EP3538677B1 - Temperature control station for partially thermally treating a metal component - Google Patents

Temperature control station for partially thermally treating a metal component Download PDF

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Publication number
EP3538677B1
EP3538677B1 EP17804826.0A EP17804826A EP3538677B1 EP 3538677 B1 EP3538677 B1 EP 3538677B1 EP 17804826 A EP17804826 A EP 17804826A EP 3538677 B1 EP3538677 B1 EP 3538677B1
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EP
European Patent Office
Prior art keywords
nozzle
control station
component
area
temperature
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.)
Active
Application number
EP17804826.0A
Other languages
German (de)
French (fr)
Other versions
EP3538677A1 (en
Inventor
Frank WILDEN
Jörg Winkel
Andreas Reinartz
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.)
Schwartz GmbH
Original Assignee
Schwartz GmbH
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Filing date
Publication date
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Priority to PL17804826T priority Critical patent/PL3538677T3/en
Publication of EP3538677A1 publication Critical patent/EP3538677A1/en
Application granted granted Critical
Publication of EP3538677B1 publication Critical patent/EP3538677B1/en
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Classifications

    • 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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/18—Hardening; Quenching with or without subsequent tempering
    • 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
    • C21D1/34—Methods of heating
    • 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
    • C21D11/00—Process control or regulation for heat treatments
    • C21D11/005—Process control or regulation for heat treatments for 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
    • 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
    • C21D8/0294—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips involving a localised treatment
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D15/00—Handling or treating discharged material; Supports or receiving chambers therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D15/00—Handling or treating discharged material; Supports or receiving chambers therefor
    • F27D15/02—Cooling
    • 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
    • C21D2221/00—Treating localised areas of an article
    • 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
    • C21D2221/00—Treating localised areas of an article
    • C21D2221/01—End parts (e.g. leading, trailing end)
    • 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
    • C21D2221/00—Treating localised areas of an article
    • C21D2221/02—Edge parts
    • 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
    • C21D2221/00—Treating localised areas of an article
    • C21D2221/10—Differential treatment of inner with respect to outer regions, e.g. core and periphery, respectively
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/12—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity with special arrangements for preheating or cooling the charge
    • F27B2009/124—Cooling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/12—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity with special arrangements for preheating or cooling the charge
    • F27B2009/124—Cooling
    • F27B2009/126—Cooling involving the circulation of cooling gases, e.g. air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/12—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity with special arrangements for preheating or cooling the charge
    • F27B2009/124—Cooling
    • F27B2009/126—Cooling involving the circulation of cooling gases, e.g. air
    • F27B2009/128—Cooling involving the circulation of cooling gases, e.g. air the gases being further utilised as oxidants in the burners
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D9/00—Cooling of furnaces or of charges therein
    • F27D2009/007—Cooling of charges therein
    • F27D2009/0089—Quenching

