EP2767599A1 - Ligne de traitement thermique et procédé de fonctionnement de la ligne de traitement thermique - Google Patents

Ligne de traitement thermique et procédé de fonctionnement de la ligne de traitement thermique Download PDF

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Publication number
EP2767599A1
EP2767599A1 EP13186929.9A EP13186929A EP2767599A1 EP 2767599 A1 EP2767599 A1 EP 2767599A1 EP 13186929 A EP13186929 A EP 13186929A EP 2767599 A1 EP2767599 A1 EP 2767599A1
Authority
EP
European Patent Office
Prior art keywords
station
temperature
heat treatment
tempering
component
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP13186929.9A
Other languages
German (de)
English (en)
Other versions
EP2767599B1 (fr
Inventor
Georg Frost
Werner Morgenroth
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.)
Benteler Automobiltechnik GmbH
Original Assignee
Benteler Automobiltechnik GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Benteler Automobiltechnik GmbH filed Critical Benteler Automobiltechnik GmbH
Priority to DE102013022292.3A priority Critical patent/DE102013022292B4/de
Priority to DE102013113119.0A priority patent/DE102013113119B4/de
Priority to CN201310664738.3A priority patent/CN103993137A/zh
Priority to US14/180,106 priority patent/US20140224388A1/en
Publication of EP2767599A1 publication Critical patent/EP2767599A1/fr
Application granted granted Critical
Publication of EP2767599B1 publication Critical patent/EP2767599B1/fr
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    • 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
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/0056—Furnaces through which the charge is moved in a horizontal straight path
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D6/00—Heat treatment of ferrous alloys
    • 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

