EP3302837A1 - Method for the homogeneous non-contact temperature control of non-endless surfaces which are to be temperature-controlled, and device therefor - Google Patents

Method for the homogeneous non-contact temperature control of non-endless surfaces which are to be temperature-controlled, and device therefor

Info

Publication number
EP3302837A1
EP3302837A1 EP16727320.0A EP16727320A EP3302837A1 EP 3302837 A1 EP3302837 A1 EP 3302837A1 EP 16727320 A EP16727320 A EP 16727320A EP 3302837 A1 EP3302837 A1 EP 3302837A1
Authority
EP
European Patent Office
Prior art keywords
tempering
nozzle
temperature
tempered
edge
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP16727320.0A
Other languages
German (de)
French (fr)
Other versions
EP3302837B1 (en
Inventor
Markus Brummayer
Kurt Etzelsdorfer
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.)
Voestalpine Stahl GmbH
Original Assignee
Voestalpine Stahl 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
Priority claimed from DE102015108514.3A external-priority patent/DE102015108514A1/en
Priority claimed from DE102015113056.4A external-priority patent/DE102015113056B4/en
Application filed by Voestalpine Stahl GmbH filed Critical Voestalpine Stahl GmbH
Publication of EP3302837A1 publication Critical patent/EP3302837A1/en
Application granted granted Critical
Publication of EP3302837B1 publication Critical patent/EP3302837B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • 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
    • B21B45/004—Heating the product
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
    • B21B45/0203—Cooling
    • B21B45/0209—Cooling devices, e.g. using gaseous coolants
    • B21B45/0215—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes
    • B21B45/0233—Spray nozzles, Nozzle headers; Spray systems
    • 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
    • C21D1/56—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering characterised by the quenching agents
    • C21D1/613—Gases; Liquefied or solidified normally gaseous material
    • 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
    • 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
    • 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
    • C21D6/00—Heat treatment of ferrous alloys
    • C21D6/002—Heat treatment of ferrous alloys containing Cr
    • 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
    • C21D6/00—Heat treatment of ferrous alloys
    • C21D6/005—Heat treatment of ferrous alloys containing Mn
    • 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
    • C21D6/00—Heat treatment of ferrous alloys
    • C21D6/008—Heat treatment of ferrous alloys containing Si
    • 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
    • C21D9/0062—Heat-treating apparatus with a cooling or quenching zone
    • 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
    • C21D9/46—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/001—Ferrous alloys, e.g. steel alloys containing N
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/28—Ferrous alloys, e.g. steel alloys containing chromium with titanium or zirconium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/32—Ferrous alloys, e.g. steel alloys containing chromium with boron
    • 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
    • F27D7/00—Forming, maintaining, or circulating atmospheres in heating chambers
    • F27D7/02—Supplying steam, vapour, gases, or liquids
    • 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
    • C21D2211/00—Microstructure comprising significant phases
    • C21D2211/001—Austenite
    • 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
    • C21D2211/00—Microstructure comprising significant phases
    • C21D2211/008—Martensite
    • 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
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0247—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/04—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the coating material
    • C23C2/06—Zinc or cadmium or alloys based thereon
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/34—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the shape of the material to be treated
    • C23C2/36—Elongated material
    • C23C2/40—Plates; Strips
    • 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

Definitions

  • the invention relates to a method for the homogeneous, contactless tempering of surfaces to be tempered, primarily non-continuous surfaces and a device therefor.
  • tempering in many areas are needed, for example, when flat plates must be cooled or heated, but also if z. B. glass surfaces in the glass production or processor units o. ⁇ . Must be cooled or heated.
  • Previous cooling systems are either very expensive, or kept fairly simple, z. B. by the blowing of air or other fluids, especially water or oil, which is disadvantageous in that form on the surface always ungünsti ⁇ ge, uncontrolled flow conditions, which then become a problem when a particular defined Temperie ⁇ tion is required.
  • the object of the invention is reproducible, systematic, homogeneous non-contact tempering of primarily non-continuous hot surfaces to create a defined surface temperature within a few seconds.
  • cooling ⁇ media used are atmospheric gases, mixed gases but also water or other fluids.
  • the heating media used are preferably hot gases.
  • the invention provides a low investment cost with ge ⁇ wrestle operating costs, high system availability, high flexibility and easy integration into existing production processes pro ⁇ should be made possible.
  • this is achieved in that the temperature controlling ⁇ de surface can be moved by means of robots or linear drives in the X, Y or Z plane, wherein any Before ⁇ allowapistra ektorien and velocities of possible surfaces to be cooled.
  • the oscillation around a rest position in the X and Y plane is preferred.
  • the further oscillation in the Z plane ie the height
  • a one- or two-sided cooling is readily possible.
  • the temperature control units according to the invention consist of nozzles which are arranged at a certain distance from each other.
  • the geometry of the nozzles that is, the outlet opening, is quite simple, from simple cylindrical geometries to complex geometrically defined designs.
  • the tempering unit is designed so that the effluent from the hot plate ⁇ de medium finds sufficient space and thus no crossflow on the surface to be cooled arises.
  • the intermediate spaces between the nozzles or nozzle rows can be acted upon by an additional transverse flow in order to increase the tempering rate and thus to virtually suck off the tempering medium which flows out of the hot plate.
  • this crossflow should not affect the inflowing tempering of the nozzle to the plate so the free jet.
  • the flow pattern to be preferred follows on the surface to be cooled of a honeycomb-like structure.
  • the cooling is preferably carried out with at least one cooling bar, wherein the cooling bar is a plate-like or cylindrical element, which can additionally taper from a base to a discharge bar, wherein in the Outlet bar is introduced at least one nozzle.
  • the cooling bar is a plate-like or cylindrical element, which can additionally taper from a base to a discharge bar, wherein in the Outlet bar is introduced at least one nozzle.
  • Sword here is hollow, so that the nozzle can be supplied from the hollow sword out with a tempering fluid.
  • the nozzle (s) may be spaced apart from each other with wedge-like elements, whereby the wedge-like elements may also narrow the space for the flowing fluid to the nozzle.
  • a plurality of swords arranged side by side, wherein the swords are offset from each other.
  • a temperature control likewise takes place with staggered points relative to one another, wherein the points cool homogeneously in one another and the discharged fluid is sucked into and removed from the area between two swords.
  • the element to be tempered z.
  • a to be tempered plate in this case moves so that the movement of the plate on the one hand and the staggered arrangement of the nozzle walls ⁇ hand, ensures that the Temperiertluid flows over all areas of the plate, so that a homogeneous temperature is aimed ER.
  • Figure 1 is a plan view of a plurality of parallel zuei ⁇ Nander arranged Temperierhistern;
  • FIG. 2 shows the arrangement of the tempering blades according to FIG.
