EP1867738B2 - Warmformlinie - Google Patents

Warmformlinie Download PDF

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Publication number
EP1867738B2
EP1867738B2 EP07006511.5A EP07006511A EP1867738B2 EP 1867738 B2 EP1867738 B2 EP 1867738B2 EP 07006511 A EP07006511 A EP 07006511A EP 1867738 B2 EP1867738 B2 EP 1867738B2
Authority
EP
European Patent Office
Prior art keywords
oven
module
steel sheet
hot forming
furnace
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.)
Not-in-force
Application number
EP07006511.5A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1867738A3 (de
EP1867738A2 (de
EP1867738B8 (de
EP1867738B1 (de
Inventor
Otto Buschsieweke
Christoph Mainka
Stefan Adelbert
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
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Application filed by Benteler Automobiltechnik GmbH filed Critical Benteler Automobiltechnik GmbH
Priority to PL07006511T priority Critical patent/PL1867738T5/pl
Publication of EP1867738A2 publication Critical patent/EP1867738A2/de
Publication of EP1867738A3 publication Critical patent/EP1867738A3/de
Publication of EP1867738B1 publication Critical patent/EP1867738B1/de
Publication of EP1867738B8 publication Critical patent/EP1867738B8/de
Application granted granted Critical
Publication of EP1867738B2 publication Critical patent/EP1867738B2/de
Not-in-force legal-status Critical Current
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27FURNACES; KILNS; OVENS; RETORTS
    • F27BFURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/02Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity of multiple-track type; of multiple-chamber type; Combinations of furnaces
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D1/00General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/18Hardening; Quenching with or without subsequent tempering
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D1/00General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/62Quenching devices
    • C21D1/673Quenching devices for die quenching
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D9/00Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/0056Furnaces through which the charge is moved in a horizontal straight path
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D9/00Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/46Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D9/00Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/52Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
    • C21D9/54Furnaces for treating strips or wire
    • C21D9/56Continuous furnaces for strip or wire
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27FURNACES; KILNS; OVENS; RETORTS
    • F27BFURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/30Details, accessories, or equipment peculiar to furnaces of these types
    • F27B9/38Arrangements of devices for charging
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27FURNACES; KILNS; OVENS; RETORTS
    • F27BFURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/30Details, accessories, or equipment peculiar to furnaces of these types
    • F27B9/39Arrangements of devices for discharging