Definitions

  • the invention relates to a temperature control station for the partial heat treatment of a metallic component and to a device for the heat treatment of a metallic component.
  • the invention is used in particular in the partial hardening of possibly precoated components made of a high-strength manganese-boron steel.
  • the upper and / or lower end area of the B-pillar should have a comparatively low strength in order to be able to absorb deformation energy during a side impact and / or, for example, allow softer areas to be easily connected to other body components during assembly of the B-pillar.
  • the hardened component In order to form such a partially hardened body component, it is necessary for the hardened component to have different material structures or strength properties in the partial areas.
  • the steel sheet to be hardened can already be provided with different sheet metal sections connected to one another, or it can be partially cooled differently in the press.
  • a temperature control station and a device for heat treatment of a metallic component are to be specified, which allow a sufficiently reliable thermal delimitation of heat treatment measures partially acting on the component and / or a sufficiently reliable thermal separation of different heat treatment measures partially acting on the component.
  • a temperature control station for the partial heat treatment of a metallic component with a processing level arranged in the temperature control station in which the component can be arranged, at least one nozzle which is oriented towards the processing level and for discharging a fluid flow is provided and set up for cooling at least a first portion of the component and at least one nozzle box, which is located above the Machining plane is arranged, the at least one nozzle box forming at least one nozzle area in which the at least one nozzle can at least partially be arranged and / or which at least partially limits the spread of the fluid flow, the at least one nozzle box being at least partially formed with a ceramic material
  • the metallic component is preferably a metallic blank, a sheet steel or an at least partially preformed semi-finished product.
  • the metallic component is preferably made with or made of a (hardenable) steel, for example a boron (manganese) steel, e.g. B. with the designation 22MnB5 formed.
  • the metallic component is at least for the most part provided with a (metallic) coating or precoated.
  • the metallic coating can be, for example, a (primarily) zinc-containing coating or a (primarily) aluminum and / or silicon-containing coating, in particular a so-called aluminum / silicon (Al / Si) coating.
  • the temperature control station is preferably arranged downstream of a first furnace and / or upstream of a second furnace.
  • a processing plane in which the component can be or is arranged is arranged in the temperature control station.
  • the processing level here refers in particular to the level into which the component can be brought for treatment in the temperature control station and / or in which the component is arranged and / or fixed during the treatment in the temperature control station.
  • the working plane is preferably aligned essentially horizontally.
  • the component can preferably be arranged or arranged in the machining plane and oriented or aligned relative to the nozzle box.
  • the component, when it is arranged in the processing station is preferably oriented relative to the nozzle box.
  • the temperature control station has at least one nozzle.
  • the nozzle is oriented towards the working plane.
  • the nozzle for discharging a fluid flow for cooling at least a first sub-area of the component is provided and set up, in particular so that a temperature difference between the at least one first (more ductile in the finished component) sub-area and at least one second (in the finished treated component) is compared harder) part of the component is adjustable.
  • a plurality of nozzles is preferably provided, the nozzles particularly preferably being arranged in a nozzle field. If a plurality of nozzles is provided, the nozzle box can form a separate nozzle area for each nozzle and / or form a common nozzle area for several or all nozzles from the plurality of nozzles.
  • the (each) nozzle is preferably shaped in the manner of a flat jet nozzle and / or a round nozzle.
  • the temperature control station has at least one nozzle box which is arranged above the processing level.
  • the nozzle box can be designed in the manner of a frame, a box and / or a housing, in which recesses and / or spaces can be provided in which nozzles and / or heat sources can be received.
  • the nozzle box is formed, in particular shaped, in such a way that it can at least partially (thermally) separate, delimit and / or shield at least one nozzle area from the environment and / or from at least one heating area.
  • the nozzle box preferably has a (horizontal) width which is, in particular, at least one and a half times greater than a (vertical) height of the nozzle box.
  • the nozzle box preferably has an (outer) contour, in particular at a lower end or on the underside, which is shaped essentially corresponding to or analogously to an outer contour of a component (to be treated).
  • the at least one nozzle box forms at least one nozzle area.
  • a plurality of nozzle areas can preferably be formed.
  • the at least one nozzle area is preferably formed or shaped by the nozzle box in such a way that it can at least partially accommodate at least one nozzle.
  • the nozzle box can have one or more walls and / or wall sections which at least partially surround the nozzle area and / or delimit or delimit it from the surroundings and / or from at least one heating area.
  • the nozzle box preferably has at least one (inner) wall which completely surrounds a nozzle area when viewed in a cross section aligned parallel to the processing plane.
  • the at least one nozzle can be or is at least partially arranged in the at least one nozzle area.
  • the at least one nozzle protrudes at least partially into the nozzle area or is even arranged completely in the nozzle area.
  • the nozzle area is formed in such a way that the nozzle area at least partially limits the spread of the fluid flow. This advantageously enables a fluid flow discharged to the component by means of the at least one nozzle to be directed to the at least one first partial area of the component, in particular also when the nozzle does not protrude into the nozzle area or is arranged in it.
  • the nozzle area or an (inner) wall of the nozzle box which forms the nozzle area preferably limits the spread of the fluid flow in a lateral and / or horizontal direction.
  • the at least one nozzle box is at least partially formed with or from a ceramic material.
  • At least one wall and / or at least one wall section of the nozzle box is preferably formed with or from the ceramic material, the particularly preferably at least one nozzle area of at least one heating area (thermally and / or spatially) separates.
  • the ceramic material is preferably sintered.
  • a temperature control station for the partial heat treatment of a metallic component with a processing level arranged in the temperature control station in which the component can be arranged, at least one nozzle which is oriented towards the processing level and for discharging a fluid flow for cooling at least a first Sub-area of the component is provided and set up, at least one heat source which is provided and set up to introduce thermal energy into at least a second sub-area of the component and at least one nozzle box that is arranged above the processing plane, the at least one nozzle box forming at least one nozzle area, in which the at least one nozzle can at least partially be arranged and / or which at least partially limits a spread of the fluid flow, the at least one nozzle box having at least one heating area separate from the at least one nozzle area I forms in which the heat source can at least partially be arranged and / or which at least partially limits the spread of thermal energy.
  • the at least one heat source is at least one radiant heat source.
  • the heat source is preferably an actively operable, in particular electrically operable or energizable heat source.
  • the heat source is particularly preferably formed with an electrically operated heating element (which does not physically or electrically contact the component).
  • the heating element can be a heating loop and / or a heating wire.
  • the heat source can be formed with a (gas-heated) radiant tube.
  • the at least one heating area is formed by the nozzle box.
  • the at least one heating area is preferably in this way from the nozzle box formed or shaped so that it can at least partially absorb at least one heat source.
  • the nozzle box can have one or more walls and / or wall sections which at least partially surround the heating area and / or delimit or delimit it from the surroundings and / or from at least one nozzle area.
  • the nozzle box preferably has at least one (inner) wall which completely surrounds a heating area when viewed in a cross section aligned parallel to the processing plane.
  • the at least one heat source can be or is at least partially arranged in the at least one heating area.
  • the at least one heat source preferably protrudes at least partially into the heating area or is even arranged completely in the heating area.
  • the heating area is formed in such a way that the heating area at least partially limits the spread of thermal energy. This advantageously enables thermal energy discharged or radiated to the component to be directed to the at least one second sub-area of the component by means of the at least one heat source, in particular even when the heat source does not protrude into the heating area or is located in it .
  • the heating area or an (inner) wall of the nozzle box forming the heating area limits a spread of the thermal energy in a lateral and / or horizontal direction. If the heat source is formed with a radiant heat source that can in particular be operated electrically or gas-heated, laterally radiating heat radiation can be deflected or reflected, for example, from an inner wall of the heating area to the second sub-area of the component.
  • the at least one nozzle box is formed at least partially with or from a fiber-reinforced ceramic material.
  • Aluminum oxide fibers for example, can be used here as fibers.
  • the at least one nozzle box or at least one wall and / or at least one wall section of the nozzle box is preferably formed at least partially with or from an aluminum oxide ceramic reinforced with (fine) fibers of aluminum oxide.
  • the at least one nozzle box is formed at least partially with or from an aluminum oxide ceramic.
  • At least one wall and / or at least one wall section of the nozzle box is preferably formed at least partially with or from an aluminum oxide ceramic. (Almost) all walls and / or wall sections of the nozzle box are particularly preferably formed with or from an aluminum oxide ceramic reinforced in particular with (fine) fibers made of aluminum oxide.
  • a nozzle field with a plurality of nozzles is arranged at least partially in at least one nozzle area.
  • the shape of the nozzle field and / or the arrangement of the plurality of nozzles is preferably adapted to the (to be achieved) geometry of the at least one first partial area of the component.
  • the at least one nozzle area is shaped in such a way that it spans an area of the working plane in which the at least one first partial area of the component can be arranged.
  • a cross section of the nozzle area aligned parallel to the processing plane preferably has a shape or geometry which corresponds to the (to be achieved) shape or geometry of the first partial area of the component.
  • the at least one heating area is preferably shaped in such a way that it spans an area of the processing plane in which the at least one second partial area of the component can be arranged.
  • a cross-section of the heating area aligned parallel to the processing plane has a shape or geometry that corresponds to the (to be achieved) shape or geometry of the second partial area of the component.
  • the at least one nozzle area can be arranged at a specific (lateral and / or horizontal) position in or on the nozzle box, which corresponds to, in particular overlaps, a (lateral and / or horizontal) position of the at least one first partial area in the component. as soon as the component is arranged in the processing plane and / or aligned with respect to the nozzle box.
  • the at least one heating area can be arranged at a specific (lateral and / or horizontal) position in or on the nozzle box, which corresponds to a (lateral and / or horizontal) position of the at least one second partial area in the component, in particular overlaps as soon as the component is arranged in the processing plane and / or aligned with respect to the nozzle box.
  • the at least one nozzle box is at least partially double-walled and / or at least partially has an insulating material.
  • the nozzle box is preferably in the area of the at least one heating area or at least partially formed double-walled around the at least one heating area and / or (thermally) insulated.
  • the insulating material is in particular formed with or from a microporous insulating material.
  • the insulating material is preferably arranged between walls and / or wall sections of the nozzle box, which form a double-walled section of the nozzle box.
  • the insulating material is preferably temperature-resistant for temperatures above 1073.15 K.
  • the first furnace or the second furnace is a continuous furnace or a chamber furnace.
  • the first furnace is preferably a continuous furnace, in particular a roller hearth furnace.
  • the second furnace is particularly preferably a continuous furnace, in particular a roller hearth furnace, or a chamber furnace, in particular a multi-layer chamber furnace with at least two chambers arranged one above the other.
  • the second furnace preferably has a furnace interior which can in particular (exclusively) be heated by means of radiant heat, in which an almost uniform internal temperature can preferably be set.
  • the second furnace is designed as a multi-layer chamber furnace, several such furnace interiors can be present, depending on the number of chambers.
  • Radiant heat sources are preferably arranged in the first oven and / or in the second oven.
  • at least one electrically operated heating element (which does not contact the component), such as at least one electrically operated heating loop and / or at least one electrically operated heating wire, is arranged in an oven interior of the first oven and / or in an oven interior of the second oven.
  • at least one, in particular gas-heated, radiant tube can be arranged in the oven interior of the first oven and / or the oven interior of the second oven.
  • a plurality of radiant tube gas burners or radiant tubes, into each of which at least one gas burner burns, are arranged in the furnace interior of the first furnace and / or the furnace interior of the second furnace.
  • a use of a nozzle box formed at least partially with a ceramic material is proposed in a temperature control station, the nozzle box being used for the partial heat treatment of a metallic component.
  • Fig. 1 shows a schematic representation of a temperature control station 1 for the partial heat treatment of a metallic component 2.
  • a machining plane 3 is arranged in which the component 2 lies.
  • the temperature control station 1 has, for example, a nozzle 4 which is oriented towards the processing plane 3 and is provided and set up for discharging a fluid stream 5 for cooling at least a first partial area 6 of the component 2.
  • the temperature control station 1 has, for example, a heat source 9 which is provided and set up to introduce thermal energy into at least one second partial area 10 of the component 2.
  • the heat source 9 is formed here, for example, in the form of a heating wire that can be energized.
  • the temperature control station 1 has a nozzle box 7 which is arranged above the processing level 3.
  • the nozzle box 7 here forms a nozzle area 8 in which the nozzle 4 is at least partially arranged.
  • the nozzle box 7 simulates as shown Fig. 1 a heating area 11 which is separate from the nozzle area 8 and in which the heat source 9 is at least partially arranged.
  • Fig. 1 is the nozzle box 7 with or the walls 18 of the nozzle box 7 are formed from a ceramic material.
  • a fiber-reinforced aluminum oxide ceramic is used here as an example of the ceramic material.
  • the nozzle box 7 is double-walled around the heating area 11 and has an insulating material 13 between the walls 18, which form the double-walled section of the nozzle box 7.
  • the nozzle area 8 is shaped in such a way that it spans an area of the processing plane 3 in which the first partial area 6 of the component 2 is arranged as soon as the component 2 is arranged in the processing plane 3 and aligned with the nozzle box 7.
  • the heating area 11 is shaped such that it spans an area of the processing plane 3 in which the second partial area 10 of the component 2 is arranged.
  • a cross section of the nozzle region 8 that is perpendicular to the plane of the drawing and parallel to the processing plane 3 has a shape that corresponds to the shape (to be achieved) or the geometry of the first partial area 6 corresponds.
  • a cross-section of the heating region 11 that is oriented perpendicular to the plane of the drawing and parallel to the processing plane 3 has a shape which corresponds to the shape or geometry (to be achieved) of the second partial region 10.
  • the nozzle area 8 and the heating area 11 are (thermally) separated from one another by means of the nozzle box, so that the component 2 can be impressed with a temperature profile with differently tempered partial areas that are as precisely as possible delimited from one another. Because a significant temperature difference is set between the first sub-area 6 and the second sub-area 10 in the first sub-area 6 as a result of the cooling by means of the nozzle 4, after hardening in a press hardening tool (not shown here) downstream of the temperature control station 1, the Subareas 6, 10 set different material structures and / or strength properties, it being possible for a more ductile structure and / or a lower hardness to set in the cooled first subarea 6 than in the second subarea 10.
  • Fig. 2 shows a schematic representation of a further temperature control station 1 for the partial heat treatment of a metallic component 2. Since the reference symbols are used uniformly, only the differences from that in FIG Fig. 1 discussed temperature control station. In addition, on the explanations too Fig. 1 which are fully incorporated herein by reference. A first difference is that here two nozzles 4 are shown, which are arranged to form a nozzle field 12.
  • Fig. 2 exemplarily illustrates that the nozzle area 8 can also be formed in such a way that it at least partially limits the spread of the fluid flow 5, here for example laterally, without the nozzle (s) themselves having to be arranged in the nozzle area 8.
  • the heating range is analogous 11 is formed here by the nozzle box 7 by way of example in such a way that it at least partially limits the spread of thermal energy, here by way of example laterally.
  • thermal radiation which in Fig. 2 is indicated by dotted lines, are reflected on the inner walls 18 of the heating area 11.
  • Fig. 3 shows a perspective view of a nozzle box 7 shown in section, which can be used in a temperature control station according to the invention (not shown here).
  • the nozzle box 7 here forms, for example, a plurality of nozzle regions 8 in which nozzles (not shown here) can be arranged and / or can blow into the nozzles.
  • the nozzle box 7 forms several heating areas 11 in which one or more heat sources (not shown here) can be arranged.
  • the nozzle areas 8 are separated from the heating areas 11 by means of the walls 18 of the nozzle box 7 and by means of insulating material 13.
  • Fig. 4 shows a schematic representation of a device 14 according to the invention for heat treatment of a metallic component 2.
  • the device 14 has a heatable first furnace 15, a temperature control station 1 (directly) downstream of the first furnace 15, and a heatable second furnace 16 (directly) downstream of the temperature control station 1 and a press hardening tool 17 arranged (directly) downstream of the second furnace 16.
  • the device 14 here represents a hot forming line for (partial) press hardening.
  • a temperature control station and a device for heat treatment of a metallic component are specified here, which at least partially solve the problems described with reference to the prior art.
  • the temperature control station and the device allow a sufficiently reliable thermal delimitation of heat treatment measures partially acting on the component and / or a sufficiently reliable thermal separation of different heat treatment measures partially affecting the component.

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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)
  • General Engineering & Computer Science (AREA)
  • Heat Treatment Of Articles (AREA)
  • Furnace Details (AREA)

Description

Die Erfindung betrifft eine Temperierstation zur partiellen Wärmebehandlung eines metallischen Bauteils sowie eine Vorrichtung zur Wärmebehandlung eines metallischen Bauteils. Die Erfindung findet insbesondere Anwendung beim partiellen Härten von gegebenenfalls vorbeschichteten Bauteilen aus einem hochfesten Mangan-Bor-Stahl.The invention relates to a temperature control station for the partial heat treatment of a metallic component and to a device for the heat treatment of a metallic component. The invention is used in particular in the partial hardening of possibly precoated components made of a high-strength manganese-boron steel.