  • FIG. 3 shows a longitudinal section through a tempering blade corresponding to the section line CC in FIG. 2;
  • Figure 4 shows the detail enlargement D of Figure 3 showing the nozzles;
  • FIG. 5 shows the arrangement of the tempering blades in a schematic perspective view
  • Figure 6 is an enlarged detail of the edge region of Tempe ⁇ rierthroter with an offset within the
  • Figure 7 is a perspective view of an inventive
  • Temperierthrotern which are summarized in a tempering block
  • FIG 9 is a view of Temperierhistern according to the invention in the interior thereof;
  • Figure 10 indicated the Temperierhister with the nozzles, wherein a plate to be tempered with the temperature ⁇ distribution and the fluid temperature distribution is shown;
  • 11 shows the arrangement of Figure 10, showing the VELOCITY ⁇ speed distribution;
  • FIG. 12 schematically shows the arrangement of two opposing ones
  • the inventive device for tempering 1 has to ⁇ least a Temperierhist 2.
  • the Temperierhist 2 is formed elongate flap-like and has a Tem ⁇ perierhetbasis 3, two extending away from the Temperierhistbasis Temperierhistbreitease 4, two Temperierhetschmaleffect 5, which connect the Temperierhistbreit ⁇ sides , and a free nozzle edge 6.
  • the Temperierhist 2 is hollow sword cavity 7 with a temperature control, wherein the cavity of the Temperierhistbreiticide 4, the TemperierhistSchmalkeep 5 and the nozzle edge is enclosed 6, wherein the tempering ⁇ sword at the base 3 is open.
  • the Temperierhistba- sis 3 With the Temperierhist 3, the Temperierhist is inserted into a Temperierhistrahmen 8, wherein the Temperierhistrahmen 8 can be placed on a hollow Fluidzu Georgiasten.
  • a plurality of nozzles or openings is provided, which extend into the cavity 7 and thus make it possible for fluid to flow out of the cavity outward through the nozzles 10.
  • the nozzle channels 11 extend into the cavity 7, which the nozzles at least in the region of the nozzle edge. 6 spatially separate.
  • the nozzle channels are preferably wedge-shaped in cross section, so that the nozzle channels or nozzles are separated from one another by wedge-shaped webs 12.
  • the nozzle channels are preferably designed so that they expand toward the cavity 7, so that an inflowing fluid is accelerated by the narrowing of the nozzle channels.
  • the Temperierthrotbreittake 4 may be formed converging from the Temperier- sword base 3 to the nozzle edge 6, so that the cavity narrows toward the nozzle edge 6 out.
  • TemperierhetSchmalcharge 5 may be formed converging or diverging.
  • temperrierhistone may be present.
  • the nozzles 10 may, based on the extension of the nozzle edge, also be elongated aligned with the nozzle edge, but the nozzles may also be round, oval in alignment with the nozzle edge or oval transversely to the nozzle edge six, eight or polygonal.
  • H ⁇ 6 x DH, especially 4 to 6 x DH
  • Oscillation half the distance between two tempering blades in X, Y (possibly Z)
  • a device for tempering ( Figure 12) has z. B. two arrangements of Temperierhistern 2 in a Temperierhistrahmen 8, wherein the Temperierhistrahmen 8 are formed with corresponding fluid feeds 14 and in particular on the Temperierhistern 2 side facing away with a fluid box, in the pressurized fluid present is, in particular by the supply of pressurized fluid.
  • a cooling medium which is preferably supplied to a tempering, wherein in a plurality of tempering, preferably the cooling medium the Fluidzu- leading box centrally fed and distributed from there to the tempering ⁇ swords.
  • These gaseous media may be heated to a target temperature outside the tempering device. Such heating is possible, for example, with conventional sausages .
  • the fluids can be heated by direct or indirect heating, in particular by burners, jet pipes, electrical resistance heaters and the like.
  • a board is tempered by means of purely convective heating with a hot with a 1100 ° C gas and a heat transfer coefficient of 200 W / m ⁇ 2 / K.
  • the heating curve (temperature in ° C over time in s) in this purely convective heating is shown in FIG. It can be seen well that rapidly adjusts heating to a temperature above Ac3, so the austenite maschines- temperature which is for example 900 ° C at a manganese-boron steel, and this method therefore at ⁇ play as well for hot forming suitable.
  • a flat board does not have to be used for this purpose, but a correspondingly preformed component can also be heated.
  • only a portion of the board is tempered, i. from room temperature (about 20 ° C) to about Ac3 (about 900 ° C).
  • the board can also be preheated - for example by a roller hearth furnace or other storage ovens. Thereafter, in turn, takes place fully or partially flat Temperie ⁇ tion of the board to over Ac3 by gas heating.
  • Inlet temperature gas 1800 ° C.
  • a movement device 16 is provided, wherein the movement device is designed such that it can lead a body to be tempered between the opposing Temperierhistan extract so that can be acted on both sides cooling on the body to be tempered.
  • the distances of the nozzle edges 6 to be tempered body amount to z. B. 5 to 250 mm.
  • the intermediate spaces can be charged with corresponding flow media with an additional transverse flow. are struck to suck the medium flowing on the body to be tempered medium between the swords.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat Treatment Of Articles (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)
  • Tunnel Furnaces (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
  • Control Of Temperature (AREA)

Abstract

The present invention relates to a device for controlling the temperature of hot objects, in particular a device for the homogeneous, non-contact temperature control of primarily non-endless surfaces, wherein the device for controlling the temperature comprises at least a temperature-control blade or a temperature-control cylinder, wherein the temperature-control blade or temperature-control cylinder has a hollow design and a temperature-control blade nozzle edge or a plurality of serially arranged temperature-control cylinders. At least one nozzle is provided in the nozzle edge, which is directed to an object to be temperature-controlled, wherein at least seven temperature-control blades are arranged in such a manner that the flow image on the surface to be temperature-controlled forms a honeycomb-like structure. The invention also relates to a method therefor.

Description

Verfahren zum homogenen kontaktlosen Temperieren von temperierenden, nicht endlosen Oberflächen und Vorrichtung hierfür  Process for the homogeneous non-contact tempering of tempering, non-continuous surfaces and device therefor
Die Erfindung betrifft ein Verfahren zum homogenen, kontaktlo- sen Temperieren von zu temperierenden, primär nicht endlosen Oberflächen sowie eine Vorrichtung hierfür. The invention relates to a method for the homogeneous, contactless tempering of surfaces to be tempered, primarily non-continuous surfaces and a device therefor.
Im technischen Bereich werden Temperierungen in vielen Bereichen benötigt, beispielsweise wenn ebene Platten gekühlt oder erhitzt werden müssen, aber auch wenn z. B. Glasflächen bei der Glasherstellung oder Prozessoreinheiten o. ä. gekühlt oder erhitzt werden müssen. Bisherige Kühlsysteme sind entweder sehr aufwändig, oder recht einfach gehalten, z. B. durch das Anblasen von Luft oder mit anderen Fluiden, insbesondere Wasser oder Öl, wobei hierbei von Nachteil ist, dass sich an der Oberfläche immer ungünsti¬ ge, unkontrollierte Strömungsbedingungen ausbilden, die dann zum Problem werden, wenn eine besondere definierte Temperie¬ rung erforderlich ist. In the technical field tempering in many areas are needed, for example, when flat plates must be cooled or heated, but also if z. B. glass surfaces in the glass production or processor units o. Ä. Must be cooled or heated. Previous cooling systems are either very expensive, or kept fairly simple, z. B. by the blowing of air or other fluids, especially water or oil, which is disadvantageous in that form on the surface always ungünsti ¬ ge, uncontrolled flow conditions, which then become a problem when a particular defined Temperie ¬ tion is required.
