EP3074150B1 - Procédé de traitement thermique et dispositif de trempe pour refroidir une tôle métallique en forme de plaque ou de bande - Google Patents

Procédé de traitement thermique et dispositif de trempe pour refroidir une tôle métallique en forme de plaque ou de bande Download PDF

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Publication number
EP3074150B1
EP3074150B1 EP14802396.3A EP14802396A EP3074150B1 EP 3074150 B1 EP3074150 B1 EP 3074150B1 EP 14802396 A EP14802396 A EP 14802396A EP 3074150 B1 EP3074150 B1 EP 3074150B1
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EP
European Patent Office
Prior art keywords
sheet
nozzle opening
cooling medium
nozzle
angle
Prior art date
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Application number
EP14802396.3A
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German (de)
English (en)
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EP3074150A1 (fr
Inventor
Bora Özkan
Patrick SAEMANN
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LOI Thermprocess GmbH
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LOI Thermprocess GmbH
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Priority to SI201431170T priority Critical patent/SI3074150T1/sl
Publication of EP3074150A1 publication Critical patent/EP3074150A1/fr
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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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/62—Quenching devices
    • 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

Definitions

  • the invention relates to a quenching device for cooling plate-like or sheet-like metal sheet, with transport means for the continuous transport of the sheet in the direction of passage, each with at least one nozzle body above and below the sheet, wherein the nozzle body at least one connection for introducing the liquid coolant in at least a first nozzle opening, wherein the first nozzle opening is formed as a slot extending transversely to the passage direction and is designed such that the emerging from her coolant jet at a first angle ( ⁇ ) is directed respectively to the top and bottom of the sheet wherein the nozzle body has at least one second nozzle opening or wherein a second nozzle opening is formed in a second nozzle body, wherein the second nozzle opening is formed as a slot extending across the width of the sheet parallel to the first nozzle opening and so is designed such that the emerging from her coolant jet at a second angle ( ⁇ ) is directed respectively to the top and the bottom of the sheet, the first nozzle opening and the second nozzle opening are directed in the direction of passage against each other and in the direction of
  • the invention relates to a method for heat treating plate or sheet-shaped metal sheet, wherein the sheet is heated and then transported by means of transport continuously through a quenching device in the direction of passage and cooled with a liquid coolant, wherein with a nozzle body, each having at least one nozzle opening at least one flat jet formed first coolant jet is generated, which extends transversely to the passage direction and at an angle respectively to the top and the bottom of the sheet metal, which is connected to a terminal for introducing the liquid coolant is directed, wherein at least one formed as a flat jet second coolant jet is generated by means of a slot formed as a second nozzle opening, that the second coolant jet over the width of the sheet parallel to the first coolant jet at a second angle ( ⁇ ) is directed respectively to the top and the bottom of the sheet and that the first coolant jet and the second coolant jet are directed in the direction of passage against each other and have a predefined distance in the direction of passage between them.
  • the JP S59 144513 A and the JP S61 295326 A show similar systems for cooling plate or sheet metal sheet metal.
  • the top and bottom of the sheet are acted upon with cooling water from oppositely directed slit-shaped nozzles.
  • a plate closes the space between the slot-shaped nozzles.
  • the cooling water which is applied in the direction of the sheet width on the top and bottom of the sheet to be held by means of the oppositely directed nozzles to cool both sides of the sheet with the same degree.
  • the cooling system from the JP S61 295326 A are located in addition to the plate in the direction of passage extending baffles for the cooling water.
  • the preamble of claim 1 is based on JP S59 144513 A ,
  • the JP S62 260022 A also shows a cooling system in which the top and bottom of the sheet with cooling water from oppositely directed slot-shaped nozzles are applied.
  • the JP S 63 238918 A shows a cooling system in which a first and a second guide plate forms a flow channel for cooling water, whose cross-section is variable.
  • the sheets to be cooled usually have a thickness of 2mm to 250mm.
  • the sheets which are first heated to Austenitmaschinestemperatur, typically at 850 ° C to 950 ° C, are cooled in practice in a continuous process with a cooling medium, usually water, very quickly to produce a martensitic or bainitic structure.
  • a cooling medium usually water
  • both the top and bottom of the sheets is cooled.
  • the sheets are transported by means of transport, usually rollers, continuously in the direction of passage through the quenching device.