Zur Herstellung sicherheitsrelevanter Fahrzeug-Karosseriebauteile aus Stahlblech ist es regelmäßig erforderlich das Stahlblech während oder nach der Umformung zu dem Karosseriebauteil zu härten. Hierzu hat sich ein Wärmebehandlungsverfahren etabliert, das als "Presshärten" bezeichnet wird. Dabei wird das Stahlblech, das regelmäßig in der Form einer Platine bereitgestellt wird zunächst in einem Ofen aufgeheizt und anschließend während der Umformung in einer Presse abgekühlt und dadurch gehärtet.To manufacture safety-relevant vehicle body components from sheet steel, it is regularly necessary to harden the sheet steel during or after the deformation to form the body component. For this purpose, a heat treatment process has been established that is referred to as "press hardening". The steel sheet, which is regularly provided in the form of a blank, is first heated in an oven and then cooled in a press during the forming process and thereby hardened.

Seit einigen Jahren besteht nun das Bestreben mittels des Presshärtens Karosseriebauteile von Kraftfahrzeugen, wie z. B. A- und B-Säulen, Seitenaufprallschutzträger in Türen, Schweller, Rahmenteile, Stoßstangenfänger, Querträger für Boden und Dach, vordere und hintere Längsträger, bereitzustellen, die in Teilbereichen unterschiedliche Festigkeiten aufweisen, sodass das Karosseriebauteil partiell unterschiedliche Funktionen erfüllen kann. So soll zum Beispiel der mittlere Bereich einer B-Säule eines Fahrzeugs eine hohe Festigkeit aufweisen, um die Insassen im Falle eines Seitenaufpralls zu schützen. Gleichzeitig sollen der obere und/oder untere Endbereich der B-Säule eine vergleichsweise geringe Festigkeit aufweisen, um Verformungsenergie während eines Seitenaufpralls aufnehmen zu können und/oder beispielsweise weichere Bereiche während der Montage der B-Säule eine einfache Verbindbarkeit mit anderen Karosseriebauteilen ermöglichen.For some years now there has been an effort by means of press hardening body components of motor vehicles, such as. B. A- and B-pillars, side impact protection beams in doors, sills, frame parts, bumper guards, cross members for floor and roof, front and rear side members, which have different strengths in some areas, so that the body component can partially fulfill different functions. For example, the central area of a B-pillar of a vehicle should have a high degree of strength in order to protect the occupants in the event of a side impact. At the same time, the upper and / or lower end area of the B-pillar should have a comparatively low strength in order to be able to absorb deformation energy during a side impact and / or, for example, allow softer areas to be easily connected to other body components during assembly of the B-pillar.

Zur Ausbildung eines solchen partiell gehärteten Karosseriebauteils ist es erforderlich, dass das gehärtete Bauteil in den Teilbereichen unterschiedliche Materialgefüge beziehungsweise Festigkeitseigenschaften aufweist. Zur Einstellung unterschiedlicher Materialgefüge beziehungsweise Festigkeitseigenschaften nach dem Härten kann beispielsweise das zu härtende Stahlblech bereits mit unterschiedlichen, miteinander verbundenen Blechabschnitten bereitgestellt oder in der Presse partiell unterschiedlich abgekühlt werden.In order to form such a partially hardened body component, it is necessary for the hardened component to have different material structures or strength properties in the partial areas. To set different material structures or strength properties after hardening, for example, the steel sheet to be hardened can already be provided with different sheet metal sections connected to one another, or it can be partially cooled differently in the press.

Alternativ oder zusätzlich besteht die Möglichkeit, das zu härtende Stahlblech vor dem Abkühlen und Umformen in der Presse partiell unterschiedlichen Wärmebehandlungsprozessen zu unterwerfen. In diesem Zusammenhang können beispielsweise lediglich diejenigen Teilbereiche des zu härtenden Stahlblechs aufgeheizt werden, in denen eine Gefügeumwandlung hin zu härteren Gefügen, wie etwa Martensit stattfinden soll. Ferner besteht die Möglichkeit, die partielle Wärmebehandlung mittels Kontaktplatten durchzuführen, die zur partiellen Temperierung des Stahlblechs durch Wärmeleitung ausgebildet sind. Dies erfordert jedoch eine bestimmte Kontaktzeit mit den Platten, die üblicherweise länger ist als eine mittels der nachgelagerten Presse erreichbare (minimale) Taktzeit. Eine solche Verfahrensführung weist jedoch weiterhin regelmäßig den Nachteil auf, dass das Eindiffundieren einer üblicherweise zum Schutz vor Verzunderung auf die Oberfläche des Stahlblechs aufzubringenden Beschichtung, etwa einer Aluminium-Silizium-Beschichtung nicht effizient in den Wärmebehandlungsprozess integriert werden kann. Zudem erschwert die Abstimmung zwischen bestimmter Kontaktzeit und Taktzeit an der Presse regelmäßig die Integration entsprechender Temperierstationen in eine Presshärtelinie im industriellen Maßstab, in der Produktionsschwankungen während des Betriebs in der Regel unvermeidbar sind.Alternatively or additionally, there is the possibility of subjecting the steel sheet to be hardened to partially different heat treatment processes before cooling and reshaping in the press. In this context, for example, only those partial areas of the steel sheet to be hardened can be heated in which a structural change to harder structures, such as martensite, is to take place. It is also possible to carry out the partial heat treatment by means of contact plates, which are designed for partial temperature control of the steel sheet by conduction. However, this requires a certain contact time with the plates, which is usually longer than a (minimum) cycle time that can be achieved by means of the downstream press. However, such a method procedure regularly has the disadvantage that the diffusion of a coating that is usually applied to the surface of the steel sheet to protect against scaling, such as an aluminum-silicon coating, cannot be efficiently integrated into the heat treatment process. In addition, the coordination between specific contact time and cycle time on the press regularly makes it difficult to integrate the corresponding temperature control stations into a press hardening line on an industrial scale, in which production fluctuations during operation are generally unavoidable.

Soll das zu härtende Stahlblech vor dem Abkühlen und Umformen partiell unterschiedlichen Wärmebehandlungsprozessen unterworfen werden, besteht zudem regelmäßig das Problem, dass die unterschiedlichen, partiell auf das Stahlblech einwirkenden Wärmebehandlungsmaßnahmen nicht ausreichend zuverlässig thermisch voneinander getrennt werden können. Dieses Problem ergibt sich insbesondere dann, wenn die partiell unterschiedliche Wärmebehandlung nahezu gleichzeitig an dem Stahlblech ausgeführt werden soll.If the steel sheet to be hardened is to be partially subjected to different heat treatment processes before cooling and reshaping, there is also the regular problem that the different, partially on the steel sheet effective heat treatment measures cannot be thermally separated from one another with sufficient reliability. This problem arises in particular when the partially different heat treatment is to be carried out almost simultaneously on the steel sheet.

Verfahren zur Wärmebehandlung von Bauteilen sind aus der US 2015/299817 A1 , der US 2004/060623 A1 und der EP 2 548 975 A1 bekannt. Bei diesen Verfahren können aber keine unterschiedlichen, partiell auf das Bauteil einwirkenden Wärmebehandlungsmaßnahmen ausreichend zuverlässig thermisch voneinander getrennt werden.Processes for the heat treatment of components are from the US 2015/299817 A1 , the US 2004/060623 A1 and the EP 2 548 975 A1 known. With these methods, however, no different heat treatment measures that partially act on the component can be thermally separated from one another with sufficient reliability.

Hiervon ausgehend ist es Aufgabe der vorliegenden Erfindung, die mit Bezug auf den Stand der Technik geschilderten Probleme zumindest teilweise zu lösen. Insbesondere sollen eine Temperierstation und eine Vorrichtung zur Wärmebehandlung eines metallischen Bauteils angegeben werden, die eine ausreichend zuverlässige thermische Abgrenzung von partiell auf das Bauteil einwirkenden Wärmebehandlungsmaßnahmen und/oder eine ausreichend zuverlässige thermische Trennung von partiell auf das Bauteil einwirkenden, unterschiedlichen Wärmebehandlungsmaßnahmen erlauben.Proceeding from this, it is the object of the present invention to at least partially solve the problems described with reference to the prior art. In particular, a temperature control station and a device for heat treatment of a metallic component are to be specified, which allow a sufficiently reliable thermal delimitation of heat treatment measures partially acting on the component and / or a sufficiently reliable thermal separation of different heat treatment measures partially acting on the component.

Diese Aufgaben werden gelöst durch die Merkmale der unabhängigen Patentansprüche. Weitere vorteilhafte Ausgestaltungen der hier vorgeschlagenen Lösung sind in den abhängigen Patentansprüchen angegeben. Es ist darauf hinzuweisen, dass die in den abhängigen Patentansprüchen einzeln aufgeführten Merkmale in beliebiger, technologisch sinnvoller Weise miteinander kombiniert werden können und weitere Ausgestaltungen der Erfindung definieren. Darüber hinaus werden die in den Patentansprüchen angegebenen Merkmale in der Beschreibung näher präzisiert und erläutert, wobei weitere bevorzugte Ausgestaltungen der Erfindung dargestellt werden.These objects are achieved by the features of the independent patent claims. Further advantageous refinements of the solution proposed here are specified in the dependent claims. It should be pointed out that the features listed individually in the dependent claims can be combined with one another in any desired, technologically meaningful manner and define further embodiments of the invention. In addition, the features specified in the patent claims are specified and explained in greater detail in the description, with further preferred embodiments of the invention being presented.