Definitions

  • the invention relates to a hot forming line for producing a hardened sheet steel profile component.
  • Furnace systems for heating steel sheets or sheet steel components are known in a variety of designs. So-called continuous furnaces - electrically or gas-heated - are used for the continuous heat treatment of steel sheets or steel sheet components in large quantities. From the DE 1 010 547 B goes a continuous furnace for the heat treatment of elongated réellegut as rods or sheets with a heating channel, which is formed of two successively arranged, interchangeable construction sections.
  • the use of a continuous furnace within a hot forming line for the production of hardened sheet steel profile components is for example in the DE 101 28 200 B4 or the DE 102 54 695 B3 described. Such furnaces can be designed up to a temperature range of 1,300 ° C.
  • the heat treatment under a protective gas atmosphere is possible.
  • the US-A-5,923,699 discloses a furnace plant to bring steel to a stable temperature, particularly for use in conjunction with steel rolling processes.
  • the furnace system has a modular structure consisting of oven modules which can be coupled together, with an initial module and an end module between which extension modules can be inserted.
  • a method for producing a metallic mold component is known.
  • a component blank is first formed from a semi-finished by a cold forming process.
  • the component blank is then trimmed on the edge side to an edge contour that corresponds approximately to the shaped component to be produced, and then the trimmed component blank is heated and finished in a hot-forming tool and at the same time press-hardened.
  • the FR-A-2 369 228 describes a tunnel kiln for ceramic goods, where the tunnel kiln are assembled in box construction with different modules can to achieve a higher throughput with reduced time and effort.
  • a tunnel kiln belongs to the state of the art, which is made up of individual furnace elements or tunnel sections. These are mounted on rails and connected by means of bolts yielding elastic.
  • roller hearth furnace for mass parts with integrated quench system, wherein the roller hearth furnace is modular.
  • a hot forming line is designed for a specific power or production rate. This is also the basis of the capacity of the furnace within the hot forming line. Because of the large investment effort, it is understandable to try to avoid over-dimensioning the kiln plant. Also, one can sometimes at the beginning before commissioning a hot forming line the required
  • the invention is therefore an object of the invention to provide a thermoforming line for producing a hardened sheet steel profile component, which allows retrofitting to a higher throughput with reduced time, labor and investment costs.
  • the core of the invention is the measure that the heating zone of the furnace plant from at least two separable coupled furnace modules is formed as well as the use of such a furnace in the form of a continuous furnace in a hot forming line for producing a hardened sheet steel profile component.
  • the furnace system can be extended by installing further furnace modules in the manner of a modular system in their capacity, so as to take account of increased power requirements.
  • the existing furnace modules are separated and installed corresponding expansion furnace modules.
  • thermoforming line for the production of hardened steel sheet profiles
  • the necessary downtime and conversion times are clearly Lich lower than in the construction of a second production line or the conventional conversion of the existing kiln plant, because according to the invention, the replenishment of the furnace system with standardized furnace modules. These are equipped with all necessary heating devices, conveyors, insulation, air supply and / or air discharge as well as the necessary separation and coupling points.
  • Hardened sheet steel profile components are used in the automotive industry, for example, as A, B or C pillars, as door impact beams or bumpers. Side wall structures of a motor vehicle body are also produced by hot forming today and hardened in the press tool.
  • FIGS. 5 and 6 show a schematic representation of a hot forming line.
  • a steel sheet 1 is separated from a unwound and straightened portion of a coil 2 made of a thermoformable sheet in a punching or cutting device 3.
  • the optionally preformed steel sheet 1 is supplied with a first manipulator 4 of a furnace system 5 in the form of a continuous furnace.
  • the continuous furnace 5 is preceded by a press 6, in which the steel sheet 1 is preformed and optionally trimmed. Otherwise, the representation of FIG. 6 the hot forming line as shown in FIG FIG. 5 ,
  • the steel sheet 1 is heated to a temperature which is above the structural transformation temperature in the austenitic state. Depending on the grade of steel, this temperature is in a range between 700 ° C. and 1100 ° C.
  • the atmosphere of the continuous furnace 5 is rendered inert by a targeted and sufficient addition of a protective gas to prevent scaling of the sheet steel surface.
  • a second manipulator 7 picks up the heated steel sheet 1 and places it in a press tool 8.
  • the steel sheet 1 is finally formed into the steel sheet profile component 9 and rapidly cooled by means of a cooling device 10, whereby a fine-grained martensitic or bainitic material structure is set. In this case, hardening of the sheet steel profile component 9 takes place with a targeted adjustment of the material strength.
  • Downstream of the press tool 8 is a third manipulator 11, which the finished molded and hardened sheet steel profile component 9 from the press tool 8 removes and transferred to a container.
  • the furnace 5 has in the basic design, as in FIG. 1 represented, an inlet zone E, a heating zone H and an outlet zone A on.
  • the inlet zone E essentially comprises a feed table 12 with integrated transport rollers 13.
  • the outlet zone A has a take-off table 14 with transport rollers 15 arranged therein.
  • the heating zone H consists here of two furnace modules 16, 17, namely an initial furnace module 16 and an end furnace module 17. These are coupled to each other separable.
  • extension furnace modules 18 can be incorporated into the heating zone H.
  • the start oven module 16 and the end oven module 17 are separated and installed between them one or more extension oven modules 18. This is based on the Figures 1 and 2 clarified.
  • the furnace modules 16, 17, 18 are connected via end flanges 19, 20 by means of bolts 21 with inclusion of at least one heat-resistant seal 22 coupled together, as in the FIGS. 3 and 4 seen.
  • the flanges 19, 20 may additionally be tightly welded.
  • the oven modules 16-18 are provided with an insulating lining 27.
  • Each oven module 16, 17, 18 is equipped with a heater 23.
  • the heater 23 may be electrically or gas heated.
  • a conveyor 24 is integrated for transporting the steel sheets 1 through the furnace module 16-18.
  • the conveyor means 24 each comprise a chain of oven rollers 25.
  • the conveyor means 24 of adjacent oven modules 16-18 are closed together to provide a continuous transport path.
  • At least one furnace module 16-18 is equipped with an inert gas supply 26.
  • the individual oven modules 16-18 have standardized dimensions, with the extension oven modules 18 being twice as long as a start oven module 16 or an end oven module 17.
  • a start oven module 16 and an end oven module 17 may together make up a 6m Unit result.
  • the extension furnace modules 18 then have a total length of 6 m, so that a furnace installation 5 can be constructed modularly in each case from 6m units. Accordingly, the length L18 of an extension furnace module 18 corresponds to the total length of the start furnace module 16 and the end furnace module 17.
  • the construction of the furnace installation 5 of separable, standardized furnace modules 16-18 enables a capacity adaptation or conversion to a higher throughput with standardized building blocks. This has logistical and mounting advantages. In this way, the furnace 5 can be upgraded with relatively little time, labor and investment costs to increase throughput.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • General Engineering & Computer Science (AREA)
  • Tunnel Furnaces (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)
  • Heat Treatment Of Articles (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)
EP07006511.5A 2006-06-13 2007-03-29 Warmformlinie Not-in-force EP1867738B2 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL07006511T PL1867738T5 (pl) 2006-06-13 2007-03-29 Linia do obróbki plastycznej na gorąco