Definitions

  • the present invention relates to a heat treatment line for producing a heat-treated at least partially metal component according to the features in the preamble of claim 1.
  • the present invention further relates to a method for operating a heat treatment line according to the features in claim 8.
  • the hot-forming and press-hardening technology has been standardized for years, wherein a sheet-metal plate heated to austenitizing temperature is placed in a forming tool, hot-formed in this forming tool and simultaneously quenched in the forming tool and thereby hardened.
  • Object of the present invention is therefore to show a way to heat treat metal components more efficient, with a small footprint in an assembly hall is taken, production fluctuations are compensated and the energy consumption is optimized.
  • the heat treatment line for producing a heat-treated, in particular pre-coated metal component, wherein a heating station is provided, which heats the metal component at least partially to a component temperature above the austenitizing temperature, is inventively characterized in that a tempering is provided, wherein the tempering at least partially has an internal temperature, which substantially corresponds to a temperature of the metal component.
  • a heating station is thus initially provided in the heat treatment line, which may preferably be designed as a chamber furnace, alternatively as a rotary kiln or continuous furnace.
  • the component is heated to the desired component temperature.
  • This component temperature is particularly preferably set above the austenitizing temperature and therefore is thus between 800 ° C and 1000 ° C, in particular between 850 ° C and 950 ° C.
  • At least this austenitizing temperature is generated in regions in the component with the heat treatment line according to the invention.
  • the remaining areas of the component are then left at a temperature below the austenitizing temperature. Consequently, the internal temperature of the heating station above this temperature is to be set.
  • the internal temperature of the heating station should be set clearly above the component temperature.
  • the temperature within the heating station is preferably between 950 ° C to 1300 ° C, especially 1100 ° C to 1200 ° C.
  • the internal temperature of the heating station is to be selected in particular 5 to 30% above the component temperature, preferably 10 to 25% above the component temperature.
  • the heating station can be designed in particular as an oven with a burner.
  • the thus heated to the component temperature components are then removed from the heating station and transferred according to the invention in a tempering.
  • the tempering station is designed as an intermediate station in order to keep the component temperature set in the component itself at least in regions. Also in the tempering itself, the component temperature is then at least partially held, whereas the non-heated areas are correspondingly below the component temperature. In this case, it is then possible for an internal temperature, which corresponds to the component temperature itself, to prevail in the temperature control station. Alternatively, it is possible that prevails in the tempering an internal temperature which is slightly above, in particular between 0 and 10%, most preferably between 1 and 5% above the component temperature is set. Thus, it is possible to keep the component temperature for a longer period of time within the tempering station.
  • a component that is not completely austenitized in the interior of the material due to production fluctuations is still kept within the tempering station at the component temperature, so that complete austenitization takes place by heat conduction within the component itself. Because the internal temperature of the temperature control station is not higher, in particular not significantly higher than the component temperature itself, the temperature control station can be operated at lower energy costs compared to the heating station.
  • a buffer of constructed to be heated metal components wherein the buffer makes it possible that the entire production does not necessarily have to be interrupted. It can thus be carried out maintenance work, with the metal components located in the tempering the production can continue to run first. For normal production, between 40 and 60% of the possible are always found to be absorbed components within the temperature control. This ensures that in the event of a failure of the production line after the tempering initially components can be transferred from the heating station in the tempering. If the production line in front of the temperature control station fails, components for further production are still initially stored within the temperature control station.
  • the temperature control station is particularly preferably designed as a continuous furnace.
  • the advantage over the prior art, however, is that the tempering must not have a conventional continuous furnace lengths of sometimes several tens of meters, so that the component is heated by the continuous furnace over the transportable period, to a temperature, but only on the temperature is held. Consequently, it is possible to design the tempering station as a continuous furnace only a few meters long.
  • the continuous furnace for example, by sealing bulkheads or the like to hold only partially the produced component temperature in the temperature control.
  • it is also possible in the context of the invention by, for example, appropriate trailer, in particular in the form of cooling plates and / or shielding plates, areas not to bring about Austenitmaschinestemperatur.
  • both the tempering station and the heating station are therefore suitable for only partially heat-treating the metal components.
  • a metal component is to be understood in particular to mean a printed circuit board, wherein the metal component can also be treated as an already three-dimensionally shaped metal component with the heat treatment line according to the invention. Preference is also given to using precoated materials, for example a printed circuit board with a metallic coating.
  • the temperature control itself is designed as a chamber furnace, wherein a plurality of chamber furnaces are mounted one above the other and / or side by side.
  • a manipulator in particular in the form of an industrial robot to equip the several chamber furnaces in the temperature control or to remove the tempered components there.
  • the component is tempered in the tempering at least only partially to the corresponding desired component temperature.
  • the temperature control is itself designed as a rotary kiln.
  • it offers the advantage that a loading of the rotary kiln with the help of only one manipulator is possible.
  • the rotary kiln is in particular designed such that it has a plurality of receiving possibilities for metal components one above the other as well as radially circumferentially next to one another. Each empty chamber of the tempering can then be equipped by the manipulator.
  • the tempering station is followed by a cooling station.
  • the heated to over austenitizing temperature components are removed from the tempering and then quench hardened in the cooling station.
  • This can be done for example by means of a shower or shower, so that the component is guided by a sprayed on cooling medium.
  • the cooling station is formed as an immersion bath, so that the component is removed and immersed in the cooling station.
  • the material of the component undergoes such a structural transformation that the austenitic structure is converted into a substantially martensitic structure.
  • the cooling station may also be a hot forming and press hardening tool within the scope of the invention.
  • the corresponding heat-treated component is then transferred from the tempering in the hot forming tool and hot-formed here and then press-hardened.
  • austenitizing the component is then only a partially press hardening, in contrast, the areas were not tempered, are not completely austenitized and thus are not fully cured. These have a rather ductile component property.
  • Another part of the invention is a method for operating the heat treatment line according to the aforementioned features, wherein the heat treatment line is operated such that prevails in the heating station an internal temperature, which is formed above the component temperature and prevails in the tempering an internal temperature corresponding to the component temperature ,
  • an internal temperature is set within the heating station, which is between 1000 ° C and 1300 ° C, in particular between 1100 ° C and 1200 ° C and the internal temperature of the tempering between 800 ° C and 1000 ° C, preferably between 850 and 950 ° C. is.
  • the temperature control is used as a buffer to compensate for downtime and / or production interruptions at the heating station and / or at the cooling station.
  • inventively particularly advantageous embodiment variant of the method has been found, when the metal component at an actual component temperature of 700 ° C to 1100 ° C, preferably 800 ° C to 1000 ° C, in particular 850 ° C to 950 ° C removed from the heating station is and then at least partially reheated in the tempering at above Austenitmaschinestemperatur, in particular to the component temperature particularly preferably at least 900 ° C. It is also possible to subsequently reheat the entire component to over 900 ° C. in the subsequent tempering station. This results in a total shortened running time, which requires the pre-coated metal component on the corresponding heat treatment line to produce an at least partially homogeneous intermetallic alloy coating needed.
  • an aluminum-silicon coating is used as a metallic precoating on the heat-treatable, in particular hot-forming and press-hardening metal component.
  • the heating phase can be further shortened in time, if a Metal component is produced with a pre-alloyed metallic precoating.
  • Pre-alloyed is understood to mean that heat treatment with diffusion processes between the steel substrate and the elements of the metallic coating is carried out before the heating station, in particular at the steel producer.
  • FIG. 1 shows a heat treatment line 1 according to the invention for the production of heat-treated metal components.
  • the heat treatment line 1 has a heating station 2 in the form of three adjacent chamber furnaces 3 and a heating station 2 downstream tempering 4.
  • the tempering 4 itself is designed as a roller hearth furnace 5, so that the roller hearth 5 a receiving side 6 with a receiving opening not shown and a Removing side 7 has a discharge opening, not shown.
  • the tempering station 4 is followed by a cooling station 8, for example in the form of a dip bath. Between the individual stations is used in each case in industrial robot 9, which transfers the non-illustrated metal components between the individual stations.
  • FIG. 2 shows an alternative embodiment, wherein the heat treatment line 1 in turn has a heating station 2, in the Chamber furnaces 3 are arranged side by side.
  • the tempering 4 itself is in the form of a rotary kiln 10, which is freely rotatable in the direction of rotation D to transfer individual components via an industrial robot 9 of the heating station 2 in the rotary kiln 10 and remove it after a certain storage time within the rotary kiln 10 from this and the cooling station 8 supply.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Heat Treatment Of Articles (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)
EP13186929.9A 2013-02-14 2013-10-01 Procédé de fonctionnement d'une ligne de traitement thermique Active EP2767599B1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE102013022292.3A DE102013022292B4 (de) 2013-10-01 2013-11-27 Verfahren zur Herstellung eines Stahlbauteils mit partiell unterschiedlichen Eigenschaften
DE102013113119.0A DE102013113119B4 (de) 2013-10-01 2013-11-27 Verfahren zur Herstellung eines Stahlbauteils mit partiell unterschiedlichen Eigenschaften und Kammerofen
CN201310664738.3A CN103993137A (zh) 2013-02-14 2013-12-10 热处理作业线和操作热处理作业线的方法
US14/180,106 US20140224388A1 (en) 2013-02-14 2014-02-13 Heat treatment line and method for operating the heat treatment line