Insgesamt ist im Stand der Technik davon auszugehen, dass ungünstige Strömungsbedingungen auf der zu temperierenden flä- chigen Oberfläche, sogenannter Crossflow, bestehen und diese heterogene Oberflächentemperaturen erzeugen. Dies ist insbesondere dann von Nachteil, wenn im Bereich der Oberfläche zur Erzielung homogener Materialeigenschaften auch homogene Temperaturen notwendig sind. Insbesondere können inhomogene Ober- flächentemperaturen auch zu Verzug führen. Overall, it can be assumed in the prior art that unfavorable flow conditions exist on the surface to be tempered, so-called crossflow, and these generate heterogeneous surface temperatures. This is particularly disadvantageous if homogeneous temperatures are necessary in the region of the surface to achieve homogeneous material properties. In particular, inhomogeneous surface temperatures can also lead to distortion.
Darüber hinaus ist mit herkömmlichen Kühlmethoden ein kontrol- liertes Erreichen einer vorgegebenen Zieltemperatur ebenso we- nig möglich, wie die systematische Einstellung von nahezu be- liebigen Temperierraten bis zu einer maximal erreichbaren Temperierrate . In addition, with conventional cooling methods, a controlled achievement of a predetermined target temperature is just as impossible as the systematic adjustment of almost sweet tempering rates up to a maximum achievable tempering rate.
Besondere Schwierigkeiten bestehen dann, wenn unterschiedliche Materialdicken auf einer Temperierfläche vorhanden sind, wel¬ che auf homogene Temperaturverhältnisse abgekühlt werden sol¬ len . Particular difficulties arise when different material thicknesses are available on a tempering, wel ¬ che be cooled to homogenous temperature conditions sol ¬ len.
Auch das Erhitzen ist im Stand der Technik in gleicher Weise mit Problemen behaftet. Heating also involves problems in the same way in the prior art.
Insbesondere beim Erhitzen von Platten und insbesondere beim Erhitzen von Metallplatten z. B. zum Zwecke des Härtens oder Umformens wird auf diese Platten entweder mit Brennern einge- wirkt, mit elektrischen Widerstandsheizungen oder mit einer direkten Plattenerwärmung. In particular, when heating plates and in particular when heating metal plates z. B. for the purpose of curing or forming is applied to these plates either with burners, with electrical resistance heaters or with a direct plate heating.
Bei all diesen Erhitzungsarten ist von Nachteil, dass diese sehr aufwendig sind oder insbesondere bei unterschiedlichen Dicken zu unterschiedlichen Erwärmungsergebnissen führen. Eine kleine, bereichsweise Steuerung der Erwärmung ist hierdurch nicht möglich. In all these types of heating is disadvantageous that they are very expensive or lead in particular at different thicknesses to different heating results. A small, regional control of the heating is not possible thereby.
Darüber hinaus ist es im Stand der Technik bekannt, ebene Me- tallplatten, insbesondere Stahlplatinen mit unterschiedlichs¬ ten Methoden zunächst vorzuwärmen und eine vollständige oder teilbereichsweise Erwärmung auf eine Temperatur, die eine Här¬ tung erlaubt erst anschließend durchzuführen. Auch bei Erhitzungsmethoden können insbesondere inhomogene Oberflächentemperaturen zu Verzug führen. Moreover, it is known in the prior art, first preheat flat metal plates, especially steel blanks with different ¬ th methods and a complete or partial heating to a temperature that allows a Här ¬ tion only then perform. Even in heating methods inhomogeneous surface temperatures in particular can lead to distortion.
Aufgabe der Erfindung ist es, reproduzierbare, systematische, homogene kontaktfreie Temperierungen von primär nicht endlos heißen Oberflächen auf eine definierte Oberflächentemperatur innerhalb von wenigen Sekunden zu schaffen. The object of the invention is reproducible, systematic, homogeneous non-contact tempering of primarily non-continuous hot surfaces to create a defined surface temperature within a few seconds.
Die Aufgabe wird mit einer Vorrichtung mit den Merkmalen des Anspruch 1 gelöst. The object is achieved with a device having the features of claim 1.
Vorteilhafte Weiterbildungen sind in den hiervon abhängigen Unteransprüchen gekennzeichnet. Advantageous developments are characterized in the dependent claims.
Es ist eine weitere Aufgabe ein Verfahren zum reproduzierba¬ ren, systematischen, homogenen kontaktfreien Temperieren von primär nicht endlos heißen Oberflächen auf eine definierte Oberflächentemperatur innerhalb von wenigen Sekunden zu schaffen . It is a further object to provide a method for reproduzierba ¬ reindeer, systematic, homogeneous-contact tempering primarily not endless hot surfaces to a defined surface temperature within a few seconds.
Die Aufgabe wird mit einem Verfahren mit den Merkmalen des Anspruchs 9 gelöst. The object is achieved by a method having the features of claim 9.
Vorteilhafte Weiterbildungen sind in den hiervon abhängigen Unteransprüchen gekennzeichnet. Advantageous developments are characterized in the dependent claims.
Erfindungsgemäß soll es möglich sein bei Temperaturen von 20 bis 900°C eine Temperierung, d. h. Abkühlung oder Aufheizung zu gewährleisten, die maximal 30 °C Temperaturabweichung innerhalb eines Quadratmeters ermöglicht. Die verwendeten Kühl¬ medien sind Luftgase, Mischgase aber auch Wasser oder andere Fluide. Die verwendeten Erhitzungsmedien vorzugsweise heiße Gase . According to the invention it should be possible at temperatures of 20 to 900 ° C to ensure a temperature, ie cooling or heating, which allows a maximum of 30 ° C temperature deviation within a square meter. The cooling ¬ media used are atmospheric gases, mixed gases but also water or other fluids. The heating media used are preferably hot gases.
Erfindungsgemäß soll ein geringer Investitionsaufwand mit ge¬ ringen Betriebskosten, einer hohen Systemverfügbarkeit, hoher Flexibilität und der einfachen Integration in bestehende Pro¬ duktionsprozesse ermöglicht werden. Erfindungsgemäß gelingt dies dadurch, dass die zu temperieren¬ de Oberfläche mittels Roboter oder Linearantrieben in der X-, Y- oder Z-Ebene bewegt werden kann, wobei eine beliebige Vor¬ gabe der Bewegungstra ektorien und Geschwindigkeiten der zu kühlenden Oberflächen möglich ist. Bevorzugt ist hierbei die Oszillation um eine Ruhelage in der X- und Y-Ebene. Die weite¬ re Oszillation in der Z-Ebene (also der Höhe) ist optional möglich . Ebenso ist eine ein- oder beidseitige Kühlung ohne weiteres möglich . The invention provides a low investment cost with ge ¬ wrestle operating costs, high system availability, high flexibility and easy integration into existing production processes pro ¬ should be made possible. According to the invention this is achieved in that the temperature controlling ¬ de surface can be moved by means of robots or linear drives in the X, Y or Z plane, wherein any Before ¬ allow Bewegungstra ektorien and velocities of possible surfaces to be cooled. In this case, the oscillation around a rest position in the X and Y plane is preferred. The further oscillation in the Z plane (ie the height) is optionally possible. Similarly, a one- or two-sided cooling is readily possible.