Gemäß der Offenbarung (nicht Teil der Erfindung) wird eine Temperierstation zur partiellen Wärmebehandlung eines metallischen Bauteils vorgeschlagen, mit einer in der Temperierstation angeordneten Bearbeitungsebene, in der das Bauteil anordenbar ist, mindestens einer Düse, die hin zu der Bearbeitungsebene ausgerichtet und zum Austragen eines Fluidstroms zum Kühlen mindestens eines ersten Teilbereichs des Bauteils vorgesehen und eingerichtet ist und mindestens einem Düsenkasten, der oberhalb der Bearbeitungsebene angeordnet ist, wobei der mindestens eine Düsenkasten mindestens einen Düsenbereich bildet, in dem die mindestens eine Düse zumindest teilweise anordenbar ist und/oder der eine Ausbreitung des Fluidstroms zumindest teilweise begrenzt, wobei der mindestens eine Düsenkasten zumindest teilweise mit einem keramischen Material gebildet istAccording to the disclosure (not part of the invention), a temperature control station for the partial heat treatment of a metallic component is proposed, with a processing level arranged in the temperature control station in which the component can be arranged, at least one nozzle which is oriented towards the processing level and for discharging a fluid flow is provided and set up for cooling at least a first portion of the component and at least one nozzle box, which is located above the Machining plane is arranged, the at least one nozzle box forming at least one nozzle area in which the at least one nozzle can at least partially be arranged and / or which at least partially limits the spread of the fluid flow, the at least one nozzle box being at least partially formed with a ceramic material

Bei dem metallischen Bauteil handelt es sich vorzugsweise um eine metallische Platine, ein Stahlblech oder ein zumindest teilweise vorgeformtes Halbzeug. Das metallische Bauteil ist bevorzugt mit beziehungsweise aus einem (härtbaren) Stahl, beispielweise einem Bor-(Mangan-)Stahl, z. B. mit der Bezeichnung 22MnB5, gebildet. Weiter bevorzugt ist das metallische Bauteil zumindest zu einem Großteil mit einer (metallischen) Beschichtung versehen beziehungsweise vorbeschichtet. Bei der metallischen Beschichtung kann es sich beispielsweise um eine (vorrangig) Zink enthaltende Beschichtung oder eine (vorrangig) Aluminium und/oder Silizium enthaltende Beschichtung, insbesondere eine sogenannte Aluminium/Silizium(Al/Si)-Beschichtung handeln.The metallic component is preferably a metallic blank, a sheet steel or an at least partially preformed semi-finished product. The metallic component is preferably made with or made of a (hardenable) steel, for example a boron (manganese) steel, e.g. B. with the designation 22MnB5 formed. Furthermore, the metallic component is at least for the most part provided with a (metallic) coating or precoated. The metallic coating can be, for example, a (primarily) zinc-containing coating or a (primarily) aluminum and / or silicon-containing coating, in particular a so-called aluminum / silicon (Al / Si) coating.

Die Temperierstation ist bevorzugt einem ersten Ofen nachgeordnet und/oder einem zweiten Ofen vorgeordnet. In der Temperierstation ist eine Bearbeitungsebene angeordnet, in der das Bauteil anordenbar beziehungsweise angeordnet ist. Die Bearbeitungsebene bezeichnet hierbei insbesondere die Ebene, in die das Bauteil zur Behandlung in der Temperierstation verbringbar und/oder in der das Bauteil während der Behandlung in der Temperierstation angeordnet und/oder fixierbar ist. Bevorzugt ist die Bearbeitungsebene im Wesentlichen horizontal ausgerichtet. Bevorzugt ist das Bauteil in der Bearbeitungsebene anordenbar beziehungsweise angeordnet und relativ zum Düsenkasten ausrichtbar beziehungsweise ausgerichtet. Bevorzugt ist das Bauteil, wenn es in der Bearbeitungsstation angeordnet ist, relativ zum Düsenkasten ausgerichtet.The temperature control station is preferably arranged downstream of a first furnace and / or upstream of a second furnace. A processing plane in which the component can be or is arranged is arranged in the temperature control station. The processing level here refers in particular to the level into which the component can be brought for treatment in the temperature control station and / or in which the component is arranged and / or fixed during the treatment in the temperature control station. The working plane is preferably aligned essentially horizontally. The component can preferably be arranged or arranged in the machining plane and oriented or aligned relative to the nozzle box. The component, when it is arranged in the processing station, is preferably oriented relative to the nozzle box.

Die Temperierstation weist mindestens eine Düse auf. Die Düse ist hin zu der Bearbeitungsebene ausgerichtet. Zudem ist die Düse zum Austragen eines Fluidstroms zum Kühlen mindestens eines ersten Teilbereichs des Bauteils vorgesehen und eingerichtet, insbesondere so, dass eine Temperaturdifferenz zwischen dem mindestens einen ersten (im fertig behandelten Bauteil duktileren) Teilbereich und mindestens einem zweiten (im fertig behandelten Bauteil im Vergleich dazu härteren) Teilbereich des Bauteils einstellbar ist. Bevorzugt ist eine Vielzahl von Düsen vorgesehen, wobei die Düsen besonders bevorzugt zu einem Düsenfeld angeordnet sind. Wenn eine Vielzahl von Düsen vorgesehen ist, kann der Düsenkasten für jede Düse einen separaten Düsenbereich und/oder für mehrere oder alle Düsen aus der Vielzahl von Düsen einen gemeinsamen Düsenbereich bilden. Bevorzugt ist die (jede) Düse in der Art einer Flachstrahldüse und/oder einer Runddüse geformt.The temperature control station has at least one nozzle. The nozzle is oriented towards the working plane. In addition, the nozzle for discharging a fluid flow for cooling at least a first sub-area of the component is provided and set up, in particular so that a temperature difference between the at least one first (more ductile in the finished component) sub-area and at least one second (in the finished treated component) is compared harder) part of the component is adjustable. A plurality of nozzles is preferably provided, the nozzles particularly preferably being arranged in a nozzle field. If a plurality of nozzles is provided, the nozzle box can form a separate nozzle area for each nozzle and / or form a common nozzle area for several or all nozzles from the plurality of nozzles. The (each) nozzle is preferably shaped in the manner of a flat jet nozzle and / or a round nozzle.

Weiterhin hat die Temperierstation mindestens einen Düsenkasten, der oberhalb der Bearbeitungsebene angeordnet ist. Der Düsenkasten kann in der Art eines Rahmens, einer Box und/oder eines Gehäuses gestaltet sein, in dem Aussparungen und/oder Räume vorgesehen sein können, in denen Düsen und/oder Wärmequellen aufnehmbar sind. Insbesondere ist der Düsenkasten derart gebildet, insbesondere geformt, dass er mindestens einen Düsenbereich von der Umgebung und/oder von mindestens einem Erwärmungsbereich zumindest teilweise (thermisch) trennen, abgrenzen und/oder abschirmen kann. Vorzugsweise weist der Düsenkasten eine (horizontale) Breite auf, die insbesondere um mindestens das eineinhalbfache größer ist als eine (vertikale) Höhe des Düsenkastens. Bevorzugt weist der Düsenkasten, insbesondere an einem unteren Ende beziehungsweise an der Unterseite eine (Außen-)Kontur auf, die im Wesentlichen entsprechend beziehungsweise analog zu einer Außenkontur eines (zu behandelnden) Bauteils geformt ist.Furthermore, the temperature control station has at least one nozzle box which is arranged above the processing level. The nozzle box can be designed in the manner of a frame, a box and / or a housing, in which recesses and / or spaces can be provided in which nozzles and / or heat sources can be received. In particular, the nozzle box is formed, in particular shaped, in such a way that it can at least partially (thermally) separate, delimit and / or shield at least one nozzle area from the environment and / or from at least one heating area. The nozzle box preferably has a (horizontal) width which is, in particular, at least one and a half times greater than a (vertical) height of the nozzle box. The nozzle box preferably has an (outer) contour, in particular at a lower end or on the underside, which is shaped essentially corresponding to or analogously to an outer contour of a component (to be treated).

Der mindestens eine Düsenkasten bildet mindestens einen Düsenbereich. Bevorzugt können mehrere Düsenbereiche ausgebildet sein. Bevorzugt ist der mindestens eine Düsenbereich derart von dem Düsenkasten gebildet beziehungsweise geformt, dass er mindestens eine Düse zumindest teilweise aufnehmen kann. Zum Bilden des Düsenbereichs kann der Düsenkasten eine oder mehrere Wände und/oder Wandabschnitte aufweisen, die den Düsenbereich zumindest teilweise umgeben und/oder gegenüber der Umgebung und/oder gegenüber mindestens einem Erwärmungsbereich begrenzen beziehungsweise abgrenzen. Bevorzugt weist der Düsenkasten mindestens eine (Innen-)Wand auf, die einen Düsenbereich, in einem parallel zu der Bearbeitungsebene ausgerichteten Querschnitt betrachtet, vollständig umgibt.The at least one nozzle box forms at least one nozzle area. A plurality of nozzle areas can preferably be formed. The at least one nozzle area is preferably formed or shaped by the nozzle box in such a way that it can at least partially accommodate at least one nozzle. To form the nozzle area, the nozzle box can have one or more walls and / or wall sections which at least partially surround the nozzle area and / or delimit or delimit it from the surroundings and / or from at least one heating area. The nozzle box preferably has at least one (inner) wall which completely surrounds a nozzle area when viewed in a cross section aligned parallel to the processing plane.

In dem mindestens einen Düsenbereich ist die mindestens eine Düse zumindest teilweise anordenbar beziehungsweise angeordnet. Erfindungsgemäß ragt die mindestens eine Düse zumindest teilweise in den Düsenbereich hinein oder ist sogar vollständig in dem Düsenbereich angeordnet. Alternativ oder zusätzlich ist der Düsenbereich derart gebildet, dass der Düsenbereich eine Ausbreitung des Fluidstroms zumindest teilweise begrenzt. Dies ermöglicht in vorteilhafter Weise, dass ein mittels der mindestens einen Düse hin zu dem Bauteil ausgetragener Fluidstrom gezielt zu dem mindestens einen ersten Teilbereich des Bauteils geführt werden kann, insbesondere auch dann, wenn die Düse nicht in den Düsenbereich hineinragt oder in diesem angeordnet ist. Bevorzugt begrenzt der Düsenbereich beziehungsweise eine den Düsenbereich bildende (Innen-)Wand des Düsenkastens eine Ausbreitung des Fluidstroms in einer seitlichen und/oder horizontalen Richtung.The at least one nozzle can be or is at least partially arranged in the at least one nozzle area. According to the invention, the at least one nozzle protrudes at least partially into the nozzle area or is even arranged completely in the nozzle area. Alternatively or additionally, the nozzle area is formed in such a way that the nozzle area at least partially limits the spread of the fluid flow. This advantageously enables a fluid flow discharged to the component by means of the at least one nozzle to be directed to the at least one first partial area of the component, in particular also when the nozzle does not protrude into the nozzle area or is arranged in it. The nozzle area or an (inner) wall of the nozzle box which forms the nozzle area preferably limits the spread of the fluid flow in a lateral and / or horizontal direction.