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102013101489.5A DE102013101489B3 (de) 2013-02-14 2013-02-14 Wärmebehandlungslinie und Verfahren zum Betreiben der Wärmebehandlungslinie

Publications (2)

Publication Number Publication Date
EP2767599A1 true EP2767599A1 (fr) 2014-08-20
EP2767599B1 EP2767599B1 (fr) 2020-12-09

Family

ID=49274506

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13186929.9A Active EP2767599B1 (fr) 2013-02-14 2013-10-01 Procédé de fonctionnement d'une ligne de traitement thermique

Country Status (5)

Country Link
US (1) US20140224388A1 (fr)
EP (1) EP2767599B1 (fr)
CN (1) CN103993137A (fr)
DE (1) DE102013101489B3 (fr)
ES (1) ES2845558T3 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015110456A1 (fr) * 2014-01-23 2015-07-30 Schwartz Gmbh Dispositif de traitement thermique
EP2944393A4 (fr) * 2013-01-11 2016-10-26 Futaba Ind Co Ltd Dispositif de chauffage pour estampage à chaud

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016100648B4 (de) * 2015-12-23 2018-04-12 Benteler Automobiltechnik Gmbh Wärmebehandlungsofen sowie Verfahren zur Wärmebehandlung einer vorbeschichteten Stahlblechplatine und Verfahren zur Herstellung eines Kraftfahrzeugbauteils
DE102016125510B3 (de) 2016-12-22 2018-04-12 Benteler Automobiltechnik Gmbh Warmgeformtes metallisches Blechbauteil sowie Verfahren zur Herstellung einer Öffnung in einem solchen Blechbauteil
DE102017107549A1 (de) * 2017-04-07 2018-10-11 Schwartz Gmbh Temperierstation zur partiellen Wärmebehandlung eines metallischen Bauteils
DE102018103145A1 (de) * 2018-02-13 2019-08-14 Ebner Industrieofenbau Gmbh Anordnung mit mehreren Temperierstationen zur Wärmebehandlung von Bauteilen und deren Handhabung
CN108588612B (zh) 2018-04-28 2019-09-20 育材堂（苏州）材料科技有限公司 热冲压成形构件、热冲压成形用预涂镀钢板及热冲压成形工艺

Citations (9)