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102006027625A DE102006027625B3 (de) 2006-06-13 2006-06-13 Ofenanlage und Warmformlinie

Publications (5)

Publication Number Publication Date
EP1867738A2 EP1867738A2 (de) 2007-12-19
EP1867738A3 EP1867738A3 (de) 2008-06-25
EP1867738B1 EP1867738B1 (de) 2013-01-09
EP1867738B8 EP1867738B8 (de) 2013-03-06
EP1867738B2 true EP1867738B2 (de) 2016-08-31

Family

ID=38282490

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07006511.5A Not-in-force EP1867738B2 (de) 2006-06-13 2007-03-29 Warmformlinie

Country Status (5)

Country Link
US (1) US20080036124A1 (es)
EP (1) EP1867738B2 (es)
DE (1) DE102006027625B3 (es)
ES (1) ES2402579T5 (es)
PL (1) PL1867738T5 (es)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009014670B4 (de) * 2009-03-27 2011-01-13 Thyssenkrupp Sofedit S.A.S Verfahren und Warmumformanlage zur Herstellung von pressgehärteten Formbauteilen aus Stahlblech
US20100276939A1 (en) * 2009-04-30 2010-11-04 Manfred Clynes Generating electricity using wind
DE102009019496A1 (de) * 2009-05-04 2010-11-18 Braun, Elisabeth Vorrichtung und Verfahren zur Erwärmung warm umzuformender Werkstücke
DE102010004081C5 (de) 2010-01-06 2016-11-03 Benteler Automobiltechnik Gmbh Verfahren zum Warmformen und Härten einer Platine
CN102266900B (zh) * 2010-06-07 2015-11-25 蒂森克虏伯金属成型技术有限公司 用于制造锻压的钢板成型构件的方法和热成型装置
CN102002566B (zh) * 2010-10-18 2012-03-21 王刚 无缝钢管校直淬火装置
DE102012001335B4 (de) * 2012-01-25 2017-07-27 Elisabeth Braun Warmumformeinrichtung
DE102012110649C5 (de) 2012-11-07 2018-03-01 Benteler Automobiltechnik Gmbh Warmformlinie sowie Verfahren zur Herstellung eines warmumgeformten und pressgehärteten Kraftfahrzeugbauteils
DE102013107870A1 (de) * 2013-07-23 2015-01-29 Benteler Automobiltechnik Gmbh Verfahren zur Herstellung von Formbauteilen sowie Formbauteil und Durchlaufofen
DE102013018109B4 (de) * 2013-12-03 2018-08-02 Eisenmann Se Verfahren, Ofeneinrichtung und Anlage zum Formhärten von Werkstücken
DE102013021584B4 (de) * 2013-12-19 2022-02-17 Onejoon Gmbh Verfahren, Ofeneinrichtung und Anlage zum Formhärten von Werkstücken
DE102014110415B4 (de) * 2014-07-23 2016-10-20 Voestalpine Stahl Gmbh Verfahren zum Aufheizen von Stahlblechen und Vorrichtung zur Durchführung des Verfahrens
EP3408421A1 (de) * 2016-01-25 2018-12-05 Schwartz GmbH Verfahren und vorrichtung zur wärmebehandlung eines metallischen bauteils
DE102016121354B3 (de) * 2016-11-08 2018-05-09 Tower Automotive Holding Gmbh Anlage zum Herstellen eines warmgehärteten blechförmigen Werkstücks
DE102019201924A1 (de) * 2019-02-14 2020-08-20 Audi Ag Modulare Wärmebehandlungsanlage für die chargenweise Wärmebehandlung von metallischen Werkstücken
DE102021109672A1 (de) 2021-04-16 2022-10-20 Aerospace Transmission Technologies GmbH Vorrichtung zur Wärmebehandlung von metallischen Werkstücken
DE102021109677A1 (de) 2021-04-16 2022-10-20 Aerospace Transmission Technologies GmbH Härteofen zur Erwärmung von metallischen Werkstücken
DE102022118108A1 (de) 2022-07-20 2024-01-25 Onejoon Gmbh Vorrichtung zum thermischen oder thermo-chemischen Behandeln von Material