Darüber hinaus ist der mindestens eine Düsenkasten zumindest teilweise mit beziehungsweise aus einem keramischen Material gebildet. Bevorzugt ist mindestens eine Wand und/oder mindestens ein Wandabschnitt des Düsenkastens mit beziehungsweise aus dem keramischen Material gebildet, die beziehungsweise der besonders bevorzugt mindestens einen Düsenbereich von mindestens einem Erwärmungsbereich (thermisch und/oder räumlich) trennt. Bevorzugt ist das keramische Material gesintert.In addition, the at least one nozzle box is at least partially formed with or from a ceramic material. At least one wall and / or at least one wall section of the nozzle box is preferably formed with or from the ceramic material, the particularly preferably at least one nozzle area of at least one heating area (thermally and / or spatially) separates. The ceramic material is preferably sintered.

Nach einem weiteren Aspekt wird eine Temperierstation zur partiellen Wärmebehandlung eines metallischen Bauteils vorgeschlagen, mit einer in der Temperierstation angeordneten Bearbeitungsebene, in der das Bauteil anordenbar ist, mindestens einer Düse, die hin zu der Bearbeitungsebene ausgerichtet und zum Austragen eines Fluidstroms zum Kühlen mindestens eines ersten Teilbereichs des Bauteils vorgesehen und eingerichtet ist, mindestens einer Wärmequelle, die dazu vorgesehen und eingerichtet ist, Wärmeenergie in mindestens einen zweiten Teilbereich des Bauteils einzutragen und mindestens einem Düsenkasten, der oberhalb der Bearbeitungsebene angeordnet ist, wobei der mindestens eine Düsenkasten mindestens einen Düsenbereich bildet, in dem die mindestens eine Düse zumindest teilweise anordenbar ist und/oder der eine Ausbreitung des Fluidstroms zumindest teilweise begrenzt, wobei der mindestens eine Düsenkasten mindestens einen von dem mindestens einen Düsenbereich getrennten Erwärmungsbereich bildet, in dem die Wärmequelle zumindest teilweise anordenbar ist und/oder der eine Ausbreitung von Wärmeenergie zumindest teilweise begrenzt.According to a further aspect, a temperature control station for the partial heat treatment of a metallic component is proposed, with a processing level arranged in the temperature control station in which the component can be arranged, at least one nozzle which is oriented towards the processing level and for discharging a fluid flow for cooling at least a first Sub-area of the component is provided and set up, at least one heat source which is provided and set up to introduce thermal energy into at least a second sub-area of the component and at least one nozzle box that is arranged above the processing plane, the at least one nozzle box forming at least one nozzle area, in which the at least one nozzle can at least partially be arranged and / or which at least partially limits a spread of the fluid flow, the at least one nozzle box having at least one heating area separate from the at least one nozzle area I forms in which the heat source can at least partially be arranged and / or which at least partially limits the spread of thermal energy.

Die mindestens eine Wärmequelle ist mindestens eine Strahlungswärmequelle. Bevorzugt handelt es sich bei der Wärmequelle um eine aktiv betreibbare, insbesondere elektrisch betreibbare beziehungsweise bestrombare Wärmequelle. Besonders bevorzugt ist die Wärmequelle mit einem elektrisch betriebenen (das Bauteil nicht körperlich oder elektrisch kontaktierenden) Heizelement gebildet. Bei dem Heizelement kann es sich um eine Heizschleife und/oder einen Heizdraht handeln. Alternativ oder zusätzlich kann die Wärmequelle mit einem (gasbeheizten) Strahlrohr gebildet sein.The at least one heat source is at least one radiant heat source. The heat source is preferably an actively operable, in particular electrically operable or energizable heat source. The heat source is particularly preferably formed with an electrically operated heating element (which does not physically or electrically contact the component). The heating element can be a heating loop and / or a heating wire. Alternatively or additionally, the heat source can be formed with a (gas-heated) radiant tube.

Der mindestens eine Erwärmungsbereich ist von dem Düsenkasten gebildet. Bevorzugt ist der mindestens eine Erwärmungsbereich derart von dem Düsenkasten gebildet beziehungsweise geformt, dass er mindestens eine Wärmequelle zumindest teilweise aufnehmen kann. Zum Bilden des Erwärmungsbereichs kann der Düsenkasten eine oder mehrere Wände und/oder Wandabschnitte aufweisen, die den Erwärmungsbereich zumindest teilweise umgeben und/oder gegenüber der Umgebung und/oder gegenüber mindestens einem Düsenbereich begrenzen beziehungsweise abgrenzen. Bevorzugt weist der Düsenkasten mindestens eine (Innen-)Wand auf, die einen Erwärmungsbereich, in einem parallel zu der Bearbeitungsebene ausgerichteten Querschnitt betrachtet, vollständig umgibt.The at least one heating area is formed by the nozzle box. The at least one heating area is preferably in this way from the nozzle box formed or shaped so that it can at least partially absorb at least one heat source. To form the heating area, the nozzle box can have one or more walls and / or wall sections which at least partially surround the heating area and / or delimit or delimit it from the surroundings and / or from at least one nozzle area. The nozzle box preferably has at least one (inner) wall which completely surrounds a heating area when viewed in a cross section aligned parallel to the processing plane.

In dem mindestens einen Erwärmungsbereich ist die mindestens eine Wärmequelle zumindest teilweise anordenbar beziehungsweise angeordnet. Bevorzugt ragt die mindestens eine Wärmequelle zumindest teilweise in den Erwärmungsbereich hinein oder ist sogar vollständig in dem Erwärmungsbereich angeordnet. Alternativ oder zusätzlich ist der Erwärmungsbereich derart gebildet, dass der Erwärmungsbereich eine Ausbreitung von Wärmeenergie zumindest teilweise begrenzt. Dies ermöglicht in vorteilhafter Weise, dass mittels der mindestens einen Wärmequelle hin zu dem Bauteil ausgetragene beziehungsweise abgestrahlte Wärmeenergie gezielt zu dem mindestens einen zweiten Teilbereich des Bauteils geführt werden kann, insbesondere auch dann, wenn die Wärmequelle nicht in den Erwärmungsbereich hineinragt oder in diesem angeordnet ist. Bevorzugt begrenzt der Erwärmungsbereich beziehungsweise eine den Erwärmungsbereich bildende (Innen-)Wand des Düsenkastens eine Ausbreitung der Wärmeenergie in einer seitlichen und/oder horizontalen Richtung. Wenn die Wärmequelle mit einer insbesondere elektrisch betreibbaren oder gasbeheizbaren Strahlungswärmequelle gebildet ist, kann insbesondere seitlich abstrahlende Wärmestrahlung beispielsweise von einer Innenwand des Erwärmungsbereichs hin zu dem zweiten Teilbereich des Bauteils gelenkt beziehungsweise reflektiert werden.The at least one heat source can be or is at least partially arranged in the at least one heating area. The at least one heat source preferably protrudes at least partially into the heating area or is even arranged completely in the heating area. Alternatively or additionally, the heating area is formed in such a way that the heating area at least partially limits the spread of thermal energy. This advantageously enables thermal energy discharged or radiated to the component to be directed to the at least one second sub-area of the component by means of the at least one heat source, in particular even when the heat source does not protrude into the heating area or is located in it . Preferably, the heating area or an (inner) wall of the nozzle box forming the heating area limits a spread of the thermal energy in a lateral and / or horizontal direction. If the heat source is formed with a radiant heat source that can in particular be operated electrically or gas-heated, laterally radiating heat radiation can be deflected or reflected, for example, from an inner wall of the heating area to the second sub-area of the component.

Die im Zusammenhang mit der zuerst vorgestellten Temperierstation erörterten Details, Merkmale und vorteilhaften Ausgestaltungen können entsprechend auch bei der hier vorgestellten Temperierstation auftreten und umgekehrt. Insoweit wird auf die dortigen Ausführungen zur näheren Charakterisierung der Merkmale vollumfänglich Bezug genommen.The details, features and advantageous configurations discussed in connection with the temperature control station presented first can also be used accordingly occur in the temperature control station presented here and vice versa. In this respect, reference is made in full to the statements made there for a more detailed characterization of the features.

Nach einer vorteilhaften Ausgestaltung wird vorgeschlagen, dass der mindestens eine Düsenkasten zumindest teilweise mit beziehungsweise aus einem faserverstärkten keramischen Material gebildet ist. Als Fasern können hier beispielsweise Aluminiumoxid-Fasern verwendet werden. Bevorzugt ist der mindestens eine Düsenkasten beziehungsweise mindestens eine Wand und/oder mindestens ein Wandabschnitt des Düsenkastens zumindest teilweise mit beziehungsweise aus einer mit (feinen) Fasern aus Aluminiumoxid verstärkten Aluminiumoxid-Keramik gebildet.According to an advantageous embodiment, it is proposed that the at least one nozzle box is formed at least partially with or from a fiber-reinforced ceramic material. Aluminum oxide fibers, for example, can be used here as fibers. The at least one nozzle box or at least one wall and / or at least one wall section of the nozzle box is preferably formed at least partially with or from an aluminum oxide ceramic reinforced with (fine) fibers of aluminum oxide.

Nach einer weiteren vorteilhaften Ausgestaltung wird vorgeschlagen, dass der mindestens eine Düsenkasten zumindest teilweise mit beziehungsweise aus einer Aluminiumoxid-Keramik gebildet ist. Bevorzugt ist mindestens eine Wand und/oder mindestens ein Wandabschnitt des Düsenkastens zumindest teilweise mit beziehungsweise aus einer Aluminiumoxid-Keramik gebildet. Besonders bevorzugt sind (nahezu) alle Wände und/oder Wandabschnitte des Düsenkastens mit beziehungsweise aus einer, insbesondere mit (feinen) Fasern aus Aluminiumoxid verstärkten, Aluminiumoxid-Keramik gebildet.According to a further advantageous embodiment, it is proposed that the at least one nozzle box is formed at least partially with or from an aluminum oxide ceramic. At least one wall and / or at least one wall section of the nozzle box is preferably formed at least partially with or from an aluminum oxide ceramic. (Almost) all walls and / or wall sections of the nozzle box are particularly preferably formed with or from an aluminum oxide ceramic reinforced in particular with (fine) fibers made of aluminum oxide.

