EP4652004A1 - Dispositif de refroidissement en continu - Google Patents

Dispositif de refroidissement en continu

Info

Publication number
EP4652004A1
EP4652004A1 EP24705941.3A EP24705941A EP4652004A1 EP 4652004 A1 EP4652004 A1 EP 4652004A1 EP 24705941 A EP24705941 A EP 24705941A EP 4652004 A1 EP4652004 A1 EP 4652004A1
Authority
EP
European Patent Office
Prior art keywords
metal strip
transport
cooling device
continuous cooling
strip
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.)
Pending
Application number
EP24705941.3A
Other languages
German (de)
English (en)
Inventor
Robert Ebner
Ulrich PSCHEBEZIN
Manoj Kumar
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ebner Industrieofenbau GmbH
Original Assignee
Ebner Industrieofenbau GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Ebner Industrieofenbau GmbH filed Critical Ebner Industrieofenbau GmbH
Publication of EP4652004A1 publication Critical patent/EP4652004A1/fr
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
    • B22D11/0605—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars formed by two belts, e.g. Hazelett-process
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds
    • B22D11/045—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds for horizontal casting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
    • B22D11/0622—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars formed by two casting wheels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/12—Accessories for subsequent treating or working cast stock in situ
    • B22D11/124—Accessories for subsequent treating or working cast stock in situ for cooling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/12—Accessories for subsequent treating or working cast stock in situ
    • B22D11/124—Accessories for subsequent treating or working cast stock in situ for cooling
    • B22D11/1243—Accessories for subsequent treating or working cast stock in situ for cooling by using cooling grids or cooling plates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/12—Accessories for subsequent treating or working cast stock in situ
    • B22D11/124—Accessories for subsequent treating or working cast stock in situ for cooling
    • B22D11/1246—Nozzles; Spray heads
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G13/00—Roller-ways
    • B65G13/02—Roller-ways having driven rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G15/00—Conveyors having endless load-conveying surfaces, i.e. belts and like continuous members, to which tractive effort is transmitted by means other than endless driving elements of similar configuration
    • B65G15/22—Conveyors having endless load-conveying surfaces, i.e. belts and like continuous members, to which tractive effort is transmitted by means other than endless driving elements of similar configuration comprising a series of co-operating units
    • 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
    • C21D1/673—Quenching devices for die quenching
    • 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
    • C21D1/84—Controlled slow cooling
    • 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
    • C21D9/0006—Details, accessories not peculiar to any of the following furnaces
    • C21D9/0012—Rolls; Roll arrangements
    • 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
    • C21D9/0006—Details, accessories not peculiar to any of the following furnaces
    • C21D9/0018—Details, accessories not peculiar to any of the following furnaces for charging, discharging or manipulation of charge
    • 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
    • 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
    • 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
    • C21D9/5735—Details
    • 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
    • C21D9/63—Continuous furnaces for strip or wire the strip being supported by a cushion of gas
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/12—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity with special arrangements for preheating or cooling the charge
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/14—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment
    • F27B9/20—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path
    • F27B9/24—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path being carried by a conveyor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/14—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment
    • F27B9/20—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path
    • F27B9/24—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path being carried by a conveyor
    • F27B9/2407—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path being carried by a conveyor the conveyor being constituted by rollers (roller hearth furnace)
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/14—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment
    • F27B9/20—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path
    • F27B9/24—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path being carried by a conveyor
    • F27B9/2476—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path being carried by a conveyor the conveyor being constituted by air cushion
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D15/00—Handling or treating discharged material; Supports or receiving chambers therefor
    • F27D15/02—Cooling
    • F27D15/0206—Cooling with means to convey the charge
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D3/02—Skids or tracks for heavy objects
    • F27D3/026—Skids or tracks for heavy objects transport or conveyor rolls for furnaces; roller rails
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D9/00—Cooling of furnaces or of charges therein
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D9/00—Cooling of furnaces or of charges therein
    • F27D2009/007—Cooling of charges therein
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D9/00—Cooling of furnaces or of charges therein
    • F27D2009/007—Cooling of charges therein
    • F27D2009/0081—Cooling of charges therein the cooling medium being a fluid (other than a gas in direct or indirect contact with the charge)
    • F27D2009/0083—Cooling of charges therein the cooling medium being a fluid (other than a gas in direct or indirect contact with the charge) the fluid being water