  • the sheet runs between upper and lower rollers, which are arranged in pairs spaced in the direction of passage from each other.
  • nozzle bodies with a slot-shaped nozzle opening are used.
  • the slot-shaped nozzle opening is also called slot nozzle.
  • the nozzle opening may extend over the entire width of the sheet. From practice, it is known to use three over the width of the sheet in series juxtaposed nozzle openings to the sheet over its width with different To deter speed or intensity and / or duration.
  • a device for cooling plate or sheet material by generating a flat jet, which is directed to the material to be cooled is for example from EP 1 420 912 B1 known. Such a device is also called slot nozzle in practice.
  • a nozzle body has a port for introducing a liquid coolant into a nozzle opening from which the cooling medium exits to cool the plate. The nozzle opening is formed between plane-parallel surfaces.
  • the nozzle body is designed in its interior such that the cooling medium does not occur vertically on the sheet, but obliquely at an angle of attack.
  • the cooling water In order to ensure that no water vapor film can form between the still very hot metal sheet and the inflowing water, the cooling water must act on the disc to be quenched with a high exit pulse. Therefore, the cooling water is under increased pressure. A water vapor film would prevent the direct contact of the sheet surface with the cooling water and significantly reduce quenching rates. This phenomenon is known in the art as a Leidenfrost problem and, for example, applies to all quenching operations carried out with the help of water basins.
  • a nozzle opening or slot nozzle or a plurality of nozzle openings or slot nozzles arranged side by side over the width of the sheet is or are required on each side of the sheet. At least one nozzle opening extending across the width of the sheet is directed from above onto the upper side of the sheet and a further nozzle opening is directed onto the sheet on the opposite side from below.
  • Fig. 1 is shown in a schematic representation of a longitudinal section of a quenching device according to the prior art.
  • the water jams because it can not flow off fast enough laterally to the sheet edges.
  • the water which is applied to the underside of the sheet, flows downwards due to gravity. Therefore, the top and bottom are cooled under unequal cooling conditions.
  • the object of the invention is therefore to improve a quenching device and a method of the type mentioned above so that the disadvantages of the prior art are avoided and that sheets, especially plates under the same Abkühltechnikn be cooled from above and below.
  • the object is achieved by a quenching device for cooling plate-like or sheet metal, with transport means for the continuous transport of the sheet in the direction of passage (D), each with at least one nozzle body above and below the sheet, the nozzle body at least one Having a connection for introducing the liquid coolant into at least a first nozzle opening, wherein the first nozzle opening is formed as a slot extending transversely to the passage direction (D) and is designed such that the exiting from her coolant jet at a first angle ( ⁇ ) is directed respectively to the top and the bottom of the sheet, wherein the nozzle body has at least one second nozzle opening or wherein a second nozzle opening is formed in a second nozzle body, wherein the second nozzle opening is formed as a slot over the width of the sheet parallel to the first en nozzle opening and is designed such that the emerging from her coolant jet at a second angle ( ⁇ ) is directed respectively to the top and bottom of the sheet, the first nozzle opening and the second nozzle opening in the direction of passage (
  • the first and the second nozzle openings are directly opposite each other in the passage direction and run parallel across the width of the metal sheet.
  • the impact surface of the two coolant steel is rectangular or linear.
  • the beam width can vary.
  • the invention solves the problem of unequal cooling conditions by two in the direction of passage against each other directed slot-shaped nozzle openings or slot nozzles. Over the width of the sheet, the nozzle openings extend parallel to each other.
  • the invention is based on the finding that the high exit pulse of the second coolant jet, which is directed against the first coolant jet, which also impinges with a high exit pulse on the sheet, prevents the cooling medium from accumulating and then undesirably flows uncontrollably, inter alia in the direction of flow.
  • the high-energy coolant jets which are directed in the direction of passage of the sheet directly against each other, generate on the sheet surface two mutually directed vortex and a double vortex.
  • the guide device By means of the guide device, a preferred direction is impressed on the flow of the water to be removed.
  • the guide device is designed so that the channel-shaped space for the coolant in the direction of the sheet edges has a steadily increasing cross-section, such that the flow velocity of the coolant flowing transversely to the passage direction of the sheet is substantially constant over the width of the sheet. In this way, uniform quenching conditions are achieved over the width of the sheet.