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE716709C (de) 1939-12-15 1942-01-27 Indugas Ind & Gasofen Baugesel Durchlaufofen zur Waermebehandlung von Sturzen, Blechen, Rohren o. dgl.
DE1433841A1 (de) 1963-11-16 1968-10-10 Chomat Louis Golfe Juan Aus einzelnen Elementen zusammensetzbarer Tunnelofen
US5669992A (en) 1996-01-30 1997-09-23 Bronsema; Brand Bumper beam making process
US20010055740A1 (en) 2000-02-02 2001-12-27 Btu International, Inc. Modular furnace system

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CH416431A (fr) 1963-11-16 1966-06-30 Chomat Louis Four-tunnel
FR2369228A1 (fr) 1976-10-28 1978-05-26 Secail Jean Four a longueur variable pour la cuisson en monocouche de produits ceramiques
US5923699A (en) 1996-10-15 1999-07-13 Geneva Steel Induction furnance heating module and gas zone
US5944515A (en) * 1997-11-12 1999-08-31 Moco Thermal Industries, Incorporated Reversing air flow oven
DE10128200B4 (de) * 2001-06-11 2004-07-22 Benteler Automobiltechnik Gmbh Verfahren zur Herstellung eines gehärteten Blechprofils
DE10254695B3 (de) * 2002-09-13 2004-04-15 Daimlerchrysler Ag Verfahren zur Herstellung eines metallischen Formbauteils

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE716709C (de) 1939-12-15 1942-01-27 Indugas Ind & Gasofen Baugesel Durchlaufofen zur Waermebehandlung von Sturzen, Blechen, Rohren o. dgl.
DE1433841A1 (de) 1963-11-16 1968-10-10 Chomat Louis Golfe Juan Aus einzelnen Elementen zusammensetzbarer Tunnelofen
US5669992A (en) 1996-01-30 1997-09-23 Bronsema; Brand Bumper beam making process
US20010055740A1 (en) 2000-02-02 2001-12-27 Btu International, Inc. Modular furnace system

Non-Patent Citations (1)

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Title
"HICON roller hearth furnaces for solution heat treating plate and sheet - operating results and experience gained on existing facilities", HICON ALUMINUM 2002 - PAPER 10, Seiten 1-18

Also Published As

Publication number Publication date
EP1867738A3 (de) 2008-06-25
EP1867738A2 (de) 2007-12-19
EP1867738B8 (de) 2013-03-06
ES2402579T3 (es) 2013-05-06
EP1867738B1 (de) 2013-01-09
PL1867738T5 (pl) 2017-09-29
DE102006027625B3 (de) 2007-08-09
ES2402579T8 (es) 2014-11-17
ES2402579T5 (es) 2017-03-15
US20080036124A1 (en) 2008-02-14
PL1867738T3 (pl) 2013-06-28

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