Definitions

  • the invention relates to a continuous cooling device for cooling a metal strip, with at least one strip cooler which has a plurality of lower discharge elements for a gaseous fluid distributed along a direction of travel of the strip and a plurality of upper discharge elements for a gaseous fluid distributed along the direction of travel of the strip, and with a plurality of liquid cooling units with which the metal strip can be supplied with a cooling liquid.
  • the invention relates to a plant for the heat treatment of a metal strip with at least one strip casting device in which the metal strip is produced from a melt, and optionally with at least one heat treatment device in which the metal strip is heated or through which the metal strip passes heated, and at least one of the continuous cooling devices.
  • the invention also relates to a method for cooling a metal strip in a continuous cooling device, at least one strip cooler, which has a plurality of lower discharge elements for a gaseous fluid distributed along a direction of travel of the strip and a plurality of upper discharge elements for a gaseous fluid distributed along the direction of travel of the strip, and which has a plurality of liquid cooling units with which the metal strip can be supplied with a cooling liquid, wherein the metal strip is exposed to a gaseous fluid, which is directed from the upper and lower discharge elements in the direction of the metal strip, and to a cooling liquid, which is applied to the metal strip emerging from the liquid cooling units, for cooling.
  • DE 10 2016 102 093 B3 describes a continuous cooling device for cooling a metal strip, with at least one strip floating cooler, which has several upper nozzles distributed along the strip running direction and several lower nozzles distributed along the strip running direction, wherein the metal strip can be transported in a floating manner between the upper nozzles and the lower nozzles and both the top and bottom of the strip can be supplied with cooling air, and with several water cooling units, with which the metal strip can be supplied with cooling water, and which are integrated into the strip floating cooler by having in several intermediate areas between each At least one water cooling unit is arranged in each of two lower nozzles or upper nozzles arranged directly one behind the other in the direction of strip travel.
  • WO 2018/162474 A1 describes a belt suspension system for the suspended guidance of a belt-shaped material, which comprises a first nozzle system and a second nozzle system, wherein the first nozzle system is arranged relative to the second nozzle system such that the belt-shaped material can be guided between the first nozzle system and the second nozzle system.
  • the nozzle systems comprise a nozzle body which has a front edge region along a conveying direction of the strip-shaped material and a rear edge region lying opposite it, a front gas nozzle arrangement which is arranged on the front edge region such that a front gas jet can flow in the direction of the strip running plane to form a floating nozzle field for the strip-shaped material, a rear gas nozzle arrangement which is arranged on the rear edge region such that a rear gas jet can flow in the direction of the strip running plane to form the floating nozzle field for the strip-shaped material, a nozzle arrangement which is arranged in front of the front gas nozzle arrangement and/or behind the rear gas nozzle arrangement in the conveying direction, wherein the nozzle arrangement is set up such that a liquid fluid in a fluid jet can flow into the floating nozzle field in the direction of the strip running plane to temper the strip-shaped material.
  • the present invention is based on the object of improving the handling of a metal strip in a warm or hot state.
  • the object of the invention is achieved with the initially mentioned continuous cooling, in which at least one transport device with at least one transport element for (temporary) transport of the metal strip is arranged between the upper and lower discharge elements.
  • the object is achieved with the method mentioned at the beginning, according to which it is provided that a free initial section of the metal strip is placed on a transport element of a transport device which is arranged between the upper and lower discharge elements, and is conveyed with the transport element through the continuous cooling device that with or after leaving the free initial section, the flow rate of gaseous fluid is increased so that the metal strip is brought into a state of suspension within the continuous cooling device.
  • the advantage here is that the transport device can improve the strip feed into the continuous cooling device.
  • it is possible to achieve a stable state in the strip and the process more safely and quickly, since the levitation of the metal strip is only activated when the free end section has already left the continuous cooling device.
  • the contact-based transport of the free initial section of the metal strip makes it possible to reduce the tensile stress applied to this section when it is warm or hot, which can reduce its influence on the metal strip.