  • the guide is used to prevent water from flowing down.
  • the distance of the guide device to the top and bottom of the sheet is adjustable.
  • the distance of the guide from the top may differ from the distance of the guide from the bottom.
  • a further development of the invention is characterized in that the guide device has at its ends open toward the sheet edges in dependence on the sheet width adjustable guide elements, which are designed such that the flow of the coolant is directed over the sheet edges.
  • the transport of the sheet through the quenching means by means of a roller conveyor, wherein the transport means are formed as a plurality of upper and lower rollers having a distance in the passage direction relative to each other, wherein the distance between the first and the second nozzle opening in the passage direction is smaller as the distances between three rollers adjacent in the direction of passage.
  • the distance A substantially corresponds to the distance between two rollers adjacent in the direction of passage.
  • the nozzle body can be made in two parts depending on the available space, wherein the distance between the two nozzle openings can be varied. Therefore, in the context of the invention, the first nozzle opening in a first nozzle body and the second nozzle opening are formed in a second nozzle body. Each nozzle body has a port for separately introducing the liquid coolant into the first and second nozzle openings.
  • first and the second nozzle opening or the first and the second nozzle body are configured such that the first angle and the second angle are in each case between 10 ° and 45 °, preferably between 20 ° and 30 °.
  • the first and second nozzle openings could be at a corresponding angle to the surface of the sheet.
  • the entire nozzle body could be suspended and tilted about a tilt axis.
  • the first and the second nozzle opening or the first and the second nozzle body are configured such that the first angle and / or the second angle are adjustable.
  • the invention offers the advantageous possibility that the height of the slot formed as the first and the second nozzle opening is adjustable.
  • An advantageous development is characterized in that between the first and the second nozzle opening, at least one support roller acts on the upper side and the lower side of the metal sheet. This prevents the sheet from sagging during quenching. Furthermore, any possible collisions of the sheet with the nozzle are avoided by the support rollers, if the beginning (head) of the sheet is bent due to production up or down.
  • the object is further achieved by a method for heat treating plate or sheet-metal sheet metal, wherein the sheet is heated and then transported by means of transport continuously through a quenching device according to one of claims 1 to 9 in the direction of passage (D) and cooled with a liquid coolant is, with a nozzle body, which is respectively arranged above and below the sheet and which has at least one slot formed as nozzle opening, which is connected to a terminal for introducing the liquid coolant, at least one flat jet formed as a first coolant jet is generated, wherein the first coolant jet extends transversely to the passage direction (D) and is directed at a first angle ( ⁇ ) respectively to the top and the bottom of the sheet, wherein at least one formed as a flat jet second coolant jet by means of a slit n second nozzle opening is generated, that the second coolant jet over the width of the sheet parallel to the first coolant jet at a second angle ( ⁇ ) is directed respectively to the top and the bottom of the sheet and that the first coolant jet and the second coolant
  • the coolant jets emerging from the first and the second nozzle openings form a cooling zone acted upon with coolant between them on the upper side and the lower side of the metal sheet.
  • the predefined distance A thus corresponds to the length of the cooling zone in the direction of passage.
  • the velocity of the coolant jets at the exit from the nozzle orifice in each case substantially corresponds to the impact speed of the coolant jets on the sheet.
  • the coolant jets emerging from the nozzle openings strike the sheet at an angle of attack obliquely.
  • the first angle between the first coolant jet and the surface of the sheet and the second angle between the second coolant steel and the sheet metal surface are each between 10 ° and 45 °, preferably between 20 ° and 30 °. The two angles can be adjusted depending on the respective conditions on site.
  • FIG. 1 schematically shows a quenching device according to the prior art.
  • a first nozzle body 1 has a connection 2.
  • the connection 2 serves to introduce a liquid coolant 3, in this case water, into at least one first nozzle opening 4, which is directed onto the upper side 5 of a metal sheet 6.
  • the upper first nozzle opening 4 is formed as a slot and extends transversely to the passage direction D over the entire width of the sheet 6.
  • the first nozzle opening 4 is designed such that the exiting cooling water jet at an angle ⁇ directed to the top 5 of the sheet 6 is.
  • Transport means 8 in the form of rollers serve for the continuous transport of the sheet 6 in the direction of passage D.
