EP1867738A2 - Installation de four et ligne de forme de chauffe - Google Patents

Installation de four et ligne de forme de chauffe Download PDF

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Publication number
EP1867738A2
EP1867738A2 EP07006511A EP07006511A EP1867738A2 EP 1867738 A2 EP1867738 A2 EP 1867738A2 EP 07006511 A EP07006511 A EP 07006511A EP 07006511 A EP07006511 A EP 07006511A EP 1867738 A2 EP1867738 A2 EP 1867738A2
Authority
EP
European Patent Office
Prior art keywords
furnace
module
furnace module
modules
steel sheet
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
EP07006511A
Other languages
German (de)
English (en)
Other versions
EP1867738B1 (fr
EP1867738B8 (fr
EP1867738B2 (fr
EP1867738A3 (fr
Inventor
Otto Buschsiewke
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/fr
Publication of EP1867738A3 publication Critical patent/EP1867738A3/fr
Publication of EP1867738B1 publication Critical patent/EP1867738B1/fr
Publication of EP1867738B8 publication Critical patent/EP1867738B8/fr
Application granted granted Critical
Publication of EP1867738B2 publication Critical patent/EP1867738B2/fr
Not-in-force legal-status Critical Current
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Classifications

    • 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
    • F27B9/02—Furnaces 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
    • 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
    • C21D1/62—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
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/46—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
    • C21D9/54—Furnaces for treating strips or wire
    • C21D9/56—Continuous furnaces for strip or wire
    • 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
    • F27B9/30—Details, accessories, or equipment peculiar to furnaces of these types
    • F27B9/38—Arrangements of devices for charging
    • 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
    • F27B9/30—Details, accessories, or equipment peculiar to furnaces of these types
    • F27B9/39—Arrangements of devices for discharging

Definitions

  • the invention relates to a furnace for the heat treatment of steel sheets or sheet steel components and a thermoforming 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 up to a temperature range be designed by 1,300 ° C.
  • the heat treatment under a protective gas atmosphere is possible.
  • 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 production rate in later years not reliable enough to calculate beforehand. It happens that a kiln plant or a hot forming line meets its performance limit due to changed customer requirements and increased demand. It then comes before the decision to build a second hot forming line or to increase the existing hot forming line. Both are associated with high work and investment costs.
  • the invention is therefore an object of the invention to provide a furnace and a hot forming line, which allows retrofitting to a higher throughput with reduced time, labor and investment costs.
  • the furnace part of the object is achieved by a furnace according to the features of claim 1.
  • the core of the invention is the measure that the heating zone of the furnace system is formed from at least two separately coupled oven modules and 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 installation according to the invention can be expanded in its capacity by installing further furnace modules in the manner of a modular system in order to take account of an increased power requirement.
  • 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 significantly 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 kiln plant 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.
  • Figures 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 corresponds to the hot forming line as shown in 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 installation 5 has an inlet zone E, a heating zone H and an outlet zone A.
  • 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 illustrated by the figures 1 and 2.
  • the furnace modules 16, 17, 18 are coupled to each other via end flanges 19, 20 by means of bolts 21 with inclusion of at least one heat-resistant seal 22, as shown in Figures 3 and 4.
  • 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 suitably twice as long as an initial oven module 16 or an end oven module 17.
  • a start oven module 16 and an end oven module 17 may together 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 L 18 of an extension furnace module 18 corresponds to the total length of the initial 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)
  • Crystallography & Structural Chemistry (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Materials Engineering (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 Ligne de formage à chaud Not-in-force EP1867738B2 (fr)

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

Family

ID=38282490

Family Applications (1)

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

Country Status (5)

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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016012442A1 (fr) * 2014-07-23 2016-01-28 Voestalpine Stahl Gmbh Procédé de chauffage de tôles d'acier et dispositif permettant de mettre en œuvre ledit procédé

Families Citing this family (17)

* 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
MX2018009037A (es) * 2016-01-25 2019-01-10 Schwartz Gmbh Procedimiento y dispositivo para el tratamiento termico de un componente metalico.
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
DE102021109677A1 (de) 2021-04-16 2022-10-20 Aerospace Transmission Technologies GmbH Härteofen zur Erwärmung von metallischen Werkstücken
DE102021109672A1 (de) 2021-04-16 2022-10-20 Aerospace Transmission Technologies GmbH Vorrichtung zur Wärmebehandlung von metallischen Werkstücken
DE102022118108A1 (de) 2022-07-20 2024-01-25 Onejoon Gmbh Vorrichtung zum thermischen oder thermo-chemischen Behandeln von Material

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1010547B (de) 1952-05-12 1957-06-19 Inter Continentaler Huettenbau Durchlaufofen zur Waermebehandlung von langgestrecktem Waermegut, wie Stangen oder Blechen
DE1433840A1 (de) 1963-11-16 1968-12-12 Chomat Louis Golfe Juan Tunnelofen aus einzelnen unabhaengigen Elementen
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
DE10254695B3 (de) 2002-09-13 2004-04-15 Daimlerchrysler Ag Verfahren zur Herstellung eines metallischen Formbauteils
DE10128200B4 (de) 2001-06-11 2004-07-22 Benteler Automobiltechnik Gmbh Verfahren zur Herstellung eines gehärteten Blechprofils

Family Cites Families (5)

* 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.
BE655234A (fr) † 1963-11-16 1965-03-01
US5669992A (en) † 1996-01-30 1997-09-23 Bronsema; Brand Bumper beam making process
US5944515A (en) * 1997-11-12 1999-08-31 Moco Thermal Industries, Incorporated Reversing air flow oven
EP1259772B1 (fr) † 2000-02-02 2009-11-11 BTU International, Inc. Systeme de four modulaire

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1010547B (de) 1952-05-12 1957-06-19 Inter Continentaler Huettenbau Durchlaufofen zur Waermebehandlung von langgestrecktem Waermegut, wie Stangen oder Blechen
DE1433840A1 (de) 1963-11-16 1968-12-12 Chomat Louis Golfe Juan Tunnelofen aus einzelnen unabhaengigen Elementen
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
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

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016012442A1 (fr) * 2014-07-23 2016-01-28 Voestalpine Stahl Gmbh Procédé de chauffage de tôles d'acier et dispositif permettant de mettre en œuvre ledit procédé
CN106715725A (zh) * 2014-07-23 2017-05-24 沃斯特阿尔派因钢铁有限责任公司 钢板加热方法及实施该方法的装置
US10612108B2 (en) 2014-07-23 2020-04-07 Voestalpine Stahl Gmbh Method for heating steel sheets and device for carrying out the method

Also Published As

Publication number Publication date
PL1867738T5 (pl) 2017-09-29
EP1867738B1 (fr) 2013-01-09
US20080036124A1 (en) 2008-02-14
ES2402579T5 (es) 2017-03-15
EP1867738B8 (fr) 2013-03-06
EP1867738B2 (fr) 2016-08-31
PL1867738T3 (pl) 2013-06-28
ES2402579T8 (es) 2014-11-17
EP1867738A3 (fr) 2008-06-25
DE102006027625B3 (de) 2007-08-09
ES2402579T3 (es) 2013-05-06

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