  • the transport device can have several transport modules that are arranged one behind the other in the direction of travel of the belt.
  • the modular design of the transport device makes it easier to adapt to different continuous cooling devices.
  • the transport modules can each have at least one transport element, which can improve the ability of the transport system and thus also the continuous cooling device to adapt to the progress of the treatment of the metal strip. In particular, it is easier to switch to floating transport of the metal strip in some areas of the continuous cooling device at an early stage. It is also possible to provide different transport elements or generally different transport modules in the continuous cooling device, adapted to the progress of the cooling of the metal strip or to the temperature of the metal strip during cooling.
  • the transport element can be formed by ropes or belts or a mesh fabric or a perforated conveyor belt, which allows the gaseous fluid and/or the cooling fluid to flow through the transport element, so that the transport element can remain in the area between the upper and lower discharge elements for the gaseous fluid.
  • the transport element is arranged on rollers or cylinders in order to be able to influence the temperature load of the transport element via the heat dissipation by means of the rollers or cylinders. If necessary, the rollers or cylinders can be designed to be cooled if required.
  • the rollers or cylinders have a coating by means of which the force transmission from the rollers or cylinders to the transport element or elements can be better defined.
  • At least the transport element of the transport device can be adjusted in height.
  • the transport element can be lowered during the formation of the floating state of the metal strip. This also makes it possible to influence an intended form of floating of the metal strip, such as a flat or sinusoidal or wavy floating of the metal strip, at an earlier stage during the changeover.
  • the transport modules are height-adjustable independently of one another, whereby the lowering can be carried out only in sections or in stages, etc., if necessary.
  • the transport elements of the transport modules are height-adjustable independently of one another.
  • the liquid cooling units can be arranged between discharge elements for a gaseous fluid, whereby cooling liquid can be blown off the metal strip with the gaseous fluid. This can create an improved cooling line across the width of the strip and enable targeted liquid removal from the strip surface.
  • liquid cooling units are arranged within the transport modules.
  • the continuous cooling device can be arranged immediately after the strip casting device. This can provide a relatively large cooling gradient window for gas cooling or gas-liquid cooling, which means that a wide variety of metals can be processed with the system.
  • the continuous cooling device can be used to transport the metal strip without contact after the strip run-in phase, which can ensure that the surface of the metal strip is free of damage.
  • Fig. 1 shows a section of a plant for producing a metal strip
  • Fig. 2 a continuous flow cooling device
  • Fig. 3 shows a detail of a variant of a transport element in plan view
  • Fig. 4 shows a detail of another embodiment of a transport element in plan view
  • Fig. 5 shows a variant of a transport device.
  • Fig. 1 shows a schematic section of a system 1 for producing a metal strip 2.
  • the metal strip 2 consists in particular of a non-ferrous metal or a non-ferrous metal alloy, such as aluminum or a non-ferrous metal.
  • the metal strip 2 can also consist of an iron-based material, such as steel.
  • the system 1 (also referred to as a “continuous casting line”) comprises a strip casting device 3 and a continuous cooling device 4 (also referred to as a strip floating cooler).
  • the continuous cooling device 4 is preferably provided for the horizontal passage of the metal strip 2.
  • the metal strip is produced from a melt.
  • the strip casting device 3 can be designed according to the state of the art, so that further details can be found in the relevant state of the art.
  • the strip casting device 3 can be a so-called belt caster, a twin roll caster, etc.
  • the strip casting device 3 is in particular a continuously operated casting device.
  • the continuous cooling device 4 is arranged downstream of the strip casting device 3 in a production direction 5.
  • the continuous cooling device 4 is described in more detail below.
  • the system 1 can have further units or components, such as a heat treatment device 6 in which the metal strip 2 is heated or through which the metal strip 2 passes in a heated state. Since these further units of the system 1 can also correspond to the state of the art, they will not be discussed further to avoid repetition.
  • the heat treatment device 6 can be arranged behind the continuous cooling device 4 or before it in the production direction 5 of the metal strip 2. In the preferred embodiment, however, the continuous cooling device 4 can be arranged after the strip casting device 3 in the production direction 5 of the metal strip 2, in particular immediately after it, as is intended to be made clear by the dashed line in Fig. 1.