Nach einer vorteilhaften Ausgestaltung wird vorgeschlagen, dass in mindestens einem Düsenbereich zumindest teilweise ein Düsenfeld mit einer Vielzahl von insbesondere beabstandet zueinander gehaltenen Düsen angeordnet ist. Bevorzugt ist die Form des Düsenfelds und/oder die Anordnung der mehreren Düsen an die (zu erzielende) Geometrie des mindestens einen ersten Teilbereichs des Bauteils angepasst.According to an advantageous embodiment, it is proposed that a nozzle field with a plurality of nozzles, in particular held at a distance from one another, is arranged at least partially in at least one nozzle area. The shape of the nozzle field and / or the arrangement of the plurality of nozzles is preferably adapted to the (to be achieved) geometry of the at least one first partial area of the component.

Nach einer vorteilhaften Ausgestaltung wird vorgeschlagen, dass der mindestens eine Düsenbereich derart geformt ist, dass er einen Bereich der Bearbeitungsebene überspannt, in dem der mindestens eine erste Teilbereich des Bauteils anordenbar ist. Bevorzugt weist ein parallel zu der Bearbeitungsebene ausgerichteter Querschnitt des Düsenbereichs eine Form beziehungsweise Geometrie auf, die der (zu erzielenden) Form beziehungsweise Geometrie des ersten Teilbereichs des Bauteils entspricht. Weiterhin bevorzugt ist der mindestens eine Erwärmungsbereich derart geformt ist, dass er einen Bereich der Bearbeitungsebene überspannt, in dem der mindestens eine zweite Teilbereich des Bauteils anordenbar ist. Besonders bevorzugt weist ein parallel zu der Bearbeitungsebene ausgerichteter Querschnitt des Erwärmungsbereichs eine Form beziehungsweise Geometrie auf, die der (zu erzielenden) Form beziehungsweise Geometrie des zweiten Teilbereichs des Bauteils entspricht.According to an advantageous embodiment, it is proposed that the at least one nozzle area is shaped in such a way that it spans an area of the working plane in which the at least one first partial area of the component can be arranged. A cross section of the nozzle area aligned parallel to the processing plane preferably has a shape or geometry which corresponds to the (to be achieved) shape or geometry of the first partial area of the component. Furthermore, the at least one heating area is preferably shaped in such a way that it spans an area of the processing plane in which the at least one second partial area of the component can be arranged. Particularly preferably, a cross-section of the heating area aligned parallel to the processing plane has a shape or geometry that corresponds to the (to be achieved) shape or geometry of the second partial area of the component.

Darüber hinaus kann der mindestens eine Düsenbereich an einer bestimmten (lateralen und/oder horizontalen) Position in beziehungsweise an dem Düsenkasten angeordnet sein, die mit einer (lateralen und/oder horizontalen) Position des mindestens einen ersten Teilbereichs in dem Bauteil korrespondiert, insbesondere überlappt, sobald das Bauteil in der Bearbeitungsebene angeordnet und/oder bezüglich des Düsenkastens ausgerichtet ist. Zudem kann der mindestens eine Erwärmungsbereich an einer bestimmten (lateralen und/oder horizontalen) Position in beziehungsweise an dem Düsenkasten angeordnet sein, die mit einer (lateralen und/oder horizontalen) Position des mindestens einen zweiten Teilbereichs in dem Bauteil korrespondiert, insbesondere überlappt, sobald das Bauteil in der Bearbeitungsebene angeordnet und/oder bezüglich des Düsenkastens ausgerichtet ist.In addition, the at least one nozzle area can be arranged at a specific (lateral and / or horizontal) position in or on the nozzle box, which corresponds to, in particular overlaps, a (lateral and / or horizontal) position of the at least one first partial area in the component. as soon as the component is arranged in the processing plane and / or aligned with respect to the nozzle box. In addition, the at least one heating area can be arranged at a specific (lateral and / or horizontal) position in or on the nozzle box, which corresponds to a (lateral and / or horizontal) position of the at least one second partial area in the component, in particular overlaps as soon as the component is arranged in the processing plane and / or aligned with respect to the nozzle box.

Nach einer vorteilhaften Ausgestaltung wird vorgeschlagen, dass der mindestens eine Düsenkasten zumindest teilweise doppelwandig gebildet ist und/oder zumindest teilweise ein Isoliermaterial aufweist. Bevorzugt ist der Düsenkasten im Bereich des mindestens einen Erwärmungsbereichs beziehungsweise zumindest teilweise um den mindestens einen Erwärmungsbereich herum doppelwandig gebildet und/oder (thermisch) isoliert. Das Isoliermaterial ist insbesondere mit beziehungsweise aus einem mikroporösen Dämmstoff gebildet. Bevorzugt ist das Isoliermaterial zwischen Wänden und/oder Wandabschnitten des Düsenkastens angeordnet, die einen doppelwandigen Abschnitt des Düsenkastens bilden. Bevorzugt ist das Isoliermaterial temperaturbeständig für Temperaturen oberhalb von 1073,15 K.According to an advantageous embodiment, it is proposed that the at least one nozzle box is at least partially double-walled and / or at least partially has an insulating material. The nozzle box is preferably in the area of the at least one heating area or at least partially formed double-walled around the at least one heating area and / or (thermally) insulated. The insulating material is in particular formed with or from a microporous insulating material. The insulating material is preferably arranged between walls and / or wall sections of the nozzle box, which form a double-walled section of the nozzle box. The insulating material is preferably temperature-resistant for temperatures above 1073.15 K.

Nach einem weiteren Aspekt wird eine Vorrichtung zur (partiellen) Wärmebehandlung eines metallischen Bauteils vorgeschlagen, zumindest umfassend:

  • einen, insbesondere mittels Strahlungswärme und/oder Konvektion beheizbaren ersten Ofen,
  • eine dem ersten Ofen nachgeordnete, hier vorgestellte Temperierstation.
According to a further aspect, a device for (partial) heat treatment of a metallic component is proposed, at least comprising:
  • a first furnace that can be heated in particular by means of radiant heat and / or convection,
  • a temperature control station presented here, downstream of the first furnace.

Nach einer vorteilhaften Ausgestaltung wird vorgeschlagen, dass die Vorrichtung weiterhin zumindest umfasst:

  • einen der Temperierstation nachgeordneten, insbesondere mittels Strahlungswärme und/oder Konvektion beheizbaren zweiten Ofen, und/oder
  • ein der Temperierstation und/oder dem zweiten Ofen nachgeordnetes Presshärtewerkzeug.
According to an advantageous embodiment, it is proposed that the device further comprises at least:
  • a second furnace which is arranged downstream of the temperature control station, in particular can be heated by means of radiant heat and / or convection, and / or
  • a press hardening tool downstream of the temperature control station and / or the second furnace.

Nach einer weiteren vorteilhaften Ausgestaltung wird vorgeschlagen, dass zumindest der erste Ofen oder der zweite Ofen ein Durchlaufofen oder ein Kammerofen ist. Bevorzugt ist der erste Ofen ein Durchlaufofen, insbesondere ein Rollenherdofen. Besonders bevorzugt ist der zweite Ofen ein Durchlaufofen, insbesondere ein Rollenherdofen, oder ein Kammerofen, insbesondere ein Mehrlagenkammerofen mit mindestens zwei übereinander angeordneten Kammern. Bevorzugt weist der zweite Ofen einen, insbesondere (ausschließlich) mittels Strahlungswärme beheizbaren, Ofeninnenraum auf, in dem vorzugsweise eine nahezu einheitliche Innentemperatur einstellbar ist. Insbesondere wenn der zweite Ofen als Mehrlagenkammerofen ausgeführt ist, können, entsprechend der Anzahl der Kammern, mehrere solcher Ofeninnenräume vorhanden sein.According to a further advantageous embodiment, it is proposed that at least the first furnace or the second furnace is a continuous furnace or a chamber furnace. The first furnace is preferably a continuous furnace, in particular a roller hearth furnace. The second furnace is particularly preferably a continuous furnace, in particular a roller hearth furnace, or a chamber furnace, in particular a multi-layer chamber furnace with at least two chambers arranged one above the other. The second furnace preferably has a furnace interior which can in particular (exclusively) be heated by means of radiant heat, in which an almost uniform internal temperature can preferably be set. Especially when the second furnace is designed as a multi-layer chamber furnace, several such furnace interiors can be present, depending on the number of chambers.

Bevorzugt sind in dem ersten Ofen und/oder in dem zweiten Ofen (ausschließlich) Strahlungswärmequellen angeordnet. Besonders bevorzugt ist in einem Ofeninnenraum des ersten Ofens und/oder in einem Ofeninnenraum des zweiten Ofens mindestens ein elektrisch betriebenes (das Bauteil nicht kontaktierendes) Heizelement, wie beispielsweise mindestens eine elektrisch betriebene Heizschleife und/oder mindestens ein elektrisch betriebener Heizdraht angeordnet. Alternativ oder zusätzlich kann in dem Ofeninnenraum des ersten Ofens und/oder dem Ofeninnenraum des zweiten Ofens mindestens ein insbesondere gasbeheiztes Strahlrohr angeordnet sein. Vorzugsweise sind in dem Ofeninnenraum des ersten Ofens und/oder dem Ofeninnenraum des zweiten Ofens mehrere Strahlrohrgasbrenner beziehungsweise Strahlrohre angeordnet, in die jeweils mindestens ein Gasbrenner hineinbrennt. Hierbei ist es besonders vorteilhaft, wenn der innere Bereich der Stahlrohre, in den die Gasbrenner hineinbrennen, atmosphärisch von dem Ofeninnenraum getrennt ist, so dass keine Verbrennungsgase oder Abgase in den Ofeninnenraum gelangen und somit die Ofenatmosphäre beeinflussen können. Eine solche Anordnung wird auch als "indirekte Gasbeheizung" bezeichnet.Radiant heat sources (exclusively) are preferably arranged in the first oven and / or in the second oven. Particularly preferably, at least one electrically operated heating element (which does not contact the component), such as at least one electrically operated heating loop and / or at least one electrically operated heating wire, is arranged in an oven interior of the first oven and / or in an oven interior of the second oven. Alternatively or additionally, at least one, in particular gas-heated, radiant tube can be arranged in the oven interior of the first oven and / or the oven interior of the second oven. Preferably, a plurality of radiant tube gas burners or radiant tubes, into each of which at least one gas burner burns, are arranged in the furnace interior of the first furnace and / or the furnace interior of the second furnace. It is particularly advantageous if the inner area of the steel pipes into which the gas burners burn is atmospherically separated from the furnace interior, so that no combustion gases or exhaust gases can get into the furnace interior and thus influence the furnace atmosphere. Such an arrangement is also referred to as "indirect gas heating".