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Publication number Priority date Publication date Assignee Title
WO2005078144A1 (fr) * 2004-02-13 2005-08-25 Audi Ag Procede de production d'un element constitutif par deformation d'une platine et dispositif approprie pour mettre ledit procede en oeuvre
EP2182082A1 (fr) * 2008-10-29 2010-05-05 Neue Materialien Bayreuth GmbH Procédé et dispositif destinés à l'équilibrage de la température d'un corps en tôle d'acier
WO2010127837A2 (fr) * 2009-05-04 2010-11-11 Braun, Elisabeth Dispositif et procédé pour chauffer des pièces à usiner façonnables à chaud
EP2365100A2 (fr) * 2010-03-04 2011-09-14 Kirchhoff Automotive Deutschland GmbH Procédé pour produine une piece moulee ayant au moins deux domaines de structure avec des ductilites differentes
DE102009051157B4 (de) 2009-10-29 2011-09-22 Benteler Automobiltechnik Gmbh Kammerofen mit Übertemperatur
EP2497840A1 (fr) * 2011-03-10 2012-09-12 Schwartz, Eva Système de four pour le réchauffage partiel d'ébauches métalliques
EP2548975A1 (fr) * 2011-07-20 2013-01-23 LOI Thermprocess GmbH Procédé et dispositif de fabrication d'un composant métallique durci doté d'au moins deux zones ayant une ductilité différente
WO2014053550A1 (fr) * 2012-10-04 2014-04-10 Ebner Industrieofenbau Gmbh Dispositif de maniement
EP2730665A1 (fr) * 2012-11-07 2014-05-14 Benteler Automobiltechnik GmbH Ligne moulée à chaud et procédé de fabrication d'un composant de véhicule automobile déformé à chaud et durci à la presse

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NL1003293C2 (nl) * 1996-06-07 1997-12-10 Hoogovens Staal Bv Werkwijze en inrichting voor het vervaardigen van een stalen band.

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005078144A1 (fr) * 2004-02-13 2005-08-25 Audi Ag Procede de production d'un element constitutif par deformation d'une platine et dispositif approprie pour mettre ledit procede en oeuvre
EP2182082A1 (fr) * 2008-10-29 2010-05-05 Neue Materialien Bayreuth GmbH Procédé et dispositif destinés à l'équilibrage de la température d'un corps en tôle d'acier
WO2010127837A2 (fr) * 2009-05-04 2010-11-11 Braun, Elisabeth Dispositif et procédé pour chauffer des pièces à usiner façonnables à chaud
DE102009051157B4 (de) 2009-10-29 2011-09-22 Benteler Automobiltechnik Gmbh Kammerofen mit Übertemperatur
EP2365100A2 (fr) * 2010-03-04 2011-09-14 Kirchhoff Automotive Deutschland GmbH Procédé pour produine une piece moulee ayant au moins deux domaines de structure avec des ductilites differentes
EP2497840A1 (fr) * 2011-03-10 2012-09-12 Schwartz, Eva Système de four pour le réchauffage partiel d'ébauches métalliques
EP2548975A1 (fr) * 2011-07-20 2013-01-23 LOI Thermprocess GmbH Procédé et dispositif de fabrication d'un composant métallique durci doté d'au moins deux zones ayant une ductilité différente
WO2014053550A1 (fr) * 2012-10-04 2014-04-10 Ebner Industrieofenbau Gmbh Dispositif de maniement
EP2730665A1 (fr) * 2012-11-07 2014-05-14 Benteler Automobiltechnik GmbH Ligne moulée à chaud et procédé de fabrication d'un composant de véhicule automobile déformé à chaud et durci à la presse

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2944393A4 (fr) * 2013-01-11 2016-10-26 Futaba Ind Co Ltd Dispositif de chauffage pour estampage à chaud
US10619925B2 (en) 2013-01-11 2020-04-14 Futaba Industrial Co., Ltd. Heating device for hot stamping
WO2015110456A1 (fr) * 2014-01-23 2015-07-30 Schwartz Gmbh Dispositif de traitement thermique
EP2905346A1 (fr) * 2014-01-23 2015-08-12 Schwartz GmbH Dispositif de traitement de la chaleur

Also Published As

Publication number Publication date
ES2845558T3 (es) 2021-07-27
CN103993137A (zh) 2014-08-20
DE102013101489B3 (de) 2014-06-05
US20140224388A1 (en) 2014-08-14
EP2767599B1 (fr) 2020-12-09

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