  • the continuous cooling device 4 can therefore be arranged at the outlet of the metal strip 1 from the strip casting device 3, so that the metal strip 2, which has already at least partially solidified, can enter the continuous cooling device 5 directly.
  • the continuous cooling device 4 for cooling a metal strip 2 can be seen better from Fig. 2, which schematically shows the continuous cooling device 4 in a side view.
  • the continuous cooling device 4 has at least one belt cooler 7.
  • the continuous cooling device 4 can also have several belt coolers 7, for example two or three or four belt coolers 7 arranged one behind the other and/or next to each other. If the If the continuous cooling device 4 has several belt coolers 7, these are preferably designed in the same way. Therefore, only one belt cooler 7 will be discussed in more detail below. The explanations can be transferred to other belt coolers 7 of the continuous cooling device 4 if required.
  • the belt cooler 7 has a plurality of lower discharge elements 9 for a gaseous fluid arranged one behind the other along a direction of passage 8 of the metal belt 2 through the continuous cooling device 4 and a plurality of upper discharge elements 10 for a gaseous fluid arranged one behind the other along the direction of passage 8 of the metal belt 2.
  • the lower discharge elements 9 are arranged at a distance from one another. Likewise, the discharge elements
  • the lower discharge elements 9 are arranged at a distance from the upper discharge elements 10, so that the metal strip 2 can be conveyed between the lower and upper discharge elements 9, 10 through the continuous cooling device 4.
  • Euft is mainly used as the gaseous fluid, but another gas can also be used.
  • the lower and upper discharge elements 9, 10 for the gaseous fluid can be designed according to the prior art.
  • they can have a housing 11 which forms or contains a supply channel for the gaseous fluid.
  • On the housing 11 which forms or contains a supply channel for the gaseous fluid.
  • one or more nozzles can be arranged or designed for the outflow of the gaseous fluid. This makes it possible to achieve high heat transfer (high heat transfer coefficient).
  • the nozzle(s) is/are arranged or aligned in particular such that the escaping gas flow is directed onto the metal strip 2.
  • the nozzle(s) can have slot-like outlets so that the nozzle(s) is/are bar-shaped.
  • the housing 11 or the nozzle(s) preferably extend over the entire width of the metal strip 2. If there are several nozzles, these can be arranged in relation to one another such that the metal strip 2 can be exposed to a gas flow over its entire width.
  • a blower or a fan can be provided, which is connected to the lower and upper discharge elements 9, 10 flow s.
  • Several blowers or a Fan may be provided.
  • the lower and upper discharge elements 9, 10 can be supplied with the gaseous fluid independently of one another or together.
  • the belt cooler 7 also has several liquid cooling units 12.
  • the liquid cooling units 12 can be used to apply a cooling liquid to the metal belt 2. With these liquid cooling units 12, an improved, i.e. more homogeneous, cooling can be achieved. In particular, a more homogeneous cooling line (linear cooling area) can be achieved transversely to the direction of flow 8.
  • Water can be used as a cooling liquid. However, other liquids can also be used as cooling liquid.
  • the liquid cooling units 12 can be designed in accordance with the prior art. For example, they can have a housing 13 that forms or contains a supply channel for the cooling liquid.
  • One or more nozzles for the outflow of the cooling liquid can be arranged or designed on the housing 13, for example as flat jet nozzles, full cone nozzles, atomizer nozzles or hollow cone nozzles.
  • the nozzle(s) is/are in particular arranged or aligned in such a way that the escaping liquid flow is directed onto the metal strip 2.
  • the nozzle(s) can have slot-like outlets so that the nozzle(s) is/are bar-shaped.
  • the housing 11 or the nozzle(s) preferably extends/extend over the entire width of the metal strip 2.
  • nozzles can be arranged in relation to one another in such a way that the metal strip 2 can be exposed to a gas flow over its entire width.
  • the nozzles can be arranged or formed in one or more rows on the housing 13, which extend in the direction of the width of the metal strip 2.
  • one or more pumps can be provided which are fluidly connected to the nozzle(s).
  • the nozzles can be supplied with the cooling liquid independently of one another or together.
  • Liquid cooling units 12 can be arranged between the lower discharge elements 9 and between the upper discharge elements 10. They can be arranged only between the lower discharge elements 9 or only between the upper discharge elements 10. Between the liquid cooling units 12, one or more lower or upper Discharge elements 9, 10 can be arranged.
  • the representation chosen in Fig. 2 is therefore not to be understood as limiting the scope of the invention.
  • the lower and upper discharge elements 9, 10 and the liquid cooling units 14 are arranged in the continuous cooling device 4 such that they do not touch the metal strip 2 during operation of the continuous cooling device 4.