  • Fig. 1 It is shown that the cooling water 3, which is hatched, jams on the upper side 5 of the sheet 6.
  • the water accumulating on the upper side 5 of the sheet 6 flows uncontrollably in all directions, so that it can not be guaranteed that the sheet 6 is uniformly quenched across the width.
  • the cooling water 3, which is applied to the underside 7 of the sheet 6, flows downward, so that the cooling conditions on the top 5 and the bottom 7 of the sheet 6 differ from each other, which adversely affects the heat treatment.
  • FIG. 2 is shown schematically a longitudinal section through a first embodiment of a quenching device according to the invention.
  • a nozzle body 9 has a first nozzle opening 10, which is directed at a first angle ⁇ on the upper side 5 of the sheet 6.
  • a second nozzle opening 11 is directed at a second angle ⁇ on the upper side 5 of the sheet 6.
  • the first nozzle opening 10 and the second nozzle opening 11 are directed in the direction of passage against each other and have a predefined distance A from each other in the direction of passage.
  • transport means 8a, 8b serve in the form of rollers for the continuous transport of the sheet 6 in the direction of passage D.
  • a plurality of upper rollers 8a and lower rollers 8b form a roller conveyor.
  • the rollers have in the direction of passage D a distance R relative to each other.
  • the distance A between the first nozzle openings 10 and the second nozzle opening 11 is smaller than the distance between three adjacent rollers in the direction of passage D and corresponds in the embodiment substantially a distance between two rollers 8a and 8b adjacent in the direction of passage D.
  • the nozzle body 9, which is located above the sheet 6, has a connection 12 for introducing a liquid coolant, in this case water, into the first nozzle opening 10 and the second nozzle opening 11.
  • the connection 12 is connected to a water supply, not shown. With pumps, not shown, the pressure of the water is increased.
  • the first nozzle opening 10 and the second nozzle opening 11 are formed as slots and extend transversely to the passage direction D over the entire width of the sheet 6.
  • the first nozzle opening 10 and the second nozzle opening 11 extend parallel to each other across the width of the sheet.
  • the cooling water jets emerging from the first nozzle opening 10 and the second nozzle opening 11 form between them a cooling zone acted upon by cooling water on the upper side 5 of the sheet 6.
  • the first nozzle opening 10 and the second nozzle opening 11 are configured such that the first angle ⁇ and the second angle ⁇ are between 10 ° and 45 °, preferably between 20 ° and 30 °. Furthermore, the angle ⁇ and the angle ⁇ are adjustable.
  • the height of the slot formed as the first nozzle opening 10 and the second nozzle opening 11 is adjustable.
  • a guide device 13 which channels the coolant.
  • the guide device 13 is spaced from the top 5 and the bottom 7 of the sheet 6.
  • the predefined distance H of the guide from the top 5 and bottom 7 of the plate 6 is adjustable.
  • the guide extends over the width of the sheet at least up to the sheet edges and forms a channel-shaped at the sheet edges open space for the coolant.
  • Fig. 2 is below the sheet 6, a different structural design as shown on the top 5 of the sheet 6. On the bottom 7 but also the construction shown above the sheet 6 could be set up.
  • a first nozzle body 14 is directed with a first nozzle opening 15 against the underside 7 of the sheet 6.
  • a second nozzle body 16 has a second nozzle opening 17.
  • the second nozzle opening 17 is directed against the first nozzle opening 15.
  • the cooling water jets emerging from the first nozzle opening 15 and the second nozzle opening 17 form between them a cooling zone acted upon by cooling water on the underside 7 of the sheet 6.
  • the structure of the lower second nozzle opening 17 corresponds to the upper second nozzle opening 11 and extends like this transversely to the passage direction D and is designed such that the coolant jet emerging from it is directed at an angle ⁇ on the underside 7 of the sheet 6.
  • the first nozzle opening 15 and the second nozzle opening 17, which are directed against the underside of the sheet, are located in separate nozzle bodies 14, 16.
  • the first nozzle opening 15 has a first port 18 and the second nozzle opening 17 has a second port 19 for the separate introduction of the liquid coolant into the first nozzle opening 15 and the second nozzle opening 17.
  • the height of the slot formed as the first nozzle opening 15 and the second nozzle opening 17 is in each case adjustable.