Die erfindungsgemäßen Temperiereinheiten bestehen aus Düsen, die in einem bestimmten Abstand zueinander angeordnet sind. Die Geometrie der Düsen, das heißt der Austrittsöffnung, recht von einfachen zylindrischen Geometrien bis hin zu komplexen geometrisch definierten Ausführungen. Die Temperiereinheit ist dabei so ausgeführt, dass das von der heißen Platte abströmen¬ de Medium ausreichend Raum vorfindet und somit kein Crossflow auf der zu kühlenden Oberfläche entsteht. Die Zwischenräume zwischen den Düsen bzw. Düsenreihen können mit einer zusätzlichen Querströmung beaufschlagt werden, um die Temperierrate zu erhöhen und damit das Temperiermedium, das von der heißen Platte abströmt, quasi abzusaugen. Diese Querströmung sollte jedoch nicht das anströmende Temperiermedium von der Düse zur Platte also den Freistrahl beeinträchtigten. The temperature control units according to the invention consist of nozzles which are arranged at a certain distance from each other. The geometry of the nozzles, that is, the outlet opening, is quite simple, from simple cylindrical geometries to complex geometrically defined designs. The tempering unit is designed so that the effluent from the hot plate ¬ de medium finds sufficient space and thus no crossflow on the surface to be cooled arises. The intermediate spaces between the nozzles or nozzle rows can be acted upon by an additional transverse flow in order to increase the tempering rate and thus to virtually suck off the tempering medium which flows out of the hot plate. However, this crossflow should not affect the inflowing tempering of the nozzle to the plate so the free jet.
Erfindungsgemäß folgt das zu bevorzugende Strömungsbild auf der zu kühlenden Oberfläche einer wabenähnlichen Struktur. According to the invention, the flow pattern to be preferred follows on the surface to be cooled of a honeycomb-like structure.
Die Kühlung erfolgt dabei vorzugsweise mit zumindest einem Kühlschwert, wobei das Kühlschwert ein plattenähnliches oder zylindrisches Element ist, welches sich zusätzlich von einer Basis zu einer Ausströmleiste hin verjüngen kann, wobei in der Ausströmleiste mindestens eine Düse eingebracht ist. Das The cooling is preferably carried out with at least one cooling bar, wherein the cooling bar is a plate-like or cylindrical element, which can additionally taper from a base to a discharge bar, wherein in the Outlet bar is introduced at least one nozzle. The
Schwert ist hierbei hohl ausgebildet, sodass die Düse aus dem hohlen Schwert heraus mit einem Temperiertluid versorgt werden kann. Die Düse(n) können voneinander mit keilartigen Elementen räumlich beabstandet sein, wobei die keilartigen Elemente auch den Raum für das strömende Fluid zur Düse hin verengen können. Sword here is hollow, so that the nozzle can be supplied from the hollow sword out with a tempering fluid. The nozzle (s) may be spaced apart from each other with wedge-like elements, whereby the wedge-like elements may also narrow the space for the flowing fluid to the nozzle.
Hierdurch kommt es insbesondere zu einer Verdrehung des aus¬ strömenden Fluidstrahls . This results in particular in a rotation of the out ¬ flowing fluid jet.
Vorzugsweise ist eine Mehrzahl von Schwertern nebeneinander angeordnet, wobei die Schwerter zueinander versetzt sind. Preferably, a plurality of swords arranged side by side, wherein the swords are offset from each other.
Durch die versetzte Anordnung erfolgt eine Temperierung eben- falls mit versetzten Punkten zueinander, wobei die Punkte ineinanderlaufend homogen kühlen und das ausgeströmte Fluid in den Bereich zwischen zwei Schwertern eingesaugt und abgeführt wird . Vorzugsweise wird das zu temperierende Element, z. B. eine zu temperierende Platte, hierbei bewegt, sodass die Bewegung der Platte einerseits und die versetzte Anordnung der Düsen ande¬ rerseits dafür sorgt, dass das Temperiertluid alle Bereiche der Platte überströmt, sodass eine homogene Temperierung er- zielt wird. Due to the staggered arrangement, a temperature control likewise takes place with staggered points relative to one another, wherein the points cool homogeneously in one another and the discharged fluid is sucked into and removed from the area between two swords. Preferably, the element to be tempered, z. As a to be tempered plate, in this case moves so that the movement of the plate on the one hand and the staggered arrangement of the nozzle walls ¬ hand, ensures that the Temperiertluid flows over all areas of the plate, so that a homogeneous temperature is aimed ER.
Die Erfindung wird anhand einer Zeichnung beispielhaft erläu¬ tert. Es zeigen dabei Figur 1 eine Draufsicht auf eine Mehrzahl von parallel zuei¬ nander angeordneten Temperierschwertern; The invention is exemplified erläu ¬ tert reference to a drawing. These show Figure 1 is a plan view of a plurality of parallel zuei ¬ Nander arranged Temperierschwertern;
Figur 2 die Anordnung der Temperierschwerter gemäß des FIG. 2 shows the arrangement of the tempering blades according to FIG
Schnittes A-A in Figur 1 ; Figur 3 einen Längsschnitt durch ein Temperierschwert ent¬ sprechend der Schnittlinie C-C in Figur 2 ; Figur 4 die Detailvergrößerung D aus Figur 3 zeigend die Düsen; Section AA in Figure 1; FIG. 3 shows a longitudinal section through a tempering blade corresponding to the section line CC in FIG. 2; Figure 4 shows the detail enlargement D of Figure 3 showing the nozzles;
Figur 5 die Anordnung der Temperierschwerter in einer schematischen perspektivischen Ansicht; FIG. 5 shows the arrangement of the tempering blades in a schematic perspective view;
Figur 6 eine Detailvergrößerung des Randbereichs der Tempe¬ rierschwerter mit einem Versatz innerhalb der Figure 6 is an enlarged detail of the edge region of Tempe ¬ rierschwerter with an offset within the
Schwertanordnung; Figur 7 eine perspektivische Ansicht einer erfindungsgemäßen  Sword arrangement; Figure 7 is a perspective view of an inventive
Anordnung von Temperierschwertern, welche in einem Temperierblock zusammengefasst sind;  Arrangement of Temperierschwertern, which are summarized in a tempering block;
Figur 8 die Anordnung nach Figur 7 in einer perspektivischen 8 shows the arrangement of Figure 7 in a perspective
Ansicht auf die Rückseite;  View on the back;
Figur 9 eine Ansicht von erfindungsgemäßen Temperierschwertern in deren Innenraum; Figur 10 angedeutet die Temperierschwerter mit den Düsen, wobei eine zu temperierende Platte mit der Temperatur¬ verteilung und der Fluidtemperaturverteilung gezeigt ist ; Figur 11 die Anordnung nach Figur 10, zeigend die Geschwindig¬ keitsVerteilung; Figure 9 is a view of Temperierschwertern according to the invention in the interior thereof; Figure 10 indicated the Temperierschwerter with the nozzles, wherein a plate to be tempered with the temperature ¬ distribution and the fluid temperature distribution is shown; 11 shows the arrangement of Figure 10, showing the VELOCITY ¬ speed distribution;
Figur 12 schematisch die Anordnung zweier gegenüberliegender FIG. 12 schematically shows the arrangement of two opposing ones
Temperierkästen aus einer Mehrzahl von versetzt zuei- nander angeordneten erfindungsgemäßen Temperierschwertern und einem Bewegungsschlitten zum Hindurchbewegen eines zu kühlenden Ob ekts; Figur 13 eine Aufheizkurve erzielt mit einer erfindungsgemäßen Tempering boxes from a plurality of offset added Nander arranged Temperierschwertern and a moving slide for moving past a to be cooled ob ect; Figure 13 shows a heating curve achieved with an inventive
Vorrichtung an einer ebenen Blechplatine zeigend die Blechtemperatur .  Device on a flat metal sheet showing the sheet temperature.