  • Appropriate control valves can be provided to control the lower and upper discharge elements 9, 10 and/or the liquid cooling units 12.
  • the continuous cooling device 4 has, between the upper and lower discharge elements 9, 8, at least one transport device 14 with at least one transport element 15 for temporarily transporting the metal strip 2.
  • the transport device 14 is constructed in a modular manner and has three transport modules 16.
  • the transport device 14 can also have fewer or more than three transport modules 16, for example two or four or five, etc., so that the transport device 14 can be adapted to different catches of the continuous cooling device 4.
  • the transport device 14 can also extend continuously through the continuous cooling device 4 or a section of the continuous cooling device 4 and have only a single transport element 15 that extends continuously over the entire length of the continuous cooling device 4 or the said section of the continuous cooling device 4.
  • the transport modules 16 of the transport device 15 are arranged one behind the other in the direction of passage 8 of the metal strip 2. However, it is also possible, alternatively or additionally, for several transport modules 16 to be arranged next to one another in the continuous cooling device 4, i.e. transversely (in particular at right angles) to the direction of passage 8 of the metal strip 2.
  • the transport modules 16 can be assigned one or more lower discharge elements 9 for a gaseous fluid and one or more liquid cooling units 12.
  • each of the transport modules 16 of the embodiment variant of the continuous cooling device 4 shown in Fig. 2 has two lower discharge elements 9 and one liquid cooling unit 12.
  • this number is not intended to limit the scope of the invention.
  • More than two lower discharge elements 9 for a gaseous fluid, for example three or four, etc., and/or more than one liquid cooling unit 12, for example two or three, etc., can also be provided per transport module 16.
  • the number of liquid cooling units 12 per transport module 16 is smaller than the number of lower discharge elements 9 for a gaseous fluid.
  • each of the transport modules 16 or at least several of the transport modules 16 preferably has its own transport element 15. However, it is also possible for several transport modules 16 to share a common transport element 15.
  • the at least one transport element at least temporarily supports the support and transport of the metal strip 2 through the continuous cooling device 4, in particular at the beginning, i.e. during the strip run-in phase.
  • this initial section has left the continuous cooling device 4 again and in particular a stable process state has been established, i.e. when the strip is already wound into a coil under tension, the strip is conveyed through the continuous cooling device 4 floating on the gaseous fluid.
  • the transport element is formed by ropes or belts or a mesh fabric or a perforated conveyor belt.
  • Figs. 3 and 4 show sections of a transport element 15 in the form of a “perforated belt” with openings 17 in Fig. 3 and in the form of a mesh fabric in Fig. 4.
  • the transport element can be formed by a continuous belt (i.e. a belt without openings 17) which extends over at least 50%, for example at least 80%, of the total width of the metal strip 2 transversely to the direction of travel 8.
  • the number, size and shape of the openings 17 may vary.
  • the openings 17 may be round, square, generally polygonal. It is also possible that the transport element
  • ropes and/or several belts arranged next to one another are used, these individual elements are arranged at a distance from one another, so that the openings 17 are formed due to the spacing between the ropes and/or belts.
  • the distance between the ropes and/or belts and their number can be selected accordingly depending on the design of the continuous cooling device 4 or the metal belt 2. For example, between two and twenty ropes and/or belts can be arranged in the continuous cooling device 4 as transport elements 15 for the metal belt 2.
  • the transport element 15 or the transport elements 15 can consist of a metal or metal composite material, such as metal-mineral fiber composite, in particular with glass fibers, or metal composite with ceramic particles, etc.
  • rollers 18 or rolls or generally rotatable or rotatably mounted support elements are provided for guiding the transport element 15 or the transport elements 15.
  • rollers 18 or rolls are provided at the corners at which the respective transport element 15 is deflected, as can be seen from Fig. 2.
  • more than these rollers 18 or rolls can generally be provided in the deflection areas, particularly if the transport element 15 covers longer distances between these deflection areas, in which further support of the transport element 15 is advantageous.
  • At least one of the rollers 18 or rollers (per transport module 16) can be driven if necessary.
  • the support (and guidance) of at least one transport element 15 can also be carried out with other, possibly driven, support elements.
  • the support elements for example the rollers 18 or rolls, to have a surface profile in order to transmit a driving force to the transport element(s) 15.