  • the first angle ⁇ and second angle ⁇ , under which the cooling water impinges on the underside 7 of the sheet 6, be between 10 ° and 45 °, preferably between 20 ° and 30 °. Both angles are adjustable.
  • the second nozzle body 14 and the third nozzle body 16 are suspended in a manner not shown and tiltable about a tilt axis.
  • a lower guide 20 Between the first nozzle opening 15 and the second nozzle opening 17 is spaced from the bottom 7 of the sheet, a lower guide 20.
  • the lower guide 20 extends at a distance H spaced from the bottom 7 of the sheet 6 over the width of the sheet 6 at least until to the sheet edges and forms a channel-shaped at the sheet edges open space for the coolant.
  • the distance H of the guide device 20 from the bottom 7 of the plate 6 is adjustable.
  • Fig. 3 shows a schematic representation of a section through the first embodiment of a quenching device Fig. 2 transverse to the direction of passage of the sheet.
  • the guide devices 13, 20 are designed such that the channel-shaped space for the coolant in the direction of the sheet edges has a steadily increasing cross section, such that the flow velocity v of the transverse to the passage direction D of the sheet 6 flowing coolant over the width of the sheet 6 is substantially constant.
  • Fig. 4 shows a schematic representation of a longitudinal section through a second embodiment of the quenching device according to the invention.
  • first nozzle opening 15 and a second nozzle opening 17 in separate nozzle bodies 14, 16 are formed.
  • Between the two oppositely directed nozzle openings 15, 17 is located between two rollers 8, a support roller 21.
  • the directed to the bottom 7 components are not shown, because they are identical to the upper components.
  • the support rollers acting on both sides of the metal sheet 6 prevent the sheet 6 from sagging during quenching or, when a new sheet 6 is being threaded in the case of an upwardly bent metal sheet 6, a collision with the nozzle 16 occurs.
  • Fig. 5 shows a schematic representation of a section through the second embodiment of a quenching device Fig. 4 transverse to the direction of passage of the sheet.
  • Fig. 5 are like at Fig. 4 only the upper components, namely the support roller 21 and the guide 20 are shown. The components which are arranged in mirror image just below the sheet 6 are not shown.
  • Fig. 6 shows a schematic representation of a section through a third embodiment of a quenching device transverse to the direction of passage of the sheet. Only the upper components are shown. Below the sheet 6 are identical components. In the Fig. 6 shown guide device 20 has at its open to the sheet edges ends depending on the sheet width adjustable guide elements 22, 23. The adjustable guide elements 22, 23 are designed such that the flow of the coolant is directed over the sheet edges. The position in which the guide elements 22, 23 can be moved is shown in dashed lines.
  • nozzle openings in the nozzle body at an angle to the vertical axis of the nozzle body.
  • a liquid cooling medium any other suitable cooling medium can be used except water.
  • the guide can be curved.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)

Claims (11)

  1. Dispositif de trempe pour le refroidissement de tôle en forme de plaque ou de bande en métal, avec des moyens de transport pour le transport continu de la tôle dans le sens de passage (D), avec respectivement au moins un corps de buse (1, 9, 14) au-dessus et en dessous de la tôle (6), dans lequel le corps de buse (1, 9, 14) présente au moins un raccord (2, 12, 18) pour l'introduction du moyen de refroidissement liquide dans au moins une première ouverture de buse (10, 15), dans lequel la première ouverture de buse (10, 15) est réalisée en tant que fente, s'étend transversalement au sens de passage (D) et est conçue de telle manière que le jet de moyen de refroidissement sortant de celle-ci soit dirigé selon un premier angle (α) respectivement sur le côté supérieur (5) et le côté inférieur (7) de la tôle (6), dans lequel le corps de buse (9) présente au moins une seconde ouverture de buse (11) ou dans lequel une seconde ouverture de buse (17) est réalisée dans un second corps de buse (16), dans lequel la seconde ouverture de buse (11, 17) est réalisée en tant que fente, s'étend sur la largeur de la tôle (6) parallèlement à la première ouverture de buse (10, 15) et est conçue de telle