107703T patent/ES2212167T3/es not_active Expired - Lifetime
- 1998-04-28 DE DE59810374T patent/DE59810374D1/de not_active Expired - Lifetime
- 1998-04-28 EP EP98107703A patent/EP0875304B1/de not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| DE19718530A1 (de) | 1998-11-12 |
| DE19718530B4 (de) | 2005-02-03 |
| ES2212167T3 (es) | 2004-07-16 |
| EP0875304A3 (de) | 2002-01-02 |
| EP0875304A2 (de) | 1998-11-04 |
| DE59810374D1 (de) | 2004-01-22 |
| ATE255965T1 (de) | 2003-12-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE3127348C2 (de) | Verfahren zum Kühlen eines Gußstrangs in einer Bogenstranggießanlage | |
| DE2805172A1 (de) | Vorrichtung und verfahren zum abkuehlen von metallerzeugnissen | |
| DE60102931T2 (de) | Kühlung eines giessbandes und strangführung beim doppelbandstranggiessen von meatallband | |
| EP1937429A1 (de) | Verfahren und vorrichtung zum stranggiessen | |
| DE10163070A1 (de) | Verfahren und Einrichtung zum kontrollierten Richten und Kühlen von aus einem Warmband-Walzwerk auslaufendem breiten Metallband, insbesondere von Stahlband oder Blech | |
| DE2500079C2 (de) | Vorrichtung zum Kühlen in einer Stranggießanlage | |
| EP0233147B1 (de) | Walzgiessverfahren und Walzgiessanlage zur Durchführung desselben | |
| EP0998993B1 (de) | Verfahren und Vorrichtung zum Kühlen von walzwarmem Walzgut, insbesondere Warmbreitband | |
| EP0875304B1 (de) | Verfahren und Kühlaggregat zum Kühlen von walzwarmem Walzgut, insbesondere von Warmbreitband | |
| DE3435501A1 (de) | Vorrichtung zum kontinuierlichen kuehlen einer erwaermten, waagerecht liegenden metallplatte | |
| DE3537508C2 (de) | ||
| DE2457293A1 (de) | Floatverfahren und vorrichtung zu seiner durchfuehrung | |
| DE102017105614A1 (de) | Verfahren und Kühleinrichtung zum Kühlen eines metallischen Strangs | |
| EP0383786B1 (de) | Vorrichtung zur erzeugung eines wasservorhangs | |
| DE3704599A1 (de) | Verfahren und vorrichtung zur kuehlung von walzband | |
| EP1116534B1 (de) | Verfahren und Vorrichtung zum Verhindern einer unerwünschten Abkühlung der Bandkantenbereiche eines Gussstranges | |
| DE3914218C2 (de) | Verfahren und Vorrichtung zum Abschrecken eines metallischen langgestreckten, zylindrischen Körpers | |
| DE2143962A1 (en) | Cooling and guiding continuously cast bar - avoiding formation of swellings or holes in the bar at high casting rates | |
| AT391880B (de) | Verfahren und druckkuehlaggregat zum gefuehrten abkuehlen geformten, schweren bis leichten, durchlaufenden produktionsgut aus stahl und metall in druckwasser | |
| DE2426828A1 (de) | Vorrichtung zum kuehlen von stangenmaterial | |
| DE19960593C2 (de) | Vorrichtung zum Kühlen eines metallischen Gussstrangs | |
| DE3141269A1 (de) | "kuehlverfahren und kuehlvorrichtung fuer langgestrecktes, heisses metallgut, insbesondere fuer stranggegossene knueppel- bzw. bloomstraenge" | |
| DE3911283A1 (de) | Stranggussanlage mit mitlaufender kokille | |
| DE2426692C3 (de) | Verfahren und Vorrichtung zum Kühlen des sich in einer oszillierenden Kokille bildenden Stranges beim Stranggießen von Stahl | |
| DE3825839A1 (de) | Vorrichtung zum kuehlen und zum hydraulischen transport von unsymmetrischen walzprofilen |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| 17P | Request for examination filed |
Effective date: 19980428 |
|
| AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE Kind code of ref document: A2 Designated state(s): AT BE CH DE DK ES FI FR GB GR IT LI LU NL SE |
|
| AX | Request for extension of the european patent |
Free format text: AL;LT;LV;MK;RO;SI |
|
| RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: SMS DEMAG AG |
|
| PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
| AK | Designated contracting states |
Kind code of ref document: A3 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE |
|
| AX | Request for extension of the european patent |
Free format text: AL;LT;LV;MK;RO;SI |
|
| AKX | Designation fees paid |
Free format text: AT BE CH DE DK ES FI FR GB GR IT LI LU NL SE |
|
| 17Q | First examination report despatched |
Effective date: 20021230 |
|
| GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
| GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
| GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
| AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AT BE CH DE DK ES FI FR GB GR IT LI LU NL SE |
|
| REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D Free format text: NOT ENGLISH |
|
| REG | Reference to a national code |
Ref country code: CH Ref legal event code: EP |
|
| REG | Reference to a national code |
Ref country code: SE Ref legal event code: TRGR |
|
| REG | Reference to a national code |
Ref country code: IE Ref legal event code: FG4D Free format text: GERMAN |
|
| REF | Corresponds to: |
Ref document number: 59810374 Country of ref document: DE Date of ref document: 20040122 Kind code of ref document: P |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20040310 Ref country code: DK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20040310 |
|
| GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) |
Effective date: 20040319 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LU Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20040428 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20040430 Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20040430 |
|
| REG | Reference to a national code |
Ref country code: ES Ref legal event code: FG2A Ref document number: 2212167 Country of ref document: ES Kind code of ref document: T3 |
|
| REG | Reference to a national code |
Ref country code: IE Ref legal event code: FD4D |
|
| ET | Fr: translation filed | ||
| PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
| 26N | No opposition filed |
Effective date: 20040913 |
|
| REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
| REG | Reference to a national code |
Ref country code: DE Ref legal event code: R082 Ref document number: 59810374 Country of ref document: DE Representative=s name: HEMMERICH & KOLLEGEN, DE Ref country code: DE Ref legal event code: R081 Ref document number: 59810374 Country of ref document: DE Owner name: SMS GROUP GMBH, DE Free format text: FORMER OWNER: SMS SIEMAG AKTIENGESELLSCHAFT, 40237 DUESSELDORF, DE |
|
| REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 19 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: NL Payment date: 20160420 Year of fee payment: 19 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FI Payment date: 20160413 Year of fee payment: 19 Ref country code: ES Payment date: 20160413 Year of fee payment: 19 Ref country code: DE Payment date: 20160421 Year of fee payment: 19 Ref country code: GB Payment date: 20160421 Year of fee payment: 19 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: IT Payment date: 20160427 Year of fee payment: 19 Ref country code: FR Payment date: 20160421 Year of fee payment: 19 Ref country code: BE Payment date: 20160420 Year of fee payment: 19 Ref country code: SE Payment date: 20160420 Year of fee payment: 19 Ref country code: AT Payment date: 20160421 Year of fee payment: 19 |
|
| REG | Reference to a national code |
Ref country code: DE Ref legal event code: R119 Ref document number: 59810374 Country of ref document: DE |
|
| REG | Reference to a national code |
Ref country code: NL Ref legal event code: MM Effective date: 20170501 |
|
| REG | Reference to a national code |
Ref country code: AT Ref legal event code: MM01 Ref document number: 255965 Country of ref document: AT Kind code of ref document: T Effective date: 20170428 |
|
| GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20170428 |
|
| REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST Effective date: 20171229 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20171103 Ref country code: NL Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20170501 Ref country code: FI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20170428 Ref country code: AT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20170428 Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20170502 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20170429 Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20170428 |
|
| REG | Reference to a national code |
Ref country code: BE Ref legal event code: MM Effective date: 20170430 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20170428 Ref country code: BE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20170430 |
|
| REG | Reference to a national code |
Ref country code: ES Ref legal event code: FD2A Effective date: 20180625 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: ES Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20170429 |