  • the surface profile can be a toothing, for example.
  • the transport element(s) 15 can be attached to the support elements facing side also have a surface profiling, for example a toothing, which interacts with the surface profiling of the Ab support elements.
  • the transport element 15 or the transport elements 15 can optionally be provided with a separate cooling system, for example cooled from below (the side on which the metal strip 2 is not resting) with a liquid or gaseous cooling medium. In the version with the rollers 18, these can be cooled and thus transfer the cooling effect to the transport element(s) 15.
  • a separate cooling system for example cooled from below (the side on which the metal strip 2 is not resting) with a liquid or gaseous cooling medium.
  • these can be cooled and thus transfer the cooling effect to the transport element(s) 15.
  • rollers or cylinders 18 have a coating 19, as is indicated by dashed lines on the left lower roller 18 in Fig. 2.
  • the coating 19 can be a friction-reducing coating 19 in order to reduce the friction between the rollers 18 and the transport element 15.
  • the coating can be formed by Al2O3, for which purpose the rollers 18 can be anodized, for example.
  • the coating 19 can also be a friction-increasing coating 19 in order to increase the friction between the rollers 18 and the transport element 15 and to improve the power transmission between the roller 18 and the transport element 15 or between the roller and the transport element 15. For example, ??.
  • rollers 18 or rolls with different coatings 19 can also be provided.
  • both rollers 18 or rolls with a friction-reducing coating 19 and rollers 18 or rolls with a friction-increasing coating 19 can be arranged.
  • the transport of the metal strip 2 through the continuous cooling device 4 is preferably changed to a floating motion of the metal strip 2.
  • at least the transport element 15 of the transport device 14 or the transport modules 16 is height-adjustable.
  • at least the upper support elements, for example rollers 18, can be arranged or held in a holder 20, for example a holding frame, so that they can be lowered. as is indicated in Fig. 5. In this case, when it is lowered, the (respective) transport element 15 can lose its connection to the lower support elements.
  • the entire transport module 16 or the entire transport device 14 can be designed to be lowerable, as is indicated in Fig. 2 with the right transport module 16 in broken lines.
  • a guide rail can be provided, for example, in which the corresponding elements of the transport device 14 are held/guided so that they can be lowered.
  • a corresponding drive or drives such as at least one electric motor, a hydraulic or pneumatic actuator, etc., can be provided.
  • the transport modules 16 it is possible for the transport modules 16 to be height-adjustable independently of one another, so that the changeover from contact conveying of the metal strip 2 to floating conveying can be carried out step by step or in sections. In general, this allows a demand-oriented contact conveying of the metal strip 2 with at least one transport element 15.
  • corresponding sensors and/or a control or regulating device can be provided in/on the continuous cooling device 4. The sensors can be used, for example, to determine the position of the metal strip 2 within the continuous cooling device 4.
  • a method for cooling a metal strip 2 can be carried out in a continuous cooling device 4, wherein the continuous cooling device 4 has at least one belt cooler 7 which has a plurality of lower discharge elements 9 for a gaseous fluid distributed along a direction of flow 8 of the metal strip 2 and a plurality of upper discharge elements 10 for a gaseous fluid distributed along the direction of flow 8 of the metal strip 2, and which has a plurality of liquid cooling units 12 with which the metal strip 2 can be supplied with a cooling liquid, wherein the metal strip 2 is exposed during cooling to a gaseous fluid which is directed from the upper and lower discharge elements 9, 10 in the direction of the metal strip, and to a cooling liquid which is applied to the metal strip 2 emerging from the liquid cooling units 12.
  • a free initial section of the metal strip 2 is placed on at least one transport element 15 of the transport device 14, which is arranged between the upper and lower discharge elements 9, 10, and is conveyed by the transport element 15 through the continuous cooling device 4.
  • the The delivery rate of gaseous fluid or the volume flow of gaseous fluid is increased, so that the metal strip 2 is brought into a floating state within the continuous cooling device.
  • at least the transport element 15 of the transport device 14 can be lowered.
  • the increase in the volume flow of gaseous fluid can be achieved by increasing the speeds of the above-mentioned fans (which can be designed as circulation fans, for example) or blowers.
  • the suspension conveying can be converted back into the contact-guided conveying state by reversing these processes.
  • the embodiments show or describe possible design variants of the system 1 or the continuous cooling device 4, whereby combinations of the individual design variants are also possible.