Eine mögliche Ausführungsform wird nachfolgend beschrieben. A possible embodiment will be described below.
Die erfindungsgemäße Vorrichtung zum Temperieren 1 besitzt zu¬ mindest ein Temperierschwert 2. Das Temperierschwert 2 ist lang gestreckt klappenartig ausgebildet und besitzt eine Tem¬ perierschwertbasis 3, zwei sich von der Temperierschwertbasis weg erstreckende Temperierschwertbreitseiten 4, zwei Temperierschwertschmalseiten 5, welche die Temperierschwertbreit¬ seiten verbinden, und eine freie Düsenkante 6. The inventive device for tempering 1 has to ¬ least a Temperierschwert 2. The Temperierschwert 2 is formed elongate flap-like and has a Tem ¬ perierschwertbasis 3, two extending away from the Temperierschwertbasis Temperierschwertbreitseiten 4, two Temperierschwertschmalseiten 5, which connect the Temperierschwertbreit ¬ sides , and a free nozzle edge 6.
Das Temperierschwert 2 ist hohl mit einem Temperier- schwerthohlraum 7 ausgebildet, wobei der Hohlraum von den Temperierschwertbreitseiten 4, den TemperierschwertSchmalseiten 5 und der Düsenkante 6 umschlossen wird, wobei das Temperier¬ schwert an der Basis 3 offen ist. Mit der Temperierschwertba- sis 3 ist das Temperierschwert in einen Temperierschwertrahmen 8 eingesetzt, wobei der Temperierschwertrahmen 8 auf einen hohlen Fluidzuführkasten aufsetzbar ist. The Temperierschwert 2 is hollow sword cavity 7 with a temperature control, wherein the cavity of the Temperierschwertbreitseiten 4, the TemperierschwertSchmalseiten 5 and the nozzle edge is enclosed 6, wherein the tempering ¬ sword at the base 3 is open. With the Temperierschwertba- sis 3, the Temperierschwert is inserted into a Temperierschwertrahmen 8, wherein the Temperierschwertrahmen 8 can be placed on a hollow Fluidzuführkasten.
Im Bereich der Düsenkante 6 ist eine Mehrzahl von Düsen bzw. Öffnungen eigebracht, welche in den Hohlraum 7 reichen und so- mit das Ausströmen von Fluid aus dem Hohlraum nach außen durch die Düsen 10 hindurch ermöglicht. In the region of the nozzle edge 6, a plurality of nozzles or openings is provided, which extend into the cavity 7 and thus make it possible for fluid to flow out of the cavity outward through the nozzles 10.
Von den Düsen erstrecken sich Düsenkanäle 11 in den Hohlraum 7 hinein, welche die Düsen zumindest im Bereich der Düsenkante 6 räumlich voneinander trennen. Die Düsenkanäle sind dabei im Querschnitt vorzugsweise keilförmig ausgebildet, sodass die Düsenkanäle bzw. Düsen durch keilförmige Stege 12 voneinander getrennt sind. Vorzugsweise sind die Düsenkanäle dabei so aus- gebildet, dass sie sich zum Hohlraum 7 hin erweitern, sodass ein einströmendes Fluid durch die Verengung der Düsenkanäle beschleunigt wird. From the nozzle nozzle channels 11 extend into the cavity 7, which the nozzles at least in the region of the nozzle edge. 6 spatially separate. The nozzle channels are preferably wedge-shaped in cross section, so that the nozzle channels or nozzles are separated from one another by wedge-shaped webs 12. In this case, the nozzle channels are preferably designed so that they expand toward the cavity 7, so that an inflowing fluid is accelerated by the narrowing of the nozzle channels.
Die Temperierschwertbreitseiten 4 können von der Temperier- schwertbasis 3 zur Düsenkante 6 hin konvergierend ausgebildet sein, sodass der Hohlraum sich zur Düsenkante 6 hin verengt. The Temperierschwertbreitseiten 4 may be formed converging from the Temperier- sword base 3 to the nozzle edge 6, so that the cavity narrows toward the nozzle edge 6 out.
Zudem können die TemperierschwertSchmalseiten 5 konvergierend oder divergierend ausgebildet sein. In addition, the TemperierschwertSchmalseiten 5 may be formed converging or diverging.
Vorzugsweise sind zumindest zwei Temperierschwerter 2 vorhan¬ den, welche bezüglich der Breitseiten parallel zueinander angeordnet sind, wobei die Temperierschwerter 2 bezüglich des Abstandes der Düsen 10 um einen halben Düsenabstand zueinander versetzt sind. Preferably, at least two Temperierschwerter 2 IN ANY ¬ the, which are arranged parallel to each other with respect to the broad sides, wherein the Temperierschwerter 2 are offset with respect to the distance of the nozzle 10 by half a nozzle distance to each other.
Darüber hinaus können auch mehr als zwei Temperierschwerter 2 vorhanden sein. Die Düsen 10 können, bezogen auf die Erstreckung der Düsenkante, ebenfalls länglich fluchtend zur Düsenkante ausgebildet sein, die Düsen können jedoch auch rund, oval fluchtend zur Düsenkante oder oval quer zur Düsenkante sechs-, acht- oder mehreckig ausgebildet sein. In addition, more than two Temperierschwerter 2 may be present. The nozzles 10 may, based on the extension of the nozzle edge, also be elongated aligned with the nozzle edge, but the nozzles may also be round, oval in alignment with the nozzle edge or oval transversely to the nozzle edge six, eight or polygonal.