Die im Zusammenhang mit den Temperierstationen erörterten Details, Merkmale und vorteilhaften Ausgestaltungen können entsprechend auch bei der hier vorgestellten Vorrichtung auftreten und umgekehrt. Insoweit wird auf die dortigen Ausführungen zur näheren Charakterisierung der Merkmale vollumfänglich Bezug genommen.The details, features and advantageous configurations discussed in connection with the temperature control stations can correspondingly also occur in the device presented here and vice versa. In this respect, reference is made in full to the statements made there for a more detailed characterization of the features.

Nach einem weiteren Aspekt wird eine Verwendung eines zumindest teilweise mit einem keramischen Material gebildeten Düsenkastens in einer Temperierstation vorgeschlagen, wobei der Düsenkasten zum partiellen Wärmebehandeln eines metallischen Bauteils verwendet wird.According to a further aspect, a use of a nozzle box formed at least partially with a ceramic material is proposed in a temperature control station, the nozzle box being used for the partial heat treatment of a metallic component.

Die im Zusammenhang mit den Temperierstationen und/oder der Vorrichtung erörterten Details, Merkmale und vorteilhaften Ausgestaltungen können entsprechend auch bei der hier vorgestellten Verwendung auftreten und umgekehrt. Insoweit wird auf die dortigen Ausführungen zur näheren Charakterisierung der Merkmale vollumfänglich Bezug genommen.The details, features and advantageous refinements discussed in connection with the temperature control stations and / or the device can correspondingly also occur in the use presented here and vice versa. In this respect, reference is made in full to the statements made there for a more detailed characterization of the features.

Die Erfindung, sowie das technische Umfeld werden nachfolgend anhand der Figuren näher erläutert. Es ist darauf hinzuweisen, dass die Erfindung durch die gezeigten Ausführungsbeispiele nicht beschränkt werden soll. Insbesondere ist es, soweit nicht explizit anders dargestellt, auch möglich, Teilaspekte der in den Figuren erläuterten Sachverhalte zu extrahieren und mit anderen Bestandteilen und/oder Erkenntnissen aus anderen Figuren und/oder der vorliegenden Beschreibung zu kombinieren. Es zeigen:

Fig. 1:
eine schematische Darstellung einer erfindungsgemäßen Temperierstation,
Fig. 2:
eine schematische Darstellung einer weiteren erfindungsgemäßen Temperierstation,
Fig. 3:
eine perspektivische Ansicht eines geschnitten dargestellten Düsenkastens, der in einer erfindungsgemäßen Temperierstation zum Einsatz kommen kann,
Fig. 4:
eine schematische Darstellung einer erfindungsgemäßen Vorrichtung.
The invention and the technical environment are explained in more detail below with reference to the figures. It should be pointed out that the invention is not intended to be restricted by the exemplary embodiments shown. In particular, unless explicitly stated otherwise, it is also possible to extract partial aspects of the facts explained in the figures and to combine them with other components and / or findings from other figures and / or the present description. Show it:
Fig. 1:
a schematic representation of a temperature control station according to the invention,
Fig. 2:
a schematic representation of a further temperature control station according to the invention,
Fig. 3:
a perspective view of a nozzle box shown in section, which can be used in a temperature control station according to the invention,
Fig. 4:
a schematic representation of a device according to the invention.

Fig. 1 zeigt eine schematische Darstellung einer Temperierstation 1 zur partiellen Wärmebehandlung eines metallischen Bauteils 2. In der Temperierstation 1 ist eine Bearbeitungsebene 3 angeordnet, in der das Bauteil 2 liegt. Die Temperierstation 1 weist beispielhaft eine Düse 4 auf, die hin zu der Bearbeitungsebene 3 ausgerichtet und zum Austragen eines Fluidstroms 5 zum Kühlen mindestens eines ersten Teilbereichs 6 des Bauteils 2 vorgesehen und eingerichtet ist. Zudem weist die Temperierstation 1 beispielhaft eine Wärmequelle 9 auf, die dazu vorgesehen und eingerichtet ist, Wärmeenergie in mindestens einen zweiten Teilbereich 10 des Bauteils 2 einzutragen. Die Wärmequelle 9 ist hier beispielhaft in der Art eines bestrombaren Heizdrahtes gebildet. Darüber hinaus weist die Temperierstation 1 einen Düsenkasten 7 auf, der oberhalb der Bearbeitungsebene 3 angeordnet ist. Der Düsenkasten 7 bildet hier einen Düsenbereich 8, in dem die Düse 4 zumindest teilweise angeordnet ist. Zudem bildet der Düsenkasten 7 gemäß der Darstellung nach Fig. 1 einen von dem Düsenbereich 8 getrennten Erwärmungsbereich 11, in dem die Wärmequelle 9 zumindest teilweise angeordnet ist. Fig. 1 shows a schematic representation of a temperature control station 1 for the partial heat treatment of a metallic component 2. In the temperature control station 1 is a machining plane 3 is arranged in which the component 2 lies. The temperature control station 1 has, for example, a nozzle 4 which is oriented towards the processing plane 3 and is provided and set up for discharging a fluid stream 5 for cooling at least a first partial area 6 of the component 2. In addition, the temperature control station 1 has, for example, a heat source 9 which is provided and set up to introduce thermal energy into at least one second partial area 10 of the component 2. The heat source 9 is formed here, for example, in the form of a heating wire that can be energized. In addition, the temperature control station 1 has a nozzle box 7 which is arranged above the processing level 3. The nozzle box 7 here forms a nozzle area 8 in which the nozzle 4 is at least partially arranged. In addition, the nozzle box 7 simulates as shown Fig. 1 a heating area 11 which is separate from the nozzle area 8 and in which the heat source 9 is at least partially arranged.

In Fig. 1 ist der Düsenkasten 7 mit beziehungsweise sind die Wände 18 des Düsenkastens 7 aus einem keramischen Material gebildet. Als keramisches Material dient hier beispielhaft eine faserverstärkte Aluminiumoxid-Keramik. Zudem ist in Fig. 1 gezeigt, dass der Düsenkasten 7 um den Erwärmungsbereich 11 herum doppelwandig gebildet ist und zwischen den Wänden 18, die den doppelwandigen Abschnitt des Düsenkastens 7 bilden, ein Isoliermaterial 13 aufweist.In Fig. 1 is the nozzle box 7 with or the walls 18 of the nozzle box 7 are formed from a ceramic material. A fiber-reinforced aluminum oxide ceramic is used here as an example of the ceramic material. In addition, in Fig. 1 It is shown that the nozzle box 7 is double-walled around the heating area 11 and has an insulating material 13 between the walls 18, which form the double-walled section of the nozzle box 7.

Gemäß der Darstellung nach Fig. 1 ist zudem gezeigt, dass der Düsenbereich 8 derart geformt ist, dass er einen Bereich der Bearbeitungsebene 3 überspannt, in dem der erste Teilbereich 6 des Bauteils 2 angeordnet ist, sobald das Bauteil 2 in der Bearbeitungsebene 3 angeordnet und bezüglich des Düsenkastens 7 ausgerichtet ist. Zudem ist der Erwärmungsbereich 11 derart geformt, dass er einen Bereich der Bearbeitungsebene 3 überspannt, in dem der zweite Teilbereich 10 des Bauteils 2 angeordnet ist. Mit anderen Worten ausgedrückt, weist ein hier senkrecht zu der Zeichenebene und parallel zu der Bearbeitungsebene 3 ausgerichteter Querschnitt des Düsenbereichs 8 eine Form auf, die der (zu erzielenden) Form beziehungsweise Geometrie des ersten Teilbereichs 6 entspricht. Dementsprechend weist ein hier senkrecht zu der Zeichenebene und parallel zu der Bearbeitungsebene 3 ausgerichteter Querschnitt des Erwärmungsbereichs 11 eine Form auf, die der (zu erzielenden) Form beziehungsweise Geometrie des zweiten Teilbereichs 10 entspricht.According to the illustration after Fig. 1 it is also shown that the nozzle area 8 is shaped in such a way that it spans an area of the processing plane 3 in which the first partial area 6 of the component 2 is arranged as soon as the component 2 is arranged in the processing plane 3 and aligned with the nozzle box 7. In addition, the heating area 11 is shaped such that it spans an area of the processing plane 3 in which the second partial area 10 of the component 2 is arranged. In other words, a cross section of the nozzle region 8 that is perpendicular to the plane of the drawing and parallel to the processing plane 3 has a shape that corresponds to the shape (to be achieved) or the geometry of the first partial area 6 corresponds. Correspondingly, a cross-section of the heating region 11 that is oriented perpendicular to the plane of the drawing and parallel to the processing plane 3 has a shape which corresponds to the shape or geometry (to be achieved) of the second partial region 10.