manière que le jet de moyen de refroidissement sortant de celle-ci soit dirigé selon un second angle (β) respectivement sur le côté supérieur (5) et le côté inférieur (7) de la tôle (6), dans lequel la première ouverture de buse (10, 15) et la seconde ouverture de buse (11, 17) sont dirigées dans le sens de passage (D) l'une contre l'autre et présentent dans le sens de passage (D) entre elles une distance prédéfinie (A), dans lequel un dispositif de conduction (13, 20) pour le moyen de refroidissement se trouve entre la première ouverture de buse (10, 15) et la seconde ouverture de buse (11, 17), dans lequel le dispositif de conduction (13, 20) s'étend sur la largeur de la tôle (6) au moins jusqu'aux arêtes de tôle et présente une distance prédéfinie (H) du côté supérieur (5) et du côté inférieur (7) de la tôle (6) et forme respectivement avec le côté supérieur (5) et le côté inférieur (7) de la tôle (6) un espace ouvert en forme de canal sur les arêtes de tôle pour le moyen de refroidissement,
    caractérisé en ce que le dispositif de conduction (13, 20) est conçu de sorte que l'espace en forme de canal pour le moyen de refroidissement présente en direction des arêtes de tôle une section transversale devenant constamment plus grande de telle manière que la vitesse d'écoulement (v) du moyen de refroidissement s'écoulant transversalement au sens de passage de la tôle (6) sur la largeur de la tôle (6) soit sensiblement constante.
  2. Dispositif de trempe selon la revendication 1,
    caractérisé en ce que la différence (H) entre le dispositif de conduction (13, 20) et le côté supérieur (5) et le côté inférieur (7) de la tôle (6) est réglable.
  3. Dispositif de trempe selon la revendication 1 ou 2,
    caractérisé en ce que le dispositif de conduction (13, 20) présente sur ses extrémités ouvertes vers les arêtes de tôle des éléments de conduction (22, 23) réglables en fonction de la largeur de tôle qui sont conçus de telle manière que l'écoulement du moyen de refroidissement soit dirigé par les arêtes de tôle.
  4. Dispositif de trempe selon l'une quelconque des revendications 1 à 3,
    caractérisé en ce que les moyens de transport sont réalisés en tant que pluralité de rouleaux supérieurs et inférieurs (8), que les rouleaux (8) présentent dans le sens de passage (D) un éloignement (R) les uns par rapport aux autres et que la distance (A) entre la première ouverture de buse (10, 15) et la seconde ouverture de buse (11, 17) est plus petite dans le sens de passage (D) que l'éloignement (R) entre trois rouleaux (8) contigus dans le sens de passage et de préférence correspond sensiblement à l'éloignement (R) entre deux rouleaux (8) contigus dans le sens de passage.
  5. Dispositif de trempe selon l'une quelconque des revendications 1 à 4,
    caractérisé en ce que la première ouverture de buse (15) est réalisée dans un premier corps de buse (14) et la seconde ouverture de buse (17) est réalisée dans un second corps de buse (16) et que chaque corps de buse (14, 16) présente un raccord (18, 19) pour l'introduction séparée du moyen de refroidissement liquide dans la première (15) et la seconde ouverture de buse (17).
  6. Dispositif de trempe selon l'une quelconque des revendications 1 à 5,
    caractérisé en ce que la première ouverture de buse (10, 15) et la seconde ouverture de buse (11, 17) ou le premier corps de buse (14) et le second corps de buse (16) sont configuré(e)s de sorte que le premier angle (α) et le second angle (β) s'élèvent respectivement entre 10° et 45°, de préférence entre 20° et 30°.
  7. Dispositif de trempe selon l'une quelconque des revendications 1 à 6,
    caractérisé en ce que la première ouverture de buse (10, 15) et la seconde ouverture de buse (11, 17) ou le premier corps de buse (14) et le second corps de buse (16) sont configuré(e)s de sorte que le premier angle (α) et/ ou le second angle (β) soit ou soient réglables.
  8. Dispositif de trempe selon l'une quelconque des revendications 1 à 7,
    caractérisé en ce que la hauteur de la première ouverture de buse (10, 11) réalisée en tant que fente et de la seconde ouverture de buse (15, 17) est réglable.
  9. Dispositif de trempe selon l'une quelconque des revendications 3 à 8,
    caractérisé en ce qu'au moins un rouleau d'appui respectif (21) agit sur le côté supérieur (5) et le côté inférieur (7) de la tôle (6) entre la première ouverture de buse (10. 15) et la seconde ouverture de buse (11, 17).