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  • 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)
  • General Engineering & Computer Science (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)

Abstract

L'invention concerne un dispositif de refroidissement en continu (4) conçu pour refroidir une bande métallique (2), comprenant au moins un refroidisseur de bande (7) qui présente plusieurs éléments de sortie inférieurs (9) pour un fluide gazeux, répartis le long d'une direction de passage (8) de la bande métallique (2), et plusieurs éléments de sortie supérieurs (10) pour un fluide gazeux, répartis le long de la direction de passage (8) de la bande métallique (2), et plusieurs unités de refroidissement à liquide (12), avec lesquelles la bande métallique (2) peut être alimentée en liquide de refroidissement, au moins un dispositif de transport (14) comportant au moins un élément de transport (15) étant disposé entre les éléments de sortie supérieurs et inférieurs (9, 10) pour le transport de la bande métallique (2).
EP24705941.3A 2023-01-16 2024-01-16 Dispositif de refroidissement en continu Pending EP4652004A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ATA50018/2023A AT526905B1 (de) 2023-01-16 2023-01-16 Durchlaufkühlvorrichtung
PCT/AT2024/060008 WO2024152070A1 (fr) 2023-01-16 2024-01-16 Dispositif de refroidissement en continu

Publications (1)

Publication Number Publication Date
EP4652004A1 true EP4652004A1 (fr) 2025-11-26

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP24705941.3A Pending EP4652004A1 (fr) 2023-01-16 2024-01-16 Dispositif de refroidissement en continu

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EP (1) EP4652004A1 (fr)
CN (1) CN120641232A (fr)
AT (1) AT526905B1 (fr)
WO (1) WO2024152070A1 (fr)

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1193176A (fr) * 1982-07-06 1985-09-10 Robert J. Ackert Methode de production de rails de chemin de fer de meilleure qualite par refroidissement accelere a la sortie du laminoir
JPH07252535A (ja) * 1994-03-15 1995-10-03 Daido Steel Co Ltd 金属ストリップの熱処理炉及び熱処理方法
JP2695394B2 (ja) * 1995-04-11 1997-12-24 中外炉工業株式会社 連続熱処理炉の操炉方法
DE19649073C2 (de) * 1996-11-28 2000-12-07 Carl Kramer Vorrichtung zur Abkühlung von Strangpreßprofilen
JP3900844B2 (ja) * 2000-03-01 2007-04-04 Ｊｆｅスチール株式会社 熱延鋼帯の冷却装置と、その冷却方法および熱延鋼帯の製造方法
JP4518117B2 (ja) * 2006-08-21 2010-08-04 Ｊｆｅスチール株式会社 熱延鋼帯の冷却装置および冷却方法
CN105567921B (zh) * 2016-02-01 2017-06-16 中国重型机械研究院股份公司 一种三段式铝型材淬火冷却装置和冷却方法
DE102016102093B3 (de) 2016-02-05 2017-06-14 Bwg Bergwerk- Und Walzwerk-Maschinenbau Gmbh Durchlaufkühlvorrichtung und Verfahren zum Abkühlen eines Metallbandes
DE102017104909A1 (de) 2017-03-08 2018-09-13 Ebner Industrieofenbau Gmbh Bandschwebeanlage mit einem Düsensystem
US10900098B2 (en) * 2017-07-04 2021-01-26 Daido Steel Co., Ltd. Thermal treatment furnace
WO2022110167A1 (fr) * 2020-11-30 2022-06-02 苏州中门子工业炉科技有限公司 Appareil de traitement thermique de mise en solution continue intégré à un coussin d'air et à un rouleau et procédé pour rouleau de bande d'aluminium

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AT526905A1 (de) 2024-08-15
AT526905B1 (de) 2024-12-15
CN120641232A (zh) 2025-09-12
WO2024152070A1 (fr) 2024-07-25

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