Insbesondere wenn die Düsen, bezogen auf die Längserstreckung der Düsenkante, ebenfalls länglich ausgebildet sind, insbeson¬ dere länglich oval oder länglich vieleckig, ergibt sich eine Drehung eines austretenden Fluidstrahls (Figuren 10, 11), wo- bei sich durch eine versetzte Anordnung um einen halben Düsenabstand ein Temperiermuster auf einem plattenartigen Körper ergibt (Figur 10), welche entsprechend versetzt ist. Auch das entsprechende Geschwindigkeitsprofil ergibt eine ent¬ sprechende Verteilung (Figur 11). In particular, when the nozzles with respect to the longitudinal extent of the nozzle edge, are also elongated, insbeson ¬ particular elongate oval or oblong polygonal, results in a rotation of an outgoing fluid jet (10, 11), WO in itself by a staggered arrangement by half a nozzle distance a Temperiermuster on a plate-like body results (Figure 10), which is offset accordingly. And the corresponding velocity profile results in a ent ¬ speaking distribution (Figure 11).
Erfindungsgemäß hat sich herausgestellt, dass aus den Düsen 10 ausströmendes Fluid zwar auf die Oberfläche eines zu temperie- renden Körpers prallt (Figuren 10, 11), jedoch offensichtlich zwischen den zumindest zwei Schwertern der Temperiervorrichtung 1 eintauchend abfließt, sodass die Temperierströmung an der Oberfläche eines zu temperierenden Körpers nicht gestört wird . Although it has been found that fluid flowing out of the nozzles 10 impacts on the surface of a body to be tempered (FIGS. 10, 11), it evidently flows in immersed between the at least two blades of the temperature control device 1, so that the temperature control flow on the surface of a body to be tempered is not disturbed.
Bevorzugt gelten die folgenden Bedingungen: Preferably, the following conditions apply:
Hydraulischer Durchmesser Düse = DH, wobei DH = 4 x A / U Abstand Düse zu Körper = H Hydraulic Diameter Nozzle = DH, where DH = 4 x A / U Distance nozzle to body = H
Abstand zwischen zweiTemperierschwerter/Kühlzylinder = S Distance between two tempering blades / cooling cylinder = S
Länge der Düse = L Length of nozzle = L
L >= 6 x DH L> = 6 x DH
H <= 6 x DH, insb. 4 bis 6 x DH  H <= 6 x DH, especially 4 to 6 x DH
S <= 6 x DH, insb. 4 bis 6 x DH (staggered array) S <= 6 x DH, in particular 4 to 6 x DH (staggered array)
Oszillation = halbe Teilung des Abstand zwischen zwei Temperierschwerter in X, Y (evtl. Z)  Oscillation = half the distance between two tempering blades in X, Y (possibly Z)
Eine Vorrichtung zum Temperieren (Figur 12) besitzt z. B. zwei Anordnungen von Temperierschwertern 2 in einem Temperierschwertrahmen 8, wobei die Temperierschwertrahmen 8 mit entsprechenden Fluidzuführungen 14 und insbesondere auf der den Temperierschwertern 2 abgewandten Seite mit einem Fluidkasten ausgebildet sind, in dem unter Druck stehendes Fluid vorhanden ist, insbesondere durch die Zuführung unter Druck stehendes Fluid. A device for tempering (Figure 12) has z. B. two arrangements of Temperierschwertern 2 in a Temperierschwertrahmen 8, wherein the Temperierschwertrahmen 8 are formed with corresponding fluid feeds 14 and in particular on the Temperierschwertern 2 side facing away with a fluid box, in the pressurized fluid present is, in particular by the supply of pressurized fluid.
Soll die Vorrichtung zum Temperieren einen Körper kühlen wird dementsprechend ein Kühlmedium verwendet, welches vorzugsweise einem Temperierschwert zugeführt, wobei bei einer Mehrzahl von Temperierschwertern vorzugsweise das Kühlmedium dem Fluidzu- führkasten zentral zugeführt und von dort auf die Temperier¬ schwerter verteilt wird. If the device for tempering a body cool a cooling medium is accordingly used, which is preferably supplied to a tempering, wherein in a plurality of tempering, preferably the cooling medium the Fluidzu- leading box centrally fed and distributed from there to the tempering ¬ swords.
Bei der Verwendung der Temperiervorrichtung zum Erhitzen einer entsprechenden Platte oder eines entsprechenden Gegenstandes bietet es sich an, dass die Erhitzung über gasförmige Medien erfolgt . When using the tempering for heating a corresponding plate or a corresponding object, it is advisable that the heating takes place via gaseous media.
Diese gasförmigen Medien können außerhalb der Vorrichtung zum Temperieren entsprechend auf eine Zieltemperatur erhitzt werden. Eine solche Erhitzung ist beispielsweise mit herkömmli¬ chen Winderhitzern möglich. These gaseous media may be heated to a target temperature outside the tempering device. Such heating is possible, for example, with conventional sausages .
Ferner ist es möglich, eine Erhitzung der entsprechenden Fluide in Fluidzuführkasten durchzuführen. Hierbei können die Fluide über eine direkte oder indirekte Beheizung erhitzt werden, insbesondere durch Brenner, Strahlrohre, elektrische Wider- Standsbeheizungen und dergleichen. Further, it is possible to perform heating of the respective fluids in the fluid supply box. In this case, the fluids can be heated by direct or indirect heating, in particular by burners, jet pipes, electrical resistance heaters and the like.
Darüber hinaus ist es auch möglich, die durch Brenner erzeugten heißen Abgase direkt zu verwenden. In diesen Fällen ist es zudem möglich, die entsprechenden Gase vorher oder anschließend entsprechend zu beschleunigen oder unter Druck zu setzen, um ein ausreichendes Ausströmen aus den Düsen zu gewährleisten. In einem ersten Ausführungsbeispiel wird eine Platine mittels rein konvektiver Erwärmung mit einem mit einem 1100°C heißem Gas und einem Wärmeübergangskoeffizienten von 200 W/mÄ2/K temperiert . Moreover, it is also possible to use directly the hot exhaust gases produced by burners. In these cases, it is also possible to accelerate or pressurize the corresponding gases beforehand or subsequently in order to ensure sufficient outflow from the nozzles. In a first embodiment, a board is tempered by means of purely convective heating with a hot with a 1100 ° C gas and a heat transfer coefficient of 200 W / m Ä 2 / K.
Die Aufheizkurve (Temperatur in °C über die Zeit in s) bei dieser rein konvektiver Erwärmung wird in Figur 13 dargestellt. Man erkennt sehr gut, dass sich rasch eine Erwärmung auf eine Temperatur von über Ac3, also der Austenit isierungs- temperatur, welche bei einem Mangan-Bor Stahl beispielsweise 900 °C beträgt einstellt und sich diese Methode daher bei¬ spielsweise auch gut für die Warmumformung eignet. The heating curve (temperature in ° C over time in s) in this purely convective heating is shown in FIG. It can be seen well that rapidly adjusts heating to a temperature above Ac3, so the austenite isierungs- temperature which is for example 900 ° C at a manganese-boron steel, and this method therefore at ¬ play as well for hot forming suitable.