Der Düsenbereich 8 und der Erwärmungsbereich 11 sind mittels des Düsenkastens voneinander (thermisch) getrennt, so dass dem Bauteil 2 ein Temperaturprofil mit möglichst exakt voneinander abgegrenzten, unterschiedlich temperierten Teilbereichen aufgeprägt werden kann. Dadurch, dass in dem ersten Teilbereich 6 durch die Abkühlung mittels der Düse 4 eine deutliche Temperaturdifferenz zwischen dem ersten Teilbereich 6 und dem zweiten Teilbereich 10 eingestellt wird, können sich nach einem Härten in einem der Temperierstation 1 nachgelagerten Presshärtewerkzeug (hier nicht dargestellt) in den Teilbereichen 6, 10 voneinander verschiedene Materialgefüge und/oder Festigkeitseigenschaften einstellen, wobei sich in dem gekühlten ersten Teilbereich 6 ein duktileres Gefüge und/oder eine geringere Härte einstellen kann als in dem zweiten Teilbereich 10.The nozzle area 8 and the heating area 11 are (thermally) separated from one another by means of the nozzle box, so that the component 2 can be impressed with a temperature profile with differently tempered partial areas that are as precisely as possible delimited from one another. Because a significant temperature difference is set between the first sub-area 6 and the second sub-area 10 in the first sub-area 6 as a result of the cooling by means of the nozzle 4, after hardening in a press hardening tool (not shown here) downstream of the temperature control station 1, the Subareas 6, 10 set different material structures and / or strength properties, it being possible for a more ductile structure and / or a lower hardness to set in the cooled first subarea 6 than in the second subarea 10.

Fig. 2 zeigt eine schematische Darstellung einer weiteren Temperierstation 1 zur partiellen Wärmebehandlung eines metallischen Bauteils 2. Da die Bezugszeichen einheitlich verwendet werden, werden hier lediglich die Unterschiede zu der in Fig. 1 dargestellten Temperierstation erörtert. Darüber hinaus wird auf die Erläuterungen zu Fig. 1 verwiesen, die hier vollständig in Bezug genommen werden. Ein erster Unterschied besteht darin, dass hier zwei Düsen 4 gezeigt sind, die zu einem Düsenfeld 12 angeordnet sind. Fig. 2 shows a schematic representation of a further temperature control station 1 for the partial heat treatment of a metallic component 2. Since the reference symbols are used uniformly, only the differences from that in FIG Fig. 1 discussed temperature control station. In addition, on the explanations too Fig. 1 which are fully incorporated herein by reference. A first difference is that here two nozzles 4 are shown, which are arranged to form a nozzle field 12.

Darüber hinaus ist in Fig. 2 beispielhaft veranschaulicht, dass der Düsenbereich 8 auch derart gebildet sein kann, dass er eine Ausbreitung des Fluidstroms 5 zumindest teilweise, hier beispielhaft seitlich begrenzt, ohne dass die Düse(n) selbst in dem Düsenbereich 8 angeordnet sein müssen. In analoger Weise ist der Erwärmungsbereich 11 hier beispielhaft derart von dem Düsenkasten 7 gebildet, dass er eine Ausbreitung von Wärmeenergie zumindest teilweise, hier beispielhaft seitlich begrenzt. Hierzu kann beispielsweise Wärmestrahlung, die in Fig. 2 mittels punktierten Linien angedeutet ist, an den innenliegenden Wänden 18 des Erwärmungsbereichs 11 reflektiert werden.In addition, in Fig. 2 exemplarily illustrates that the nozzle area 8 can also be formed in such a way that it at least partially limits the spread of the fluid flow 5, here for example laterally, without the nozzle (s) themselves having to be arranged in the nozzle area 8. The heating range is analogous 11 is formed here by the nozzle box 7 by way of example in such a way that it at least partially limits the spread of thermal energy, here by way of example laterally. For this purpose, for example, thermal radiation, which in Fig. 2 is indicated by dotted lines, are reflected on the inner walls 18 of the heating area 11.

Fig. 3 zeigt eine perspektivische Ansicht eines geschnitten dargestellten Düsenkastens 7, der in einer erfindungsgemäßen Temperierstation (hier nicht dargestellt) zum Einsatz kommen kann. Der Düsenkasten 7 bildet hier beispielhaft mehrere Düsenbereiche 8, in denen Düsen (hier nicht dargestellt) angeordnet werden können und/oder in die Düsen hineinblasen können. Zudem bildet der Düsenkasten 7 mehrere Erwärmungsbereiche 11, in denen eine oder mehrere Wärmequellen (hier nicht dargestellt) angeordnet werden können. Zudem sind die Düsenbereiche 8 von den Erwärmungsbereichen 11 mittels der Wände 18 des Düsenkastens 7 und mittels Isoliermaterial 13 getrennt. Fig. 3 shows a perspective view of a nozzle box 7 shown in section, which can be used in a temperature control station according to the invention (not shown here). The nozzle box 7 here forms, for example, a plurality of nozzle regions 8 in which nozzles (not shown here) can be arranged and / or can blow into the nozzles. In addition, the nozzle box 7 forms several heating areas 11 in which one or more heat sources (not shown here) can be arranged. In addition, the nozzle areas 8 are separated from the heating areas 11 by means of the walls 18 of the nozzle box 7 and by means of insulating material 13.

Fig. 4 zeigt eine schematische Darstellung einer erfindungsgemäßen Vorrichtung 14 zur Wärmebehandlung eines metallischen Bauteils 2. Die Vorrichtung 14 weist einen beheizbaren ersten Ofen 15, eine dem ersten Ofen 15 (direkt) nachgeordnete Temperierstation 1, einen der Temperierstation 1 (direkt) nachgeordneten, beheizbaren zweiten Ofen 16 und ein dem zweiten Ofen 16 (direkt) nachgeordnetes Presshärtewerkzeug 17 auf. Die Vorrichtung 14 stellt hier eine Warmformlinie für das (partielle) Presshärten dar. Fig. 4 shows a schematic representation of a device 14 according to the invention for heat treatment of a metallic component 2. The device 14 has a heatable first furnace 15, a temperature control station 1 (directly) downstream of the first furnace 15, and a heatable second furnace 16 (directly) downstream of the temperature control station 1 and a press hardening tool 17 arranged (directly) downstream of the second furnace 16. The device 14 here represents a hot forming line for (partial) press hardening.

Es werden hier eine Temperierstation und eine Vorrichtung zur Wärmebehandlung eines metallischen Bauteils angegeben, die die mit Bezug auf den Stand der Technik geschilderten Probleme zumindest teilweise zu lösen. Insbesondere erlauben die Temperierstation und die Vorrichtung eine ausreichend zuverlässige thermische Abgrenzung von partiell auf das Bauteil einwirkenden Wärmebehandlungsmaßnahmen und/oder eine ausreichend zuverlässige thermische Trennung von partiell auf das Bauteil einwirkenden, unterschiedlichen Wärmebehandlungsmaßnahmen.A temperature control station and a device for heat treatment of a metallic component are specified here, which at least partially solve the problems described with reference to the prior art. In particular, the temperature control station and the device allow a sufficiently reliable thermal delimitation of heat treatment measures partially acting on the component and / or a sufficiently reliable thermal separation of different heat treatment measures partially affecting the component.

BezugszeichenlisteList of reference symbols

11
TemperierstationTemperature control station
22
BauteilComponent
33
BearbeitungsebeneMachining plane
44th
Düsejet
55
FluidstromFluid flow
66th
erster Teilbereichfirst part
77th
DüsenkastenNozzle box
88th
DüsenbereichNozzle area
99
WärmequelleHeat source
1010
zweiter Teilbereichsecond part
1111
ErwärmungsbereichHeating area
1212
DüsenfeldNozzle field
1313
Isoliermaterialinsulating material
1414th
Vorrichtungcontraption
1515th
erster Ofenfirst oven
1616
zweiter Ofensecond oven
1717th
PresshärtewerkzeugPress hardening tool
1818th
Wandwall

Claims (8)

  1. Temperature-control station (1) for the partial heat treatment of a metal component (2), comprising a processing plane (3) which is arranged in the temperature-control station (1) and in which the component (2) can be arranged, at least one nozzle (4) which is oriented toward the processing plane (3) and is provided and designed to discharge a fluid flow (5) in order to cool at least one first portion (6) of the component (2), at least one heat source (9) which is provided and designed to supply heat energy to at least one second portion (10) of the component (2), and at least one nozzle box (7) which is arranged above the processing plane (3), wherein the at least one nozzle box (7) forms at least one nozzle region (8), wherein the at least one nozzle (4) protrudes into the nozzle region (8) at least in part or is even arranged entirely in the nozzle region (8), wherein the at least one nozzle box (7) forms at least one heating region (11), which is separate from the at least one nozzle region (8) and in which the heat source (9) can be arranged at least in part and/or which limits the spread of heat energy at least in part, and wherein the at least one heat source is preferably at least one radiation heat source.
  2. Temperature-control station according to claim 1, wherein the at least one nozzle box (7) is formed, at least in part, by a fiber-reinforced ceramic material.
  3. Temperature-control station according to either of the preceding claims, wherein the at least one nozzle box (7) is formed, at least in part, by an alumina ceramic.
  4. Temperature-control station according to any of the preceding claims, wherein a nozzle array (12) having a plurality of nozzles (4) is arranged, at least in part, in at least one nozzle region (8).
  5. Temperature-control station according to any of the preceding claims, wherein the at least one nozzle region (8) is shaped such that it spans a region of the processing plane (3), in which region the at least one first portion (6) of the component (2) can be arranged.
  6. Temperature-control station according to any of the preceding claims, wherein the at least one nozzle box (7) is double-walled at least in part and/or has an insulating material (13) at least in part.
  7. Device (14) for the heat treatment of a metal component (2), at least comprising:
    - a heatable first furnace (15),
    - a temperature-control station (1) downstream of the first furnace (15), which station is designed according to any of the preceding claims.
  8. Device according to claim 7, further comprising at least:
    - a heatable second furnace (16) downstream of the temperature-control station (1), and/or
    - a press-hardening tool (17) downstream of the temperature-control station (1) and/or the second furnace (16).
EP17804826.0A 2016-11-11 2017-11-08 Temperature control station for partially thermally treating a metal component Active EP3538677B1 (en)

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PCT/EP2017/078675 WO2018087191A1 (en) 2016-11-11 2017-11-08 Temperature control station for partially thermally treating a metal component

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DE102017107549A1 (en) * 2017-04-07 2018-10-11 Schwartz Gmbh Temperature control station for the partial heat treatment of a metallic component
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DE102020111615A1 (en) 2020-04-29 2021-11-04 Schwartz Gmbh Process for retrofitting a heat treatment system

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US11142807B2 (en) 2021-10-12
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CN109963951B (en) 2022-01-28
CN109963951A (en) 2019-07-02
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DE102016121699A1 (en) 2018-05-17
EP3538677A1 (en) 2019-09-18

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