  10. Procédé de traitement thermique de tôle en forme de plaque ou de bande en métal, dans lequel la tôle (6) est chauffée et ensuite transportée avec des moyens de transport en continu par un dispositif de trempe selon l'une quelconque des revendications 1 à 9 dans le sens de passage (D) et refroidie avec un moyen de refroidissement liquide, dans lequel avec un corps de buse (1) qui est agencé respectivement au-dessus et en dessous de la tôle (6) et qui présente au moins une ouverture de buse (4) réalisée en tant que fente, laquelle est raccordée à un raccord (2) pour l'introduction du moyen de refroidissement liquide, au moins un premier jet de moyen de refroidissement réalisé en tant que jet plat est généré, dans lequel le premier jet de moyen de refroidissement s'étend transversalement au sens de passage (D) et est dirigé selon un premier angle (α) respectivement sur le côté supérieur (5) et le côté inférieur (7) de la tôle (6), dans lequel au moins un second jet de moyen de refroidissement réalisé en tant que jet plat est généré au moyen d'une seconde ouverture de buse (11, 17) réalisée en tant que fente, que le second jet de moyen de refroidissement est dirigé sur la largeur de la tôle (6) parallèlement au premier jet de moyen de refroidissement selon un second angle (β) respectivement sur le côté supérieur (5) et le côté inférieur (7) de la tôle (6) et que le premier jet de moyen de refroidissement et le second jet de moyen de refroidissement sont dirigés dans le sens de passage (D) l'un contre l'autre et présentent dans le sens de passage (D) entre eux une distance prédéfinie (A), dans lequel les vitesses du premier et du second jet de moyen de refroidissement s'élèvent entre 5 m/s et 60 m/s, de préférence entre 20 m/s et 35 m/s.
  11. Procédé selon la revendication 10,
    caractérisé en ce que le premier angle (α) et le second angle (β) s'élèvent respectivement entre 10° et 45°, de préférence entre 20° et 30°.
EP14802396.3A 2013-11-25 2014-11-18 Procédé de traitement thermique et dispositif de trempe pour refroidir une tôle métallique en forme de plaque ou de bande Active EP3074150B1 (fr)

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SI201431170T SI3074150T1 (sl) 2013-11-25 2014-11-18 Postopek toplotne obdelave in naprava za gašenje za hlajenje kovinskih plošč ali trakov

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DE102013019619.1A DE102013019619A1 (de) 2013-11-25 2013-11-25 Verfahren zum Wärmebehandeln und Abschreckeinrichtung zum Kühlen von platten- oder bahnförmigem Blech aus Metall
PCT/EP2014/074948 WO2015075041A1 (fr) 2013-11-25 2014-11-18 Procédé de traitement thermique et dispositif de trempe pour refroidir une tôle métallique en forme de plaque ou de bande

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EP2910653A1 (fr) * 2014-02-22 2015-08-26 Josef Stutz Procédé et dispositif de refroidissement de bandes métalliques
WO2017115110A1 (fr) * 2015-12-30 2017-07-06 Arcelormittal Procédé et dispositif de refroidissement d'un substrat métallique
DE102017104550A1 (de) * 2017-03-04 2018-09-06 Loi Thermprocess Gmbh Einrichtung und Verfahren zum Abkühlen eines Flacherzeugnisses
DE102018220319A1 (de) 2018-11-27 2020-05-28 Sms Group Gmbh Kühlvorrichtung und Kühlsystem zum Kühlen eines Kühlguts
DE102019101948A1 (de) 2019-01-25 2020-07-30 Loi Thermprocess Gmbh Einrichtung und Verfahren zum Abkühlen von metallischem Blech
DE102021212523A1 (de) 2021-05-31 2022-12-01 Sms Group Gmbh Forcierte Luftkühlung zur Kühlung von Langstahlerzeugnissen

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EP3074150A1 (fr) 2016-10-05
TR201905438T4 (tr) 2019-05-21
SI3074150T1 (sl) 2019-08-30
WO2015075041A8 (fr) 2015-08-27
DE102013019619A1 (de) 2015-05-28
WO2015075041A1 (fr) 2015-05-28

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