Selbstverständlich muss nicht eine ebene Platine hierfür verwendet werden sondern kann auch ein entsprechend vorgeformtes Bauteil erhitzt werden. Of course, a flat board does not have to be used for this purpose, but a correspondingly preformed component can also be heated.
In einem zweiten Ausführungsbeispiel wird nur ein Teilbereich der Platine temperiert, d.h. von Raumtemperatur (ca. 20 °C) auf über Ac3 (ca. 900°C) erhitzt. In a second embodiment, only a portion of the board is tempered, i. from room temperature (about 20 ° C) to about Ac3 (about 900 ° C).
Vorteilhafterweise werden durch die partielle Austenitisierung nur diese Bereiche gehärtet und andere Bereiche der Platine verbleiben nach einem Warmumformschritt (hier nicht näher beschrieben) weich. Die Einstellung dieser Zone kann - je nach Ausführung der Düsenschwerter - recht exakt eingestellt sein und in diesem Bei¬ spiel bereits Bereiche innerhalb der Platine von mindestens 60 mm x 60 mm auf wenige Millimeter exakt temperieren. Falls Randbereiche der Platine betroffen wären, können diese durch entsprechende Bewegung durch das Düsenfeld noch exakter tempe¬ riert werden wenn Teile der Platine das Düsenfeld eben nicht durchlaufen . In einem dritten Ausführungsbeispiel wird gezeigt, dass die Platine auch vorerwärmt sein kann - beispielsweise durch einen Rollenherdofen oder andere Speicheröfen. Danach erfolgt wiederum die voll- oder teilflächige Temperie¬ rung der Platine auf über Ac3 durch Gaserwärmung. Advantageously, only these areas are hardened by the partial austenitization and other areas of the board remain soft after a hot-forming step (not described in detail here). The setting of this zone can - depending on the design of the nozzle Swords - be fairly accurately set and control the temperature accurately in this case already ¬ play areas within the board of at least 60 mm x 60 mm to a few millimeters. If marginal areas of the board would be affected, they can by corresponding movement through the nozzle field even more accurately tempe ¬ riert be if parts of the board just do not go through the nozzle array. In a third embodiment it is shown that the board can also be preheated - for example by a roller hearth furnace or other storage ovens. Thereafter, in turn, takes place fully or partially flat Temperie ¬ tion of the board to over Ac3 by gas heating.
Einlasstemperatur Gas: 1800 °C. Inlet temperature gas: 1800 ° C.
Starttemperatur für Platine: 500 °C Starting temperature for board: 500 ° C
Endtemperatur Platine: 1200 °C Final temperature board: 1200 ° C
Zeitdauer von 500°C auf 1200 °C: ca. 30 sec Duration from 500 ° C to 1200 ° C: approx. 30 sec
Zeitdauer von 500°C auf 900 °C: ca. 16 sec Time from 500 ° C to 900 ° C: approx. 16 sec
Anordnung: beidseitige Heizung Arrangement: double-sided heating
Zusätzlich ist eine Bewegungsvorrichtung 16 vorhanden, wobei die Bewegungsvorrichtung so ausgebildet ist, dass sie einen zu temperierenden Körper zwischen den gegenüberliegenden Temperierschwertanordnungen so hindurch führen kann, dass auf den zu temperierenden Körper beidseitig kühlend eingewirkt werden kann . In addition, a movement device 16 is provided, wherein the movement device is designed such that it can lead a body to be tempered between the opposing Temperierschwertanordnungen so that can be acted on both sides cooling on the body to be tempered.
Die Abstände der Düsenkanten 6 zum zu temperierenden Körper betragen dabei z. B. 5 bis 250 mm. The distances of the nozzle edges 6 to be tempered body amount to z. B. 5 to 250 mm.
Durch eine Relativbewegung entweder der Vorrichtung zum Tempe- rieren zu einem zu temperierenden Körper oder umgekehrt bewegt sich das Temperiermuster gemäß Figur 10 über die Oberfläche des zu temperierenden Körpers, wobei das von dem heißen Körper abströmende Medium zwischen den Temperierschwertern 2 ausreichend Raum vorfindet um abzuströmen und somit kein Crossflow auf der zu temperierenden Oberfläche entsteht. By a relative movement of either the device for tempering to a body to be tempered or vice versa, the tempering moves according to Figure 10 over the surface of the body to be tempered, wherein the effluent from the hot body medium between the Temperierschwertern 2 finds enough space to flow and thus no crossflow on the surface to be tempered arises.
Erfindungsgemäß können die Zwischenräume mit entsprechenden Strömungsmitteln mit einer zusätzlichen Querströmung beauf- schlagt werden um das auf den zu temperierenden Körper strömende Medium zwischen den Schwertern abzusaugen. According to the invention, the intermediate spaces can be charged with corresponding flow media with an additional transverse flow. are struck to suck the medium flowing on the body to be tempered medium between the swords.
Bei der Erfindung ist von Vorteil, dass eine homogene Tempe- rierung von zu temperierenden Elementen möglich ist, welche kostengünstig ist und eine hohe Variabilität hinsichtlich der Zieltemperatur und möglicher Durchlaufzeiten besitzt. In the invention, it is advantageous that a homogeneous tempering of elements to be tempered is possible, which is inexpensive and has a high variability with regard to the target temperature and possible throughput times.
Bezugs zeichen Reference sign
1 Vorrichtung zum Temperieren1 device for tempering
2 Temperierschwert 2 tempering sword
3 Temperierschwertbasis 3 tempering sword base
4 Temperierschwertbreitseiten 4 temperature control wide sides
5 TemperierschwertSchmalseiten5 Tempering Sword Blanks
6 Düsenkante 6 nozzle edge
7 Hohlraum  7 cavity
8 Temperierschwertrahmen 8 temperature control frame
10 Düsen  10 nozzles
11 Düsenkanäle  11 nozzle channels
12 keilförmige Stege  12 wedge-shaped webs
14 Fluidzuführungen 14 fluid feeds

Claims

Patentansprüche claims
Vorrichtung zum Temperieren von zu temperierenden Gegenständen, insbesondere Vorrichtung zum homogenen, kontaktlosen Temperieren von zu temperierenden primär nicht endlosen Oberflächen, dadurch gekennzeichnet, dass die Vorrichtung zum Temperieren zumindest ein Temperierschwert (2) oder ei¬ nen Temperierzylinder besitzt, wobei das Temperierschwert (2) oder derTemperierzylinder hohl ausgebildet ist und eine Temperierschwertdüsenkante (6) oder eine Mehrzahl von in Reihe angeordneten Temperierzylindern besitzt, wobei in der Düsenkante (6) mindestens eine Düse (10) vorhanden ist, welche zu einem zu temperierenden Objekt gerichtet ist, wo¬ bei mindestens sieben Temperierschwerter derart angeordnet sind, dass das Strömungsbild auf der zu temperierenden Oberfläche eine wabenähnliche Struktur ausbildet. Apparatus for tempering to be tempered objects, in particular apparatus for homogeneous, non-contact tempering to be tempered primarily non-continuous surfaces, characterized in that the device for tempering at least one Temperierschwert (2) or ei ¬ NEN tempering cylinder has, said Temperierschwert (2) or the tempering cylinder is hollow and has a temperature control nozzle edge (6) or a plurality of tempering cylinders arranged in series, wherein in the nozzle edge (6) at least one nozzle (10) is provided, which is directed to an object to be tempered, where ¬ at least seven Temperierschwerter are arranged such that the flow pattern on the surface to be tempered forms a honeycomb-like structure.
Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass eine Mehrzahl von parallel zueinander angeordneten, zueinander beabstandeten Temperierschwertern (2) vorhanden ist. Apparatus according to claim 1, characterized in that a plurality of mutually parallel, mutually spaced Temperierschwertern (2) is present.
Vorrichtung nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, dass die Temperierschwerter (2) jeweils um den halben Abstand zwischen den Düsen (10) an der Düsenkante (6) zueinander versetzt sind. Device according to one of claims 1 or 2, characterized in that the Temperierschwerter (2) each offset by half the distance between the nozzles (10) on the nozzle edge (6) to each other.
Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das oder die TemperierSchwerter (2) eine Temperierschwertbasis (3), Temperierschwert¬ breitseiten (4), TemperierschwertSchmalseiten (5) und je eine Düsenkante (6) besitzen, wobei die Düsenkante (6) so- wie die Temperierschwertbreitseiten (4) und Temperierschwertschmalseiten (5) einen Hohlraum (7) begrenzen, und das oder die Temperierschwerter (2) mit der Temperierschwertbasis (3) in oder auf einem Temperierschwertrahmen (8) aufgesetzt sind, wobei der Temperierschwertrahmen (8) auf einem Fluidkasten (15) zum Zwecke der Fluidzuführung aufsetzbar ist. Device according to one of the preceding claims, characterized in that the tempering or the tempering (2) a Temperierschwertbasis (3), Temperierschwert ¬ broadsides (4), TemperierschwertSchmalseiten (5) and each have a nozzle edge (6), wherein the nozzle edge (6) so- as the Temperierschwertbreitseiten (4) and Temperierschwertschmalseiten (5) define a cavity (7), and the tempering or (2) with the Temperierschwertbasis (3) in or on a Temperierschwertrahmen (8) are placed, wherein the Temperierschwertrahmen (8) a fluid box (15) for the purpose of fluid supply is placed.
Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass eine Bewegungsvorrichtung (16) vorhanden ist, mit der das oder die Temperierschwerter (2) mit dem Temperierschwertrahmen (8) und dem Fluidzuführkas- ten (15) über einen zu temperierenden Körper bewegbar sind oder mit dem der zu temperierende Körper relativ zu den Temperierschwertern (2) bewegbar ist, sodass eine oszillierende Bewegung zueinander ausbildbar ist. Device according to one of the preceding claims, characterized in that a movement device (16) is provided with which the tempering or the tempering (2) with the Temperierschwertrahmen (8) and the Fluidzuführkas- th (15) via a body to be tempered are movable or with which the body to be tempered relative to the Temperierschwertern (2) is movable, so that an oscillating movement is formed to each other.
Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Temperierschwert und/oder der Temperierzylinder bzw. die Vorrichtung zum Temperieren Einrichtungen besitzt, mit denen die Vorrichtung um die X-, Y- oder Z-Achse bewegbar und insbesondere schwingbar oder oszillierend ausgebildet ist. Device according to one of the preceding claims, characterized in that the tempering blade and / or the tempering cylinder or the device for tempering has means with which the device is designed to be movable about the X, Y or Z axis and in particular swingable or oscillating ,
Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die folgenden Bedingungen gelten : Device according to one of the preceding claims, characterized in that the following conditions apply:
Hydraulischer Durchmesser Düse = DH, wobei DH = 4 x A / U Abstand Düse zu Körper = H Hydraulic Diameter Nozzle = DH, where DH = 4 x A / U Distance nozzle to body = H
Abstand zwischen zweiTemperierschwerter/Kühlzylinder = S Länge der Düse = L  Distance between two tempering blades / cooling cylinder = S Length of the nozzle = L
L >= 6 x DH H <= 6 x DH, insb. 4 bis 6 x DH L> = 6 x DH H <= 6 x DH, especially 4 to 6 x DH
S <= 6 x DH, insb. 4 bis 6 x DH (staggered array)  S <= 6 x DH, in particular 4 to 6 x DH (staggered array)
Oszillation = halbe Teilung des Abstand zwischen zwei Temperierschwerter in X, Y (evtl. Z)  Oscillation = half the distance between two tempering blades in X, Y (possibly Z)
Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Einrichtungen zur Bewe¬ gung der Vorrichtung eine Oszillationsgeschwindigkeit von 0,25 Sekunden pro Durchlauf erzeugen. Device according to one of the preceding claims, characterized in that the means for moving ¬ movement of the device generate an oscillation speed of 0.25 seconds per pass.
Verfahren zum Temperieren von zu temperierenden Gegenständen, insbesondere Verfahren zum homogenen, kontaktlosen Temperieren von heißen, primär nicht endlosen Oberflächen, insbesondere unter Verwendung einer Vorrichtung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass eine Temperiervorrichtung (1) und ein Objekt mit einer heißen Oberfläche relativ zueinander bewegt werden, wobei die Temperiervorrichtung (1) um zumindest zwei parallele, beab- standete Temperierschwerter (2) verfügt, wobei die Tempe¬ rierschwerter (2) zum zu temperierenden Objekt hin eine Düsenkante (6) mit Düsen (10) besitzen, wobei ein Temperier- fluid durch die Düsen (10) auf die Oberfläche des zu tempe¬ rierenden Objekts gelenkt wird und das Temperiertluid in den Zwischenraum zwischen den Schwertern (2) nach der Kon- taktierung der heißen Oberfläche abströmt. A method for controlling the temperature of objects to be tempered, in particular a method for homogeneous, non-contact tempering of hot, primarily non-continuous surfaces, in particular using a device according to one of claims 1 to 5, characterized in that a tempering device (1) and an object with a hot surface are relatively moved, wherein the temperature control device (1) has at least two parallel, spaced-finished Temperierschwerter (2), wherein the Tempe ¬ rierschwerter (2) to be temperature controlled object towards a die edge (6) with nozzles (10) own, wherein a temperature control fluid through the nozzle (10) is directed onto the surface of the tempe ¬ centering the object and the Temperiertluid in the space between the swords (2) according to the con- clocking of the hot surface flows.
EP16727320.0A 2015-05-29 2016-05-18 Method for the homogeneous non-contact temperature control of non-endless surfaces which are to be temperature-controlled, and device therefor Active EP3302837B1 (en)

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DE102015113056.4A DE102015113056B4 (en) 2015-08-07 2015-08-07 Method for the contactless cooling of steel sheets and device therefor
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